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#ifndef _FGLOGGER_H
#define _FGLOGGER_H
// fglogger.h
// Simple class encapsulating the event logger
#ifndef _FGSTRING_H
#include "fgstring.h"
#endif
// Fun and games!!
struct _IO_FILE;
typedef struct _IO_FILE FILE;
class FGException;
class FGLogger {
public:
// Enum of log severities
enum EFGLogSeverity {
kFGLLDebug = 1,
kFGLLVerbose,
kFGLLInfo,
kFGLLWarn,
kFGLLErr,
kFGLLBadNews
};
// To shut up some warnings
FGLogger();
// The all important methods to log things
void LogMsg(const FGString& msg, EFGLogSeverity severity,
bool locked = false);
void LogException(const FGException& e, bool locked = false);
// Method to access the logger object - singleton pattern
static FGLogger& GetLogger(void);
// To set the log file name
static void SetLogName(const FGString& name);
// Special lock methods for client activity that needs to guarantee
// sequentially logged messages appear uninterrupted by other thread
// logging activity
static void Lock(void);
static void Unlock(void);
private:
// Banned!
FGLogger(const FGLogger& other);
FGLogger& operator=(const FGLogger& other);
// Construct the logger
FGLogger(const FGString& fileName);
// The actual log instance
static FGLogger* mspLogger;
// The filename to log to - must be set before first call to
// GetLogger()
static FGString msFileName;
// Internal methods
FGString GetDateStamp(void) const;
// Stream we are logging to
FILE* mpFile;
// Helper classes
// Urgh. Can't forward declare pthread_mutex_t => use of void*
class MutexAutoUnlocker
{
public:
MutexAutoUnlocker();
void Prime(void* pMutex);
~MutexAutoUnlocker();
private:
void* mpMutex;
};
};
#endif // _FGLOGGER_H
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