--- a/hotspot/src/share/vm/gc/g1/g1Allocator.hpp Thu Aug 20 10:27:04 2015 +0200
+++ b/hotspot/src/share/vm/gc/g1/g1Allocator.hpp Wed Aug 19 13:47:40 2015 +0200
@@ -38,11 +38,20 @@
// Also keeps track of retained regions across GCs.
class G1Allocator : public CHeapObj<mtGC> {
friend class VMStructs;
+private:
+ bool _survivor_is_full;
+ bool _old_is_full;
protected:
G1CollectedHeap* _g1h;
virtual MutatorAllocRegion* mutator_alloc_region(AllocationContext_t context) = 0;
+ virtual bool survivor_is_full(AllocationContext_t context) const;
+ virtual bool old_is_full(AllocationContext_t context) const;
+
+ virtual void set_survivor_full(AllocationContext_t context);
+ virtual void set_old_full(AllocationContext_t context);
+
// Accessors to the allocation regions.
virtual SurvivorGCAllocRegion* survivor_gc_alloc_region(AllocationContext_t context) = 0;
virtual OldGCAllocRegion* old_gc_alloc_region(AllocationContext_t context) = 0;
@@ -54,7 +63,7 @@
inline HeapWord* old_attempt_allocation(size_t word_size,
AllocationContext_t context);
public:
- G1Allocator(G1CollectedHeap* heap) : _g1h(heap) { }
+ G1Allocator(G1CollectedHeap* heap) : _g1h(heap), _survivor_is_full(false), _old_is_full(false) { }
virtual ~G1Allocator() { }
static G1Allocator* create_allocator(G1CollectedHeap* g1h);
@@ -66,7 +75,7 @@
virtual void init_mutator_alloc_region() = 0;
virtual void release_mutator_alloc_region() = 0;
- virtual void init_gc_alloc_regions(EvacuationInfo& evacuation_info) = 0;
+ virtual void init_gc_alloc_regions(EvacuationInfo& evacuation_info);
virtual void release_gc_alloc_regions(EvacuationInfo& evacuation_info) = 0;
virtual void abandon_gc_alloc_regions() = 0;
@@ -215,6 +224,10 @@
}
}
+ HeapWord* allocate_new_plab(InCSetState dest,
+ size_t word_sz,
+ AllocationContext_t context);
+
public:
G1PLABAllocator(G1Allocator* allocator);
virtual ~G1PLABAllocator() { }
@@ -225,10 +238,12 @@
// Allocate word_sz words in dest, either directly into the regions or by
// allocating a new PLAB. Returns the address of the allocated memory, NULL if
- // not successful.
+ // not successful. Plab_refill_failed indicates whether an attempt to refill the
+ // PLAB failed or not.
HeapWord* allocate_direct_or_new_plab(InCSetState dest,
size_t word_sz,
- AllocationContext_t context);
+ AllocationContext_t context,
+ bool* plab_refill_failed);
// Allocate word_sz words in the PLAB of dest. Returns the address of the
// allocated memory, NULL if not successful.
@@ -243,13 +258,15 @@
}
}
- HeapWord* allocate(InCSetState dest, size_t word_sz,
- AllocationContext_t context) {
+ HeapWord* allocate(InCSetState dest,
+ size_t word_sz,
+ AllocationContext_t context,
+ bool* refill_failed) {
HeapWord* const obj = plab_allocate(dest, word_sz, context);
if (obj != NULL) {
return obj;
}
- return allocate_direct_or_new_plab(dest, word_sz, context);
+ return allocate_direct_or_new_plab(dest, word_sz, context, refill_failed);
}
void undo_allocation(InCSetState dest, HeapWord* obj, size_t word_sz, AllocationContext_t context);