36d6188f8c
The kernel now maintains the pthread_internal_t::tid field for us, and __clone was only used in one place so let's inline it so we don't have to leave such a dangerous function lying around. Also rename files to match their content and remove some useless #includes. Change-Id: I24299fb4a940e394de75f864ee36fdabbd9438f9
57 lines
2.3 KiB
C++
57 lines
2.3 KiB
C++
/*
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* Copyright (C) 2008 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <unistd.h>
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#include <sys/syscall.h>
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#include "private/libc_logging.h"
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#include "pthread_internal.h"
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int fork() {
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// POSIX mandates that the timers of a fork child process be
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// disarmed, but not destroyed. To avoid a race condition, we're
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// going to stop all timers now, and only re-start them in case
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// of error, or in the parent process
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__timer_table_start_stop(1);
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__bionic_atfork_run_prepare();
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pthread_internal_t* self = __get_thread();
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int flags = CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID | SIGCHLD;
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#if defined(__x86_64__) // sys_clone's last two arguments are flipped on x86-64.
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int result = syscall(__NR_clone, flags, NULL, NULL, &(self->tid), NULL);
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#else
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int result = syscall(__NR_clone, flags, NULL, NULL, NULL, &(self->tid));
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#endif
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if (result == 0) {
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__bionic_atfork_run_child();
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} else {
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__timer_table_start_stop(0);
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__bionic_atfork_run_parent();
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}
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return result;
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}
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