Method tryPopFront

Engine/source/platform/threads/threadSafeDeque.h:406–437

template< typename T >
bool ThreadSafeDeque< T >::tryPopFront( ValueType& outValue )
{
   NodeRef oldHead;

   while( 1 )
   {
      oldHead = getHead();
      if( !oldHead )
         return false;

      // Try to claim the node.

      if( oldHead->mPrev.trySetFromTo( NULL, NULL, NodeRef::TAG_SetOrFail ) )
      {
         if( dCompareAndSwap( oldHead->mIsClaimed, 0, 1 ) )
            break;
         else
            continue;
      }
   }

   outValue = oldHead->mValue;
   oldHead = NULL;

   // Cleanup.
   getHead();

#ifdef TORQUE_DEBUG
   dFetchAndAdd( mNumValues, -1 );
#endif
   return true;
}

template< typename T >
bool ThreadSafeDeque< T >::tryPopBack( ValueType& outValue )