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1 /* | 1 /* |
2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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774 Address allocateObject(size_t allocationSize, size_t gcInfoIndex); | 774 Address allocateObject(size_t allocationSize, size_t gcInfoIndex); |
775 | 775 |
776 void freePage(NormalPage*); | 776 void freePage(NormalPage*); |
777 | 777 |
778 bool coalesce(); | 778 bool coalesce(); |
779 void promptlyFreeObject(HeapObjectHeader*); | 779 void promptlyFreeObject(HeapObjectHeader*); |
780 bool expandObject(HeapObjectHeader*, size_t); | 780 bool expandObject(HeapObjectHeader*, size_t); |
781 bool shrinkObject(HeapObjectHeader*, size_t); | 781 bool shrinkObject(HeapObjectHeader*, size_t); |
782 void decreasePromptlyFreedSize(size_t size) { m_promptlyFreedSize -= size; } | 782 void decreasePromptlyFreedSize(size_t size) { m_promptlyFreedSize -= size; } |
783 | 783 |
784 bool isObjectAllocatedAtAllocationPoint(HeapObjectHeader* header) | |
785 { | |
786 return header->payloadEnd() == m_currentAllocationPoint; | |
787 } | |
788 | |
789 private: | 784 private: |
790 void allocatePage(); | 785 void allocatePage(); |
791 Address lazySweepPages(size_t, size_t gcInfoIndex) override; | 786 Address lazySweepPages(size_t, size_t gcInfoIndex) override; |
792 Address outOfLineAllocate(size_t allocationSize, size_t gcInfoIndex); | 787 Address outOfLineAllocate(size_t allocationSize, size_t gcInfoIndex); |
793 Address currentAllocationPoint() const { return m_currentAllocationPoint; } | 788 Address currentAllocationPoint() const { return m_currentAllocationPoint; } |
794 size_t remainingAllocationSize() const { return m_remainingAllocationSize; } | 789 size_t remainingAllocationSize() const { return m_remainingAllocationSize; } |
795 bool hasCurrentAllocationArea() const { return currentAllocationPoint() && r
emainingAllocationSize(); } | 790 bool hasCurrentAllocationArea() const { return currentAllocationPoint() && r
emainingAllocationSize(); } |
796 void setAllocationPoint(Address, size_t); | 791 void setAllocationPoint(Address, size_t); |
797 void updateRemainingAllocationSize(); | 792 void updateRemainingAllocationSize(); |
798 Address allocateFromFreeList(size_t, size_t gcInfoIndex); | 793 Address allocateFromFreeList(size_t, size_t gcInfoIndex); |
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947 SET_MEMORY_ACCESSIBLE(result, allocationSize - sizeof(HeapObjectHeader))
; | 942 SET_MEMORY_ACCESSIBLE(result, allocationSize - sizeof(HeapObjectHeader))
; |
948 ASSERT(findPageFromAddress(headerAddress + allocationSize - 1)); | 943 ASSERT(findPageFromAddress(headerAddress + allocationSize - 1)); |
949 return result; | 944 return result; |
950 } | 945 } |
951 return outOfLineAllocate(allocationSize, gcInfoIndex); | 946 return outOfLineAllocate(allocationSize, gcInfoIndex); |
952 } | 947 } |
953 | 948 |
954 } // namespace blink | 949 } // namespace blink |
955 | 950 |
956 #endif // HeapPage_h | 951 #endif // HeapPage_h |
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