/*----------------------------------------------------------------------
| NPT_PSPQueue::Pop
+---------------------------------------------------------------------*/
NPT_Result
NPT_PSPQueue::Pop(NPT_QueueItem*& item, NPT_Boolean blocking)
{
// lock the mutex that protects the list
m_Items.Lock();
NPT_Result result;
//if (blocking) {
// while ((result = m_Items.PopHead(item)) == NPT_ERROR_LIST_EMPTY) {
// // no item in the list, wait for one
// //NPT_Debug(":: NPT_PSPQueue::Pop - waiting for queue to fill up\n");
// pthread_cond_wait(&m_CanPushOrPopCondition, &m_Mutex);
// }
//} else {
result = m_Items.PopHead(item);
//}
// if the list was previously full, signal the condition
// to wake up the waiting thread
//if (m_MaxItems && (result == NPT_SUCCESS)) {
// if (m_Items.GetItemCount() == m_MaxItems-1) {
// pthread_cond_signal(&m_CanPushOrPopCondition);
// }
//}
// unlock the mutex
m_Items.Unlock();
return result;
}
/*----------------------------------------------------------------------
| NPT_PSPQueue::Push
+---------------------------------------------------------------------*/
NPT_Result
NPT_PSPQueue::Push(NPT_QueueItem* item)
{
// lock the mutex that protects the list
m_Items.Lock();
// check that we have not exceeded the max
//if (m_MaxItems) {
// while (m_Items.GetItemCount() >= m_MaxItems) {
// // wait until some items have been removed
// //NPT_Debug(":: NPT_PSPQueue::Push - waiting for queue to empty\n");
// pthread_cond_wait(&m_CanPushOrPopCondition, &m_Mutex);
// }
//}
// add the item to the list
m_Items.Add(item);
// if the list was previously empty, signal the condition
// to wake up the waiting thread
//if (m_Items.GetItemCount() == 1) {
// pthread_cond_signal(&m_CanPushOrPopCondition);
//}
// unlock the mutex
m_Items.Unlock();
return NPT_SUCCESS;
}
