1// Copyright 2010 the V8 project authors. All rights reserved.
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3// modification, are permitted provided that the following conditions are
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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