jdk8-mips64-public/hotspot: src/share/vm/jfr/support/jfrFlush.hpp@b985cbb00e68

8223147: JFR Backport
8199712: Flight Recorder
8203346: JFR: Inconsistent signature of jfr_add_string_constant
8195817: JFR.stop should require name of recording
8195818: JFR.start should increase autogenerated name by one
8195819: Remove recording=x from jcmd JFR.check output
8203921: JFR thread sampling is missing fixes from JDK-8194552
8203929: Limit amount of data for JFR.dump
8203664: JFR start failure after AppCDS archive created with JFR StartFlightRecording
8003209: JFR events for network utilization
8207392: [PPC64] Implement JFR profiling
8202835: jfr/event/os/TestSystemProcess.java fails on missing events
Summary: Backport JFR from JDK11. Initial integration
Reviewed-by: neugens

     1 /*

     2  * Copyright (c) 2016, 2018, 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_JFR_SUPPORT_JFRFLUSH_HPP

    26 #define SHARE_VM_JFR_SUPPORT_JFRFLUSH_HPP

    28 #include "jfr/recorder/storage/jfrBuffer.hpp"

    29 #include "jfr/utilities/jfrTypes.hpp"

    30 #include "memory/allocation.hpp"

    32 class Thread;

    34 class JfrFlush : public StackObj {

    35  public:

    36   typedef JfrBuffer Type;

    37   JfrFlush(Type* old, size_t used, size_t requested, Thread* t);

    38   Type* result() const { return _result; }

    39  private:

    40   Type* _result;

    41 };

    43 void jfr_conditional_flush(JfrEventId id, size_t size, Thread* t);

    44 bool jfr_is_event_enabled(JfrEventId id);

    45 bool jfr_has_stacktrace_enabled(JfrEventId id);

    46 bool jfr_save_stacktrace(Thread* t);

    47 void jfr_clear_stacktrace(Thread* t);

    49 template <typename Event>

    50 class JfrConditionalFlush {

    51  public:

    52   typedef JfrBuffer Type;

    53   JfrConditionalFlush(Thread* t) {

    54     if (jfr_is_event_enabled(Event::eventId)) {

    55       jfr_conditional_flush(Event::eventId, sizeof(Event), t);

    56     }

    57   }

    58 };

    60 template <typename Event>

    61 class JfrConditionalFlushWithStacktrace : public JfrConditionalFlush<Event> {

    62   Thread* _t;

    63   bool _owner;

    64  public:

    65   JfrConditionalFlushWithStacktrace(Thread* t) : JfrConditionalFlush<Event>(t), _t(t), _owner(false) {

    66     if (Event::has_stacktrace() && jfr_has_stacktrace_enabled(Event::eventId)) {

    67       _owner = jfr_save_stacktrace(t);

    68     }

    69   }

    70   ~JfrConditionalFlushWithStacktrace() {

    71     if (_owner) {

    72       jfr_clear_stacktrace(_t);

    73     }

    74   }

    75 };

    77 #endif // SHARE_VM_JFR_SUPPORT_JFRFLUSH_HPP

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/jfr/support/jfrFlush.hpp@b985cbb00e68

src/share/vm/jfr/support/jfrFlush.hpp