VideoRecorder/module/common/src/Mutex/Cond.cpp

#include "Cond.h"

Cond::Cond()
{
#if defined(WIN32) && !defined(MINGW)
    InitializeCriticalSection(&m_mutex);
    InitializeConditionVariable(&m_cond);
#else
    pthread_mutex_init(&m_mutex, NULL);
    pthread_cond_init(&m_cond, NULL);
#endif

}

Cond::~Cond()
{
#if defined(WIN32) && !defined(MINGW)
    DeleteCriticalSection(&m_mutex);
#else
    pthread_mutex_destroy(&m_mutex);
    pthread_cond_destroy(&m_cond);
#endif

}

//加锁
int Cond::Lock()
{
#if defined(WIN32) && !defined(MINGW)
    EnterCriticalSection(&m_mutex);
    return 0;
#else
    return pthread_mutex_lock(&m_mutex);
#endif

}

//解锁
int Cond::Unlock()
{
#if defined(WIN32) && !defined(MINGW)
    LeaveCriticalSection(&m_mutex);
    return 0;
#else
    return pthread_mutex_unlock(&m_mutex);
#endif
}

int Cond::Wait(int timeOut)
{
#if defined(WIN32) && !defined(MINGW)
    if (timeOut < 0)
    {
        timeOut = INFINITE;
    }
    DWORD ret = SleepConditionVariableCS((PCONDITION_VARIABLE)&m_cond, &m_mutex, timeOut);
#else
    int ret = pthread_cond_wait(&m_cond, &m_mutex);
#endif

    return ret;

}

//固定时间等待
int Cond::TimedWait(int second)
{
#if defined(WIN32) && !defined(MINGW)
    SleepConditionVariableCS((PCONDITION_VARIABLE)&m_cond, &m_mutex, second*1000);
    return 0;
#else
    struct timespec abstime;
    //获取从当前时间，并加上等待时间， 设置进程的超时睡眠时间
    clock_gettime(CLOCK_REALTIME, &abstime);
    abstime.tv_sec += second;
    return pthread_cond_timedwait(&m_cond, &m_mutex, &abstime);
#endif

}

int Cond::Signal()
{
#if defined(WIN32) && !defined(MINGW)
    int ret = 0;
    WakeConditionVariable((PCONDITION_VARIABLE)&m_cond);
#else
    int ret = pthread_cond_signal(&m_cond);
#endif
    return ret;
}

//唤醒所有睡眠线程
int Cond::Broadcast()
{
#if defined(WIN32) && !defined(MINGW)
    WakeAllConditionVariable((PCONDITION_VARIABLE)&m_cond);
    return 0;
#else
    return pthread_cond_broadcast(&m_cond);
#endif

}