48 {
49 HeapWord* bottom = (HeapWord*) _virtual_space.low();
50 HeapWord* end = (HeapWord*) _virtual_space.high();
51 _the_space = new TenuredSpace(_bts, MemRegion(bottom, end));
52 _the_space->reset_saved_mark();
53 _shrink_factor = 0;
54 _capacity_at_prologue = 0;
55
56 _gc_stats = new GCStats();
57
58 // initialize performance counters
59
60 const char* gen_name = "old";
61 GenCollectorPolicy* gcp = GenCollectedHeap::heap()->gen_policy();
62 // Generation Counters -- generation 1, 1 subspace
63 _gen_counters = new GenerationCounters(gen_name, 1, 1,
64 gcp->min_old_size(), gcp->max_old_size(), &_virtual_space);
65
66 _gc_counters = new CollectorCounters("MSC", 1);
67
68 _space_counters = new CSpaceCounters(gen_name, 0,
69 _virtual_space.reserved_size(),
70 _the_space, _gen_counters);
71 }
72
73 void TenuredGeneration::gc_prologue(bool full) {
74 _capacity_at_prologue = capacity();
75 _used_at_prologue = used();
76 }
77
78 bool TenuredGeneration::should_collect(bool full,
79 size_t size,
80 bool is_tlab) {
81 // This should be one big conditional or (||), but I want to be able to tell
82 // why it returns what it returns (without re-evaluating the conditionals
83 // in case they aren't idempotent), so I'm doing it this way.
84 // DeMorgan says it's okay.
85 if (full) {
86 log_trace(gc)("TenuredGeneration::should_collect: because full");
87 return true;
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48 {
49 HeapWord* bottom = (HeapWord*) _virtual_space.low();
50 HeapWord* end = (HeapWord*) _virtual_space.high();
51 _the_space = new TenuredSpace(_bts, MemRegion(bottom, end));
52 _the_space->reset_saved_mark();
53 _shrink_factor = 0;
54 _capacity_at_prologue = 0;
55
56 _gc_stats = new GCStats();
57
58 // initialize performance counters
59
60 const char* gen_name = "old";
61 GenCollectorPolicy* gcp = GenCollectedHeap::heap()->gen_policy();
62 // Generation Counters -- generation 1, 1 subspace
63 _gen_counters = new GenerationCounters(gen_name, 1, 1,
64 gcp->min_old_size(), gcp->max_old_size(), &_virtual_space);
65
66 _gc_counters = new CollectorCounters("MSC", 1);
67
68 // Dummy counter
69 new CollectorCounters("dummy", 2);
70
71 _space_counters = new CSpaceCounters(gen_name, 0,
72 _virtual_space.reserved_size(),
73 _the_space, _gen_counters);
74 }
75
76 void TenuredGeneration::gc_prologue(bool full) {
77 _capacity_at_prologue = capacity();
78 _used_at_prologue = used();
79 }
80
81 bool TenuredGeneration::should_collect(bool full,
82 size_t size,
83 bool is_tlab) {
84 // This should be one big conditional or (||), but I want to be able to tell
85 // why it returns what it returns (without re-evaluating the conditionals
86 // in case they aren't idempotent), so I'm doing it this way.
87 // DeMorgan says it's okay.
88 if (full) {
89 log_trace(gc)("TenuredGeneration::should_collect: because full");
90 return true;
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