reactos/modules/rosapps/applications/fraginator/Mutex.h

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/*****************************************************************************
Mutex
*****************************************************************************/
#ifndef MUTEX_H
#define MUTEX_H
#include "Unfrag.h"
class Mutex
{
public:
Mutex ()
{
// NT only code begin ... Win9x disregards this part
SECURITY_ATTRIBUTES MutexAttribs;
memset (&MutexAttribs, 0, sizeof (SECURITY_ATTRIBUTES));
MutexAttribs.bInheritHandle = false;
MutexAttribs.nLength = sizeof (SECURITY_ATTRIBUTES);
MutexAttribs.lpSecurityDescriptor = NULL;
// NT only code end
Locked = false;
LockCount = 0;
MutexHandle = CreateMutex (&MutexAttribs, Locked, NULL);
return;
}
~Mutex ()
{
Lock ();
CloseHandle (MutexHandle);
}
void Lock (void)
{
Locked = true;
WaitForSingleObject (MutexHandle, INFINITE);
LockCount += 1;
return;
}
void Unlock (void)
{
LockCount -= 1;
if (LockCount <= 0)
{
LockCount = 0;
Locked = false;
}
ReleaseMutex (MutexHandle);
return;
}
bool IsLocked (void)
{
return (Locked);
}
protected:
uint32 LockCount;
HANDLE MutexHandle;
bool Locked;
};
#endif // MUTEX_H