Tools/jsc-cli/jsc-cli/RunLoopThread.m

/*
 * Copyright (C) 2014 Apple Inc. All rights reserved.
 *
 * 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. AND ITS CONTRIBUTORS ``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 ITS 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.
 */

#import "RunLoopThread.h"
#import <pthread.h>

@implementation RunLoopThread {
    pthread_t m_thread;
    pthread_mutex_t m_lock;
    pthread_cond_t m_condition;
    bool m_loopInitialized;
}

+ (ThreadMainType)threadMain
{
    return 0;
}

- (id)init
{
    self = [super init];
    if (!self)
        return nil;
    
    m_loopInitialized = false;
        
    pthread_mutex_init(&m_lock, NULL);
    pthread_cond_init(&m_condition, NULL);
    
    return self;
}

- (void)dealloc
{
    pthread_mutex_destroy(&m_lock);
    pthread_cond_destroy(&m_condition);
}

- (void)didFinishRunLoopInitialization
{
    pthread_mutex_lock(&m_lock);
    m_loopInitialized = true;
    pthread_cond_signal(&m_condition);
    pthread_mutex_unlock(&m_lock);
}

- (void)start
{
    pthread_create(&m_thread, NULL, [[self class] threadMain], (__bridge void *)(self));
    
    pthread_mutex_lock(&m_lock);
    while (!m_loopInitialized)
        pthread_cond_wait(&m_condition, &m_lock);
    pthread_mutex_unlock(&m_lock);
}

- (void)join
{
    void* result;
    pthread_join(m_thread, &result);
}

@end