blob: 67be07e7b53514198299d3b7249b439e32ee56dd [file] [log] [blame]
/*
* Copyright (C) 2017-2019 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. ``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.
*/
#pragma once
#include "DeferGC.h"
#include "DisallowVMReentry.h"
namespace JSC {
class VM;
class JSObject;
#ifdef NDEBUG
class ObjectInitializationScope {
public:
ALWAYS_INLINE ObjectInitializationScope(VM& vm)
: m_vm(vm)
{ }
ALWAYS_INLINE ~ObjectInitializationScope()
{
m_vm.heap.mutatorFence();
}
ALWAYS_INLINE VM& vm() const { return m_vm; }
ALWAYS_INLINE void notifyAllocated(JSObject*, bool) { }
ALWAYS_INLINE void notifyInitialized(JSObject*) { }
private:
VM& m_vm;
};
#else // not NDEBUG
class ObjectInitializationScope {
public:
JS_EXPORT_PRIVATE ObjectInitializationScope(VM&);
JS_EXPORT_PRIVATE ~ObjectInitializationScope();
VM& vm() const { return m_vm; }
void notifyAllocated(JSObject*, bool wasCreatedUninitialized);
void notifyInitialized(JSObject*);
private:
void verifyPropertiesAreInitialized(JSObject*);
VM& m_vm;
DisallowGC m_disallowGC;
DisallowVMReentry m_disallowVMReentry;
JSObject* m_object { nullptr };
};
#endif // NDEBUG
} // namespace JSC