作者在 2010-07-10 00:04:15 发布以下内容
Linux下线程的挂起和恢复
POSIX的Linux操作系统没有提供线程挂起和恢复的例程,在网上找了找,看到一个老外写的程序,感觉想法不错,放在这里大家分享一下。理
论上应该可以实现,不过我没有试,给大家提供一个参考。 (在读取缓存里的数据时,当缓存中没有数据最好把
线程挂起)
void CPrcThread <Worker>::suspend()
{
ifdef WIN32
//do windows specific things here...
#endif
#ifdef __linux__
pthread_mutex_lock(&mutex);
flag--;
pthread_mutex_unlock(&mutex);
#endif
}
void CPrcThread <Worker>::resume()
{
#ifdef WIN32
//do windows specific things here...
#endif
#ifdef __linux__
pthread_mutex_lock(&mutex);
flag++;
pthread_cond_signal(&cond);
pthread_mutex_unlock(&mutex);
#endif
}
void* CPrcThread <Worker>::threadFunc(void* pParameter)
{
while(1)
{
#ifdef WIN32
//do windows specific things here...
//no member variables accessed here so its ok...
#endif
#ifdef __linux__
pthread_mutex_lock(&mutex);
while(flag <= 0)
{
pthread_cond_wait(&cond, &mutex);
}
pthread_mutex_unlock(&mutex);
#endif
//actual thread work here
}
}
void CPrcThread <Worker>::suspend()
{
ifdef WIN32
//do windows specific things here...
#endif
#ifdef __linux__
pthread_mutex_lock(&mutex);
flag--;
pthread_mutex_unlock(&mutex);
#endif
}
void CPrcThread <Worker>::resume()
{
#ifdef WIN32
//do windows specific things here...
#endif
#ifdef __linux__
pthread_mutex_lock(&mutex);
flag++;
pthread_cond_signal(&cond);
pthread_mutex_unlock(&mutex);
#endif
}
void* CPrcThread <Worker>::threadFunc(void* pParameter)
{
while(1)
{
#ifdef WIN32
//do windows specific things here...
//no member variables accessed here so its ok...
#endif
#ifdef __linux__
pthread_mutex_lock(&mutex);
while(flag <= 0)
{
pthread_cond_wait(&cond, &mutex);
}
pthread_mutex_unlock(&mutex);
#endif
//actual thread work here
}
}