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Refactor and add framework for native jfr event support #3770
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52 changes: 52 additions & 0 deletions
52
....oracle.svm.core.jdk11/src/com/oracle/svm/core/jdk11/jfr/JfrEventSupportJDK11OrLater.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| /* | ||
| * Copyright (c) 2021, 2021, Oracle and/or its affiliates. All rights reserved. | ||
| * Copyright (c) 2020, 2021, Red Hat Inc. All rights reserved. | ||
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| * | ||
| * This code is free software; you can redistribute it and/or modify it | ||
| * under the terms of the GNU General Public License version 2 only, as | ||
| * published by the Free Software Foundation. Oracle designates this | ||
| * particular file as subject to the "Classpath" exception as provided | ||
| * by Oracle in the LICENSE file that accompanied this code. | ||
| * | ||
| * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| * version 2 for more details (a copy is included in the LICENSE file that | ||
| * accompanied this code). | ||
| * | ||
| * You should have received a copy of the GNU General Public License version | ||
| * 2 along with this work; if not, write to the Free Software Foundation, | ||
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| * | ||
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| * or visit www.oracle.com if you need additional information or have any | ||
| * questions. | ||
| */ | ||
| package com.oracle.svm.core.jdk11.jfr; | ||
|
|
||
| import org.graalvm.compiler.serviceprovider.JavaVersionUtil; | ||
| import org.graalvm.nativeimage.hosted.Feature; | ||
| import org.graalvm.nativeimage.ImageSingletons; | ||
|
|
||
| import com.oracle.svm.core.annotate.AutomaticFeature; | ||
| import com.oracle.svm.core.jfr.JfrEventSupport; | ||
|
|
||
| /** | ||
| * Jfr event support for supported JDK versions. | ||
| */ | ||
| final class JfrEventSupportJDK11OrLater extends JfrEventSupport { | ||
| } | ||
|
|
||
| @AutomaticFeature | ||
| final class JfrFeatureJDK11OrLater implements Feature { | ||
| @Override | ||
| public boolean isInConfiguration(IsInConfigurationAccess access) { | ||
| return JavaVersionUtil.JAVA_SPEC >= 11; | ||
| } | ||
|
|
||
| @Override | ||
| public void afterRegistration(AfterRegistrationAccess access) { | ||
| ImageSingletons.add(JfrEventSupport.class, new JfrEventSupportJDK11OrLater()); | ||
| } | ||
| } |
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I think it would be better to have the JFR implementation (and its dependencies) in a separate project. Pretty much all VM-internal events should use the
JfrNativeEventWriteranyways (via some JDK-independent abstraction).