1 /* 2 * Copyright (c) 2002, 2010, 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_CSPACECOUNTERS_HPP 26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_CSPACECOUNTERS_HPP 27 28 #include "gc_implementation/shared/generationCounters.hpp" 29 #include "memory/space.inline.hpp" 30 #include "runtime/perfData.hpp" 31 32 // A CSpaceCounters is a holder class for performance counters 33 // that track a space; 34 35 class CSpaceCounters: public CHeapObj { 36 friend class VMStructs; 37 38 private: 39 PerfVariable* _capacity; 40 PerfVariable* _used; 41 42 // Constant PerfData types don't need to retain a reference. 43 // However, it's a good idea to document them here. 44 // PerfConstant* _size; 45 46 ContiguousSpace* _space; 47 char* _name_space; 48 49 public: 50 51 CSpaceCounters(const char* name, int ordinal, size_t max_size, 52 ContiguousSpace* s, GenerationCounters* gc); 53 54 ~CSpaceCounters() { 55 if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space); 56 } 57 58 inline void update_capacity() { 59 _capacity->set_value(_space->capacity()); 60 } 61 62 inline void update_used() { 63 _used->set_value(_space->used()); 64 } 65 66 inline void update_all() { 67 update_used(); 68 update_capacity(); 69 } 70 71 const char* name_space() const { return _name_space; } 72 }; 73 74 class ContiguousSpaceUsedHelper : public PerfLongSampleHelper { 75 private: 76 ContiguousSpace* _space; 77 78 public: 79 ContiguousSpaceUsedHelper(ContiguousSpace* space) : _space(space) { } 80 81 inline jlong take_sample() { 82 return _space->used(); 83 } 84 }; 85 86 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_CSPACECOUNTERS_HPP