1 /* 2 * Copyright (c) 2002, 2010, 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_VM_GC_IMPLEMENTATION_SHARED_COLLECTORCOUNTERS_HPP 26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_COLLECTORCOUNTERS_HPP 27 28 #include "runtime/perfData.hpp" 29 30 // CollectorCounters is a holder class for performance counters 31 // that track a collector 32 33 class CollectorCounters: public CHeapObj { 34 friend class VMStructs; 35 36 private: 37 PerfCounter* _invocations; 38 PerfCounter* _time; 39 PerfVariable* _last_entry_time; 40 PerfVariable* _last_exit_time; 41 42 // Constant PerfData types don't need to retain a reference. 43 // However, it's a good idea to document them here. 44 // PerfStringConstant* _name; 45 46 char* _name_space; 47 48 public: 49 50 CollectorCounters(const char* name, int ordinal); 51 52 ~CollectorCounters() { 53 if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space); 54 } 55 56 inline PerfCounter* invocation_counter() const { return _invocations; } 57 58 inline PerfCounter* time_counter() const { return _time; } 59 60 inline PerfVariable* last_entry_counter() const { return _last_entry_time; } 61 62 inline PerfVariable* last_exit_counter() const { return _last_exit_time; } 63 64 const char* name_space() const { return _name_space; } 65 }; 66 67 class TraceCollectorStats: public PerfTraceTimedEvent { 68 69 protected: 70 CollectorCounters* _c; 71 72 public: 73 inline TraceCollectorStats(CollectorCounters* c) : 74 PerfTraceTimedEvent(c->time_counter(), c->invocation_counter()), 75 _c(c) { 76 77 if (UsePerfData) { 78 _c->last_entry_counter()->set_value(os::elapsed_counter()); 79 } 80 } 81 82 inline ~TraceCollectorStats() { 83 if (UsePerfData) _c->last_exit_counter()->set_value(os::elapsed_counter()); 84 } 85 }; 86 87 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_COLLECTORCOUNTERS_HPP