1 /* 2 * Copyright (c) 2002, 2019, 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 #ifndef SHARE_GC_SHARED_GCPOLICYCOUNTERS_HPP 26 #define SHARE_GC_SHARED_GCPOLICYCOUNTERS_HPP 27 28 #include "runtime/perfData.hpp" 29 30 // GCPolicyCounters is a holder class for performance counters 31 // that track a generation 32 33 class GCPolicyCounters: public CHeapObj<mtGC> { 34 friend class VMStructs; 35 36 // Constant PerfData types don't need to retain a reference. 37 // However, it's a good idea to document them here. 38 // PerfStringConstant* _name; 39 // PerfStringConstant* _collector_size; 40 // PerfStringConstant* _generation_size; 41 42 PerfVariable* _tenuring_threshold; 43 PerfVariable* _desired_survivor_size; 44 PerfVariable* _gc_overhead_limit_exceeded_counter; 45 46 const char* _name_space; 47 48 public: 49 enum Name { 50 NONE, 51 GCPolicyCountersKind, 52 GCAdaptivePolicyCountersKind, 53 PSGCAdaptivePolicyCountersKind 54 }; 55 56 GCPolicyCounters(const char* name, int collectors, int generations); 57 58 inline PerfVariable* tenuring_threshold() const { 59 return _tenuring_threshold; 60 } 61 62 inline PerfVariable* desired_survivor_size() const { 63 return _desired_survivor_size; 64 } 65 66 inline PerfVariable* gc_overhead_limit_exceeded_counter() const { 67 return _gc_overhead_limit_exceeded_counter; 68 } 69 70 const char* name_space() const { return _name_space; } 71 72 virtual void update_counters() {} 73 74 virtual GCPolicyCounters::Name kind() const { 75 return GCPolicyCounters::GCPolicyCountersKind; 76 } 77 }; 78 79 #endif // SHARE_GC_SHARED_GCPOLICYCOUNTERS_HPP