58     static FilenameFilter logFilter = new FilenameFilter() {
  59         @Override
  60         public boolean accept(File dir, String name) {
  61             return name.startsWith(logFileName);
  62         }
  63     };
  64 
  65     public static void cleanLogs() {
  66         for (File log : currentDirectory.listFiles(logFilter)) {
  67             if (!log.delete()) {
  68                 throw new Error("Unable to delete " + log.getAbsolutePath());
  69             }
  70         }
  71     }
  72 
  73     public static void runTest(int numberOfFiles) throws Exception {
  74 
  75         ArrayList<String> args = new ArrayList();
  76         String[] logOpts = new String[]{
  77             "-cp", System.getProperty("java.class.path"),
  78             "-Xlog:gc=debug:" + logFileName + "::filesize=" + logFileSizeK + ",filecount=" + numberOfFiles,
  79             "-XX:-DisableExplicitGC", // to ensure that System.gc() works
  80             "-Xmx128M"};
  81         // System.getProperty("test.java.opts") is '' if no options is set
  82         // need to skip such empty
  83         String[] externalVMopts = System.getProperty("test.java.opts").length() == 0
  84                 ? new String[0]
  85                 : System.getProperty("test.java.opts").split(" ");
  86         args.addAll(Arrays.asList(externalVMopts));
  87         args.addAll(Arrays.asList(logOpts));
  88         args.add(GCLoggingGenerator.class.getName());
  89         args.add(String.valueOf(numberOfFiles * logFileSizeK * 1024));
  90         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(args.toArray(new String[0]));
  91         pb.redirectErrorStream(true);
  92         pb.redirectOutput(new File(GCLoggingGenerator.class.getName() + ".log"));
  93         Process process = pb.start();
  94         int result = process.waitFor();
  95         if (result != 0) {
  96             throw new Error("Unexpected exit code = " + result);
  97         }
  98         File[] logs = currentDirectory.listFiles(logFilter);

  58     static FilenameFilter logFilter = new FilenameFilter() {
  59         @Override
  60         public boolean accept(File dir, String name) {
  61             return name.startsWith(logFileName);
  62         }
  63     };
  64 
  65     public static void cleanLogs() {
  66         for (File log : currentDirectory.listFiles(logFilter)) {
  67             if (!log.delete()) {
  68                 throw new Error("Unable to delete " + log.getAbsolutePath());
  69             }
  70         }
  71     }
  72 
  73     public static void runTest(int numberOfFiles) throws Exception {
  74 
  75         ArrayList<String> args = new ArrayList();
  76         String[] logOpts = new String[]{
  77             "-cp", System.getProperty("java.class.path"),
  78             "-Xlog:gc=debug:" + logFileName + "::filesize=" + logFileSizeK + "k,filecount=" + numberOfFiles,
  79             "-XX:-DisableExplicitGC", // to ensure that System.gc() works
  80             "-Xmx128M"};
  81         // System.getProperty("test.java.opts") is '' if no options is set
  82         // need to skip such empty
  83         String[] externalVMopts = System.getProperty("test.java.opts").length() == 0
  84                 ? new String[0]
  85                 : System.getProperty("test.java.opts").split(" ");
  86         args.addAll(Arrays.asList(externalVMopts));
  87         args.addAll(Arrays.asList(logOpts));
  88         args.add(GCLoggingGenerator.class.getName());
  89         args.add(String.valueOf(numberOfFiles * logFileSizeK * 1024));
  90         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(args.toArray(new String[0]));
  91         pb.redirectErrorStream(true);
  92         pb.redirectOutput(new File(GCLoggingGenerator.class.getName() + ".log"));
  93         Process process = pb.start();
  94         int result = process.waitFor();
  95         if (result != 0) {
  96             throw new Error("Unexpected exit code = " + result);
  97         }
  98         File[] logs = currentDirectory.listFiles(logFilter);