1 /* 2 * Copyright (c) 2002, 2004, 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 // A SpaceCounter is a holder class for performance counters 26 // that track a space; 27 28 class SpaceCounters: public CHeapObj { 29 friend class VMStructs; 30 31 private: 32 PerfVariable* _capacity; 33 PerfVariable* _used; 34 35 // Constant PerfData types don't need to retain a reference. 36 // However, it's a good idea to document them here. 37 // PerfConstant* _size; 38 39 MutableSpace* _object_space; 40 char* _name_space; 41 42 public: 43 44 SpaceCounters(const char* name, int ordinal, size_t max_size, 45 MutableSpace* m, GenerationCounters* gc); 46 47 ~SpaceCounters() { 48 if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space); 49 } 50 51 inline void update_capacity() { 52 _capacity->set_value(_object_space->capacity_in_bytes()); 53 } 54 55 inline void update_used() { 56 _used->set_value(_object_space->used_in_bytes()); 57 } 58 59 inline void update_all() { 60 update_used(); 61 update_capacity(); 62 } 63 64 const char* name_space() const { return _name_space; } 65 }; 66 67 class MutableSpaceUsedHelper: public PerfLongSampleHelper { 68 private: 69 MutableSpace* _m; 70 71 public: 72 MutableSpaceUsedHelper(MutableSpace* m) : _m(m) { } 73 74 inline jlong take_sample() { 75 return _m->used_in_bytes(); 76 } 77 };