--- a/jdk/test/lib/testlibrary/jdk/testlibrary/FileUtils.java Sat May 27 12:52:18 2017 +0530
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,230 +0,0 @@
-/*
- * Copyright (c) 2017, 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.
- */
-
-package jdk.testlibrary;
-
-import java.io.IOException;
-import java.nio.file.DirectoryNotEmptyException;
-import java.nio.file.FileVisitResult;
-import java.nio.file.Files;
-import java.nio.file.NoSuchFileException;
-import java.nio.file.Path;
-import java.nio.file.SimpleFileVisitor;
-import java.nio.file.attribute.BasicFileAttributes;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.concurrent.TimeUnit;
-
-
-/**
- * Common library for various test file utility functions.
- */
-public final class FileUtils {
-
- private static final boolean isWindows =
- System.getProperty("os.name").startsWith("Windows");
- private static final int RETRY_DELETE_MILLIS = isWindows ? 500 : 0;
- private static final int MAX_RETRY_DELETE_TIMES = isWindows ? 15 : 0;
-
- /**
- * Deletes a file, retrying if necessary.
- *
- * @param path the file to delete
- *
- * @throws NoSuchFileException
- * if the file does not exist (optional specific exception)
- * @throws DirectoryNotEmptyException
- * if the file is a directory and could not otherwise be deleted
- * because the directory is not empty (optional specific exception)
- * @throws IOException
- * if an I/O error occurs
- */
- public static void deleteFileWithRetry(Path path)
- throws IOException
- {
- try {
- deleteFileWithRetry0(path);
- } catch (InterruptedException x) {
- throw new IOException("Interrupted while deleting.", x);
- }
- }
-
- /**
- * Deletes a file, retrying if necessary.
- * No exception thrown if file doesn't exist.
- *
- * @param path the file to delete
- *
- * @throws NoSuchFileException
- * if the file does not exist (optional specific exception)
- * @throws DirectoryNotEmptyException
- * if the file is a directory and could not otherwise be deleted
- * because the directory is not empty (optional specific exception)
- * @throws IOException
- * if an I/O error occurs
- */
- public static void deleteFileIfExistsWithRetry(Path path)
- throws IOException
- {
- try {
- if(Files.exists(path))
- deleteFileWithRetry0(path);
- } catch (InterruptedException x) {
- throw new IOException("Interrupted while deleting.", x);
- }
- }
-
- private static void deleteFileWithRetry0(Path path)
- throws IOException, InterruptedException
- {
- int times = 0;
- IOException ioe = null;
- while (true) {
- try {
- Files.delete(path);
- while (Files.exists(path)) {
- times++;
- if (times > MAX_RETRY_DELETE_TIMES)
- throw new IOException("File still exists after " + times + " waits.");
- Thread.sleep(RETRY_DELETE_MILLIS);
- }
- break;
- } catch (NoSuchFileException | DirectoryNotEmptyException x) {
- throw x;
- } catch (IOException x) {
- // Backoff/retry in case another process is accessing the file
- times++;
- if (ioe == null)
- ioe = x;
- else
- ioe.addSuppressed(x);
-
- if (times > MAX_RETRY_DELETE_TIMES)
- throw ioe;
- Thread.sleep(RETRY_DELETE_MILLIS);
- }
- }
- }
-
- /**
- * Deletes a directory and its subdirectories, retrying if necessary.
- *
- * @param dir the directory to delete
- *
- * @throws IOException
- * If an I/O error occurs. Any such exceptions are caught
- * internally. If only one is caught, then it is re-thrown.
- * If more than one exception is caught, then the second and
- * following exceptions are added as suppressed exceptions of the
- * first one caught, which is then re-thrown.
- */
- public static void deleteFileTreeWithRetry(Path dir)
- throws IOException
- {
- IOException ioe = null;
- final List<IOException> excs = deleteFileTreeUnchecked(dir);
- if (!excs.isEmpty()) {
- ioe = excs.remove(0);
- for (IOException x : excs)
- ioe.addSuppressed(x);
- }
- if (ioe != null)
- throw ioe;
- }
-
- public static List<IOException> deleteFileTreeUnchecked(Path dir) {
- final List<IOException> excs = new ArrayList<>();
- try {
- java.nio.file.Files.walkFileTree(dir, new SimpleFileVisitor<Path>() {
- @Override
- public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) {
- try {
- deleteFileWithRetry0(file);
- } catch (IOException x) {
- excs.add(x);
- } catch (InterruptedException x) {
- excs.add(new IOException("Interrupted while deleting.", x));
- return FileVisitResult.TERMINATE;
- }
- return FileVisitResult.CONTINUE;
- }
- @Override
- public FileVisitResult postVisitDirectory(Path dir, IOException exc) {
- try {
- deleteFileWithRetry0(dir);
- } catch (IOException x) {
- excs.add(x);
- } catch (InterruptedException x) {
- excs.add(new IOException("Interrupted while deleting.", x));
- return FileVisitResult.TERMINATE;
- }
- return FileVisitResult.CONTINUE;
- }
- @Override
- public FileVisitResult visitFileFailed(Path file, IOException exc) {
- excs.add(exc);
- return FileVisitResult.CONTINUE;
- }
- });
- } catch (IOException x) {
- excs.add(x);
- }
- return excs;
- }
-
- /**
- * Checks whether all file systems are accessible. This is performed
- * by checking free disk space on all mounted file systems via a
- * separate, spawned process. File systems are considered to be
- * accessible if this process completes successfully before a given
- * fixed duration has elapsed.
- *
- * @implNote On Unix this executes the {@code df} command in a separate
- * process and on Windows always returns {@code true}.
- */
- public static boolean areFileSystemsAccessible() throws IOException {
- boolean areFileSystemsAccessible = true;
- if (!isWindows) {
- // try to check whether 'df' hangs
- System.out.println("\n--- df output ---");
- System.out.flush();
- Process proc = new ProcessBuilder("df").inheritIO().start();
- try {
- proc.waitFor(90, TimeUnit.SECONDS);
- } catch (InterruptedException ignored) {
- }
- try {
- int exitValue = proc.exitValue();
- if (exitValue != 0) {
- System.err.printf("df process exited with %d != 0%n",
- exitValue);
- areFileSystemsAccessible = false;
- }
- } catch (IllegalThreadStateException ignored) {
- System.err.println("df command apparently hung");
- areFileSystemsAccessible = false;
- }
- }
- return areFileSystemsAccessible;
- }
-}