1 /* 2 * Copyright (c) 2002, 2005, 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 // GCPolicyCounters is a holder class for performance counters 26 // that track a generation 27 28 class GCPolicyCounters: public CHeapObj { 29 friend class VMStructs; 30 31 private: 32 33 // Constant PerfData types don't need to retain a reference. 34 // However, it's a good idea to document them here. 35 // PerfStringConstant* _name; 36 // PerfStringConstant* _collector_size; 37 // PerfStringConstant* _generation_size; 38 39 PerfVariable* _tenuring_threshold; 40 PerfVariable* _desired_survivor_size; 41 42 const char* _name_space; 43 44 public: 45 46 enum Name { 47 NONE, 48 GCPolicyCountersKind, 49 GCAdaptivePolicyCountersKind, 50 PSGCAdaptivePolicyCountersKind, 51 CMSGCAdaptivePolicyCountersKind 52 }; 53 54 GCPolicyCounters(const char* name, int collectors, int generations); 55 56 inline PerfVariable* tenuring_threshold() const { 57 return _tenuring_threshold; 58 } 59 60 inline PerfVariable* desired_survivor_size() const { 61 return _desired_survivor_size; 62 } 63 64 const char* name_space() const { return _name_space; } 65 66 virtual void update_counters() {} 67 68 virtual GCPolicyCounters::Name kind() const { 69 return GCPolicyCounters::GCPolicyCountersKind; 70 } 71 };