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/*
* Modification History
*
* 2000-October-14 Jason Rohrer
* Created.
*
* 2001-January-27 Jason Rohrer
* Converted to use MutexLock and added to minorGems source tree.
* Changed tprintf to be static (the mutexes don't work otherwise).
* Now we're closing the argument list.
* Fixed so that it works with any number of arguments.
* Changed name of print function to printf.
*
* 2004-March-31 Jason Rohrer
* Fixed static memory leak.
*/
#include "minorGems/common.h"
#ifndef THREAD_SAFE_PRINTER_INCLUDED
#define THREAD_SAFE_PRINTER_INCLUDED
#include "MutexLock.h"
#include <stdio.h>
// for variable argument lists
#include <stdarg.h>
/**
* Thread safe printf function. Note that printf is actually thread safe
* anyway, so this is just to demonstrate and test locks. It seems as
* though printf _isn't_ thread safe on certain platforms, so this class
* may be useful.
*
* @author Jason Rohrer
*/
class ThreadSafePrinter {
public:
static int printf( const char* inFormatString, ... );
private:
static MutexLock sLock;
};
// initialize static members
MutexLock ThreadSafePrinter::sLock;
inline int ThreadSafePrinter::printf( const char*inFormatString, ... ) {
va_list argList;
va_start( argList, inFormatString );
sLock.lock();
int returnVal = vprintf( inFormatString, argList );
fflush( stdout );
sLock.unlock();
va_end( argList );
return returnVal;
}
#endif
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