1 /* 2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test TestGCLogRotationViaJcmd.java 26 * @bug 7090324 27 * @summary test for gc log rotation via jcmd 28 * @library /testlibrary 29 * @build com.oracle.java.testlibrary.* 30 * @run main/othervm -Xloggc:test.log -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=3 TestGCLogRotationViaJcmd 31 * 32 */ 33 import com.oracle.java.testlibrary.*; 34 import java.io.File; 35 import java.io.FilenameFilter; 36 37 public class TestGCLogRotationViaJcmd { 38 39 static final File currentDirectory = new File("."); 40 static final String LOG_FILE_NAME = "test.log"; 41 static final int NUM_LOGS = 3; 42 43 static FilenameFilter logFilter = new FilenameFilter() { 44 @Override 45 public boolean accept(File dir, String name) { 46 return name.startsWith(LOG_FILE_NAME); 47 } 48 }; 49 50 public static void main(String[] args) throws Exception { 51 // Grab the pid from the current java process 52 String pid = Integer.toString(ProcessTools.getProcessId()); 53 54 // Create a JDKToolLauncher 55 JDKToolLauncher jcmd = JDKToolLauncher.create("jcmd") 56 .addToolArg(pid) 57 .addToolArg("GC.rotate_log"); 58 59 for (int times = 1; times < NUM_LOGS; times++) { 60 // Run jcmd <pid> GC.rotate_log 61 ProcessBuilder pb = new ProcessBuilder(jcmd.getCommand()); 62 63 // Make sure we didn't crash 64 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 65 output.shouldHaveExitValue(0); 66 } 67 68 // GC log check 69 File[] logs = currentDirectory.listFiles(logFilter); 70 if (logs.length != NUM_LOGS) { 71 throw new Error("There are only " + logs.length 72 + " logs instead " + NUM_LOGS); 73 } 74 75 } 76 77 } 78