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1 /*
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2 * Copyright 2002-2004 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 // A GenerationCounter is a holder class for performance counters
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26 // that track a generation
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27
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28 class GenerationCounters: public CHeapObj {
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29 friend class VMStructs;
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30
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31 protected:
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32 PerfVariable* _current_size;
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33 VirtualSpace* _virtual_space;
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34
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35 // Constant PerfData types don't need to retain a reference.
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36 // However, it's a good idea to document them here.
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37 // PerfStringConstant* _name;
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38 // PerfConstant* _min_size;
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39 // PerfConstant* _max_size;
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40 // PerfConstant* _spaces;
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41
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42 char* _name_space;
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43
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44 // This constructor is only meant for use with the PSGenerationCounters
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45 // constructor. The need for such an constructor should be eliminated
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46 // when VirtualSpace and PSVirtualSpace are unified.
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47 GenerationCounters() : _name_space(NULL), _current_size(NULL), _virtual_space(NULL) {}
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48 public:
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49
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50 GenerationCounters(const char* name, int ordinal, int spaces,
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51 VirtualSpace* v);
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52
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53 ~GenerationCounters() {
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54 if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space);
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55 }
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56
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57 virtual void update_all() {
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58 _current_size->set_value(_virtual_space->committed_size());
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59 }
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60
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61 const char* name_space() const { return _name_space; }
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62 };
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