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 GenerationCounter is a holder class for performance counters 26 // that track a generation 27 28 class GenerationCounters: public CHeapObj { 29 friend class VMStructs; 30 31 protected: 32 PerfVariable* _current_size; 33 VirtualSpace* _virtual_space; 34 35 // Constant PerfData types don't need to retain a reference. 36 // However, it's a good idea to document them here. 37 // PerfStringConstant* _name; 38 // PerfConstant* _min_size; 39 // PerfConstant* _max_size; 40 // PerfConstant* _spaces; 41 42 char* _name_space; 43 44 // This constructor is only meant for use with the PSGenerationCounters 45 // constructor. The need for such an constructor should be eliminated 46 // when VirtualSpace and PSVirtualSpace are unified. 47 GenerationCounters() : _name_space(NULL), _current_size(NULL), _virtual_space(NULL) {} 48 public: 49 50 GenerationCounters(const char* name, int ordinal, int spaces, 51 VirtualSpace* v); 52 53 ~GenerationCounters() { 54 if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space); 55 } 56 57 virtual void update_all() { 58 _current_size->set_value(_virtual_space->committed_size()); 59 } 60 61 const char* name_space() const { return _name_space; } 62 };