void *thread_routine(void *arg)
{
struct timespec abstime;
int timeout;
printf("thread 0x%0x is starting\n",(int)pthread_self());
threadpool_t *pool = (threadpool_t *)arg;
while(1)
{
timeout = 0;
condition_lock(&pool -> ready);
pool -> idle++;
//等待队列有任务到来或者线程池销毁的通知
while(pool -> first == NULL && !pool -> quit)
{
printf("thread 0x%0x is waiting\n",(int)pthread_self());
clock_gettime(CLOCK_REALTIME,&abstime);
abstime.tv_sec += 2;
int status=condition_timewait(&pool -> ready,&abstime);
if(status == ETIMEDOUT)
{
printf("thread 0x%0x is wait timed out\n",(int)pthread_self());
timeout = 1;
break;
}
}
//等到到条件，处于工作状态
pool -> idle--;
if(pool -> first != NULL)
{
task_t *t = pool -> first;
pool -> first = t -> next;
//需要先解锁，以便添加新任务。其他消费者线程能够进入等待任务。
condition_unlock(&pool -> ready);
t -> run(t->arg);
free(t);
condition_lock(&pool -> ready);
}
//等待线程池销毁的通知
if(pool -> quit && pool ->first == NULL)
{
pool -> counter--;
if(pool->counter == 0)
{
condition_signal(&pool -> ready);
}
condition_unlock(&pool->ready);
//跳出循环之前要记得解锁
break;
}
if(timeout &&pool -> first ==NULL)
{
pool -> counter--;
condition_unlock(&pool->ready);
//跳出循环之前要记得解锁
break;
}
condition_unlock(&pool -> ready);
}
printf("thread 0x%0x is exiting\n",(int)pthread_self());
return NULL;
}
void* thread_routine(void* arg)
{
struct timespec abstime;
int timeout;
printf("thread 0x%x is starting ...\n", (int)pthread_self());
threadpool_t* pool = (threadpool_t*)arg;
while(1)
{
timeout = 0;
condition_lock(&pool->ready);
pool->idle++;
while(pool->first == NULL && !pool->quit)
{
printf("thread 0x%x is waiting ...\n", (int)pthread_self());
clock_gettime(CLOCK_REALTIME, &abstime);
abstime.tv_sec += 2;
int status = condition_timewait(&pool->ready, &abstime);
if(status == ETIMEDOUT)
{
printf("thread 0x%x is wait timed out ...\n", (int)pthread_self());
timeout = 1;
break;
}
}
pool->idle--;
if(pool->first != NULL)
{
task_t* t = pool->first;
pool->first = t->next;
condition_unlock(&pool->ready);
t->run(t->arg);
free(t);
condition_lock(&pool->ready);
}
if(pool->quit && pool->first == NULL)
{
if(--pool->counter == 0)
condition_signal(&pool->ready);
condition_unlock(&pool->ready);
break;
}
if(timeout && pool->first == NULL)
{
pool->counter--;
condition_unlock(&pool->ready);
break;
}
condition_unlock(&pool->ready);
}
printf("thread 0x%x is exiting ...\n", (int)pthread_self());
return NULL;
}
