LCOV - code coverage report
Current view: directory - xpcom/base - FunctionTimer.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 43 7 16.3 %
Date: 2012-06-02 Functions: 10 3 30.0 %

       1                 : /* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is Mozilla code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Mozilla Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 2009
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *   Vladimir Vukicevic <vladimir@pobox.com>
      24                 :  *
      25                 :  * Alternatively, the contents of this file may be used under the terms of
      26                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      27                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      28                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      29                 :  * of those above. If you wish to allow use of your version of this file only
      30                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      31                 :  * use your version of this file under the terms of the MPL, indicate your
      32                 :  * decision by deleting the provisions above and replace them with the notice
      33                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      34                 :  * the provisions above, a recipient may use your version of this file under
      35                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      36                 :  *
      37                 :  * ***** END LICENSE BLOCK ***** */
      38                 : 
      39                 : // needed to get vsnprintf with glibc
      40                 : #ifndef _ISOC99_SOURCE
      41                 : #define _ISOC99_SOURCE
      42                 : #endif
      43                 : 
      44                 : #include <stdarg.h>
      45                 : #include <stdio.h>
      46                 : #include <string.h>
      47                 : 
      48                 : #include "prenv.h"
      49                 : 
      50                 : #include "mozilla/FunctionTimer.h"
      51                 : 
      52                 : #ifdef _MSC_VER
      53                 : #define vsnprintf _vsnprintf
      54                 : #include <windows.h>
      55                 : #include <mmsystem.h>
      56                 : #endif
      57                 : 
      58                 : using namespace mozilla;
      59                 : 
      60                 : // This /must/ come before the call to InitTimers below,
      61                 : // or its constructor will be called after we've already
      62                 : // assigned the Now() value to it.
      63            1464 : static TimeStamp sAppStart;
      64                 : 
      65            1464 : nsAutoPtr<FunctionTimerLog> FunctionTimer::sLog;
      66                 : char *FunctionTimer::sBuf1 = nsnull;
      67                 : char *FunctionTimer::sBuf2 = nsnull;
      68            1464 : int FunctionTimer::sBufSize = FunctionTimer::InitTimers();
      69                 : unsigned FunctionTimer::sDepth = 0;
      70                 : 
      71                 : int
      72            1464 : FunctionTimer::InitTimers()
      73                 : {
      74            1464 :     if (PR_GetEnv("MOZ_FT") == NULL)
      75            1464 :         return 0;
      76                 : 
      77                 :     // ensure that this is initialized before us
      78               0 :     TimeStamp::Startup();
      79                 : 
      80               0 :     sLog = new FunctionTimerLog(PR_GetEnv("MOZ_FT"));
      81               0 :     sBuf1 = (char *) malloc(BUF_LOG_LENGTH);
      82               0 :     sBuf2 = (char *) malloc(BUF_LOG_LENGTH);
      83               0 :     sAppStart = TimeStamp::Now();
      84                 : 
      85               0 :     return BUF_LOG_LENGTH;
      86                 : }
      87                 : 
      88               0 : FunctionTimerLog::FunctionTimerLog(const char *fname)
      89               0 :     : mLatest(sAppStart)
      90                 : {
      91               0 :     if (strcmp(fname, "stdout") == 0) {
      92               0 :         mFile = stdout;
      93               0 :     } else if (strcmp(fname, "stderr") == 0) {
      94               0 :         mFile = stderr;
      95                 :     } else {
      96               0 :         FILE *fp = fopen(fname, "wb");
      97               0 :         if (!fp) {
      98               0 :             NS_WARNING("FunctionTimerLog: Failed to open file specified, logging disabled!");
      99                 :         }
     100               0 :         mFile = fp;
     101                 :     }
     102                 : 
     103                 : #ifdef _MSC_VER
     104                 :     // Get 1ms resolution on Windows
     105                 :     timeBeginPeriod(1);
     106                 : #endif
     107               0 : }
     108                 : 
     109               0 : FunctionTimerLog::~FunctionTimerLog()
     110                 : {
     111               0 :     if (mFile && mFile != stdout && mFile != stderr)
     112               0 :         fclose((FILE*)mFile);
     113                 : 
     114                 : #ifdef _MSC_VER
     115                 :     timeEndPeriod(1);
     116                 : #endif
     117               0 : }
     118                 : 
     119                 : void
     120               0 : FunctionTimerLog::LogString(const char *str)
     121                 : {
     122               0 :     if (mFile) {
     123               0 :         mLatest = TimeStamp::Now();
     124               0 :         TimeDuration elapsed = mLatest - sAppStart;
     125               0 :         fprintf((FILE*)mFile, "[% 9.2f] %s\n", elapsed.ToSeconds() * 1000.0, str);
     126                 :     }
     127               0 : }
     128                 : 
     129                 : TimeDuration
     130               0 : FunctionTimerLog::LatestSinceStartup() const
     131                 : {
     132               0 :     return mLatest - sAppStart;
     133                 : }
     134                 : 
     135                 : int
     136               0 : FunctionTimer::ft_vsnprintf(char *str, int maxlen, const char *fmt, va_list args)
     137                 : {
     138               0 :     return vsnprintf(str, maxlen, fmt, args);
     139                 : }
     140                 : 
     141                 : int
     142               0 : FunctionTimer::ft_snprintf(char *str, int maxlen, const char *fmt, ...)
     143                 : {
     144                 :     va_list ap;
     145               0 :     va_start(ap, fmt);
     146                 : 
     147               0 :     int rval = ft_vsnprintf(str, maxlen, fmt, ap);
     148                 : 
     149               0 :     va_end(ap);
     150                 : 
     151               0 :     return rval;
     152            4392 : }

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