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-rw-r--r--js/src/devtools/vprof/vprof.cpp354
1 files changed, 354 insertions, 0 deletions
diff --git a/js/src/devtools/vprof/vprof.cpp b/js/src/devtools/vprof/vprof.cpp
new file mode 100644
index 000000000..e208d0405
--- /dev/null
+++ b/js/src/devtools/vprof/vprof.cpp
@@ -0,0 +1,354 @@
+/* -*- Mode: C++; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 4 -*- */
+/* 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 "VMPI.h"
+
+// Note, this is not supported in configurations with more than one AvmCore running
+// in the same process.
+
+#ifdef WIN32
+#include "windows.h"
+#else
+#define __cdecl
+#include <stdarg.h>
+#include <string.h>
+#endif
+
+#include "vprof.h"
+
+#ifndef MIN
+#define MIN(x,y) ((x) <= (y) ? x : y)
+#endif
+#ifndef MAX
+#define MAX(x,y) ((x) >= (y) ? x : y)
+#endif
+
+#ifndef MAXINT
+#define MAXINT int(unsigned(-1)>>1)
+#endif
+
+#ifndef MAXINT64
+#define MAXINT64 int64_t(uint64_t(-1)>>1)
+#endif
+
+#ifndef __STDC_WANT_SECURE_LIB__
+#define sprintf_s(b,size,fmt,...) sprintf((b),(fmt),__VA_ARGS__)
+#endif
+
+#if THREADED
+#define DO_LOCK(lock) Lock(lock); {
+#define DO_UNLOCK(lock) }; Unlock(lock)
+#else
+#define DO_LOCK(lock) { (void)(lock);
+#define DO_UNLOCK(lock) }
+#endif
+
+#if THREAD_SAFE
+#define LOCK(lock) DO_LOCK(lock)
+#define UNLOCK(lock) DO_UNLOCK(lock)
+#else
+#define LOCK(lock) { (void)(lock);
+#define UNLOCK(lock) }
+#endif
+
+static entry* entries = nullptr;
+static bool notInitialized = true;
+static long glock = LOCK_IS_FREE;
+
+#define Lock(lock) while (_InterlockedCompareExchange(lock, LOCK_IS_TAKEN, LOCK_IS_FREE) == LOCK_IS_TAKEN){};
+#define Unlock(lock) _InterlockedCompareExchange(lock, LOCK_IS_FREE, LOCK_IS_TAKEN);
+
+#if defined(WIN32)
+ static void vprof_printf(const char* format, ...)
+ {
+ va_list args;
+ va_start(args, format);
+
+ char buf[1024];
+ vsnprintf(buf, sizeof(buf), format, args);
+
+ va_end(args);
+
+ printf(buf);
+ ::OutputDebugStringA(buf);
+ }
+#else
+ #define vprof_printf printf
+#endif
+
+static inline entry* reverse (entry* s)
+{
+ entry_t e, n, p;
+
+ p = nullptr;
+ for (e = s; e; e = n) {
+ n = e->next;
+ e->next = p;
+ p = e;
+ }
+
+ return p;
+}
+
+static char* f (double d)
+{
+ static char s[80];
+ char* p;
+ sprintf_s (s, sizeof(s), "%lf", d);
+ p = s+VMPI_strlen(s)-1;
+ while (*p == '0') {
+ *p = '\0';
+ p--;
+ if (p == s) break;
+ }
+ if (*p == '.') *p = '\0';
+ return s;
+}
+
+static void dumpProfile (void)
+{
+ entry_t e;
+
+ entries = reverse(entries);
+ vprof_printf ("event avg [min : max] total count\n");
+ for (e = entries; e; e = e->next) {
+ if (e->count == 0) continue; // ignore entries with zero count.
+ vprof_printf ("%s", e->file);
+ if (e->line >= 0) {
+ vprof_printf (":%d", e->line);
+ }
+ vprof_printf (" %s [%lld : %lld] %lld %lld ",
+ f(((double)e->sum)/((double)e->count)), (long long int)e->min, (long long int)e->max, (long long int)e->sum, (long long int)e->count);
+ if (e->h) {
+ int j = MAXINT;
+ for (j = 0; j < e->h->nbins; j ++) {
+ vprof_printf ("(%lld < %lld) ", (long long int)e->h->count[j], (long long int)e->h->lb[j]);
+ }
+ vprof_printf ("(%lld >= %lld) ", (long long int)e->h->count[e->h->nbins], (long long int)e->h->lb[e->h->nbins-1]);
+ }
+ if (e->func) {
+ int j;
+ for (j = 0; j < NUM_EVARS; j++) {
+ if (e->ivar[j] != 0) {
+ vprof_printf ("IVAR%d %d ", j, e->ivar[j]);
+ }
+ }
+ for (j = 0; j < NUM_EVARS; j++) {
+ if (e->i64var[j] != 0) {
+ vprof_printf ("I64VAR%d %lld ", j, (long long int)e->i64var[j]);
+ }
+ }
+ for (j = 0; j < NUM_EVARS; j++) {
+ if (e->dvar[j] != 0) {
+ vprof_printf ("DVAR%d %lf ", j, e->dvar[j]);
+ }
+ }
+ }
+ vprof_printf ("\n");
+ }
+ entries = reverse(entries);
+}
+
+static inline entry_t findEntry (char* file, int line)
+{
+ for (entry_t e = entries; e; e = e->next) {
+ if ((e->line == line) && (VMPI_strcmp (e->file, file) == 0)) {
+ return e;
+ }
+ }
+ return nullptr;
+}
+
+// Initialize the location pointed to by 'id' to a new value profile entry
+// associated with 'file' and 'line', or do nothing if already initialized.
+// An optional final argument provides a user-defined probe function.
+
+int initValueProfile(void** id, char* file, int line, ...)
+{
+ DO_LOCK (&glock);
+ entry_t e = (entry_t) *id;
+ if (notInitialized) {
+ atexit (dumpProfile);
+ notInitialized = false;
+ }
+
+ if (e == nullptr) {
+ e = findEntry (file, line);
+ if (e) {
+ *id = e;
+ }
+ }
+
+ if (e == nullptr) {
+ va_list va;
+ e = (entry_t) malloc (sizeof(entry));
+ e->lock = LOCK_IS_FREE;
+ e->file = file;
+ e->line = line;
+ e->value = 0;
+ e->sum = 0;
+ e->count = 0;
+ e->min = 0;
+ e->max = 0;
+ // optional probe function argument
+ va_start (va, line);
+ e->func = (void (__cdecl*)(void*)) va_arg (va, void*);
+ va_end (va);
+ e->h = nullptr;
+ e->genptr = nullptr;
+ VMPI_memset (&e->ivar, 0, sizeof(e->ivar));
+ VMPI_memset (&e->i64var, 0, sizeof(e->i64var));
+ VMPI_memset (&e->dvar, 0, sizeof(e->dvar));
+ e->next = entries;
+ entries = e;
+ *id = e;
+ }
+ DO_UNLOCK (&glock);
+
+ return 0;
+}
+
+// Record a value profile event.
+
+int profileValue(void* id, int64_t value)
+{
+ entry_t e = (entry_t) id;
+ long* lock = &(e->lock);
+ LOCK (lock);
+ e->value = value;
+ if (e->count == 0) {
+ e->sum = value;
+ e->count = 1;
+ e->min = value;
+ e->max = value;
+ } else {
+ e->sum += value;
+ e->count ++;
+ e->min = MIN (e->min, value);
+ e->max = MAX (e->max, value);
+ }
+ if (e->func) e->func (e);
+ UNLOCK (lock);
+
+ return 0;
+}
+
+// Initialize the location pointed to by 'id' to a new histogram profile entry
+// associated with 'file' and 'line', or do nothing if already initialized.
+
+int initHistProfile(void** id, char* file, int line, int nbins, ...)
+{
+ DO_LOCK (&glock);
+ entry_t e = (entry_t) *id;
+ if (notInitialized) {
+ atexit (dumpProfile);
+ notInitialized = false;
+ }
+
+ if (e == nullptr) {
+ e = findEntry (file, line);
+ if (e) {
+ *id = e;
+ }
+ }
+
+ if (e == nullptr) {
+ va_list va;
+ hist_t h;
+ int b, n, s;
+ int64_t* lb;
+
+ e = (entry_t) malloc (sizeof(entry));
+ e->lock = LOCK_IS_FREE;
+ e->file = file;
+ e->line = line;
+ e->value = 0;
+ e->sum = 0;
+ e->count = 0;
+ e->min = 0;
+ e->max = 0;
+ e->func = nullptr;
+ e->h = h = (hist_t) malloc (sizeof(hist));
+ n = 1+MAX(nbins,0);
+ h->nbins = n-1;
+ s = n*sizeof(int64_t);
+ lb = (int64_t*) malloc (s);
+ h->lb = lb;
+ VMPI_memset (h->lb, 0, s);
+ h->count = (int64_t*) malloc (s);
+ VMPI_memset (h->count, 0, s);
+
+ va_start (va, nbins);
+ for (b = 0; b < nbins; b++) {
+ //lb[b] = va_arg (va, int64_t);
+ lb[b] = va_arg (va, int);
+ }
+ lb[b] = MAXINT64;
+ va_end (va);
+
+ e->genptr = nullptr;
+ VMPI_memset (&e->ivar, 0, sizeof(e->ivar));
+ VMPI_memset (&e->i64var, 0, sizeof(e->i64var));
+ VMPI_memset (&e->dvar, 0, sizeof(e->dvar));
+ e->next = entries;
+ entries = e;
+ *id = e;
+ }
+ DO_UNLOCK (&glock);
+
+ return 0;
+}
+
+// Record a histogram profile event.
+
+int histValue(void* id, int64_t value)
+{
+ entry_t e = (entry_t) id;
+ long* lock = &(e->lock);
+ hist_t h = e->h;
+ int nbins = h->nbins;
+ int64_t* lb = h->lb;
+ int b;
+
+ LOCK (lock);
+ e->value = value;
+ if (e->count == 0) {
+ e->sum = value;
+ e->count = 1;
+ e->min = value;
+ e->max = value;
+ } else {
+ e->sum += value;
+ e->count ++;
+ e->min = MIN (e->min, value);
+ e->max = MAX (e->max, value);
+ }
+ for (b = 0; b < nbins; b ++) {
+ if (value < lb[b]) break;
+ }
+ h->count[b] ++;
+ UNLOCK (lock);
+
+ return 0;
+}
+
+#if defined(_MSC_VER) && defined(_M_IX86)
+uint64_t readTimestampCounter()
+{
+ // read the cpu cycle counter. 1 tick = 1 cycle on IA32
+ _asm rdtsc;
+}
+#elif defined(__GNUC__) && (__i386__ || __x86_64__)
+uint64_t readTimestampCounter()
+{
+ uint32_t lo, hi;
+ __asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi));
+ return (uint64_t(hi) << 32) | lo;
+}
+#else
+// add stub for platforms without it, so fat builds don't fail
+uint64_t readTimestampCounter() { return 0; }
+#endif
+
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