75 void initialize_statistics();
76
77 void set_start(HeapWord* start) { _start = start; }
78 void set_end(HeapWord* end) { _end = end; }
79 void set_allocation_end(HeapWord* ptr) { _allocation_end = ptr; }
80 void set_top(HeapWord* top) { _top = top; }
81 void set_pf_top(HeapWord* pf_top) { _pf_top = pf_top; }
82 void set_desired_size(size_t desired_size) { _desired_size = desired_size; }
83 void set_refill_waste_limit(size_t waste) { _refill_waste_limit = waste; }
84
85 size_t initial_refill_waste_limit() { return desired_size() / TLABRefillWasteFraction; }
86
87 static int target_refills() { return _target_refills; }
88 size_t initial_desired_size();
89
90 size_t remaining();
91
92 // Make parsable and release it.
93 void reset();
94
95 // Resize based on amount of allocation, etc.
96 void resize();
97
98 void invariants() const { assert(top() >= start() && top() <= end(), "invalid tlab"); }
99
100 void initialize(HeapWord* start, HeapWord* top, HeapWord* end);
101
102 void print_stats(const char* tag);
103
104 Thread* thread();
105
106 // statistics
107
108 int number_of_refills() const { return _number_of_refills; }
109 int fast_refill_waste() const { return _fast_refill_waste; }
110 int slow_refill_waste() const { return _slow_refill_waste; }
111 int gc_waste() const { return _gc_waste; }
112 int slow_allocations() const { return _slow_allocations; }
113
114 static GlobalTLABStats* _global_stats;
115 static GlobalTLABStats* global_stats() { return _global_stats; }
116
117 public:
151 // Return tlab size or remaining space in eden such that the
152 // space is large enough to hold obj_size and necessary fill space.
153 // Otherwise return 0;
154 inline size_t compute_size(size_t obj_size);
155
156 // Compute the minimal needed tlab size for the given object size.
157 static inline size_t compute_min_size(size_t obj_size);
158
159 // Record slow allocation
160 inline void record_slow_allocation(size_t obj_size);
161
162 // Initialization at startup
163 static void startup_initialization();
164
165 // Make an in-use tlab parsable, optionally retiring and/or zapping it.
166 void make_parsable(bool retire, bool zap = true);
167
168 // Retire in-use tlab before allocation of a new tlab
169 void clear_before_allocation();
170
171 // Accumulate statistics across all tlabs before gc
172 static void accumulate_statistics_before_gc();
173
174 // Resize tlabs for all threads
175 static void resize_all_tlabs();
176
177 void fill(HeapWord* start, HeapWord* top, size_t new_size);
178 void initialize();
179
180 void set_back_allocation_end();
181 void set_sample_end();
182
183 static size_t refill_waste_limit_increment() { return TLABWasteIncrement; }
184
185 template <typename T> void addresses_do(T f) {
186 f(&_start);
187 f(&_top);
188 f(&_pf_top);
189 f(&_end);
190 f(&_allocation_end);
191 }
192
193 // Code generation support
194 static ByteSize start_offset() { return byte_offset_of(ThreadLocalAllocBuffer, _start); }
195 static ByteSize end_offset() { return byte_offset_of(ThreadLocalAllocBuffer, _end); }
|
75 void initialize_statistics();
76
77 void set_start(HeapWord* start) { _start = start; }
78 void set_end(HeapWord* end) { _end = end; }
79 void set_allocation_end(HeapWord* ptr) { _allocation_end = ptr; }
80 void set_top(HeapWord* top) { _top = top; }
81 void set_pf_top(HeapWord* pf_top) { _pf_top = pf_top; }
82 void set_desired_size(size_t desired_size) { _desired_size = desired_size; }
83 void set_refill_waste_limit(size_t waste) { _refill_waste_limit = waste; }
84
85 size_t initial_refill_waste_limit() { return desired_size() / TLABRefillWasteFraction; }
86
87 static int target_refills() { return _target_refills; }
88 size_t initial_desired_size();
89
90 size_t remaining();
91
92 // Make parsable and release it.
93 void reset();
94
95 void invariants() const { assert(top() >= start() && top() <= end(), "invalid tlab"); }
96
97 void initialize(HeapWord* start, HeapWord* top, HeapWord* end);
98
99 void print_stats(const char* tag);
100
101 Thread* thread();
102
103 // statistics
104
105 int number_of_refills() const { return _number_of_refills; }
106 int fast_refill_waste() const { return _fast_refill_waste; }
107 int slow_refill_waste() const { return _slow_refill_waste; }
108 int gc_waste() const { return _gc_waste; }
109 int slow_allocations() const { return _slow_allocations; }
110
111 static GlobalTLABStats* _global_stats;
112 static GlobalTLABStats* global_stats() { return _global_stats; }
113
114 public:
148 // Return tlab size or remaining space in eden such that the
149 // space is large enough to hold obj_size and necessary fill space.
150 // Otherwise return 0;
151 inline size_t compute_size(size_t obj_size);
152
153 // Compute the minimal needed tlab size for the given object size.
154 static inline size_t compute_min_size(size_t obj_size);
155
156 // Record slow allocation
157 inline void record_slow_allocation(size_t obj_size);
158
159 // Initialization at startup
160 static void startup_initialization();
161
162 // Make an in-use tlab parsable, optionally retiring and/or zapping it.
163 void make_parsable(bool retire, bool zap = true);
164
165 // Retire in-use tlab before allocation of a new tlab
166 void clear_before_allocation();
167
168 // Resize based on amount of allocation, etc.
169 void resize();
170
171 // Accumulate statistics across all tlabs before gc
172 static void accumulate_statistics_before_gc();
173
174 void fill(HeapWord* start, HeapWord* top, size_t new_size);
175 void initialize();
176
177 void set_back_allocation_end();
178 void set_sample_end();
179
180 static size_t refill_waste_limit_increment() { return TLABWasteIncrement; }
181
182 template <typename T> void addresses_do(T f) {
183 f(&_start);
184 f(&_top);
185 f(&_pf_top);
186 f(&_end);
187 f(&_allocation_end);
188 }
189
190 // Code generation support
191 static ByteSize start_offset() { return byte_offset_of(ThreadLocalAllocBuffer, _start); }
192 static ByteSize end_offset() { return byte_offset_of(ThreadLocalAllocBuffer, _end); }
|