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 34 namespace v8 { 35 namespace internal { 36 37 template <StateTag Tag> 38 class 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 49 class 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
