#include <windows.h>
//#include <process.h>

#include <stdio.h>
#include "SimpleMutex.h"
//#include "GlobalUnit.h"

////////////////////////////////////////////////////////////////////
//CSema
CSema::CSema(const char *sName, unsigned int nInit, bool bCreate)
{
	m_bCreate = bCreate;
	if (!m_bCreate)
		return;

	m_hSema = CreateSemaphore(NULL,nInit,0xffff,NULL);	
	if (!m_hSema){
		char txt[256];
		sprintf(txt, "Create semaphore error, errno=%d\n", errno);
		OutputDebugStringA( txt );
	}
}

CSema::~CSema()
{
	if (!m_bCreate)
		return;

	if( !CloseHandle(m_hSema) ){
		char txt[256];
		sprintf(txt, "Close semaphore error, errno=%d\n", errno);
		OutputDebugStringA( txt );
	}
}

int CSema::ActP(DWORD dwTimeout)
{
	if (!m_bCreate)
		return -1;

	int ret = WaitForSingleObject(m_hSema, dwTimeout);
	if( ret==WAIT_TIMEOUT ){
		OutputDebugStringA("WaitforSingleObject timeout!\n");
		return 1;
	}
	else if( ret!=0 ){
		char txt[256];
		sprintf(txt, "sema wait error, errno=%d\n", errno);
		OutputDebugStringA( txt );
	}

	return ret;
}

void CSema::ActV()
{
	if (!m_bCreate)
		return;

	if (!ReleaseSemaphore(m_hSema,1,NULL)){
		char txt[256];
		sprintf(txt, "sema release error, errno=%d\n", errno);
		OutputDebugStringA( txt );
	}
}

////////////////////////////////////////////////////////////////////
//CMutextLock
CMutexLock::CMutexLock(bool bCreate)
{
	m_psmMut = new CSema( NULL, 1, bCreate );

	m_psmMut->ActP();
}

CMutexLock::CMutexLock(CSema * pSema, DWORD dwTimeOut)
{
	m_psmMut = pSema;

	m_psmMut->ActP(dwTimeOut);
}

CMutexLock::~CMutexLock()
{
	if( m_psmMut!=NULL )
		m_psmMut->ActV();
}
////////////////////////////////////////////////////////////////////