| /* |
| * Copyright (c) 2015, 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. |
| * |
| * 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. |
| */ |
| |
| /* |
| * @test |
| * @bug 8030099 |
| * @summary Memory usage of java process increases |
| after calling Win32ShellFolder:listFiles |
| multiple times on some directory with |
| large number of files/folders |
| * @modules java.desktop/sun.awt.shell |
| * @requires (os.family == "windows") |
| * @run main/timeout=1000 ShellFolderMemoryLeak |
| */ |
| import java.io.BufferedReader; |
| import java.io.File; |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| import sun.awt.shell.ShellFolder; |
| |
| public class ShellFolderMemoryLeak { |
| |
| private final static String tempDir = System.getProperty("java.io.tmpdir"); |
| private static Process process; |
| public static void main(String[] args) throws Exception { |
| if (args.length == 0) { |
| boolean testResultParallel |
| = createChildProcessWithParallelCollector(); |
| String result = ""; |
| if (!testResultParallel) { |
| result = "Test failed with Parallel collector"; |
| } |
| boolean testResultDefault |
| = createChildProcessWithDefaultCollector(); |
| if (!testResultDefault && !testResultParallel) { |
| result += " and with default collector both."; |
| } else if (!testResultDefault) { |
| result = "Test failed with default collector"; |
| } |
| if (!"".equals(result)) { |
| throw new RuntimeException(result); |
| } |
| } else { |
| testListFile(args[args.length - 1]); |
| } |
| } |
| |
| public static boolean createChildProcessWithDefaultCollector() |
| throws Exception { |
| String testDirectory = "TestDirectory1"; |
| testDirectory = tempDir + testDirectory +File.separator; |
| createTestData(testDirectory); |
| return runProcess("", testDirectory); |
| } |
| |
| public static boolean createChildProcessWithParallelCollector() |
| throws Exception { |
| String testDirectory = "TestDirectory2"; |
| testDirectory = tempDir + testDirectory +File.separator; |
| createTestData(testDirectory); |
| return runProcess(" -XX:+UseParallelGC", testDirectory); |
| } |
| |
| public static boolean runProcess(String arg1, String arg2) throws Exception { |
| String javaPath = System.getProperty("java.home"); |
| String classPathDir = System.getProperty("java.class.path"); |
| |
| //creating java process which run same class with different Xmx value |
| String command = javaPath + File.separator + "bin" + File.separator |
| + "java -Xmx256M" + arg1 + " -cp " |
| + classPathDir |
| + " --add-exports=java.desktop/sun.awt.shell=ALL-UNNAMED" |
| + " ShellFolderMemoryLeak " + arg2; |
| process = Runtime.getRuntime().exec(command); |
| BufferedReader input = null; |
| InputStream errorStream = null; |
| String line = null; |
| try { |
| int exitVal = process.waitFor(); |
| input = new BufferedReader(new InputStreamReader( |
| process.getInputStream())); |
| while ((line = input.readLine()) != null) { |
| } |
| errorStream = process.getErrorStream(); |
| if (checkExceptions(errorStream) || exitVal != 0) { |
| return false; |
| } |
| } catch (IllegalThreadStateException e) { |
| throw new RuntimeException(e); |
| } finally { |
| if (input != null) { |
| input.close(); |
| } |
| if (errorStream != null) { |
| errorStream.close(); |
| } |
| process.destroy(); |
| } |
| return true; |
| } |
| |
| public static boolean checkExceptions(InputStream in) throws IOException { |
| String tempString; |
| int count = in.available(); |
| boolean exception = false; |
| while (count > 0) { |
| byte[] b = new byte[count]; |
| in.read(b); |
| tempString = new String(b); |
| if (!exception) { |
| exception = tempString.contains("RunTimeException"); |
| } |
| count = in.available(); |
| } |
| return exception; |
| } |
| |
| private static void createTestData(String testDirectory) { |
| String folder = "folder_"; |
| File testFolder = new File(testDirectory); |
| if (testFolder.exists()) { |
| clearTestData(testDirectory); |
| } else { |
| if (testFolder.mkdir()) { |
| for (int inx = 0; inx < 100; inx++) { |
| new File(testFolder + File.separator + folder + inx).mkdir(); |
| } |
| } else { |
| throw new RuntimeException("Failed to create testDirectory"); |
| } |
| } |
| } |
| |
| public static void deleteDirectory(File file) |
| throws IOException { |
| |
| if (file.isDirectory()) { |
| if (file.list().length == 0) { |
| file.delete(); |
| } else { |
| String files[] = file.list(); |
| for (String temp : files) { |
| File fileDelete = new File(file, temp); |
| deleteDirectory(fileDelete); |
| } |
| if (file.list().length == 0) { |
| file.delete(); |
| } |
| } |
| } |
| } |
| |
| private static void testListFile(String testDirectory) { |
| try { |
| int mb = 1024 * 1024; |
| ShellFolder folder = ShellFolder.getShellFolder( |
| new File(testDirectory)); |
| Runtime instance = Runtime.getRuntime(); |
| |
| //Memory used before calling listFiles |
| long startmem = instance.totalMemory() - instance.freeMemory(); |
| long start = System.currentTimeMillis(); |
| long endmem = 0; |
| |
| //Calling listFiles for 5 minutes with sleep of 10 ms. |
| while ((System.currentTimeMillis() - start) < 300000) { |
| try { |
| folder.listFiles(); |
| Thread.sleep(10); |
| endmem = instance.totalMemory() - instance.freeMemory(); |
| } catch (InterruptedException ex) { |
| Logger.getLogger(ShellFolderMemoryLeak.class.getName()) |
| .log(Level.SEVERE, "InterruptedException", ex); |
| } |
| } |
| |
| //Total increase in memory after 5 minutes |
| long result = (endmem - startmem) / mb; |
| |
| if (result > 100) { |
| clearTestData(testDirectory); |
| throw new RuntimeException("Test Failed"); |
| } |
| clearTestData(testDirectory); |
| } catch (FileNotFoundException ex) { |
| if(process != null && process.isAlive()) { |
| process.destroy(); |
| } |
| Logger.getLogger(ShellFolderMemoryLeak.class.getName()) |
| .log(Level.SEVERE, "File Not Found Exception", ex); |
| } |
| } |
| |
| private static void clearTestData(String testDirectory) { |
| File testFolder = new File(testDirectory); |
| try { |
| deleteDirectory(testFolder); |
| } catch (IOException ex) { |
| Logger.getLogger(ShellFolderMemoryLeak.class.getName()) |
| .log(Level.SEVERE, "Unable to delete files", ex); |
| } |
| } |
| } |