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1 /* | 1 /* |
2 * Copyright (C) 2012 Apple Inc. All rights reserved. | 2 * Copyright (C) 2012 Apple Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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25 | 25 |
26 #include "wtf/DataLog.h" | 26 #include "wtf/DataLog.h" |
27 | 27 |
28 #if OS(POSIX) | 28 #if OS(POSIX) |
29 #include <pthread.h> | 29 #include <pthread.h> |
30 #include <unistd.h> | 30 #include <unistd.h> |
31 #endif | 31 #endif |
32 | 32 |
33 #define DATA_LOG_TO_FILE 0 | 33 #define DATA_LOG_TO_FILE 0 |
34 | 34 |
35 // Uncomment to force logging to the given file regardless of what the environme
nt variable says. Note that | 35 // Uncomment to force logging to the given file regardless of what the |
36 // we will append ".<pid>.txt" where <pid> is the PID. | 36 // environment variable says. Note that we will append ".<pid>.txt" where <pid> |
| 37 // is the PID. |
37 | 38 |
38 // This path won't work on Windows, make sure to change to something like C:\\Us
ers\\<more path>\\log.txt. | 39 // This path won't work on Windows, make sure to change to something like |
| 40 // C:\\Users\\<more path>\\log.txt. |
39 #define DATA_LOG_FILENAME "/tmp/WTFLog" | 41 #define DATA_LOG_FILENAME "/tmp/WTFLog" |
40 | 42 |
41 namespace WTF { | 43 namespace WTF { |
42 | 44 |
43 #if OS(POSIX) | 45 #if OS(POSIX) |
44 static pthread_once_t initializeLogFileOnceKey = PTHREAD_ONCE_INIT; | 46 static pthread_once_t initializeLogFileOnceKey = PTHREAD_ONCE_INIT; |
45 #endif | 47 #endif |
46 | 48 |
47 static FilePrintStream* file; | 49 static FilePrintStream* file; |
48 | 50 |
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61 if (filename) { | 63 if (filename) { |
62 file = FilePrintStream::open(actualFilename, "w").release(); | 64 file = FilePrintStream::open(actualFilename, "w").release(); |
63 if (!file) | 65 if (!file) |
64 fprintf(stderr, "Warning: Could not open log file %s for writing.\n", | 66 fprintf(stderr, "Warning: Could not open log file %s for writing.\n", |
65 actualFilename); | 67 actualFilename); |
66 } | 68 } |
67 #endif // DATA_LOG_TO_FILE | 69 #endif // DATA_LOG_TO_FILE |
68 if (!file) | 70 if (!file) |
69 file = new FilePrintStream(stderr, FilePrintStream::Borrow); | 71 file = new FilePrintStream(stderr, FilePrintStream::Borrow); |
70 | 72 |
71 setvbuf( | 73 // Prefer unbuffered output, so that we get a full log upon crash or |
72 file->file(), 0, _IONBF, | 74 // deadlock. |
73 0); // Prefer unbuffered output, so that we get a full log upon crash or
deadlock. | 75 setvbuf(file->file(), 0, _IONBF, 0); |
74 } | 76 } |
75 | 77 |
76 static void initializeLogFile() { | 78 static void initializeLogFile() { |
77 #if OS(POSIX) | 79 #if OS(POSIX) |
78 pthread_once(&initializeLogFileOnceKey, initializeLogFileOnce); | 80 pthread_once(&initializeLogFileOnceKey, initializeLogFileOnce); |
79 #else | 81 #else |
80 if (!file) | 82 if (!file) |
81 initializeLogFileOnce(); | 83 initializeLogFileOnce(); |
82 #endif | 84 #endif |
83 } | 85 } |
84 | 86 |
85 FilePrintStream& dataFile() { | 87 FilePrintStream& dataFile() { |
86 initializeLogFile(); | 88 initializeLogFile(); |
87 return *file; | 89 return *file; |
88 } | 90 } |
89 | 91 |
90 void dataLogFV(const char* format, va_list argList) { | 92 void dataLogFV(const char* format, va_list argList) { |
91 dataFile().vprintf(format, argList); | 93 dataFile().vprintf(format, argList); |
92 } | 94 } |
93 | 95 |
94 void dataLogF(const char* format, ...) { | 96 void dataLogF(const char* format, ...) { |
95 va_list argList; | 97 va_list argList; |
96 va_start(argList, format); | 98 va_start(argList, format); |
97 dataLogFV(format, argList); | 99 dataLogFV(format, argList); |
98 va_end(argList); | 100 va_end(argList); |
99 } | 101 } |
100 | 102 |
101 } // namespace WTF | 103 } // namespace WTF |
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