4b558f50a4
This is a much simpler implementation that lets the kernel do as much as possible. Co-authored-by: Jörgen Strand <jorgen.strand@sonymobile.com> Co-authored-by: Snild Dolkow <snild.dolkow@sonymobile.com> Change-Id: Iad19f155de977667aea09410266d54e63e8a26bf
50 lines
2 KiB
C++
50 lines
2 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 "pthread_internal.h"
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int fork() {
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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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__bionic_atfork_run_parent();
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}
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return result;
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}
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