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Serenity Operating System
1/*
2 * Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <LibThread/Thread.h>
28#include <pthread.h>
29#include <unistd.h>
30
31LibThread::Thread::Thread(Function<int()> action, StringView thread_name)
32 : Core::Object(nullptr)
33 , m_action(move(action))
34 , m_thread_name(thread_name.is_null() ? "" : thread_name)
35{
36}
37
38LibThread::Thread::~Thread()
39{
40 if (m_tid) {
41 dbg() << "trying to destroy a running thread!";
42 ASSERT_NOT_REACHED();
43 }
44}
45
46void LibThread::Thread::start()
47{
48 int rc = pthread_create(
49 &m_tid,
50 nullptr,
51 [](void* arg) -> void* {
52 Thread* self = static_cast<Thread*>(arg);
53 size_t exit_code = self->m_action();
54 self->m_tid = 0;
55 pthread_exit((void*)exit_code);
56 return (void*)exit_code;
57 },
58 static_cast<void*>(this));
59
60 ASSERT(rc == 0);
61 if (!m_thread_name.is_empty()) {
62 rc = pthread_setname_np(m_tid, m_thread_name.characters());
63 ASSERT(rc == 0);
64 }
65 dbg() << "Started a thread, tid = " << m_tid;
66}
67
68void LibThread::Thread::quit(void *code)
69{
70 ASSERT(m_tid == pthread_self());
71
72 m_tid = 0;
73 pthread_exit(code);
74}