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89 lines
2.3 KiB
C++
89 lines
2.3 KiB
C++
/*
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* Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibThreading/Thread.h>
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#include <pthread.h>
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#include <string.h>
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#include <unistd.h>
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namespace Threading {
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Thread::Thread(Function<intptr_t()> action, StringView thread_name)
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: Core::Object(nullptr)
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, m_action(move(action))
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, m_thread_name(thread_name.is_null() ? ""sv : thread_name)
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{
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register_property("thread_name", [&] { return JsonValue { m_thread_name }; });
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#if defined(AK_OS_SERENITY) || defined(AK_OS_LINUX)
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// FIXME: Print out a pretty TID for BSD and macOS platforms, too
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register_property("tid", [&] { return JsonValue { m_tid }; });
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#endif
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}
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Thread::~Thread()
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{
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if (m_tid && !m_detached) {
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dbgln("Destroying thread \"{}\"({}) while it is still running!", m_thread_name, m_tid);
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[[maybe_unused]] auto res = join();
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}
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}
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ErrorOr<void> Thread::set_priority(int priority)
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{
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// MacOS has an extra __opaque field, so list initialization will not compile on MacOS Lagom.
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sched_param scheduling_parameters {};
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scheduling_parameters.sched_priority = priority;
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int result = pthread_setschedparam(m_tid, 0, &scheduling_parameters);
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if (result != 0)
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return Error::from_errno(result);
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return {};
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}
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ErrorOr<int> Thread::get_priority() const
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{
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sched_param scheduling_parameters {};
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int policy;
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int result = pthread_getschedparam(m_tid, &policy, &scheduling_parameters);
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if (result != 0)
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return Error::from_errno(result);
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return scheduling_parameters.sched_priority;
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}
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void Thread::start()
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{
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int rc = pthread_create(
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&m_tid,
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nullptr,
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[](void* arg) -> void* {
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Thread* self = static_cast<Thread*>(arg);
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auto exit_code = self->m_action();
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self->m_tid = 0;
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return reinterpret_cast<void*>(exit_code);
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},
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static_cast<void*>(this));
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VERIFY(rc == 0);
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#ifdef AK_OS_SERENITY
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if (!m_thread_name.is_empty()) {
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rc = pthread_setname_np(m_tid, m_thread_name.characters());
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VERIFY(rc == 0);
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}
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#endif
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dbgln("Started thread \"{}\", tid = {}", m_thread_name, m_tid);
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m_started = true;
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}
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void Thread::detach()
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{
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VERIFY(!m_detached);
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int rc = pthread_detach(m_tid);
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VERIFY(rc == 0);
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m_detached = true;
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}
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}
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