121 if (retire) {
122 thread()->incr_allocated_bytes(used_bytes());
123 }
124
125 Universe::heap()->fill_with_dummy_object(top(), hard_end(), retire && zap);
126
127 if (retire || ZeroTLAB) { // "Reset" the TLAB
128 set_start(NULL);
129 set_top(NULL);
130 set_pf_top(NULL);
131 set_end(NULL);
132 set_allocation_end(NULL);
133 }
134 }
135 assert(!(retire || ZeroTLAB) ||
136 (start() == NULL && end() == NULL && top() == NULL &&
137 _allocation_end == NULL),
138 "TLAB must be reset");
139 }
140
141 void ThreadLocalAllocBuffer::resize_all_tlabs() {
142 if (ResizeTLAB) {
143 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *thread = jtiwh.next(); ) {
144 thread->tlab().resize();
145 }
146 }
147 }
148
149 void ThreadLocalAllocBuffer::resize() {
150 // Compute the next tlab size using expected allocation amount
151 assert(ResizeTLAB, "Should not call this otherwise");
152 size_t alloc = (size_t)(_allocation_fraction.average() *
153 (Universe::heap()->tlab_capacity(thread()) / HeapWordSize));
154 size_t new_size = alloc / _target_refills;
155
156 new_size = MIN2(MAX2(new_size, min_size()), max_size());
157
158 size_t aligned_new_size = align_object_size(new_size);
159
160 log_trace(gc, tlab)("TLAB new size: thread: " INTPTR_FORMAT " [id: %2d]"
161 " refills %d alloc: %8.6f desired_size: " SIZE_FORMAT " -> " SIZE_FORMAT,
162 p2i(thread()), thread()->osthread()->thread_id(),
163 _target_refills, _allocation_fraction.average(), desired_size(), aligned_new_size);
164
165 set_desired_size(aligned_new_size);
166 set_refill_waste_limit(initial_refill_waste_limit());
167 }
168
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121 if (retire) {
122 thread()->incr_allocated_bytes(used_bytes());
123 }
124
125 Universe::heap()->fill_with_dummy_object(top(), hard_end(), retire && zap);
126
127 if (retire || ZeroTLAB) { // "Reset" the TLAB
128 set_start(NULL);
129 set_top(NULL);
130 set_pf_top(NULL);
131 set_end(NULL);
132 set_allocation_end(NULL);
133 }
134 }
135 assert(!(retire || ZeroTLAB) ||
136 (start() == NULL && end() == NULL && top() == NULL &&
137 _allocation_end == NULL),
138 "TLAB must be reset");
139 }
140
141 void ThreadLocalAllocBuffer::resize() {
142 // Compute the next tlab size using expected allocation amount
143 assert(ResizeTLAB, "Should not call this otherwise");
144 size_t alloc = (size_t)(_allocation_fraction.average() *
145 (Universe::heap()->tlab_capacity(thread()) / HeapWordSize));
146 size_t new_size = alloc / _target_refills;
147
148 new_size = MIN2(MAX2(new_size, min_size()), max_size());
149
150 size_t aligned_new_size = align_object_size(new_size);
151
152 log_trace(gc, tlab)("TLAB new size: thread: " INTPTR_FORMAT " [id: %2d]"
153 " refills %d alloc: %8.6f desired_size: " SIZE_FORMAT " -> " SIZE_FORMAT,
154 p2i(thread()), thread()->osthread()->thread_id(),
155 _target_refills, _allocation_fraction.average(), desired_size(), aligned_new_size);
156
157 set_desired_size(aligned_new_size);
158 set_refill_waste_limit(initial_refill_waste_limit());
159 }
160
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