Quelle TestJcmdConfigureReadOnly.java
Sprache: JAVA
/* * Copyright (c) 2021, 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 jdk.test.lib.process.OutputAnalyzer;
/** * @test * @summary The test verifies JFR.configure command can only set certain options before JFR is started. * @key jfr * @requires vm.hasJFR * @library /test/lib /test/jdk * @run main/othervm jdk.jfr.jcmd.TestJcmdConfigureReadOnly
*/ publicclass TestJcmdConfigureReadOnly { publicstaticvoid main(String[] args) throws Exception { // Set an option before initializing JFR.
OutputAnalyzer output = JcmdHelper.jcmd("JFR.configure", "stackdepth=" + 128);
output.shouldContain("Stack depth: 128"); // JFR.start will initialize JFR.
output = JcmdHelper.jcmd("JFR.start");
JcmdAsserts.assertRecordingHasStarted(output); // Attempt to set a new value after JFR initialization.
output = JcmdHelper.jcmd("JFR.configure", "stackdepth=" + 256); // After initialization, the option is considered read-only.
output.shouldContain("Stack depth: 128");
}
}
Messung V0.5
¤ Dauer der Verarbeitung: 0.18 Sekunden
(vorverarbeitet)
¤
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.