Source/JavaScriptCore/heap/DeferGCInlines.h

/*
 * Copyright (C) 2021 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
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 * 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,
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#pragma once

#include "DeferGC.h"
#include "VM.h"

namespace JSC {

inline DeferGC::DeferGC(VM& vm)
    : m_vm(vm)
{
    m_vm.heap.incrementDeferralDepth();
}

inline DeferGC::~DeferGC()
{
    if constexpr (validateDFGDoesGC)
        m_vm.verifyCanGC();
    m_vm.heap.decrementDeferralDepthAndGCIfNeeded();
}

inline DeferGCForAWhile::DeferGCForAWhile(VM& vm)
    : m_heap(vm.heap)
{
    m_heap.incrementDeferralDepth();
}

inline DeferGCForAWhile::~DeferGCForAWhile()
{
    m_heap.decrementDeferralDepth();
}

} // namespace JSC