Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/gc_implementation/shared/gSpaceCounters.hpp
src/share/vm/gc_implementation/shared/gSpaceCounters.hpp
- changeset 0
- f90c822e73f8
- child 6876
- 710a3c8b516e
equal
deleted
inserted
replaced
| -1:000000000000 | 0:f90c822e73f8 |
|---|---|
| 1 /* | |
| 2 * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved. | |
| 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_GSPACECOUNTERS_HPP | |
| 26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_GSPACECOUNTERS_HPP | |
| 27 | |
| 28 #include "utilities/macros.hpp" | |
| 29 #if INCLUDE_ALL_GCS | |
| 30 #include "gc_implementation/shared/generationCounters.hpp" | |
| 31 #include "memory/generation.hpp" | |
| 32 #include "runtime/perfData.hpp" | |
| 33 #endif // INCLUDE_ALL_GCS | |
| 34 | |
| 35 // A GSpaceCounter is a holder class for performance counters | |
| 36 // that track a space; | |
| 37 | |
| 38 class GSpaceCounters: public CHeapObj<mtGC> { | |
| 39 friend class VMStructs; | |
| 40 | |
| 41 private: | |
| 42 PerfVariable* _capacity; | |
| 43 PerfVariable* _used; | |
| 44 | |
| 45 // Constant PerfData types don't need to retain a reference. | |
| 46 // However, it's a good idea to document them here. | |
| 47 // PerfConstant* _size; | |
| 48 | |
| 49 Generation* _gen; | |
| 50 char* _name_space; | |
| 51 | |
| 52 public: | |
| 53 | |
| 54 GSpaceCounters(const char* name, int ordinal, size_t max_size, Generation* g, | |
| 55 GenerationCounters* gc, bool sampled=true); | |
| 56 | |
| 57 ~GSpaceCounters() { | |
| 58 if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space, mtGC); | |
| 59 } | |
| 60 | |
| 61 inline void update_capacity() { | |
| 62 _capacity->set_value(_gen->capacity()); | |
| 63 } | |
| 64 | |
| 65 inline void update_used() { | |
| 66 _used->set_value(_gen->used()); | |
| 67 } | |
| 68 | |
| 69 // special version of update_used() to allow the used value to be | |
| 70 // passed as a parameter. This method can can be used in cases were | |
| 71 // the utilization is already known and/or when the _gen->used() | |
| 72 // method is known to be expensive and we want to avoid unnecessary | |
| 73 // calls to it. | |
| 74 // | |
| 75 inline void update_used(size_t used) { | |
| 76 _used->set_value(used); | |
| 77 } | |
| 78 | |
| 79 inline void inc_used(size_t size) { | |
| 80 _used->inc(size); | |
| 81 } | |
| 82 | |
| 83 debug_only( | |
| 84 // for security reasons, we do not allow arbitrary reads from | |
| 85 // the counters as they may live in shared memory. | |
| 86 jlong used() { | |
| 87 return _used->get_value(); | |
| 88 } | |
| 89 jlong capacity() { | |
| 90 return _used->get_value(); | |
| 91 } | |
| 92 ) | |
| 93 | |
| 94 inline void update_all() { | |
| 95 update_used(); | |
| 96 update_capacity(); | |
| 97 } | |
| 98 | |
| 99 const char* name_space() const { return _name_space; } | |
| 100 }; | |
| 101 | |
| 102 class GenerationUsedHelper : public PerfLongSampleHelper { | |
| 103 private: | |
| 104 Generation* _gen; | |
| 105 | |
| 106 public: | |
| 107 GenerationUsedHelper(Generation* g) : _gen(g) { } | |
| 108 | |
| 109 inline jlong take_sample() { | |
| 110 return _gen->used(); | |
| 111 } | |
| 112 }; | |
| 113 | |
| 114 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GSPACECOUNTERS_HPP |
