mirror of
https://github.com/flutter/flutter.git
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109 lines
3.2 KiB
C++
109 lines
3.2 KiB
C++
/*
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* Copyright (C) 2012 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "flutter/sky/engine/wtf/DataLog.h"
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#if OS(POSIX)
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#include <pthread.h>
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#include <unistd.h>
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#endif
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#define DATA_LOG_TO_FILE 0
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// Uncomment to force logging to the given file regardless of what the environment variable says. Note that
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// we will append ".<pid>.txt" where <pid> is the PID.
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// This path won't work on Windows, make sure to change to something like C:\\Users\\<more path>\\log.txt.
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#define DATA_LOG_FILENAME "/tmp/WTFLog"
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namespace WTF {
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#if USE(PTHREADS)
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static pthread_once_t initializeLogFileOnceKey = PTHREAD_ONCE_INIT;
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#endif
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static FilePrintStream* file;
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static void initializeLogFileOnce()
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{
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#if DATA_LOG_TO_FILE
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#ifdef DATA_LOG_FILENAME
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const char* filename = DATA_LOG_FILENAME;
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#else
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const char* filename = getenv("WTF_DATA_LOG_FILENAME");
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#endif
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char actualFilename[1024];
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snprintf(actualFilename, sizeof(actualFilename), "%s.%d.txt", filename, getpid());
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if (filename) {
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file = FilePrintStream::open(actualFilename, "w").leakPtr();
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if (!file)
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fprintf(stderr, "Warning: Could not open log file %s for writing.\n", actualFilename);
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}
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#endif // DATA_LOG_TO_FILE
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if (!file)
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file = new FilePrintStream(stderr, FilePrintStream::Borrow);
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setvbuf(file->file(), 0, _IONBF, 0); // Prefer unbuffered output, so that we get a full log upon crash or deadlock.
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}
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static void initializeLogFile()
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{
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#if USE(PTHREADS)
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pthread_once(&initializeLogFileOnceKey, initializeLogFileOnce);
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#else
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if (!file)
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initializeLogFileOnce();
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#endif
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}
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FilePrintStream& dataFile()
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{
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initializeLogFile();
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return *file;
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}
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void dataLogFV(const char* format, va_list argList)
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{
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dataFile().vprintf(format, argList);
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}
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void dataLogF(const char* format, ...)
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{
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va_list argList;
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va_start(argList, format);
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dataLogFV(format, argList);
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va_end(argList);
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}
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void dataLogFString(const char* str)
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{
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dataFile().printf("%s", str);
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}
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} // namespace WTF
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