220b99bdc1
Some code like in https://buganizer.corp.google.com/u/0/issues/19942911 need to change first.
This reverts commit 03324780aa.
Change-Id: I13ff1e5b3d0672bae9cde234ffba32fbbf33d338
92 lines
3.1 KiB
C++
92 lines
3.1 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 "pthread_internal.h"
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/mman.h>
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#include "private/bionic_futex.h"
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#include "private/bionic_tls.h"
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#include "private/libc_logging.h"
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#include "private/ScopedPthreadMutexLocker.h"
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static pthread_internal_t* g_thread_list = NULL;
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static pthread_mutex_t g_thread_list_lock = PTHREAD_MUTEX_INITIALIZER;
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pthread_t __pthread_internal_add(pthread_internal_t* thread) {
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ScopedPthreadMutexLocker locker(&g_thread_list_lock);
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// We insert at the head.
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thread->next = g_thread_list;
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thread->prev = NULL;
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if (thread->next != NULL) {
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thread->next->prev = thread;
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}
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g_thread_list = thread;
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return reinterpret_cast<pthread_t>(thread);
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}
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void __pthread_internal_remove(pthread_internal_t* thread) {
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ScopedPthreadMutexLocker locker(&g_thread_list_lock);
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if (thread->next != NULL) {
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thread->next->prev = thread->prev;
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}
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if (thread->prev != NULL) {
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thread->prev->next = thread->next;
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} else {
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g_thread_list = thread->next;
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}
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}
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static void __pthread_internal_free(pthread_internal_t* thread) {
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if (thread->mmap_size != 0) {
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// Free mapped space, including thread stack and pthread_internal_t.
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munmap(thread->attr.stack_base, thread->mmap_size);
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}
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}
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void __pthread_internal_remove_and_free(pthread_internal_t* thread) {
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__pthread_internal_remove(thread);
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__pthread_internal_free(thread);
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}
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pthread_internal_t* __pthread_internal_find(pthread_t thread_id) {
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pthread_internal_t* thread = reinterpret_cast<pthread_internal_t*>(thread_id);
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ScopedPthreadMutexLocker locker(&g_thread_list_lock);
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for (pthread_internal_t* t = g_thread_list; t != NULL; t = t->next) {
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if (t == thread) {
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return thread;
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}
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}
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return NULL;
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}
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