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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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627 static void GarbageCollectionEpilogue(); | 627 static void GarbageCollectionEpilogue(); |
628 | 628 |
629 // Performs garbage collection operation. | 629 // Performs garbage collection operation. |
630 // Returns whether required_space bytes are available after the collection. | 630 // Returns whether required_space bytes are available after the collection. |
631 static bool CollectGarbage(int required_space, AllocationSpace space); | 631 static bool CollectGarbage(int required_space, AllocationSpace space); |
632 | 632 |
633 // Performs a full garbage collection. Force compaction if the | 633 // Performs a full garbage collection. Force compaction if the |
634 // parameter is true. | 634 // parameter is true. |
635 static void CollectAllGarbage(bool force_compaction); | 635 static void CollectAllGarbage(bool force_compaction); |
636 | 636 |
637 // Performs a full garbage collection if a context has been disposed | |
638 // since the last time the check was performed. | |
639 static void CollectAllGarbageIfContextDisposedDeprecated(); | |
640 | |
641 // Notify the heap that a context has been disposed. | 637 // Notify the heap that a context has been disposed. |
642 static void NotifyContextDisposed(); | 638 static void NotifyContextDisposed(); |
643 static void NotifyContextDisposedDeprecated(); | |
644 | 639 |
645 // Utility to invoke the scavenger. This is needed in test code to | 640 // Utility to invoke the scavenger. This is needed in test code to |
646 // ensure correct callback for weak global handles. | 641 // ensure correct callback for weak global handles. |
647 static void PerformScavenge(); | 642 static void PerformScavenge(); |
648 | 643 |
649 #ifdef DEBUG | 644 #ifdef DEBUG |
650 // Utility used with flag gc-greedy. | 645 // Utility used with flag gc-greedy. |
651 static bool GarbageCollectionGreedyCheck(); | 646 static bool GarbageCollectionGreedyCheck(); |
652 #endif | 647 #endif |
653 | 648 |
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910 | 905 |
911 // For keeping track of how much data has survived | 906 // For keeping track of how much data has survived |
912 // scavenge since last new space expansion. | 907 // scavenge since last new space expansion. |
913 static int survived_since_last_expansion_; | 908 static int survived_since_last_expansion_; |
914 | 909 |
915 static int always_allocate_scope_depth_; | 910 static int always_allocate_scope_depth_; |
916 static int linear_allocation_scope_depth_; | 911 static int linear_allocation_scope_depth_; |
917 | 912 |
918 // For keeping track of context disposals. | 913 // For keeping track of context disposals. |
919 static int contexts_disposed_; | 914 static int contexts_disposed_; |
920 static bool context_disposed_use_deprecated_heuristic_; | |
921 static bool context_disposed_deprecated_pending_; | |
922 | 915 |
923 #if defined(V8_TARGET_ARCH_X64) | 916 #if defined(V8_TARGET_ARCH_X64) |
924 static const int kMaxObjectSizeInNewSpace = 512*KB; | 917 static const int kMaxObjectSizeInNewSpace = 512*KB; |
925 #else | 918 #else |
926 static const int kMaxObjectSizeInNewSpace = 256*KB; | 919 static const int kMaxObjectSizeInNewSpace = 256*KB; |
927 #endif | 920 #endif |
928 | 921 |
929 static NewSpace new_space_; | 922 static NewSpace new_space_; |
930 static OldSpace* old_pointer_space_; | 923 static OldSpace* old_pointer_space_; |
931 static OldSpace* old_data_space_; | 924 static OldSpace* old_data_space_; |
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1735 | 1728 |
1736 // To speed up scavenge collections new space string are kept | 1729 // To speed up scavenge collections new space string are kept |
1737 // separate from old space strings. | 1730 // separate from old space strings. |
1738 static List<Object*> new_space_strings_; | 1731 static List<Object*> new_space_strings_; |
1739 static List<Object*> old_space_strings_; | 1732 static List<Object*> old_space_strings_; |
1740 }; | 1733 }; |
1741 | 1734 |
1742 } } // namespace v8::internal | 1735 } } // namespace v8::internal |
1743 | 1736 |
1744 #endif // V8_HEAP_H_ | 1737 #endif // V8_HEAP_H_ |
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