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annotate src/share/vm/gc_implementation/concurrentMarkSweep/cmsCollectorPolicy.cpp @ 1763:d6f45b55c972
4809552: Optimize Arrays.fill(...)
Reviewed-by: kvn
author | never |
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date | Fri, 27 Aug 2010 17:33:49 -0700 |
parents | c18cbe5936b8 |
children | 8b10f48633dc |
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0 | 1 /* |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 # include "incls/_precompiled.incl" | |
26 # include "incls/_cmsCollectorPolicy.cpp.incl" | |
27 | |
28 // | |
29 // ConcurrentMarkSweepPolicy methods | |
30 // | |
31 | |
32 ConcurrentMarkSweepPolicy::ConcurrentMarkSweepPolicy() { | |
33 initialize_all(); | |
34 } | |
35 | |
36 void ConcurrentMarkSweepPolicy::initialize_generations() { | |
37 initialize_perm_generation(PermGen::ConcurrentMarkSweep); | |
38 _generations = new GenerationSpecPtr[number_of_generations()]; | |
39 if (_generations == NULL) | |
40 vm_exit_during_initialization("Unable to allocate gen spec"); | |
41 | |
42 if (UseParNewGC && ParallelGCThreads > 0) { | |
43 if (UseAdaptiveSizePolicy) { | |
44 _generations[0] = new GenerationSpec(Generation::ASParNew, | |
45 _initial_gen0_size, _max_gen0_size); | |
46 } else { | |
47 _generations[0] = new GenerationSpec(Generation::ParNew, | |
48 _initial_gen0_size, _max_gen0_size); | |
49 } | |
50 } else { | |
51 _generations[0] = new GenerationSpec(Generation::DefNew, | |
52 _initial_gen0_size, _max_gen0_size); | |
53 } | |
54 if (UseAdaptiveSizePolicy) { | |
55 _generations[1] = new GenerationSpec(Generation::ASConcurrentMarkSweep, | |
56 _initial_gen1_size, _max_gen1_size); | |
57 } else { | |
58 _generations[1] = new GenerationSpec(Generation::ConcurrentMarkSweep, | |
59 _initial_gen1_size, _max_gen1_size); | |
60 } | |
61 | |
62 if (_generations[0] == NULL || _generations[1] == NULL) { | |
63 vm_exit_during_initialization("Unable to allocate gen spec"); | |
64 } | |
65 } | |
66 | |
67 void ConcurrentMarkSweepPolicy::initialize_size_policy(size_t init_eden_size, | |
68 size_t init_promo_size, | |
69 size_t init_survivor_size) { | |
70 double max_gc_minor_pause_sec = ((double) MaxGCMinorPauseMillis)/1000.0; | |
71 double max_gc_pause_sec = ((double) MaxGCPauseMillis)/1000.0; | |
72 _size_policy = new CMSAdaptiveSizePolicy(init_eden_size, | |
73 init_promo_size, | |
74 init_survivor_size, | |
75 max_gc_minor_pause_sec, | |
76 max_gc_pause_sec, | |
77 GCTimeRatio); | |
78 } | |
79 | |
80 void ConcurrentMarkSweepPolicy::initialize_gc_policy_counters() { | |
81 // initialize the policy counters - 2 collectors, 3 generations | |
82 if (UseParNewGC && ParallelGCThreads > 0) { | |
83 _gc_policy_counters = new GCPolicyCounters("ParNew:CMS", 2, 3); | |
84 } | |
85 else { | |
86 _gc_policy_counters = new GCPolicyCounters("Copy:CMS", 2, 3); | |
87 } | |
88 } | |
89 | |
90 // Returns true if the incremental mode is enabled. | |
91 bool ConcurrentMarkSweepPolicy::has_soft_ended_eden() | |
92 { | |
93 return CMSIncrementalMode; | |
94 } | |
95 | |
96 | |
97 // | |
98 // ASConcurrentMarkSweepPolicy methods | |
99 // | |
100 | |
101 void ASConcurrentMarkSweepPolicy::initialize_gc_policy_counters() { | |
102 | |
103 assert(size_policy() != NULL, "A size policy is required"); | |
104 // initialize the policy counters - 2 collectors, 3 generations | |
105 if (UseParNewGC && ParallelGCThreads > 0) { | |
106 _gc_policy_counters = new CMSGCAdaptivePolicyCounters("ParNew:CMS", 2, 3, | |
107 size_policy()); | |
108 } | |
109 else { | |
110 _gc_policy_counters = new CMSGCAdaptivePolicyCounters("Copy:CMS", 2, 3, | |
111 size_policy()); | |
112 } | |
113 } |