/*
* Copyright ( c ) 2019 , 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 .
*
* 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 jdk.jfr.jcmd;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.stream.Stream;
import jdk.jfr.Recording;
import jdk.test.lib.Asserts;
/**
* @ test
* @ bug 8220657
* @ key jfr
* @ requires vm . hasJFR
* @ library / test / lib / test / jdk
* @ run main / othervm jdk . jfr . jcmd . TestJcmdDumpWithFileName
*/
public class TestJcmdDumpWithFileName {
public static void main(String[] args) throws Exception {
testDumpAll();
testDumpNamed();
testDumpNamedWithFilename();
}
private static void testDumpAll() throws Exception {
Path p = Path.of("testDumpAll.jfr" ).toAbsolutePath();
try (Recording r = new Recording()) {
r.setName("testDumpAll" );
r.setDestination(p);
r.start();
JcmdHelper.jcmd("JFR.dump" );
Asserts.assertFalse(namedFile(p), "Unexpected file: " + p.toString());
Asserts.assertTrue(generatedFile(), "Expected generated file" );
}
cleanup();
}
private static void testDumpNamed() throws Exception {
Path p = Path.of("testDumpNamed.jfr" ).toAbsolutePath();
try (Recording r = new Recording()) {
r.setName("testDumpNamed" );
r.setDestination(p);
r.start();
JcmdHelper.jcmd("JFR.dump" , "name=testDumpNamed" );
Asserts.assertTrue(namedFile(p), "Expected file: " + p.toString());
Asserts.assertFalse(generatedFile(), "Unexpected generated file" );
}
cleanup();
}
private static void testDumpNamedWithFilename() throws Exception {
Path p = Path.of("testDumpNamedWithFilename.jfr" ).toAbsolutePath();
Path override = Path.of("override.jfr" ).toAbsolutePath();
try (Recording r = new Recording()) {
r.setName("testDumpNamedWithFilename" );
r.setDestination(p);
r.start();
JcmdHelper.jcmd("JFR.dump" , "name=testDumpNamedWithFilename" , "filename=" + override.toString());
Asserts.assertFalse(namedFile(p), "Unexpected file: " + p.toString());
Asserts.assertTrue(namedFile(override), "Expected file: " + override.toString());
Asserts.assertFalse(generatedFile(), "Unexpected generated file" );
}
cleanup();
}
private static boolean namedFile(Path dumpFile) throws IOException {
return Files.exists(dumpFile) && (Files.size(dumpFile) > 0 );
}
private static boolean generatedFile() throws IOException {
long pid = ProcessHandle.current().pid();
Stream<Path> stream = Files.find(Path.of("." ), 1 , (p, a) -> p.toString()
.matches("^.*hotspot-pid-" + pid + "-[0-9_]+\\.jfr$" ) && (a.size() > 0 L));
try (stream) {
return stream.findAny()
.isPresent();
}
}
private static void cleanup() throws IOException {
Stream<Path> stream = Files.find(Path.of("." ), 1 , (p, a) -> p.toString().endsWith(".jfr" ));
try (stream) {
stream.forEach(p -> p.toFile().delete ());
}
}
}
Messung V0.5 in Prozent C=99 H=72 G=86
¤ Dauer der Verarbeitung: 0.8 Sekunden
(vorverarbeitet am 2026-10-11)
¤
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