Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
- changeset 1296
- 45d97a99715b
- parent 1281
- 42d84bbbecf4
- child 1297
- 36b5611220a7
equal
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inserted
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| 1282:f0a1cbbaf3c0 | 1296:45d97a99715b |
|---|---|
| 2979 // First, let's check that the GC alloc region list is empty (it should) | 2979 // First, let's check that the GC alloc region list is empty (it should) |
| 2980 assert(_gc_alloc_region_list == NULL, "invariant"); | 2980 assert(_gc_alloc_region_list == NULL, "invariant"); |
| 2981 | 2981 |
| 2982 for (int ap = 0; ap < GCAllocPurposeCount; ++ap) { | 2982 for (int ap = 0; ap < GCAllocPurposeCount; ++ap) { |
| 2983 assert(_gc_alloc_regions[ap] == NULL, "invariant"); | 2983 assert(_gc_alloc_regions[ap] == NULL, "invariant"); |
| 2984 assert(_gc_alloc_region_counts[ap] == 0, "invariant"); | |
| 2984 | 2985 |
| 2985 // Create new GC alloc regions. | 2986 // Create new GC alloc regions. |
| 2986 HeapRegion* alloc_region = _retained_gc_alloc_regions[ap]; | 2987 HeapRegion* alloc_region = _retained_gc_alloc_regions[ap]; |
| 2987 _retained_gc_alloc_regions[ap] = NULL; | 2988 _retained_gc_alloc_regions[ap] = NULL; |
| 2988 | 2989 |
| 3007 } | 3008 } |
| 3008 | 3009 |
| 3009 if (alloc_region == NULL) { | 3010 if (alloc_region == NULL) { |
| 3010 // we will get a new GC alloc region | 3011 // we will get a new GC alloc region |
| 3011 alloc_region = newAllocRegionWithExpansion(ap, 0); | 3012 alloc_region = newAllocRegionWithExpansion(ap, 0); |
| 3013 } else { | |
| 3014 // the region was retained from the last collection | |
| 3015 ++_gc_alloc_region_counts[ap]; | |
| 3012 } | 3016 } |
| 3013 | 3017 |
| 3014 if (alloc_region != NULL) { | 3018 if (alloc_region != NULL) { |
| 3015 assert(_gc_alloc_regions[ap] == NULL, "pre-condition"); | 3019 assert(_gc_alloc_regions[ap] == NULL, "pre-condition"); |
| 3016 set_gc_alloc_region(ap, alloc_region); | 3020 set_gc_alloc_region(ap, alloc_region); |
| 3045 // The current alloc regions contain objs that have survived | 3049 // The current alloc regions contain objs that have survived |
| 3046 // collection. Make them no longer GC alloc regions. | 3050 // collection. Make them no longer GC alloc regions. |
| 3047 for (int ap = 0; ap < GCAllocPurposeCount; ++ap) { | 3051 for (int ap = 0; ap < GCAllocPurposeCount; ++ap) { |
| 3048 HeapRegion* r = _gc_alloc_regions[ap]; | 3052 HeapRegion* r = _gc_alloc_regions[ap]; |
| 3049 _retained_gc_alloc_regions[ap] = NULL; | 3053 _retained_gc_alloc_regions[ap] = NULL; |
| 3054 _gc_alloc_region_counts[ap] = 0; | |
| 3050 | 3055 |
| 3051 if (r != NULL) { | 3056 if (r != NULL) { |
| 3052 // we retain nothing on _gc_alloc_regions between GCs | 3057 // we retain nothing on _gc_alloc_regions between GCs |
| 3053 set_gc_alloc_region(ap, NULL); | 3058 set_gc_alloc_region(ap, NULL); |
| 3054 _gc_alloc_region_counts[ap] = 0; | |
| 3055 | 3059 |
| 3056 if (r->is_empty()) { | 3060 if (r->is_empty()) { |
| 3057 // we didn't actually allocate anything in it; let's just put | 3061 // we didn't actually allocate anything in it; let's just put |
| 3058 // it on the free list | 3062 // it on the free list |
| 3059 MutexLockerEx x(ZF_mon, Mutex::_no_safepoint_check_flag); | 3063 MutexLockerEx x(ZF_mon, Mutex::_no_safepoint_check_flag); |
