Merge branch 'master' of https://github.com/MoonchildProductions/UXP into js_dom_performance-resource-timing_1

3 files changed, 0 insertions, 5699 deletions

diff --git a/memory/jemalloc/src/bin/jemalloc-config.in b/memory/jemalloc/src/bin/jemalloc-config.in
deleted file mode 100644
index b016c8d33..000000000
--- a/memory/jemalloc/src/bin/jemalloc-config.in
+++ /dev/null
@@ -1,79 +0,0 @@
-#!/bin/sh
-
-usage() {
-	cat <<EOF
-Usage:
-  @BINDIR@/jemalloc-config <option>
-Options:
-  --help | -h  : Print usage.
-  --version    : Print jemalloc version.
-  --revision   : Print shared library revision number.
-  --config     : Print configure options used to build jemalloc.
-  --prefix     : Print installation directory prefix.
-  --bindir     : Print binary installation directory.
-  --datadir    : Print data installation directory.
-  --includedir : Print include installation directory.
-  --libdir     : Print library installation directory.
-  --mandir     : Print manual page installation directory.
-  --cc         : Print compiler used to build jemalloc.
-  --cflags     : Print compiler flags used to build jemalloc.
-  --cppflags   : Print preprocessor flags used to build jemalloc.
-  --ldflags    : Print library flags used to build jemalloc.
-  --libs       : Print libraries jemalloc was linked against.
-EOF
-}
-
-prefix="@prefix@"
-exec_prefix="@exec_prefix@"
-
-case "$1" in
---help | -h)
-	usage
-	exit 0
-	;;
---version)
-	echo "@jemalloc_version@"
-	;;
---revision)
-	echo "@rev@"
-	;;
---config)
-	echo "@CONFIG@"
-	;;
---prefix)
-	echo "@PREFIX@"
-	;;
---bindir)
-	echo "@BINDIR@"
-	;;
---datadir)
-	echo "@DATADIR@"
-	;;
---includedir)
-	echo "@INCLUDEDIR@"
-	;;
---libdir)
-	echo "@LIBDIR@"
-	;;
---mandir)
-	echo "@MANDIR@"
-	;;
---cc)
-	echo "@CC@"
-	;;
---cflags)
-	echo "@CFLAGS@"
-	;;
---cppflags)
-	echo "@CPPFLAGS@"
-	;;
---ldflags)
-	echo "@LDFLAGS@ @EXTRA_LDFLAGS@"
-	;;
---libs)
-	echo "@LIBS@"
-	;;
-*)
-	usage
-	exit 1
-esac
diff --git a/memory/jemalloc/src/bin/jemalloc.sh.in b/memory/jemalloc/src/bin/jemalloc.sh.in
deleted file mode 100644
index cdf367375..000000000
--- a/memory/jemalloc/src/bin/jemalloc.sh.in
+++ /dev/null
@@ -1,9 +0,0 @@
-#!/bin/sh
-
-prefix=@prefix@
-exec_prefix=@exec_prefix@
-libdir=@libdir@
-
-@LD_PRELOAD_VAR@=${libdir}/libjemalloc.@SOREV@
-export @LD_PRELOAD_VAR@
-exec "$@"
diff --git a/memory/jemalloc/src/bin/jeprof.in b/memory/jemalloc/src/bin/jeprof.in
deleted file mode 100644
index 42087fcec..000000000
--- a/memory/jemalloc/src/bin/jeprof.in
+++ /dev/null
@@ -1,5611 +0,0 @@
-#! /usr/bin/env perl
-
-# Copyright (c) 1998-2007, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-# ---
-# Program for printing the profile generated by common/profiler.cc,
-# or by the heap profiler (common/debugallocation.cc)
-#
-# The profile contains a sequence of entries of the form:
-#       <count> <stack trace>
-# This program parses the profile, and generates user-readable
-# output.
-#
-# Examples:
-#
-# % tools/jeprof "program" "profile"
-#   Enters "interactive" mode
-#
-# % tools/jeprof --text "program" "profile"
-#   Generates one line per procedure
-#
-# % tools/jeprof --gv "program" "profile"
-#   Generates annotated call-graph and displays via "gv"
-#
-# % tools/jeprof --gv --focus=Mutex "program" "profile"
-#   Restrict to code paths that involve an entry that matches "Mutex"
-#
-# % tools/jeprof --gv --focus=Mutex --ignore=string "program" "profile"
-#   Restrict to code paths that involve an entry that matches "Mutex"
-#   and does not match "string"
-#
-# % tools/jeprof --list=IBF_CheckDocid "program" "profile"
-#   Generates disassembly listing of all routines with at least one
-#   sample that match the --list=<regexp> pattern.  The listing is
-#   annotated with the flat and cumulative sample counts at each line.
-#
-# % tools/jeprof --disasm=IBF_CheckDocid "program" "profile"
-#   Generates disassembly listing of all routines with at least one
-#   sample that match the --disasm=<regexp> pattern.  The listing is
-#   annotated with the flat and cumulative sample counts at each PC value.
-#
-# TODO: Use color to indicate files?
-
-use strict;
-use warnings;
-use Getopt::Long;
-
-my $JEPROF_VERSION = "@jemalloc_version@";
-my $PPROF_VERSION = "2.0";
-
-# These are the object tools we use which can come from a
-# user-specified location using --tools, from the JEPROF_TOOLS
-# environment variable, or from the environment.
-my %obj_tool_map = (
-  "objdump" => "objdump",
-  "nm" => "nm",
-  "addr2line" => "addr2line",
-  "c++filt" => "c++filt",
-  ## ConfigureObjTools may add architecture-specific entries:
-  #"nm_pdb" => "nm-pdb",       # for reading windows (PDB-format) executables
-  #"addr2line_pdb" => "addr2line-pdb",                                # ditto
-  #"otool" => "otool",         # equivalent of objdump on OS X
-);
-# NOTE: these are lists, so you can put in commandline flags if you want.
-my @DOT = ("dot");          # leave non-absolute, since it may be in /usr/local
-my @GV = ("gv");
-my @EVINCE = ("evince");    # could also be xpdf or perhaps acroread
-my @KCACHEGRIND = ("kcachegrind");
-my @PS2PDF = ("ps2pdf");
-# These are used for dynamic profiles
-my @URL_FETCHER = ("curl", "-s", "--fail");
-
-# These are the web pages that servers need to support for dynamic profiles
-my $HEAP_PAGE = "/pprof/heap";
-my $PROFILE_PAGE = "/pprof/profile";   # must support cgi-param "?seconds=#"
-my $PMUPROFILE_PAGE = "/pprof/pmuprofile(?:\\?.*)?"; # must support cgi-param
-                                                # ?seconds=#&event=x&period=n
-my $GROWTH_PAGE = "/pprof/growth";
-my $CONTENTION_PAGE = "/pprof/contention";
-my $WALL_PAGE = "/pprof/wall(?:\\?.*)?";  # accepts options like namefilter
-my $FILTEREDPROFILE_PAGE = "/pprof/filteredprofile(?:\\?.*)?";
-my $CENSUSPROFILE_PAGE = "/pprof/censusprofile(?:\\?.*)?"; # must support cgi-param
-                                                       # "?seconds=#",
-                                                       # "?tags_regexp=#" and
-                                                       # "?type=#".
-my $SYMBOL_PAGE = "/pprof/symbol";     # must support symbol lookup via POST
-my $PROGRAM_NAME_PAGE = "/pprof/cmdline";
-
-# These are the web pages that can be named on the command line.
-# All the alternatives must begin with /.
-my $PROFILES = "($HEAP_PAGE|$PROFILE_PAGE|$PMUPROFILE_PAGE|" .
-               "$GROWTH_PAGE|$CONTENTION_PAGE|$WALL_PAGE|" .
-               "$FILTEREDPROFILE_PAGE|$CENSUSPROFILE_PAGE)";
-
-# default binary name
-my $UNKNOWN_BINARY = "(unknown)";
-
-# There is a pervasive dependency on the length (in hex characters,
-# i.e., nibbles) of an address, distinguishing between 32-bit and
-# 64-bit profiles.  To err on the safe size, default to 64-bit here:
-my $address_length = 16;
-
-my $dev_null = "/dev/null";
-if (! -e $dev_null && $^O =~ /MSWin/) {    # $^O is the OS perl was built for
-  $dev_null = "nul";
-}
-
-# A list of paths to search for shared object files
-my @prefix_list = ();
-
-# Special routine name that should not have any symbols.
-# Used as separator to parse "addr2line -i" output.
-my $sep_symbol = '_fini';
-my $sep_address = undef;
-
-##### Argument parsing #####
-
-sub usage_string {
-  return <<EOF;
-Usage:
-jeprof [options] <program> <profiles>
-   <profiles> is a space separated list of profile names.
-jeprof [options] <symbolized-profiles>
-   <symbolized-profiles> is a list of profile files where each file contains
-   the necessary symbol mappings  as well as profile data (likely generated
-   with --raw).
-jeprof [options] <profile>
-   <profile> is a remote form.  Symbols are obtained from host:port$SYMBOL_PAGE
-
-   Each name can be:
-   /path/to/profile        - a path to a profile file
-   host:port[/<service>]   - a location of a service to get profile from
-
-   The /<service> can be $HEAP_PAGE, $PROFILE_PAGE, /pprof/pmuprofile,
-                         $GROWTH_PAGE, $CONTENTION_PAGE, /pprof/wall,
-                         $CENSUSPROFILE_PAGE, or /pprof/filteredprofile.
-   For instance:
-     jeprof http://myserver.com:80$HEAP_PAGE
-   If /<service> is omitted, the service defaults to $PROFILE_PAGE (cpu profiling).
-jeprof --symbols <program>
-   Maps addresses to symbol names.  In this mode, stdin should be a
-   list of library mappings, in the same format as is found in the heap-
-   and cpu-profile files (this loosely matches that of /proc/self/maps
-   on linux), followed by a list of hex addresses to map, one per line.
-
-   For more help with querying remote servers, including how to add the
-   necessary server-side support code, see this filename (or one like it):
-
-   /usr/doc/gperftools-$PPROF_VERSION/pprof_remote_servers.html
-
-Options:
-   --cum               Sort by cumulative data
-   --base=<base>       Subtract <base> from <profile> before display
-   --interactive       Run in interactive mode (interactive "help" gives help) [default]
-   --seconds=<n>       Length of time for dynamic profiles [default=30 secs]
-   --add_lib=<file>    Read additional symbols and line info from the given library
-   --lib_prefix=<dir>  Comma separated list of library path prefixes
-
-Reporting Granularity:
-   --addresses         Report at address level
-   --lines             Report at source line level
-   --functions         Report at function level [default]
-   --files             Report at source file level
-
-Output type:
-   --text              Generate text report
-   --callgrind         Generate callgrind format to stdout
-   --gv                Generate Postscript and display
-   --evince            Generate PDF and display
-   --web               Generate SVG and display
-   --list=<regexp>     Generate source listing of matching routines
-   --disasm=<regexp>   Generate disassembly of matching routines
-   --symbols           Print demangled symbol names found at given addresses
-   --dot               Generate DOT file to stdout
-   --ps                Generate Postcript to stdout
-   --pdf               Generate PDF to stdout
-   --svg               Generate SVG to stdout
-   --gif               Generate GIF to stdout
-   --raw               Generate symbolized jeprof data (useful with remote fetch)
-
-Heap-Profile Options:
-   --inuse_space       Display in-use (mega)bytes [default]
-   --inuse_objects     Display in-use objects
-   --alloc_space       Display allocated (mega)bytes
-   --alloc_objects     Display allocated objects
-   --show_bytes        Display space in bytes
-   --drop_negative     Ignore negative differences
-
-Contention-profile options:
-   --total_delay       Display total delay at each region [default]
-   --contentions       Display number of delays at each region
-   --mean_delay        Display mean delay at each region
-
-Call-graph Options:
-   --nodecount=<n>     Show at most so many nodes [default=80]
-   --nodefraction=<f>  Hide nodes below <f>*total [default=.005]
-   --edgefraction=<f>  Hide edges below <f>*total [default=.001]
-   --maxdegree=<n>     Max incoming/outgoing edges per node [default=8]
-   --focus=<regexp>    Focus on backtraces with nodes matching <regexp>
-   --thread=<n>        Show profile for thread <n>
-   --ignore=<regexp>   Ignore backtraces with nodes matching <regexp>
-   --scale=<n>         Set GV scaling [default=0]
-   --heapcheck         Make nodes with non-0 object counts
-                       (i.e. direct leak generators) more visible
-   --retain=<regexp>   Retain only nodes that match <regexp>
-   --exclude=<regexp>  Exclude all nodes that match <regexp>
-
-Miscellaneous:
-   --tools=<prefix or binary:fullpath>[,...]   \$PATH for object tool pathnames
-   --test              Run unit tests
-   --help              This message
-   --version           Version information
-
-Environment Variables:
-   JEPROF_TMPDIR        Profiles directory. Defaults to \$HOME/jeprof
-   JEPROF_TOOLS         Prefix for object tools pathnames
-
-Examples:
-
-jeprof /bin/ls ls.prof
-                       Enters "interactive" mode
-jeprof --text /bin/ls ls.prof
-                       Outputs one line per procedure
-jeprof --web /bin/ls ls.prof
-                       Displays annotated call-graph in web browser
-jeprof --gv /bin/ls ls.prof
-                       Displays annotated call-graph via 'gv'
-jeprof --gv --focus=Mutex /bin/ls ls.prof
-                       Restricts to code paths including a .*Mutex.* entry
-jeprof --gv --focus=Mutex --ignore=string /bin/ls ls.prof
-                       Code paths including Mutex but not string
-jeprof --list=getdir /bin/ls ls.prof
-                       (Per-line) annotated source listing for getdir()
-jeprof --disasm=getdir /bin/ls ls.prof
-                       (Per-PC) annotated disassembly for getdir()
-
-jeprof http://localhost:1234/
-                       Enters "interactive" mode
-jeprof --text localhost:1234
-                       Outputs one line per procedure for localhost:1234
-jeprof --raw localhost:1234 > ./local.raw
-jeprof --text ./local.raw
-                       Fetches a remote profile for later analysis and then
-                       analyzes it in text mode.
-EOF
-}
-
-sub version_string {
-  return <<EOF
-jeprof (part of jemalloc $JEPROF_VERSION)
-based on pprof (part of gperftools $PPROF_VERSION)
-
-Copyright 1998-2007 Google Inc.
-
-This is BSD licensed software; see the source for copying conditions
-and license information.
-There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
-PARTICULAR PURPOSE.
-EOF
-}
-
-sub usage {
-  my $msg = shift;
-  print STDERR "$msg\n\n";
-  print STDERR usage_string();
-  print STDERR "\nFATAL ERROR: $msg\n";    # just as a reminder
-  exit(1);
-}
-
-sub Init() {
-  # Setup tmp-file name and handler to clean it up.
-  # We do this in the very beginning so that we can use
-  # error() and cleanup() function anytime here after.
-  $main::tmpfile_sym = "/tmp/jeprof$$.sym";
-  $main::tmpfile_ps = "/tmp/jeprof$$";
-  $main::next_tmpfile = 0;
-  $SIG{'INT'} = \&sighandler;
-
-  # Cache from filename/linenumber to source code
-  $main::source_cache = ();
-
-  $main::opt_help = 0;
-  $main::opt_version = 0;
-
-  $main::opt_cum = 0;
-  $main::opt_base = '';
-  $main::opt_addresses = 0;
-  $main::opt_lines = 0;
-  $main::opt_functions = 0;
-  $main::opt_files = 0;
-  $main::opt_lib_prefix = "";
-
-  $main::opt_text = 0;
-  $main::opt_callgrind = 0;
-  $main::opt_list = "";
-  $main::opt_disasm = "";
-  $main::opt_symbols = 0;
-  $main::opt_gv = 0;
-  $main::opt_evince = 0;
-  $main::opt_web = 0;
-  $main::opt_dot = 0;
-  $main::opt_ps = 0;
-  $main::opt_pdf = 0;
-  $main::opt_gif = 0;
-  $main::opt_svg = 0;
-  $main::opt_raw = 0;
-
-  $main::opt_nodecount = 80;
-  $main::opt_nodefraction = 0.005;
-  $main::opt_edgefraction = 0.001;
-  $main::opt_maxdegree = 8;
-  $main::opt_focus = '';
-  $main::opt_thread = undef;
-  $main::opt_ignore = '';
-  $main::opt_scale = 0;
-  $main::opt_heapcheck = 0;
-  $main::opt_retain = '';
-  $main::opt_exclude = '';
-  $main::opt_seconds = 30;
-  $main::opt_lib = "";
-
-  $main::opt_inuse_space   = 0;
-  $main::opt_inuse_objects = 0;
-  $main::opt_alloc_space   = 0;
-  $main::opt_alloc_objects = 0;
-  $main::opt_show_bytes    = 0;
-  $main::opt_drop_negative = 0;
-  $main::opt_interactive   = 0;
-
-  $main::opt_total_delay = 0;
-  $main::opt_contentions = 0;
-  $main::opt_mean_delay = 0;
-
-  $main::opt_tools   = "";
-  $main::opt_debug   = 0;
-  $main::opt_test    = 0;
-
-  # These are undocumented flags used only by unittests.
-  $main::opt_test_stride = 0;
-
-  # Are we using $SYMBOL_PAGE?
-  $main::use_symbol_page = 0;
-
-  # Files returned by TempName.
-  %main::tempnames = ();
-
-  # Type of profile we are dealing with
-  # Supported types:
-  #     cpu
-  #     heap
-  #     growth
-  #     contention
-  $main::profile_type = '';     # Empty type means "unknown"
-
-  GetOptions("help!"          => \$main::opt_help,
-             "version!"       => \$main::opt_version,
-             "cum!"           => \$main::opt_cum,
-             "base=s"         => \$main::opt_base,
-             "seconds=i"      => \$main::opt_seconds,
-             "add_lib=s"      => \$main::opt_lib,
-             "lib_prefix=s"   => \$main::opt_lib_prefix,
-             "functions!"     => \$main::opt_functions,
-             "lines!"         => \$main::opt_lines,
-             "addresses!"     => \$main::opt_addresses,
-             "files!"         => \$main::opt_files,
-             "text!"          => \$main::opt_text,
-             "callgrind!"     => \$main::opt_callgrind,
-             "list=s"         => \$main::opt_list,
-             "disasm=s"       => \$main::opt_disasm,
-             "symbols!"       => \$main::opt_symbols,
-             "gv!"            => \$main::opt_gv,
-             "evince!"        => \$main::opt_evince,
-             "web!"           => \$main::opt_web,
-             "dot!"           => \$main::opt_dot,
-             "ps!"            => \$main::opt_ps,
-             "pdf!"           => \$main::opt_pdf,
-             "svg!"           => \$main::opt_svg,
-             "gif!"           => \$main::opt_gif,
-             "raw!"           => \$main::opt_raw,
-             "interactive!"   => \$main::opt_interactive,
-             "nodecount=i"    => \$main::opt_nodecount,
-             "nodefraction=f" => \$main::opt_nodefraction,
-             "edgefraction=f" => \$main::opt_edgefraction,
-             "maxdegree=i"    => \$main::opt_maxdegree,
-             "focus=s"        => \$main::opt_focus,
-             "thread=s"       => \$main::opt_thread,
-             "ignore=s"       => \$main::opt_ignore,
-             "scale=i"        => \$main::opt_scale,
-             "heapcheck"      => \$main::opt_heapcheck,
-             "retain=s"       => \$main::opt_retain,
-             "exclude=s"      => \$main::opt_exclude,
-             "inuse_space!"   => \$main::opt_inuse_space,
-             "inuse_objects!" => \$main::opt_inuse_objects,
-             "alloc_space!"   => \$main::opt_alloc_space,
-             "alloc_objects!" => \$main::opt_alloc_objects,
-             "show_bytes!"    => \$main::opt_show_bytes,
-             "drop_negative!" => \$main::opt_drop_negative,
-             "total_delay!"   => \$main::opt_total_delay,
-             "contentions!"   => \$main::opt_contentions,
-             "mean_delay!"    => \$main::opt_mean_delay,
-             "tools=s"        => \$main::opt_tools,
-             "test!"          => \$main::opt_test,
-             "debug!"         => \$main::opt_debug,
-             # Undocumented flags used only by unittests:
-             "test_stride=i"  => \$main::opt_test_stride,
-      ) || usage("Invalid option(s)");
-
-  # Deal with the standard --help and --version
-  if ($main::opt_help) {
-    print usage_string();
-    exit(0);
-  }
-
-  if ($main::opt_version) {
-    print version_string();
-    exit(0);
-  }
-
-  # Disassembly/listing/symbols mode requires address-level info
-  if ($main::opt_disasm || $main::opt_list || $main::opt_symbols) {
-    $main::opt_functions = 0;
-    $main::opt_lines = 0;
-    $main::opt_addresses = 1;
-    $main::opt_files = 0;
-  }
-
-  # Check heap-profiling flags
-  if ($main::opt_inuse_space +
-      $main::opt_inuse_objects +
-      $main::opt_alloc_space +
-      $main::opt_alloc_objects > 1) {
-    usage("Specify at most on of --inuse/--alloc options");
-  }
-
-  # Check output granularities
-  my $grains =
-      $main::opt_functions +
-      $main::opt_lines +
-      $main::opt_addresses +
-      $main::opt_files +
-      0;
-  if ($grains > 1) {
-    usage("Only specify one output granularity option");
-  }
-  if ($grains == 0) {
-    $main::opt_functions = 1;
-  }
-
-  # Check output modes
-  my $modes =
-      $main::opt_text +
-      $main::opt_callgrind +
-      ($main::opt_list eq '' ? 0 : 1) +
-      ($main::opt_disasm eq '' ? 0 : 1) +
-      ($main::opt_symbols == 0 ? 0 : 1) +
-      $main::opt_gv +
-      $main::opt_evince +
-      $main::opt_web +
-      $main::opt_dot +
-      $main::opt_ps +
-      $main::opt_pdf +
-      $main::opt_svg +
-      $main::opt_gif +
-      $main::opt_raw +
-      $main::opt_interactive +
-      0;
-  if ($modes > 1) {
-    usage("Only specify one output mode");
-  }
-  if ($modes == 0) {
-    if (-t STDOUT) {  # If STDOUT is a tty, activate interactive mode
-      $main::opt_interactive = 1;
-    } else {
-      $main::opt_text = 1;
-    }
-  }
-
-  if ($main::opt_test) {
-    RunUnitTests();
-    # Should not return
-    exit(1);
-  }
-
-  # Binary name and profile arguments list
-  $main::prog = "";
-  @main::pfile_args = ();
-
-  # Remote profiling without a binary (using $SYMBOL_PAGE instead)
-  if (@ARGV > 0) {
-    if (IsProfileURL($ARGV[0])) {
-      $main::use_symbol_page = 1;
-    } elsif (IsSymbolizedProfileFile($ARGV[0])) {
-      $main::use_symbolized_profile = 1;
-      $main::prog = $UNKNOWN_BINARY;  # will be set later from the profile file
-    }
-  }
-
-  if ($main::use_symbol_page || $main::use_symbolized_profile) {
-    # We don't need a binary!
-    my %disabled = ('--lines' => $main::opt_lines,
-                    '--disasm' => $main::opt_disasm);
-    for my $option (keys %disabled) {
-      usage("$option cannot be used without a binary") if $disabled{$option};
-    }
-    # Set $main::prog later...
-    scalar(@ARGV) || usage("Did not specify profile file");
-  } elsif ($main::opt_symbols) {
-    # --symbols needs a binary-name (to run nm on, etc) but not profiles
-    $main::prog = shift(@ARGV) || usage("Did not specify program");
-  } else {
-    $main::prog = shift(@ARGV) || usage("Did not specify program");
-    scalar(@ARGV) || usage("Did not specify profile file");
-  }
-
-  # Parse profile file/location arguments
-  foreach my $farg (@ARGV) {
-    if ($farg =~ m/(.*)\@([0-9]+)(|\/.*)$/ ) {
-      my $machine = $1;
-      my $num_machines = $2;
-      my $path = $3;
-      for (my $i = 0; $i < $num_machines; $i++) {
-        unshift(@main::pfile_args, "$i.$machine$path");
-      }
-    } else {
-      unshift(@main::pfile_args, $farg);
-    }
-  }
-
-  if ($main::use_symbol_page) {
-    unless (IsProfileURL($main::pfile_args[0])) {
-      error("The first profile should be a remote form to use $SYMBOL_PAGE\n");
-    }
-    CheckSymbolPage();
-    $main::prog = FetchProgramName();
-  } elsif (!$main::use_symbolized_profile) {  # may not need objtools!
-    ConfigureObjTools($main::prog)
-  }
-
-  # Break the opt_lib_prefix into the prefix_list array
-  @prefix_list = split (',', $main::opt_lib_prefix);
-
-  # Remove trailing / from the prefixes, in the list to prevent
-  # searching things like /my/path//lib/mylib.so
-  foreach (@prefix_list) {
-    s|/+$||;
-  }
-}
-
-sub FilterAndPrint {
-  my ($profile, $symbols, $libs, $thread) = @_;
-
-  # Get total data in profile
-  my $total = TotalProfile($profile);
-
-  # Remove uniniteresting stack items
-  $profile = RemoveUninterestingFrames($symbols, $profile);
-
-  # Focus?
-  if ($main::opt_focus ne '') {
-    $profile = FocusProfile($symbols, $profile, $main::opt_focus);
-  }
-
-  # Ignore?
-  if ($main::opt_ignore ne '') {
-    $profile = IgnoreProfile($symbols, $profile, $main::opt_ignore);
-  }
-
-  my $calls = ExtractCalls($symbols, $profile);
-
-  # Reduce profiles to required output granularity, and also clean
-  # each stack trace so a given entry exists at most once.
-  my $reduced = ReduceProfile($symbols, $profile);
-
-  # Get derived profiles
-  my $flat = FlatProfile($reduced);
-  my $cumulative = CumulativeProfile($reduced);
-
-  # Print
-  if (!$main::opt_interactive) {
-    if ($main::opt_disasm) {
-      PrintDisassembly($libs, $flat, $cumulative, $main::opt_disasm);
-    } elsif ($main::opt_list) {
-      PrintListing($total, $libs, $flat, $cumulative, $main::opt_list, 0);
-    } elsif ($main::opt_text) {
-      # Make sure the output is empty when have nothing to report
-      # (only matters when --heapcheck is given but we must be
-      # compatible with old branches that did not pass --heapcheck always):
-      if ($total != 0) {
-        printf("Total%s: %s %s\n",
-               (defined($thread) ? " (t$thread)" : ""),
-               Unparse($total), Units());
-      }
-      PrintText($symbols, $flat, $cumulative, -1);
-    } elsif ($main::opt_raw) {
-      PrintSymbolizedProfile($symbols, $profile, $main::prog);
-    } elsif ($main::opt_callgrind) {
-      PrintCallgrind($calls);
-    } else {
-      if (PrintDot($main::prog, $symbols, $profile, $flat, $cumulative, $total)) {
-        if ($main::opt_gv) {
-          RunGV(TempName($main::next_tmpfile, "ps"), "");
-        } elsif ($main::opt_evince) {
-          RunEvince(TempName($main::next_tmpfile, "pdf"), "");
-        } elsif ($main::opt_web) {
-          my $tmp = TempName($main::next_tmpfile, "svg");
-          RunWeb($tmp);
-          # The command we run might hand the file name off
-          # to an already running browser instance and then exit.
-          # Normally, we'd remove $tmp on exit (right now),
-          # but fork a child to remove $tmp a little later, so that the
-          # browser has time to load it first.
-          delete $main::tempnames{$tmp};
-          if (fork() == 0) {
-            sleep 5;
-            unlink($tmp);
-            exit(0);
-          }
-        }
-      } else {
-        cleanup();
-        exit(1);
-      }
-    }
-  } else {
-    InteractiveMode($profile, $symbols, $libs, $total);
-  }
-}
-
-sub Main() {
-  Init();
-  $main::collected_profile = undef;
-  @main::profile_files = ();
-  $main::op_time = time();
-
-  # Printing symbols is special and requires a lot less info that most.
-  if ($main::opt_symbols) {
-    PrintSymbols(*STDIN);   # Get /proc/maps and symbols output from stdin
-    return;
-  }
-
-  # Fetch all profile data
-  FetchDynamicProfiles();
-
-  # this will hold symbols that we read from the profile files
-  my $symbol_map = {};
-
-  # Read one profile, pick the last item on the list
-  my $data = ReadProfile($main::prog, pop(@main::profile_files));
-  my $profile = $data->{profile};
-  my $pcs = $data->{pcs};
-  my $libs = $data->{libs};   # Info about main program and shared libraries
-  $symbol_map = MergeSymbols($symbol_map, $data->{symbols});
-
-  # Add additional profiles, if available.
-  if (scalar(@main::profile_files) > 0) {
-    foreach my $pname (@main::profile_files) {
-      my $data2 = ReadProfile($main::prog, $pname);
-      $profile = AddProfile($profile, $data2->{profile});
-      $pcs = AddPcs($pcs, $data2->{pcs});
-      $symbol_map = MergeSymbols($symbol_map, $data2->{symbols});
-    }
-  }
-
-  # Subtract base from profile, if specified
-  if ($main::opt_base ne '') {
-    my $base = ReadProfile($main::prog, $main::opt_base);
-    $profile = SubtractProfile($profile, $base->{profile});
-    $pcs = AddPcs($pcs, $base->{pcs});
-    $symbol_map = MergeSymbols($symbol_map, $base->{symbols});
-  }
-
-  # Collect symbols
-  my $symbols;
-  if ($main::use_symbolized_profile) {
-    $symbols = FetchSymbols($pcs, $symbol_map);
-  } elsif ($main::use_symbol_page) {
-    $symbols = FetchSymbols($pcs);
-  } else {
-    # TODO(csilvers): $libs uses the /proc/self/maps data from profile1,
-    # which may differ from the data from subsequent profiles, especially
-    # if they were run on different machines.  Use appropriate libs for
-    # each pc somehow.
-    $symbols = ExtractSymbols($libs, $pcs);
-  }
-
-  if (!defined($main::opt_thread)) {
-    FilterAndPrint($profile, $symbols, $libs);
-  }
-  if (defined($data->{threads})) {
-    foreach my $thread (sort { $a <=> $b } keys(%{$data->{threads}})) {
-      if (defined($main::opt_thread) &&
-          ($main::opt_thread eq '*' || $main::opt_thread == $thread)) {
-        my $thread_profile = $data->{threads}{$thread};
-        FilterAndPrint($thread_profile, $symbols, $libs, $thread);
-      }
-    }
-  }
-
-  cleanup();
-  exit(0);
-}
-
-##### Entry Point #####
-
-Main();
-
-# Temporary code to detect if we're running on a Goobuntu system.
-# These systems don't have the right stuff installed for the special
-# Readline libraries to work, so as a temporary workaround, we default
-# to using the normal stdio code, rather than the fancier readline-based
-# code
-sub ReadlineMightFail {
-  if (-e '/lib/libtermcap.so.2') {
-    return 0;  # libtermcap exists, so readline should be okay
-  } else {
-    return 1;
-  }
-}
-
-sub RunGV {
-  my $fname = shift;
-  my $bg = shift;       # "" or " &" if we should run in background
-  if (!system(ShellEscape(@GV, "--version") . " >$dev_null 2>&1")) {
-    # Options using double dash are supported by this gv version.
-    # Also, turn on noantialias to better handle bug in gv for
-    # postscript files with large dimensions.
-    # TODO: Maybe we should not pass the --noantialias flag
-    # if the gv version is known to work properly without the flag.
-    system(ShellEscape(@GV, "--scale=$main::opt_scale", "--noantialias", $fname)
-           . $bg);
-  } else {
-    # Old gv version - only supports options that use single dash.
-    print STDERR ShellEscape(@GV, "-scale", $main::opt_scale) . "\n";
-    system(ShellEscape(@GV, "-scale", "$main::opt_scale", $fname) . $bg);
-  }
-}
-
-sub RunEvince {
-  my $fname = shift;
-  my $bg = shift;       # "" or " &" if we should run in background
-  system(ShellEscape(@EVINCE, $fname) . $bg);
-}
-
-sub RunWeb {
-  my $fname = shift;
-  print STDERR "Loading web page file:///$fname\n";
-
-  if (`uname` =~ /Darwin/) {
-    # OS X: open will use standard preference for SVG files.
-    system("/usr/bin/open", $fname);
-    return;
-  }
-
-  # Some kind of Unix; try generic symlinks, then specific browsers.
-  # (Stop once we find one.)
-  # Works best if the browser is already running.
-  my @alt = (
-    "/etc/alternatives/gnome-www-browser",
-    "/etc/alternatives/x-www-browser",
-    "google-chrome",
-    "firefox",
-  );
-  foreach my $b (@alt) {
-    if (system($b, $fname) == 0) {
-      return;
-    }
-  }
-
-  print STDERR "Could not load web browser.\n";
-}
-
-sub RunKcachegrind {
-  my $fname = shift;
-  my $bg = shift;       # "" or " &" if we should run in background
-  print STDERR "Starting '@KCACHEGRIND " . $fname . $bg . "'\n";
-  system(ShellEscape(@KCACHEGRIND, $fname) . $bg);
-}
-
-
-##### Interactive helper routines #####
-
-sub InteractiveMode {
-  $| = 1;  # Make output unbuffered for interactive mode
-  my ($orig_profile, $symbols, $libs, $total) = @_;
-
-  print STDERR "Welcome to jeprof!  For help, type 'help'.\n";
-
-  # Use ReadLine if it's installed and input comes from a console.
-  if ( -t STDIN &&
-       !ReadlineMightFail() &&
-       defined(eval {require Term::ReadLine}) ) {
-    my $term = new Term::ReadLine 'jeprof';
-    while ( defined ($_ = $term->readline('(jeprof) '))) {
-      $term->addhistory($_) if /\S/;
-      if (!InteractiveCommand($orig_profile, $symbols, $libs, $total, $_)) {
-        last;    # exit when we get an interactive command to quit
-      }
-    }
-  } else {       # don't have readline
-    while (1) {
-      print STDERR "(jeprof) ";
-      $_ = <STDIN>;
-      last if ! defined $_ ;
-      s/\r//g;         # turn windows-looking lines into unix-looking lines
-
-      # Save some flags that might be reset by InteractiveCommand()
-      my $save_opt_lines = $main::opt_lines;
-
-      if (!InteractiveCommand($orig_profile, $symbols, $libs, $total, $_)) {
-        last;    # exit when we get an interactive command to quit
-      }
-
-      # Restore flags
-      $main::opt_lines = $save_opt_lines;
-    }
-  }
-}
-
-# Takes two args: orig profile, and command to run.
-# Returns 1 if we should keep going, or 0 if we were asked to quit
-sub InteractiveCommand {
-  my($orig_profile, $symbols, $libs, $total, $command) = @_;
-  $_ = $command;                # just to make future m//'s easier
-  if (!defined($_)) {
-    print STDERR "\n";
-    return 0;
-  }
-  if (m/^\s*quit/) {
-    return 0;
-  }
-  if (m/^\s*help/) {
-    InteractiveHelpMessage();
-    return 1;
-  }
-  # Clear all the mode options -- mode is controlled by "$command"
-  $main::opt_text = 0;
-  $main::opt_callgrind = 0;
-  $main::opt_disasm = 0;
-  $main::opt_list = 0;
-  $main::opt_gv = 0;
-  $main::opt_evince = 0;
-  $main::opt_cum = 0;
-
-  if (m/^\s*(text|top)(\d*)\s*(.*)/) {
-    $main::opt_text = 1;
-
-    my $line_limit = ($2 ne "") ? int($2) : 10;
-
-    my $routine;
-    my $ignore;
-    ($routine, $ignore) = ParseInteractiveArgs($3);
-
-    my $profile = ProcessProfile($total, $orig_profile, $symbols, "", $ignore);
-    my $reduced = ReduceProfile($symbols, $profile);
-
-    # Get derived profiles
-    my $flat = FlatProfile($reduced);
-    my $cumulative = CumulativeProfile($reduced);
-
-    PrintText($symbols, $flat, $cumulative, $line_limit);
-    return 1;
-  }
-  if (m/^\s*callgrind\s*([^ \n]*)/) {
-    $main::opt_callgrind = 1;
-
-    # Get derived profiles
-    my $calls = ExtractCalls($symbols, $orig_profile);
-    my $filename = $1;
-    if ( $1 eq '' ) {
-      $filename = TempName($main::next_tmpfile, "callgrind");
-    }
-    PrintCallgrind($calls, $filename);
-    if ( $1 eq '' ) {
-      RunKcachegrind($filename, " & ");
-      $main::next_tmpfile++;
-    }
-
-    return 1;
-  }
-  if (m/^\s*(web)?list\s*(.+)/) {
-    my $html = (defined($1) && ($1 eq "web"));
-    $main::opt_list = 1;
-
-    my $routine;
-    my $ignore;
-    ($routine, $ignore) = ParseInteractiveArgs($2);
-
-    my $profile = ProcessProfile($total, $orig_profile, $symbols, "", $ignore);
-    my $reduced = ReduceProfile($symbols, $profile);
-
-    # Get derived profiles
-    my $flat = FlatProfile($reduced);
-    my $cumulative = CumulativeProfile($reduced);
-
-    PrintListing($total, $libs, $flat, $cumulative, $routine, $html);
-    return 1;
-  }
-  if (m/^\s*disasm\s*(.+)/) {
-    $main::opt_disasm = 1;
-
-    my $routine;
-    my $ignore;
-    ($routine, $ignore) = ParseInteractiveArgs($1);
-
-    # Process current profile to account for various settings
-    my $profile = ProcessProfile($total, $orig_profile, $symbols, "", $ignore);
-    my $reduced = ReduceProfile($symbols, $profile);
-
-    # Get derived profiles
-    my $flat = FlatProfile($reduced);
-    my $cumulative = CumulativeProfile($reduced);
-
-    PrintDisassembly($libs, $flat, $cumulative, $routine);
-    return 1;
-  }
-  if (m/^\s*(gv|web|evince)\s*(.*)/) {
-    $main::opt_gv = 0;
-    $main::opt_evince = 0;
-    $main::opt_web = 0;
-    if ($1 eq "gv") {
-      $main::opt_gv = 1;
-    } elsif ($1 eq "evince") {
-      $main::opt_evince = 1;
-    } elsif ($1 eq "web") {
-      $main::opt_web = 1;
-    }
-
-    my $focus;
-    my $ignore;
-    ($focus, $ignore) = ParseInteractiveArgs($2);
-
-    # Process current profile to account for various settings
-    my $profile = ProcessProfile($total, $orig_profile, $symbols,
-                                 $focus, $ignore);
-    my $reduced = ReduceProfile($symbols, $profile);
-
-    # Get derived profiles
-    my $flat = FlatProfile($reduced);
-    my $cumulative = CumulativeProfile($reduced);
-
-    if (PrintDot($main::prog, $symbols, $profile, $flat, $cumulative, $total)) {
-      if ($main::opt_gv) {
-        RunGV(TempName($main::next_tmpfile, "ps"), " &");
-      } elsif ($main::opt_evince) {
-        RunEvince(TempName($main::next_tmpfile, "pdf"), " &");
-      } elsif ($main::opt_web) {
-        RunWeb(TempName($main::next_tmpfile, "svg"));
-      }
-      $main::next_tmpfile++;
-    }
-    return 1;
-  }
-  if (m/^\s*$/) {
-    return 1;
-  }
-  print STDERR "Unknown command: try 'help'.\n";
-  return 1;
-}
-
-
-sub ProcessProfile {
-  my $total_count = shift;
-  my $orig_profile = shift;
-  my $symbols = shift;
-  my $focus = shift;
-  my $ignore = shift;
-
-  # Process current profile to account for various settings
-  my $profile = $orig_profile;
-  printf("Total: %s %s\n", Unparse($total_count), Units());
-  if ($focus ne '') {
-    $profile = FocusProfile($symbols, $profile, $focus);
-    my $focus_count = TotalProfile($profile);
-    printf("After focusing on '%s': %s %s of %s (%0.1f%%)\n",
-           $focus,
-           Unparse($focus_count), Units(),
-           Unparse($total_count), ($focus_count*100.0) / $total_count);
-  }
-  if ($ignore ne '') {
-    $profile = IgnoreProfile($symbols, $profile, $ignore);
-    my $ignore_count = TotalProfile($profile);
-    printf("After ignoring '%s': %s %s of %s (%0.1f%%)\n",
-           $ignore,
-           Unparse($ignore_count), Units(),
-           Unparse($total_count),
-           ($ignore_count*100.0) / $total_count);
-  }
-
-  return $profile;
-}
-
-sub InteractiveHelpMessage {
-  print STDERR <<ENDOFHELP;
-Interactive jeprof mode
-
-Commands:
-  gv
-  gv [focus] [-ignore1] [-ignore2]
-      Show graphical hierarchical display of current profile.  Without
-      any arguments, shows all samples in the profile.  With the optional
-      "focus" argument, restricts the samples shown to just those where
-      the "focus" regular expression matches a routine name on the stack
-      trace.
-
-  web
-  web [focus] [-ignore1] [-ignore2]
-      Like GV, but displays profile in your web browser instead of using
-      Ghostview. Works best if your web browser is already running.
-      To change the browser that gets used:
-      On Linux, set the /etc/alternatives/gnome-www-browser symlink.
-      On OS X, change the Finder association for SVG files.
-
-  list [routine_regexp] [-ignore1] [-ignore2]
-      Show source listing of routines whose names match "routine_regexp"
-
-  weblist [routine_regexp] [-ignore1] [-ignore2]
-     Displays a source listing of routines whose names match "routine_regexp"
-     in a web browser.  You can click on source lines to view the
-     corresponding disassembly.
-
-  top [--cum] [-ignore1] [-ignore2]
-  top20 [--cum] [-ignore1] [-ignore2]
-  top37 [--cum] [-ignore1] [-ignore2]
-      Show top lines ordered by flat profile count, or cumulative count
-      if --cum is specified.  If a number is present after 'top', the
-      top K routines will be shown (defaults to showing the top 10)
-
-  disasm [routine_regexp] [-ignore1] [-ignore2]
-      Show disassembly of routines whose names match "routine_regexp",
-      annotated with sample counts.
-
-  callgrind
-  callgrind [filename]
-      Generates callgrind file. If no filename is given, kcachegrind is called.
-
-  help - This listing
-  quit or ^D - End jeprof
-
-For commands that accept optional -ignore tags, samples where any routine in
-the stack trace matches the regular expression in any of the -ignore
-parameters will be ignored.
-
-Further pprof details are available at this location (or one similar):
-
- /usr/doc/gperftools-$PPROF_VERSION/cpu_profiler.html
- /usr/doc/gperftools-$PPROF_VERSION/heap_profiler.html
-
-ENDOFHELP
-}
-sub ParseInteractiveArgs {
-  my $args = shift;
-  my $focus = "";
-  my $ignore = "";
-  my @x = split(/ +/, $args);
-  foreach $a (@x) {
-    if ($a =~ m/^(--|-)lines$/) {
-      $main::opt_lines = 1;
-    } elsif ($a =~ m/^(--|-)cum$/) {
-      $main::opt_cum = 1;
-    } elsif ($a =~ m/^-(.*)/) {
-      $ignore .= (($ignore ne "") ? "|" : "" ) . $1;
-    } else {
-      $focus .= (($focus ne "") ? "|" : "" ) . $a;
-    }
-  }
-  if ($ignore ne "") {
-    print STDERR "Ignoring samples in call stacks that match '$ignore'\n";
-  }
-  return ($focus, $ignore);
-}
-
-##### Output code #####
-
-sub TempName {
-  my $fnum = shift;
-  my $ext = shift;
-  my $file = "$main::tmpfile_ps.$fnum.$ext";
-  $main::tempnames{$file} = 1;
-  return $file;
-}
-
-# Print profile data in packed binary format (64-bit) to standard out
-sub PrintProfileData {
-  my $profile = shift;
-
-  # print header (64-bit style)
-  # (zero) (header-size) (version) (sample-period) (zero)
-  print pack('L*', 0, 0, 3, 0, 0, 0, 1, 0, 0, 0);
-
-  foreach my $k (keys(%{$profile})) {
-    my $count = $profile->{$k};
-    my @addrs = split(/\n/, $k);
-    if ($#addrs >= 0) {
-      my $depth = $#addrs + 1;
-      # int(foo / 2**32) is the only reliable way to get rid of bottom
-      # 32 bits on both 32- and 64-bit systems.
-      print pack('L*', $count & 0xFFFFFFFF, int($count / 2**32));
-      print pack('L*', $depth & 0xFFFFFFFF, int($depth / 2**32));
-
-      foreach my $full_addr (@addrs) {
-        my $addr = $full_addr;
-        $addr =~ s/0x0*//;  # strip off leading 0x, zeroes
-        if (length($addr) > 16) {
-          print STDERR "Invalid address in profile: $full_addr\n";
-          next;
-        }
-        my $low_addr = substr($addr, -8);       # get last 8 hex chars
-        my $high_addr = substr($addr, -16, 8);  # get up to 8 more hex chars
-        print pack('L*', hex('0x' . $low_addr), hex('0x' . $high_addr));
-      }
-    }
-  }
-}
-
-# Print symbols and profile data
-sub PrintSymbolizedProfile {
-  my $symbols = shift;
-  my $profile = shift;
-  my $prog = shift;
-
-  $SYMBOL_PAGE =~ m,[^/]+$,;    # matches everything after the last slash
-  my $symbol_marker = $&;
-
-  print '--- ', $symbol_marker, "\n";
-  if (defined($prog)) {
-    print 'binary=', $prog, "\n";
-  }
-  while (my ($pc, $name) = each(%{$symbols})) {
-    my $sep = ' ';
-    print '0x', $pc;
-    # We have a list of function names, which include the inlined
-    # calls.  They are separated (and terminated) by --, which is
-    # illegal in function names.
-    for (my $j = 2; $j <= $#{$name}; $j += 3) {
-      print $sep, $name->[$j];
-      $sep = '--';
-    }
-    print "\n";
-  }
-  print '---', "\n";
-
-  my $profile_marker;
-  if ($main::profile_type eq 'heap') {
-    $HEAP_PAGE =~ m,[^/]+$,;    # matches everything after the last slash
-    $profile_marker = $&;
-  } elsif ($main::profile_type eq 'growth') {
-    $GROWTH_PAGE =~ m,[^/]+$,;    # matches everything after the last slash
-    $profile_marker = $&;
-  } elsif ($main::profile_type eq 'contention') {
-    $CONTENTION_PAGE =~ m,[^/]+$,;    # matches everything after the last slash
-    $profile_marker = $&;
-  } else { # elsif ($main::profile_type eq 'cpu')
-    $PROFILE_PAGE =~ m,[^/]+$,;    # matches everything after the last slash
-    $profile_marker = $&;
-  }
-
-  print '--- ', $profile_marker, "\n";
-  if (defined($main::collected_profile)) {
-    # if used with remote fetch, simply dump the collected profile to output.
-    open(SRC, "<$main::collected_profile");
-    while (<SRC>) {
-      print $_;
-    }
-    close(SRC);
-  } else {
-    # --raw/http: For everything to work correctly for non-remote profiles, we
-    # would need to extend PrintProfileData() to handle all possible profile
-    # types, re-enable the code that is currently disabled in ReadCPUProfile()
-    # and FixCallerAddresses(), and remove the remote profile dumping code in
-    # the block above.
-    die "--raw/http: jeprof can only dump remote profiles for --raw\n";
-    # dump a cpu-format profile to standard out
-    PrintProfileData($profile);
-  }
-}
-
-# Print text output
-sub PrintText {
-  my $symbols = shift;
-  my $flat = shift;
-  my $cumulative = shift;
-  my $line_limit = shift;
-
-  my $total = TotalProfile($flat);
-
-  # Which profile to sort by?
-  my $s = $main::opt_cum ? $cumulative : $flat;
-
-  my $running_sum = 0;
-  my $lines = 0;
-  foreach my $k (sort { GetEntry($s, $b) <=> GetEntry($s, $a) || $a cmp $b }
-                 keys(%{$cumulative})) {
-    my $f = GetEntry($flat, $k);
-    my $c = GetEntry($cumulative, $k);
-    $running_sum += $f;
-
-    my $sym = $k;
-    if (exists($symbols->{$k})) {
-      $sym = $symbols->{$k}->[0] . " " . $symbols->{$k}->[1];
-      if ($main::opt_addresses) {
-        $sym = $k . " " . $sym;
-      }
-    }
-
-    if ($f != 0 || $c != 0) {
-      printf("%8s %6s %6s %8s %6s %s\n",
-             Unparse($f),
-             Percent($f, $total),
-             Percent($running_sum, $total),
-             Unparse($c),
-             Percent($c, $total),
-             $sym);
-    }
-    $lines++;
-    last if ($line_limit >= 0 && $lines >= $line_limit);
-  }
-}
-
-# Callgrind format has a compression for repeated function and file
-# names.  You show the name the first time, and just use its number
-# subsequently.  This can cut down the file to about a third or a
-# quarter of its uncompressed size.  $key and $val are the key/value
-# pair that would normally be printed by callgrind; $map is a map from
-# value to number.
-sub CompressedCGName {
-  my($key, $val, $map) = @_;
-  my $idx = $map->{$val};
-  # For very short keys, providing an index hurts rather than helps.
-  if (length($val) <= 3) {
-    return "$key=$val\n";
-  } elsif (defined($idx)) {
-    return "$key=($idx)\n";
-  } else {
-    # scalar(keys $map) gives the number of items in the map.
-    $idx = scalar(keys(%{$map})) + 1;
-    $map->{$val} = $idx;
-    return "$key=($idx) $val\n";
-  }
-}
-
-# Print the call graph in a way that's suiteable for callgrind.
-sub PrintCallgrind {
-  my $calls = shift;
-  my $filename;
-  my %filename_to_index_map;
-  my %fnname_to_index_map;
-
-  if ($main::opt_interactive) {
-    $filename = shift;
-    print STDERR "Writing callgrind file to '$filename'.\n"
-  } else {
-    $filename = "&STDOUT";
-  }
-  open(CG, ">$filename");
-  printf CG ("events: Hits\n\n");
-  foreach my $call ( map { $_->[0] }
-                     sort { $a->[1] cmp $b ->[1] ||
-                            $a->[2] <=> $b->[2] }
-                     map { /([^:]+):(\d+):([^ ]+)( -> ([^:]+):(\d+):(.+))?/;
-                           [$_, $1, $2] }
-                     keys %$calls ) {
-    my $count = int($calls->{$call});
-    $call =~ /([^:]+):(\d+):([^ ]+)( -> ([^:]+):(\d+):(.+))?/;
-    my ( $caller_file, $caller_line, $caller_function,
-         $callee_file, $callee_line, $callee_function ) =
-       ( $1, $2, $3, $5, $6, $7 );
-
-    # TODO(csilvers): for better compression, collect all the
-    # caller/callee_files and functions first, before printing
-    # anything, and only compress those referenced more than once.
-    printf CG CompressedCGName("fl", $caller_file, \%filename_to_index_map);
-    printf CG CompressedCGName("fn", $caller_function, \%fnname_to_index_map);
-    if (defined $6) {
-      printf CG CompressedCGName("cfl", $callee_file, \%filename_to_index_map);
-      printf CG CompressedCGName("cfn", $callee_function, \%fnname_to_index_map);
-      printf CG ("calls=$count $callee_line\n");
-    }
-    printf CG ("$caller_line $count\n\n");
-  }
-}
-
-# Print disassembly for all all routines that match $main::opt_disasm
-sub PrintDisassembly {
-  my $libs = shift;
-  my $flat = shift;
-  my $cumulative = shift;
-  my $disasm_opts = shift;
-
-  my $total = TotalProfile($flat);
-
-  foreach my $lib (@{$libs}) {
-    my $symbol_table = GetProcedureBoundaries($lib->[0], $disasm_opts);
-    my $offset = AddressSub($lib->[1], $lib->[3]);
-    foreach my $routine (sort ByName keys(%{$symbol_table})) {
-      my $start_addr = $symbol_table->{$routine}->[0];
-      my $end_addr = $symbol_table->{$routine}->[1];
-      # See if there are any samples in this routine
-      my $length = hex(AddressSub($end_addr, $start_addr));
-      my $addr = AddressAdd($start_addr, $offset);
-      for (my $i = 0; $i < $length; $i++) {
-        if (defined($cumulative->{$addr})) {
-          PrintDisassembledFunction($lib->[0], $offset,
-                                    $routine, $flat, $cumulative,
-                                    $start_addr, $end_addr, $total);
-          last;
-        }
-        $addr = AddressInc($addr);
-      }
-    }
-  }
-}
-
-# Return reference to array of tuples of the form:
-#       [start_address, filename, linenumber, instruction, limit_address]
-# E.g.,
-#       ["0x806c43d", "/foo/bar.cc", 131, "ret", "0x806c440"]
-sub Disassemble {
-  my $prog = shift;
-  my $offset = shift;
-  my $start_addr = shift;
-  my $end_addr = shift;
-
-  my $objdump = $obj_tool_map{"objdump"};
-  my $cmd = ShellEscape($objdump, "-C", "-d", "-l", "--no-show-raw-insn",
-                        "--start-address=0x$start_addr",
-                        "--stop-address=0x$end_addr", $prog);
-  open(OBJDUMP, "$cmd |") || error("$cmd: $!\n");
-  my @result = ();
-  my $filename = "";
-  my $linenumber = -1;
-  my $last = ["", "", "", ""];
-  while (<OBJDUMP>) {
-    s/\r//g;         # turn windows-looking lines into unix-looking lines
-    chop;
-    if (m|\s*([^:\s]+):(\d+)\s*$|) {
-      # Location line of the form:
-      #   <filename>:<linenumber>
-      $filename = $1;
-      $linenumber = $2;
-    } elsif (m/^ +([0-9a-f]+):\s*(.*)/) {
-      # Disassembly line -- zero-extend address to full length
-      my $addr = HexExtend($1);
-      my $k = AddressAdd($addr, $offset);
-      $last->[4] = $k;   # Store ending address for previous instruction
-      $last = [$k, $filename, $linenumber, $2, $end_addr];
-      push(@result, $last);
-    }
-  }
-  close(OBJDUMP);
-  return @result;
-}
-
-# The input file should contain lines of the form /proc/maps-like
-# output (same format as expected from the profiles) or that looks
-# like hex addresses (like "0xDEADBEEF").  We will parse all
-# /proc/maps output, and for all the hex addresses, we will output
-# "short" symbol names, one per line, in the same order as the input.
-sub PrintSymbols {
-  my $maps_and_symbols_file = shift;
-
-  # ParseLibraries expects pcs to be in a set.  Fine by us...
-  my @pclist = ();   # pcs in sorted order
-  my $pcs = {};
-  my $map = "";
-  foreach my $line (<$maps_and_symbols_file>) {
-    $line =~ s/\r//g;    # turn windows-looking lines into unix-looking lines
-    if ($line =~ /\b(0x[0-9a-f]+)\b/i) {
-      push(@pclist, HexExtend($1));
-      $pcs->{$pclist[-1]} = 1;
-    } else {
-      $map .= $line;
-    }
-  }
-
-  my $libs = ParseLibraries($main::prog, $map, $pcs);
-  my $symbols = ExtractSymbols($libs, $pcs);
-
-  foreach my $pc (@pclist) {
-    # ->[0] is the shortname, ->[2] is the full name
-    print(($symbols->{$pc}->[0] || "??") . "\n");
-  }
-}
-
-
-# For sorting functions by name
-sub ByName {
-  return ShortFunctionName($a) cmp ShortFunctionName($b);
-}
-
-# Print source-listing for all all routines that match $list_opts
-sub PrintListing {
-  my $total = shift;
-  my $libs = shift;
-  my $flat = shift;
-  my $cumulative = shift;
-  my $list_opts = shift;
-  my $html = shift;
-
-  my $output = \*STDOUT;
-  my $fname = "";
-
-  if ($html) {
-    # Arrange to write the output to a temporary file
-    $fname = TempName($main::next_tmpfile, "html");
-    $main::next_tmpfile++;
-    if (!open(TEMP, ">$fname")) {
-      print STDERR "$fname: $!\n";
-      return;
-    }
-    $output = \*TEMP;
-    print $output HtmlListingHeader();
-    printf $output ("<div class=\"legend\">%s<br>Total: %s %s</div>\n",
-                    $main::prog, Unparse($total), Units());
-  }
-
-  my $listed = 0;
-  foreach my $lib (@{$libs}) {
-    my $symbol_table = GetProcedureBoundaries($lib->[0], $list_opts);
-    my $offset = AddressSub($lib->[1], $lib->[3]);
-    foreach my $routine (sort ByName keys(%{$symbol_table})) {
-      # Print if there are any samples in this routine
-      my $start_addr = $symbol_table->{$routine}->[0];
-      my $end_addr = $symbol_table->{$routine}->[1];
-      my $length = hex(AddressSub($end_addr, $start_addr));
-      my $addr = AddressAdd($start_addr, $offset);
-      for (my $i = 0; $i < $length; $i++) {
-        if (defined($cumulative->{$addr})) {
-          $listed += PrintSource(
-            $lib->[0], $offset,
-            $routine, $flat, $cumulative,
-            $start_addr, $end_addr,
-            $html,
-            $output);
-          last;
-        }
-        $addr = AddressInc($addr);
-      }
-    }
-  }
-
-  if ($html) {
-    if ($listed > 0) {
-      print $output HtmlListingFooter();
-      close($output);
-      RunWeb($fname);
-    } else {
-      close($output);
-      unlink($fname);
-    }
-  }
-}
-
-sub HtmlListingHeader {
-  return <<'EOF';
-<DOCTYPE html>
-<html>
-<head>
-<title>Pprof listing</title>
-<style type="text/css">
-body {
-  font-family: sans-serif;
-}
-h1 {
-  font-size: 1.5em;
-  margin-bottom: 4px;
-}
-.legend {
-  font-size: 1.25em;
-}
-.line {
-  color: #aaaaaa;
-}
-.nop {
-  color: #aaaaaa;
-}
-.unimportant {
-  color: #cccccc;
-}
-.disasmloc {
-  color: #000000;
-}
-.deadsrc {
-  cursor: pointer;
-}
-.deadsrc:hover {
-  background-color: #eeeeee;
-}
-.livesrc {
-  color: #0000ff;
-  cursor: pointer;
-}
-.livesrc:hover {
-  background-color: #eeeeee;
-}
-.asm {
-  color: #008800;
-  display: none;
-}
-</style>
-<script type="text/javascript">
-function jeprof_toggle_asm(e) {
-  var target;
-  if (!e) e = window.event;
-  if (e.target) target = e.target;
-  else if (e.srcElement) target = e.srcElement;
-
-  if (target) {
-    var asm = target.nextSibling;
-    if (asm && asm.className == "asm") {
-      asm.style.display = (asm.style.display == "block" ? "" : "block");
-      e.preventDefault();
-      return false;
-    }
-  }
-}
-</script>
-</head>
-<body>
-EOF
-}
-
-sub HtmlListingFooter {
-  return <<'EOF';
-</body>
-</html>
-EOF
-}
-
-sub HtmlEscape {
-  my $text = shift;
-  $text =~ s/&/&amp;/g;
-  $text =~ s/</&lt;/g;
-  $text =~ s/>/&gt;/g;
-  return $text;
-}
-
-# Returns the indentation of the line, if it has any non-whitespace
-# characters.  Otherwise, returns -1.
-sub Indentation {
-  my $line = shift;
-  if (m/^(\s*)\S/) {
-    return length($1);
-  } else {
-    return -1;
-  }
-}
-
-# If the symbol table contains inlining info, Disassemble() may tag an
-# instruction with a location inside an inlined function.  But for
-# source listings, we prefer to use the location in the function we
-# are listing.  So use MapToSymbols() to fetch full location
-# information for each instruction and then pick out the first
-# location from a location list (location list contains callers before
-# callees in case of inlining).
-#
-# After this routine has run, each entry in $instructions contains:
-#   [0] start address
-#   [1] filename for function we are listing
-#   [2] line number for function we are listing
-#   [3] disassembly
-#   [4] limit address
-#   [5] most specific filename (may be different from [1] due to inlining)
-#   [6] most specific line number (may be different from [2] due to inlining)
-sub GetTopLevelLineNumbers {
-  my ($lib, $offset, $instructions) = @_;
-  my $pcs = [];
-  for (my $i = 0; $i <= $#{$instructions}; $i++) {
-    push(@{$pcs}, $instructions->[$i]->[0]);
-  }
-  my $symbols = {};
-  MapToSymbols($lib, $offset, $pcs, $symbols);
-  for (my $i = 0; $i <= $#{$instructions}; $i++) {
-    my $e = $instructions->[$i];
-    push(@{$e}, $e->[1]);
-    push(@{$e}, $e->[2]);
-    my $addr = $e->[0];
-    my $sym = $symbols->{$addr};
-    if (defined($sym)) {
-      if ($#{$sym} >= 2 && $sym->[1] =~ m/^(.*):(\d+)$/) {
-        $e->[1] = $1;  # File name
-        $e->[2] = $2;  # Line number
-      }
-    }
-  }
-}
-
-# Print source-listing for one routine
-sub PrintSource {
-  my $prog = shift;
-  my $offset = shift;
-  my $routine = shift;
-  my $flat = shift;
-  my $cumulative = shift;
-  my $start_addr = shift;
-  my $end_addr = shift;
-  my $html = shift;
-  my $output = shift;
-
-  # Disassemble all instructions (just to get line numbers)
-  my @instructions = Disassemble($prog, $offset, $start_addr, $end_addr);
-  GetTopLevelLineNumbers($prog, $offset, \@instructions);
-
-  # Hack 1: assume that the first source file encountered in the
-  # disassembly contains the routine
-  my $filename = undef;
-  for (my $i = 0; $i <= $#instructions; $i++) {
-    if ($instructions[$i]->[2] >= 0) {
-      $filename = $instructions[$i]->[1];
-      last;
-    }
-  }
-  if (!defined($filename)) {
-    print STDERR "no filename found in $routine\n";
-    return 0;
-  }
-
-  # Hack 2: assume that the largest line number from $filename is the
-  # end of the procedure.  This is typically safe since if P1 contains
-  # an inlined call to P2, then P2 usually occurs earlier in the
-  # source file.  If this does not work, we might have to compute a
-  # density profile or just print all regions we find.
-  my $lastline = 0;
-  for (my $i = 0; $i <= $#instructions; $i++) {
-    my $f = $instructions[$i]->[1];
-    my $l = $instructions[$i]->[2];
-    if (($f eq $filename) && ($l > $lastline)) {
-      $lastline = $l;
-    }
-  }
-
-  # Hack 3: assume the first source location from "filename" is the start of
-  # the source code.
-  my $firstline = 1;
-  for (my $i = 0; $i <= $#instructions; $i++) {
-    if ($instructions[$i]->[1] eq $filename) {
-      $firstline = $instructions[$i]->[2];
-      last;
-    }
-  }
-
-  # Hack 4: Extend last line forward until its indentation is less than
-  # the indentation we saw on $firstline
-  my $oldlastline = $lastline;
-  {
-    if (!open(FILE, "<$filename")) {
-      print STDERR "$filename: $!\n";
-      return 0;
-    }
-    my $l = 0;
-    my $first_indentation = -1;
-    while (<FILE>) {
-      s/\r//g;         # turn windows-looking lines into unix-looking lines
-      $l++;
-      my $indent = Indentation($_);
-      if ($l >= $firstline) {
-        if ($first_indentation < 0 && $indent >= 0) {
-          $first_indentation = $indent;
-          last if ($first_indentation == 0);
-        }
-      }
-      if ($l >= $lastline && $indent >= 0) {
-        if ($indent >= $first_indentation) {
-          $lastline = $l+1;
-        } else {
-          last;
-        }
-      }
-    }
-    close(FILE);
-  }
-
-  # Assign all samples to the range $firstline,$lastline,
-  # Hack 4: If an instruction does not occur in the range, its samples
-  # are moved to the next instruction that occurs in the range.
-  my $samples1 = {};        # Map from line number to flat count
-  my $samples2 = {};        # Map from line number to cumulative count
-  my $running1 = 0;         # Unassigned flat counts
-  my $running2 = 0;         # Unassigned cumulative counts
-  my $total1 = 0;           # Total flat counts
-  my $total2 = 0;           # Total cumulative counts
-  my %disasm = ();          # Map from line number to disassembly
-  my $running_disasm = "";  # Unassigned disassembly
-  my $skip_marker = "---\n";
-  if ($html) {
-    $skip_marker = "";
-    for (my $l = $firstline; $l <= $lastline; $l++) {
-      $disasm{$l} = "";
-    }
-  }
-  my $last_dis_filename = '';
-  my $last_dis_linenum = -1;
-  my $last_touched_line = -1;  # To detect gaps in disassembly for a line
-  foreach my $e (@instructions) {
-    # Add up counts for all address that fall inside this instruction
-    my $c1 = 0;
-    my $c2 = 0;
-    for (my $a = $e->[0]; $a lt $e->[4]; $a = AddressInc($a)) {
-      $c1 += GetEntry($flat, $a);
-      $c2 += GetEntry($cumulative, $a);
-    }
-
-    if ($html) {
-      my $dis = sprintf("      %6s %6s \t\t%8s: %s ",
-                        HtmlPrintNumber($c1),
-                        HtmlPrintNumber($c2),
-                        UnparseAddress($offset, $e->[0]),
-                        CleanDisassembly($e->[3]));
-
-      # Append the most specific source line associated with this instruction
-      if (length($dis) < 80) { $dis .= (' ' x (80 - length($dis))) };
-      $dis = HtmlEscape($dis);
-      my $f = $e->[5];
-      my $l = $e->[6];
-      if ($f ne $last_dis_filename) {
-        $dis .= sprintf("<span class=disasmloc>%s:%d</span>",
-                        HtmlEscape(CleanFileName($f)), $l);
-      } elsif ($l ne $last_dis_linenum) {
-        # De-emphasize the unchanged file name portion
-        $dis .= sprintf("<span class=unimportant>%s</span>" .
-                        "<span class=disasmloc>:%d</span>",
-                        HtmlEscape(CleanFileName($f)), $l);
-      } else {
-        # De-emphasize the entire location
-        $dis .= sprintf("<span class=unimportant>%s:%d</span>",
-                        HtmlEscape(CleanFileName($f)), $l);
-      }
-      $last_dis_filename = $f;
-      $last_dis_linenum = $l;
-      $running_disasm .= $dis;
-      $running_disasm .= "\n";
-    }
-
-    $running1 += $c1;
-    $running2 += $c2;
-    $total1 += $c1;
-    $total2 += $c2;
-    my $file = $e->[1];
-    my $line = $e->[2];
-    if (($file eq $filename) &&
-        ($line >= $firstline) &&
-        ($line <= $lastline)) {
-      # Assign all accumulated samples to this line
-      AddEntry($samples1, $line, $running1);
-      AddEntry($samples2, $line, $running2);
-      $running1 = 0;
-      $running2 = 0;
-      if ($html) {
-        if ($line != $last_touched_line && $disasm{$line} ne '') {
-          $disasm{$line} .= "\n";
-        }
-        $disasm{$line} .= $running_disasm;
-        $running_disasm = '';
-        $last_touched_line = $line;
-      }
-    }
-  }
-
-  # Assign any leftover samples to $lastline
-  AddEntry($samples1, $lastline, $running1);
-  AddEntry($samples2, $lastline, $running2);
-  if ($html) {
-    if ($lastline != $last_touched_line && $disasm{$lastline} ne '') {
-      $disasm{$lastline} .= "\n";
-    }
-    $disasm{$lastline} .= $running_disasm;
-  }
-
-  if ($html) {
-    printf $output (
-      "<h1>%s</h1>%s\n<pre onClick=\"jeprof_toggle_asm()\">\n" .
-      "Total:%6s %6s (flat / cumulative %s)\n",
-      HtmlEscape(ShortFunctionName($routine)),
-      HtmlEscape(CleanFileName($filename)),
-      Unparse($total1),
-      Unparse($total2),
-      Units());
-  } else {
-    printf $output (
-      "ROUTINE ====================== %s in %s\n" .
-      "%6s %6s Total %s (flat / cumulative)\n",
-      ShortFunctionName($routine),
-      CleanFileName($filename),
-      Unparse($total1),
-      Unparse($total2),
-      Units());
-  }
-  if (!open(FILE, "<$filename")) {
-    print STDERR "$filename: $!\n";
-    return 0;
-  }
-  my $l = 0;
-  while (<FILE>) {
-    s/\r//g;         # turn windows-looking lines into unix-looking lines
-    $l++;
-    if ($l >= $firstline - 5 &&
-        (($l <= $oldlastline + 5) || ($l <= $lastline))) {
-      chop;
-      my $text = $_;
-      if ($l == $firstline) { print $output $skip_marker; }
-      my $n1 = GetEntry($samples1, $l);
-      my $n2 = GetEntry($samples2, $l);
-      if ($html) {
-        # Emit a span that has one of the following classes:
-        #    livesrc -- has samples
-        #    deadsrc -- has disassembly, but with no samples
-        #    nop     -- has no matching disasembly
-        # Also emit an optional span containing disassembly.
-        my $dis = $disasm{$l};
-        my $asm = "";
-        if (defined($dis) && $dis ne '') {
-          $asm = "<span class=\"asm\">" . $dis . "</span>";
-        }
-        my $source_class = (($n1 + $n2 > 0)
-                            ? "livesrc"
-                            : (($asm ne "") ? "deadsrc" : "nop"));
-        printf $output (
-          "<span class=\"line\">%5d</span> " .
-          "<span class=\"%s\">%6s %6s %s</span>%s\n",
-          $l, $source_class,
-          HtmlPrintNumber($n1),
-          HtmlPrintNumber($n2),
-          HtmlEscape($text),
-          $asm);
-      } else {
-        printf $output(
-          "%6s %6s %4d: %s\n",
-          UnparseAlt($n1),
-          UnparseAlt($n2),
-          $l,
-          $text);
-      }
-      if ($l == $lastline)  { print $output $skip_marker; }
-    };
-  }
-  close(FILE);
-  if ($html) {
-    print $output "</pre>\n";
-  }
-  return 1;
-}
-
-# Return the source line for the specified file/linenumber.
-# Returns undef if not found.
-sub SourceLine {
-  my $file = shift;
-  my $line = shift;
-
-  # Look in cache
-  if (!defined($main::source_cache{$file})) {
-    if (100 < scalar keys(%main::source_cache)) {
-      # Clear the cache when it gets too big
-      $main::source_cache = ();
-    }
-
-    # Read all lines from the file
-    if (!open(FILE, "<$file")) {
-      print STDERR "$file: $!\n";
-      $main::source_cache{$file} = [];  # Cache the negative result
-      return undef;
-    }
-    my $lines = [];
-    push(@{$lines}, "");        # So we can use 1-based line numbers as indices
-    while (<FILE>) {
-      push(@{$lines}, $_);
-    }
-    close(FILE);
-
-    # Save the lines in the cache
-    $main::source_cache{$file} = $lines;
-  }
-
-  my $lines = $main::source_cache{$file};
-  if (($line < 0) || ($line > $#{$lines})) {
-    return undef;
-  } else {
-    return $lines->[$line];
-  }
-}
-
-# Print disassembly for one routine with interspersed source if available
-sub PrintDisassembledFunction {
-  my $prog = shift;
-  my $offset = shift;
-  my $routine = shift;
-  my $flat = shift;
-  my $cumulative = shift;
-  my $start_addr = shift;
-  my $end_addr = shift;
-  my $total = shift;
-
-  # Disassemble all instructions
-  my @instructions = Disassemble($prog, $offset, $start_addr, $end_addr);
-
-  # Make array of counts per instruction
-  my @flat_count = ();
-  my @cum_count = ();
-  my $flat_total = 0;
-  my $cum_total = 0;
-  foreach my $e (@instructions) {
-    # Add up counts for all address that fall inside this instruction
-    my $c1 = 0;
-    my $c2 = 0;
-    for (my $a = $e->[0]; $a lt $e->[4]; $a = AddressInc($a)) {
-      $c1 += GetEntry($flat, $a);
-      $c2 += GetEntry($cumulative, $a);
-    }
-    push(@flat_count, $c1);
-    push(@cum_count, $c2);
-    $flat_total += $c1;
-    $cum_total += $c2;
-  }
-
-  # Print header with total counts
-  printf("ROUTINE ====================== %s\n" .
-         "%6s %6s %s (flat, cumulative) %.1f%% of total\n",
-         ShortFunctionName($routine),
-         Unparse($flat_total),
-         Unparse($cum_total),
-         Units(),
-         ($cum_total * 100.0) / $total);
-
-  # Process instructions in order
-  my $current_file = "";
-  for (my $i = 0; $i <= $#instructions; ) {
-    my $e = $instructions[$i];
-
-    # Print the new file name whenever we switch files
-    if ($e->[1] ne $current_file) {
-      $current_file = $e->[1];
-      my $fname = $current_file;
-      $fname =~ s|^\./||;   # Trim leading "./"
-
-      # Shorten long file names
-      if (length($fname) >= 58) {
-        $fname = "..." . substr($fname, -55);
-      }
-      printf("-------------------- %s\n", $fname);
-    }
-
-    # TODO: Compute range of lines to print together to deal with
-    # small reorderings.
-    my $first_line = $e->[2];
-    my $last_line = $first_line;
-    my %flat_sum = ();
-    my %cum_sum = ();
-    for (my $l = $first_line; $l <= $last_line; $l++) {
-      $flat_sum{$l} = 0;
-      $cum_sum{$l} = 0;
-    }
-
-    # Find run of instructions for this range of source lines
-    my $first_inst = $i;
-    while (($i <= $#instructions) &&
-           ($instructions[$i]->[2] >= $first_line) &&
-           ($instructions[$i]->[2] <= $last_line)) {
-      $e = $instructions[$i];
-      $flat_sum{$e->[2]} += $flat_count[$i];
-      $cum_sum{$e->[2]} += $cum_count[$i];
-      $i++;
-    }
-    my $last_inst = $i - 1;
-
-    # Print source lines
-    for (my $l = $first_line; $l <= $last_line; $l++) {
-      my $line = SourceLine($current_file, $l);
-      if (!defined($line)) {
-        $line = "?\n";
-        next;
-      } else {
-        $line =~ s/^\s+//;
-      }
-      printf("%6s %6s %5d: %s",
-             UnparseAlt($flat_sum{$l}),
-             UnparseAlt($cum_sum{$l}),
-             $l,
-             $line);
-    }
-
-    # Print disassembly
-    for (my $x = $first_inst; $x <= $last_inst; $x++) {
-      my $e = $instructions[$x];
-      printf("%6s %6s    %8s: %6s\n",
-             UnparseAlt($flat_count[$x]),
-             UnparseAlt($cum_count[$x]),
-             UnparseAddress($offset, $e->[0]),
-             CleanDisassembly($e->[3]));
-    }
-  }
-}
-
-# Print DOT graph
-sub PrintDot {
-  my $prog = shift;
-  my $symbols = shift;
-  my $raw = shift;
-  my $flat = shift;
-  my $cumulative = shift;
-  my $overall_total = shift;
-
-  # Get total
-  my $local_total = TotalProfile($flat);
-  my $nodelimit = int($main::opt_nodefraction * $local_total);
-  my $edgelimit = int($main::opt_edgefraction * $local_total);
-  my $nodecount = $main::opt_nodecount;
-
-  # Find nodes to include
-  my @list = (sort { abs(GetEntry($cumulative, $b)) <=>
-                     abs(GetEntry($cumulative, $a))
-                     || $a cmp $b }
-              keys(%{$cumulative}));
-  my $last = $nodecount - 1;
-  if ($last > $#list) {
-    $last = $#list;
-  }
-  while (($last >= 0) &&
-         (abs(GetEntry($cumulative, $list[$last])) <= $nodelimit)) {
-    $last--;
-  }
-  if ($last < 0) {
-    print STDERR "No nodes to print\n";
-    return 0;
-  }
-
-  if ($nodelimit > 0 || $edgelimit > 0) {
-    printf STDERR ("Dropping nodes with <= %s %s; edges with <= %s abs(%s)\n",
-                   Unparse($nodelimit), Units(),
-                   Unparse($edgelimit), Units());
-  }
-
-  # Open DOT output file
-  my $output;
-  my $escaped_dot = ShellEscape(@DOT);
-  my $escaped_ps2pdf = ShellEscape(@PS2PDF);
-  if ($main::opt_gv) {
-    my $escaped_outfile = ShellEscape(TempName($main::next_tmpfile, "ps"));
-    $output = "| $escaped_dot -Tps2 >$escaped_outfile";
-  } elsif ($main::opt_evince) {
-    my $escaped_outfile = ShellEscape(TempName($main::next_tmpfile, "pdf"));
-    $output = "| $escaped_dot -Tps2 | $escaped_ps2pdf - $escaped_outfile";
-  } elsif ($main::opt_ps) {
-    $output = "| $escaped_dot -Tps2";
-  } elsif ($main::opt_pdf) {
-    $output = "| $escaped_dot -Tps2 | $escaped_ps2pdf - -";
-  } elsif ($main::opt_web || $main::opt_svg) {
-    # We need to post-process the SVG, so write to a temporary file always.
-    my $escaped_outfile = ShellEscape(TempName($main::next_tmpfile, "svg"));
-    $output = "| $escaped_dot -Tsvg >$escaped_outfile";
-  } elsif ($main::opt_gif) {
-    $output = "| $escaped_dot -Tgif";
-  } else {
-    $output = ">&STDOUT";
-  }
-  open(DOT, $output) || error("$output: $!\n");
-
-  # Title
-  printf DOT ("digraph \"%s; %s %s\" {\n",
-              $prog,
-              Unparse($overall_total),
-              Units());
-  if ($main::opt_pdf) {
-    # The output is more printable if we set the page size for dot.
-    printf DOT ("size=\"8,11\"\n");
-  }
-  printf DOT ("node [width=0.375,height=0.25];\n");
-
-  # Print legend
-  printf DOT ("Legend [shape=box,fontsize=24,shape=plaintext," .
-              "label=\"%s\\l%s\\l%s\\l%s\\l%s\\l\"];\n",
-              $prog,
-              sprintf("Total %s: %s", Units(), Unparse($overall_total)),
-              sprintf("Focusing on: %s", Unparse($local_total)),
-              sprintf("Dropped nodes with <= %s abs(%s)",
-                      Unparse($nodelimit), Units()),
-              sprintf("Dropped edges with <= %s %s",
-                      Unparse($edgelimit), Units())
-              );
-
-  # Print nodes
-  my %node = ();
-  my $nextnode = 1;
-  foreach my $a (@list[0..$last]) {
-    # Pick font size
-    my $f = GetEntry($flat, $a);
-    my $c = GetEntry($cumulative, $a);
-
-    my $fs = 8;
-    if ($local_total > 0) {
-      $fs = 8 + (50.0 * sqrt(abs($f * 1.0 / $local_total)));
-    }
-
-    $node{$a} = $nextnode++;
-    my $sym = $a;
-    $sym =~ s/\s+/\\n/g;
-    $sym =~ s/::/\\n/g;
-
-    # Extra cumulative info to print for non-leaves
-    my $extra = "";
-    if ($f != $c) {
-      $extra = sprintf("\\rof %s (%s)",
-                       Unparse($c),
-                       Percent($c, $local_total));
-    }
-    my $style = "";
-    if ($main::opt_heapcheck) {
-      if ($f > 0) {
-        # make leak-causing nodes more visible (add a background)
-        $style = ",style=filled,fillcolor=gray"
-      } elsif ($f < 0) {
-        # make anti-leak-causing nodes (which almost never occur)
-        # stand out as well (triple border)
-        $style = ",peripheries=3"
-      }
-    }
-
-    printf DOT ("N%d [label=\"%s\\n%s (%s)%s\\r" .
-                "\",shape=box,fontsize=%.1f%s];\n",
-                $node{$a},
-                $sym,
-                Unparse($f),
-                Percent($f, $local_total),
-                $extra,
-                $fs,
-                $style,
-               );
-  }
-
-  # Get edges and counts per edge
-  my %edge = ();
-  my $n;
-  my $fullname_to_shortname_map = {};
-  FillFullnameToShortnameMap($symbols, $fullname_to_shortname_map);
-  foreach my $k (keys(%{$raw})) {
-    # TODO: omit low %age edges
-    $n = $raw->{$k};
-    my @translated = TranslateStack($symbols, $fullname_to_shortname_map, $k);
-    for (my $i = 1; $i <= $#translated; $i++) {
-      my $src = $translated[$i];
-      my $dst = $translated[$i-1];
-      #next if ($src eq $dst);  # Avoid self-edges?
-      if (exists($node{$src}) && exists($node{$dst})) {
-        my $edge_label = "$src\001$dst";
-        if (!exists($edge{$edge_label})) {
-          $edge{$edge_label} = 0;
-        }
-        $edge{$edge_label} += $n;
-      }
-    }
-  }
-
-  # Print edges (process in order of decreasing counts)
-  my %indegree = ();   # Number of incoming edges added per node so far
-  my %outdegree = ();  # Number of outgoing edges added per node so far
-  foreach my $e (sort { $edge{$b} <=> $edge{$a} } keys(%edge)) {
-    my @x = split(/\001/, $e);
-    $n = $edge{$e};
-
-    # Initialize degree of kept incoming and outgoing edges if necessary
-    my $src = $x[0];
-    my $dst = $x[1];
-    if (!exists($outdegree{$src})) { $outdegree{$src} = 0; }
-    if (!exists($indegree{$dst})) { $indegree{$dst} = 0; }
-
-    my $keep;
-    if ($indegree{$dst} == 0) {
-      # Keep edge if needed for reachability
-      $keep = 1;
-    } elsif (abs($n) <= $edgelimit) {
-      # Drop if we are below --edgefraction
-      $keep = 0;
-    } elsif ($outdegree{$src} >= $main::opt_maxdegree ||
-             $indegree{$dst} >= $main::opt_maxdegree) {
-      # Keep limited number of in/out edges per node
-      $keep = 0;
-    } else {
-      $keep = 1;
-    }
-
-    if ($keep) {
-      $outdegree{$src}++;
-      $indegree{$dst}++;
-
-      # Compute line width based on edge count
-      my $fraction = abs($local_total ? (3 * ($n / $local_total)) : 0);
-      if ($fraction > 1) { $fraction = 1; }
-      my $w = $fraction * 2;
-      if ($w < 1 && ($main::opt_web || $main::opt_svg)) {
-        # SVG output treats line widths < 1 poorly.
-        $w = 1;
-      }
-
-      # Dot sometimes segfaults if given edge weights that are too large, so
-      # we cap the weights at a large value
-      my $edgeweight = abs($n) ** 0.7;
-      if ($edgeweight > 100000) { $edgeweight = 100000; }
-      $edgeweight = int($edgeweight);
-
-      my $style = sprintf("setlinewidth(%f)", $w);
-      if ($x[1] =~ m/\(inline\)/) {
-        $style .= ",dashed";
-      }
-
-      # Use a slightly squashed function of the edge count as the weight
-      printf DOT ("N%s -> N%s [label=%s, weight=%d, style=\"%s\"];\n",
-                  $node{$x[0]},
-                  $node{$x[1]},
-                  Unparse($n),
-                  $edgeweight,
-                  $style);
-    }
-  }
-
-  print DOT ("}\n");
-  close(DOT);
-
-  if ($main::opt_web || $main::opt_svg) {
-    # Rewrite SVG to be more usable inside web browser.
-    RewriteSvg(TempName($main::next_tmpfile, "svg"));
-  }
-
-  return 1;
-}
-
-sub RewriteSvg {
-  my $svgfile = shift;
-
-  open(SVG, $svgfile) || die "open temp svg: $!";
-  my @svg = <SVG>;
-  close(SVG);
-  unlink $svgfile;
-  my $svg = join('', @svg);
-
-  # Dot's SVG output is
-  #
-  #    <svg width="___" height="___"
-  #     viewBox="___" xmlns=...>
-  #    <g id="graph0" transform="...">
-  #    ...
-  #    </g>
-  #    </svg>
-  #
-  # Change it to
-  #
-  #    <svg width="100%" height="100%"
-  #     xmlns=...>
-  #    $svg_javascript
-  #    <g id="viewport" transform="translate(0,0)">
-  #    <g id="graph0" transform="...">
-  #    ...
-  #    </g>
-  #    </g>
-  #    </svg>
-
-  # Fix width, height; drop viewBox.
-  $svg =~ s/(?s)<svg width="[^"]+" height="[^"]+"(.*?)viewBox="[^"]+"/<svg width="100%" height="100%"$1/;
-
-  # Insert script, viewport <g> above first <g>
-  my $svg_javascript = SvgJavascript();
-  my $viewport = "<g id=\"viewport\" transform=\"translate(0,0)\">\n";
-  $svg =~ s/<g id="graph\d"/$svg_javascript$viewport$&/;
-
-  # Insert final </g> above </svg>.
-  $svg =~ s/(.*)(<\/svg>)/$1<\/g>$2/;
-  $svg =~ s/<g id="graph\d"(.*?)/<g id="viewport"$1/;
-
-  if ($main::opt_svg) {
-    # --svg: write to standard output.
-    print $svg;
-  } else {
-    # Write back to temporary file.
-    open(SVG, ">$svgfile") || die "open $svgfile: $!";
-    print SVG $svg;
-    close(SVG);
-  }
-}
-
-sub SvgJavascript {
-  return <<'EOF';
-<script type="text/ecmascript"><![CDATA[
-// SVGPan
-// http://www.cyberz.org/blog/2009/12/08/svgpan-a-javascript-svg-panzoomdrag-library/
-// Local modification: if(true || ...) below to force panning, never moving.
-
-/**
- *  SVGPan library 1.2
- * ====================
- *
- * Given an unique existing element with id "viewport", including the
- * the library into any SVG adds the following capabilities:
- *
- *  - Mouse panning
- *  - Mouse zooming (using the wheel)
- *  - Object dargging
- *
- * Known issues:
- *
- *  - Zooming (while panning) on Safari has still some issues
- *
- * Releases:
- *
- * 1.2, Sat Mar 20 08:42:50 GMT 2010, Zeng Xiaohui
- *	Fixed a bug with browser mouse handler interaction
- *
- * 1.1, Wed Feb  3 17:39:33 GMT 2010, Zeng Xiaohui
- *	Updated the zoom code to support the mouse wheel on Safari/Chrome
- *
- * 1.0, Andrea Leofreddi
- *	First release
- *
- * This code is licensed under the following BSD license:
- *
- * Copyright 2009-2010 Andrea Leofreddi <a.leofreddi@itcharm.com>. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modification, are
- * permitted provided that the following conditions are met:
- *
- *    1. Redistributions of source code must retain the above copyright notice, this list of
- *       conditions and the following disclaimer.
- *
- *    2. Redistributions in binary form must reproduce the above copyright notice, this list
- *       of conditions and the following disclaimer in the documentation and/or other materials
- *       provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY Andrea Leofreddi ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
- * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL Andrea Leofreddi OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * The views and conclusions contained in the software and documentation are those of the
- * authors and should not be interpreted as representing official policies, either expressed
- * or implied, of Andrea Leofreddi.
- */
-
-var root = document.documentElement;
-
-var state = 'none', stateTarget, stateOrigin, stateTf;
-
-setupHandlers(root);
-
-/**
- * Register handlers
- */
-function setupHandlers(root){
-	setAttributes(root, {
-		"onmouseup" : "add(evt)",
-		"onmousedown" : "handleMouseDown(evt)",
-		"onmousemove" : "handleMouseMove(evt)",
-		"onmouseup" : "handleMouseUp(evt)",
-		//"onmouseout" : "handleMouseUp(evt)", // Decomment this to stop the pan functionality when dragging out of the SVG element
-	});
-
-	if(navigator.userAgent.toLowerCase().indexOf('webkit') >= 0)
-		window.addEventListener('mousewheel', handleMouseWheel, false); // Chrome/Safari
-	else
-		window.addEventListener('DOMMouseScroll', handleMouseWheel, false); // Others
-
-	var g = svgDoc.getElementById("svg");
-	g.width = "100%";
-	g.height = "100%";
-}
-
-/**
- * Instance an SVGPoint object with given event coordinates.
- */
-function getEventPoint(evt) {
-	var p = root.createSVGPoint();
-
-	p.x = evt.clientX;
-	p.y = evt.clientY;
-
-	return p;
-}
-
-/**
- * Sets the current transform matrix of an element.
- */
-function setCTM(element, matrix) {
-	var s = "matrix(" + matrix.a + "," + matrix.b + "," + matrix.c + "," + matrix.d + "," + matrix.e + "," + matrix.f + ")";
-
-	element.setAttribute("transform", s);
-}
-
-/**
- * Dumps a matrix to a string (useful for debug).
- */
-function dumpMatrix(matrix) {
-	var s = "[ " + matrix.a + ", " + matrix.c + ", " + matrix.e + "\n  " + matrix.b + ", " + matrix.d + ", " + matrix.f + "\n  0, 0, 1 ]";
-
-	return s;
-}
-
-/**
- * Sets attributes of an element.
- */
-function setAttributes(element, attributes){
-	for (i in attributes)
-		element.setAttributeNS(null, i, attributes[i]);
-}
-
-/**
- * Handle mouse move event.
- */
-function handleMouseWheel(evt) {
-	if(evt.preventDefault)
-		evt.preventDefault();
-
-	evt.returnValue = false;
-
-	var svgDoc = evt.target.ownerDocument;
-
-	var delta;
-
-	if(evt.wheelDelta)
-		delta = evt.wheelDelta / 3600; // Chrome/Safari
-	else
-		delta = evt.detail / -90; // Mozilla
-
-	var z = 1 + delta; // Zoom factor: 0.9/1.1
-
-	var g = svgDoc.getElementById("viewport");
-
-	var p = getEventPoint(evt);
-
-	p = p.matrixTransform(g.getCTM().inverse());
-
-	// Compute new scale matrix in current mouse position
-	var k = root.createSVGMatrix().translate(p.x, p.y).scale(z).translate(-p.x, -p.y);
-
-        setCTM(g, g.getCTM().multiply(k));
-
-	stateTf = stateTf.multiply(k.inverse());
-}
-
-/**
- * Handle mouse move event.
- */
-function handleMouseMove(evt) {
-	if(evt.preventDefault)
-		evt.preventDefault();
-
-	evt.returnValue = false;
-
-	var svgDoc = evt.target.ownerDocument;
-
-	var g = svgDoc.getElementById("viewport");
-
-	if(state == 'pan') {
-		// Pan mode
-		var p = getEventPoint(evt).matrixTransform(stateTf);
-
-		setCTM(g, stateTf.inverse().translate(p.x - stateOrigin.x, p.y - stateOrigin.y));
-	} else if(state == 'move') {
-		// Move mode
-		var p = getEventPoint(evt).matrixTransform(g.getCTM().inverse());
-
-		setCTM(stateTarget, root.createSVGMatrix().translate(p.x - stateOrigin.x, p.y - stateOrigin.y).multiply(g.getCTM().inverse()).multiply(stateTarget.getCTM()));
-
-		stateOrigin = p;
-	}
-}
-
-/**
- * Handle click event.
- */
-function handleMouseDown(evt) {
-	if(evt.preventDefault)
-		evt.preventDefault();
-
-	evt.returnValue = false;
-
-	var svgDoc = evt.target.ownerDocument;
-
-	var g = svgDoc.getElementById("viewport");
-
-	if(true || evt.target.tagName == "svg") {
-		// Pan mode
-		state = 'pan';
-
-		stateTf = g.getCTM().inverse();
-
-		stateOrigin = getEventPoint(evt).matrixTransform(stateTf);
-	} else {
-		// Move mode
-		state = 'move';
-
-		stateTarget = evt.target;
-
-		stateTf = g.getCTM().inverse();
-
-		stateOrigin = getEventPoint(evt).matrixTransform(stateTf);
-	}
-}
-
-/**
- * Handle mouse button release event.
- */
-function handleMouseUp(evt) {
-	if(evt.preventDefault)
-		evt.preventDefault();
-
-	evt.returnValue = false;
-
-	var svgDoc = evt.target.ownerDocument;
-
-	if(state == 'pan' || state == 'move') {
-		// Quit pan mode
-		state = '';
-	}
-}
-
-]]></script>
-EOF
-}
-
-# Provides a map from fullname to shortname for cases where the
-# shortname is ambiguous.  The symlist has both the fullname and
-# shortname for all symbols, which is usually fine, but sometimes --
-# such as overloaded functions -- two different fullnames can map to
-# the same shortname.  In that case, we use the address of the
-# function to disambiguate the two.  This function fills in a map that
-# maps fullnames to modified shortnames in such cases.  If a fullname
-# is not present in the map, the 'normal' shortname provided by the
-# symlist is the appropriate one to use.
-sub FillFullnameToShortnameMap {
-  my $symbols = shift;
-  my $fullname_to_shortname_map = shift;
-  my $shortnames_seen_once = {};
-  my $shortnames_seen_more_than_once = {};
-
-  foreach my $symlist (values(%{$symbols})) {
-    # TODO(csilvers): deal with inlined symbols too.
-    my $shortname = $symlist->[0];
-    my $fullname = $symlist->[2];
-    if ($fullname !~ /<[0-9a-fA-F]+>$/) {  # fullname doesn't end in an address
-      next;       # the only collisions we care about are when addresses differ
-    }
-    if (defined($shortnames_seen_once->{$shortname}) &&
-        $shortnames_seen_once->{$shortname} ne $fullname) {
-      $shortnames_seen_more_than_once->{$shortname} = 1;
-    } else {
-      $shortnames_seen_once->{$shortname} = $fullname;
-    }
-  }
-
-  foreach my $symlist (values(%{$symbols})) {
-    my $shortname = $symlist->[0];
-    my $fullname = $symlist->[2];
-    # TODO(csilvers): take in a list of addresses we care about, and only
-    # store in the map if $symlist->[1] is in that list.  Saves space.
-    next if defined($fullname_to_shortname_map->{$fullname});
-    if (defined($shortnames_seen_more_than_once->{$shortname})) {
-      if ($fullname =~ /<0*([^>]*)>$/) {   # fullname has address at end of it
-        $fullname_to_shortname_map->{$fullname} = "$shortname\@$1";
-      }
-    }
-  }
-}
-
-# Return a small number that identifies the argument.
-# Multiple calls with the same argument will return the same number.
-# Calls with different arguments will return different numbers.
-sub ShortIdFor {
-  my $key = shift;
-  my $id = $main::uniqueid{$key};
-  if (!defined($id)) {
-    $id = keys(%main::uniqueid) + 1;
-    $main::uniqueid{$key} = $id;
-  }
-  return $id;
-}
-
-# Translate a stack of addresses into a stack of symbols
-sub TranslateStack {
-  my $symbols = shift;
-  my $fullname_to_shortname_map = shift;
-  my $k = shift;
-
-  my @addrs = split(/\n/, $k);
-  my @result = ();
-  for (my $i = 0; $i <= $#addrs; $i++) {
-    my $a = $addrs[$i];
-
-    # Skip large addresses since they sometimes show up as fake entries on RH9
-    if (length($a) > 8 && $a gt "7fffffffffffffff") {
-      next;
-    }
-
-    if ($main::opt_disasm || $main::opt_list) {
-      # We want just the address for the key
-      push(@result, $a);
-      next;
-    }
-
-    my $symlist = $symbols->{$a};
-    if (!defined($symlist)) {
-      $symlist = [$a, "", $a];
-    }
-
-    # We can have a sequence of symbols for a particular entry
-    # (more than one symbol in the case of inlining).  Callers
-    # come before callees in symlist, so walk backwards since
-    # the translated stack should contain callees before callers.
-    for (my $j = $#{$symlist}; $j >= 2; $j -= 3) {
-      my $func = $symlist->[$j-2];
-      my $fileline = $symlist->[$j-1];
-      my $fullfunc = $symlist->[$j];
-      if (defined($fullname_to_shortname_map->{$fullfunc})) {
-        $func = $fullname_to_shortname_map->{$fullfunc};
-      }
-      if ($j > 2) {
-        $func = "$func (inline)";
-      }
-
-      # Do not merge nodes corresponding to Callback::Run since that
-      # causes confusing cycles in dot display.  Instead, we synthesize
-      # a unique name for this frame per caller.
-      if ($func =~ m/Callback.*::Run$/) {
-        my $caller = ($i > 0) ? $addrs[$i-1] : 0;
-        $func = "Run#" . ShortIdFor($caller);
-      }
-
-      if ($main::opt_addresses) {
-        push(@result, "$a $func $fileline");
-      } elsif ($main::opt_lines) {
-        if ($func eq '??' && $fileline eq '??:0') {
-          push(@result, "$a");
-        } else {
-          push(@result, "$func $fileline");
-        }
-      } elsif ($main::opt_functions) {
-        if ($func eq '??') {
-          push(@result, "$a");
-        } else {
-          push(@result, $func);
-        }
-      } elsif ($main::opt_files) {
-        if ($fileline eq '??:0' || $fileline eq '') {
-          push(@result, "$a");
-        } else {
-          my $f = $fileline;
-          $f =~ s/:\d+$//;
-          push(@result, $f);
-        }
-      } else {
-        push(@result, $a);
-        last;  # Do not print inlined info
-      }
-    }
-  }
-
-  # print join(",", @addrs), " => ", join(",", @result), "\n";
-  return @result;
-}
-
-# Generate percent string for a number and a total
-sub Percent {
-  my $num = shift;
-  my $tot = shift;
-  if ($tot != 0) {
-    return sprintf("%.1f%%", $num * 100.0 / $tot);
-  } else {
-    return ($num == 0) ? "nan" : (($num > 0) ? "+inf" : "-inf");
-  }
-}
-
-# Generate pretty-printed form of number
-sub Unparse {
-  my $num = shift;
-  if ($main::profile_type eq 'heap' || $main::profile_type eq 'growth') {
-    if ($main::opt_inuse_objects || $main::opt_alloc_objects) {
-      return sprintf("%d", $num);
-    } else {
-      if ($main::opt_show_bytes) {
-        return sprintf("%d", $num);
-      } else {
-        return sprintf("%.1f", $num / 1048576.0);
-      }
-    }
-  } elsif ($main::profile_type eq 'contention' && !$main::opt_contentions) {
-    return sprintf("%.3f", $num / 1e9); # Convert nanoseconds to seconds
-  } else {
-    return sprintf("%d", $num);
-  }
-}
-
-# Alternate pretty-printed form: 0 maps to "."
-sub UnparseAlt {
-  my $num = shift;
-  if ($num == 0) {
-    return ".";
-  } else {
-    return Unparse($num);
-  }
-}
-
-# Alternate pretty-printed form: 0 maps to ""
-sub HtmlPrintNumber {
-  my $num = shift;
-  if ($num == 0) {
-    return "";
-  } else {
-    return Unparse($num);
-  }
-}
-
-# Return output units
-sub Units {
-  if ($main::profile_type eq 'heap' || $main::profile_type eq 'growth') {
-    if ($main::opt_inuse_objects || $main::opt_alloc_objects) {
-      return "objects";
-    } else {
-      if ($main::opt_show_bytes) {
-        return "B";
-      } else {
-        return "MB";
-      }
-    }
-  } elsif ($main::profile_type eq 'contention' && !$main::opt_contentions) {
-    return "seconds";
-  } else {
-    return "samples";
-  }
-}
-
-##### Profile manipulation code #####
-
-# Generate flattened profile:
-# If count is charged to stack [a,b,c,d], in generated profile,
-# it will be charged to [a]
-sub FlatProfile {
-  my $profile = shift;
-  my $result = {};
-  foreach my $k (keys(%{$profile})) {
-    my $count = $profile->{$k};
-    my @addrs = split(/\n/, $k);
-    if ($#addrs >= 0) {
-      AddEntry($result, $addrs[0], $count);
-    }
-  }
-  return $result;
-}
-
-# Generate cumulative profile:
-# If count is charged to stack [a,b,c,d], in generated profile,
-# it will be charged to [a], [b], [c], [d]
-sub CumulativeProfile {
-  my $profile = shift;
-  my $result = {};
-  foreach my $k (keys(%{$profile})) {
-    my $count = $profile->{$k};
-    my @addrs = split(/\n/, $k);
-    foreach my $a (@addrs) {
-      AddEntry($result, $a, $count);
-    }
-  }
-  return $result;
-}
-
-# If the second-youngest PC on the stack is always the same, returns
-# that pc.  Otherwise, returns undef.
-sub IsSecondPcAlwaysTheSame {
-  my $profile = shift;
-
-  my $second_pc = undef;
-  foreach my $k (keys(%{$profile})) {
-    my @addrs = split(/\n/, $k);
-    if ($#addrs < 1) {
-      return undef;
-    }
-    if (not defined $second_pc) {
-      $second_pc = $addrs[1];
-    } else {
-      if ($second_pc ne $addrs[1]) {
-        return undef;
-      }
-    }
-  }
-  return $second_pc;
-}
-
-sub ExtractSymbolLocation {
-  my $symbols = shift;
-  my $address = shift;
-  # 'addr2line' outputs "??:0" for unknown locations; we do the
-  # same to be consistent.
-  my $location = "??:0:unknown";
-  if (exists $symbols->{$address}) {
-    my $file = $symbols->{$address}->[1];
-    if ($file eq "?") {
-      $file = "??:0"
-    }
-    $location = $file . ":" . $symbols->{$address}->[0];
-  }
-  return $location;
-}
-
-# Extracts a graph of calls.
-sub ExtractCalls {
-  my $symbols = shift;
-  my $profile = shift;
-
-  my $calls = {};
-  while( my ($stack_trace, $count) = each %$profile ) {
-    my @address = split(/\n/, $stack_trace);
-    my $destination = ExtractSymbolLocation($symbols, $address[0]);
-    AddEntry($calls, $destination, $count);
-    for (my $i = 1; $i <= $#address; $i++) {
-      my $source = ExtractSymbolLocation($symbols, $address[$i]);
-      my $call = "$source -> $destination";
-      AddEntry($calls, $call, $count);
-      $destination = $source;
-    }
-  }
-
-  return $calls;
-}
-
-sub FilterFrames {
-  my $symbols = shift;
-  my $profile = shift;
-
-  if ($main::opt_retain eq '' && $main::opt_exclude eq '') {
-    return $profile;
-  }
-
-  my $result = {};
-  foreach my $k (keys(%{$profile})) {
-    my $count = $profile->{$k};
-    my @addrs = split(/\n/, $k);
-    my @path = ();
-    foreach my $a (@addrs) {
-      my $sym;
-      if (exists($symbols->{$a})) {
-        $sym = $symbols->{$a}->[0];
-      } else {
-        $sym = $a;
-      }
-      if ($main::opt_retain ne '' && $sym !~ m/$main::opt_retain/) {
-        next;
-      }
-      if ($main::opt_exclude ne '' && $sym =~ m/$main::opt_exclude/) {
-        next;
-      }
-      push(@path, $a);
-    }
-    if (scalar(@path) > 0) {
-      my $reduced_path = join("\n", @path);
-      AddEntry($result, $reduced_path, $count);
-    }
-  }
-
-  return $result;
-}
-
-sub RemoveUninterestingFrames {
-  my $symbols = shift;
-  my $profile = shift;
-
-  # List of function names to skip
-  my %skip = ();
-  my $skip_regexp = 'NOMATCH';
-  if ($main::profile_type eq 'heap' || $main::profile_type eq 'growth') {
-    foreach my $name ('calloc',
-                      'cfree',
-                      'malloc',
-                      'free',
-                      'memalign',
-                      'posix_memalign',
-                      'aligned_alloc',
-                      'pvalloc',
-                      'valloc',
-                      'realloc',
-                      'mallocx', # jemalloc
-                      'rallocx', # jemalloc
-                      'xallocx', # jemalloc
-                      'dallocx', # jemalloc
-                      'sdallocx', # jemalloc
-                      'tc_calloc',
-                      'tc_cfree',
-                      'tc_malloc',
-                      'tc_free',
-                      'tc_memalign',
-                      'tc_posix_memalign',
-                      'tc_pvalloc',
-                      'tc_valloc',
-                      'tc_realloc',
-                      'tc_new',
-                      'tc_delete',
-                      'tc_newarray',
-                      'tc_deletearray',
-                      'tc_new_nothrow',
-                      'tc_newarray_nothrow',
-                      'do_malloc',
-                      '::do_malloc',   # new name -- got moved to an unnamed ns
-                      '::do_malloc_or_cpp_alloc',
-                      'DoSampledAllocation',
-                      'simple_alloc::allocate',
-                      '__malloc_alloc_template::allocate',
-                      '__builtin_delete',
-                      '__builtin_new',
-                      '__builtin_vec_delete',
-                      '__builtin_vec_new',
-                      'operator new',
-                      'operator new[]',
-                      # The entry to our memory-allocation routines on OS X
-                      'malloc_zone_malloc',
-                      'malloc_zone_calloc',
-                      'malloc_zone_valloc',
-                      'malloc_zone_realloc',
-                      'malloc_zone_memalign',
-                      'malloc_zone_free',
-                      # These mark the beginning/end of our custom sections
-                      '__start_google_malloc',
-                      '__stop_google_malloc',
-                      '__start_malloc_hook',
-                      '__stop_malloc_hook') {
-      $skip{$name} = 1;
-      $skip{"_" . $name} = 1;   # Mach (OS X) adds a _ prefix to everything
-    }
-    # TODO: Remove TCMalloc once everything has been
-    # moved into the tcmalloc:: namespace and we have flushed
-    # old code out of the system.
-    $skip_regexp = "TCMalloc|^tcmalloc::";
-  } elsif ($main::profile_type eq 'contention') {
-    foreach my $vname ('base::RecordLockProfileData',
-                       'base::SubmitMutexProfileData',
-                       'base::SubmitSpinLockProfileData',
-                       'Mutex::Unlock',
-                       'Mutex::UnlockSlow',
-                       'Mutex::ReaderUnlock',
-                       'MutexLock::~MutexLock',
-                       'SpinLock::Unlock',
-                       'SpinLock::SlowUnlock',
-                       'SpinLockHolder::~SpinLockHolder') {
-      $skip{$vname} = 1;
-    }
-  } elsif ($main::profile_type eq 'cpu') {
-    # Drop signal handlers used for CPU profile collection
-    # TODO(dpeng): this should not be necessary; it's taken
-    # care of by the general 2nd-pc mechanism below.
-    foreach my $name ('ProfileData::Add',           # historical
-                      'ProfileData::prof_handler',  # historical
-                      'CpuProfiler::prof_handler',
-                      '__FRAME_END__',
-                      '__pthread_sighandler',
-                      '__restore') {
-      $skip{$name} = 1;
-    }
-  } else {
-    # Nothing skipped for unknown types
-  }
-
-  if ($main::profile_type eq 'cpu') {
-    # If all the second-youngest program counters are the same,
-    # this STRONGLY suggests that it is an artifact of measurement,
-    # i.e., stack frames pushed by the CPU profiler signal handler.
-    # Hence, we delete them.
-    # (The topmost PC is read from the signal structure, not from
-    # the stack, so it does not get involved.)
-    while (my $second_pc = IsSecondPcAlwaysTheSame($profile)) {
-      my $result = {};
-      my $func = '';
-      if (exists($symbols->{$second_pc})) {
-        $second_pc = $symbols->{$second_pc}->[0];
-      }
-      print STDERR "Removing $second_pc from all stack traces.\n";
-      foreach my $k (keys(%{$profile})) {
-        my $count = $profile->{$k};
-        my @addrs = split(/\n/, $k);
-        splice @addrs, 1, 1;
-        my $reduced_path = join("\n", @addrs);
-        AddEntry($result, $reduced_path, $count);
-      }
-      $profile = $result;
-    }
-  }
-
-  my $result = {};
-  foreach my $k (keys(%{$profile})) {
-    my $count = $profile->{$k};
-    my @addrs = split(/\n/, $k);
-    my @path = ();
-    foreach my $a (@addrs) {
-      if (exists($symbols->{$a})) {
-        my $func = $symbols->{$a}->[0];
-        if ($skip{$func} || ($func =~ m/$skip_regexp/)) {
-          # Throw away the portion of the backtrace seen so far, under the
-          # assumption that previous frames were for functions internal to the
-          # allocator.
-          @path = ();
-          next;
-        }
-      }
-      push(@path, $a);
-    }
-    my $reduced_path = join("\n", @path);
-    AddEntry($result, $reduced_path, $count);
-  }
-
-  $result = FilterFrames($symbols, $result);
-
-  return $result;
-}
-
-# Reduce profile to granularity given by user
-sub ReduceProfile {
-  my $symbols = shift;
-  my $profile = shift;
-  my $result = {};
-  my $fullname_to_shortname_map = {};
-  FillFullnameToShortnameMap($symbols, $fullname_to_shortname_map);
-  foreach my $k (keys(%{$profile})) {
-    my $count = $profile->{$k};
-    my @translated = TranslateStack($symbols, $fullname_to_shortname_map, $k);
-    my @path = ();
-    my %seen = ();
-    $seen{''} = 1;      # So that empty keys are skipped
-    foreach my $e (@translated) {
-      # To avoid double-counting due to recursion, skip a stack-trace
-      # entry if it has already been seen
-      if (!$seen{$e}) {
-        $seen{$e} = 1;
-        push(@path, $e);
-      }
-    }
-    my $reduced_path = join("\n", @path);
-    AddEntry($result, $reduced_path, $count);
-  }
-  return $result;
-}
-
-# Does the specified symbol array match the regexp?
-sub SymbolMatches {
-  my $sym = shift;
-  my $re = shift;
-  if (defined($sym)) {
-    for (my $i = 0; $i < $#{$sym}; $i += 3) {
-      if ($sym->[$i] =~ m/$re/ || $sym->[$i+1] =~ m/$re/) {
-        return 1;
-      }
-    }
-  }
-  return 0;
-}
-
-# Focus only on paths involving specified regexps
-sub FocusProfile {
-  my $symbols = shift;
-  my $profile = shift;
-  my $focus = shift;
-  my $result = {};
-  foreach my $k (keys(%{$profile})) {
-    my $count = $profile->{$k};
-    my @addrs = split(/\n/, $k);
-    foreach my $a (@addrs) {
-      # Reply if it matches either the address/shortname/fileline
-      if (($a =~ m/$focus/) || SymbolMatches($symbols->{$a}, $focus)) {
-        AddEntry($result, $k, $count);
-        last;
-      }
-    }
-  }
-  return $result;
-}
-
-# Focus only on paths not involving specified regexps
-sub IgnoreProfile {
-  my $symbols = shift;
-  my $profile = shift;
-  my $ignore = shift;
-  my $result = {};
-  foreach my $k (keys(%{$profile})) {
-    my $count = $profile->{$k};
-    my @addrs = split(/\n/, $k);
-    my $matched = 0;
-    foreach my $a (@addrs) {
-      # Reply if it matches either the address/shortname/fileline
-      if (($a =~ m/$ignore/) || SymbolMatches($symbols->{$a}, $ignore)) {
-        $matched = 1;
-        last;
-      }
-    }
-    if (!$matched) {
-      AddEntry($result, $k, $count);
-    }
-  }
-  return $result;
-}
-
-# Get total count in profile
-sub TotalProfile {
-  my $profile = shift;
-  my $result = 0;
-  foreach my $k (keys(%{$profile})) {
-    $result += $profile->{$k};
-  }
-  return $result;
-}
-
-# Add A to B
-sub AddProfile {
-  my $A = shift;
-  my $B = shift;
-
-  my $R = {};
-  # add all keys in A
-  foreach my $k (keys(%{$A})) {
-    my $v = $A->{$k};
-    AddEntry($R, $k, $v);
-  }
-  # add all keys in B
-  foreach my $k (keys(%{$B})) {
-    my $v = $B->{$k};
-    AddEntry($R, $k, $v);
-  }
-  return $R;
-}
-
-# Merges symbol maps
-sub MergeSymbols {
-  my $A = shift;
-  my $B = shift;
-
-  my $R = {};
-  foreach my $k (keys(%{$A})) {
-    $R->{$k} = $A->{$k};
-  }
-  if (defined($B)) {
-    foreach my $k (keys(%{$B})) {
-      $R->{$k} = $B->{$k};
-    }
-  }
-  return $R;
-}
-
-
-# Add A to B
-sub AddPcs {
-  my $A = shift;
-  my $B = shift;
-
-  my $R = {};
-  # add all keys in A
-  foreach my $k (keys(%{$A})) {
-    $R->{$k} = 1
-  }
-  # add all keys in B
-  foreach my $k (keys(%{$B})) {
-    $R->{$k} = 1
-  }
-  return $R;
-}
-
-# Subtract B from A
-sub SubtractProfile {
-  my $A = shift;
-  my $B = shift;
-
-  my $R = {};
-  foreach my $k (keys(%{$A})) {
-    my $v = $A->{$k} - GetEntry($B, $k);
-    if ($v < 0 && $main::opt_drop_negative) {
-      $v = 0;
-    }
-    AddEntry($R, $k, $v);
-  }
-  if (!$main::opt_drop_negative) {
-    # Take care of when subtracted profile has more entries
-    foreach my $k (keys(%{$B})) {
-      if (!exists($A->{$k})) {
-        AddEntry($R, $k, 0 - $B->{$k});
-      }
-    }
-  }
-  return $R;
-}
-
-# Get entry from profile; zero if not present
-sub GetEntry {
-  my $profile = shift;
-  my $k = shift;
-  if (exists($profile->{$k})) {
-    return $profile->{$k};
-  } else {
-    return 0;
-  }
-}
-
-# Add entry to specified profile
-sub AddEntry {
-  my $profile = shift;
-  my $k = shift;
-  my $n = shift;
-  if (!exists($profile->{$k})) {
-    $profile->{$k} = 0;
-  }
-  $profile->{$k} += $n;
-}
-
-# Add a stack of entries to specified profile, and add them to the $pcs
-# list.
-sub AddEntries {
-  my $profile = shift;
-  my $pcs = shift;
-  my $stack = shift;
-  my $count = shift;
-  my @k = ();
-
-  foreach my $e (split(/\s+/, $stack)) {
-    my $pc = HexExtend($e);
-    $pcs->{$pc} = 1;
-    push @k, $pc;
-  }
-  AddEntry($profile, (join "\n", @k), $count);
-}
-
-##### Code to profile a server dynamically #####
-
-sub CheckSymbolPage {
-  my $url = SymbolPageURL();
-  my $command = ShellEscape(@URL_FETCHER, $url);
-  open(SYMBOL, "$command |") or error($command);
-  my $line = <SYMBOL>;
-  $line =~ s/\r//g;         # turn windows-looking lines into unix-looking lines
-  close(SYMBOL);
-  unless (defined($line)) {
-    error("$url doesn't exist\n");
-  }
-
-  if ($line =~ /^num_symbols:\s+(\d+)$/) {
-    if ($1 == 0) {
-      error("Stripped binary. No symbols available.\n");
-    }
-  } else {
-    error("Failed to get the number of symbols from $url\n");
-  }
-}
-
-sub IsProfileURL {
-  my $profile_name = shift;
-  if (-f $profile_name) {
-    printf STDERR "Using local file $profile_name.\n";
-    return 0;
-  }
-  return 1;
-}
-
-sub ParseProfileURL {
-  my $profile_name = shift;
-
-  if (!defined($profile_name) || $profile_name eq "") {
-    return ();
-  }
-
-  # Split profile URL - matches all non-empty strings, so no test.
-  $profile_name =~ m,^(https?://)?([^/]+)(.*?)(/|$PROFILES)?$,;
-
-  my $proto = $1 || "http://";
-  my $hostport = $2;
-  my $prefix = $3;
-  my $profile = $4 || "/";
-
-  my $host = $hostport;
-  $host =~ s/:.*//;
-
-  my $baseurl = "$proto$hostport$prefix";
-  return ($host, $baseurl, $profile);
-}
-
-# We fetch symbols from the first profile argument.
-sub SymbolPageURL {
-  my ($host, $baseURL, $path) = ParseProfileURL($main::pfile_args[0]);
-  return "$baseURL$SYMBOL_PAGE";
-}
-
-sub FetchProgramName() {
-  my ($host, $baseURL, $path) = ParseProfileURL($main::pfile_args[0]);
-  my $url = "$baseURL$PROGRAM_NAME_PAGE";
-  my $command_line = ShellEscape(@URL_FETCHER, $url);
-  open(CMDLINE, "$command_line |") or error($command_line);
-  my $cmdline = <CMDLINE>;
-  $cmdline =~ s/\r//g;   # turn windows-looking lines into unix-looking lines
-  close(CMDLINE);
-  error("Failed to get program name from $url\n") unless defined($cmdline);
-  $cmdline =~ s/\x00.+//;  # Remove argv[1] and latters.
-  $cmdline =~ s!\n!!g;  # Remove LFs.
-  return $cmdline;
-}
-
-# Gee, curl's -L (--location) option isn't reliable at least
-# with its 7.12.3 version.  Curl will forget to post data if
-# there is a redirection.  This function is a workaround for
-# curl.  Redirection happens on borg hosts.
-sub ResolveRedirectionForCurl {
-  my $url = shift;
-  my $command_line = ShellEscape(@URL_FETCHER, "--head", $url);
-  open(CMDLINE, "$command_line |") or error($command_line);
-  while (<CMDLINE>) {
-    s/\r//g;         # turn windows-looking lines into unix-looking lines
-    if (/^Location: (.*)/) {
-      $url = $1;
-    }
-  }
-  close(CMDLINE);
-  return $url;
-}
-
-# Add a timeout flat to URL_FETCHER.  Returns a new list.
-sub AddFetchTimeout {
-  my $timeout = shift;
-  my @fetcher = @_;
-  if (defined($timeout)) {
-    if (join(" ", @fetcher) =~ m/\bcurl -s/) {
-      push(@fetcher, "--max-time", sprintf("%d", $timeout));
-    } elsif (join(" ", @fetcher) =~ m/\brpcget\b/) {
-      push(@fetcher, sprintf("--deadline=%d", $timeout));
-    }
-  }
-  return @fetcher;
-}
-
-# Reads a symbol map from the file handle name given as $1, returning
-# the resulting symbol map.  Also processes variables relating to symbols.
-# Currently, the only variable processed is 'binary=<value>' which updates
-# $main::prog to have the correct program name.
-sub ReadSymbols {
-  my $in = shift;
-  my $map = {};
-  while (<$in>) {
-    s/\r//g;         # turn windows-looking lines into unix-looking lines
-    # Removes all the leading zeroes from the symbols, see comment below.
-    if (m/^0x0*([0-9a-f]+)\s+(.+)/) {
-      $map->{$1} = $2;
-    } elsif (m/^---/) {
-      last;
-    } elsif (m/^([a-z][^=]*)=(.*)$/ ) {
-      my ($variable, $value) = ($1, $2);
-      for ($variable, $value) {
-        s/^\s+//;
-        s/\s+$//;
-      }
-      if ($variable eq "binary") {
-        if ($main::prog ne $UNKNOWN_BINARY && $main::prog ne $value) {
-          printf STDERR ("Warning: Mismatched binary name '%s', using '%s'.\n",
-                         $main::prog, $value);
-        }
-        $main::prog = $value;
-      } else {
-        printf STDERR ("Ignoring unknown variable in symbols list: " .
-            "'%s' = '%s'\n", $variable, $value);
-      }
-    }
-  }
-  return $map;
-}
-
-sub URLEncode {
-  my $str = shift;
-  $str =~ s/([^A-Za-z0-9\-_.!~*'()])/ sprintf "%%%02x", ord $1 /eg;
-  return $str;
-}
-
-sub AppendSymbolFilterParams {
-  my $url = shift;
-  my @params = ();
-  if ($main::opt_retain ne '') {
-    push(@params, sprintf("retain=%s", URLEncode($main::opt_retain)));
-  }
-  if ($main::opt_exclude ne '') {
-    push(@params, sprintf("exclude=%s", URLEncode($main::opt_exclude)));
-  }
-  if (scalar @params > 0) {
-    $url = sprintf("%s?%s", $url, join("&", @params));
-  }
-  return $url;
-}
-
-# Fetches and processes symbols to prepare them for use in the profile output
-# code.  If the optional 'symbol_map' arg is not given, fetches symbols from
-# $SYMBOL_PAGE for all PC values found in profile.  Otherwise, the raw symbols
-# are assumed to have already been fetched into 'symbol_map' and are simply
-# extracted and processed.
-sub FetchSymbols {
-  my $pcset = shift;
-  my $symbol_map = shift;
-
-  my %seen = ();
-  my @pcs = grep { !$seen{$_}++ } keys(%$pcset);  # uniq
-
-  if (!defined($symbol_map)) {
-    my $post_data = join("+", sort((map {"0x" . "$_"} @pcs)));
-
-    open(POSTFILE, ">$main::tmpfile_sym");
-    print POSTFILE $post_data;
-    close(POSTFILE);
-
-    my $url = SymbolPageURL();
-
-    my $command_line;
-    if (join(" ", @URL_FETCHER) =~ m/\bcurl -s/) {
-      $url = ResolveRedirectionForCurl($url);
-      $url = AppendSymbolFilterParams($url);
-      $command_line = ShellEscape(@URL_FETCHER, "-d", "\@$main::tmpfile_sym",
-                                  $url);
-    } else {
-      $url = AppendSymbolFilterParams($url);
-      $command_line = (ShellEscape(@URL_FETCHER, "--post", $url)
-                       . " < " . ShellEscape($main::tmpfile_sym));
-    }
-    # We use c++filt in case $SYMBOL_PAGE gives us mangled symbols.
-    my $escaped_cppfilt = ShellEscape($obj_tool_map{"c++filt"});
-    open(SYMBOL, "$command_line | $escaped_cppfilt |") or error($command_line);
-    $symbol_map = ReadSymbols(*SYMBOL{IO});
-    close(SYMBOL);
-  }
-
-  my $symbols = {};
-  foreach my $pc (@pcs) {
-    my $fullname;
-    # For 64 bits binaries, symbols are extracted with 8 leading zeroes.
-    # Then /symbol reads the long symbols in as uint64, and outputs
-    # the result with a "0x%08llx" format which get rid of the zeroes.
-    # By removing all the leading zeroes in both $pc and the symbols from
-    # /symbol, the symbols match and are retrievable from the map.
-    my $shortpc = $pc;
-    $shortpc =~ s/^0*//;
-    # Each line may have a list of names, which includes the function
-    # and also other functions it has inlined.  They are separated (in
-    # PrintSymbolizedProfile), by --, which is illegal in function names.
-    my $fullnames;
-    if (defined($symbol_map->{$shortpc})) {
-      $fullnames = $symbol_map->{$shortpc};
-    } else {
-      $fullnames = "0x" . $pc;  # Just use addresses
-    }
-    my $sym = [];
-    $symbols->{$pc} = $sym;
-    foreach my $fullname (split("--", $fullnames)) {
-      my $name = ShortFunctionName($fullname);
-      push(@{$sym}, $name, "?", $fullname);
-    }
-  }
-  return $symbols;
-}
-
-sub BaseName {
-  my $file_name = shift;
-  $file_name =~ s!^.*/!!;  # Remove directory name
-  return $file_name;
-}
-
-sub MakeProfileBaseName {
-  my ($binary_name, $profile_name) = @_;
-  my ($host, $baseURL, $path) = ParseProfileURL($profile_name);
-  my $binary_shortname = BaseName($binary_name);
-  return sprintf("%s.%s.%s",
-                 $binary_shortname, $main::op_time, $host);
-}
-
-sub FetchDynamicProfile {
-  my $binary_name = shift;
-  my $profile_name = shift;
-  my $fetch_name_only = shift;
-  my $encourage_patience = shift;
-
-  if (!IsProfileURL($profile_name)) {
-    return $profile_name;
-  } else {
-    my ($host, $baseURL, $path) = ParseProfileURL($profile_name);
-    if ($path eq "" || $path eq "/") {
-      # Missing type specifier defaults to cpu-profile
-      $path = $PROFILE_PAGE;
-    }
-
-    my $profile_file = MakeProfileBaseName($binary_name, $profile_name);
-
-    my $url = "$baseURL$path";
-    my $fetch_timeout = undef;
-    if ($path =~ m/$PROFILE_PAGE|$PMUPROFILE_PAGE/) {
-      if ($path =~ m/[?]/) {
-        $url .= "&";
-      } else {
-        $url .= "?";
-      }
-      $url .= sprintf("seconds=%d", $main::opt_seconds);
-      $fetch_timeout = $main::opt_seconds * 1.01 + 60;
-      # Set $profile_type for consumption by PrintSymbolizedProfile.
-      $main::profile_type = 'cpu';
-    } else {
-      # For non-CPU profiles, we add a type-extension to
-      # the target profile file name.
-      my $suffix = $path;
-      $suffix =~ s,/,.,g;
-      $profile_file .= $suffix;
-      # Set $profile_type for consumption by PrintSymbolizedProfile.
-      if ($path =~ m/$HEAP_PAGE/) {
-        $main::profile_type = 'heap';
-      } elsif ($path =~ m/$GROWTH_PAGE/) {
-        $main::profile_type = 'growth';
-      } elsif ($path =~ m/$CONTENTION_PAGE/) {
-        $main::profile_type = 'contention';
-      }
-    }
-
-    my $profile_dir = $ENV{"JEPROF_TMPDIR"} || ($ENV{HOME} . "/jeprof");
-    if (! -d $profile_dir) {
-      mkdir($profile_dir)
-          || die("Unable to create profile directory $profile_dir: $!\n");
-    }
-    my $tmp_profile = "$profile_dir/.tmp.$profile_file";
-    my $real_profile = "$profile_dir/$profile_file";
-
-    if ($fetch_name_only > 0) {
-      return $real_profile;
-    }
-
-    my @fetcher = AddFetchTimeout($fetch_timeout, @URL_FETCHER);
-    my $cmd = ShellEscape(@fetcher, $url) . " > " . ShellEscape($tmp_profile);
-    if ($path =~ m/$PROFILE_PAGE|$PMUPROFILE_PAGE|$CENSUSPROFILE_PAGE/){
-      print STDERR "Gathering CPU profile from $url for $main::opt_seconds seconds to\n  ${real_profile}\n";
-      if ($encourage_patience) {
-        print STDERR "Be patient...\n";
-      }
-    } else {
-      print STDERR "Fetching $path profile from $url to\n  ${real_profile}\n";
-    }
-
-    (system($cmd) == 0) || error("Failed to get profile: $cmd: $!\n");
-    (system("mv", $tmp_profile, $real_profile) == 0) || error("Unable to rename profile\n");
-    print STDERR "Wrote profile to $real_profile\n";
-    $main::collected_profile = $real_profile;
-    return $main::collected_profile;
-  }
-}
-
-# Collect profiles in parallel
-sub FetchDynamicProfiles {
-  my $items = scalar(@main::pfile_args);
-  my $levels = log($items) / log(2);
-
-  if ($items == 1) {
-    $main::profile_files[0] = FetchDynamicProfile($main::prog, $main::pfile_args[0], 0, 1);
-  } else {
-    # math rounding issues
-    if ((2 ** $levels) < $items) {
-     $levels++;
-    }
-    my $count = scalar(@main::pfile_args);
-    for (my $i = 0; $i < $count; $i++) {
-      $main::profile_files[$i] = FetchDynamicProfile($main::prog, $main::pfile_args[$i], 1, 0);
-    }
-    print STDERR "Fetching $count profiles, Be patient...\n";
-    FetchDynamicProfilesRecurse($levels, 0, 0);
-    $main::collected_profile = join(" \\\n    ", @main::profile_files);
-  }
-}
-
-# Recursively fork a process to get enough processes
-# collecting profiles
-sub FetchDynamicProfilesRecurse {
-  my $maxlevel = shift;
-  my $level = shift;
-  my $position = shift;
-
-  if (my $pid = fork()) {
-    $position = 0 | ($position << 1);
-    TryCollectProfile($maxlevel, $level, $position);
-    wait;
-  } else {
-    $position = 1 | ($position << 1);
-    TryCollectProfile($maxlevel, $level, $position);
-    cleanup();
-    exit(0);
-  }
-}
-
-# Collect a single profile
-sub TryCollectProfile {
-  my $maxlevel = shift;
-  my $level = shift;
-  my $position = shift;
-
-  if ($level >= ($maxlevel - 1)) {
-    if ($position < scalar(@main::pfile_args)) {
-      FetchDynamicProfile($main::prog, $main::pfile_args[$position], 0, 0);
-    }
-  } else {
-    FetchDynamicProfilesRecurse($maxlevel, $level+1, $position);
-  }
-}
-
-##### Parsing code #####
-
-# Provide a small streaming-read module to handle very large
-# cpu-profile files.  Stream in chunks along a sliding window.
-# Provides an interface to get one 'slot', correctly handling
-# endian-ness differences.  A slot is one 32-bit or 64-bit word
-# (depending on the input profile).  We tell endianness and bit-size
-# for the profile by looking at the first 8 bytes: in cpu profiles,
-# the second slot is always 3 (we'll accept anything that's not 0).
-BEGIN {
-  package CpuProfileStream;
-
-  sub new {
-    my ($class, $file, $fname) = @_;
-    my $self = { file        => $file,
-                 base        => 0,
-                 stride      => 512 * 1024,   # must be a multiple of bitsize/8
-                 slots       => [],
-                 unpack_code => "",           # N for big-endian, V for little
-                 perl_is_64bit => 1,          # matters if profile is 64-bit
-    };
-    bless $self, $class;
-    # Let unittests adjust the stride
-    if ($main::opt_test_stride > 0) {
-      $self->{stride} = $main::opt_test_stride;
-    }
-    # Read the first two slots to figure out bitsize and endianness.
-    my $slots = $self->{slots};
-    my $str;
-    read($self->{file}, $str, 8);
-    # Set the global $address_length based on what we see here.
-    # 8 is 32-bit (8 hexadecimal chars); 16 is 64-bit (16 hexadecimal chars).
-    $address_length = ($str eq (chr(0)x8)) ? 16 : 8;
-    if ($address_length == 8) {
-      if (substr($str, 6, 2) eq chr(0)x2) {
-        $self->{unpack_code} = 'V';  # Little-endian.
-      } elsif (substr($str, 4, 2) eq chr(0)x2) {
-        $self->{unpack_code} = 'N';  # Big-endian
-      } else {
-        ::error("$fname: header size >= 2**16\n");
-      }
-      @$slots = unpack($self->{unpack_code} . "*", $str);
-    } else {
-      # If we're a 64-bit profile, check if we're a 64-bit-capable
-      # perl.  Otherwise, each slot will be represented as a float
-      # instead of an int64, losing precision and making all the
-      # 64-bit addresses wrong.  We won't complain yet, but will
-      # later if we ever see a value that doesn't fit in 32 bits.
-      my $has_q = 0;
-      eval { $has_q = pack("Q", "1") ? 1 : 1; };
-      if (!$has_q) {
-        $self->{perl_is_64bit} = 0;
-      }
-      read($self->{file}, $str, 8);
-      if (substr($str, 4, 4) eq chr(0)x4) {
-        # We'd love to use 'Q', but it's a) not universal, b) not endian-proof.
-        $self->{unpack_code} = 'V';  # Little-endian.
-      } elsif (substr($str, 0, 4) eq chr(0)x4) {
-        $self->{unpack_code} = 'N';  # Big-endian
-      } else {
-        ::error("$fname: header size >= 2**32\n");
-      }
-      my @pair = unpack($self->{unpack_code} . "*", $str);
-      # Since we know one of the pair is 0, it's fine to just add them.
-      @$slots = (0, $pair[0] + $pair[1]);
-    }
-    return $self;
-  }
-
-  # Load more data when we access slots->get(X) which is not yet in memory.
-  sub overflow {
-    my ($self) = @_;
-    my $slots = $self->{slots};
-    $self->{base} += $#$slots + 1;   # skip over data we're replacing
-    my $str;
-    read($self->{file}, $str, $self->{stride});
-    if ($address_length == 8) {      # the 32-bit case
-      # This is the easy case: unpack provides 32-bit unpacking primitives.
-      @$slots = unpack($self->{unpack_code} . "*", $str);
-    } else {
-      # We need to unpack 32 bits at a time and combine.
-      my @b32_values = unpack($self->{unpack_code} . "*", $str);
-      my @b64_values = ();
-      for (my $i = 0; $i < $#b32_values; $i += 2) {
-        # TODO(csilvers): if this is a 32-bit perl, the math below
-        #    could end up in a too-large int, which perl will promote
-        #    to a double, losing necessary precision.  Deal with that.
-        #    Right now, we just die.
-        my ($lo, $hi) = ($b32_values[$i], $b32_values[$i+1]);
-        if ($self->{unpack_code} eq 'N') {    # big-endian
-          ($lo, $hi) = ($hi, $lo);
-        }
-        my $value = $lo + $hi * (2**32);
-        if (!$self->{perl_is_64bit} &&   # check value is exactly represented
-            (($value % (2**32)) != $lo || int($value / (2**32)) != $hi)) {
-          ::error("Need a 64-bit perl to process this 64-bit profile.\n");
-        }
-        push(@b64_values, $value);
-      }
-      @$slots = @b64_values;
-    }
-  }
-
-  # Access the i-th long in the file (logically), or -1 at EOF.
-  sub get {
-    my ($self, $idx) = @_;
-    my $slots = $self->{slots};
-    while ($#$slots >= 0) {
-      if ($idx < $self->{base}) {
-        # The only time we expect a reference to $slots[$i - something]
-        # after referencing $slots[$i] is reading the very first header.
-        # Since $stride > |header|, that shouldn't cause any lookback
-        # errors.  And everything after the header is sequential.
-        print STDERR "Unexpected look-back reading CPU profile";
-        return -1;   # shrug, don't know what better to return
-      } elsif ($idx > $self->{base} + $#$slots) {
-        $self->overflow();
-      } else {
-        return $slots->[$idx - $self->{base}];
-      }
-    }
-    # If we get here, $slots is [], which means we've reached EOF
-    return -1;  # unique since slots is supposed to hold unsigned numbers
-  }
-}
-
-# Reads the top, 'header' section of a profile, and returns the last
-# line of the header, commonly called a 'header line'.  The header
-# section of a profile consists of zero or more 'command' lines that
-# are instructions to jeprof, which jeprof executes when reading the
-# header.  All 'command' lines start with a %.  After the command
-# lines is the 'header line', which is a profile-specific line that
-# indicates what type of profile it is, and perhaps other global
-# information about the profile.  For instance, here's a header line
-# for a heap profile:
-#   heap profile:     53:    38236 [  5525:  1284029] @ heapprofile
-# For historical reasons, the CPU profile does not contain a text-
-# readable header line.  If the profile looks like a CPU profile,
-# this function returns "".  If no header line could be found, this
-# function returns undef.
-#
-# The following commands are recognized:
-#   %warn -- emit the rest of this line to stderr, prefixed by 'WARNING:'
-#
-# The input file should be in binmode.
-sub ReadProfileHeader {
-  local *PROFILE = shift;
-  my $firstchar = "";
-  my $line = "";
-  read(PROFILE, $firstchar, 1);
-  seek(PROFILE, -1, 1);                    # unread the firstchar
-  if ($firstchar !~ /[[:print:]]/) {       # is not a text character
-    return "";
-  }
-  while (defined($line = <PROFILE>)) {
-    $line =~ s/\r//g;   # turn windows-looking lines into unix-looking lines
-    if ($line =~ /^%warn\s+(.*)/) {        # 'warn' command
-      # Note this matches both '%warn blah\n' and '%warn\n'.
-      print STDERR "WARNING: $1\n";        # print the rest of the line
-    } elsif ($line =~ /^%/) {
-      print STDERR "Ignoring unknown command from profile header: $line";
-    } else {
-      # End of commands, must be the header line.
-      return $line;
-    }
-  }
-  return undef;     # got to EOF without seeing a header line
-}
-
-sub IsSymbolizedProfileFile {
-  my $file_name = shift;
-  if (!(-e $file_name) || !(-r $file_name)) {
-    return 0;
-  }
-  # Check if the file contains a symbol-section marker.
-  open(TFILE, "<$file_name");
-  binmode TFILE;
-  my $firstline = ReadProfileHeader(*TFILE);
-  close(TFILE);
-  if (!$firstline) {
-    return 0;
-  }
-  $SYMBOL_PAGE =~ m,[^/]+$,;    # matches everything after the last slash
-  my $symbol_marker = $&;
-  return $firstline =~ /^--- *$symbol_marker/;
-}
-
-# Parse profile generated by common/profiler.cc and return a reference
-# to a map:
-#      $result->{version}     Version number of profile file
-#      $result->{period}      Sampling period (in microseconds)
-#      $result->{profile}     Profile object
-#      $result->{threads}     Map of thread IDs to profile objects
-#      $result->{map}         Memory map info from profile
-#      $result->{pcs}         Hash of all PC values seen, key is hex address
-sub ReadProfile {
-  my $prog = shift;
-  my $fname = shift;
-  my $result;            # return value
-
-  $CONTENTION_PAGE =~ m,[^/]+$,;    # matches everything after the last slash
-  my $contention_marker = $&;
-  $GROWTH_PAGE  =~ m,[^/]+$,;    # matches everything after the last slash
-  my $growth_marker = $&;
-  $SYMBOL_PAGE =~ m,[^/]+$,;    # matches everything after the last slash
-  my $symbol_marker = $&;
-  $PROFILE_PAGE =~ m,[^/]+$,;    # matches everything after the last slash
-  my $profile_marker = $&;
-  $HEAP_PAGE =~ m,[^/]+$,;    # matches everything after the last slash
-  my $heap_marker = $&;
-
-  # Look at first line to see if it is a heap or a CPU profile.
-  # CPU profile may start with no header at all, and just binary data
-  # (starting with \0\0\0\0) -- in that case, don't try to read the
-  # whole firstline, since it may be gigabytes(!) of data.
-  open(PROFILE, "<$fname") || error("$fname: $!\n");
-  binmode PROFILE;      # New perls do UTF-8 processing
-  my $header = ReadProfileHeader(*PROFILE);
-  if (!defined($header)) {   # means "at EOF"
-    error("Profile is empty.\n");
-  }
-
-  my $symbols;
-  if ($header =~ m/^--- *$symbol_marker/o) {
-    # Verify that the user asked for a symbolized profile
-    if (!$main::use_symbolized_profile) {
-      # we have both a binary and symbolized profiles, abort
-      error("FATAL ERROR: Symbolized profile\n   $fname\ncannot be used with " .
-            "a binary arg. Try again without passing\n   $prog\n");
-    }
-    # Read the symbol section of the symbolized profile file.
-    $symbols = ReadSymbols(*PROFILE{IO});
-    # Read the next line to get the header for the remaining profile.
-    $header = ReadProfileHeader(*PROFILE) || "";
-  }
-
-  if ($header =~ m/^--- *($heap_marker|$growth_marker)/o) {
-    # Skip "--- ..." line for profile types that have their own headers.
-    $header = ReadProfileHeader(*PROFILE) || "";
-  }
-
-  $main::profile_type = '';
-
-  if ($header =~ m/^heap profile:.*$growth_marker/o) {
-    $main::profile_type = 'growth';
-    $result =  ReadHeapProfile($prog, *PROFILE, $header);
-  } elsif ($header =~ m/^heap profile:/) {
-    $main::profile_type = 'heap';
-    $result =  ReadHeapProfile($prog, *PROFILE, $header);
-  } elsif ($header =~ m/^heap/) {
-    $main::profile_type = 'heap';
-    $result = ReadThreadedHeapProfile($prog, $fname, $header);
-  } elsif ($header =~ m/^--- *$contention_marker/o) {
-    $main::profile_type = 'contention';
-    $result = ReadSynchProfile($prog, *PROFILE);
-  } elsif ($header =~ m/^--- *Stacks:/) {
-    print STDERR
-      "Old format contention profile: mistakenly reports " .
-      "condition variable signals as lock contentions.\n";
-    $main::profile_type = 'contention';
-    $result = ReadSynchProfile($prog, *PROFILE);
-  } elsif ($header =~ m/^--- *$profile_marker/) {
-    # the binary cpu profile data starts immediately after this line
-    $main::profile_type = 'cpu';
-    $result = ReadCPUProfile($prog, $fname, *PROFILE);
-  } else {
-    if (defined($symbols)) {
-      # a symbolized profile contains a format we don't recognize, bail out
-      error("$fname: Cannot recognize profile section after symbols.\n");
-    }
-    # no ascii header present -- must be a CPU profile
-    $main::profile_type = 'cpu';
-    $result = ReadCPUProfile($prog, $fname, *PROFILE);
-  }
-
-  close(PROFILE);
-
-  # if we got symbols along with the profile, return those as well
-  if (defined($symbols)) {
-    $result->{symbols} = $symbols;
-  }
-
-  return $result;
-}
-
-# Subtract one from caller pc so we map back to call instr.
-# However, don't do this if we're reading a symbolized profile
-# file, in which case the subtract-one was done when the file
-# was written.
-#
-# We apply the same logic to all readers, though ReadCPUProfile uses an
-# independent implementation.
-sub FixCallerAddresses {
-  my $stack = shift;
-  # --raw/http: Always subtract one from pc's, because PrintSymbolizedProfile()
-  # dumps unadjusted profiles.
-  {
-    $stack =~ /(\s)/;
-    my $delimiter = $1;
-    my @addrs = split(' ', $stack);
-    my @fixedaddrs;
-    $#fixedaddrs = $#addrs;
-    if ($#addrs >= 0) {
-      $fixedaddrs[0] = $addrs[0];
-    }
-    for (my $i = 1; $i <= $#addrs; $i++) {
-      $fixedaddrs[$i] = AddressSub($addrs[$i], "0x1");
-    }
-    return join $delimiter, @fixedaddrs;
-  }
-}
-
-# CPU profile reader
-sub ReadCPUProfile {
-  my $prog = shift;
-  my $fname = shift;       # just used for logging
-  local *PROFILE = shift;
-  my $version;
-  my $period;
-  my $i;
-  my $profile = {};
-  my $pcs = {};
-
-  # Parse string into array of slots.
-  my $slots = CpuProfileStream->new(*PROFILE, $fname);
-
-  # Read header.  The current header version is a 5-element structure
-  # containing:
-  #   0: header count (always 0)
-  #   1: header "words" (after this one: 3)
-  #   2: format version (0)
-  #   3: sampling period (usec)
-  #   4: unused padding (always 0)
-  if ($slots->get(0) != 0 ) {
-    error("$fname: not a profile file, or old format profile file\n");
-  }
-  $i = 2 + $slots->get(1);
-  $version = $slots->get(2);
-  $period = $slots->get(3);
-  # Do some sanity checking on these header values.
-  if ($version > (2**32) || $period > (2**32) || $i > (2**32) || $i < 5) {
-    error("$fname: not a profile file, or corrupted profile file\n");
-  }
-
-  # Parse profile
-  while ($slots->get($i) != -1) {
-    my $n = $slots->get($i++);
-    my $d = $slots->get($i++);
-    if ($d > (2**16)) {  # TODO(csilvers): what's a reasonable max-stack-depth?
-      my $addr = sprintf("0%o", $i * ($address_length == 8 ? 4 : 8));
-      print STDERR "At index $i (address $addr):\n";
-      error("$fname: stack trace depth >= 2**32\n");
-    }
-    if ($slots->get($i) == 0) {
-      # End of profile data marker
-      $i += $d;
-      last;
-    }
-
-    # Make key out of the stack entries
-    my @k = ();
-    for (my $j = 0; $j < $d; $j++) {
-      my $pc = $slots->get($i+$j);
-      # Subtract one from caller pc so we map back to call instr.
-      $pc--;
-      $pc = sprintf("%0*x", $address_length, $pc);
-      $pcs->{$pc} = 1;
-      push @k, $pc;
-    }
-
-    AddEntry($profile, (join "\n", @k), $n);
-    $i += $d;
-  }
-
-  # Parse map
-  my $map = '';
-  seek(PROFILE, $i * 4, 0);
-  read(PROFILE, $map, (stat PROFILE)[7]);
-
-  my $r = {};
-  $r->{version} = $version;
-  $r->{period} = $period;
-  $r->{profile} = $profile;
-  $r->{libs} = ParseLibraries($prog, $map, $pcs);
-  $r->{pcs} = $pcs;
-
-  return $r;
-}
-
-sub HeapProfileIndex {
-  my $index = 1;
-  if ($main::opt_inuse_space) {
-    $index = 1;
-  } elsif ($main::opt_inuse_objects) {
-    $index = 0;
-  } elsif ($main::opt_alloc_space) {
-    $index = 3;
-  } elsif ($main::opt_alloc_objects) {
-    $index = 2;
-  }
-  return $index;
-}
-
-sub ReadMappedLibraries {
-  my $fh = shift;
-  my $map = "";
-  # Read the /proc/self/maps data
-  while (<$fh>) {
-    s/\r//g;         # turn windows-looking lines into unix-looking lines
-    $map .= $_;
-  }
-  return $map;
-}
-
-sub ReadMemoryMap {
-  my $fh = shift;
-  my $map = "";
-  # Read /proc/self/maps data as formatted by DumpAddressMap()
-  my $buildvar = "";
-  while (<PROFILE>) {
-    s/\r//g;         # turn windows-looking lines into unix-looking lines
-    # Parse "build=<dir>" specification if supplied
-    if (m/^\s*build=(.*)\n/) {
-      $buildvar = $1;
-    }
-
-    # Expand "$build" variable if available
-    $_ =~ s/\$build\b/$buildvar/g;
-
-    $map .= $_;
-  }
-  return $map;
-}
-
-sub AdjustSamples {
-  my ($sample_adjustment, $sampling_algorithm, $n1, $s1, $n2, $s2) = @_;
-  if ($sample_adjustment) {
-    if ($sampling_algorithm == 2) {
-      # Remote-heap version 2
-      # The sampling frequency is the rate of a Poisson process.
-      # This means that the probability of sampling an allocation of
-      # size X with sampling rate Y is 1 - exp(-X/Y)
-      if ($n1 != 0) {
-        my $ratio = (($s1*1.0)/$n1)/($sample_adjustment);
-        my $scale_factor = 1/(1 - exp(-$ratio));
-        $n1 *= $scale_factor;
-        $s1 *= $scale_factor;
-      }
-      if ($n2 != 0) {
-        my $ratio = (($s2*1.0)/$n2)/($sample_adjustment);
-        my $scale_factor = 1/(1 - exp(-$ratio));
-        $n2 *= $scale_factor;
-        $s2 *= $scale_factor;
-      }
-    } else {
-      # Remote-heap version 1
-      my $ratio;
-      $ratio = (($s1*1.0)/$n1)/($sample_adjustment);
-      if ($ratio < 1) {
-        $n1 /= $ratio;
-        $s1 /= $ratio;
-      }
-      $ratio = (($s2*1.0)/$n2)/($sample_adjustment);
-      if ($ratio < 1) {
-        $n2 /= $ratio;
-        $s2 /= $ratio;
-      }
-    }
-  }
-  return ($n1, $s1, $n2, $s2);
-}
-
-sub ReadHeapProfile {
-  my $prog = shift;
-  local *PROFILE = shift;
-  my $header = shift;
-
-  my $index = HeapProfileIndex();
-
-  # Find the type of this profile.  The header line looks like:
-  #    heap profile:   1246:  8800744 [  1246:  8800744] @ <heap-url>/266053
-  # There are two pairs <count: size>, the first inuse objects/space, and the
-  # second allocated objects/space.  This is followed optionally by a profile
-  # type, and if that is present, optionally by a sampling frequency.
-  # For remote heap profiles (v1):
-  # The interpretation of the sampling frequency is that the profiler, for
-  # each sample, calculates a uniformly distributed random integer less than
-  # the given value, and records the next sample after that many bytes have
-  # been allocated.  Therefore, the expected sample interval is half of the
-  # given frequency.  By default, if not specified, the expected sample
-  # interval is 128KB.  Only remote-heap-page profiles are adjusted for
-  # sample size.
-  # For remote heap profiles (v2):
-  # The sampling frequency is the rate of a Poisson process. This means that
-  # the probability of sampling an allocation of size X with sampling rate Y
-  # is 1 - exp(-X/Y)
-  # For version 2, a typical header line might look like this:
-  # heap profile:   1922: 127792360 [  1922: 127792360] @ <heap-url>_v2/524288
-  # the trailing number (524288) is the sampling rate. (Version 1 showed
-  # double the 'rate' here)
-  my $sampling_algorithm = 0;
-  my $sample_adjustment = 0;
-  chomp($header);
-  my $type = "unknown";
-  if ($header =~ m"^heap profile:\s*(\d+):\s+(\d+)\s+\[\s*(\d+):\s+(\d+)\](\s*@\s*([^/]*)(/(\d+))?)?") {
-    if (defined($6) && ($6 ne '')) {
-      $type = $6;
-      my $sample_period = $8;
-      # $type is "heapprofile" for profiles generated by the
-      # heap-profiler, and either "heap" or "heap_v2" for profiles
-      # generated by sampling directly within tcmalloc.  It can also
-      # be "growth" for heap-growth profiles.  The first is typically
-      # found for profiles generated locally, and the others for
-      # remote profiles.
-      if (($type eq "heapprofile") || ($type !~ /heap/) ) {
-        # No need to adjust for the sampling rate with heap-profiler-derived data
-        $sampling_algorithm = 0;
-      } elsif ($type =~ /_v2/) {
-        $sampling_algorithm = 2;     # version 2 sampling
-        if (defined($sample_period) && ($sample_period ne '')) {
-          $sample_adjustment = int($sample_period);
-        }
-      } else {
-        $sampling_algorithm = 1;     # version 1 sampling
-        if (defined($sample_period) && ($sample_period ne '')) {
-          $sample_adjustment = int($sample_period)/2;
-        }
-      }
-    } else {
-      # We detect whether or not this is a remote-heap profile by checking
-      # that the total-allocated stats ($n2,$s2) are exactly the
-      # same as the in-use stats ($n1,$s1).  It is remotely conceivable
-      # that a non-remote-heap profile may pass this check, but it is hard
-      # to imagine how that could happen.
-      # In this case it's so old it's guaranteed to be remote-heap version 1.
-      my ($n1, $s1, $n2, $s2) = ($1, $2, $3, $4);
-      if (($n1 == $n2) && ($s1 == $s2)) {
-        # This is likely to be a remote-heap based sample profile
-        $sampling_algorithm = 1;
-      }
-    }
-  }
-
-  if ($sampling_algorithm > 0) {
-    # For remote-heap generated profiles, adjust the counts and sizes to
-    # account for the sample rate (we sample once every 128KB by default).
-    if ($sample_adjustment == 0) {
-      # Turn on profile adjustment.
-      $sample_adjustment = 128*1024;
-      print STDERR "Adjusting heap profiles for 1-in-128KB sampling rate\n";
-    } else {
-      printf STDERR ("Adjusting heap profiles for 1-in-%d sampling rate\n",
-                     $sample_adjustment);
-    }
-    if ($sampling_algorithm > 1) {
-      # We don't bother printing anything for the original version (version 1)
-      printf STDERR "Heap version $sampling_algorithm\n";
-    }
-  }
-
-  my $profile = {};
-  my $pcs = {};
-  my $map = "";
-
-  while (<PROFILE>) {
-    s/\r//g;         # turn windows-looking lines into unix-looking lines
-    if (/^MAPPED_LIBRARIES:/) {
-      $map .= ReadMappedLibraries(*PROFILE);
-      last;
-    }
-
-    if (/^--- Memory map:/) {
-      $map .= ReadMemoryMap(*PROFILE);
-      last;
-    }
-
-    # Read entry of the form:
-    #  <count1>: <bytes1> [<count2>: <bytes2>] @ a1 a2 a3 ... an
-    s/^\s*//;
-    s/\s*$//;
-    if (m/^\s*(\d+):\s+(\d+)\s+\[\s*(\d+):\s+(\d+)\]\s+@\s+(.*)$/) {
-      my $stack = $5;
-      my ($n1, $s1, $n2, $s2) = ($1, $2, $3, $4);
-      my @counts = AdjustSamples($sample_adjustment, $sampling_algorithm,
-                                 $n1, $s1, $n2, $s2);
-      AddEntries($profile, $pcs, FixCallerAddresses($stack), $counts[$index]);
-    }
-  }
-
-  my $r = {};
-  $r->{version} = "heap";
-  $r->{period} = 1;
-  $r->{profile} = $profile;
-  $r->{libs} = ParseLibraries($prog, $map, $pcs);
-  $r->{pcs} = $pcs;
-  return $r;
-}
-
-sub ReadThreadedHeapProfile {
-  my ($prog, $fname, $header) = @_;
-
-  my $index = HeapProfileIndex();
-  my $sampling_algorithm = 0;
-  my $sample_adjustment = 0;
-  chomp($header);
-  my $type = "unknown";
-  # Assuming a very specific type of header for now.
-  if ($header =~ m"^heap_v2/(\d+)") {
-    $type = "_v2";
-    $sampling_algorithm = 2;
-    $sample_adjustment = int($1);
-  }
-  if ($type ne "_v2" || !defined($sample_adjustment)) {
-    die "Threaded heap profiles require v2 sampling with a sample rate\n";
-  }
-
-  my $profile = {};
-  my $thread_profiles = {};
-  my $pcs = {};
-  my $map = "";
-  my $stack = "";
-
-  while (<PROFILE>) {
-    s/\r//g;
-    if (/^MAPPED_LIBRARIES:/) {
-      $map .= ReadMappedLibraries(*PROFILE);
-      last;
-    }
-
-    if (/^--- Memory map:/) {
-      $map .= ReadMemoryMap(*PROFILE);
-      last;
-    }
-
-    # Read entry of the form:
-    # @ a1 a2 ... an
-    #   t*: <count1>: <bytes1> [<count2>: <bytes2>]
-    #   t1: <count1>: <bytes1> [<count2>: <bytes2>]
-    #     ...
-    #   tn: <count1>: <bytes1> [<count2>: <bytes2>]
-    s/^\s*//;
-    s/\s*$//;
-    if (m/^@\s+(.*)$/) {
-      $stack = $1;
-    } elsif (m/^\s*(t(\*|\d+)):\s+(\d+):\s+(\d+)\s+\[\s*(\d+):\s+(\d+)\]$/) {
-      if ($stack eq "") {
-        # Still in the header, so this is just a per-thread summary.
-        next;
-      }
-      my $thread = $2;
-      my ($n1, $s1, $n2, $s2) = ($3, $4, $5, $6);
-      my @counts = AdjustSamples($sample_adjustment, $sampling_algorithm,
-                                 $n1, $s1, $n2, $s2);
-      if ($thread eq "*") {
-        AddEntries($profile, $pcs, FixCallerAddresses($stack), $counts[$index]);
-      } else {
-        if (!exists($thread_profiles->{$thread})) {
-          $thread_profiles->{$thread} = {};
-        }
-        AddEntries($thread_profiles->{$thread}, $pcs,
-                   FixCallerAddresses($stack), $counts[$index]);
-      }
-    }
-  }
-
-  my $r = {};
-  $r->{version} = "heap";
-  $r->{period} = 1;
-  $r->{profile} = $profile;
-  $r->{threads} = $thread_profiles;
-  $r->{libs} = ParseLibraries($prog, $map, $pcs);
-  $r->{pcs} = $pcs;
-  return $r;
-}
-
-sub ReadSynchProfile {
-  my $prog = shift;
-  local *PROFILE = shift;
-  my $header = shift;
-
-  my $map = '';
-  my $profile = {};
-  my $pcs = {};
-  my $sampling_period = 1;
-  my $cyclespernanosec = 2.8;   # Default assumption for old binaries
-  my $seen_clockrate = 0;
-  my $line;
-
-  my $index = 0;
-  if ($main::opt_total_delay) {
-    $index = 0;
-  } elsif ($main::opt_contentions) {
-    $index = 1;
-  } elsif ($main::opt_mean_delay) {
-    $index = 2;
-  }
-
-  while ( $line = <PROFILE> ) {
-    $line =~ s/\r//g;      # turn windows-looking lines into unix-looking lines
-    if ( $line =~ /^\s*(\d+)\s+(\d+) \@\s*(.*?)\s*$/ ) {
-      my ($cycles, $count, $stack) = ($1, $2, $3);
-
-      # Convert cycles to nanoseconds
-      $cycles /= $cyclespernanosec;
-
-      # Adjust for sampling done by application
-      $cycles *= $sampling_period;
-      $count *= $sampling_period;
-
-      my @values = ($cycles, $count, $cycles / $count);
-      AddEntries($profile, $pcs, FixCallerAddresses($stack), $values[$index]);
-
-    } elsif ( $line =~ /^(slow release).*thread \d+  \@\s*(.*?)\s*$/ ||
-              $line =~ /^\s*(\d+) \@\s*(.*?)\s*$/ ) {
-      my ($cycles, $stack) = ($1, $2);
-      if ($cycles !~ /^\d+$/) {
-        next;
-      }
-
-      # Convert cycles to nanoseconds
-      $cycles /= $cyclespernanosec;
-
-      # Adjust for sampling done by application
-      $cycles *= $sampling_period;
-
-      AddEntries($profile, $pcs, FixCallerAddresses($stack), $cycles);
-
-    } elsif ( $line =~ m/^([a-z][^=]*)=(.*)$/ ) {
-      my ($variable, $value) = ($1,$2);
-      for ($variable, $value) {
-        s/^\s+//;
-        s/\s+$//;
-      }
-      if ($variable eq "cycles/second") {
-        $cyclespernanosec = $value / 1e9;
-        $seen_clockrate = 1;
-      } elsif ($variable eq "sampling period") {
-        $sampling_period = $value;
-      } elsif ($variable eq "ms since reset") {
-        # Currently nothing is done with this value in jeprof
-        # So we just silently ignore it for now
-      } elsif ($variable eq "discarded samples") {
-        # Currently nothing is done with this value in jeprof
-        # So we just silently ignore it for now
-      } else {
-        printf STDERR ("Ignoring unnknown variable in /contention output: " .
-                       "'%s' = '%s'\n",$variable,$value);
-      }
-    } else {
-      # Memory map entry
-      $map .= $line;
-    }
-  }
-
-  if (!$seen_clockrate) {
-    printf STDERR ("No cycles/second entry in profile; Guessing %.1f GHz\n",
-                   $cyclespernanosec);
-  }
-
-  my $r = {};
-  $r->{version} = 0;
-  $r->{period} = $sampling_period;
-  $r->{profile} = $profile;
-  $r->{libs} = ParseLibraries($prog, $map, $pcs);
-  $r->{pcs} = $pcs;
-  return $r;
-}
-
-# Given a hex value in the form "0x1abcd" or "1abcd", return either
-# "0001abcd" or "000000000001abcd", depending on the current (global)
-# address length.
-sub HexExtend {
-  my $addr = shift;
-
-  $addr =~ s/^(0x)?0*//;
-  my $zeros_needed = $address_length - length($addr);
-  if ($zeros_needed < 0) {
-    printf STDERR "Warning: address $addr is longer than address length $address_length\n";
-    return $addr;
-  }
-  return ("0" x $zeros_needed) . $addr;
-}
-
-##### Symbol extraction #####
-
-# Aggressively search the lib_prefix values for the given library
-# If all else fails, just return the name of the library unmodified.
-# If the lib_prefix is "/my/path,/other/path" and $file is "/lib/dir/mylib.so"
-# it will search the following locations in this order, until it finds a file:
-#   /my/path/lib/dir/mylib.so
-#   /other/path/lib/dir/mylib.so
-#   /my/path/dir/mylib.so
-#   /other/path/dir/mylib.so
-#   /my/path/mylib.so
-#   /other/path/mylib.so
-#   /lib/dir/mylib.so              (returned as last resort)
-sub FindLibrary {
-  my $file = shift;
-  my $suffix = $file;
-
-  # Search for the library as described above
-  do {
-    foreach my $prefix (@prefix_list) {
-      my $fullpath = $prefix . $suffix;
-      if (-e $fullpath) {
-        return $fullpath;
-      }
-    }
-  } while ($suffix =~ s|^/[^/]+/|/|);
-  return $file;
-}
-
-# Return path to library with debugging symbols.
-# For libc libraries, the copy in /usr/lib/debug contains debugging symbols
-sub DebuggingLibrary {
-  my $file = shift;
-  if ($file =~ m|^/|) {
-      if (-f "/usr/lib/debug$file") {
-        return "/usr/lib/debug$file";
-      } elsif (-f "/usr/lib/debug$file.debug") {
-        return "/usr/lib/debug$file.debug";
-      }
-  }
-  return undef;
-}
-
-# Parse text section header of a library using objdump
-sub ParseTextSectionHeaderFromObjdump {
-  my $lib = shift;
-
-  my $size = undef;
-  my $vma;
-  my $file_offset;
-  # Get objdump output from the library file to figure out how to
-  # map between mapped addresses and addresses in the library.
-  my $cmd = ShellEscape($obj_tool_map{"objdump"}, "-h", $lib);
-  open(OBJDUMP, "$cmd |") || error("$cmd: $!\n");
-  while (<OBJDUMP>) {
-    s/\r//g;         # turn windows-looking lines into unix-looking lines
-    # Idx Name          Size      VMA       LMA       File off  Algn
-    #  10 .text         00104b2c  420156f0  420156f0  000156f0  2**4
-    # For 64-bit objects, VMA and LMA will be 16 hex digits, size and file
-    # offset may still be 8.  But AddressSub below will still handle that.
-    my @x = split;
-    if (($#x >= 6) && ($x[1] eq '.text')) {
-      $size = $x[2];
-      $vma = $x[3];
-      $file_offset = $x[5];
-      last;
-    }
-  }
-  close(OBJDUMP);
-
-  if (!defined($size)) {
-    return undef;
-  }
-
-  my $r = {};
-  $r->{size} = $size;
-  $r->{vma} = $vma;
-  $r->{file_offset} = $file_offset;
-
-  return $r;
-}
-
-# Parse text section header of a library using otool (on OS X)
-sub ParseTextSectionHeaderFromOtool {
-  my $lib = shift;
-
-  my $size = undef;
-  my $vma = undef;
-  my $file_offset = undef;
-  # Get otool output from the library file to figure out how to
-  # map between mapped addresses and addresses in the library.
-  my $command = ShellEscape($obj_tool_map{"otool"}, "-l", $lib);
-  open(OTOOL, "$command |") || error("$command: $!\n");
-  my $cmd = "";
-  my $sectname = "";
-  my $segname = "";
-  foreach my $line (<OTOOL>) {
-    $line =~ s/\r//g;      # turn windows-looking lines into unix-looking lines
-    # Load command <#>
-    #       cmd LC_SEGMENT
-    # [...]
-    # Section
-    #   sectname __text
-    #    segname __TEXT
-    #       addr 0x000009f8
-    #       size 0x00018b9e
-    #     offset 2552
-    #      align 2^2 (4)
-    # We will need to strip off the leading 0x from the hex addresses,
-    # and convert the offset into hex.
-    if ($line =~ /Load command/) {
-      $cmd = "";
-      $sectname = "";
-      $segname = "";
-    } elsif ($line =~ /Section/) {
-      $sectname = "";
-      $segname = "";
-    } elsif ($line =~ /cmd (\w+)/) {
-      $cmd = $1;
-    } elsif ($line =~ /sectname (\w+)/) {
-      $sectname = $1;
-    } elsif ($line =~ /segname (\w+)/) {
-      $segname = $1;
-    } elsif (!(($cmd eq "LC_SEGMENT" || $cmd eq "LC_SEGMENT_64") &&
-               $sectname eq "__text" &&
-               $segname eq "__TEXT")) {
-      next;
-    } elsif ($line =~ /\baddr 0x([0-9a-fA-F]+)/) {
-      $vma = $1;
-    } elsif ($line =~ /\bsize 0x([0-9a-fA-F]+)/) {
-      $size = $1;
-    } elsif ($line =~ /\boffset ([0-9]+)/) {
-      $file_offset = sprintf("%016x", $1);
-    }
-    if (defined($vma) && defined($size) && defined($file_offset)) {
-      last;
-    }
-  }
-  close(OTOOL);
-
-  if (!defined($vma) || !defined($size) || !defined($file_offset)) {
-     return undef;
-  }
-
-  my $r = {};
-  $r->{size} = $size;
-  $r->{vma} = $vma;
-  $r->{file_offset} = $file_offset;
-
-  return $r;
-}
-
-sub ParseTextSectionHeader {
-  # obj_tool_map("otool") is only defined if we're in a Mach-O environment
-  if (defined($obj_tool_map{"otool"})) {
-    my $r = ParseTextSectionHeaderFromOtool(@_);
-    if (defined($r)){
-      return $r;
-    }
-  }
-  # If otool doesn't work, or we don't have it, fall back to objdump
-  return ParseTextSectionHeaderFromObjdump(@_);
-}
-
-# Split /proc/pid/maps dump into a list of libraries
-sub ParseLibraries {
-  return if $main::use_symbol_page;  # We don't need libraries info.
-  my $prog = shift;
-  my $map = shift;
-  my $pcs = shift;
-
-  my $result = [];
-  my $h = "[a-f0-9]+";
-  my $zero_offset = HexExtend("0");
-
-  my $buildvar = "";
-  foreach my $l (split("\n", $map)) {
-    if ($l =~ m/^\s*build=(.*)$/) {
-      $buildvar = $1;
-    }
-
-    my $start;
-    my $finish;
-    my $offset;
-    my $lib;
-    if ($l =~ /^($h)-($h)\s+..x.\s+($h)\s+\S+:\S+\s+\d+\s+(\S+\.(so|dll|dylib|bundle)((\.\d+)+\w*(\.\d+){0,3})?)$/i) {
-      # Full line from /proc/self/maps.  Example:
-      #   40000000-40015000 r-xp 00000000 03:01 12845071   /lib/ld-2.3.2.so
-      $start = HexExtend($1);
-      $finish = HexExtend($2);
-      $offset = HexExtend($3);
-      $lib = $4;
-      $lib =~ s|\\|/|g;     # turn windows-style paths into unix-style paths
-    } elsif ($l =~ /^\s*($h)-($h):\s*(\S+\.so(\.\d+)*)/) {
-      # Cooked line from DumpAddressMap.  Example:
-      #   40000000-40015000: /lib/ld-2.3.2.so
-      $start = HexExtend($1);
-      $finish = HexExtend($2);
-      $offset = $zero_offset;
-      $lib = $3;
-    }
-    # FreeBSD 10.0 virtual memory map /proc/curproc/map as defined in
-    # function procfs_doprocmap (sys/fs/procfs/procfs_map.c)
-    #
-    # Example:
-    # 0x800600000 0x80061a000 26 0 0xfffff800035a0000 r-x 75 33 0x1004 COW NC vnode /libexec/ld-elf.s
-    # o.1 NCH -1
-    elsif ($l =~ /^(0x$h)\s(0x$h)\s\d+\s\d+\s0x$h\sr-x\s\d+\s\d+\s0x\d+\s(COW|NCO)\s(NC|NNC)\svnode\s(\S+\.so(\.\d+)*)/) {
-      $start = HexExtend($1);
-      $finish = HexExtend($2);
-      $offset = $zero_offset;
-      $lib = FindLibrary($5);
-
-    } else {
-      next;
-    }
-
-    # Expand "$build" variable if available
-    $lib =~ s/\$build\b/$buildvar/g;
-
-    $lib = FindLibrary($lib);
-
-    # Check for pre-relocated libraries, which use pre-relocated symbol tables
-    # and thus require adjusting the offset that we'll use to translate
-    # VM addresses into symbol table addresses.
-    # Only do this if we're not going to fetch the symbol table from a
-    # debugging copy of the library.
-    if (!DebuggingLibrary($lib)) {
-      my $text = ParseTextSectionHeader($lib);
-      if (defined($text)) {
-         my $vma_offset = AddressSub($text->{vma}, $text->{file_offset});
-         $offset = AddressAdd($offset, $vma_offset);
-      }
-    }
-
-    if($main::opt_debug) { printf STDERR "$start:$finish ($offset) $lib\n"; }
-    push(@{$result}, [$lib, $start, $finish, $offset]);
-  }
-
-  # Append special entry for additional library (not relocated)
-  if ($main::opt_lib ne "") {
-    my $text = ParseTextSectionHeader($main::opt_lib);
-    if (defined($text)) {
-       my $start = $text->{vma};
-       my $finish = AddressAdd($start, $text->{size});
-
-       push(@{$result}, [$main::opt_lib, $start, $finish, $start]);
-    }
-  }
-
-  # Append special entry for the main program.  This covers
-  # 0..max_pc_value_seen, so that we assume pc values not found in one
-  # of the library ranges will be treated as coming from the main
-  # program binary.
-  my $min_pc = HexExtend("0");
-  my $max_pc = $min_pc;          # find the maximal PC value in any sample
-  foreach my $pc (keys(%{$pcs})) {
-    if (HexExtend($pc) gt $max_pc) { $max_pc = HexExtend($pc); }
-  }
-  push(@{$result}, [$prog, $min_pc, $max_pc, $zero_offset]);
-
-  return $result;
-}
-
-# Add two hex addresses of length $address_length.
-# Run jeprof --test for unit test if this is changed.
-sub AddressAdd {
-  my $addr1 = shift;
-  my $addr2 = shift;
-  my $sum;
-
-  if ($address_length == 8) {
-    # Perl doesn't cope with wraparound arithmetic, so do it explicitly:
-    $sum = (hex($addr1)+hex($addr2)) % (0x10000000 * 16);
-    return sprintf("%08x", $sum);
-
-  } else {
-    # Do the addition in 7-nibble chunks to trivialize carry handling.
-
-    if ($main::opt_debug and $main::opt_test) {
-      print STDERR "AddressAdd $addr1 + $addr2 = ";
-    }
-
-    my $a1 = substr($addr1,-7);
-    $addr1 = substr($addr1,0,-7);
-    my $a2 = substr($addr2,-7);
-    $addr2 = substr($addr2,0,-7);
-    $sum = hex($a1) + hex($a2);
-    my $c = 0;
-    if ($sum > 0xfffffff) {
-      $c = 1;
-      $sum -= 0x10000000;
-    }
-    my $r = sprintf("%07x", $sum);
-
-    $a1 = substr($addr1,-7);
-    $addr1 = substr($addr1,0,-7);
-    $a2 = substr($addr2,-7);
-    $addr2 = substr($addr2,0,-7);
-    $sum = hex($a1) + hex($a2) + $c;
-    $c = 0;
-    if ($sum > 0xfffffff) {
-      $c = 1;
-      $sum -= 0x10000000;
-    }
-    $r = sprintf("%07x", $sum) . $r;
-
-    $sum = hex($addr1) + hex($addr2) + $c;
-    if ($sum > 0xff) { $sum -= 0x100; }
-    $r = sprintf("%02x", $sum) . $r;
-
-    if ($main::opt_debug and $main::opt_test) { print STDERR "$r\n"; }
-
-    return $r;
-  }
-}
-
-
-# Subtract two hex addresses of length $address_length.
-# Run jeprof --test for unit test if this is changed.
-sub AddressSub {
-  my $addr1 = shift;
-  my $addr2 = shift;
-  my $diff;
-
-  if ($address_length == 8) {
-    # Perl doesn't cope with wraparound arithmetic, so do it explicitly:
-    $diff = (hex($addr1)-hex($addr2)) % (0x10000000 * 16);
-    return sprintf("%08x", $diff);
-
-  } else {
-    # Do the addition in 7-nibble chunks to trivialize borrow handling.
-    # if ($main::opt_debug) { print STDERR "AddressSub $addr1 - $addr2 = "; }
-
-    my $a1 = hex(substr($addr1,-7));
-    $addr1 = substr($addr1,0,-7);
-    my $a2 = hex(substr($addr2,-7));
-    $addr2 = substr($addr2,0,-7);
-    my $b = 0;
-    if ($a2 > $a1) {
-      $b = 1;
-      $a1 += 0x10000000;
-    }
-    $diff = $a1 - $a2;
-    my $r = sprintf("%07x", $diff);
-
-    $a1 = hex(substr($addr1,-7));
-    $addr1 = substr($addr1,0,-7);
-    $a2 = hex(substr($addr2,-7)) + $b;
-    $addr2 = substr($addr2,0,-7);
-    $b = 0;
-    if ($a2 > $a1) {
-      $b = 1;
-      $a1 += 0x10000000;
-    }
-    $diff = $a1 - $a2;
-    $r = sprintf("%07x", $diff) . $r;
-
-    $a1 = hex($addr1);
-    $a2 = hex($addr2) + $b;
-    if ($a2 > $a1) { $a1 += 0x100; }
-    $diff = $a1 - $a2;
-    $r = sprintf("%02x", $diff) . $r;
-
-    # if ($main::opt_debug) { print STDERR "$r\n"; }
-
-    return $r;
-  }
-}
-
-# Increment a hex addresses of length $address_length.
-# Run jeprof --test for unit test if this is changed.
-sub AddressInc {
-  my $addr = shift;
-  my $sum;
-
-  if ($address_length == 8) {
-    # Perl doesn't cope with wraparound arithmetic, so do it explicitly:
-    $sum = (hex($addr)+1) % (0x10000000 * 16);
-    return sprintf("%08x", $sum);
-
-  } else {
-    # Do the addition in 7-nibble chunks to trivialize carry handling.
-    # We are always doing this to step through the addresses in a function,
-    # and will almost never overflow the first chunk, so we check for this
-    # case and exit early.
-
-    # if ($main::opt_debug) { print STDERR "AddressInc $addr1 = "; }
-
-    my $a1 = substr($addr,-7);
-    $addr = substr($addr,0,-7);
-    $sum = hex($a1) + 1;
-    my $r = sprintf("%07x", $sum);
-    if ($sum <= 0xfffffff) {
-      $r = $addr . $r;
-      # if ($main::opt_debug) { print STDERR "$r\n"; }
-      return HexExtend($r);
-    } else {
-      $r = "0000000";
-    }
-
-    $a1 = substr($addr,-7);
-    $addr = substr($addr,0,-7);
-    $sum = hex($a1) + 1;
-    $r = sprintf("%07x", $sum) . $r;
-    if ($sum <= 0xfffffff) {
-      $r = $addr . $r;
-      # if ($main::opt_debug) { print STDERR "$r\n"; }
-      return HexExtend($r);
-    } else {
-      $r = "00000000000000";
-    }
-
-    $sum = hex($addr) + 1;
-    if ($sum > 0xff) { $sum -= 0x100; }
-    $r = sprintf("%02x", $sum) . $r;
-
-    # if ($main::opt_debug) { print STDERR "$r\n"; }
-    return $r;
-  }
-}
-
-# Extract symbols for all PC values found in profile
-sub ExtractSymbols {
-  my $libs = shift;
-  my $pcset = shift;
-
-  my $symbols = {};
-
-  # Map each PC value to the containing library.  To make this faster,
-  # we sort libraries by their starting pc value (highest first), and
-  # advance through the libraries as we advance the pc.  Sometimes the
-  # addresses of libraries may overlap with the addresses of the main
-  # binary, so to make sure the libraries 'win', we iterate over the
-  # libraries in reverse order (which assumes the binary doesn't start
-  # in the middle of a library, which seems a fair assumption).
-  my @pcs = (sort { $a cmp $b } keys(%{$pcset}));  # pcset is 0-extended strings
-  foreach my $lib (sort {$b->[1] cmp $a->[1]} @{$libs}) {
-    my $libname = $lib->[0];
-    my $start = $lib->[1];
-    my $finish = $lib->[2];
-    my $offset = $lib->[3];
-
-    # Use debug library if it exists
-    my $debug_libname = DebuggingLibrary($libname);
-    if ($debug_libname) {
-        $libname = $debug_libname;
-    }
-
-    # Get list of pcs that belong in this library.
-    my $contained = [];
-    my ($start_pc_index, $finish_pc_index);
-    # Find smallest finish_pc_index such that $finish < $pc[$finish_pc_index].
-    for ($finish_pc_index = $#pcs + 1; $finish_pc_index > 0;
-         $finish_pc_index--) {
-      last if $pcs[$finish_pc_index - 1] le $finish;
-    }
-    # Find smallest start_pc_index such that $start <= $pc[$start_pc_index].
-    for ($start_pc_index = $finish_pc_index; $start_pc_index > 0;
-         $start_pc_index--) {
-      last if $pcs[$start_pc_index - 1] lt $start;
-    }
-    # This keeps PC values higher than $pc[$finish_pc_index] in @pcs,
-    # in case there are overlaps in libraries and the main binary.
-    @{$contained} = splice(@pcs, $start_pc_index,
-                           $finish_pc_index - $start_pc_index);
-    # Map to symbols
-    MapToSymbols($libname, AddressSub($start, $offset), $contained, $symbols);
-  }
-
-  return $symbols;
-}
-
-# Map list of PC values to symbols for a given image
-sub MapToSymbols {
-  my $image = shift;
-  my $offset = shift;
-  my $pclist = shift;
-  my $symbols = shift;
-
-  my $debug = 0;
-
-  # Ignore empty binaries
-  if ($#{$pclist} < 0) { return; }
-
-  # Figure out the addr2line command to use
-  my $addr2line = $obj_tool_map{"addr2line"};
-  my $cmd = ShellEscape($addr2line, "-f", "-C", "-e", $image);
-  if (exists $obj_tool_map{"addr2line_pdb"}) {
-    $addr2line = $obj_tool_map{"addr2line_pdb"};
-    $cmd = ShellEscape($addr2line, "--demangle", "-f", "-C", "-e", $image);
-  }
-
-  # If "addr2line" isn't installed on the system at all, just use
-  # nm to get what info we can (function names, but not line numbers).
-  if (system(ShellEscape($addr2line, "--help") . " >$dev_null 2>&1") != 0) {
-    MapSymbolsWithNM($image, $offset, $pclist, $symbols);
-    return;
-  }
-
-  # "addr2line -i" can produce a variable number of lines per input
-  # address, with no separator that allows us to tell when data for
-  # the next address starts.  So we find the address for a special
-  # symbol (_fini) and interleave this address between all real
-  # addresses passed to addr2line.  The name of this special symbol
-  # can then be used as a separator.
-  $sep_address = undef;  # May be filled in by MapSymbolsWithNM()
-  my $nm_symbols = {};
-  MapSymbolsWithNM($image, $offset, $pclist, $nm_symbols);
-  if (defined($sep_address)) {
-    # Only add " -i" to addr2line if the binary supports it.
-    # addr2line --help returns 0, but not if it sees an unknown flag first.
-    if (system("$cmd -i --help >$dev_null 2>&1") == 0) {
-      $cmd .= " -i";
-    } else {
-      $sep_address = undef;   # no need for sep_address if we don't support -i
-    }
-  }
-
-  # Make file with all PC values with intervening 'sep_address' so
-  # that we can reliably detect the end of inlined function list
-  open(ADDRESSES, ">$main::tmpfile_sym") || error("$main::tmpfile_sym: $!\n");
-  if ($debug) { print("---- $image ---\n"); }
-  for (my $i = 0; $i <= $#{$pclist}; $i++) {
-    # addr2line always reads hex addresses, and does not need '0x' prefix.
-    if ($debug) { printf STDERR ("%s\n", $pclist->[$i]); }
-    printf ADDRESSES ("%s\n", AddressSub($pclist->[$i], $offset));
-    if (defined($sep_address)) {
-      printf ADDRESSES ("%s\n", $sep_address);
-    }
-  }
-  close(ADDRESSES);
-  if ($debug) {
-    print("----\n");
-    system("cat", $main::tmpfile_sym);
-    print("----\n");
-    system("$cmd < " . ShellEscape($main::tmpfile_sym));
-    print("----\n");
-  }
-
-  open(SYMBOLS, "$cmd <" . ShellEscape($main::tmpfile_sym) . " |")
-      || error("$cmd: $!\n");
-  my $count = 0;   # Index in pclist
-  while (<SYMBOLS>) {
-    # Read fullfunction and filelineinfo from next pair of lines
-    s/\r?\n$//g;
-    my $fullfunction = $_;
-    $_ = <SYMBOLS>;
-    s/\r?\n$//g;
-    my $filelinenum = $_;
-
-    if (defined($sep_address) && $fullfunction eq $sep_symbol) {
-      # Terminating marker for data for this address
-      $count++;
-      next;
-    }
-
-    $filelinenum =~ s|\\|/|g; # turn windows-style paths into unix-style paths
-
-    my $pcstr = $pclist->[$count];
-    my $function = ShortFunctionName($fullfunction);
-    my $nms = $nm_symbols->{$pcstr};
-    if (defined($nms)) {
-      if ($fullfunction eq '??') {
-        # nm found a symbol for us.
-        $function = $nms->[0];
-        $fullfunction = $nms->[2];
-      } else {
-	# MapSymbolsWithNM tags each routine with its starting address,
-	# useful in case the image has multiple occurrences of this
-	# routine.  (It uses a syntax that resembles template paramters,
-	# that are automatically stripped out by ShortFunctionName().)
-	# addr2line does not provide the same information.  So we check
-	# if nm disambiguated our symbol, and if so take the annotated
-	# (nm) version of the routine-name.  TODO(csilvers): this won't
-	# catch overloaded, inlined symbols, which nm doesn't see.
-	# Better would be to do a check similar to nm's, in this fn.
-	if ($nms->[2] =~ m/^\Q$function\E/) {  # sanity check it's the right fn
-	  $function = $nms->[0];
-	  $fullfunction = $nms->[2];
-	}
-      }
-    }
-
-    # Prepend to accumulated symbols for pcstr
-    # (so that caller comes before callee)
-    my $sym = $symbols->{$pcstr};
-    if (!defined($sym)) {
-      $sym = [];
-      $symbols->{$pcstr} = $sym;
-    }
-    unshift(@{$sym}, $function, $filelinenum, $fullfunction);
-    if ($debug) { printf STDERR ("%s => [%s]\n", $pcstr, join(" ", @{$sym})); }
-    if (!defined($sep_address)) {
-      # Inlining is off, so this entry ends immediately
-      $count++;
-    }
-  }
-  close(SYMBOLS);
-}
-
-# Use nm to map the list of referenced PCs to symbols.  Return true iff we
-# are able to read procedure information via nm.
-sub MapSymbolsWithNM {
-  my $image = shift;
-  my $offset = shift;
-  my $pclist = shift;
-  my $symbols = shift;
-
-  # Get nm output sorted by increasing address
-  my $symbol_table = GetProcedureBoundaries($image, ".");
-  if (!%{$symbol_table}) {
-    return 0;
-  }
-  # Start addresses are already the right length (8 or 16 hex digits).
-  my @names = sort { $symbol_table->{$a}->[0] cmp $symbol_table->{$b}->[0] }
-    keys(%{$symbol_table});
-
-  if ($#names < 0) {
-    # No symbols: just use addresses
-    foreach my $pc (@{$pclist}) {
-      my $pcstr = "0x" . $pc;
-      $symbols->{$pc} = [$pcstr, "?", $pcstr];
-    }
-    return 0;
-  }
-
-  # Sort addresses so we can do a join against nm output
-  my $index = 0;
-  my $fullname = $names[0];
-  my $name = ShortFunctionName($fullname);
-  foreach my $pc (sort { $a cmp $b } @{$pclist}) {
-    # Adjust for mapped offset
-    my $mpc = AddressSub($pc, $offset);
-    while (($index < $#names) && ($mpc ge $symbol_table->{$fullname}->[1])){
-      $index++;
-      $fullname = $names[$index];
-      $name = ShortFunctionName($fullname);
-    }
-    if ($mpc lt $symbol_table->{$fullname}->[1]) {
-      $symbols->{$pc} = [$name, "?", $fullname];
-    } else {
-      my $pcstr = "0x" . $pc;
-      $symbols->{$pc} = [$pcstr, "?", $pcstr];
-    }
-  }
-  return 1;
-}
-
-sub ShortFunctionName {
-  my $function = shift;
-  while ($function =~ s/\([^()]*\)(\s*const)?//g) { }   # Argument types
-  while ($function =~ s/<[^<>]*>//g)  { }    # Remove template arguments
-  $function =~ s/^.*\s+(\w+::)/$1/;          # Remove leading type
-  return $function;
-}
-
-# Trim overly long symbols found in disassembler output
-sub CleanDisassembly {
-  my $d = shift;
-  while ($d =~ s/\([^()%]*\)(\s*const)?//g) { } # Argument types, not (%rax)
-  while ($d =~ s/(\w+)<[^<>]*>/$1/g)  { }       # Remove template arguments
-  return $d;
-}
-
-# Clean file name for display
-sub CleanFileName {
-  my ($f) = @_;
-  $f =~ s|^/proc/self/cwd/||;
-  $f =~ s|^\./||;
-  return $f;
-}
-
-# Make address relative to section and clean up for display
-sub UnparseAddress {
-  my ($offset, $address) = @_;
-  $address = AddressSub($address, $offset);
-  $address =~ s/^0x//;
-  $address =~ s/^0*//;
-  return $address;
-}
-
-##### Miscellaneous #####
-
-# Find the right versions of the above object tools to use.  The
-# argument is the program file being analyzed, and should be an ELF
-# 32-bit or ELF 64-bit executable file.  The location of the tools
-# is determined by considering the following options in this order:
-#   1) --tools option, if set
-#   2) JEPROF_TOOLS environment variable, if set
-#   3) the environment
-sub ConfigureObjTools {
-  my $prog_file = shift;
-
-  # Check for the existence of $prog_file because /usr/bin/file does not
-  # predictably return error status in prod.
-  (-e $prog_file)  || error("$prog_file does not exist.\n");
-
-  my $file_type = undef;
-  if (-e "/usr/bin/file") {
-    # Follow symlinks (at least for systems where "file" supports that).
-    my $escaped_prog_file = ShellEscape($prog_file);
-    $file_type = `/usr/bin/file -L $escaped_prog_file 2>$dev_null ||
-                  /usr/bin/file $escaped_prog_file`;
-  } elsif ($^O == "MSWin32") {
-    $file_type = "MS Windows";
-  } else {
-    print STDERR "WARNING: Can't determine the file type of $prog_file";
-  }
-
-  if ($file_type =~ /64-bit/) {
-    # Change $address_length to 16 if the program file is ELF 64-bit.
-    # We can't detect this from many (most?) heap or lock contention
-    # profiles, since the actual addresses referenced are generally in low
-    # memory even for 64-bit programs.
-    $address_length = 16;
-  }
-
-  if ($file_type =~ /MS Windows/) {
-    # For windows, we provide a version of nm and addr2line as part of
-    # the opensource release, which is capable of parsing
-    # Windows-style PDB executables.  It should live in the path, or
-    # in the same directory as jeprof.
-    $obj_tool_map{"nm_pdb"} = "nm-pdb";
-    $obj_tool_map{"addr2line_pdb"} = "addr2line-pdb";
-  }
-
-  if ($file_type =~ /Mach-O/) {
-    # OS X uses otool to examine Mach-O files, rather than objdump.
-    $obj_tool_map{"otool"} = "otool";
-    $obj_tool_map{"addr2line"} = "false";  # no addr2line
-    $obj_tool_map{"objdump"} = "false";  # no objdump
-  }
-
-  # Go fill in %obj_tool_map with the pathnames to use:
-  foreach my $tool (keys %obj_tool_map) {
-    $obj_tool_map{$tool} = ConfigureTool($obj_tool_map{$tool});
-  }
-}
-
-# Returns the path of a caller-specified object tool.  If --tools or
-# JEPROF_TOOLS are specified, then returns the full path to the tool
-# with that prefix.  Otherwise, returns the path unmodified (which
-# means we will look for it on PATH).
-sub ConfigureTool {
-  my $tool = shift;
-  my $path;
-
-  # --tools (or $JEPROF_TOOLS) is a comma separated list, where each
-  # item is either a) a pathname prefix, or b) a map of the form
-  # <tool>:<path>.  First we look for an entry of type (b) for our
-  # tool.  If one is found, we use it.  Otherwise, we consider all the
-  # pathname prefixes in turn, until one yields an existing file.  If
-  # none does, we use a default path.
-  my $tools = $main::opt_tools || $ENV{"JEPROF_TOOLS"} || "";
-  if ($tools =~ m/(,|^)\Q$tool\E:([^,]*)/) {
-    $path = $2;
-    # TODO(csilvers): sanity-check that $path exists?  Hard if it's relative.
-  } elsif ($tools ne '') {
-    foreach my $prefix (split(',', $tools)) {
-      next if ($prefix =~ /:/);    # ignore "tool:fullpath" entries in the list
-      if (-x $prefix . $tool) {
-        $path = $prefix . $tool;
-        last;
-      }
-    }
-    if (!$path) {
-      error("No '$tool' found with prefix specified by " .
-            "--tools (or \$JEPROF_TOOLS) '$tools'\n");
-    }
-  } else {
-    # ... otherwise use the version that exists in the same directory as
-    # jeprof.  If there's nothing there, use $PATH.
-    $0 =~ m,[^/]*$,;     # this is everything after the last slash
-    my $dirname = $`;    # this is everything up to and including the last slash
-    if (-x "$dirname$tool") {
-      $path = "$dirname$tool";
-    } else {
-      $path = $tool;
-    }
-  }
-  if ($main::opt_debug) { print STDERR "Using '$path' for '$tool'.\n"; }
-  return $path;
-}
-
-sub ShellEscape {
-  my @escaped_words = ();
-  foreach my $word (@_) {
-    my $escaped_word = $word;
-    if ($word =~ m![^a-zA-Z0-9/.,_=-]!) {  # check for anything not in whitelist
-      $escaped_word =~ s/'/'\\''/;
-      $escaped_word = "'$escaped_word'";
-    }
-    push(@escaped_words, $escaped_word);
-  }
-  return join(" ", @escaped_words);
-}
-
-sub cleanup {
-  unlink($main::tmpfile_sym);
-  unlink(keys %main::tempnames);
-
-  # We leave any collected profiles in $HOME/jeprof in case the user wants
-  # to look at them later.  We print a message informing them of this.
-  if ((scalar(@main::profile_files) > 0) &&
-      defined($main::collected_profile)) {
-    if (scalar(@main::profile_files) == 1) {
-      print STDERR "Dynamically gathered profile is in $main::collected_profile\n";
-    }
-    print STDERR "If you want to investigate this profile further, you can do:\n";
-    print STDERR "\n";
-    print STDERR "  jeprof \\\n";
-    print STDERR "    $main::prog \\\n";
-    print STDERR "    $main::collected_profile\n";
-    print STDERR "\n";
-  }
-}
-
-sub sighandler {
-  cleanup();
-  exit(1);
-}
-
-sub error {
-  my $msg = shift;
-  print STDERR $msg;
-  cleanup();
-  exit(1);
-}
-
-
-# Run $nm_command and get all the resulting procedure boundaries whose
-# names match "$regexp" and returns them in a hashtable mapping from
-# procedure name to a two-element vector of [start address, end address]
-sub GetProcedureBoundariesViaNm {
-  my $escaped_nm_command = shift;    # shell-escaped
-  my $regexp = shift;
-
-  my $symbol_table = {};
-  open(NM, "$escaped_nm_command |") || error("$escaped_nm_command: $!\n");
-  my $last_start = "0";
-  my $routine = "";
-  while (<NM>) {
-    s/\r//g;         # turn windows-looking lines into unix-looking lines
-    if (m/^\s*([0-9a-f]+) (.) (..*)/) {
-      my $start_val = $1;
-      my $type = $2;
-      my $this_routine = $3;
-
-      # It's possible for two symbols to share the same address, if
-      # one is a zero-length variable (like __start_google_malloc) or
-      # one symbol is a weak alias to another (like __libc_malloc).
-      # In such cases, we want to ignore all values except for the
-      # actual symbol, which in nm-speak has type "T".  The logic
-      # below does this, though it's a bit tricky: what happens when
-      # we have a series of lines with the same address, is the first
-      # one gets queued up to be processed.  However, it won't
-      # *actually* be processed until later, when we read a line with
-      # a different address.  That means that as long as we're reading
-      # lines with the same address, we have a chance to replace that
-      # item in the queue, which we do whenever we see a 'T' entry --
-      # that is, a line with type 'T'.  If we never see a 'T' entry,
-      # we'll just go ahead and process the first entry (which never
-      # got touched in the queue), and ignore the others.
-      if ($start_val eq $last_start && $type =~ /t/i) {
-        # We are the 'T' symbol at this address, replace previous symbol.
-        $routine = $this_routine;
-        next;
-      } elsif ($start_val eq $last_start) {
-        # We're not the 'T' symbol at this address, so ignore us.
-        next;
-      }
-
-      if ($this_routine eq $sep_symbol) {
-        $sep_address = HexExtend($start_val);
-      }
-
-      # Tag this routine with the starting address in case the image
-      # has multiple occurrences of this routine.  We use a syntax
-      # that resembles template parameters that are automatically
-      # stripped out by ShortFunctionName()
-      $this_routine .= "<$start_val>";
-
-      if (defined($routine) && $routine =~ m/$regexp/) {
-        $symbol_table->{$routine} = [HexExtend($last_start),
-                                     HexExtend($start_val)];
-      }
-      $last_start = $start_val;
-      $routine = $this_routine;
-    } elsif (m/^Loaded image name: (.+)/) {
-      # The win32 nm workalike emits information about the binary it is using.
-      if ($main::opt_debug) { print STDERR "Using Image $1\n"; }
-    } elsif (m/^PDB file name: (.+)/) {
-      # The win32 nm workalike emits information about the pdb it is using.
-      if ($main::opt_debug) { print STDERR "Using PDB $1\n"; }
-    }
-  }
-  close(NM);
-  # Handle the last line in the nm output.  Unfortunately, we don't know
-  # how big this last symbol is, because we don't know how big the file
-  # is.  For now, we just give it a size of 0.
-  # TODO(csilvers): do better here.
-  if (defined($routine) && $routine =~ m/$regexp/) {
-    $symbol_table->{$routine} = [HexExtend($last_start),
-                                 HexExtend($last_start)];
-  }
-  return $symbol_table;
-}
-
-# Gets the procedure boundaries for all routines in "$image" whose names
-# match "$regexp" and returns them in a hashtable mapping from procedure
-# name to a two-element vector of [start address, end address].
-# Will return an empty map if nm is not installed or not working properly.
-sub GetProcedureBoundaries {
-  my $image = shift;
-  my $regexp = shift;
-
-  # If $image doesn't start with /, then put ./ in front of it.  This works
-  # around an obnoxious bug in our probing of nm -f behavior.
-  # "nm -f $image" is supposed to fail on GNU nm, but if:
-  #
-  # a. $image starts with [BbSsPp] (for example, bin/foo/bar), AND
-  # b. you have a.out in your current directory (a not uncommon occurence)
-  #
-  # then "nm -f $image" succeeds because -f only looks at the first letter of
-  # the argument, which looks valid because it's [BbSsPp], and then since
-  # there's no image provided, it looks for a.out and finds it.
-  #
-  # This regex makes sure that $image starts with . or /, forcing the -f
-  # parsing to fail since . and / are not valid formats.
-  $image =~ s#^[^/]#./$&#;
-
-  # For libc libraries, the copy in /usr/lib/debug contains debugging symbols
-  my $debugging = DebuggingLibrary($image);
-  if ($debugging) {
-    $image = $debugging;
-  }
-
-  my $nm = $obj_tool_map{"nm"};
-  my $cppfilt = $obj_tool_map{"c++filt"};
-
-  # nm can fail for two reasons: 1) $image isn't a debug library; 2) nm
-  # binary doesn't support --demangle.  In addition, for OS X we need
-  # to use the -f flag to get 'flat' nm output (otherwise we don't sort
-  # properly and get incorrect results).  Unfortunately, GNU nm uses -f
-  # in an incompatible way.  So first we test whether our nm supports
-  # --demangle and -f.
-  my $demangle_flag = "";
-  my $cppfilt_flag = "";
-  my $to_devnull = ">$dev_null 2>&1";
-  if (system(ShellEscape($nm, "--demangle", "image") . $to_devnull) == 0) {
-    # In this mode, we do "nm --demangle <foo>"
-    $demangle_flag = "--demangle";
-    $cppfilt_flag = "";
-  } elsif (system(ShellEscape($cppfilt, $image) . $to_devnull) == 0) {
-    # In this mode, we do "nm <foo> | c++filt"
-    $cppfilt_flag = " | " . ShellEscape($cppfilt);
-  };
-  my $flatten_flag = "";
-  if (system(ShellEscape($nm, "-f", $image) . $to_devnull) == 0) {
-    $flatten_flag = "-f";
-  }
-
-  # Finally, in the case $imagie isn't a debug library, we try again with
-  # -D to at least get *exported* symbols.  If we can't use --demangle,
-  # we use c++filt instead, if it exists on this system.
-  my @nm_commands = (ShellEscape($nm, "-n", $flatten_flag, $demangle_flag,
-                                 $image) . " 2>$dev_null $cppfilt_flag",
-                     ShellEscape($nm, "-D", "-n", $flatten_flag, $demangle_flag,
-                                 $image) . " 2>$dev_null $cppfilt_flag",
-                     # 6nm is for Go binaries
-                     ShellEscape("6nm", "$image") . " 2>$dev_null | sort",
-                     );
-
-  # If the executable is an MS Windows PDB-format executable, we'll
-  # have set up obj_tool_map("nm_pdb").  In this case, we actually
-  # want to use both unix nm and windows-specific nm_pdb, since
-  # PDB-format executables can apparently include dwarf .o files.
-  if (exists $obj_tool_map{"nm_pdb"}) {
-    push(@nm_commands,
-         ShellEscape($obj_tool_map{"nm_pdb"}, "--demangle", $image)
-         . " 2>$dev_null");
-  }
-
-  foreach my $nm_command (@nm_commands) {
-    my $symbol_table = GetProcedureBoundariesViaNm($nm_command, $regexp);
-    return $symbol_table if (%{$symbol_table});
-  }
-  my $symbol_table = {};
-  return $symbol_table;
-}
-
-
-# The test vectors for AddressAdd/Sub/Inc are 8-16-nibble hex strings.
-# To make them more readable, we add underscores at interesting places.
-# This routine removes the underscores, producing the canonical representation
-# used by jeprof to represent addresses, particularly in the tested routines.
-sub CanonicalHex {
-  my $arg = shift;
-  return join '', (split '_',$arg);
-}
-
-
-# Unit test for AddressAdd:
-sub AddressAddUnitTest {
-  my $test_data_8 = shift;
-  my $test_data_16 = shift;
-  my $error_count = 0;
-  my $fail_count = 0;
-  my $pass_count = 0;
-  # print STDERR "AddressAddUnitTest: ", 1+$#{$test_data_8}, " tests\n";
-
-  # First a few 8-nibble addresses.  Note that this implementation uses
-  # plain old arithmetic, so a quick sanity check along with verifying what
-  # happens to overflow (we want it to wrap):
-  $address_length = 8;
-  foreach my $row (@{$test_data_8}) {
-    if ($main::opt_debug and $main::opt_test) { print STDERR "@{$row}\n"; }
-    my $sum = AddressAdd ($row->[0], $row->[1]);
-    if ($sum ne $row->[2]) {
-      printf STDERR "ERROR: %s != %s + %s = %s\n", $sum,
-             $row->[0], $row->[1], $row->[2];
-      ++$fail_count;
-    } else {
-      ++$pass_count;
-    }
-  }
-  printf STDERR "AddressAdd 32-bit tests: %d passes, %d failures\n",
-         $pass_count, $fail_count;
-  $error_count = $fail_count;
-  $fail_count = 0;
-  $pass_count = 0;
-
-  # Now 16-nibble addresses.
-  $address_length = 16;
-  foreach my $row (@{$test_data_16}) {
-    if ($main::opt_debug and $main::opt_test) { print STDERR "@{$row}\n"; }
-    my $sum = AddressAdd (CanonicalHex($row->[0]), CanonicalHex($row->[1]));
-    my $expected = join '', (split '_',$row->[2]);
-    if ($sum ne CanonicalHex($row->[2])) {
-      printf STDERR "ERROR: %s != %s + %s = %s\n", $sum,
-             $row->[0], $row->[1], $row->[2];
-      ++$fail_count;
-    } else {
-      ++$pass_count;
-    }
-  }
-  printf STDERR "AddressAdd 64-bit tests: %d passes, %d failures\n",
-         $pass_count, $fail_count;
-  $error_count += $fail_count;
-
-  return $error_count;
-}
-
-
-# Unit test for AddressSub:
-sub AddressSubUnitTest {
-  my $test_data_8 = shift;
-  my $test_data_16 = shift;
-  my $error_count = 0;
-  my $fail_count = 0;
-  my $pass_count = 0;
-  # print STDERR "AddressSubUnitTest: ", 1+$#{$test_data_8}, " tests\n";
-
-  # First a few 8-nibble addresses.  Note that this implementation uses
-  # plain old arithmetic, so a quick sanity check along with verifying what
-  # happens to overflow (we want it to wrap):
-  $address_length = 8;
-  foreach my $row (@{$test_data_8}) {
-    if ($main::opt_debug and $main::opt_test) { print STDERR "@{$row}\n"; }
-    my $sum = AddressSub ($row->[0], $row->[1]);
-    if ($sum ne $row->[3]) {
-      printf STDERR "ERROR: %s != %s - %s = %s\n", $sum,
-             $row->[0], $row->[1], $row->[3];
-      ++$fail_count;
-    } else {
-      ++$pass_count;
-    }
-  }
-  printf STDERR "AddressSub 32-bit tests: %d passes, %d failures\n",
-         $pass_count, $fail_count;
-  $error_count = $fail_count;
-  $fail_count = 0;
-  $pass_count = 0;
-
-  # Now 16-nibble addresses.
-  $address_length = 16;
-  foreach my $row (@{$test_data_16}) {
-    if ($main::opt_debug and $main::opt_test) { print STDERR "@{$row}\n"; }
-    my $sum = AddressSub (CanonicalHex($row->[0]), CanonicalHex($row->[1]));
-    if ($sum ne CanonicalHex($row->[3])) {
-      printf STDERR "ERROR: %s != %s - %s = %s\n", $sum,
-             $row->[0], $row->[1], $row->[3];
-      ++$fail_count;
-    } else {
-      ++$pass_count;
-    }
-  }
-  printf STDERR "AddressSub 64-bit tests: %d passes, %d failures\n",
-         $pass_count, $fail_count;
-  $error_count += $fail_count;
-
-  return $error_count;
-}
-
-
-# Unit test for AddressInc:
-sub AddressIncUnitTest {
-  my $test_data_8 = shift;
-  my $test_data_16 = shift;
-  my $error_count = 0;
-  my $fail_count = 0;
-  my $pass_count = 0;
-  # print STDERR "AddressIncUnitTest: ", 1+$#{$test_data_8}, " tests\n";
-
-  # First a few 8-nibble addresses.  Note that this implementation uses
-  # plain old arithmetic, so a quick sanity check along with verifying what
-  # happens to overflow (we want it to wrap):
-  $address_length = 8;
-  foreach my $row (@{$test_data_8}) {
-    if ($main::opt_debug and $main::opt_test) { print STDERR "@{$row}\n"; }
-    my $sum = AddressInc ($row->[0]);
-    if ($sum ne $row->[4]) {
-      printf STDERR "ERROR: %s != %s + 1 = %s\n", $sum,
-             $row->[0], $row->[4];
-      ++$fail_count;
-    } else {
-      ++$pass_count;
-    }
-  }
-  printf STDERR "AddressInc 32-bit tests: %d passes, %d failures\n",
-         $pass_count, $fail_count;
-  $error_count = $fail_count;
-  $fail_count = 0;
-  $pass_count = 0;
-
-  # Now 16-nibble addresses.
-  $address_length = 16;
-  foreach my $row (@{$test_data_16}) {
-    if ($main::opt_debug and $main::opt_test) { print STDERR "@{$row}\n"; }
-    my $sum = AddressInc (CanonicalHex($row->[0]));
-    if ($sum ne CanonicalHex($row->[4])) {
-      printf STDERR "ERROR: %s != %s + 1 = %s\n", $sum,
-             $row->[0], $row->[4];
-      ++$fail_count;
-    } else {
-      ++$pass_count;
-    }
-  }
-  printf STDERR "AddressInc 64-bit tests: %d passes, %d failures\n",
-         $pass_count, $fail_count;
-  $error_count += $fail_count;
-
-  return $error_count;
-}
-
-
-# Driver for unit tests.
-# Currently just the address add/subtract/increment routines for 64-bit.
-sub RunUnitTests {
-  my $error_count = 0;
-
-  # This is a list of tuples [a, b, a+b, a-b, a+1]
-  my $unit_test_data_8 = [
-    [qw(aaaaaaaa 50505050 fafafafa 5a5a5a5a aaaaaaab)],
-    [qw(50505050 aaaaaaaa fafafafa a5a5a5a6 50505051)],
-    [qw(ffffffff aaaaaaaa aaaaaaa9 55555555 00000000)],
-    [qw(00000001 ffffffff 00000000 00000002 00000002)],
-    [qw(00000001 fffffff0 fffffff1 00000011 00000002)],
-  ];
-  my $unit_test_data_16 = [
-    # The implementation handles data in 7-nibble chunks, so those are the
-    # interesting boundaries.
-    [qw(aaaaaaaa 50505050
-        00_000000f_afafafa 00_0000005_a5a5a5a 00_000000a_aaaaaab)],
-    [qw(50505050 aaaaaaaa
-        00_000000f_afafafa ff_ffffffa_5a5a5a6 00_0000005_0505051)],
-    [qw(ffffffff aaaaaaaa
-        00_000001a_aaaaaa9 00_0000005_5555555 00_0000010_0000000)],
-    [qw(00000001 ffffffff
-        00_0000010_0000000 ff_ffffff0_0000002 00_0000000_0000002)],
-    [qw(00000001 fffffff0
-        00_000000f_ffffff1 ff_ffffff0_0000011 00_0000000_0000002)],
-
-    [qw(00_a00000a_aaaaaaa 50505050
-        00_a00000f_afafafa 00_a000005_a5a5a5a 00_a00000a_aaaaaab)],
-    [qw(0f_fff0005_0505050 aaaaaaaa
-        0f_fff000f_afafafa 0f_ffefffa_5a5a5a6 0f_fff0005_0505051)],
-    [qw(00_000000f_fffffff 01_800000a_aaaaaaa
-        01_800001a_aaaaaa9 fe_8000005_5555555 00_0000010_0000000)],
-    [qw(00_0000000_0000001 ff_fffffff_fffffff
-        00_0000000_0000000 00_0000000_0000002 00_0000000_0000002)],
-    [qw(00_0000000_0000001 ff_fffffff_ffffff0
-        ff_fffffff_ffffff1 00_0000000_0000011 00_0000000_0000002)],
-  ];
-
-  $error_count += AddressAddUnitTest($unit_test_data_8, $unit_test_data_16);
-  $error_count += AddressSubUnitTest($unit_test_data_8, $unit_test_data_16);
-  $error_count += AddressIncUnitTest($unit_test_data_8, $unit_test_data_16);
-  if ($error_count > 0) {
-    print STDERR $error_count, " errors: FAILED\n";
-  } else {
-    print STDERR "PASS\n";
-  }
-  exit ($error_count);
-}