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/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <unistd.h>
#include "pthread_internal.h"
#include "bionic_pthread.h"
#include "cpuacct.h"
extern int __fork(void);
int fork(void)
{
int ret;
/* Posix mandates that the timers of a fork child process be
* disarmed, but not destroyed. To avoid a race condition, we're
* going to stop all timers now, and only re-start them in case
* of error, or in the parent process
*/
__timer_table_start_stop(1);
__bionic_atfork_run_prepare();
ret = __fork();
if (ret != 0) { /* not a child process */
__timer_table_start_stop(0);
__bionic_atfork_run_parent();
} else {
// Fix the tid in the pthread_internal_t struct after a fork.
__pthread_settid(pthread_self(), gettid());
/*
* Newly created process must update cpu accounting.
* Call cpuacct_add passing in our uid, which will take
* the current task id and add it to the uid group passed
* as a parameter.
*/
cpuacct_add(getuid());
__bionic_atfork_run_child();
}
return ret;
}
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