30 #include "gc/g1/g1CollectorState.hpp"
31 #include "gc/g1/g1ConcurrentMark.inline.hpp"
32 #include "gc/g1/heapRegionManager.inline.hpp"
33 #include "gc/g1/heapRegionSet.inline.hpp"
34 #include "gc/shared/taskqueue.hpp"
35 #include "runtime/orderAccess.inline.hpp"
36
37 G1EvacStats* G1CollectedHeap::alloc_buffer_stats(InCSetState dest) {
38 switch (dest.value()) {
39 case InCSetState::Young:
40 return &_survivor_evac_stats;
41 case InCSetState::Old:
42 return &_old_evac_stats;
43 default:
44 ShouldNotReachHere();
45 return NULL; // Keep some compilers happy
46 }
47 }
48
49 size_t G1CollectedHeap::desired_plab_sz(InCSetState dest) {
50 size_t gclab_word_size = alloc_buffer_stats(dest)->desired_plab_sz(G1CollectedHeap::heap()->workers()->active_workers());
51 // Prevent humongous PLAB sizes for two reasons:
52 // * PLABs are allocated using a similar paths as oops, but should
53 // never be in a humongous region
54 // * Allowing humongous PLABs needlessly churns the region free lists
55 return MIN2(_humongous_object_threshold_in_words, gclab_word_size);
56 }
57
58 // Inline functions for G1CollectedHeap
59
60 // Return the region with the given index. It assumes the index is valid.
61 inline HeapRegion* G1CollectedHeap::region_at(uint index) const { return _hrm.at(index); }
62
63 inline HeapRegion* G1CollectedHeap::next_region_in_humongous(HeapRegion* hr) const {
64 return _hrm.next_region_in_humongous(hr);
65 }
66
67 inline uint G1CollectedHeap::addr_to_region(HeapWord* addr) const {
68 assert(is_in_reserved(addr),
69 "Cannot calculate region index for address " PTR_FORMAT " that is outside of the heap [" PTR_FORMAT ", " PTR_FORMAT ")",
70 p2i(addr), p2i(reserved_region().start()), p2i(reserved_region().end()));
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30 #include "gc/g1/g1CollectorState.hpp"
31 #include "gc/g1/g1ConcurrentMark.inline.hpp"
32 #include "gc/g1/heapRegionManager.inline.hpp"
33 #include "gc/g1/heapRegionSet.inline.hpp"
34 #include "gc/shared/taskqueue.hpp"
35 #include "runtime/orderAccess.inline.hpp"
36
37 G1EvacStats* G1CollectedHeap::alloc_buffer_stats(InCSetState dest) {
38 switch (dest.value()) {
39 case InCSetState::Young:
40 return &_survivor_evac_stats;
41 case InCSetState::Old:
42 return &_old_evac_stats;
43 default:
44 ShouldNotReachHere();
45 return NULL; // Keep some compilers happy
46 }
47 }
48
49 size_t G1CollectedHeap::desired_plab_sz(InCSetState dest) {
50 size_t gclab_word_size = alloc_buffer_stats(dest)->desired_plab_sz(workers()->active_workers());
51 // Prevent humongous PLAB sizes for two reasons:
52 // * PLABs are allocated using a similar paths as oops, but should
53 // never be in a humongous region
54 // * Allowing humongous PLABs needlessly churns the region free lists
55 return MIN2(_humongous_object_threshold_in_words, gclab_word_size);
56 }
57
58 // Inline functions for G1CollectedHeap
59
60 // Return the region with the given index. It assumes the index is valid.
61 inline HeapRegion* G1CollectedHeap::region_at(uint index) const { return _hrm.at(index); }
62
63 inline HeapRegion* G1CollectedHeap::next_region_in_humongous(HeapRegion* hr) const {
64 return _hrm.next_region_in_humongous(hr);
65 }
66
67 inline uint G1CollectedHeap::addr_to_region(HeapWord* addr) const {
68 assert(is_in_reserved(addr),
69 "Cannot calculate region index for address " PTR_FORMAT " that is outside of the heap [" PTR_FORMAT ", " PTR_FORMAT ")",
70 p2i(addr), p2i(reserved_region().start()), p2i(reserved_region().end()));
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