跨平台开发连载(3_同步互斥锁)
/**********************************************************
* lock.h
* Copyright (C) | 2006-11-9 | by denny <[email protected]>
**********************************************************/
#ifndef LOCK_H
#define LOCK_H
#include <pthread.h>
class CLockableObject
{
public:
CLockableObject(){}
~CLockableObject(){}
virtual void Lock() = 0;
virtual void Unlock() = 0;
};
class CMyMutex: public CLockableObject
{
public:
CMyMutex();
~CMyMutex();
void Lock();
void Unlock();
private:
#ifndef WIN32
pthread_mutex_t m_tMutex;
#else
CRITICAL_SECTION m_CriticalSection;
#endif
};
class CLock
{
public:
CLock(CLockableObject *pLockableObject)
{
m_pLockableObject = pLockableObject;
m_pLockableObject->Lock();
}
~CLock()
{
m_pLockableObject->Unlock();
}
private:
CLockableObject *m_pLockableObject;
};
#endif
/**********************************************************
* lock.cpp
* Copyright (C) | 2006-11-9 | by denny <[email protected]>
**********************************************************/
#include "Lock.h"
CMyMutex::CMyMutex()
{
#ifndef WIN32
pthread_mutex_init(&m_tMutex, NULL);
#else
InitializeCriticalSection(&m_CriticalSection);
#endif
}
CMyMutex::~CMyMutex()
{
#ifndef WIN32
int iResult = pthread_mutex_destroy(&m_tMutex);
if (iResult)
std::cout<<"pthread_mutex_destroy error"<<std::endl;
#else
DeleteCriticalSection(&m_CriticalSection);
#endif
}
bool CMyMutex::Lock()
{
#ifndef WIN32
int iResult = pthread_mutex_lock(&m_tMutex);
if (iResult)
std::cout<<"pthread_mutex_lock error"<<std::endl;
#else
EnterCriticalSection(&m_CriticalSection);
#endif
return true;
}
bool CMyMutex::TryLock()
{
#ifndef WIN32
int iResult = pthread_mutex_trylock(&m_tMutex);
if (iResult)
{
if (iResult == EBUSY)
return false;
std::cout<<"pthread_mutex_trylock error"<<std::endl;
}
#else
//LeaveCriticalSection(&m_CriticalSection);
#endif
return true;
}
bool CMyMutex::Unlock()
{
#ifndef WIN32
int iResult = pthread_mutex_unlock(&m_tMutex);
if (iResult)
std::cout<<"pthread_mutex_unlock error"<<std::endl;
#else
LeaveCriticalSection(&m_CriticalSection);
#endif
return true;
}