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Issue 18094: Fix a bunch of spelling mistakes :\ (Closed)
Patch Set: More fixes. Created 11 years, 11 months ago
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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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793 // Sets allocation pointer to a page bottom. 793 // Sets allocation pointer to a page bottom.
794 static void SetAllocationInfo(AllocationInfo* alloc_info, Page* p); 794 static void SetAllocationInfo(AllocationInfo* alloc_info, Page* p);
795 795
796 // Returns the top page specified by an allocation info structure. 796 // Returns the top page specified by an allocation info structure.
797 static Page* TopPageOf(AllocationInfo alloc_info) { 797 static Page* TopPageOf(AllocationInfo alloc_info) {
798 return Page::FromAllocationTop(alloc_info.limit); 798 return Page::FromAllocationTop(alloc_info.limit);
799 } 799 }
800 800
801 // Expands the space by allocating a fixed number of pages. Returns false if 801 // Expands the space by allocating a fixed number of pages. Returns false if
802 // it cannot allocate requested number of pages from OS. Newly allocated 802 // it cannot allocate requested number of pages from OS. Newly allocated
803 // pages are appened to the last_page; 803 // pages are append to the last_page;
804 bool Expand(Page* last_page); 804 bool Expand(Page* last_page);
805 805
806 // Generic fast case allocation function that tries linear allocation in 806 // Generic fast case allocation function that tries linear allocation in
807 // the top page of 'alloc_info'. Returns NULL on failure. 807 // the top page of 'alloc_info'. Returns NULL on failure.
808 inline HeapObject* AllocateLinearly(AllocationInfo* alloc_info, 808 inline HeapObject* AllocateLinearly(AllocationInfo* alloc_info,
809 int size_in_bytes); 809 int size_in_bytes);
810 810
811 // During normal allocation or deserialization, roll to the next page in 811 // During normal allocation or deserialization, roll to the next page in
812 // the space (there is assumed to be one) and allocate there. This 812 // the space (there is assumed to be one) and allocate there. This
813 // function is space-dependent. 813 // function is space-dependent.
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889 889
890 // Tear down the space. Heap memory was not allocated by the space, so it 890 // Tear down the space. Heap memory was not allocated by the space, so it
891 // is not deallocated here. 891 // is not deallocated here.
892 void TearDown(); 892 void TearDown();
893 893
894 // True if the space has been set up but not torn down. 894 // True if the space has been set up but not torn down.
895 bool HasBeenSetup() { return start_ != NULL; } 895 bool HasBeenSetup() { return start_ != NULL; }
896 896
897 // Double the size of the semispace by committing extra virtual memory. 897 // Double the size of the semispace by committing extra virtual memory.
898 // Assumes that the caller has checked that the semispace has not reached 898 // Assumes that the caller has checked that the semispace has not reached
899 // its maxmimum capacity (and thus there is space available in the reserved 899 // its maximum capacity (and thus there is space available in the reserved
900 // address range to grow). 900 // address range to grow).
901 bool Double(); 901 bool Double();
902 902
903 // Returns the start address of the space. 903 // Returns the start address of the space.
904 Address low() { return start_; } 904 Address low() { return start_; }
905 // Returns one past the end address of the space. 905 // Returns one past the end address of the space.
906 Address high() { return low() + capacity_; } 906 Address high() { return low() + capacity_; }
907 907
908 // Age mark accessors. 908 // Age mark accessors.
909 Address age_mark() { return age_mark_; } 909 Address age_mark() { return age_mark_; }
910 void set_age_mark(Address mark) { age_mark_ = mark; } 910 void set_age_mark(Address mark) { age_mark_ = mark; }
911 911
912 // True if the address is in the address range of this semispace (not 912 // True if the address is in the address range of this semispace (not
913 // necessarily below the allocation pointer). 913 // necessarily below the allocation pointer).
914 bool Contains(Address a) { 914 bool Contains(Address a) {
915 return (reinterpret_cast<uint32_t>(a) & address_mask_) 915 return (reinterpret_cast<uint32_t>(a) & address_mask_)
916 == reinterpret_cast<uint32_t>(start_); 916 == reinterpret_cast<uint32_t>(start_);
917 } 917 }
918 918
919 // True if the object is a heap object in the address range of this 919 // True if the object is a heap object in the address range of this
920 // semispace (not necessarily below the allocation pointer). 920 // semispace (not necessarily below the allocation pointer).
921 bool Contains(Object* o) { 921 bool Contains(Object* o) {
922 return (reinterpret_cast<uint32_t>(o) & object_mask_) == object_expected_; 922 return (reinterpret_cast<uint32_t>(o) & object_mask_) == object_expected_;
923 } 923 }
924 924
925 // The offset of an address from the begining of the space. 925 // The offset of an address from the beginning of the space.
926 int SpaceOffsetForAddress(Address addr) { return addr - low(); } 926 int SpaceOffsetForAddress(Address addr) { return addr - low(); }
927 927
928 // If we don't have this here then SemiSpace will be abstract. However 928 // If we don't have this here then SemiSpace will be abstract. However
929 // it should never be called. 929 // it should never be called.
930 virtual int Size() { 930 virtual int Size() {
931 UNREACHABLE(); 931 UNREACHABLE();
932 return 0; 932 return 0;
933 } 933 }
934 934
935 #ifdef DEBUG 935 #ifdef DEBUG
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1519 // Accessors for the fields of the chunk. 1519 // Accessors for the fields of the chunk.
1520 LargeObjectChunk* next() { return next_; } 1520 LargeObjectChunk* next() { return next_; }
1521 void set_next(LargeObjectChunk* chunk) { next_ = chunk; } 1521 void set_next(LargeObjectChunk* chunk) { next_ = chunk; }
1522 1522
1523 size_t size() { return size_; } 1523 size_t size() { return size_; }
1524 void set_size(size_t size_in_bytes) { size_ = size_in_bytes; } 1524 void set_size(size_t size_in_bytes) { size_ = size_in_bytes; }
1525 1525
1526 // Returns the object in this chunk. 1526 // Returns the object in this chunk.
1527 inline HeapObject* GetObject(); 1527 inline HeapObject* GetObject();
1528 1528
1529 // Given a requested size (including any extra remembereed set words), 1529 // Given a requested size (including any extra remembered set words),
1530 // returns the physical size of a chunk to be allocated. 1530 // returns the physical size of a chunk to be allocated.
1531 static int ChunkSizeFor(int size_in_bytes); 1531 static int ChunkSizeFor(int size_in_bytes);
1532 1532
1533 // Given a chunk size, returns the object size it can accomodate (not 1533 // Given a chunk size, returns the object size it can accommodate (not
1534 // including any extra remembered set words). Used by 1534 // including any extra remembered set words). Used by
1535 // LargeObjectSpace::Available. Note that this can overestimate the size 1535 // LargeObjectSpace::Available. Note that this can overestimate the size
1536 // of object that will fit in a chunk---if the object requires extra 1536 // of object that will fit in a chunk---if the object requires extra
1537 // remembered set words (eg, for large fixed arrays), the actual object 1537 // remembered set words (eg, for large fixed arrays), the actual object
1538 // size for the chunk will be smaller than reported by this function. 1538 // size for the chunk will be smaller than reported by this function.
1539 static int ObjectSizeFor(int chunk_size) { 1539 static int ObjectSizeFor(int chunk_size) {
1540 if (chunk_size <= (Page::kPageSize + Page::kObjectStartOffset)) return 0; 1540 if (chunk_size <= (Page::kPageSize + Page::kObjectStartOffset)) return 0;
1541 return chunk_size - Page::kPageSize - Page::kObjectStartOffset; 1541 return chunk_size - Page::kPageSize - Page::kObjectStartOffset;
1542 } 1542 }
1543 1543
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1654 1654
1655 private: 1655 private:
1656 LargeObjectChunk* current_; 1656 LargeObjectChunk* current_;
1657 HeapObjectCallback size_func_; 1657 HeapObjectCallback size_func_;
1658 }; 1658 };
1659 1659
1660 1660
1661 } } // namespace v8::internal 1661 } } // namespace v8::internal
1662 1662
1663 #endif // V8_SPACES_H_ 1663 #endif // V8_SPACES_H_
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