1/* 2 * Copyright (C) 2014 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "ErrorHandlingScope.h" 28 29#include "Interpreter.h" 30#include "Options.h" 31#include "VM.h" 32 33namespace JSC { 34 35ErrorHandlingScope::ErrorHandlingScope(VM& vm) 36 : m_vm(vm) 37{ 38 RELEASE_ASSERT(m_vm.stackPointerAtVMEntry()); 39 size_t newReservedZoneSize = Options::errorModeReservedZoneSize(); 40 m_savedReservedZoneSize = m_vm.updateReservedZoneSize(newReservedZoneSize); 41#if !ENABLE(JIT) 42 m_vm.interpreter->stack().setReservedZoneSize(newReservedZoneSize); 43#endif 44} 45 46ErrorHandlingScope::~ErrorHandlingScope() 47{ 48 RELEASE_ASSERT(m_vm.stackPointerAtVMEntry()); 49 m_vm.updateReservedZoneSize(m_savedReservedZoneSize); 50#if !ENABLE(JIT) 51 m_vm.interpreter->stack().setReservedZoneSize(m_savedReservedZoneSize); 52#endif 53} 54 55} // namespace JSC 56