mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-05-11 17:37:33 +02:00
02bb892d7a
This commit splits out synchronization primitives from LibThreading into LibSync. This is because LibThreading depends on LibCore, while LibCore needs the synchronization primitives from LibThreading. This worked while they were header only, but when I tried to add an implementation file it ran into the circular dependency. To abstract away the pthread implementation using cpp files is necessary so the synchronization primitives were moved to a separate library.
56 lines
1.2 KiB
C++
56 lines
1.2 KiB
C++
/*
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* Copyright (c) 2026, the Ladybird developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibThreading/ThreadPool.h>
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static constexpr size_t THREAD_COUNT = 4;
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static constexpr size_t THREAD_STACK_SIZE = 8 * MiB;
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namespace Threading {
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ThreadPool& ThreadPool::the()
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{
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static ThreadPool* instance = new ThreadPool;
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return *instance;
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}
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ThreadPool::ThreadPool()
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{
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for (size_t i = 0; i < THREAD_COUNT; ++i) {
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auto name = ByteString::formatted("Pool/{}", i);
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auto thread = Thread::construct(name, [this]() -> intptr_t {
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return worker_thread_func();
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});
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thread->set_stack_size(THREAD_STACK_SIZE);
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thread->start();
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m_threads.append(move(thread));
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}
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}
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intptr_t ThreadPool::worker_thread_func()
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{
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while (true) {
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Function<void()> work;
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{
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Sync::MutexLocker locker(m_mutex);
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m_condition.wait_while([this] { return m_work_queue.is_empty(); });
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work = m_work_queue.dequeue();
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}
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work();
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}
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}
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void ThreadPool::submit(Function<void()> work)
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{
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Sync::MutexLocker locker(m_mutex);
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m_work_queue.enqueue(move(work));
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m_condition.signal();
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}
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}
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