Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/parNew/parOopClosures.hpp @ 10185:d50cc62e94ff
8012715: G1: GraphKit accesses PtrQueue::_index as int but is size_t
Summary: In graphKit INT operations were generated to access PtrQueue::_index which has type size_t. This is 64 bit on 64-bit machines. No problems occur on little endian machines as long as the index fits into 32 bit, but on big endian machines the upper part is read, which is zero. This leads to unnecessary branches to the slow path in the runtime.
Reviewed-by: twisti, johnc
Contributed-by: Martin Doerr <martin.doerr@sap.com>
author | johnc |
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date | Wed, 24 Apr 2013 14:48:43 -0700 |
parents | da91efe96a93 |
children | 9766f73e770d |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2007, 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 * | |
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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_PARNEW_PAROOPCLOSURES_HPP |
26 #define SHARE_VM_GC_IMPLEMENTATION_PARNEW_PAROOPCLOSURES_HPP | |
27 | |
28 #include "memory/genOopClosures.hpp" | |
29 | |
0 | 30 // Closures for ParNewGeneration |
31 | |
32 class ParScanThreadState; | |
33 class ParNewGeneration; | |
1665 | 34 typedef Padded<OopTaskQueue> ObjToScanQueue; |
6197 | 35 typedef GenericTaskQueueSet<ObjToScanQueue, mtGC> ObjToScanQueueSet; |
0 | 36 class ParallelTaskTerminator; |
37 | |
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38 class ParScanClosure: public OopsInKlassOrGenClosure { |
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39 protected: |
0 | 40 ParScanThreadState* _par_scan_state; |
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41 ParNewGeneration* _g; |
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42 HeapWord* _boundary; |
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43 template <class T> void inline par_do_barrier(T* p); |
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44 template <class T> void inline do_oop_work(T* p, |
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45 bool gc_barrier, |
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46 bool root_scan); |
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47 public: |
0 | 48 ParScanClosure(ParNewGeneration* g, ParScanThreadState* par_scan_state); |
49 }; | |
50 | |
51 class ParScanWithBarrierClosure: public ParScanClosure { | |
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52 public: |
0 | 53 ParScanWithBarrierClosure(ParNewGeneration* g, |
54 ParScanThreadState* par_scan_state) : | |
55 ParScanClosure(g, par_scan_state) {} | |
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56 virtual void do_oop(oop* p); |
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57 virtual void do_oop(narrowOop* p); |
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58 inline void do_oop_nv(oop* p); |
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59 inline void do_oop_nv(narrowOop* p); |
0 | 60 }; |
61 | |
62 class ParScanWithoutBarrierClosure: public ParScanClosure { | |
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63 public: |
0 | 64 ParScanWithoutBarrierClosure(ParNewGeneration* g, |
65 ParScanThreadState* par_scan_state) : | |
66 ParScanClosure(g, par_scan_state) {} | |
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67 virtual void do_oop(oop* p); |
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68 virtual void do_oop(narrowOop* p); |
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69 inline void do_oop_nv(oop* p); |
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70 inline void do_oop_nv(narrowOop* p); |
0 | 71 }; |
72 | |
73 class ParRootScanWithBarrierTwoGensClosure: public ParScanClosure { | |
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74 public: |
0 | 75 ParRootScanWithBarrierTwoGensClosure(ParNewGeneration* g, |
76 ParScanThreadState* par_scan_state) : | |
77 ParScanClosure(g, par_scan_state) {} | |
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78 virtual void do_oop(oop* p); |
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79 virtual void do_oop(narrowOop* p); |
0 | 80 }; |
81 | |
82 class ParRootScanWithoutBarrierClosure: public ParScanClosure { | |
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83 public: |
0 | 84 ParRootScanWithoutBarrierClosure(ParNewGeneration* g, |
85 ParScanThreadState* par_scan_state) : | |
86 ParScanClosure(g, par_scan_state) {} | |
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87 virtual void do_oop(oop* p); |
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88 virtual void do_oop(narrowOop* p); |
0 | 89 }; |
90 | |
91 class ParScanWeakRefClosure: public ScanWeakRefClosure { | |
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92 protected: |
0 | 93 ParScanThreadState* _par_scan_state; |
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94 template <class T> inline void do_oop_work(T* p); |
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95 public: |
0 | 96 ParScanWeakRefClosure(ParNewGeneration* g, |
97 ParScanThreadState* par_scan_state); | |
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98 virtual void do_oop(oop* p); |
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99 virtual void do_oop(narrowOop* p); |
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100 inline void do_oop_nv(oop* p); |
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101 inline void do_oop_nv(narrowOop* p); |
0 | 102 }; |
103 | |
104 class ParEvacuateFollowersClosure: public VoidClosure { | |
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105 private: |
0 | 106 ParScanThreadState* _par_scan_state; |
107 ParScanThreadState* par_scan_state() { return _par_scan_state; } | |
108 | |
109 // We want to preserve the specific types here (rather than "OopClosure") | |
110 // for later de-virtualization of do_oop calls. | |
111 ParScanWithoutBarrierClosure* _to_space_closure; | |
112 ParScanWithoutBarrierClosure* to_space_closure() { | |
113 return _to_space_closure; | |
114 } | |
115 ParRootScanWithoutBarrierClosure* _to_space_root_closure; | |
116 ParRootScanWithoutBarrierClosure* to_space_root_closure() { | |
117 return _to_space_root_closure; | |
118 } | |
119 | |
120 ParScanWithBarrierClosure* _old_gen_closure; | |
121 ParScanWithBarrierClosure* old_gen_closure () { | |
122 return _old_gen_closure; | |
123 } | |
124 ParRootScanWithBarrierTwoGensClosure* _old_gen_root_closure; | |
125 ParRootScanWithBarrierTwoGensClosure* old_gen_root_closure () { | |
126 return _old_gen_root_closure; | |
127 } | |
128 | |
129 ParNewGeneration* _par_gen; | |
130 ParNewGeneration* par_gen() { return _par_gen; } | |
131 | |
132 ObjToScanQueueSet* _task_queues; | |
133 ObjToScanQueueSet* task_queues() { return _task_queues; } | |
134 | |
135 ParallelTaskTerminator* _terminator; | |
136 ParallelTaskTerminator* terminator() { return _terminator; } | |
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137 public: |
0 | 138 ParEvacuateFollowersClosure( |
139 ParScanThreadState* par_scan_state_, | |
140 ParScanWithoutBarrierClosure* to_space_closure_, | |
141 ParScanWithBarrierClosure* old_gen_closure_, | |
142 ParRootScanWithoutBarrierClosure* to_space_root_closure_, | |
143 ParNewGeneration* par_gen_, | |
144 ParRootScanWithBarrierTwoGensClosure* old_gen_root_closure_, | |
145 ObjToScanQueueSet* task_queues_, | |
146 ParallelTaskTerminator* terminator_); | |
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147 virtual void do_void(); |
0 | 148 }; |
1972 | 149 |
150 #endif // SHARE_VM_GC_IMPLEMENTATION_PARNEW_PAROOPCLOSURES_HPP |