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/*
* Copyright (C) 2013 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.
*/
#ifndef VMEntryScope_h
#define VMEntryScope_h
#include "Interpreter.h"
#include <wtf/StackBounds.h>
#include <wtf/StackStats.h>
namespace JSC {
class JSGlobalObject;
class VM;
class VMEntryScope {
public:
JS_EXPORT_PRIVATE VMEntryScope(VM&, JSGlobalObject*);
JS_EXPORT_PRIVATE ~VMEntryScope();
JSGlobalObject* globalObject() const { return m_globalObject; }
void setRecompilationNeeded(bool recompileNeeded) { m_recompilationNeeded = recompileNeeded; }
private:
size_t requiredCapacity() const;
VM& m_vm;
StackStats::CheckPoint m_stackCheckPoint;
StackBounds m_stack;
JSGlobalObject* m_globalObject;
// m_prev and m_prevStackLimit may belong to a different thread's stack.
VMEntryScope* m_prev;
void* m_prevStackLimit;
bool m_recompilationNeeded;
};
} // namespace JSC
#endif // VMEntryScope_h
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