jdk8-mips64-public/hotspot: src/share/vm/trace/traceEvent.hpp@fa21c9537e6e

8035667: EventMetaspaceSummary doesn't report committed Metaspace memory
Reviewed-by: jmasa, stefank

     1 /*

     2  * Copyright (c) 2012, 2013, 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  */

    25 #ifndef SHARE_VM_TRACE_TRACEEVENT_HPP

    26 #define SHARE_VM_TRACE_TRACEEVENT_HPP

    28 #include "utilities/macros.hpp"

    30 enum EventStartTime {

    31   UNTIMED,

    32   TIMED

    33 };

    35 #if INCLUDE_TRACE

    37 #include "trace/traceBackend.hpp"

    38 #include "trace/tracing.hpp"

    39 #include "tracefiles/traceEventIds.hpp"

    40 #include "tracefiles/traceTypes.hpp"

    41 #include "utilities/ticks.hpp"

    43 template<typename T>

    44 class TraceEvent : public StackObj {

    45  private:

    46   bool _started;

    47 #ifdef ASSERT

    48   bool _committed;

    49   bool _cancelled;

    50  protected:

    51   bool _ignore_check;

    52 #endif

    54  protected:

    55   jlong _startTime;

    56   jlong _endTime;

    58   void set_starttime(const TracingTime& time) {

    59     _startTime = time;

    60   }

    62   void set_endtime(const TracingTime& time) {

    63     _endTime = time;

    64   }

    66  public:

    67   TraceEvent(EventStartTime timing=TIMED) :

    68     _startTime(0),

    69     _endTime(0),

    70     _started(false)

    71 #ifdef ASSERT

    72     ,

    73     _committed(false),

    74     _cancelled(false),

    75     _ignore_check(false)

    76 #endif

    77   {

    78     if (T::is_enabled()) {

    79       _started = true;

    80       if (timing == TIMED && !T::isInstant) {

    81         static_cast<T *>(this)->set_starttime(Tracing::time());

    82       }

    83     }

    84   }

    86   static bool is_enabled() {

    87     return Tracing::is_event_enabled(T::eventId);

    88   }

    90   bool should_commit() {

    91     return _started;

    92   }

    94   void ignoreCheck() {

    95     DEBUG_ONLY(_ignore_check = true);

    96   }

    98   void commit() {

    99     if (!should_commit()) {

   100         cancel();

   101         return;

   102     }

   103     if (_endTime == 0) {

   104       static_cast<T*>(this)->set_endtime(Tracing::time());

   105     }

   106     if (static_cast<T*>(this)->should_write()) {

   107       static_cast<T*>(this)->writeEvent();

   108     }

   109     set_commited();

   110   }

   112   void set_starttime(const Ticks& time) {

   113     _startTime = time.value();

   114   }

   116   void set_endtime(const Ticks& time) {

   117     _endTime = time.value();

   118   }

   120   TraceEventId id() const {

   121     return T::eventId;

   122   }

   124   bool is_instant() const {

   125     return T::isInstant;

   126   }

   128   bool is_requestable() const {

   129     return T::isRequestable;

   130   }

   132   bool has_thread() const {

   133     return T::hasThread;

   134   }

   136   bool has_stacktrace() const {

   137     return T::hasStackTrace;

   138   }

   140   void cancel() {

   141     assert(!_committed && !_cancelled, "event was already committed/cancelled");

   142     DEBUG_ONLY(_cancelled = true);

   143   }

   145   void set_commited() {

   146     assert(!_committed, "event has already been committed");

   147     DEBUG_ONLY(_committed = true);

   148   }

   150   ~TraceEvent() {

   151     if (_started) {

   152       assert(_ignore_check || _committed || _cancelled, "event was not committed/cancelled");

   153     }

   154   }

   155 };

   157 #endif /* INCLUDE_TRACE */

   159 #endif /* SHARE_VM_TRACE_TRACEEVENT_HPP */

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