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authorMike Frysinger <vapier@gentoo.org>2006-01-31 05:05:15 +0000
committerMike Frysinger <vapier@gentoo.org>2006-01-31 05:05:15 +0000
commitcccc549ced940c85039c8ce263c8bb571f244afd (patch)
treeef77a870db7211ad6f511867fc56ee1a1a8b4c18 /libpthread/linuxthreads/ptfork.c
parente73b1211737842732951f9b9049294ef732e1ef0 (diff)
initial import of latest linuxthreads
Diffstat (limited to 'libpthread/linuxthreads/ptfork.c')
-rw-r--r--libpthread/linuxthreads/ptfork.c93
1 files changed, 93 insertions, 0 deletions
diff --git a/libpthread/linuxthreads/ptfork.c b/libpthread/linuxthreads/ptfork.c
new file mode 100644
index 000000000..9cdbb5436
--- /dev/null
+++ b/libpthread/linuxthreads/ptfork.c
@@ -0,0 +1,93 @@
+/* Linuxthreads - a simple clone()-based implementation of Posix */
+/* threads for Linux. */
+/* Copyright (C) 1996 Xavier Leroy (Xavier.Leroy@inria.fr) */
+/* */
+/* This program is free software; you can redistribute it and/or */
+/* modify it under the terms of the GNU Library General Public License */
+/* as published by the Free Software Foundation; either version 2 */
+/* of the License, or (at your option) any later version. */
+/* */
+/* This program 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 Library General Public License for more details. */
+
+/* The "atfork" stuff */
+
+#include <errno.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include "pthread.h"
+#include "internals.h"
+#include <bits/libc-lock.h>
+#include "fork.h"
+
+extern int __libc_fork (void);
+
+pid_t __pthread_fork (struct fork_block *b)
+{
+ pid_t pid;
+ list_t *runp;
+
+ __libc_lock_lock (b->lock);
+
+ /* Run all the registered preparation handlers. In reverse order. */
+ list_for_each_prev (runp, &b->prepare_list)
+ {
+ struct fork_handler *curp;
+ curp = list_entry (runp, struct fork_handler, list);
+ curp->handler ();
+ }
+
+ __pthread_once_fork_prepare();
+ __flockfilelist();
+
+ pid = ARCH_FORK ();
+
+ if (pid == 0) {
+ __pthread_reset_main_thread();
+
+ __fresetlockfiles();
+ __pthread_once_fork_child();
+
+ /* Run the handlers registered for the child. */
+ list_for_each (runp, &b->child_list)
+ {
+ struct fork_handler *curp;
+ curp = list_entry (runp, struct fork_handler, list);
+ curp->handler ();
+ }
+
+ __libc_lock_init (b->lock);
+ } else {
+ __funlockfilelist();
+ __pthread_once_fork_parent();
+
+ /* Run the handlers registered for the parent. */
+ list_for_each (runp, &b->parent_list)
+ {
+ struct fork_handler *curp;
+ curp = list_entry (runp, struct fork_handler, list);
+ curp->handler ();
+ }
+
+ __libc_lock_unlock (b->lock);
+ }
+
+ return pid;
+}
+
+#ifdef SHARED
+pid_t __fork (void)
+{
+ return __libc_fork ();
+}
+weak_alias (__fork, fork);
+
+pid_t __vfork(void)
+{
+ return __libc_fork ();
+}
+weak_alias (__vfork, vfork);
+#endif