Add m-esr52 at 52.6.0

1 files changed, 284 insertions, 0 deletions

diff --git a/widget/cocoa/nsCocoaDebugUtils.mm b/widget/cocoa/nsCocoaDebugUtils.mm
new file mode 100644
index 000000000..35896dc40
--- /dev/null
+++ b/widget/cocoa/nsCocoaDebugUtils.mm
@@ -0,0 +1,284 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsCocoaDebugUtils.h"
+
+#include <pthread.h>
+#include <libproc.h>
+#include <stdarg.h>
+#include <time.h>
+#include <execinfo.h>
+#include <asl.h>
+
+static char gProcPath[PROC_PIDPATHINFO_MAXSIZE] = {0};
+static char gBundleID[MAXPATHLEN] = {0};
+
+static void MaybeGetPathAndID()
+{
+  if (!gProcPath[0]) {
+    proc_pidpath(getpid(), gProcPath, sizeof(gProcPath));
+  }
+  if (!gBundleID[0]) {
+    // Apple's CFLog() uses "com.apple.console" (in its call to asl_open()) if
+    // it can't find the bundle id.
+    CFStringRef bundleID = NULL;
+    CFBundleRef mainBundle = CFBundleGetMainBundle();
+    if (mainBundle) {
+      bundleID = CFBundleGetIdentifier(mainBundle);
+    }
+    if (!bundleID) {
+      strcpy(gBundleID, "com.apple.console");
+    } else {
+      CFStringGetCString(bundleID, gBundleID, sizeof(gBundleID),
+                         kCFStringEncodingUTF8);
+    }
+  }
+}
+
+static void GetThreadName(char* aName, size_t aSize)
+{
+  pthread_getname_np(pthread_self(), aName, aSize);
+}
+
+void
+nsCocoaDebugUtils::DebugLog(const char* aFormat, ...)
+{
+  va_list args;
+  va_start(args, aFormat);
+  CFStringRef formatCFSTR =
+    CFStringCreateWithCString(kCFAllocatorDefault, aFormat,
+                              kCFStringEncodingUTF8);
+  DebugLogV(true, formatCFSTR, args);
+  CFRelease(formatCFSTR);
+  va_end(args);
+}
+
+void
+nsCocoaDebugUtils::DebugLogInt(bool aDecorate, const char* aFormat, ...)
+{
+  va_list args;
+  va_start(args, aFormat);
+  CFStringRef formatCFSTR =
+    CFStringCreateWithCString(kCFAllocatorDefault, aFormat,
+                              kCFStringEncodingUTF8);
+  DebugLogV(aDecorate, formatCFSTR, args);
+  CFRelease(formatCFSTR);
+  va_end(args);
+}
+
+void
+nsCocoaDebugUtils::DebugLogV(bool aDecorate, CFStringRef aFormat,
+                             va_list aArgs)
+{
+  MaybeGetPathAndID();
+
+  CFStringRef message =
+    CFStringCreateWithFormatAndArguments(kCFAllocatorDefault, NULL,
+                                         aFormat, aArgs);
+
+  int msgLength =
+    CFStringGetMaximumSizeForEncoding(CFStringGetLength(message),
+                                      kCFStringEncodingUTF8);
+  char* msgUTF8 = (char*) calloc(msgLength, 1);
+  CFStringGetCString(message, msgUTF8, msgLength, kCFStringEncodingUTF8);
+  CFRelease(message);
+
+  int finishedLength = msgLength + PROC_PIDPATHINFO_MAXSIZE;
+  char* finished = (char*) calloc(finishedLength, 1);
+  const time_t currentTime = time(NULL);
+  char timestamp[30] = {0};
+  ctime_r(&currentTime, timestamp);
+  if (aDecorate) {
+    char threadName[MAXPATHLEN] = {0};
+    GetThreadName(threadName, sizeof(threadName));
+    snprintf(finished, finishedLength, "(%s) %s[%u] %s[%p] %s\n",
+            timestamp, gProcPath, getpid(), threadName, pthread_self(), msgUTF8);
+  } else {
+    snprintf(finished, finishedLength, "%s\n", msgUTF8);
+  }
+  free(msgUTF8);
+
+  fputs(finished, stdout);
+
+  // Use the Apple System Log facility, as NSLog and CFLog do.
+  aslclient asl = asl_open(NULL, gBundleID, ASL_OPT_NO_DELAY);
+  aslmsg msg = asl_new(ASL_TYPE_MSG);
+  asl_set(msg, ASL_KEY_LEVEL, "4"); // kCFLogLevelWarning, used by NSLog()
+  asl_set(msg, ASL_KEY_MSG, finished);
+  asl_send(asl, msg);
+  asl_free(msg);
+  asl_close(asl);
+
+  free(finished);
+}
+
+CSTypeRef
+nsCocoaDebugUtils::sInitializer = {0};
+
+CSSymbolicatorRef
+nsCocoaDebugUtils::sSymbolicator = {0};
+
+#define STACK_MAX 256
+
+void
+nsCocoaDebugUtils::PrintStackTrace()
+{
+  void** addresses = (void**) calloc(STACK_MAX, sizeof(void*));
+  if (!addresses) {
+    return;
+  }
+
+  CSSymbolicatorRef symbolicator = GetSymbolicatorRef();
+  if (CSIsNull(symbolicator)) {
+    free(addresses);
+    return;
+  }
+
+  uint32_t count = backtrace(addresses, STACK_MAX);
+  for (uint32_t i = 0; i < count; ++i) {
+    PrintAddress(addresses[i]);
+  }
+
+  ReleaseSymbolicator();
+  free(addresses);
+}
+
+void
+nsCocoaDebugUtils::PrintAddress(void* aAddress)
+{
+  const char* ownerName = "unknown";
+  const char* addressString = "unknown + 0";
+
+  char* allocatedOwnerName = nullptr;
+  char* allocatedAddressString = nullptr;
+
+  CSSymbolOwnerRef owner = {0};
+  CSSymbolicatorRef symbolicator = GetSymbolicatorRef();
+
+  if (!CSIsNull(symbolicator)) {
+    owner =
+      CSSymbolicatorGetSymbolOwnerWithAddressAtTime(symbolicator,
+                                                    (unsigned long long) aAddress,
+                                                    kCSNow);
+  }
+  if (!CSIsNull(owner)) {
+    ownerName = allocatedOwnerName = GetOwnerNameInt(aAddress, owner);
+    addressString = allocatedAddressString = GetAddressStringInt(aAddress, owner);
+  }
+  DebugLogInt(false, "    (%s) %s", ownerName, addressString);
+
+  free(allocatedOwnerName);
+  free(allocatedAddressString);
+
+  ReleaseSymbolicator();
+}
+
+char*
+nsCocoaDebugUtils::GetOwnerName(void* aAddress)
+{
+  return GetOwnerNameInt(aAddress);
+}
+
+char*
+nsCocoaDebugUtils::GetOwnerNameInt(void* aAddress, CSTypeRef aOwner)
+{
+  char* retval = (char*) calloc(MAXPATHLEN, 1);
+
+  const char* ownerName = "unknown";
+
+  CSSymbolicatorRef symbolicator = GetSymbolicatorRef();
+  CSTypeRef owner = aOwner;
+
+  if (CSIsNull(owner) && !CSIsNull(symbolicator)) {
+    owner =
+      CSSymbolicatorGetSymbolOwnerWithAddressAtTime(symbolicator,
+                                                    (unsigned long long) aAddress,
+                                                    kCSNow);
+  }
+
+  if (!CSIsNull(owner)) {
+    ownerName = CSSymbolOwnerGetName(owner);
+  }
+
+  snprintf(retval, MAXPATHLEN, "%s", ownerName);
+  ReleaseSymbolicator();
+
+  return retval;
+}
+
+char*
+nsCocoaDebugUtils::GetAddressString(void* aAddress)
+{
+  return GetAddressStringInt(aAddress);
+}
+
+char*
+nsCocoaDebugUtils::GetAddressStringInt(void* aAddress, CSTypeRef aOwner)
+{
+  char* retval = (char*) calloc(MAXPATHLEN, 1);
+
+  const char* addressName = "unknown";
+  unsigned long long addressOffset = 0;
+
+  CSSymbolicatorRef symbolicator = GetSymbolicatorRef();
+  CSTypeRef owner = aOwner;
+
+  if (CSIsNull(owner) && !CSIsNull(symbolicator)) {
+    owner =
+      CSSymbolicatorGetSymbolOwnerWithAddressAtTime(symbolicator,
+                                                    (unsigned long long) aAddress,
+                                                    kCSNow);
+  }
+
+  if (!CSIsNull(owner)) {
+    CSSymbolRef symbol =
+      CSSymbolOwnerGetSymbolWithAddress(owner,
+                                        (unsigned long long) aAddress);
+    if (!CSIsNull(symbol)) {
+      addressName = CSSymbolGetName(symbol);
+      CSRange range = CSSymbolGetRange(symbol);
+      addressOffset = (unsigned long long) aAddress - range.location;
+    } else {
+      addressOffset = (unsigned long long)
+        aAddress - CSSymbolOwnerGetBaseAddress(owner);
+    }
+  }
+
+  snprintf(retval, MAXPATHLEN, "%s + 0x%llx",
+           addressName, addressOffset);
+  ReleaseSymbolicator();
+
+  return retval;
+}
+
+CSSymbolicatorRef
+nsCocoaDebugUtils::GetSymbolicatorRef()
+{
+  if (CSIsNull(sSymbolicator)) {
+    // 0x40e0000 is the value returned by
+    // uint32_t CSSymbolicatorGetFlagsForNListOnlyData(void).  We don't use
+    // this method directly because it doesn't exist on OS X 10.6.  Unless
+    // we limit ourselves to NList data, it will take too long to get a
+    // stack trace where Dwarf debugging info is available (about 15 seconds
+    // with Firefox).  This means we won't be able to get a CSSourceInfoRef,
+    // or line number information.  Oh well.
+    sSymbolicator =
+      CSSymbolicatorCreateWithPidFlagsAndNotification(getpid(),
+                                                      0x40e0000, 0);
+  }
+  // Retaining just after creation prevents crashes when calling symbolicator
+  // code (for example from PrintStackTrace()) as Firefox is quitting.  Not
+  // sure why.  Doing this may mean that we leak sSymbolicator on quitting
+  // (if we ever created it).  No particular harm in that, though.
+  return CSRetain(sSymbolicator);
+}
+
+void
+nsCocoaDebugUtils::ReleaseSymbolicator()
+{
+  if (!CSIsNull(sSymbolicator)) {
+    CSRelease(sSymbolicator);
+  }
+}