Wed, 27 Apr 2016 01:25:04 +0800
Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. |
aoqi@0 | 8 | * |
aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 13 | * accompanied this code). |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 21 | * questions. |
aoqi@0 | 22 | * |
aoqi@0 | 23 | */ |
aoqi@0 | 24 | |
aoqi@0 | 25 | #ifndef SHARE_VM_GC_IMPLEMENTATION_SHARED_GSPACECOUNTERS_HPP |
aoqi@0 | 26 | #define SHARE_VM_GC_IMPLEMENTATION_SHARED_GSPACECOUNTERS_HPP |
aoqi@0 | 27 | |
aoqi@0 | 28 | #include "utilities/macros.hpp" |
aoqi@0 | 29 | #if INCLUDE_ALL_GCS |
aoqi@0 | 30 | #include "gc_implementation/shared/generationCounters.hpp" |
aoqi@0 | 31 | #include "memory/generation.hpp" |
aoqi@0 | 32 | #include "runtime/perfData.hpp" |
aoqi@0 | 33 | #endif // INCLUDE_ALL_GCS |
aoqi@0 | 34 | |
aoqi@0 | 35 | // A GSpaceCounter is a holder class for performance counters |
aoqi@0 | 36 | // that track a space; |
aoqi@0 | 37 | |
aoqi@0 | 38 | class GSpaceCounters: public CHeapObj<mtGC> { |
aoqi@0 | 39 | friend class VMStructs; |
aoqi@0 | 40 | |
aoqi@0 | 41 | private: |
aoqi@0 | 42 | PerfVariable* _capacity; |
aoqi@0 | 43 | PerfVariable* _used; |
aoqi@0 | 44 | |
aoqi@0 | 45 | // Constant PerfData types don't need to retain a reference. |
aoqi@0 | 46 | // However, it's a good idea to document them here. |
aoqi@0 | 47 | // PerfConstant* _size; |
aoqi@0 | 48 | |
aoqi@0 | 49 | Generation* _gen; |
aoqi@0 | 50 | char* _name_space; |
aoqi@0 | 51 | |
aoqi@0 | 52 | public: |
aoqi@0 | 53 | |
aoqi@0 | 54 | GSpaceCounters(const char* name, int ordinal, size_t max_size, Generation* g, |
aoqi@0 | 55 | GenerationCounters* gc, bool sampled=true); |
aoqi@0 | 56 | |
aoqi@0 | 57 | ~GSpaceCounters() { |
aoqi@0 | 58 | if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space, mtGC); |
aoqi@0 | 59 | } |
aoqi@0 | 60 | |
aoqi@0 | 61 | inline void update_capacity() { |
aoqi@0 | 62 | _capacity->set_value(_gen->capacity()); |
aoqi@0 | 63 | } |
aoqi@0 | 64 | |
aoqi@0 | 65 | inline void update_used() { |
aoqi@0 | 66 | _used->set_value(_gen->used()); |
aoqi@0 | 67 | } |
aoqi@0 | 68 | |
aoqi@0 | 69 | // special version of update_used() to allow the used value to be |
aoqi@0 | 70 | // passed as a parameter. This method can can be used in cases were |
aoqi@0 | 71 | // the utilization is already known and/or when the _gen->used() |
aoqi@0 | 72 | // method is known to be expensive and we want to avoid unnecessary |
aoqi@0 | 73 | // calls to it. |
aoqi@0 | 74 | // |
aoqi@0 | 75 | inline void update_used(size_t used) { |
aoqi@0 | 76 | _used->set_value(used); |
aoqi@0 | 77 | } |
aoqi@0 | 78 | |
aoqi@0 | 79 | inline void inc_used(size_t size) { |
aoqi@0 | 80 | _used->inc(size); |
aoqi@0 | 81 | } |
aoqi@0 | 82 | |
aoqi@0 | 83 | debug_only( |
aoqi@0 | 84 | // for security reasons, we do not allow arbitrary reads from |
aoqi@0 | 85 | // the counters as they may live in shared memory. |
aoqi@0 | 86 | jlong used() { |
aoqi@0 | 87 | return _used->get_value(); |
aoqi@0 | 88 | } |
aoqi@0 | 89 | jlong capacity() { |
aoqi@0 | 90 | return _used->get_value(); |
aoqi@0 | 91 | } |
aoqi@0 | 92 | ) |
aoqi@0 | 93 | |
aoqi@0 | 94 | inline void update_all() { |
aoqi@0 | 95 | update_used(); |
aoqi@0 | 96 | update_capacity(); |
aoqi@0 | 97 | } |
aoqi@0 | 98 | |
aoqi@0 | 99 | const char* name_space() const { return _name_space; } |
aoqi@0 | 100 | }; |
aoqi@0 | 101 | |
aoqi@0 | 102 | class GenerationUsedHelper : public PerfLongSampleHelper { |
aoqi@0 | 103 | private: |
aoqi@0 | 104 | Generation* _gen; |
aoqi@0 | 105 | |
aoqi@0 | 106 | public: |
aoqi@0 | 107 | GenerationUsedHelper(Generation* g) : _gen(g) { } |
aoqi@0 | 108 | |
aoqi@0 | 109 | inline jlong take_sample() { |
aoqi@0 | 110 | return _gen->used(); |
aoqi@0 | 111 | } |
aoqi@0 | 112 | }; |
aoqi@0 | 113 | |
aoqi@0 | 114 | #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GSPACECOUNTERS_HPP |