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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