JavaScriptCore/kjs/InitializeThreading.cpp

/*
 * Copyright (C) 2008 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer. 
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 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution. 
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 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE 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
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 */

#include "config.h"
#include "InitializeThreading.h"

#include "collector.h"
#include "DateMath.h"
#include "dtoa.h"
#include "identifier.h"
#include "JSGlobalObject.h"
#include "ustring.h"
#include <wtf/Threading.h>

namespace KJS {

#if PLATFORM(DARWIN)
static pthread_once_t initializeThreadingKeyOnce = PTHREAD_ONCE_INIT;
#endif

static void initializeThreadingOnce()
{
    WTF::initializeThreading();
#if USE(MULTIPLE_THREADS)
    s_dtoaP5Mutex = new Mutex;
    JSGlobalData::threadInstance();
    UString::null();
    initDateMath();
#endif
}

void initializeThreading()
{
#if PLATFORM(DARWIN) && USE(MULTIPLE_THREADS)
    pthread_once(&initializeThreadingKeyOnce, initializeThreadingOnce);

    // FIXME: do we want heap introspector to work on other threads?
    if (pthread_main_np())
       JSGlobalData::threadInstance().heap->initializeHeapIntrospector();
#else
    static bool initializedThreading = false;
    if (!initializedThreading) {
        initializeThreadingOnce();
        initializedThreading = true;
    }
#endif
}

}