Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/shared/vmGCOperations.hpp @ 2174:234761c55641
6608385: G1: need to support parallel reference processing
Summary: Implement support for ParallelRefProcEnabled in the reference processing that takes place at the end of G1 concurrent marking.
Reviewed-by: tonyp, ysr
author | johnc |
---|---|
date | Tue, 25 Jan 2011 10:56:22 -0800 |
parents | 7246a374a9f2 |
children | c798c277ddd1 |
rev | line source |
---|---|
0 | 1 /* |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1387
diff
changeset
|
2 * Copyright (c) 2005, 2010, 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_SHARED_VMGCOPERATIONS_HPP |
26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_VMGCOPERATIONS_HPP | |
27 | |
28 #include "memory/heapInspection.hpp" | |
29 #include "runtime/handles.hpp" | |
30 #include "runtime/jniHandles.hpp" | |
31 #include "runtime/synchronizer.hpp" | |
32 #include "runtime/vm_operations.hpp" | |
2125
7246a374a9f2
6458402: 3 jvmti tests fail with CMS and +ExplicitGCInvokesConcurrent
kamg
parents:
2039
diff
changeset
|
33 #include "prims/jvmtiExport.hpp" |
1972 | 34 |
0 | 35 // The following class hierarchy represents |
36 // a set of operations (VM_Operation) related to GC. | |
37 // | |
38 // VM_Operation | |
39 // VM_GC_Operation | |
40 // VM_GC_HeapInspection | |
41 // VM_GenCollectForAllocation | |
42 // VM_GenCollectFull | |
43 // VM_GenCollectFullConcurrent | |
44 // VM_ParallelGCFailedAllocation | |
45 // VM_ParallelGCFailedPermanentAllocation | |
46 // VM_ParallelGCSystemGC | |
47 // VM_GC_Operation | |
48 // - implements methods common to all classes in the hierarchy: | |
49 // prevents multiple gc requests and manages lock on heap; | |
50 // | |
51 // VM_GC_HeapInspection | |
52 // - prints class histogram on SIGBREAK if PrintClassHistogram | |
53 // is specified; and also the attach "inspectheap" operation | |
54 // | |
55 // VM_GenCollectForAllocation | |
139
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
|
56 // VM_GenCollectForPermanentAllocation |
0 | 57 // VM_ParallelGCFailedAllocation |
58 // VM_ParallelGCFailedPermanentAllocation | |
59 // - this operation is invoked when allocation is failed; | |
60 // operation performs garbage collection and tries to | |
61 // allocate afterwards; | |
62 // | |
63 // VM_GenCollectFull | |
64 // VM_GenCollectFullConcurrent | |
65 // VM_ParallelGCSystemGC | |
66 // - these operations preform full collection of heaps of | |
67 // different kind | |
68 // | |
69 | |
70 class VM_GC_Operation: public VM_Operation { | |
71 protected: | |
72 BasicLock _pending_list_basic_lock; // for refs pending list notification (PLL) | |
73 unsigned int _gc_count_before; // gc count before acquiring PLL | |
74 unsigned int _full_gc_count_before; // full gc count before acquiring PLL | |
75 bool _full; // whether a "full" collection | |
76 bool _prologue_succeeded; // whether doit_prologue succeeded | |
77 GCCause::Cause _gc_cause; // the putative cause for this gc op | |
78 bool _gc_locked; // will be set if gc was locked | |
79 | |
80 virtual bool skip_operation() const; | |
81 | |
82 // java.lang.ref.Reference support | |
83 void acquire_pending_list_lock(); | |
84 void release_and_notify_pending_list_lock(); | |
85 | |
86 public: | |
87 VM_GC_Operation(unsigned int gc_count_before, | |
88 unsigned int full_gc_count_before = 0, | |
89 bool full = false) { | |
90 _full = full; | |
91 _prologue_succeeded = false; | |
92 _gc_count_before = gc_count_before; | |
93 | |
94 // A subclass constructor will likely overwrite the following | |
95 _gc_cause = GCCause::_no_cause_specified; | |
96 | |
97 _gc_locked = false; | |
98 | |
1656
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1552
diff
changeset
|
99 _full_gc_count_before = full_gc_count_before; |
1387
0bfd3fb24150
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
615
diff
changeset
|
100 // In ParallelScavengeHeap::mem_allocate() collections can be |
0bfd3fb24150
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
615
diff
changeset
|
101 // executed within a loop and _all_soft_refs_clear can be set |
0bfd3fb24150
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
615
diff
changeset
|
102 // true after they have been cleared by a collection and another |
0bfd3fb24150
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
615
diff
changeset
|
103 // collection started so that _all_soft_refs_clear can be true |
0bfd3fb24150
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
615
diff
changeset
|
104 // when this collection is started. Don't assert that |
0bfd3fb24150
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
615
diff
changeset
|
105 // _all_soft_refs_clear have to be false here even though |
0bfd3fb24150
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
615
diff
changeset
|
106 // mutators have run. Soft refs will be cleared again in this |
0bfd3fb24150
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
615
diff
changeset
|
107 // collection. |
0 | 108 } |
1387
0bfd3fb24150
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
615
diff
changeset
|
109 ~VM_GC_Operation() { |
0bfd3fb24150
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
615
diff
changeset
|
110 CollectedHeap* ch = Universe::heap(); |
0bfd3fb24150
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
615
diff
changeset
|
111 ch->collector_policy()->set_all_soft_refs_clear(false); |
0bfd3fb24150
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
615
diff
changeset
|
112 } |
0 | 113 |
114 // Acquire the reference synchronization lock | |
115 virtual bool doit_prologue(); | |
116 // Do notifyAll (if needed) and release held lock | |
117 virtual void doit_epilogue(); | |
118 | |
119 virtual bool allow_nested_vm_operations() const { return true; } | |
120 bool prologue_succeeded() const { return _prologue_succeeded; } | |
121 | |
122 void set_gc_locked() { _gc_locked = true; } | |
123 bool gc_locked() const { return _gc_locked; } | |
124 | |
125 static void notify_gc_begin(bool full = false); | |
126 static void notify_gc_end(); | |
127 }; | |
128 | |
129 | |
130 class VM_GC_HeapInspection: public VM_GC_Operation { | |
131 private: | |
132 outputStream* _out; | |
133 bool _full_gc; | |
615
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
196
diff
changeset
|
134 bool _need_prologue; |
0 | 135 public: |
615
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
196
diff
changeset
|
136 VM_GC_HeapInspection(outputStream* out, bool request_full_gc, |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
196
diff
changeset
|
137 bool need_prologue) : |
0 | 138 VM_GC_Operation(0 /* total collections, dummy, ignored */, |
139 0 /* total full collections, dummy, ignored */, | |
140 request_full_gc) { | |
141 _out = out; | |
142 _full_gc = request_full_gc; | |
615
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
196
diff
changeset
|
143 _need_prologue = need_prologue; |
0 | 144 } |
145 | |
146 ~VM_GC_HeapInspection() {} | |
147 virtual VMOp_Type type() const { return VMOp_GC_HeapInspection; } | |
148 virtual bool skip_operation() const; | |
149 virtual bool doit_prologue(); | |
150 virtual void doit(); | |
151 }; | |
152 | |
153 | |
154 class VM_GenCollectForAllocation: public VM_GC_Operation { | |
155 private: | |
156 HeapWord* _res; | |
157 size_t _size; // size of object to be allocated. | |
158 bool _tlab; // alloc is of a tlab. | |
159 public: | |
160 VM_GenCollectForAllocation(size_t size, | |
161 bool tlab, | |
162 unsigned int gc_count_before) | |
163 : VM_GC_Operation(gc_count_before), | |
164 _size(size), | |
165 _tlab(tlab) { | |
166 _res = NULL; | |
167 } | |
168 ~VM_GenCollectForAllocation() {} | |
169 virtual VMOp_Type type() const { return VMOp_GenCollectForAllocation; } | |
170 virtual void doit(); | |
171 HeapWord* result() const { return _res; } | |
172 }; | |
173 | |
174 | |
175 // VM operation to invoke a collection of the heap as a | |
176 // GenCollectedHeap heap. | |
177 class VM_GenCollectFull: public VM_GC_Operation { | |
178 private: | |
179 int _max_level; | |
180 public: | |
181 VM_GenCollectFull(unsigned int gc_count_before, | |
182 unsigned int full_gc_count_before, | |
183 GCCause::Cause gc_cause, | |
184 int max_level) | |
185 : VM_GC_Operation(gc_count_before, full_gc_count_before, true /* full */), | |
186 _max_level(max_level) | |
187 { _gc_cause = gc_cause; } | |
188 ~VM_GenCollectFull() {} | |
189 virtual VMOp_Type type() const { return VMOp_GenCollectFull; } | |
190 virtual void doit(); | |
191 }; | |
139
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
|
192 |
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
|
193 class VM_GenCollectForPermanentAllocation: public VM_GC_Operation { |
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
|
194 private: |
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
|
195 HeapWord* _res; |
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
|
196 size_t _size; // size of object to be allocated |
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
|
197 public: |
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
|
198 VM_GenCollectForPermanentAllocation(size_t size, |
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
|
199 unsigned int gc_count_before, |
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
|
200 unsigned int full_gc_count_before, |
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
|
201 GCCause::Cause gc_cause) |
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
|
202 : VM_GC_Operation(gc_count_before, full_gc_count_before, true), |
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
|
203 _size(size) { |
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
|
204 _res = NULL; |
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
|
205 _gc_cause = gc_cause; |
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
|
206 } |
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
|
207 ~VM_GenCollectForPermanentAllocation() {} |
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
|
208 virtual VMOp_Type type() const { return VMOp_GenCollectForPermanentAllocation; } |
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
|
209 virtual void doit(); |
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
|
210 HeapWord* result() const { return _res; } |
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
|
211 }; |
1972 | 212 |
2125
7246a374a9f2
6458402: 3 jvmti tests fail with CMS and +ExplicitGCInvokesConcurrent
kamg
parents:
2039
diff
changeset
|
213 class SvcGCMarker : public StackObj { |
7246a374a9f2
6458402: 3 jvmti tests fail with CMS and +ExplicitGCInvokesConcurrent
kamg
parents:
2039
diff
changeset
|
214 private: |
7246a374a9f2
6458402: 3 jvmti tests fail with CMS and +ExplicitGCInvokesConcurrent
kamg
parents:
2039
diff
changeset
|
215 JvmtiGCMarker _jgcm; |
7246a374a9f2
6458402: 3 jvmti tests fail with CMS and +ExplicitGCInvokesConcurrent
kamg
parents:
2039
diff
changeset
|
216 public: |
7246a374a9f2
6458402: 3 jvmti tests fail with CMS and +ExplicitGCInvokesConcurrent
kamg
parents:
2039
diff
changeset
|
217 typedef enum { MINOR, FULL, OTHER } reason_type; |
7246a374a9f2
6458402: 3 jvmti tests fail with CMS and +ExplicitGCInvokesConcurrent
kamg
parents:
2039
diff
changeset
|
218 |
7246a374a9f2
6458402: 3 jvmti tests fail with CMS and +ExplicitGCInvokesConcurrent
kamg
parents:
2039
diff
changeset
|
219 SvcGCMarker(reason_type reason ) { |
7246a374a9f2
6458402: 3 jvmti tests fail with CMS and +ExplicitGCInvokesConcurrent
kamg
parents:
2039
diff
changeset
|
220 VM_GC_Operation::notify_gc_begin(reason == FULL); |
2039
7c5250dbd584
6896624: G1: hotspot:::gc and hotspot:::mem-pool-gc probes are not fired
tonyp
parents:
1972
diff
changeset
|
221 } |
7c5250dbd584
6896624: G1: hotspot:::gc and hotspot:::mem-pool-gc probes are not fired
tonyp
parents:
1972
diff
changeset
|
222 |
2125
7246a374a9f2
6458402: 3 jvmti tests fail with CMS and +ExplicitGCInvokesConcurrent
kamg
parents:
2039
diff
changeset
|
223 ~SvcGCMarker() { |
2039
7c5250dbd584
6896624: G1: hotspot:::gc and hotspot:::mem-pool-gc probes are not fired
tonyp
parents:
1972
diff
changeset
|
224 VM_GC_Operation::notify_gc_end(); |
7c5250dbd584
6896624: G1: hotspot:::gc and hotspot:::mem-pool-gc probes are not fired
tonyp
parents:
1972
diff
changeset
|
225 } |
7c5250dbd584
6896624: G1: hotspot:::gc and hotspot:::mem-pool-gc probes are not fired
tonyp
parents:
1972
diff
changeset
|
226 }; |
7c5250dbd584
6896624: G1: hotspot:::gc and hotspot:::mem-pool-gc probes are not fired
tonyp
parents:
1972
diff
changeset
|
227 |
1972 | 228 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_VMGCOPERATIONS_HPP |