#include "SimpleMutex.h"
#include <assert.h>

SimpleMutex::SimpleMutex()
{
	hMutex = CreateMutex(NULL, FALSE, 0);
	assert(hMutex);
}

SimpleMutex::~SimpleMutex()
{
	CloseHandle(hMutex);
}

void SimpleMutex::Lock(void)
{
	#ifdef _DEBUG
	DWORD d = 
	#endif
	WaitForSingleObject(hMutex, INFINITE);	

	#ifdef _DEBUG
	assert(d==WAIT_OBJECT_0);
	#endif
}

void SimpleMutex::Unlock(void)
{
#ifdef _DEBUG
	BOOL b = 
#endif
		ReleaseMutex(hMutex);
#ifdef _DEBUG
	if (b==0)
	{
		LPVOID lpMsgBuf;
		FormatMessage( 
			FORMAT_MESSAGE_ALLOCATE_BUFFER | 
			FORMAT_MESSAGE_FROM_SYSTEM | 
			FORMAT_MESSAGE_IGNORE_INSERTS,
			NULL,
			GetLastError(),
			MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
			(LPTSTR) &lpMsgBuf,
			0,
			NULL 
		);
		// Process any inserts in lpMsgBuf.
		// ...
		// Display the string.
		MessageBox( NULL, (LPCTSTR)lpMsgBuf, "Error", MB_OK | MB_ICONINFORMATION );
		// Free the buffer.
		LocalFree( lpMsgBuf );

		assert(1);
	}
#endif
}