#include "config.h"
#include "DataLog.h"
#include <stdarg.h>
#include <string.h>
#include <wtf/FilePrintStream.h>
#include <wtf/WTFThreadData.h>
#include <wtf/Threading.h>
#if OS(UNIX) || OS(DARWIN)
#include <unistd.h>
#endif
#define DATA_LOG_TO_FILE 0
#define DATA_LOG_TO_DARWIN_TEMP_DIR 0
#define DATA_LOG_FILENAME "/tmp/WTFLog"
namespace WTF {
#if USE(PTHREADS)
static pthread_once_t initializeLogFileOnceKey = PTHREAD_ONCE_INIT;
#endif
static FilePrintStream* file;
static uint64_t fileData[(sizeof(FilePrintStream) + 7) / 8];
static void initializeLogFileOnce()
{
#if DATA_LOG_TO_FILE
const long maxPathLength = 1024;
char filenameSuffix[maxPathLength + 1];
#if PLATFORM(WIN)
_snprintf(filenameSuffix, sizeof(filenameSuffix), ".%d.txt", GetCurrentProcessId());
#else
snprintf(filenameSuffix, sizeof(filenameSuffix), ".%d.txt", getpid());
#endif
#if DATA_LOG_TO_DARWIN_TEMP_DIR
char filenameBuffer[maxPathLength + 1];
unsigned suffixLength = strlen(filenameSuffix);
#if defined(DATA_LOG_FILENAME)
char* logBasename = strrchr(DATA_LOG_FILENAME, '/');
if (!logBasename)
logBasename = (char*)DATA_LOG_FILENAME;
#else
const char* logBasename = "WTFLog";
#endif
const char* filename = 0;
size_t lastComponentLength = strlen(logBasename) + suffixLength;
size_t dirnameLength = confstr(_CS_DARWIN_USER_TEMP_DIR, filenameBuffer, 1024);
if ((dirnameLength + lastComponentLength + suffixLength) < maxPathLength) {
strncat(filenameBuffer, logBasename, maxPathLength - dirnameLength);
filename = filenameBuffer;
}
#elif defined(DATA_LOG_FILENAME)
const char* filename = DATA_LOG_FILENAME;
#else
const char* filename = getenv("WTF_DATA_LOG_FILENAME");
#endif
char actualFilename[maxPathLength + 1];
if (filename) {
#if PLATFORM(WIN)
_snprintf(actualFilename, sizeof(actualFilename), "%s%s", filename, filenameSuffix);
#else
snprintf(actualFilename, sizeof(actualFilename), "%s%s", filename, filenameSuffix);
#endif
file = FilePrintStream::open(actualFilename, "w").release();
if (file)
WTFLogAlways("*** DataLog output to \"%s\" ***\n", actualFilename);
else
WTFLogAlways("Warning: Could not open DataLog file %s for writing.\n", actualFilename);
}
#endif // DATA_LOG_TO_FILE
if (!file) {
file = new (fileData) FilePrintStream(stderr, FilePrintStream::Borrow);
}
setvbuf(file->file(), 0, _IONBF, 0); }
static void initializeLogFile()
{
#if USE(PTHREADS)
pthread_once(&initializeLogFileOnceKey, initializeLogFileOnce);
#else
if (!file)
initializeLogFileOnce();
#endif
}
FilePrintStream& dataFile()
{
initializeLogFile();
return *file;
}
void dataLogFV(const char* format, va_list argList)
{
dataFile().vprintf(format, argList);
}
void dataLogF(const char* format, ...)
{
va_list argList;
va_start(argList, format);
dataLogFV(format, argList);
va_end(argList);
}
void dataLogFString(const char* str)
{
dataFile().printf("%s", str);
}
}