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_PARALLEL_SPACECOUNTERS_HPP 26 #define SHARE_VM_GC_PARALLEL_SPACECOUNTERS_HPP 27 28 #include "gc/parallel/immutableSpace.hpp" 29 #include "gc/parallel/mutableSpace.hpp" 30 #include "gc/shared/generationCounters.hpp" 31 #include "runtime/perfData.hpp" 32 #include "utilities/macros.hpp" 33 34 // A SpaceCounter is a holder class for performance counters 35 // that track a space; 36 37 class SpaceCounters: public CHeapObj<mtGC> { 38 friend class VMStructs; 39 40 private: 41 PerfVariable* _capacity; 42 PerfVariable* _used; 43 44 // Constant PerfData types don't need to retain a reference. 45 // However, it's a good idea to document them here. 46 // PerfConstant* _size; 47 48 MutableSpace* _object_space; 49 char* _name_space; 50 51 public: 52 53 SpaceCounters(const char* name, int ordinal, size_t max_size, 54 MutableSpace* m, GenerationCounters* gc); 55 56 ~SpaceCounters() { 57 if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space); 58 } 59 60 inline void update_capacity() { 61 _capacity->set_value(_object_space->capacity_in_bytes()); 62 } 63 64 inline void update_used() { 65 _used->set_value(_object_space->used_in_bytes()); 66 } 67 68 inline void update_all() { 69 update_used(); 70 update_capacity(); 71 } 72 73 const char* name_space() const { return _name_space; } 74 }; 75 76 class MutableSpaceUsedHelper: public PerfLongSampleHelper { 77 private: 78 MutableSpace* _m; 79 80 public: 81 MutableSpaceUsedHelper(MutableSpace* m) : _m(m) { } 82 83 inline jlong take_sample() { 84 return _m->used_in_bytes(); 85 } 86 }; 87 88 #endif // SHARE_VM_GC_PARALLEL_SPACECOUNTERS_HPP