1 /* 2 * Copyright (c) 2012, 2013, 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 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 import java.util.Arrays; 37 38 class GCLoggingGenerator { 39 40 public static void main(String[] args) throws Exception { 41 42 long sizeOfLog = Long.parseLong(args[0]); 43 long lines = sizeOfLog / 80; 44 // full.GC generates ad least 1-line which is not shorter then 80 chars 45 // for some GC 2 shorter lines are generated 46 for (long i = 0; i < lines; i++) { 47 System.gc(); 48 } 49 } 50 } 51 52 public class Test6941923 { 53 54 static final File currentDirectory = new File("."); 55 static final String logFileName = "test.log"; 56 static final int logFileSizeK = 16; 57 static FilenameFilter logFilter = new FilenameFilter() { 58 @Override 59 public boolean accept(File dir, String name) { 60 return name.startsWith(logFileName); 61 } 62 }; 63 64 public static void cleanLogs() { 65 for (File log : currentDirectory.listFiles(logFilter)) { 66 if (!log.delete()) { 67 throw new Error("Unable to delete " + log.getAbsolutePath()); 68 } 69 } 70 } 71 72 public static void runTest(int numberOfFiles) throws Exception { 73 74 ArrayList<String> args = new ArrayList(); 75 String[] logOpts = new String[]{ 76 "-cp", System.getProperty("java.class.path"), 77 "-Xloggc:" + logFileName, 78 "-XX:-DisableExplicitGC", // to sure that System.gc() works 79 "-XX:+PrintGC", "-XX:+PrintGCDetails", "-XX:+UseGCLogFileRotation", 80 "-XX:NumberOfGCLogFiles=" + numberOfFiles, 81 "-XX:GCLogFileSize=" + logFileSizeK + "K", "-Xmx128M"}; 82 // System.getProperty("test.java.opts") is '' if no options is set 83 // need to skip such empty 84 String[] externalVMopts = System.getProperty("test.java.opts").length() == 0 85 ? new String[0] 86 : System.getProperty("test.java.opts").split(" "); 87 args.addAll(Arrays.asList(externalVMopts)); 88 args.addAll(Arrays.asList(logOpts)); 89 args.add(GCLoggingGenerator.class.getName()); 90 args.add(String.valueOf(numberOfFiles * logFileSizeK * 1024)); 91 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(args.toArray(new String[0])); 92 pb.redirectErrorStream(true); 93 pb.redirectOutput(new File(GCLoggingGenerator.class.getName() + ".log")); 94 Process process = pb.start(); 95 int result = process.waitFor(); 96 if (result != 0) { 97 throw new Error("Unexpected exit code = " + result); 98 } 99 File[] logs = currentDirectory.listFiles(logFilter); 100 int smallFilesNumber = 0; 101 for (File log : logs) { 102 if (log.length() < logFileSizeK * 1024) { 103 smallFilesNumber++; 104 } 105 } 106 if (logs.length != numberOfFiles) { 107 throw new Error("There are only " + logs.length + " logs instead " + numberOfFiles); 108 } 109 if (smallFilesNumber > 1) { 110 throw new Error("There should maximum one log with size < " + logFileSizeK + "K"); 111 } 112 } 113 114 public static void main(String[] args) throws Exception { 115 cleanLogs(); 116 runTest(1); 117 cleanLogs(); 118 runTest(3); 119 cleanLogs(); 120 } 121 }