viengoos/

2008-06-22  Neal H. Walfield  <neal@gnu.org>

	* thread.h: Include "list.h".
	(struct thread) [! NDEBUG]: Add field futex_waiter_node.
	[! NDEBUG]: Instantiate the futex_waiter list class.
	(futex_waiters) [! NDEBUG]: Declare.
	* server.c (futex_waiters) [! NDEBUG]: New variable.
	(server_loop) [! NDEBUG]: If we don't get an RPC for a while,
	dequeue all thread's enqueued on FUTEX_WAITERS and return EDEADLK.
	When blocking a thread on a futex, add THREAD to FUTEX_WAITERS.
	* object.c (object_wait_queue_dequeue) [! NDEBUG]: If
	THREAD->WAIT_REASON is THREAD_WAIT_FUTEX, unlink THREAD from
	FUTEX_WAITERS.

hurd/

2008-06-22  Neal H. Walfield  <neal@gnu.org>

	* futex.h [! RM_INTERN]: Include <errno.h>.
	(futex_wait): On error, set ERRNO and return -1.
	(futex_timed_wait): Likewise.
	(futex_wake): Likewise.
	* mutex.h (ss_mutex_lock): If FUTEX_WAIT returns failure, print
	some debugging information.

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