Called once when PVM is started. Returns immediately with a message handle. Returns immediately with a message handle. Blocks until operation associated with mid has completed. Returns size of message most recently arrived.
Returns node number of the sender of most recently received message.
Blocks until message has been received into buffer. Blocks until send operation is complete and buffer can be reused. Returns immediately with a message handle. Initialize the lock pointed to by lp. Locks the lock pointed to by lp.