1 // Copyright 2010 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef V8_VM_STATE_H_ 6 #define V8_VM_STATE_H_ 7 8 #include "src/allocation.h" 9 #include "src/isolate.h" 10 11 namespace v8 { 12 namespace internal { 13 14 template <StateTag Tag> 15 class VMState BASE_EMBEDDED { 16 public: 17 explicit inline VMState(Isolate* isolate); 18 inline ~VMState(); 19 20 private: 21 Isolate* isolate_; 22 StateTag previous_tag_; 23 }; 24 25 26 class ExternalCallbackScope BASE_EMBEDDED { 27 public: 28 inline ExternalCallbackScope(Isolate* isolate, Address callback); 29 inline ~ExternalCallbackScope(); 30 Address callback() { return callback_; } 31 Address* callback_address() { return &callback_; } 32 ExternalCallbackScope* previous() { return previous_scope_; } 33 inline Address scope_address(); 34 35 private: 36 Isolate* isolate_; 37 Address callback_; 38 ExternalCallbackScope* previous_scope_; 39 #ifdef USE_SIMULATOR 40 Address scope_address_; 41 #endif 42 }; 43 44 } } // namespace v8::internal 45 46 47 #endif // V8_VM_STATE_H_ 48
