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2002-12-12 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/fork-gen.c: Renamed to... * sysdeps/unix/sysv/linux/libc_pthread_init.c: ...this. Initialize __libc_locking_needed. * init.c (__pthread_initialize_minimal): Call __libc_pthread_init instead of __register_pthread_fork_handler. * sysdeps/pthread/bits/libc-lock.h: Declare __libc_locking_needed. * sysdeps/unix/sysv/linux/Makefile (sysdep_routimes): Replace fork-gen with libc_pthread_init. * sysdeps/unix/sysv/linux/Versions: Use __libc_pthread_init instead of __register_pthread_fork_handler. * sysdeps/unix/sysv/linux/fork.h: Declare __libc_pthread_init instead of __register_pthread_fork_handler. * sysdeps/unix/sysv/linux/i386/lowlevellock.h: Use __libc_locking_needed to determine whether lock prefix can be avoided. * sysdeps/unix/sysv/linux/i386/i486/libc-lowlevellock.S: Likewise.
48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
/* Copyright (C) 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <list.h>
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#include "fork.h"
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#include <bits/libc-lock.h>
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static struct fork_handler pthread_child_handler;
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/* Global variable signalled when locking is needed. */
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int __libc_locking_needed;
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void
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__libc_pthread_init (ptr, reclaim)
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unsigned long int *ptr;
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void (*reclaim) (void);
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{
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/* Remember the pointer to the generation counter in libpthread. */
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__fork_generation_pointer = ptr;
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/* Called by a child after fork. */
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pthread_child_handler.handler = reclaim;
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/* The fork handler needed by libpthread. */
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list_add_tail (&pthread_child_handler.list, &__fork_child_list);
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/* Signal the internal locking code that locking is needed now. */
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__libc_locking_needed = 1;
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}
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