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author | Ulrich Drepper <drepper@redhat.com> | 2002-12-31 08:00:19 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2002-12-31 08:00:19 +0000 |
commit | 416d2de60b8e567ac7cd6a581afba0f5cdfc932e (patch) | |
tree | abd37640e253dae0e65751ea12f20253830bb269 /linuxthreads/sysdeps/unix/sysv/linux/register-atfork.c | |
parent | 89d6e4445954aee95d02b84db7af7fa0cca93195 (diff) | |
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Update.
2002-12-30 Ulrich Drepper <drepper@redhat.com>
* malloc/thread-m.h (thread_atfork): Define using __register_atfork.
Diffstat (limited to 'linuxthreads/sysdeps/unix/sysv/linux/register-atfork.c')
-rw-r--r-- | linuxthreads/sysdeps/unix/sysv/linux/register-atfork.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/linuxthreads/sysdeps/unix/sysv/linux/register-atfork.c b/linuxthreads/sysdeps/unix/sysv/linux/register-atfork.c new file mode 100644 index 0000000000..2dce262a38 --- /dev/null +++ b/linuxthreads/sysdeps/unix/sysv/linux/register-atfork.c @@ -0,0 +1,87 @@ +/* Copyright (C) 2002 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <stdlib.h> +#include "fork.h" + + +int +__register_atfork (prepare, parent, child, dso_handle) + void (*prepare) (void); + void (*parent) (void); + void (*child) (void); + void *dso_handle; +{ + struct fork_handler *new_prepare = NULL; + struct fork_handler *new_parent = NULL; + struct fork_handler *new_child = NULL; + + if (prepare != NULL) + { + new_prepare = (struct fork_handler *) malloc (sizeof (*new_prepare)); + if (new_prepare == NULL) + goto out1; + + new_prepare->handler = prepare; + new_prepare->dso_handle = dso_handle; + } + + if (parent != NULL) + { + new_parent = (struct fork_handler *) malloc (sizeof (*new_parent)); + if (new_parent == NULL) + goto out2; + + new_parent->handler = parent; + new_parent->dso_handle = dso_handle; + } + + if (child != NULL) + { + new_child = (struct fork_handler *) malloc (sizeof (*new_child)); + if (new_child == NULL) + { + free (new_parent); + out2: + free (new_prepare); + out1: + return errno; + } + + new_child->handler = child; + new_child->dso_handle = dso_handle; + } + + /* Get the lock to not conflict with running forks. */ + __libc_lock_lock (__fork_block.lock); + + /* Now that we have all the handlers allocate enqueue them. */ + if (new_prepare != NULL) + list_add_tail (&new_prepare->list, &__fork_block.prepare_list); + if (new_parent != NULL) + list_add_tail (&new_parent->list, &__fork_block.parent_list); + if (new_child != NULL) + list_add_tail (&new_child->list, &__fork_block.child_list); + + /* Release the lock. */ + __libc_lock_unlock (__fork_block.lock); + + return 0; +} |