Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/shared/vmGCOperations.hpp @ 13436:9fbabcbb875b
8028741: Interface Method Resolution should skip static and non-public methods in j.l.Object
Summary: Implementation of JDK 8 JVMS 5.4.3.4 specification change to skip static and non-public methods of java.lang.Object for interface method resolution.
Reviewed-by: acorn, coleenp
Contributed-by: lois.foltan@oracle.com
author | hseigel |
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date | Tue, 10 Dec 2013 16:18:26 -0500 |
parents | 85c1ca43713f |
children | 2c6ef90f030a |
rev | line source |
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0 | 1 /* |
7956 | 2 * Copyright (c) 2005, 2013, 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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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" | |
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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_ParallelGCSystemGC | |
46 // VM_GC_Operation | |
47 // - implements methods common to all classes in the hierarchy: | |
48 // prevents multiple gc requests and manages lock on heap; | |
49 // | |
50 // VM_GC_HeapInspection | |
51 // - prints class histogram on SIGBREAK if PrintClassHistogram | |
52 // is specified; and also the attach "inspectheap" operation | |
53 // | |
54 // VM_GenCollectForAllocation | |
55 // VM_ParallelGCFailedAllocation | |
56 // - this operation is invoked when allocation is failed; | |
57 // operation performs garbage collection and tries to | |
58 // allocate afterwards; | |
59 // | |
60 // VM_GenCollectFull | |
61 // VM_GenCollectFullConcurrent | |
62 // VM_ParallelGCSystemGC | |
63 // - these operations preform full collection of heaps of | |
64 // different kind | |
65 // | |
66 | |
67 class VM_GC_Operation: public VM_Operation { | |
68 protected: | |
69 BasicLock _pending_list_basic_lock; // for refs pending list notification (PLL) | |
70 unsigned int _gc_count_before; // gc count before acquiring PLL | |
71 unsigned int _full_gc_count_before; // full gc count before acquiring PLL | |
72 bool _full; // whether a "full" collection | |
73 bool _prologue_succeeded; // whether doit_prologue succeeded | |
74 GCCause::Cause _gc_cause; // the putative cause for this gc op | |
75 bool _gc_locked; // will be set if gc was locked | |
76 | |
77 virtual bool skip_operation() const; | |
78 | |
79 // java.lang.ref.Reference support | |
80 void acquire_pending_list_lock(); | |
81 void release_and_notify_pending_list_lock(); | |
82 | |
83 public: | |
84 VM_GC_Operation(unsigned int gc_count_before, | |
2225 | 85 GCCause::Cause _cause, |
0 | 86 unsigned int full_gc_count_before = 0, |
87 bool full = false) { | |
88 _full = full; | |
89 _prologue_succeeded = false; | |
90 _gc_count_before = gc_count_before; | |
91 | |
92 // A subclass constructor will likely overwrite the following | |
2225 | 93 _gc_cause = _cause; |
0 | 94 |
95 _gc_locked = false; | |
96 | |
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97 _full_gc_count_before = full_gc_count_before; |
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98 // In ParallelScavengeHeap::mem_allocate() collections can be |
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99 // executed within a loop and _all_soft_refs_clear can be set |
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100 // true after they have been cleared by a collection and another |
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101 // collection started so that _all_soft_refs_clear can be true |
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102 // when this collection is started. Don't assert that |
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103 // _all_soft_refs_clear have to be false here even though |
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104 // mutators have run. Soft refs will be cleared again in this |
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105 // collection. |
0 | 106 } |
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107 ~VM_GC_Operation() { |
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108 CollectedHeap* ch = Universe::heap(); |
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109 ch->collector_policy()->set_all_soft_refs_clear(false); |
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110 } |
0 | 111 |
112 // Acquire the reference synchronization lock | |
113 virtual bool doit_prologue(); | |
114 // Do notifyAll (if needed) and release held lock | |
115 virtual void doit_epilogue(); | |
116 | |
117 virtual bool allow_nested_vm_operations() const { return true; } | |
118 bool prologue_succeeded() const { return _prologue_succeeded; } | |
119 | |
120 void set_gc_locked() { _gc_locked = true; } | |
121 bool gc_locked() const { return _gc_locked; } | |
122 | |
123 static void notify_gc_begin(bool full = false); | |
124 static void notify_gc_end(); | |
125 }; | |
126 | |
127 | |
128 class VM_GC_HeapInspection: public VM_GC_Operation { | |
129 private: | |
130 outputStream* _out; | |
131 bool _full_gc; | |
7956 | 132 bool _csv_format; // "comma separated values" format for spreadsheet. |
133 bool _print_help; | |
134 bool _print_class_stats; | |
135 const char* _columns; | |
0 | 136 public: |
10405 | 137 VM_GC_HeapInspection(outputStream* out, bool request_full_gc) : |
0 | 138 VM_GC_Operation(0 /* total collections, dummy, ignored */, |
2225 | 139 GCCause::_heap_inspection /* GC Cause */, |
0 | 140 0 /* total full collections, dummy, ignored */, |
141 request_full_gc) { | |
142 _out = out; | |
143 _full_gc = request_full_gc; | |
7956 | 144 _csv_format = false; |
145 _print_help = false; | |
146 _print_class_stats = false; | |
147 _columns = NULL; | |
0 | 148 } |
149 | |
150 ~VM_GC_HeapInspection() {} | |
151 virtual VMOp_Type type() const { return VMOp_GC_HeapInspection; } | |
152 virtual bool skip_operation() const; | |
153 virtual bool doit_prologue(); | |
154 virtual void doit(); | |
7956 | 155 void set_csv_format(bool value) {_csv_format = value;} |
156 void set_print_help(bool value) {_print_help = value;} | |
157 void set_print_class_stats(bool value) {_print_class_stats = value;} | |
158 void set_columns(const char* value) {_columns = value;} | |
10405 | 159 protected: |
160 bool collect(); | |
0 | 161 }; |
162 | |
163 | |
164 class VM_GenCollectForAllocation: public VM_GC_Operation { | |
165 private: | |
166 HeapWord* _res; | |
167 size_t _size; // size of object to be allocated. | |
168 bool _tlab; // alloc is of a tlab. | |
169 public: | |
170 VM_GenCollectForAllocation(size_t size, | |
171 bool tlab, | |
172 unsigned int gc_count_before) | |
2225 | 173 : VM_GC_Operation(gc_count_before, GCCause::_allocation_failure), |
0 | 174 _size(size), |
175 _tlab(tlab) { | |
176 _res = NULL; | |
177 } | |
178 ~VM_GenCollectForAllocation() {} | |
179 virtual VMOp_Type type() const { return VMOp_GenCollectForAllocation; } | |
180 virtual void doit(); | |
181 HeapWord* result() const { return _res; } | |
182 }; | |
183 | |
184 | |
185 // VM operation to invoke a collection of the heap as a | |
186 // GenCollectedHeap heap. | |
187 class VM_GenCollectFull: public VM_GC_Operation { | |
188 private: | |
189 int _max_level; | |
190 public: | |
191 VM_GenCollectFull(unsigned int gc_count_before, | |
192 unsigned int full_gc_count_before, | |
193 GCCause::Cause gc_cause, | |
194 int max_level) | |
2225 | 195 : VM_GC_Operation(gc_count_before, gc_cause, full_gc_count_before, true /* full */), |
196 _max_level(max_level) { } | |
0 | 197 ~VM_GenCollectFull() {} |
198 virtual VMOp_Type type() const { return VMOp_GenCollectFull; } | |
199 virtual void doit(); | |
200 }; | |
139
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201 |
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202 class VM_CollectForMetadataAllocation: public VM_GC_Operation { |
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203 private: |
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204 MetaWord* _result; |
6885 | 205 size_t _size; // size of object to be allocated |
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206 Metaspace::MetadataType _mdtype; |
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207 ClassLoaderData* _loader_data; |
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208 public: |
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209 VM_CollectForMetadataAllocation(ClassLoaderData* loader_data, |
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210 size_t size, Metaspace::MetadataType mdtype, |
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211 unsigned int gc_count_before, |
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212 unsigned int full_gc_count_before, |
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213 GCCause::Cause gc_cause) |
2225 | 214 : VM_GC_Operation(gc_count_before, gc_cause, full_gc_count_before, true), |
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215 _loader_data(loader_data), _size(size), _mdtype(mdtype), _result(NULL) { |
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216 } |
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217 virtual VMOp_Type type() const { return VMOp_CollectForMetadataAllocation; } |
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218 virtual void doit(); |
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219 MetaWord* result() const { return _result; } |
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220 }; |
1972 | 221 |
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222 class SvcGCMarker : public StackObj { |
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223 private: |
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224 JvmtiGCMarker _jgcm; |
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225 public: |
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226 typedef enum { MINOR, FULL, OTHER } reason_type; |
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227 |
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228 SvcGCMarker(reason_type reason ) { |
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229 VM_GC_Operation::notify_gc_begin(reason == FULL); |
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230 } |
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231 |
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232 ~SvcGCMarker() { |
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233 VM_GC_Operation::notify_gc_end(); |
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234 } |
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235 }; |
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236 |
1972 | 237 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_VMGCOPERATIONS_HPP |