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src/share/vm/gc/shared/plab.hpp

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rev 8852 : [mq]: 8133470-fix-plab-inline
rev 8853 : imported patch mikael-erik-suggestions
rev 8854 : imported patch 8073013-add-detailed-information-about-plab-memory-usage
rev 8857 : imported patch mikael-comments
rev 8866 : imported patch 8067339-PLAB-reallocation-might-result-in-failure-to-allocate
rev 8867 : [mq]: bengt-refactoring

*** 72,82 **** // Initializes the buffer to be empty, but with the given "word_sz". // Must get initialized with "set_buf" for an allocation to succeed. PLAB(size_t word_sz); virtual ~PLAB() {} ! static size_t alignment_reserve() { return AlignmentReserve; } // Minimum PLAB size. static size_t min_size(); // Maximum PLAB size. static size_t max_size(); --- 72,82 ---- // Initializes the buffer to be empty, but with the given "word_sz". // Must get initialized with "set_buf" for an allocation to succeed. PLAB(size_t word_sz); virtual ~PLAB() {} ! static size_t size_required_for_allocation(size_t word_size) { return word_size + AlignmentReserve; } // Minimum PLAB size. static size_t min_size(); // Maximum PLAB size. static size_t max_size();
*** 107,123 **** size_t word_sz() { return _word_sz; } size_t waste() { return _wasted; } size_t undo_waste() { return _undo_wasted; } - // Should only be done if we are about to reset with a new buffer of the - // given size. - void set_word_size(size_t new_word_sz) { - assert(new_word_sz > AlignmentReserve, "Too small"); - _word_sz = new_word_sz; - } - // The number of words of unallocated space remaining in the buffer. size_t words_remaining() { assert(_end >= _top, "Negative buffer"); return pointer_delta(_end, _top, HeapWordSize); } --- 107,116 ----
*** 125,135 **** bool contains(void* addr) { return (void*)_bottom <= addr && addr < (void*)_hard_end; } // Sets the space of the buffer to be [buf, space+word_sz()). ! virtual void set_buf(HeapWord* buf) { _bottom = buf; _top = _bottom; _hard_end = _bottom + word_sz(); _end = _hard_end - AlignmentReserve; assert(_end >= _top, "Negative buffer"); --- 118,131 ---- bool contains(void* addr) { return (void*)_bottom <= addr && addr < (void*)_hard_end; } // Sets the space of the buffer to be [buf, space+word_sz()). ! virtual void set_buf(HeapWord* buf, size_t new_word_sz) { ! assert(new_word_sz > AlignmentReserve, "Too small"); ! _word_sz = new_word_sz; ! _bottom = buf; _top = _bottom; _hard_end = _bottom + word_sz(); _end = _hard_end - AlignmentReserve; assert(_end >= _top, "Negative buffer");
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