/*
 * Copyright (C) 2017 Yusuke Suzuki <utatane.tea@gmail.com>.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"
#include <wtf/ThreadGroup.h>

#include <wtf/NeverDestroyed.h>

namespace WTF {

ThreadGroup::~ThreadGroup()
{
    auto locker = holdLock(m_lock);
    for (auto& thread : m_threads)
        thread->removeFromThreadGroup(locker, *this);
}

ThreadGroupAddResult ThreadGroup::add(const AbstractLocker& locker, Thread& thread)
{
    return thread.addToThreadGroup(locker, *this);
}

ThreadGroupAddResult ThreadGroup::add(Thread& thread)
{
    auto locker = holdLock(m_lock);
    return add(locker, thread);
}

ThreadGroupAddResult ThreadGroup::addCurrentThread()
{
    auto result = add(Thread::current());
    ASSERT(result != ThreadGroupAddResult::NotAdded);
    return result;
}

} // namespace WTF