Mercurial > hg > truffle
diff src/share/vm/memory/universe.hpp @ 113:ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv
Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
| author | coleenp |
|---|---|
| date | Sun, 13 Apr 2008 17:43:42 -0400 |
| parents | a61af66fc99e |
| children | d1605aabd0a1 |
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--- a/src/share/vm/memory/universe.hpp Fri Apr 11 09:56:35 2008 -0400 +++ b/src/share/vm/memory/universe.hpp Sun Apr 13 17:43:42 2008 -0400 @@ -180,10 +180,13 @@ // The particular choice of collected heap. static CollectedHeap* _collectedHeap; + // Base address for oop-within-java-object materialization. + // NULL if using wide oops. Doubles as heap oop null value. + static address _heap_base; // array of dummy objects used with +FullGCAlot debug_only(static objArrayOop _fullgc_alot_dummy_array;) - // index of next entry to clear + // index of next entry to clear debug_only(static int _fullgc_alot_dummy_next;) // Compiler/dispatch support @@ -323,6 +326,10 @@ // The particular choice of collected heap. static CollectedHeap* heap() { return _collectedHeap; } + // For UseCompressedOops + static address heap_base() { return _heap_base; } + static address* heap_base_addr() { return &_heap_base; } + // Historic gc information static size_t get_heap_capacity_at_last_gc() { return _heap_capacity_at_last_gc; } static size_t get_heap_free_at_last_gc() { return _heap_capacity_at_last_gc - _heap_used_at_last_gc; }