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2005-10-01 Ulrich Drepper <drepper@redhat.com>

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Jakub Jelinek  <jakub@redhat.com>

	* descr.h: Define SETXID_BIT and SETXID_BITMASK.  Adjust
	CANCEL_RESTMASK.
	(struct pthread): Move specific_used field to avoid padding.
	Add setxid_futex field.
	* init.c (sighandler_setxid): Reset setxid flag and release the
	setxid futex.
	* allocatestack.c (setxid_signal_thread): New function.  Broken
	out of the bodies of the two loops in __nptl_setxid.  For undetached
	threads check whether they are exiting and if yes, don't send a signal.
	(__nptl_setxid): Simplify loops by using setxid_signal_thread.
	* pthread_create.c (start_thread): For undetached threads, check
	whether setxid bit is set.  If yes, wait until signal has been
	processed.

	* allocatestack.c (STACK_VARIABLES): Initialize them.
	* pthread_create.c (__pthread_create_2_1): Initialize pd.
This commit is contained in:
Ulrich Drepper
2005-10-01 17:20:34 +00:00
parent 2ff89ea46f
commit dff9a7a163
5 changed files with 102 additions and 50 deletions
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11
nptl/init.c
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@@ -1,4 +1,4 @@
/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
/* Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -211,6 +211,15 @@ sighandler_setxid (int sig, siginfo_t *si, void *ctx)
if (atomic_decrement_val (&__xidcmd->cntr) == 0)
lll_futex_wake (&__xidcmd->cntr, 1);
/* Reset the SETXID flag. */
struct pthread *self = THREAD_SELF;
int flags = THREAD_GETMEM (self, cancelhandling);
THREAD_SETMEM (self, cancelhandling, flags & ~SETXID_BITMASK);
/* And release the futex. */
self->setxid_futex = 1;
lll_futex_wake (&self->setxid_futex, 1);
}