Mercurial > hg > truffle
annotate src/share/vm/memory/specialized_oop_closures.hpp @ 5274:e72dd6533eb9
documented importance of nmethod::_graal_compiled_method wrt code unloading and GC
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 23 Apr 2012 15:42:30 +0200 |
parents | f95d63e2154a |
children | da91efe96a93 |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 2001, 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 * | |
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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_MEMORY_SPECIALIZED_OOP_CLOSURES_HPP |
26 #define SHARE_VM_MEMORY_SPECIALIZED_OOP_CLOSURES_HPP | |
27 | |
28 #include "runtime/atomic.hpp" | |
29 #ifndef SERIALGC | |
30 #include "gc_implementation/g1/g1_specialized_oop_closures.hpp" | |
31 #endif | |
32 | |
0 | 33 // The following OopClosure types get specialized versions of |
34 // "oop_oop_iterate" that invoke the closures' do_oop methods | |
35 // non-virtually, using a mechanism defined in this file. Extend these | |
36 // macros in the obvious way to add specializations for new closures. | |
37 | |
38 // Forward declarations. | |
39 class OopClosure; | |
40 class OopsInGenClosure; | |
41 // DefNew | |
42 class ScanClosure; | |
43 class FastScanClosure; | |
44 class FilteringClosure; | |
45 // ParNew | |
46 class ParScanWithBarrierClosure; | |
47 class ParScanWithoutBarrierClosure; | |
48 // CMS | |
49 class MarkRefsIntoAndScanClosure; | |
50 class Par_MarkRefsIntoAndScanClosure; | |
51 class PushAndMarkClosure; | |
52 class Par_PushAndMarkClosure; | |
53 class PushOrMarkClosure; | |
54 class Par_PushOrMarkClosure; | |
55 class CMSKeepAliveClosure; | |
56 class CMSInnerParMarkAndPushClosure; | |
57 | |
58 // This macro applies an argument macro to all OopClosures for which we | |
59 // want specialized bodies of "oop_oop_iterate". The arguments to "f" are: | |
60 // "f(closureType, non_virtual)" | |
61 // where "closureType" is the name of the particular subclass of OopClosure, | |
62 // and "non_virtual" will be the string "_nv" if the closure type should | |
63 // have its "do_oop" method invoked non-virtually, or else the | |
64 // string "_v". ("OopClosure" itself will be the only class in the latter | |
65 // category.) | |
66 | |
67 // This is split into several because of a Visual C++ 6.0 compiler bug | |
68 // where very long macros cause the compiler to crash | |
69 | |
342 | 70 // Some other heap might define further specialized closures. |
71 #ifndef FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES | |
72 #define FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES(f) \ | |
73 /* None */ | |
74 #endif | |
75 | |
0 | 76 #define SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_S(f) \ |
77 f(ScanClosure,_nv) \ | |
78 f(FastScanClosure,_nv) \ | |
79 f(FilteringClosure,_nv) | |
80 | |
81 #ifndef SERIALGC | |
82 #define SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_P(f) \ | |
83 f(ParScanWithBarrierClosure,_nv) \ | |
84 f(ParScanWithoutBarrierClosure,_nv) | |
85 #else // SERIALGC | |
86 #define SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_P(f) | |
87 #endif // SERIALGC | |
88 | |
89 #define SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_1(f) \ | |
90 SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_S(f) \ | |
91 SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_P(f) | |
92 | |
93 #ifndef SERIALGC | |
342 | 94 #define SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_2(f) \ |
0 | 95 f(MarkRefsIntoAndScanClosure,_nv) \ |
96 f(Par_MarkRefsIntoAndScanClosure,_nv) \ | |
97 f(PushAndMarkClosure,_nv) \ | |
98 f(Par_PushAndMarkClosure,_nv) \ | |
99 f(PushOrMarkClosure,_nv) \ | |
100 f(Par_PushOrMarkClosure,_nv) \ | |
101 f(CMSKeepAliveClosure,_nv) \ | |
342 | 102 f(CMSInnerParMarkAndPushClosure,_nv) \ |
103 FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES(f) | |
0 | 104 #else // SERIALGC |
342 | 105 #define SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_2(f) |
0 | 106 #endif // SERIALGC |
107 | |
342 | 108 |
0 | 109 // We separate these out, because sometime the general one has |
110 // a different definition from the specialized ones, and sometimes it | |
111 // doesn't. | |
112 | |
113 #define ALL_OOP_OOP_ITERATE_CLOSURES_1(f) \ | |
114 f(OopClosure,_v) \ | |
115 SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_1(f) | |
116 | |
342 | 117 #define ALL_OOP_OOP_ITERATE_CLOSURES_2(f) \ |
118 SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_2(f) | |
0 | 119 |
120 #ifndef SERIALGC | |
121 // This macro applies an argument macro to all OopClosures for which we | |
122 // want specialized bodies of a family of methods related to | |
123 // "par_oop_iterate". The arguments to f are the same as above. | |
124 // The "root_class" is the most general class to define; this may be | |
125 // "OopClosure" in some applications and "OopsInGenClosure" in others. | |
126 | |
127 #define SPECIALIZED_PAR_OOP_ITERATE_CLOSURES(f) \ | |
128 f(MarkRefsIntoAndScanClosure,_nv) \ | |
129 f(PushAndMarkClosure,_nv) \ | |
130 f(Par_MarkRefsIntoAndScanClosure,_nv) \ | |
131 f(Par_PushAndMarkClosure,_nv) | |
132 | |
133 #define ALL_PAR_OOP_ITERATE_CLOSURES(f) \ | |
134 f(OopClosure,_v) \ | |
135 SPECIALIZED_PAR_OOP_ITERATE_CLOSURES(f) | |
136 #endif // SERIALGC | |
137 | |
138 // This macro applies an argument macro to all OopClosures for which we | |
139 // want specialized bodies of a family of methods related to | |
140 // "oops_since_save_marks_do". The arguments to f are the same as above. | |
141 // The "root_class" is the most general class to define; this may be | |
142 // "OopClosure" in some applications and "OopsInGenClosure" in others. | |
143 | |
342 | 144 |
145 // Some other heap might define further specialized closures. | |
146 #ifndef FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES | |
147 #define FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES(f) \ | |
148 /* None */ | |
149 #endif | |
150 | |
0 | 151 #define SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES_YOUNG_S(f) \ |
152 f(ScanClosure,_nv) \ | |
153 f(FastScanClosure,_nv) | |
154 | |
155 #ifndef SERIALGC | |
156 #define SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES_YOUNG_P(f) \ | |
157 f(ParScanWithBarrierClosure,_nv) \ | |
342 | 158 f(ParScanWithoutBarrierClosure,_nv) \ |
159 FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES(f) | |
0 | 160 #else // SERIALGC |
161 #define SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES_YOUNG_P(f) | |
162 #endif // SERIALGC | |
163 | |
164 #define SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES_YOUNG(f) \ | |
165 SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES_YOUNG_S(f) \ | |
166 SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES_YOUNG_P(f) | |
167 | |
168 #define SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES(f) \ | |
169 SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES_YOUNG(f) | |
170 | |
171 // We separate these out, because sometime the general one has | |
172 // a different definition from the specialized ones, and sometimes it | |
173 // doesn't. | |
174 // NOTE: One of the valid criticisms of this | |
175 // specialize-oop_oop_iterate-for-specific-closures idiom is that it is | |
176 // easy to have a silent performance bug: if you fail to de-virtualize, | |
177 // things still work, just slower. The "SpecializationStats" mode is | |
178 // intended to at least make such a failure easy to detect. | |
179 // *Not* using the ALL_SINCE_SAVE_MARKS_CLOSURES(f) macro defined | |
180 // below means that *only* closures for which oop_oop_iterate specializations | |
181 // exist above may be applied to "oops_since_save_marks". That is, | |
182 // this form of the performance bug is caught statically. When you add | |
183 // a definition for the general type, this property goes away. | |
184 // Make sure you test with SpecializationStats to find such bugs | |
185 // when introducing a new closure where you don't want virtual dispatch. | |
186 | |
187 #define ALL_SINCE_SAVE_MARKS_CLOSURES(f) \ | |
188 f(OopsInGenClosure,_v) \ | |
189 SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES(f) | |
190 | |
191 // For keeping stats on effectiveness. | |
192 #define ENABLE_SPECIALIZATION_STATS 0 | |
193 | |
194 | |
195 class SpecializationStats { | |
196 public: | |
197 enum Kind { | |
198 ik, // instanceKlass | |
199 irk, // instanceRefKlass | |
200 oa, // objArrayKlass | |
201 NUM_Kinds | |
202 }; | |
203 | |
204 #if ENABLE_SPECIALIZATION_STATS | |
205 private: | |
342 | 206 static bool _init; |
207 static bool _wrapped; | |
208 static jint _numCallsAll; | |
0 | 209 |
342 | 210 static jint _numCallsTotal[NUM_Kinds]; |
211 static jint _numCalls_nv[NUM_Kinds]; | |
0 | 212 |
342 | 213 static jint _numDoOopCallsTotal[NUM_Kinds]; |
214 static jint _numDoOopCalls_nv[NUM_Kinds]; | |
0 | 215 public: |
216 #endif | |
217 static void clear() PRODUCT_RETURN; | |
218 | |
219 static inline void record_call() PRODUCT_RETURN; | |
220 static inline void record_iterate_call_v(Kind k) PRODUCT_RETURN; | |
221 static inline void record_iterate_call_nv(Kind k) PRODUCT_RETURN; | |
222 static inline void record_do_oop_call_v(Kind k) PRODUCT_RETURN; | |
223 static inline void record_do_oop_call_nv(Kind k) PRODUCT_RETURN; | |
224 | |
225 static void print() PRODUCT_RETURN; | |
226 }; | |
227 | |
228 #ifndef PRODUCT | |
229 #if ENABLE_SPECIALIZATION_STATS | |
230 | |
231 inline void SpecializationStats::record_call() { | |
342 | 232 Atomic::inc(&_numCallsAll); |
0 | 233 } |
234 inline void SpecializationStats::record_iterate_call_v(Kind k) { | |
342 | 235 Atomic::inc(&_numCallsTotal[k]); |
0 | 236 } |
237 inline void SpecializationStats::record_iterate_call_nv(Kind k) { | |
342 | 238 Atomic::inc(&_numCallsTotal[k]); |
239 Atomic::inc(&_numCalls_nv[k]); | |
0 | 240 } |
241 | |
242 inline void SpecializationStats::record_do_oop_call_v(Kind k) { | |
342 | 243 Atomic::inc(&_numDoOopCallsTotal[k]); |
0 | 244 } |
245 inline void SpecializationStats::record_do_oop_call_nv(Kind k) { | |
342 | 246 Atomic::inc(&_numDoOopCallsTotal[k]); |
247 Atomic::inc(&_numDoOopCalls_nv[k]); | |
0 | 248 } |
249 | |
250 #else // !ENABLE_SPECIALIZATION_STATS | |
251 | |
252 inline void SpecializationStats::record_call() {} | |
253 inline void SpecializationStats::record_iterate_call_v(Kind k) {} | |
254 inline void SpecializationStats::record_iterate_call_nv(Kind k) {} | |
255 inline void SpecializationStats::record_do_oop_call_v(Kind k) {} | |
256 inline void SpecializationStats::record_do_oop_call_nv(Kind k) {} | |
257 inline void SpecializationStats::clear() {} | |
258 inline void SpecializationStats::print() {} | |
259 | |
260 #endif // ENABLE_SPECIALIZATION_STATS | |
261 #endif // !PRODUCT | |
1972 | 262 |
263 #endif // SHARE_VM_MEMORY_SPECIALIZED_OOP_CLOSURES_HPP |