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/* 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"
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;
}
/* psm: have no idea why these are here, sjhill? */
#if 0 /*def SHARED*/
pid_t __fork (void)
{
return __libc_fork ();
}
weak_alias (__fork, fork)
pid_t __vfork(void)
{
return __libc_fork ();
}
weak_alias (__vfork, vfork)
#endif
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