jdk8-mips64-public/hotspot: src/share/vm/jfr/recorder/checkpoint/jfrMetadataEvent.hpp@a248d0be1309

8229401: Fix JFR code cache test failures
8223689: Add JFR Thread Sampling Support
8223690: Add JFR BiasedLock Event Support
8223691: Add JFR G1 Region Type Change Event Support
8223692: Add JFR G1 Heap Summary Event Support
Summary: Backport JFR from JDK11, additional fixes
Reviewed-by: neugens, apetushkov
Contributed-by: denghui.ddh@alibaba-inc.com

     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_RECORDER_CHECKPOINT_JFRMETADATAEVENT_HPP

    26 #define SHARE_VM_JFR_RECORDER_CHECKPOINT_JFRMETADATAEVENT_HPP

    28 #include "jni.h"

    29 #include "memory/allocation.hpp"

    31 class JfrChunkWriter;

    33 //

    34 // Metadata is continuously updated in Java as event classes are loaded / unloaded.

    35 // Using update(), Java stores a binary representation back to native.

    36 // This is for easy access on chunk finalization as well as having it readily available in the case of fatal error.

    37 //

    38 class JfrMetadataEvent : AllStatic {

    39  public:

    40   static void lock();

    41   static void unlock();

    42   static size_t write(JfrChunkWriter& writer, jlong metadata_offset);

    43   static void update(jbyteArray metadata);

    44 };

    46 #endif // SHARE_VM_JFR_RECORDER_CHECKPOINT_JFRMETADATAEVENT_HPP

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

src/share/vm/jfr/recorder/checkpoint/jfrMetadataEvent.hpp@a248d0be1309

src/share/vm/jfr/recorder/checkpoint/jfrMetadataEvent.hpp