Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.hpp @ 10180:ebded0261dfc
8012111: Remove warning about CMS generation shrinking.
Reviewed-by: johnc, brutisso, stefank
author | jmasa |
---|---|
date | Mon, 22 Apr 2013 22:00:03 -0700 |
parents | 7b835924c31c |
children | 5534bd30c151 |
rev | line source |
---|---|
0 | 1 /* |
4914
23c0eb012d6f
6330863: vm/gc/InfiniteList.java fails intermittently due to timeout
jcoomes
parents:
4073
diff
changeset
|
2 * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1387
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1387
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1387
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PARALLELSCAVENGEHEAP_HPP |
26 #define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PARALLELSCAVENGEHEAP_HPP | |
27 | |
28 #include "gc_implementation/parallelScavenge/objectStartArray.hpp" | |
29 #include "gc_implementation/parallelScavenge/psGCAdaptivePolicyCounters.hpp" | |
30 #include "gc_implementation/parallelScavenge/psOldGen.hpp" | |
31 #include "gc_implementation/parallelScavenge/psYoungGen.hpp" | |
32 #include "gc_implementation/shared/gcPolicyCounters.hpp" | |
33 #include "gc_interface/collectedHeap.inline.hpp" | |
34 #include "utilities/ostream.hpp" | |
35 | |
0 | 36 class AdjoiningGenerations; |
37 class GCTaskManager; | |
38 class PSAdaptiveSizePolicy; | |
1387
0bfd3fb24150
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
1166
diff
changeset
|
39 class GenerationSizer; |
0bfd3fb24150
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
1166
diff
changeset
|
40 class CollectorPolicy; |
0 | 41 |
42 class ParallelScavengeHeap : public CollectedHeap { | |
43 friend class VMStructs; | |
44 private: | |
45 static PSYoungGen* _young_gen; | |
46 static PSOldGen* _old_gen; | |
47 | |
48 // Sizing policy for entire heap | |
49 static PSAdaptiveSizePolicy* _size_policy; | |
50 static PSGCAdaptivePolicyCounters* _gc_policy_counters; | |
51 | |
52 static ParallelScavengeHeap* _psh; | |
53 | |
54 size_t _young_gen_alignment; | |
55 size_t _old_gen_alignment; | |
56 | |
1387
0bfd3fb24150
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
1166
diff
changeset
|
57 GenerationSizer* _collector_policy; |
0bfd3fb24150
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
1166
diff
changeset
|
58 |
0 | 59 inline size_t set_alignment(size_t& var, size_t val); |
60 | |
61 // Collection of generations that are adjacent in the | |
62 // space reserved for the heap. | |
63 AdjoiningGenerations* _gens; | |
4914
23c0eb012d6f
6330863: vm/gc/InfiniteList.java fails intermittently due to timeout
jcoomes
parents:
4073
diff
changeset
|
64 unsigned int _death_march_count; |
0 | 65 |
66 static GCTaskManager* _gc_task_manager; // The task manager. | |
67 | |
68 protected: | |
69 static inline size_t total_invocations(); | |
70 HeapWord* allocate_new_tlab(size_t size); | |
71 | |
4914
23c0eb012d6f
6330863: vm/gc/InfiniteList.java fails intermittently due to timeout
jcoomes
parents:
4073
diff
changeset
|
72 inline bool should_alloc_in_eden(size_t size) const; |
23c0eb012d6f
6330863: vm/gc/InfiniteList.java fails intermittently due to timeout
jcoomes
parents:
4073
diff
changeset
|
73 inline void death_march_check(HeapWord* const result, size_t size); |
23c0eb012d6f
6330863: vm/gc/InfiniteList.java fails intermittently due to timeout
jcoomes
parents:
4073
diff
changeset
|
74 HeapWord* mem_allocate_old_gen(size_t size); |
23c0eb012d6f
6330863: vm/gc/InfiniteList.java fails intermittently due to timeout
jcoomes
parents:
4073
diff
changeset
|
75 |
0 | 76 public: |
77 ParallelScavengeHeap() : CollectedHeap() { | |
4914
23c0eb012d6f
6330863: vm/gc/InfiniteList.java fails intermittently due to timeout
jcoomes
parents:
4073
diff
changeset
|
78 _death_march_count = 0; |
13
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
0
diff
changeset
|
79 set_alignment(_young_gen_alignment, intra_heap_alignment()); |
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
0
diff
changeset
|
80 set_alignment(_old_gen_alignment, intra_heap_alignment()); |
0 | 81 } |
82 | |
83 // For use by VM operations | |
84 enum CollectionType { | |
85 Scavenge, | |
86 MarkSweep | |
87 }; | |
88 | |
89 ParallelScavengeHeap::Name kind() const { | |
90 return CollectedHeap::ParallelScavengeHeap; | |
91 } | |
92 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6008
diff
changeset
|
93 virtual CollectorPolicy* collector_policy() const { return (CollectorPolicy*) _collector_policy; } |
1387
0bfd3fb24150
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
1166
diff
changeset
|
94 |
0 | 95 static PSYoungGen* young_gen() { return _young_gen; } |
96 static PSOldGen* old_gen() { return _old_gen; } | |
97 | |
98 virtual PSAdaptiveSizePolicy* size_policy() { return _size_policy; } | |
99 | |
100 static PSGCAdaptivePolicyCounters* gc_policy_counters() { return _gc_policy_counters; } | |
101 | |
102 static ParallelScavengeHeap* heap(); | |
103 | |
104 static GCTaskManager* const gc_task_manager() { return _gc_task_manager; } | |
105 | |
106 AdjoiningGenerations* gens() { return _gens; } | |
107 | |
108 // Returns JNI_OK on success | |
109 virtual jint initialize(); | |
110 | |
111 void post_initialize(); | |
112 void update_counters(); | |
113 // The alignment used for the various generations. | |
114 size_t young_gen_alignment() const { return _young_gen_alignment; } | |
115 size_t old_gen_alignment() const { return _old_gen_alignment; } | |
116 | |
13
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
0
diff
changeset
|
117 // The alignment used for eden and survivors within the young gen |
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
0
diff
changeset
|
118 // and for boundary between young gen and old gen. |
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
0
diff
changeset
|
119 size_t intra_heap_alignment() const { return 64 * K; } |
0 | 120 |
121 size_t capacity() const; | |
122 size_t used() const; | |
123 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6008
diff
changeset
|
124 // Return "true" if all generations have reached the |
0 | 125 // maximal committed limit that they can reach, without a garbage |
126 // collection. | |
127 virtual bool is_maximal_no_gc() const; | |
128 | |
3377
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
1972
diff
changeset
|
129 // Return true if the reference points to an object that |
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
1972
diff
changeset
|
130 // can be moved in a partial collection. For currently implemented |
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
1972
diff
changeset
|
131 // generational collectors that means during a collection of |
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
1972
diff
changeset
|
132 // the young gen. |
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
1972
diff
changeset
|
133 virtual bool is_scavengable(const void* addr); |
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
1972
diff
changeset
|
134 |
0 | 135 // Does this heap support heap inspection? (+PrintClassHistogram) |
136 bool supports_heap_inspection() const { return true; } | |
137 | |
138 size_t max_capacity() const; | |
139 | |
140 // Whether p is in the allocated part of the heap | |
141 bool is_in(const void* p) const; | |
142 | |
143 bool is_in_reserved(const void* p) const; | |
144 | |
3377
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
1972
diff
changeset
|
145 #ifdef ASSERT |
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
1972
diff
changeset
|
146 virtual bool is_in_partial_collection(const void *p); |
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
1972
diff
changeset
|
147 #endif |
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
1972
diff
changeset
|
148 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6008
diff
changeset
|
149 bool is_in_young(oop p); // reserved part |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6008
diff
changeset
|
150 bool is_in_old(oop p); // reserved part |
0 | 151 |
152 // Memory allocation. "gc_time_limit_was_exceeded" will | |
153 // be set to true if the adaptive size policy determine that | |
154 // an excessive amount of time is being spent doing collections | |
155 // and caused a NULL to be returned. If a NULL is not returned, | |
156 // "gc_time_limit_was_exceeded" has an undefined meaning. | |
3774
c9ca3f51cf41
6994322: Remove the is_tlab and is_noref / is_large_noref parameters from the CollectedHeap
tonyp
parents:
3772
diff
changeset
|
157 HeapWord* mem_allocate(size_t size, |
c9ca3f51cf41
6994322: Remove the is_tlab and is_noref / is_large_noref parameters from the CollectedHeap
tonyp
parents:
3772
diff
changeset
|
158 bool* gc_overhead_limit_was_exceeded); |
0 | 159 |
3774
c9ca3f51cf41
6994322: Remove the is_tlab and is_noref / is_large_noref parameters from the CollectedHeap
tonyp
parents:
3772
diff
changeset
|
160 // Allocation attempt(s) during a safepoint. It should never be called |
c9ca3f51cf41
6994322: Remove the is_tlab and is_noref / is_large_noref parameters from the CollectedHeap
tonyp
parents:
3772
diff
changeset
|
161 // to allocate a new TLAB as this allocation might be satisfied out |
c9ca3f51cf41
6994322: Remove the is_tlab and is_noref / is_large_noref parameters from the CollectedHeap
tonyp
parents:
3772
diff
changeset
|
162 // of the old generation. |
c9ca3f51cf41
6994322: Remove the is_tlab and is_noref / is_large_noref parameters from the CollectedHeap
tonyp
parents:
3772
diff
changeset
|
163 HeapWord* failed_mem_allocate(size_t size); |
0 | 164 |
165 // Support for System.gc() | |
166 void collect(GCCause::Cause cause); | |
167 | |
168 // These also should be called by the vm thread at a safepoint (e.g., from a | |
169 // VM operation). | |
170 // | |
171 // The first collects the young generation only, unless the scavenge fails; it | |
172 // will then attempt a full gc. The second collects the entire heap; if | |
173 // maximum_compaction is true, it will compact everything and clear all soft | |
174 // references. | |
175 inline void invoke_scavenge(); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6008
diff
changeset
|
176 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6008
diff
changeset
|
177 // Perform a full collection |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6008
diff
changeset
|
178 virtual void do_full_collection(bool clear_all_soft_refs); |
0 | 179 |
180 bool supports_inline_contig_alloc() const { return !UseNUMA; } | |
141 | 181 |
182 HeapWord** top_addr() const { return !UseNUMA ? young_gen()->top_addr() : (HeapWord**)-1; } | |
183 HeapWord** end_addr() const { return !UseNUMA ? young_gen()->end_addr() : (HeapWord**)-1; } | |
0 | 184 |
185 void ensure_parsability(bool retire_tlabs); | |
186 void accumulate_statistics_all_tlabs(); | |
187 void resize_all_tlabs(); | |
188 | |
189 size_t unsafe_max_alloc(); | |
190 | |
191 bool supports_tlab_allocation() const { return true; } | |
192 | |
193 size_t tlab_capacity(Thread* thr) const; | |
194 size_t unsafe_max_tlab_alloc(Thread* thr) const; | |
195 | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
141
diff
changeset
|
196 // Can a compiler initialize a new object without store barriers? |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
141
diff
changeset
|
197 // This permission only extends from the creation of a new object |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
141
diff
changeset
|
198 // via a TLAB up to the first subsequent safepoint. |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
141
diff
changeset
|
199 virtual bool can_elide_tlab_store_barriers() const { |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
141
diff
changeset
|
200 return true; |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
141
diff
changeset
|
201 } |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
141
diff
changeset
|
202 |
1166 | 203 virtual bool card_mark_must_follow_store() const { |
204 return false; | |
205 } | |
206 | |
1027
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
989
diff
changeset
|
207 // Return true if we don't we need a store barrier for |
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
989
diff
changeset
|
208 // initializing stores to an object at this address. |
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
989
diff
changeset
|
209 virtual bool can_elide_initializing_store_barrier(oop new_obj); |
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
989
diff
changeset
|
210 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6008
diff
changeset
|
211 void oop_iterate(ExtendedOopClosure* cl); |
0 | 212 void object_iterate(ObjectClosure* cl); |
517
e9be0e04635a
6689653: JMapPerm fails with UseConcMarkSweepIncGC and compressed oops off
jmasa
parents:
356
diff
changeset
|
213 void safe_object_iterate(ObjectClosure* cl) { object_iterate(cl); } |
0 | 214 |
215 HeapWord* block_start(const void* addr) const; | |
216 size_t block_size(const HeapWord* addr) const; | |
217 bool block_is_obj(const HeapWord* addr) const; | |
218 | |
219 jlong millis_since_last_gc(); | |
220 | |
221 void prepare_for_verify(); | |
4073
53074c2c4600
7099849: G1: include heap region information in hs_err files
tonyp
parents:
3774
diff
changeset
|
222 virtual void print_on(outputStream* st) const; |
9076
7b835924c31c
8011872: Include Bit Map addresses in the hs_err files
stefank
parents:
6725
diff
changeset
|
223 virtual void print_on_error(outputStream* st) const; |
0 | 224 virtual void print_gc_threads_on(outputStream* st) const; |
225 virtual void gc_threads_do(ThreadClosure* tc) const; | |
226 virtual void print_tracing_info() const; | |
227 | |
6008 | 228 void verify(bool silent, VerifyOption option /* ignored */); |
0 | 229 |
230 void print_heap_change(size_t prev_used); | |
231 | |
232 // Resize the young generation. The reserved space for the | |
233 // generation may be expanded in preparation for the resize. | |
234 void resize_young_gen(size_t eden_size, size_t survivor_size); | |
235 | |
236 // Resize the old generation. The reserved space for the | |
237 // generation may be expanded in preparation for the resize. | |
238 void resize_old_gen(size_t desired_free_space); | |
263
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
141
diff
changeset
|
239 |
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
141
diff
changeset
|
240 // Save the tops of the spaces in all generations |
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
141
diff
changeset
|
241 void record_gen_tops_before_GC() PRODUCT_RETURN; |
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
141
diff
changeset
|
242 |
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
141
diff
changeset
|
243 // Mangle the unused parts of all spaces in the heap |
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
141
diff
changeset
|
244 void gen_mangle_unused_area() PRODUCT_RETURN; |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
845
diff
changeset
|
245 |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
845
diff
changeset
|
246 // Call these in sequential code around the processing of strong roots. |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
845
diff
changeset
|
247 class ParStrongRootsScope : public MarkingCodeBlobClosure::MarkScope { |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
845
diff
changeset
|
248 public: |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
845
diff
changeset
|
249 ParStrongRootsScope(); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
845
diff
changeset
|
250 ~ParStrongRootsScope(); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
845
diff
changeset
|
251 }; |
0 | 252 }; |
253 | |
254 inline size_t ParallelScavengeHeap::set_alignment(size_t& var, size_t val) | |
255 { | |
256 assert(is_power_of_2((intptr_t)val), "must be a power of 2"); | |
13
183f41cf8bfe
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
0
diff
changeset
|
257 var = round_to(val, intra_heap_alignment()); |
0 | 258 return var; |
259 } | |
1972 | 260 |
261 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PARALLELSCAVENGEHEAP_HPP |