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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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| 110 | 110 |
| 111 | 111 |
| 112 // ZoneObject is an abstraction that helps define classes of objects | 112 // ZoneObject is an abstraction that helps define classes of objects |
| 113 // allocated in the Zone. Use it as a base class; see ast.h. | 113 // allocated in the Zone. Use it as a base class; see ast.h. |
| 114 class ZoneObject { | 114 class ZoneObject { |
| 115 public: | 115 public: |
| 116 // Allocate a new ZoneObject of 'size' bytes in the Zone. | 116 // Allocate a new ZoneObject of 'size' bytes in the Zone. |
| 117 void* operator new(size_t size) { return Zone::New(size); } | 117 void* operator new(size_t size) { return Zone::New(size); } |
| 118 | 118 |
| 119 // Ideally, the delete operator should be private instead of | 119 // Ideally, the delete operator should be private instead of |
| 120 // public, but unfortuately the compiler sometimes synthesizes | 120 // public, but unfortunately the compiler sometimes synthesizes |
| 121 // (unused) destructors for classes derived from ZoneObject, which | 121 // (unused) destructors for classes derived from ZoneObject, which |
| 122 // require the operator to be visible. MSVC requires the delete | 122 // require the operator to be visible. MSVC requires the delete |
| 123 // operator to be public. | 123 // operator to be public. |
| 124 | 124 |
| 125 // ZoneObjects should never be deleted individually; use | 125 // ZoneObjects should never be deleted individually; use |
| 126 // Zone::DeleteAll() to delete all zone objects in one go. | 126 // Zone::DeleteAll() to delete all zone objects in one go. |
| 127 void operator delete(void*, size_t) { UNREACHABLE(); } | 127 void operator delete(void*, size_t) { UNREACHABLE(); } |
| 128 }; | 128 }; |
| 129 | 129 |
| 130 | 130 |
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| 191 | 191 |
| 192 private: | 192 private: |
| 193 ZoneScopeMode mode_; | 193 ZoneScopeMode mode_; |
| 194 static int nesting_; | 194 static int nesting_; |
| 195 }; | 195 }; |
| 196 | 196 |
| 197 | 197 |
| 198 } } // namespace v8::internal | 198 } } // namespace v8::internal |
| 199 | 199 |
| 200 #endif // V8_ZONE_H_ | 200 #endif // V8_ZONE_H_ |
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