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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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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| 134 // For visitors that allow specialization by size calculate VisitorId based | 134 // For visitors that allow specialization by size calculate VisitorId based |
| 135 // on size, base visitor id and generic visitor id. | 135 // on size, base visitor id and generic visitor id. |
| 136 static VisitorId GetVisitorIdForSize(VisitorId base, | 136 static VisitorId GetVisitorIdForSize(VisitorId base, |
| 137 VisitorId generic, | 137 VisitorId generic, |
| 138 int object_size) { | 138 int object_size) { |
| 139 ASSERT((base == kVisitDataObject) || | 139 ASSERT((base == kVisitDataObject) || |
| 140 (base == kVisitStruct) || | 140 (base == kVisitStruct) || |
| 141 (base == kVisitJSObject)); | 141 (base == kVisitJSObject)); |
| 142 ASSERT(IsAligned(object_size, kPointerSize)); | 142 ASSERT(IsAligned(object_size, kPointerSize)); |
| 143 ASSERT(kMinObjectSizeInWords * kPointerSize <= object_size); | 143 ASSERT(kMinObjectSizeInWords * kPointerSize <= object_size); |
| 144 ASSERT(object_size < Page::kMaxNonCodeHeapObjectSize); | 144 ASSERT(object_size <= Page::kMaxNonCodeHeapObjectSize); |
| 145 | 145 |
| 146 const VisitorId specialization = static_cast<VisitorId>( | 146 const VisitorId specialization = static_cast<VisitorId>( |
| 147 base + (object_size >> kPointerSizeLog2) - kMinObjectSizeInWords); | 147 base + (object_size >> kPointerSizeLog2) - kMinObjectSizeInWords); |
| 148 | 148 |
| 149 return Min(specialization, generic); | 149 return Min(specialization, generic); |
| 150 } | 150 } |
| 151 }; | 151 }; |
| 152 | 152 |
| 153 | 153 |
| 154 template<typename Callback> | 154 template<typename Callback> |
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| 468 | 468 |
| 469 | 469 |
| 470 template<typename StaticVisitor> | 470 template<typename StaticVisitor> |
| 471 VisitorDispatchTable<typename StaticMarkingVisitor<StaticVisitor>::Callback> | 471 VisitorDispatchTable<typename StaticMarkingVisitor<StaticVisitor>::Callback> |
| 472 StaticMarkingVisitor<StaticVisitor>::table_; | 472 StaticMarkingVisitor<StaticVisitor>::table_; |
| 473 | 473 |
| 474 | 474 |
| 475 } } // namespace v8::internal | 475 } } // namespace v8::internal |
| 476 | 476 |
| 477 #endif // V8_OBJECTS_VISITING_H_ | 477 #endif // V8_OBJECTS_VISITING_H_ |
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