mirror of
https://github.com/mozilla/gecko-dev.git
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120 lines
2.7 KiB
C++
120 lines
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// needed to get vsnprintf with glibc
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#ifndef _ISOC99_SOURCE
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#define _ISOC99_SOURCE
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#endif
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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#include "prenv.h"
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#include "mozilla/FunctionTimer.h"
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#ifdef _MSC_VER
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#define vsnprintf _vsnprintf
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#include <windows.h>
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#include <mmsystem.h>
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#endif
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using namespace mozilla;
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// This /must/ come before the call to InitTimers below,
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// or its constructor will be called after we've already
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// assigned the Now() value to it.
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static TimeStamp sAppStart;
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nsAutoPtr<FunctionTimerLog> FunctionTimer::sLog;
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char *FunctionTimer::sBuf1 = nsnull;
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char *FunctionTimer::sBuf2 = nsnull;
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int FunctionTimer::sBufSize = FunctionTimer::InitTimers();
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unsigned FunctionTimer::sDepth = 0;
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int
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FunctionTimer::InitTimers()
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{
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if (PR_GetEnv("MOZ_FT") == NULL)
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return 0;
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// ensure that this is initialized before us
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TimeStamp::Startup();
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sLog = new FunctionTimerLog(PR_GetEnv("MOZ_FT"));
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sBuf1 = (char *) malloc(BUF_LOG_LENGTH);
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sBuf2 = (char *) malloc(BUF_LOG_LENGTH);
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sAppStart = TimeStamp::Now();
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return BUF_LOG_LENGTH;
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}
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FunctionTimerLog::FunctionTimerLog(const char *fname)
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: mLatest(sAppStart)
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{
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if (strcmp(fname, "stdout") == 0) {
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mFile = stdout;
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} else if (strcmp(fname, "stderr") == 0) {
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mFile = stderr;
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} else {
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FILE *fp = fopen(fname, "wb");
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if (!fp) {
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NS_WARNING("FunctionTimerLog: Failed to open file specified, logging disabled!");
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}
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mFile = fp;
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}
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#ifdef _MSC_VER
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// Get 1ms resolution on Windows
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timeBeginPeriod(1);
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#endif
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}
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FunctionTimerLog::~FunctionTimerLog()
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{
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if (mFile && mFile != stdout && mFile != stderr)
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fclose((FILE*)mFile);
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#ifdef _MSC_VER
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timeEndPeriod(1);
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#endif
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}
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void
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FunctionTimerLog::LogString(const char *str)
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{
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if (mFile) {
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mLatest = TimeStamp::Now();
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TimeDuration elapsed = mLatest - sAppStart;
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fprintf((FILE*)mFile, "[% 9.2f] %s\n", elapsed.ToSeconds() * 1000.0, str);
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}
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}
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TimeDuration
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FunctionTimerLog::LatestSinceStartup() const
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{
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return mLatest - sAppStart;
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}
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int
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FunctionTimer::ft_vsnprintf(char *str, int maxlen, const char *fmt, va_list args)
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{
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return vsnprintf(str, maxlen, fmt, args);
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}
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int
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FunctionTimer::ft_snprintf(char *str, int maxlen, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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int rval = ft_vsnprintf(str, maxlen, fmt, ap);
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va_end(ap);
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return rval;
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}
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