88 lines
2.8 KiB
C++
88 lines
2.8 KiB
C++
/*
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* Copyright (c) 2002, 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef SHARE_VM_GC_SHARED_COLLECTORCOUNTERS_HPP
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#define SHARE_VM_GC_SHARED_COLLECTORCOUNTERS_HPP
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#include "runtime/perfData.hpp"
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// CollectorCounters is a holder class for performance counters
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// that track a collector
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class CollectorCounters: public CHeapObj<mtGC> {
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friend class VMStructs;
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private:
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PerfCounter* _invocations;
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PerfCounter* _time;
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PerfVariable* _last_entry_time;
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PerfVariable* _last_exit_time;
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// Constant PerfData types don't need to retain a reference.
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// However, it's a good idea to document them here.
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// PerfStringConstant* _name;
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char* _name_space;
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public:
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CollectorCounters(const char* name, int ordinal);
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~CollectorCounters() {
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if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space);
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}
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inline PerfCounter* invocation_counter() const { return _invocations; }
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inline PerfCounter* time_counter() const { return _time; }
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inline PerfVariable* last_entry_counter() const { return _last_entry_time; }
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inline PerfVariable* last_exit_counter() const { return _last_exit_time; }
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const char* name_space() const { return _name_space; }
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};
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class TraceCollectorStats: public PerfTraceTimedEvent {
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protected:
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CollectorCounters* _c;
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public:
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inline TraceCollectorStats(CollectorCounters* c) :
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PerfTraceTimedEvent(c->time_counter(), c->invocation_counter()),
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_c(c) {
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if (UsePerfData) {
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_c->last_entry_counter()->set_value(os::elapsed_counter());
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}
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}
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inline ~TraceCollectorStats() {
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if (UsePerfData) _c->last_exit_counter()->set_value(os::elapsed_counter());
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}
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};
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#endif // SHARE_VM_GC_SHARED_COLLECTORCOUNTERS_HPP
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