1 /* 2 * Copyright (c) 2012, 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 Test6941923.java 26 * @bug 6941923 27 * @summary test new added flags for gc log rotation 28 * @library /testlibrary 29 * @run main/othervm/timeout=600 Test6941923 30 * 31 */ 32 import com.oracle.java.testlibrary.*; 33 import java.io.File; 34 import java.io.FilenameFilter; 35 import java.util.ArrayList; 36 37 class GarbageGenerator { 38 39 static int cap = 20000; 40 41 // don't let C2 make any optimization 42 public static ArrayList< byte[]> tmpList = new ArrayList(cap); 43 44 public static void main(String[] args) throws Exception { 45 46 long limit = Long.parseLong(args[0]) * 60L * 1000L; // minutes 47 int fix_size = 2048; 48 int loop = 0; 49 long time1 = System.currentTimeMillis(); 50 long time2 = System.currentTimeMillis(); 51 while (time2 - time1 < limit) { 52 byte[] g = new byte[fix_size]; 53 tmpList.add(g); 54 loop++; 55 if (loop > cap) { 56 tmpList = null; 57 cap *= 2; 58 if (cap > 80000) { 59 cap = 80000; 60 } 61 tmpList = new ArrayList(cap); 62 } 63 time2 = System.currentTimeMillis(); 64 } 65 66 67 System.out.print("\r... " + (time2 - time1) / 1000 + " seconds"); 68 69 } 70 } 71 72 public class Test6941923 { 73 74 static final File currentDirectory = new File(System.getProperty("user.dir")); 75 static final String logFileName = "test.log"; 76 static final int logFileSizeK = 16; 77 static FilenameFilter logFilter = new FilenameFilter() { 78 @Override 79 public boolean accept(File dir, String name) { 80 return name.startsWith(logFileName); 81 } 82 }; 83 84 public static void cleanLogs() { 85 for (File log : currentDirectory.listFiles(logFilter)) { 86 if (!log.delete()) { 87 throw new Error("Unable to delete " + log.getAbsolutePath()); 88 } 89 } 90 } 91 92 public static void runTest(int numberOfFiles) throws Exception { 93 94 String minutesToRun = String.valueOf(numberOfFiles); 95 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-cp", System.getProperty("java.class.path"), "-Xloggc:" + logFileName, 96 "-XX:+PrintGC", "-XX:+PrintGCDetails", "-XX:+UseGCLogFileRotation", "-XX:NumberOfGCLogFiles=" + numberOfFiles, 97 "-XX:GCLogFileSize=" + logFileSizeK + "K", "-Xmx128M", GarbageGenerator.class.getName(), minutesToRun); 98 Process process = pb.start(); 99 int result = process.waitFor(); 100 if (result != 0) { 101 throw new Error("Unexpected exit code = " + result); 102 } 103 File[] logs = currentDirectory.listFiles(logFilter); 104 int smallFilesNumber = 0; 105 for (File log : logs) { 106 if (log.length() < logFileSizeK * 1024) { 107 smallFilesNumber++; 108 } 109 } 110 if (smallFilesNumber > 1) { 111 throw new Error("There should maximum one log with size < " + logFileSizeK + "K"); 112 } 113 } 114 115 public static void main(String[] args) throws Exception { 116 cleanLogs(); 117 runTest(1); 118 cleanLogs(); 119 runTest(3); 120 cleanLogs(); 121 } 122 }