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 1795
- bda703475ded
- parent 1794
- 23b1b27ac76c
- child 1822
- 0bfd3fb24150
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replaced
| 1794:23b1b27ac76c | 1795:bda703475ded |
|---|---|
| 2940 assert(purpose >= 0 && purpose < GCAllocPurposeCount, "invalid purpose"); | 2940 assert(purpose >= 0 && purpose < GCAllocPurposeCount, "invalid purpose"); |
| 2941 // make sure we don't call set_gc_alloc_region() multiple times on | 2941 // make sure we don't call set_gc_alloc_region() multiple times on |
| 2942 // the same region | 2942 // the same region |
| 2943 assert(r == NULL || !r->is_gc_alloc_region(), | 2943 assert(r == NULL || !r->is_gc_alloc_region(), |
| 2944 "shouldn't already be a GC alloc region"); | 2944 "shouldn't already be a GC alloc region"); |
| 2945 assert(r == NULL || !r->isHumongous(), | |
| 2946 "humongous regions shouldn't be used as GC alloc regions"); | |
| 2947 | |
| 2945 HeapWord* original_top = NULL; | 2948 HeapWord* original_top = NULL; |
| 2946 if (r != NULL) | 2949 if (r != NULL) |
| 2947 original_top = r->top(); | 2950 original_top = r->top(); |
| 2948 | 2951 |
| 2949 // We will want to record the used space in r as being there before gc. | 2952 // We will want to record the used space in r as being there before gc. |
| 3082 // outside a GC operation | 3085 // outside a GC operation |
| 3083 assert(!alloc_region->is_gc_alloc_region(), "sanity"); | 3086 assert(!alloc_region->is_gc_alloc_region(), "sanity"); |
| 3084 | 3087 |
| 3085 if (alloc_region->in_collection_set() || | 3088 if (alloc_region->in_collection_set() || |
| 3086 alloc_region->top() == alloc_region->end() || | 3089 alloc_region->top() == alloc_region->end() || |
| 3087 alloc_region->top() == alloc_region->bottom()) { | 3090 alloc_region->top() == alloc_region->bottom() || |
| 3088 // we will discard the current GC alloc region if it's in the | 3091 alloc_region->isHumongous()) { |
| 3089 // collection set (it can happen!), if it's already full (no | 3092 // we will discard the current GC alloc region if |
| 3090 // point in using it), or if it's empty (this means that it | 3093 // * it's in the collection set (it can happen!), |
| 3091 // was emptied during a cleanup and it should be on the free | 3094 // * it's already full (no point in using it), |
| 3092 // list now). | 3095 // * it's empty (this means that it was emptied during |
| 3096 // a cleanup and it should be on the free list now), or | |
| 3097 // * it's humongous (this means that it was emptied | |
| 3098 // during a cleanup and was added to the free list, but | |
| 3099 // has been subseqently used to allocate a humongous | |
| 3100 // object that may be less than the region size). | |
| 3093 | 3101 |
| 3094 alloc_region = NULL; | 3102 alloc_region = NULL; |
| 3095 } | 3103 } |
| 3096 } | 3104 } |
| 3097 | 3105 |
