/*
* Copyright ( c ) 2017 , 2018 , 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 .
*
* 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
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*/
package gc.epsilon;
/**
* @ test TestDieDefault
* @ requires vm . gc . Epsilon
* @ summary Epsilon GC should die on heap exhaustion
* @ library / test / lib
* @ run driver gc . epsilon . TestDieDefault
*/
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
public class TestDieDefault {
public static void passWith(String... args) throws Exception {
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(args);
OutputAnalyzer out = new OutputAnalyzer(pb.start());
out.shouldNotContain("OutOfMemoryError" );
out.shouldHaveExitValue(0 );
}
public static void failWith(String... args) throws Exception {
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(args);
OutputAnalyzer out = new OutputAnalyzer(pb.start());
out.shouldContain("OutOfMemoryError" );
if (out.getExitValue() == 0 ) {
throw new IllegalStateException("Should have failed with non-zero exit code" );
}
}
public static void main(String[] args) throws Exception {
passWith("-Xmx64m" ,
"-XX:+UnlockExperimentalVMOptions" ,
"-XX:+UseEpsilonGC" ,
"-Dcount=1" ,
TestDieDefault.Workload.class .getName());
failWith("-Xmx64m" ,
"-XX:+UnlockExperimentalVMOptions" ,
"-XX:+UseEpsilonGC" ,
TestDieDefault.Workload.class .getName());
failWith("-Xmx64m" ,
"-Xint" ,
"-XX:+UnlockExperimentalVMOptions" ,
"-XX:+UseEpsilonGC" ,
TestDieDefault.Workload.class .getName());
failWith("-Xmx64m" ,
"-Xbatch" ,
"-Xcomp" ,
"-XX:TieredStopAtLevel=1" ,
"-XX:+UnlockExperimentalVMOptions" ,
"-XX:+UseEpsilonGC" ,
TestDieDefault.Workload.class .getName());
failWith("-Xmx64m" ,
"-Xbatch" ,
"-Xcomp" ,
"-XX:-TieredCompilation" ,
"-XX:+UnlockExperimentalVMOptions" ,
"-XX:+UseEpsilonGC" ,
TestDieDefault.Workload.class .getName());
}
public static class Workload {
static int COUNT = Integer.getInteger("count" , 1 _000 _000 _000 ); // ~24 GB allocation
static volatile Object sink;
public static void main(String... args) {
for (int c = 0 ; c < COUNT; c++) {
sink = new Object();
}
}
}
}
Messung V0.5 in Prozent C=98 H=80 G=89
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-10-11)
¤
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