2008-08-16 Neal H. Walfield <neal@gnu.org>

	* pthread/pt-alloc.c: Don't include <bits/atomic.h>.
	(__pthread_free_threads): Change to a struct __pthread *.
	(__pthread_free_threads_lock): New variable.
	(__pthread_alloc): When looking for a TCB to reuse, iterate over
	__pthread_free_threads taking the first for which the STATE field
	is PTHREAD_TERMINATED.  When reusing a TCB, first call
	__pthread_thread_halt on it.
	* pthread/pt-dealloc.c: Don't include <bits/atomic.h>.
	(__pthread_free_threads): Change to a struct __pthread *.
	(__pthread_free_threads_lock): New declaration.
	(__pthread_dealloc): Enqueue PTHREAD on __PTHREAD_FREE_THREADS.
	Set PTHREAD->STATE to PTHREAD_TERMINATED after everything else.
	* pthread/pt-join.c (pthread_join): Call __pthread_thread_halt
	before destroying the thread.  When destroying the thread, call
	__pthread_thread_dealloc on it.
	* pthread/pt-detach.c (pthread_detach): If destroying the thread,
	call __pthread_thread_halt before deallocating the stack.  In this
	case, also call __pthread_thread_dealloc on the tcb.
	* pthread/pt-exit.c (pthread_exit): Call __pthread_dealloc only if
	the thread is detached and then as the last thing we do before
	calling __pthread_thread_halt.
	* pthread/pt-internal.h (__pthread_thread_halt): Remove argument
	NEED_DEALLOC.  Update users.
	* sysdeps/mach/pt-thread-halt.c (__pthread_thread_halt): Remove
	argument need_dealloc.
	* sysdeps/mach/hurd/pt-sysdep.h (PTHREAD_SYSDEP_MEMBERS): Add field
	have_kernel_resources.
	* sysdeps/mach/hurd/pt-thread-alloc.c (__pthread_thread_alloc): If
	THREAD->HAVE_KERNEL_RESOURCES is true, just return.  After
	allocating the resources, set THREAD->HAVE_KERNEL_RESOURCES to
	true.

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