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comparison src/share/vm/memory/threadLocalAllocBuffer.hpp @ 17727:cfd4aac53239

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8030177: G1: Enable TLAB resizing Reviewed-by: tschatzl, stefank, jmasa
author brutisso
date Mon, 27 Jan 2014 13:14:53 +0100
parents b9a9ed0f8eeb
children 4ca6dc0799b6 060cdf93040c
comparison
equal deleted inserted replaced
17726:085b304a1cc5 17727:cfd4aac53239
43 HeapWord* _top; // address after last allocation 43 HeapWord* _top; // address after last allocation
44 HeapWord* _pf_top; // allocation prefetch watermark 44 HeapWord* _pf_top; // allocation prefetch watermark
45 HeapWord* _end; // allocation end (excluding alignment_reserve) 45 HeapWord* _end; // allocation end (excluding alignment_reserve)
46 size_t _desired_size; // desired size (including alignment_reserve) 46 size_t _desired_size; // desired size (including alignment_reserve)
47 size_t _refill_waste_limit; // hold onto tlab if free() is larger than this 47 size_t _refill_waste_limit; // hold onto tlab if free() is larger than this
48 48 size_t _allocated_before_last_gc; // total bytes allocated up until the last gc
49
50 static size_t _max_size; // maximum size of any TLAB
49 static unsigned _target_refills; // expected number of refills between GCs 51 static unsigned _target_refills; // expected number of refills between GCs
50 52
51 unsigned _number_of_refills; 53 unsigned _number_of_refills;
52 unsigned _fast_refill_waste; 54 unsigned _fast_refill_waste;
53 unsigned _slow_refill_waste; 55 unsigned _slow_refill_waste;
97 99
98 static GlobalTLABStats* _global_stats; 100 static GlobalTLABStats* _global_stats;
99 static GlobalTLABStats* global_stats() { return _global_stats; } 101 static GlobalTLABStats* global_stats() { return _global_stats; }
100 102
101 public: 103 public:
102 ThreadLocalAllocBuffer() : _allocation_fraction(TLABAllocationWeight) { 104 ThreadLocalAllocBuffer() : _allocation_fraction(TLABAllocationWeight), _allocated_before_last_gc(0) {
103 // do nothing. tlabs must be inited by initialize() calls 105 // do nothing. tlabs must be inited by initialize() calls
104 } 106 }
105 107
106 static const size_t min_size() { return align_object_size(MinTLABSize / HeapWordSize); } 108 static const size_t min_size() { return align_object_size(MinTLABSize / HeapWordSize); }
107 static const size_t max_size(); 109 static const size_t max_size() { assert(_max_size != 0, "max_size not set up"); return _max_size; }
110 static void set_max_size(size_t max_size) { _max_size = max_size; }
108 111
109 HeapWord* start() const { return _start; } 112 HeapWord* start() const { return _start; }
110 HeapWord* end() const { return _end; } 113 HeapWord* end() const { return _end; }
111 HeapWord* hard_end() const { return _end + alignment_reserve(); } 114 HeapWord* hard_end() const { return _end + alignment_reserve(); }
112 HeapWord* top() const { return _top; } 115 HeapWord* top() const { return _top; }