1 /* 2 * Copyright (c) 2002, 2015, 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_SHARED_CSPACECOUNTERS_HPP 26 #define SHARE_VM_GC_SHARED_CSPACECOUNTERS_HPP 27 28 #include "gc/shared/generationCounters.hpp" 29 #include "gc/shared/space.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<mtGC> { 36 friend class VMStructs; 37 38 private: 39 PerfVariable* _capacity; 40 PerfVariable* _used; 41 PerfVariable* _max_capacity; 42 43 // Constant PerfData types don't need to retain a reference. 44 // However, it's a good idea to document them here. 45 // PerfConstant* _size; 46 47 ContiguousSpace* _space; 48 char* _name_space; 49 50 public: 51 52 CSpaceCounters(const char* name, int ordinal, size_t max_size, 53 ContiguousSpace* s, GenerationCounters* gc); 54 55 ~CSpaceCounters() { 56 if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space); 57 } 58 59 virtual void update_capacity(); 60 virtual void update_used(); 61 virtual void update_all(); 62 63 const char* name_space() const { return _name_space; } 64 }; 65 66 class ContiguousSpaceUsedHelper : public PerfLongSampleHelper { 67 private: 68 ContiguousSpace* _space; 69 70 public: 71 ContiguousSpaceUsedHelper(ContiguousSpace* space) : _space(space) { } 72 73 jlong take_sample(); 74 }; 75 76 #endif // SHARE_VM_GC_SHARED_CSPACECOUNTERS_HPP