| /* |
| * Copyright (c) 2016, 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * 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.Paths; |
| import java.util.List; |
| |
| import jdk.test.lib.dcmd.JcmdExecutor; |
| import jdk.test.lib.dcmd.PidJcmdExecutor; |
| |
| /* |
| * @test TestJcmdLogLevelChange |
| * @key jfr |
| * @summary Test changing log level |
| * |
| * @library /test/lib /test/jdk |
| * |
| * @run main/othervm -Xlog:jfr=info jdk.jfr.jcmd.TestJcmdChangeLogLevel |
| */ |
| public class TestJcmdChangeLogLevel { |
| public static void main(String[] args) throws Exception { |
| final String fileName = "jfr_trace.txt"; |
| final String findWhat = "[info][jfr] Flight Recorder initialized"; |
| boolean passed = false; |
| |
| JcmdExecutor je = new PidJcmdExecutor(); |
| je.execute("VM.log output='file=" + fileName + "' what='jfr=info'"); |
| je.execute("JFR.start duration=1s"); |
| List<String> lines; |
| |
| do { |
| try { |
| lines = Files.readAllLines(Paths.get(fileName)); |
| } catch (IOException e) { |
| throw new Error(e); |
| } |
| for (String l : lines) { |
| if (l.toString().contains(findWhat)) { |
| passed = true; |
| break; |
| } |
| } |
| if (lines.size() > 100) { |
| break; /* did not find it */ |
| } |
| } while(!passed); |
| |
| if (!passed) { |
| throw new Error("Not found " + findWhat + " in stream" + lines); |
| } |
| |
| System.out.println("PASSED"); |
| } |
| } |