clib/hbmutex.h

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/*
 * With permission to reuse:
 * Author:  Thomas Volkert
 * Libary:  Homerbase http://www.homer-conferencing.com/
 * Since:   2010-09-20
 */

#ifndef _BASE_MUTEX_
#define _BASE_MUTEX_

#ifdef _WIN32
        #include <windows.h>
        #include <stdio.h>
        #define OS_DEP_MUTEX HANDLE
#else
        #include <pthread.h>
        #include <stdlib.h>
        #include <errno.h>
        #define OS_DEP_MUTEX pthread_mutex_t*
#endif


class Mutex
{
public:
    Mutex( );

    virtual ~Mutex( );

    /* every function returns TRUE if successful */
    bool lock();
    bool unlock();
    bool tryLock();
    bool tryLock(int pMSecs);

private:
    OS_DEP_MUTEX mPThreadMutex;
};


// Small mod: Guard Class for exception safe lock
class LocalMutex
{
public:
        inline LocalMutex(Mutex* mutex);
        inline ~LocalMutex();
        inline void unlock();
private:
        Mutex* _mutex;
        LocalMutex( LocalMutex& ); 
        LocalMutex& operator=( LocalMutex& );
        LocalMutex(const Mutex*);
};
inline LocalMutex::LocalMutex(Mutex* mutex):_mutex(mutex)
{
        _mutex->lock();
}
inline LocalMutex::~LocalMutex()
{
        _mutex->unlock();
}
inline void LocalMutex::unlock()
{
        if (_mutex != 0)
        {
                _mutex->unlock();
                _mutex = 0;
        }
}

#endif