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1 /*
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2 * Copyright 2002-2005 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 // GCPolicyCounters 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 GCPolicyCounters: public CHeapObj {
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29 friend class VMStructs;
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30
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31 private:
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32
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33 // Constant PerfData types don't need to retain a reference.
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34 // However, it's a good idea to document them here.
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35 // PerfStringConstant* _name;
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36 // PerfStringConstant* _collector_size;
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37 // PerfStringConstant* _generation_size;
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38
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39 PerfVariable* _tenuring_threshold;
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40 PerfVariable* _desired_survivor_size;
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41
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42 const char* _name_space;
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43
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44 public:
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45
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46 enum Name {
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47 NONE,
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48 GCPolicyCountersKind,
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49 GCAdaptivePolicyCountersKind,
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50 PSGCAdaptivePolicyCountersKind,
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51 CMSGCAdaptivePolicyCountersKind
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52 };
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53
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54 GCPolicyCounters(const char* name, int collectors, int generations);
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55
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56 inline PerfVariable* tenuring_threshold() const {
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57 return _tenuring_threshold;
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58 }
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59
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60 inline PerfVariable* desired_survivor_size() const {
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61 return _desired_survivor_size;
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62 }
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63
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64 const char* name_space() const { return _name_space; }
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65
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66 virtual void update_counters() {}
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67
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68 virtual GCPolicyCounters::Name kind() const {
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69 return GCPolicyCounters::GCPolicyCountersKind;
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70 }
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71 };
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