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1 // Copyright 2006-2009 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2009 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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4220 | 4220 |
4221 | 4221 |
4222 // Utility superclass for stack-allocated objects that must be updated | 4222 // Utility superclass for stack-allocated objects that must be updated |
4223 // on gc. It provides two ways for the gc to update instances, either | 4223 // on gc. It provides two ways for the gc to update instances, either |
4224 // iterating or updating after gc. | 4224 // iterating or updating after gc. |
4225 class Relocatable BASE_EMBEDDED { | 4225 class Relocatable BASE_EMBEDDED { |
4226 public: | 4226 public: |
4227 inline Relocatable() : prev_(top_) { top_ = this; } | 4227 inline Relocatable() : prev_(top_) { top_ = this; } |
4228 virtual ~Relocatable() { | 4228 virtual ~Relocatable() { |
4229 ASSERT_EQ(top_, this); | 4229 ASSERT_EQ(top_, this); |
4230 top_ = prev_; } | 4230 top_ = prev_; |
| 4231 } |
4231 virtual void IterateInstance(ObjectVisitor* v) { } | 4232 virtual void IterateInstance(ObjectVisitor* v) { } |
4232 virtual void PostGarbageCollection() { } | 4233 virtual void PostGarbageCollection() { } |
4233 | 4234 |
4234 static void PostGarbageCollectionProcessing(); | 4235 static void PostGarbageCollectionProcessing(); |
4235 static int ArchiveSpacePerThread(); | 4236 static int ArchiveSpacePerThread(); |
4236 static char* ArchiveState(char* to); | 4237 static char* ArchiveState(char* to); |
4237 static char* RestoreState(char* from); | 4238 static char* RestoreState(char* from); |
4238 static void Iterate(ObjectVisitor* v); | 4239 static void Iterate(ObjectVisitor* v); |
4239 static void Iterate(ObjectVisitor* v, Relocatable* top); | 4240 static void Iterate(ObjectVisitor* v, Relocatable* top); |
4240 static char* Iterate(ObjectVisitor* v, char* t); | 4241 static char* Iterate(ObjectVisitor* v, char* t); |
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4879 } else { | 4880 } else { |
4880 value &= ~(1 << bit_position); | 4881 value &= ~(1 << bit_position); |
4881 } | 4882 } |
4882 return value; | 4883 return value; |
4883 } | 4884 } |
4884 }; | 4885 }; |
4885 | 4886 |
4886 } } // namespace v8::internal | 4887 } } // namespace v8::internal |
4887 | 4888 |
4888 #endif // V8_OBJECTS_H_ | 4889 #endif // V8_OBJECTS_H_ |
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