Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/shared/hSpaceCounters.hpp @ 8733:9def4075da6d
8008079: G1: Add nextObject routine to CMBitMapRO and replace nextWord
Summary: Update the task local finger to the start of the next object when marking aborts, in order to avoid the redundant scanning of all 0's when the marking task restarts, if otherwise updating to the next word. In addition, reuse the routine nextObject() in routine iterate().
Reviewed-by: johnc, ysr
Contributed-by: tamao <tao.mao@oracle.com>
| author | tamao |
|---|---|
| date | Tue, 05 Mar 2013 15:36:56 -0800 |
| parents | db9981fd3124 |
| children | de88570fabfc |
| rev | line source |
|---|---|
| 3289 | 1 /* |
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6842
b9a9ed0f8eeb
7197424: update copyright year to match last edit in jdk8 hotspot repository
mikael
parents:
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changeset
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2 * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved. |
| 3289 | 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 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #ifndef SHARE_VM_GC_IMPLEMENTATION_SHARED_HSPACECOUNTERS_HPP | |
| 26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_HSPACECOUNTERS_HPP | |
| 27 | |
|
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
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6842
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28 #include "utilities/macros.hpp" |
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db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
6842
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changeset
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29 #if INCLUDE_ALL_GCS |
| 3289 | 30 #include "gc_implementation/shared/generationCounters.hpp" |
| 31 #include "memory/generation.hpp" | |
| 32 #include "runtime/perfData.hpp" | |
|
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
6842
diff
changeset
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33 #endif // INCLUDE_ALL_GCS |
| 3289 | 34 |
| 35 // A HSpaceCounter is a holder class for performance counters | |
| 36 // that track a collections (logical spaces) in a heap; | |
| 37 | |
| 38 class HeapSpaceUsedHelper; | |
| 39 class G1SpaceMonitoringSupport; | |
| 40 | |
| 6197 | 41 class HSpaceCounters: public CHeapObj<mtGC> { |
| 3289 | 42 friend class VMStructs; |
| 43 | |
| 44 private: | |
| 45 PerfVariable* _capacity; | |
| 46 PerfVariable* _used; | |
| 47 | |
| 48 // Constant PerfData types don't need to retain a reference. | |
| 49 // However, it's a good idea to document them here. | |
| 50 | |
| 51 char* _name_space; | |
| 52 | |
| 53 public: | |
| 54 | |
| 55 HSpaceCounters(const char* name, int ordinal, size_t max_size, | |
| 56 size_t initial_capacity, GenerationCounters* gc); | |
| 57 | |
| 58 ~HSpaceCounters() { | |
| 6197 | 59 if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space, mtGC); |
| 3289 | 60 } |
| 61 | |
| 62 inline void update_capacity(size_t v) { | |
| 63 _capacity->set_value(v); | |
| 64 } | |
| 65 | |
| 66 inline void update_used(size_t v) { | |
| 67 _used->set_value(v); | |
| 68 } | |
| 69 | |
| 70 debug_only( | |
| 71 // for security reasons, we do not allow arbitrary reads from | |
| 72 // the counters as they may live in shared memory. | |
| 73 jlong used() { | |
| 74 return _used->get_value(); | |
| 75 } | |
| 76 jlong capacity() { | |
| 77 return _used->get_value(); | |
| 78 } | |
| 79 ) | |
| 80 | |
| 81 inline void update_all(size_t capacity, size_t used) { | |
| 82 update_capacity(capacity); | |
| 83 update_used(used); | |
| 84 } | |
| 85 | |
| 86 const char* name_space() const { return _name_space; } | |
| 87 }; | |
| 88 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_HSPACECOUNTERS_HPP |