jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/shared/collectorCounters.hpp@7a102acc9f17

     1 /*

     2  * Copyright 2002-2004 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

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    23  */

    25 // CollectorCounters is a holder class for performance counters

    26 // that track a collector

    28 class CollectorCounters: public CHeapObj {

    29   friend class VMStructs;

    31   private:

    32     PerfCounter*      _invocations;

    33     PerfCounter*      _time;

    34     PerfVariable*     _last_entry_time;

    35     PerfVariable*     _last_exit_time;

    37     // Constant PerfData types don't need to retain a reference.

    38     // However, it's a good idea to document them here.

    39     // PerfStringConstant*     _name;

    41     char*             _name_space;

    43   public:

    45     CollectorCounters(const char* name, int ordinal);

    47     ~CollectorCounters() {

    48       if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space);

    49     }

    51     inline PerfCounter* invocation_counter() const  { return _invocations; }

    53     inline PerfCounter* time_counter() const        { return _time; }

    55     inline PerfVariable* last_entry_counter() const { return _last_entry_time; }

    57     inline PerfVariable* last_exit_counter() const  { return _last_exit_time; }

    59     const char* name_space() const                  { return _name_space; }

    60 };

    62 class TraceCollectorStats: public PerfTraceTimedEvent {

    64   protected:

    65     CollectorCounters* _c;

    67   public:

    68     inline TraceCollectorStats(CollectorCounters* c) :

    69            PerfTraceTimedEvent(c->time_counter(), c->invocation_counter()),

    70            _c(c) {

    72       if (UsePerfData) {

    73          _c->last_entry_counter()->set_value(os::elapsed_counter());

    74       }

    75     }

    77     inline ~TraceCollectorStats() {

    78       if (UsePerfData) _c->last_exit_counter()->set_value(os::elapsed_counter());

    79     }

    80 };

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