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// fglogger.cc
#include "fglogger.h"
#ifndef _FGEXC_H
#include "fgexc.h"
#endif
#ifndef _FGGLOB_H
#include "fgglob.h"
#endif
#include <stdio.h>
#include <assert.h>
#include <time.h>
#include <sys/time.h>
#include <unistd.h>
// Threading: FGLogger is a shared object so we need to serialize access
// to it
#include <pthread.h>
// Statics
FGString FGLogger::msFileName = "fglog.out";
FGLogger* FGLogger::mspLogger = 0;
// Synchronization object
// Should be private member static but can't forward declare
// pthread_mutex_t
static pthread_mutex_t msLogMutex;
void
FGLogger::SetLogName(const FGString& name)
{
msFileName = name;
}
FGLogger&
FGLogger::GetLogger(void)
{
if (mspLogger == 0) {
mspLogger = new FGLogger(msFileName);
pthread_mutex_init(&msLogMutex, NULL);
}
return *mspLogger;
}
FGLogger::FGLogger(const FGString& fileName)
{
if (!FGGlob::gLogDisabled) {
mpFile = fopen(fileName, "a");
if (mpFile == NULL) {
FGString details("`");
details += fileName;
details += '\'';
throw FGException(FGException::kLogFileOpenFailed, details);
}
} else {
mpFile = NULL;
}
}
void
FGLogger::LogMsg(const FGString& msg, EFGLogSeverity severity,
bool locked)
{
MutexAutoUnlocker autoLocker;
// NB. It locked is set "true", client MUST have called public
// ::Lock() method on the logger class!
if (!locked) {
autoLocker.Prime(&msLogMutex);
}
if (FGGlob::gVerbose) {
printf("%s\n", (const char*)msg);
}
if (FGGlob::gLogDisabled || severity == kFGLLVerbose) {
return;
}
FGString dateStamp = GetDateStamp();
fprintf(mpFile, "%s %s\n", (const char*)dateStamp, (const char*)msg);
fflush(mpFile);
}
void
FGLogger::LogException(const FGException& e, bool locked)
{
MutexAutoUnlocker autoLocker;
// NB. It locked is set "true", client MUST have called public
// ::Lock() method on the logger class!
if (!locked) {
autoLocker.Prime(&msLogMutex);
}
// {ce} - 07-Dec-99: oops, forgot to log this to stdout
FGString dateStamp = GetDateStamp();
FGString excText = e.GetFullDetails();
if (FGGlob::gVerbose)
{
printf("%s\n", (const char*)excText);
}
if (FGGlob::gLogDisabled) {
return;
}
fprintf(mpFile, "%s %s\n", (const char*)dateStamp, (const char*)excText);
fflush(mpFile);
}
FGString
FGLogger::GetDateStamp(void) const
{
char dateBuf[64];
struct timeval now;
gettimeofday(&now, NULL);
struct tm* pTime = localtime(&now.tv_sec);
strftime(dateBuf, sizeof(dateBuf), "[%d %b %Y %H:%M]", pTime);
FGString ret(dateBuf);
return ret;
}
void
FGLogger::Lock(void)
{
pthread_mutex_lock(&msLogMutex);
}
void
FGLogger::Unlock(void)
{
pthread_mutex_unlock(&msLogMutex);
}
// Helper classes
FGLogger::MutexAutoUnlocker::MutexAutoUnlocker()
: mpMutex(0)
{
}
FGLogger::MutexAutoUnlocker::~MutexAutoUnlocker()
{
if (mpMutex)
{
pthread_mutex_unlock(static_cast<pthread_mutex_t*>(mpMutex));
}
}
void
FGLogger::MutexAutoUnlocker::Prime(void* pMutex)
{
mpMutex = pMutex;
pthread_mutex_lock(static_cast<pthread_mutex_t*>(mpMutex));
}
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