/*
* Copyright ( c ) 2015 , 2018 , 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.jcmd;
import java.io.File;
import java.util.Arrays;
import java.util.Iterator;
import java.util.stream.Collectors;
import jdk.test.lib.Asserts;
import jdk.test.lib.dcmd.CommandExecutor;
import jdk.test.lib.dcmd.PidJcmdExecutor;
import jdk.test.lib.process.OutputAnalyzer;
public class JcmdHelper {
// Wait until recording's state became running
public static void waitUntilRunning(String name) throws Exception {
long timeoutAt = System.currentTimeMillis() + 10000 ;
while (true ) {
OutputAnalyzer output = jcmdCheck(name, false );
try {
// The expected output can look like this:
// Recording 1: name=1 (running)
output.shouldMatch("^Recording \\d+: name=" + name
+ " .*\\W{1}running\\W{1}" );
return ;
} catch (RuntimeException e) {
if (System.currentTimeMillis() > timeoutAt) {
Asserts.fail("Recording not started: " + name);
}
Thread .sleep(100 );
}
}
}
public static void stopAndCheck(String name) throws Exception {
jcmd("JFR.stop" , "name=\" " + name + " \"" );
assertRecordingNotRunning(name);
}
public static void stopWriteToFileAndCheck(String name, File file) throws Exception {
OutputAnalyzer output = jcmd("JFR.stop" ,
"name=\" " + name + " \"" ,
"filename=\" " + file.getAbsolutePath() + " \"" );
JcmdAsserts.assertStoppedAndWrittenTo(output, name, file);
assertRecordingNotRunning(name);
}
public static void stopCompressAndCheck(String name, File file) throws Exception {
OutputAnalyzer output = jcmd("JFR.stop" ,
"name=\" " + name + " \"" ,
"compress=true" ,
"filename=\" " + file.getAbsolutePath() + " \"" );
JcmdAsserts.assertStoppedAndWrittenTo(output, name, file);
checkAndAssertNoRecordingsAvailable();
}
public static void stopDefaultRecordingAndCheck() throws Exception {
OutputAnalyzer output = jcmd("JFR.stop" , "recording=0" );
JcmdAsserts.assertStoppedDefaultRecording(output);
checkAndAssertNoRecordingsAvailable();
}
public static void checkAndAssertNoRecordingsAvailable() throws Exception {
OutputAnalyzer output = jcmd("JFR.check" );
JcmdAsserts.assertNoRecordingsAvailable(output);
}
public static void assertRecordingNotExist(String name) throws Exception {
OutputAnalyzer output = jcmdCheck(name, false );
JcmdAsserts.assertRecordingNotExist(output, name);
}
public static void assertRecordingNotRunning(String name) throws Exception {
OutputAnalyzer output = jcmdCheck(name, false );
JcmdAsserts.assertRecordingNotRunning(output, name);
}
public static void assertRecordingIsRunning(String name) throws Exception {
OutputAnalyzer output = jcmdCheck(name, false );
JcmdAsserts.assertRecordingIsRunning(output, name);
}
public static OutputAnalyzer jcmd(int expectedExitValue, String... args) {
String argsString = Arrays.stream(args).collect(Collectors.joining(" " ));
CommandExecutor executor = new PidJcmdExecutor();
OutputAnalyzer oa = executor.execute(argsString);
oa.shouldHaveExitValue(expectedExitValue);
return oa;
}
public static OutputAnalyzer jcmd(String... args) {
return jcmd(0 , args);
}
public static OutputAnalyzer jcmdCheck(String recordingName, boolean verbose) {
return jcmd("JFR.check" , "name=" + recordingName, "verbose=" + verbose);
}
public static String readFilename(OutputAnalyzer output) throws Exception {
Iterator<String> it = output.asLines().iterator();
while (it.hasNext()) {
String line = it.next();
if (line.contains("written to" )) {
line = it.next(); // blank line
return it.next();
}
}
throw new Exception("Could not find filename of dumped recording." );
}
}
Messung V0.5 in Prozent C=94 H=86 G=89
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-06-10)
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