status_t get(private_job_queue_t *this, job_t **job)
{
int count;
+ int oldstate;
pthread_mutex_lock(&(this->mutex));
- // add mutex unlock handler for cancellation
- pthread_cleanup_push((void(*)(void*))pthread_mutex_unlock, (void*)&(this->mutex));
- // go to wait while no jobs available
+ /* go to wait while no jobs available */
this->list->get_count(this->list,&count);
while(count == 0)
{
+ /* add mutex unlock handler for cancellation, enable cancellation */
+ pthread_cleanup_push((void(*)(void*))pthread_mutex_unlock, (void*)&(this->mutex));
+ pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &oldstate);
pthread_cond_wait( &(this->condvar), &(this->mutex));
+
+ /* reset cancellation, remove mutex-unlock handler (without executing) */
+ pthread_setcancelstate(oldstate, NULL);
+ pthread_cleanup_pop(0);
this->list->get_count(this->list,&count);
}
- // remove mutex-unlock handler (without executing)
- pthread_cleanup_pop(0);
-
this->list->remove_first(this->list,(void **) job);
pthread_mutex_unlock(&(this->mutex));
return SUCCESS;
void job_processing(private_thread_pool_t *this)
{
+ /* cancellation disabled by default */
+ pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
+
for (;;) {
job_t *job;
job_queue->get(job_queue, &job);
this->pool_size = pool_size;
this->threads = alloc_bytes(sizeof(pthread_t) * pool_size, "pthread_t[] of private_thread_pool_t");
+
/* try to create as many threads as possible, up tu pool_size */
for (current = 0; current < pool_size; current++) {
if (pthread_create(&(this->threads[current]), NULL, (void*(*)(void*))job_processing, this)) {