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8250627: Use -XX:+/-UseContainerSupport for enabling/disabling Java container metrics

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Reviewed-by: aph, dholmes, bobv
This commit is contained in:
Severin Gehwolf 2020-07-24 19:57:06 +02:00
parent 10b9d0b6a6
commit e6517d1ae2
7 changed files with 175 additions and 2 deletions
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8
src/java.base/linux/classes/jdk/internal/platform/CgroupMetrics.java
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@ -160,7 +160,13 @@ public class CgroupMetrics implements Metrics {
}
public static Metrics getInstance() {
if (!isUseContainerSupport()) {
// Return null on -XX:-UseContainerSupport
return null;
}
return CgroupSubsystemFactory.create();
}
}
private static native boolean isUseContainerSupport();
}

35
src/java.base/linux/native/libjava/CgroupMetrics.c Normal file
View file

@ -0,0 +1,35 @@
/*
* Copyright (c) 2020, Red Hat, Inc.
* 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 "jni.h"
#include "jvm.h"
#include "jdk_internal_platform_CgroupMetrics.h"
JNIEXPORT jboolean JNICALL
Java_jdk_internal_platform_CgroupMetrics_isUseContainerSupport(JNIEnv *env, jclass ignored)
{
return JVM_IsUseContainerSupport();
}