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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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40 Handle<T>::Handle(T* obj) { | 40 Handle<T>::Handle(T* obj) { |
41 ASSERT(!obj->IsFailure()); | 41 ASSERT(!obj->IsFailure()); |
42 location_ = HandleScope::CreateHandle(obj); | 42 location_ = HandleScope::CreateHandle(obj); |
43 } | 43 } |
44 | 44 |
45 | 45 |
46 template <class T> | 46 template <class T> |
47 inline T* Handle<T>::operator*() const { | 47 inline T* Handle<T>::operator*() const { |
48 ASSERT(location_ != NULL); | 48 ASSERT(location_ != NULL); |
49 ASSERT(reinterpret_cast<Address>(*location_) != kHandleZapValue); | 49 ASSERT(reinterpret_cast<Address>(*location_) != kHandleZapValue); |
50 return *location_; | 50 return *BitCast<T**>(location_); |
51 } | 51 } |
52 | 52 |
53 | 53 |
54 #ifdef DEBUG | 54 #ifdef DEBUG |
55 inline NoHandleAllocation::NoHandleAllocation() { | 55 inline NoHandleAllocation::NoHandleAllocation() { |
56 v8::ImplementationUtilities::HandleScopeData* current = | 56 v8::ImplementationUtilities::HandleScopeData* current = |
57 v8::ImplementationUtilities::CurrentHandleScope(); | 57 v8::ImplementationUtilities::CurrentHandleScope(); |
58 extensions_ = current->extensions; | 58 extensions_ = current->extensions; |
59 // Shrink the current handle scope to make it impossible to do | 59 // Shrink the current handle scope to make it impossible to do |
60 // handle allocations without an explicit handle scope. | 60 // handle allocations without an explicit handle scope. |
61 current->limit = current->next; | 61 current->limit = current->next; |
62 current->extensions = -1; | 62 current->extensions = -1; |
63 } | 63 } |
64 | 64 |
65 | 65 |
66 inline NoHandleAllocation::~NoHandleAllocation() { | 66 inline NoHandleAllocation::~NoHandleAllocation() { |
67 // Restore state in current handle scope to re-enable handle | 67 // Restore state in current handle scope to re-enable handle |
68 // allocations. | 68 // allocations. |
69 v8::ImplementationUtilities::CurrentHandleScope()->extensions = extensions_; | 69 v8::ImplementationUtilities::CurrentHandleScope()->extensions = extensions_; |
70 } | 70 } |
71 #endif | 71 #endif |
72 | 72 |
73 | 73 |
74 } } // namespace v8::internal | 74 } } // namespace v8::internal |
75 | 75 |
76 #endif // V8_HANDLES_INL_H_ | 76 #endif // V8_HANDLES_INL_H_ |
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