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authorMike Frysinger <vapier@gentoo.org>2005-11-15 03:13:04 +0000
committerMike Frysinger <vapier@gentoo.org>2005-11-15 03:13:04 +0000
commita9f5aa1cc96fc2c71f19a9c3e9dcbee0e78f83ca (patch)
tree2c5d251bdfd06d0a76cec9fc507b1873b4bbbdad /libpthread/linuxthreads/ptfork.c
parentfd6dde5a19092be5bb1990dadd5c595d2ed0b3aa (diff)
rename current stable linuxthreads to linuxthreads.old to prepare for import of latest glibc version
Diffstat (limited to 'libpthread/linuxthreads/ptfork.c')
-rw-r--r--libpthread/linuxthreads/ptfork.c126
1 files changed, 0 insertions, 126 deletions
diff --git a/libpthread/linuxthreads/ptfork.c b/libpthread/linuxthreads/ptfork.c
deleted file mode 100644
index eb544f34b..000000000
--- a/libpthread/linuxthreads/ptfork.c
+++ /dev/null
@@ -1,126 +0,0 @@
-/* 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. */
-
-/* mods for uClibc: removed strong alias and defined funcs properly */
-
-/* The "atfork" stuff */
-
-#include <errno.h>
-
-#ifdef __ARCH_HAS_MMU__
-
-#include <stddef.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include "pthread.h"
-#include "internals.h"
-
-struct handler_list {
- void (*handler)(void);
- struct handler_list * next;
-};
-
-static pthread_mutex_t pthread_atfork_lock = PTHREAD_MUTEX_INITIALIZER;
-static struct handler_list * pthread_atfork_prepare = NULL;
-static struct handler_list * pthread_atfork_parent = NULL;
-static struct handler_list * pthread_atfork_child = NULL;
-
-static void pthread_insert_list(struct handler_list ** list,
- void (*handler)(void),
- struct handler_list * newlist,
- int at_end)
-{
- if (handler == NULL) return;
- if (at_end) {
- while(*list != NULL) list = &((*list)->next);
- }
- newlist->handler = handler;
- newlist->next = *list;
- *list = newlist;
-}
-
-struct handler_list_block {
- struct handler_list prepare, parent, child;
-};
-
-int pthread_atfork(void (*prepare)(void),
- void (*parent)(void),
- void (*child)(void))
-{
- struct handler_list_block * block =
- (struct handler_list_block *) malloc(sizeof(struct handler_list_block));
- if (block == NULL) return ENOMEM;
- pthread_mutex_lock(&pthread_atfork_lock);
- /* "prepare" handlers are called in LIFO */
- pthread_insert_list(&pthread_atfork_prepare, prepare, &block->prepare, 0);
- /* "parent" handlers are called in FIFO */
- pthread_insert_list(&pthread_atfork_parent, parent, &block->parent, 1);
- /* "child" handlers are called in FIFO */
- pthread_insert_list(&pthread_atfork_child, child, &block->child, 1);
- pthread_mutex_unlock(&pthread_atfork_lock);
- return 0;
-}
-//strong_alias (__pthread_atfork, pthread_atfork)
-
-static inline void pthread_call_handlers(struct handler_list * list)
-{
- for (/*nothing*/; list != NULL; list = list->next) (list->handler)();
-}
-
-extern int __libc_fork(void);
-
-pid_t __fork(void)
-{
- pid_t pid;
- struct handler_list * prepare, * child, * parent;
-
- pthread_mutex_lock(&pthread_atfork_lock);
- prepare = pthread_atfork_prepare;
- child = pthread_atfork_child;
- parent = pthread_atfork_parent;
- pthread_mutex_unlock(&pthread_atfork_lock);
- pthread_call_handlers(prepare);
- pid = __libc_fork();
- if (pid == 0) {
- __pthread_reset_main_thread();
- __fresetlockfiles();
- pthread_call_handlers(child);
- } else {
- pthread_call_handlers(parent);
- }
- return pid;
-}
-weak_alias (__fork, fork);
-
-pid_t __vfork(void)
-{
- return __fork();
-}
-weak_alias (__vfork, vfork);
-
-#else
-
-/* We can't support pthread_atfork without MMU, since we don't have
- fork(), and we can't offer the correct semantics for vfork(). */
-int pthread_atfork(void (*prepare)(void),
- void (*parent)(void),
- void (*child)(void))
-{
- /* ENOMEM is probably pushing it a little bit.
- Take it as `no *virtual* memory' :-) */
- errno = ENOMEM;
- return -1;
-}
-
-#endif