48 }
49
50 size_t G1CollectedHeap::desired_plab_sz(InCSetState dest) {
51 size_t gclab_word_size = alloc_buffer_stats(dest)->desired_plab_sz(G1CollectedHeap::heap()->workers()->active_workers());
52 // Prevent humongous PLAB sizes for two reasons:
53 // * PLABs are allocated using a similar paths as oops, but should
54 // never be in a humongous region
55 // * Allowing humongous PLABs needlessly churns the region free lists
56 return MIN2(_humongous_object_threshold_in_words, gclab_word_size);
57 }
58
59 // Inline functions for G1CollectedHeap
60
61 inline AllocationContextStats& G1CollectedHeap::allocation_context_stats() {
62 return _allocation_context_stats;
63 }
64
65 // Return the region with the given index. It assumes the index is valid.
66 inline HeapRegion* G1CollectedHeap::region_at(uint index) const { return _hrm.at(index); }
67
68 inline HeapRegion* G1CollectedHeap::next_humongous_region(HeapRegion* hr) const {
69 return _hrm.next_humongous_region(hr);
70 }
71
72 inline uint G1CollectedHeap::addr_to_region(HeapWord* addr) const {
73 assert(is_in_reserved(addr),
74 "Cannot calculate region index for address " PTR_FORMAT " that is outside of the heap [" PTR_FORMAT ", " PTR_FORMAT ")",
75 p2i(addr), p2i(reserved_region().start()), p2i(reserved_region().end()));
76 return (uint)(pointer_delta(addr, reserved_region().start(), sizeof(uint8_t)) >> HeapRegion::LogOfHRGrainBytes);
77 }
78
79 inline HeapWord* G1CollectedHeap::bottom_addr_for_region(uint index) const {
80 return _hrm.reserved().start() + index * HeapRegion::GrainWords;
81 }
82
83 template <class T>
84 inline HeapRegion* G1CollectedHeap::heap_region_containing(const T addr) const {
85 assert(addr != NULL, "invariant");
86 assert(is_in_g1_reserved((const void*) addr),
87 "Address " PTR_FORMAT " is outside of the heap ranging from [" PTR_FORMAT " to " PTR_FORMAT ")",
88 p2i((void*)addr), p2i(g1_reserved().start()), p2i(g1_reserved().end()));
89 return _hrm.addr_to_region((HeapWord*) addr);
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48 }
49
50 size_t G1CollectedHeap::desired_plab_sz(InCSetState dest) {
51 size_t gclab_word_size = alloc_buffer_stats(dest)->desired_plab_sz(G1CollectedHeap::heap()->workers()->active_workers());
52 // Prevent humongous PLAB sizes for two reasons:
53 // * PLABs are allocated using a similar paths as oops, but should
54 // never be in a humongous region
55 // * Allowing humongous PLABs needlessly churns the region free lists
56 return MIN2(_humongous_object_threshold_in_words, gclab_word_size);
57 }
58
59 // Inline functions for G1CollectedHeap
60
61 inline AllocationContextStats& G1CollectedHeap::allocation_context_stats() {
62 return _allocation_context_stats;
63 }
64
65 // Return the region with the given index. It assumes the index is valid.
66 inline HeapRegion* G1CollectedHeap::region_at(uint index) const { return _hrm.at(index); }
67
68 inline HeapRegion* G1CollectedHeap::next_region_in_humongous(HeapRegion* hr) const {
69 return _hrm.next_region_in_humongous(hr);
70 }
71
72 inline uint G1CollectedHeap::addr_to_region(HeapWord* addr) const {
73 assert(is_in_reserved(addr),
74 "Cannot calculate region index for address " PTR_FORMAT " that is outside of the heap [" PTR_FORMAT ", " PTR_FORMAT ")",
75 p2i(addr), p2i(reserved_region().start()), p2i(reserved_region().end()));
76 return (uint)(pointer_delta(addr, reserved_region().start(), sizeof(uint8_t)) >> HeapRegion::LogOfHRGrainBytes);
77 }
78
79 inline HeapWord* G1CollectedHeap::bottom_addr_for_region(uint index) const {
80 return _hrm.reserved().start() + index * HeapRegion::GrainWords;
81 }
82
83 template <class T>
84 inline HeapRegion* G1CollectedHeap::heap_region_containing(const T addr) const {
85 assert(addr != NULL, "invariant");
86 assert(is_in_g1_reserved((const void*) addr),
87 "Address " PTR_FORMAT " is outside of the heap ranging from [" PTR_FORMAT " to " PTR_FORMAT ")",
88 p2i((void*)addr), p2i(g1_reserved().start()), p2i(g1_reserved().end()));
89 return _hrm.addr_to_region((HeapWord*) addr);
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