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_SPACECOUNTERS_HPP 26 #define SHARE_VM_GC_SHARED_SPACECOUNTERS_HPP 27 28 #include "utilities/macros.hpp" 29 #if INCLUDE_ALL_GCS 30 #include "gc/shared/generationCounters.hpp" 31 #include "gc/shared/immutableSpace.hpp" 32 #include "gc/shared/mutableSpace.hpp" 33 #include "runtime/perfData.hpp" 34 #endif // INCLUDE_ALL_GCS 35 36 // A SpaceCounter is a holder class for performance counters 37 // that track a space; 38 39 class SpaceCounters: public CHeapObj<mtGC> { 40 friend class VMStructs; 41 42 private: 43 PerfVariable* _capacity; 44 PerfVariable* _used; 45 46 // Constant PerfData types don't need to retain a reference. 47 // However, it's a good idea to document them here. 48 // PerfConstant* _size; 49 50 MutableSpace* _object_space; 51 char* _name_space; 52 53 public: 54 55 SpaceCounters(const char* name, int ordinal, size_t max_size, 56 MutableSpace* m, GenerationCounters* gc); 57 58 ~SpaceCounters() { 59 if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space); 60 } 61 62 inline void update_capacity() { 63 _capacity->set_value(_object_space->capacity_in_bytes()); 64 } 65 66 inline void update_used() { 67 _used->set_value(_object_space->used_in_bytes()); 68 } 69 70 inline void update_all() { 71 update_used(); 72 update_capacity(); 73 } 74 75 const char* name_space() const { return _name_space; } 76 }; 77 78 class MutableSpaceUsedHelper: public PerfLongSampleHelper { 79 private: 80 MutableSpace* _m; 81 82 public: 83 MutableSpaceUsedHelper(MutableSpace* m) : _m(m) { } 84 85 inline jlong take_sample() { 86 return _m->used_in_bytes(); 87 } 88 }; 89 90 #endif // SHARE_VM_GC_SHARED_SPACECOUNTERS_HPP