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1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 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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689 | 689 |
690 // Code that should be run before and after each GC. Includes some | 690 // Code that should be run before and after each GC. Includes some |
691 // reporting/verification activities when compiled with DEBUG set. | 691 // reporting/verification activities when compiled with DEBUG set. |
692 static void GarbageCollectionPrologue(); | 692 static void GarbageCollectionPrologue(); |
693 static void GarbageCollectionEpilogue(); | 693 static void GarbageCollectionEpilogue(); |
694 | 694 |
695 enum CollectionPolicy { NORMAL, AGGRESSIVE }; | 695 enum CollectionPolicy { NORMAL, AGGRESSIVE }; |
696 | 696 |
697 // Performs garbage collection operation. | 697 // Performs garbage collection operation. |
698 // Returns whether required_space bytes are available after the collection. | 698 // Returns whether required_space bytes are available after the collection. |
699 static bool CollectGarbage(int required_space, | 699 static void CollectGarbage(AllocationSpace space, |
700 AllocationSpace space, | |
701 CollectionPolicy collectionPolicy = NORMAL); | 700 CollectionPolicy collectionPolicy = NORMAL); |
702 | 701 |
703 // Performs a full garbage collection. Force compaction if the | 702 // Performs a full garbage collection. Force compaction if the |
704 // parameter is true. | 703 // parameter is true. |
705 static void CollectAllGarbage(bool force_compaction, | 704 static void CollectAllGarbage(bool force_compaction, |
706 CollectionPolicy collectionPolicy = NORMAL); | 705 CollectionPolicy collectionPolicy = NORMAL); |
707 | 706 |
708 // Last hope GC, should try to squeeze as much as possible. | 707 // Last hope GC, should try to squeeze as much as possible. |
709 static void CollectAllAvailableGarbage(); | 708 static void CollectAllAvailableGarbage(); |
710 | 709 |
711 // Notify the heap that a context has been disposed. | 710 // Notify the heap that a context has been disposed. |
712 static int NotifyContextDisposed() { return ++contexts_disposed_; } | 711 static int NotifyContextDisposed() { return ++contexts_disposed_; } |
713 | 712 |
714 // Utility to invoke the scavenger. This is needed in test code to | 713 // Utility to invoke the scavenger. This is needed in test code to |
715 // ensure correct callback for weak global handles. | 714 // ensure correct callback for weak global handles. |
716 static void PerformScavenge(); | 715 static void PerformScavenge(); |
717 | 716 |
718 #ifdef DEBUG | 717 #ifdef DEBUG |
719 // Utility used with flag gc-greedy. | 718 // Utility used with flag gc-greedy. |
720 static bool GarbageCollectionGreedyCheck(); | 719 static void GarbageCollectionGreedyCheck(); |
721 #endif | 720 #endif |
722 | 721 |
723 static void AddGCPrologueCallback( | 722 static void AddGCPrologueCallback( |
724 GCEpilogueCallback callback, GCType gc_type_filter); | 723 GCEpilogueCallback callback, GCType gc_type_filter); |
725 static void RemoveGCPrologueCallback(GCEpilogueCallback callback); | 724 static void RemoveGCPrologueCallback(GCEpilogueCallback callback); |
726 | 725 |
727 static void AddGCEpilogueCallback( | 726 static void AddGCEpilogueCallback( |
728 GCEpilogueCallback callback, GCType gc_type_filter); | 727 GCEpilogueCallback callback, GCType gc_type_filter); |
729 static void RemoveGCEpilogueCallback(GCEpilogueCallback callback); | 728 static void RemoveGCEpilogueCallback(GCEpilogueCallback callback); |
730 | 729 |
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2039 | 2038 |
2040 // To speed up scavenge collections new space string are kept | 2039 // To speed up scavenge collections new space string are kept |
2041 // separate from old space strings. | 2040 // separate from old space strings. |
2042 static List<Object*> new_space_strings_; | 2041 static List<Object*> new_space_strings_; |
2043 static List<Object*> old_space_strings_; | 2042 static List<Object*> old_space_strings_; |
2044 }; | 2043 }; |
2045 | 2044 |
2046 } } // namespace v8::internal | 2045 } } // namespace v8::internal |
2047 | 2046 |
2048 #endif // V8_HEAP_H_ | 2047 #endif // V8_HEAP_H_ |
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