1// Copyright 2010 the V8 project authors. All rights reserved. 2// Redistribution and use in source and binary forms, with or without 3// modification, are permitted provided that the following conditions are 4// met: 5// 6// * Redistributions of source code must retain the above copyright 7// notice, this list of conditions and the following disclaimer. 8// * Redistributions in binary form must reproduce the above 9// copyright notice, this list of conditions and the following 10// disclaimer in the documentation and/or other materials provided 11// with the distribution. 12// * Neither the name of Google Inc. nor the names of its 13// contributors may be used to endorse or promote products derived 14// from this software without specific prior written permission. 15// 16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28#ifndef V8_VM_STATE_H_ 29#define V8_VM_STATE_H_ 30 31#include "allocation.h" 32#include "isolate.h" 33 34namespace v8 { 35namespace internal { 36 37template <StateTag Tag> 38class VMState BASE_EMBEDDED { 39 public: 40 explicit inline VMState(Isolate* isolate); 41 inline ~VMState(); 42 43 private: 44 Isolate* isolate_; 45 StateTag previous_tag_; 46}; 47 48 49class ExternalCallbackScope BASE_EMBEDDED { 50 public: 51 inline ExternalCallbackScope(Isolate* isolate, Address callback); 52 inline ~ExternalCallbackScope(); 53 Address callback() { return callback_; } 54 Address* callback_address() { return &callback_; } 55 ExternalCallbackScope* previous() { return previous_scope_; } 56 inline Address scope_address(); 57 58 private: 59 Isolate* isolate_; 60 Address callback_; 61 ExternalCallbackScope* previous_scope_; 62#ifdef USE_SIMULATOR 63 Address scope_address_; 64#endif 65}; 66 67} } // namespace v8::internal 68 69 70#endif // V8_VM_STATE_H_ 71