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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
commit | 43a97878ce14b72f0981164f87f2e35e14151312 (patch) | |
tree | 620249daf56c0258faa40cbdcf9cfba06de2a846 /js/src/devtools/vprof/vprof.cpp | |
parent | Initial commit. (diff) | |
download | firefox-43a97878ce14b72f0981164f87f2e35e14151312.tar.xz firefox-43a97878ce14b72f0981164f87f2e35e14151312.zip |
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/devtools/vprof/vprof.cpp')
-rw-r--r-- | js/src/devtools/vprof/vprof.cpp | 359 |
1 files changed, 359 insertions, 0 deletions
diff --git a/js/src/devtools/vprof/vprof.cpp b/js/src/devtools/vprof/vprof.cpp new file mode 100644 index 0000000000..873c354b7e --- /dev/null +++ b/js/src/devtools/vprof/vprof.cpp @@ -0,0 +1,359 @@ +/* -*- Mode: C++; c-basic-offset: 2; 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 "util/WindowsWrapper.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 |