| OLD | NEW |
| 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 |
| (...skipping 26 matching lines...) Expand all Loading... |
| 37 // A Handle provides a reference to an object that survives relocation by | 37 // A Handle provides a reference to an object that survives relocation by |
| 38 // the garbage collector. | 38 // the garbage collector. |
| 39 // Handles are only valid within a HandleScope. | 39 // Handles are only valid within a HandleScope. |
| 40 // When a handle is created for an object a cell is allocated in the heap. | 40 // When a handle is created for an object a cell is allocated in the heap. |
| 41 | 41 |
| 42 template<class T> | 42 template<class T> |
| 43 class Handle { | 43 class Handle { |
| 44 public: | 44 public: |
| 45 INLINE(explicit Handle(T** location)) { location_ = location; } | 45 INLINE(explicit Handle(T** location)) { location_ = location; } |
| 46 INLINE(explicit Handle(T* obj)); | 46 INLINE(explicit Handle(T* obj)); |
| 47 INLINE(Handle(T* obj, Isolate* isolate)); |
| 47 | 48 |
| 48 INLINE(Handle()) : location_(NULL) {} | 49 INLINE(Handle()) : location_(NULL) {} |
| 49 | 50 |
| 50 // Constructor for handling automatic up casting. | 51 // Constructor for handling automatic up casting. |
| 51 // Ex. Handle<JSFunction> can be passed when Handle<Object> is expected. | 52 // Ex. Handle<JSFunction> can be passed when Handle<Object> is expected. |
| 52 template <class S> Handle(Handle<S> handle) { | 53 template <class S> Handle(Handle<S> handle) { |
| 53 #ifdef DEBUG | 54 #ifdef DEBUG |
| 54 T* a = NULL; | 55 T* a = NULL; |
| 55 S* b = NULL; | 56 S* b = NULL; |
| 56 a = b; // Fake assignment to enforce type checks. | 57 a = b; // Fake assignment to enforce type checks. |
| (...skipping 54 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 111 | 112 |
| 112 ~HandleScope() { | 113 ~HandleScope() { |
| 113 Leave(&previous_); | 114 Leave(&previous_); |
| 114 } | 115 } |
| 115 | 116 |
| 116 // Counts the number of allocated handles. | 117 // Counts the number of allocated handles. |
| 117 static int NumberOfHandles(); | 118 static int NumberOfHandles(); |
| 118 | 119 |
| 119 // Creates a new handle with the given value. | 120 // Creates a new handle with the given value. |
| 120 template <typename T> | 121 template <typename T> |
| 121 static inline T** CreateHandle(T* value); | 122 static inline T** CreateHandle(T* value, Isolate* isolate); |
| 122 | 123 |
| 123 // Deallocates any extensions used by the current scope. | 124 // Deallocates any extensions used by the current scope. |
| 124 static void DeleteExtensions(Isolate* isolate); | 125 static void DeleteExtensions(Isolate* isolate); |
| 125 | 126 |
| 126 static Address current_extensions_address(); | 127 static Address current_extensions_address(); |
| 127 static Address current_next_address(); | 128 static Address current_next_address(); |
| 128 static Address current_limit_address(); | 129 static Address current_limit_address(); |
| 129 | 130 |
| 130 private: | 131 private: |
| 131 // Prevent heap allocation or illegal handle scopes. | 132 // Prevent heap allocation or illegal handle scopes. |
| (...skipping 224 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 356 private: | 357 private: |
| 357 bool has_been_transformed_; // Tells whether the object has been transformed. | 358 bool has_been_transformed_; // Tells whether the object has been transformed. |
| 358 int unused_property_fields_; // Captures the unused number of field. | 359 int unused_property_fields_; // Captures the unused number of field. |
| 359 Handle<JSObject> object_; // The object being optimized. | 360 Handle<JSObject> object_; // The object being optimized. |
| 360 }; | 361 }; |
| 361 | 362 |
| 362 | 363 |
| 363 } } // namespace v8::internal | 364 } } // namespace v8::internal |
| 364 | 365 |
| 365 #endif // V8_HANDLES_H_ | 366 #endif // V8_HANDLES_H_ |
| OLD | NEW |