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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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774 } | 774 } |
775 | 775 |
776 // --------------------------------------------------------------------- | 776 // --------------------------------------------------------------------- |
777 | 777 |
778 // Page size in bytes. This must be a multiple of the OS page size. | 778 // Page size in bytes. This must be a multiple of the OS page size. |
779 static const int kPageSize = 1 << kPageSizeBits; | 779 static const int kPageSize = 1 << kPageSizeBits; |
780 | 780 |
781 // Object area size in bytes. | 781 // Object area size in bytes. |
782 static const int kNonCodeObjectAreaSize = kPageSize - kObjectStartOffset; | 782 static const int kNonCodeObjectAreaSize = kPageSize - kObjectStartOffset; |
783 | 783 |
784 // Maximum object size that fits in a page. | 784 // Maximum object size that fits in a page. Objects larger than that size |
| 785 // are allocated in large object space and are never moved in memory. This |
| 786 // also applies to new space allocation, since objects are never migrated |
| 787 // from new space to large object space. |
785 static const int kMaxNonCodeHeapObjectSize = kNonCodeObjectAreaSize; | 788 static const int kMaxNonCodeHeapObjectSize = kNonCodeObjectAreaSize; |
786 | 789 |
787 // Page size mask. | 790 // Page size mask. |
788 static const intptr_t kPageAlignmentMask = (1 << kPageSizeBits) - 1; | 791 static const intptr_t kPageAlignmentMask = (1 << kPageSizeBits) - 1; |
789 | 792 |
790 inline void ClearGCFields(); | 793 inline void ClearGCFields(); |
791 | 794 |
792 static inline Page* Initialize(Heap* heap, | 795 static inline Page* Initialize(Heap* heap, |
793 MemoryChunk* chunk, | 796 MemoryChunk* chunk, |
794 Executability executable, | 797 Executability executable, |
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2874 } | 2877 } |
2875 // Must be small, since an iteration is used for lookup. | 2878 // Must be small, since an iteration is used for lookup. |
2876 static const int kMaxComments = 64; | 2879 static const int kMaxComments = 64; |
2877 }; | 2880 }; |
2878 #endif | 2881 #endif |
2879 | 2882 |
2880 | 2883 |
2881 } } // namespace v8::internal | 2884 } } // namespace v8::internal |
2882 | 2885 |
2883 #endif // V8_SPACES_H_ | 2886 #endif // V8_SPACES_H_ |
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