Mercurial > jdk8-mips64-public > hotspot / file comparison

comparison: src/share/vm/gc_implementation/parallelScavenge/psPromotionManager.inline.hpp

src/share/vm/gc_implementation/parallelScavenge/psPromotionManager.inline.hpp

changeset 9858
b985cbb00e68
parent 7031
ee019285a52c
child 9931
fd44df5e3bc3
equal deleted inserted replaced
9727:c7a3e57fdf4a 9858:b985cbb00e68
62 assert(Universe::heap()->is_in(p), "pointer outside heap"); 62 assert(Universe::heap()->is_in(p), "pointer outside heap");
63 63
64 claim_or_forward_internal_depth(p); 64 claim_or_forward_internal_depth(p);
65 } 65 }
66 66
67 inline void PSPromotionManager::promotion_trace_event(oop new_obj, oop old_obj,
68 size_t obj_size,
69 uint age, bool tenured,
70 const PSPromotionLAB* lab) {
71 // Skip if memory allocation failed
72 if (new_obj != NULL) {
73 const ParallelScavengeTracer* gc_tracer = PSScavenge::gc_tracer();
74
75 if (lab != NULL) {
76 // Promotion of object through newly allocated PLAB
77 if (gc_tracer->should_report_promotion_in_new_plab_event()) {
78 size_t obj_bytes = obj_size * HeapWordSize;
79 size_t lab_size = lab->capacity();
80 gc_tracer->report_promotion_in_new_plab_event(old_obj->klass(), obj_bytes,
81 age, tenured, lab_size);
82 }
83 } else {
84 // Promotion of object directly to heap
85 if (gc_tracer->should_report_promotion_outside_plab_event()) {
86 size_t obj_bytes = obj_size * HeapWordSize;
87 gc_tracer->report_promotion_outside_plab_event(old_obj->klass(), obj_bytes,
88 age, tenured);
89 }
90 }
91 }
92 }
93
67 // 94 //
68 // This method is pretty bulky. It would be nice to split it up 95 // This method is pretty bulky. It would be nice to split it up
69 // into smaller submethods, but we need to be careful not to hurt 96 // into smaller submethods, but we need to be careful not to hurt
70 // performance. 97 // performance.
71 // 98 //
83 // The same test as "o->is_forwarded()" 110 // The same test as "o->is_forwarded()"
84 if (!test_mark->is_marked()) { 111 if (!test_mark->is_marked()) {
85 bool new_obj_is_tenured = false; 112 bool new_obj_is_tenured = false;
86 size_t new_obj_size = o->size(); 113 size_t new_obj_size = o->size();
87 114
115 // Find the objects age, MT safe.
116 uint age = (test_mark->has_displaced_mark_helper() /* o->has_displaced_mark() */) ?
117 test_mark->displaced_mark_helper()->age() : test_mark->age();
118
88 if (!promote_immediately) { 119 if (!promote_immediately) {
89 // Find the objects age, MT safe.
90 uint age = (test_mark->has_displaced_mark_helper() /* o->has_displaced_mark() */) ?
91 test_mark->displaced_mark_helper()->age() : test_mark->age();
92
93 // Try allocating obj in to-space (unless too old) 120 // Try allocating obj in to-space (unless too old)
94 if (age < PSScavenge::tenuring_threshold()) { 121 if (age < PSScavenge::tenuring_threshold()) {
95 new_obj = (oop) _young_lab.allocate(new_obj_size); 122 new_obj = (oop) _young_lab.allocate(new_obj_size);
96 if (new_obj == NULL && !_young_gen_is_full) { 123 if (new_obj == NULL && !_young_gen_is_full) {
97 // Do we allocate directly, or flush and refill? 124 // Do we allocate directly, or flush and refill?
98 if (new_obj_size > (YoungPLABSize / 2)) { 125 if (new_obj_size > (YoungPLABSize / 2)) {
99 // Allocate this object directly 126 // Allocate this object directly
100 new_obj = (oop)young_space()->cas_allocate(new_obj_size); 127 new_obj = (oop)young_space()->cas_allocate(new_obj_size);
128 promotion_trace_event(new_obj, o, new_obj_size, age, false, NULL);
101 } else { 129 } else {
102 // Flush and fill 130 // Flush and fill
103 _young_lab.flush(); 131 _young_lab.flush();
104 132
105 HeapWord* lab_base = young_space()->cas_allocate(YoungPLABSize); 133 HeapWord* lab_base = young_space()->cas_allocate(YoungPLABSize);
106 if (lab_base != NULL) { 134 if (lab_base != NULL) {
107 _young_lab.initialize(MemRegion(lab_base, YoungPLABSize)); 135 _young_lab.initialize(MemRegion(lab_base, YoungPLABSize));
108 // Try the young lab allocation again. 136 // Try the young lab allocation again.
109 new_obj = (oop) _young_lab.allocate(new_obj_size); 137 new_obj = (oop) _young_lab.allocate(new_obj_size);
138 promotion_trace_event(new_obj, o, new_obj_size, age, false, &_young_lab);
110 } else { 139 } else {
111 _young_gen_is_full = true; 140 _young_gen_is_full = true;
112 } 141 }
113 } 142 }
114 } 143 }
130 if (!_old_gen_is_full) { 159 if (!_old_gen_is_full) {
131 // Do we allocate directly, or flush and refill? 160 // Do we allocate directly, or flush and refill?
132 if (new_obj_size > (OldPLABSize / 2)) { 161 if (new_obj_size > (OldPLABSize / 2)) {
133 // Allocate this object directly 162 // Allocate this object directly
134 new_obj = (oop)old_gen()->cas_allocate(new_obj_size); 163 new_obj = (oop)old_gen()->cas_allocate(new_obj_size);
164 promotion_trace_event(new_obj, o, new_obj_size, age, true, NULL);
135 } else { 165 } else {
136 // Flush and fill 166 // Flush and fill
137 _old_lab.flush(); 167 _old_lab.flush();
138 168
139 HeapWord* lab_base = old_gen()->cas_allocate(OldPLABSize); 169 HeapWord* lab_base = old_gen()->cas_allocate(OldPLABSize);
146 } 176 }
147 #endif 177 #endif
148 _old_lab.initialize(MemRegion(lab_base, OldPLABSize)); 178 _old_lab.initialize(MemRegion(lab_base, OldPLABSize));
149 // Try the old lab allocation again. 179 // Try the old lab allocation again.
150 new_obj = (oop) _old_lab.allocate(new_obj_size); 180 new_obj = (oop) _old_lab.allocate(new_obj_size);
181 promotion_trace_event(new_obj, o, new_obj_size, age, true, &_old_lab);
151 } 182 }
152 } 183 }
153 } 184 }
154 185
155 // This is the promotion failed test, and code handling. 186 // This is the promotion failed test, and code handling.

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