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Update.

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* sysdeps/pthread/createthread.c (do_clone): If __ASSUME_CLONE_STOPPED
	is not defined, do explicit synchronization.
	(create_thread): Do not lock pd->lock here.  If __ASSUME_CLONE_STOPPED
	is not defined also unlock pd->lock for non-debugging case in case
	it is necessary.
	* pthread_create.c (start_thread): Always get and release pd->lock
	if __ASSUME_CLONE_STOPPED is not defined.
	(start_thread_debug): Removed.  Adjust users.
	* allocatestack.c (allocate_stack): Always initialize lock if
	__ASSUME_CLONE_STOPPED is not defined.
	* Makefile (tests): Add tst-sched1.
	* tst-sched1.c: New file.
This commit is contained in:
Ulrich Drepper
2003-08-03 06:47:02 +00:00
parent 0cbc6c4eba
commit f1205aa71f
6 changed files with 167 additions and 35 deletions
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13
nptl/allocatestack.c
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@ -308,7 +308,7 @@ allocate_stack (const struct pthread_attr *attr, struct pthread **pdp,
/* The first TSD block is included in the TCB. */
pd->specific[0] = pd->specific_1stblock;
#if LLL_LOCK_INITIALIZER != 0
#if defined __ASSUME_CLONE_STOPPED && LLL_LOCK_INITIALIZER != 0
/* Initialize the lock. */
pd->lock = LLL_LOCK_INITIALIZER;
#endif
@ -451,7 +451,7 @@ allocate_stack (const struct pthread_attr *attr, struct pthread **pdp,
descriptor. */
pd->specific[0] = pd->specific_1stblock;
#if LLL_LOCK_INITIALIZER != 0
#if defined __ASSUME_CLONE_STOPPED && LLL_LOCK_INITIALIZER != 0
/* Initialize the lock. */
pd->lock = LLL_LOCK_INITIALIZER;
#endif
@ -564,6 +564,13 @@ allocate_stack (const struct pthread_attr *attr, struct pthread **pdp,
}
}
#ifndef __ASSUME_CLONE_STOPPED
/* Initialize the lock. We have to do this unconditionally if the
CLONE_STOPPED flag is not available since then the stillborn
thread could be canceled while the lock is taken. */
pd->lock = LLL_LOCK_INITIALIZER;
#endif
/* We place the thread descriptor at the end of the stack. */
*pdp = pd;
@ -744,7 +751,7 @@ __pthread_init_static_tls (struct link_map *map)
/* Now the list with threads using user-allocated stacks. */
list_for_each (runp, &__stack_user)
init_one_static_tls (list_entry (runp, struct pthread, list), map);
init_one_static_tls (list_entry (runp, struct pthread, list), map);
lll_unlock (stack_cache_lock);
}