sky/engine/wtf/WTF.cpp

/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 * notice, this list of conditions and the following disclaimer.
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 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
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 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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#include "sky/engine/wtf/WTF.h"

#include "sky/engine/wtf/DefaultAllocator.h"
#include "sky/engine/wtf/FastMalloc.h"

namespace WTF {

extern void initializeThreading();

bool s_initialized;
bool s_shutdown;
bool Partitions::s_initialized;
PartitionAllocatorGeneric Partitions::m_bufferAllocator;

void initialize()
{
    // WTF, and Blink in general, cannot handle being re-initialized, even if shutdown first.
    // Make that explicit here.
    ASSERT(!s_initialized);
    ASSERT(!s_shutdown);
    s_initialized = true;
    Partitions::initialize();
    initializeThreading();
}

void shutdown()
{
    ASSERT(s_initialized);
    ASSERT(!s_shutdown);
    s_shutdown = true;
    Partitions::shutdown();
}

bool isShutdown()
{
    return s_shutdown;
}

void Partitions::initialize()
{
    static int lock = 0;
    // Guard against two threads hitting here in parallel.
    spinLockLock(&lock);
    if (!s_initialized) {
        m_bufferAllocator.init();
        s_initialized = true;
    }
    spinLockUnlock(&lock);
}

void Partitions::shutdown()
{
    fastMallocShutdown();
    m_bufferAllocator.shutdown();
}

} // namespace WTF