/*
* Copyright ( c ) 2017 , 2022 , 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 .
*
* 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 .
*
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*/
package jdk.jfr.event.profiling;
import java.time.Duration;
import jdk.jfr.Recording;
import jdk.jfr.consumer.RecordingStream;
import jdk.jfr.internal.JVM;
import jdk.test.lib.jfr.EventNames;
/*
* @ test
* @ key jfr
* @ requires vm . hasJFR
* @ library / test / lib
* @ modules jdk . jfr / jdk . jfr . internal
* @ run main jdk . jfr . event . profiling . TestNative
*/
public class TestNative {
final static String NATIVE_EVENT = EventNames.NativeMethodSample;
static volatile boolean alive = true ;
public static void main(String[] args) throws Exception {
try (RecordingStream rs = new RecordingStream()) {
rs.enable(NATIVE_EVENT).withPeriod(Duration.ofMillis(1 ));
rs.onEvent(NATIVE_EVENT, e -> {
alive = false ;
rs.close();
});
Thread t = new Thread (TestNative::nativeMethod);
t.setDaemon(true );
t.start();
rs.start();
}
}
public static void nativeMethod() {
while (alive) {
JVM.getJVM().getPid();
}
}
}
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(vorverarbeitet am 2026-06-24)
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