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8266936: Add a finalization JFR event

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Reviewed-by: coleenp, mchung, egahlin
This commit is contained in:
Markus Grönlund 2021-10-18 16:52:36 +00:00
parent bcbe3845d9
commit 72a976ef05
36 changed files with 1517 additions and 551 deletions
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3
src/java.base/share/classes/java/lang/ref/Finalizer.java
View file

@ -86,6 +86,7 @@ final class Finalizer extends FinalReference<Object> { /* Package-private; must
assert finalizee != null;
if (!(finalizee instanceof java.lang.Enum)) {
jla.invokeFinalize(finalizee);
reportComplete(finalizee);
// Clear stack slot containing this variable, to decrease
// the chances of false retention with a conservative GC
@ -95,6 +96,8 @@ final class Finalizer extends FinalReference<Object> { /* Package-private; must
super.clear();
}
private static native void reportComplete(Object finalizee);
/* Create a privileged secondary finalizer thread in the system thread
* group for the given Runnable, and wait for it to complete.
*

35
src/java.base/share/native/libjava/Finalizer.c Normal file
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@ -0,0 +1,35 @@
/*
* Copyright (c) 2021, Oracle and/or its affiliates. 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.
*/
#include "jvm.h"
#include "java_lang_ref_Finalizer.h"
JNIEXPORT void JNICALL
Java_java_lang_ref_Finalizer_reportComplete(JNIEnv* env, jclass cls, jobject finalizee) {
JVM_ReportFinalizationComplete(env, finalizee);
}