96 _retained_old_gc_alloc_region = old_gc_alloc_region(context)->release();
97 if (_retained_old_gc_alloc_region != NULL) {
98 _retained_old_gc_alloc_region->record_retained_region();
99 }
100
101 if (ResizePLAB) {
102 _g1h->_survivor_plab_stats.adjust_desired_plab_sz(no_of_gc_workers);
103 _g1h->_old_plab_stats.adjust_desired_plab_sz(no_of_gc_workers);
104 }
105 }
106
107 void G1DefaultAllocator::abandon_gc_alloc_regions() {
108 assert(survivor_gc_alloc_region(AllocationContext::current())->get() == NULL, "pre-condition");
109 assert(old_gc_alloc_region(AllocationContext::current())->get() == NULL, "pre-condition");
110 _retained_old_gc_alloc_region = NULL;
111 }
112
113 G1ParGCAllocBuffer::G1ParGCAllocBuffer(size_t gclab_word_size) :
114 ParGCAllocBuffer(gclab_word_size), _retired(true) { }
115
116 HeapWord* G1ParGCAllocator::allocate_slow(GCAllocPurpose purpose, size_t word_sz, AllocationContext_t context) {
117 HeapWord* obj = NULL;
118 size_t gclab_word_size = _g1h->desired_plab_sz(purpose);
119 if (word_sz * 100 < gclab_word_size * ParallelGCBufferWastePct) {
120 G1ParGCAllocBuffer* alloc_buf = alloc_buffer(purpose, context);
121 add_to_alloc_buffer_waste(alloc_buf->words_remaining());
122 alloc_buf->retire(false /* end_of_gc */, false /* retain */);
123
124 HeapWord* buf = _g1h->par_allocate_during_gc(purpose, gclab_word_size, context);
125 if (buf == NULL) {
126 return NULL; // Let caller handle allocation failure.
127 }
128 // Otherwise.
129 alloc_buf->set_word_size(gclab_word_size);
130 alloc_buf->set_buf(buf);
131
132 obj = alloc_buf->allocate(word_sz);
133 assert(obj != NULL, "buffer was definitely big enough...");
134 } else {
135 obj = _g1h->par_allocate_during_gc(purpose, word_sz, context);
136 }
137 return obj;
138 }
139
140 G1DefaultParGCAllocator::G1DefaultParGCAllocator(G1CollectedHeap* g1h) :
141 G1ParGCAllocator(g1h),
142 _surviving_alloc_buffer(g1h->desired_plab_sz(GCAllocForSurvived)),
143 _tenured_alloc_buffer(g1h->desired_plab_sz(GCAllocForTenured)) {
144
145 _alloc_buffers[GCAllocForSurvived] = &_surviving_alloc_buffer;
146 _alloc_buffers[GCAllocForTenured] = &_tenured_alloc_buffer;
147
148 }
149
150 void G1DefaultParGCAllocator::retire_alloc_buffers() {
151 for (int ap = 0; ap < GCAllocPurposeCount; ++ap) {
152 size_t waste = _alloc_buffers[ap]->words_remaining();
153 add_to_alloc_buffer_waste(waste);
154 _alloc_buffers[ap]->flush_stats_and_retire(_g1h->stats_for_purpose((GCAllocPurpose)ap),
155 true /* end_of_gc */,
156 false /* retain */);
157 }
158 }
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96 _retained_old_gc_alloc_region = old_gc_alloc_region(context)->release();
97 if (_retained_old_gc_alloc_region != NULL) {
98 _retained_old_gc_alloc_region->record_retained_region();
99 }
100
101 if (ResizePLAB) {
102 _g1h->_survivor_plab_stats.adjust_desired_plab_sz(no_of_gc_workers);
103 _g1h->_old_plab_stats.adjust_desired_plab_sz(no_of_gc_workers);
104 }
105 }
106
107 void G1DefaultAllocator::abandon_gc_alloc_regions() {
108 assert(survivor_gc_alloc_region(AllocationContext::current())->get() == NULL, "pre-condition");
109 assert(old_gc_alloc_region(AllocationContext::current())->get() == NULL, "pre-condition");
110 _retained_old_gc_alloc_region = NULL;
111 }
112
113 G1ParGCAllocBuffer::G1ParGCAllocBuffer(size_t gclab_word_size) :
114 ParGCAllocBuffer(gclab_word_size), _retired(true) { }
115
116 HeapWord* G1ParGCAllocator::allocate_direct_or_new_plab(in_cset_state_t dest,
117 size_t word_sz,
118 AllocationContext_t context) {
119 size_t gclab_word_size = _g1h->desired_plab_sz(dest);
120 if (word_sz * 100 < gclab_word_size * ParallelGCBufferWastePct) {
121 G1ParGCAllocBuffer* alloc_buf = alloc_buffer(dest, context);
122 add_to_alloc_buffer_waste(alloc_buf->words_remaining());
123 alloc_buf->retire(false /* end_of_gc */, false /* retain */);
124
125 HeapWord* buf = _g1h->par_allocate_during_gc(dest, gclab_word_size, context);
126 if (buf == NULL) {
127 return NULL; // Let caller handle allocation failure.
128 }
129 // Otherwise.
130 alloc_buf->set_word_size(gclab_word_size);
131 alloc_buf->set_buf(buf);
132
133 HeapWord* const obj = alloc_buf->allocate(word_sz);
134 assert(obj != NULL, "buffer was definitely big enough...");
135 return obj;
136 } else {
137 return _g1h->par_allocate_during_gc(dest, word_sz, context);
138 }
139 }
140
141 G1DefaultParGCAllocator::G1DefaultParGCAllocator(G1CollectedHeap* g1h) :
142 G1ParGCAllocator(g1h),
143 _surviving_alloc_buffer(g1h->desired_plab_sz(InCSetState::Young)),
144 _tenured_alloc_buffer(g1h->desired_plab_sz(InCSetState::Old)) {
145 for (uint i = 0; i < InCSetState::Num; i += 1) {
146 _alloc_buffers[i] = NULL;
147 }
148 _alloc_buffers[InCSetState::Young] = &_surviving_alloc_buffer;
149 _alloc_buffers[InCSetState::Old] = &_tenured_alloc_buffer;
150 }
151
152 void G1DefaultParGCAllocator::retire_alloc_buffers() {
153 for (uint i = 0; i < InCSetState::Num; i += 1) {
154 G1ParGCAllocBuffer* const buf = _alloc_buffers[i];
155 if (buf != NULL) {
156 add_to_alloc_buffer_waste(buf->words_remaining());
157 buf->flush_stats_and_retire(_g1h->alloc_buffer_stats(i),
158 true /* end_of_gc */,
159 false /* retain */);
160 }
161 }
162 }
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