| /* |
| * Copyright (c) 2006, 2012, 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 6423026 |
| * @summary Check that it is possible to open more than 2,048 zip files on |
| * Windows. |
| */ |
| |
| import java.util.zip.ZipEntry; |
| import java.util.zip.ZipFile; |
| import java.util.zip.ZipOutputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.File; |
| import java.io.FileOutputStream; |
| |
| public class ManyZipFiles { |
| static final int numFiles = 3000; |
| |
| public static void realMain(String[] args) throws Throwable { |
| // Linux does not yet allow opening this many files; Solaris |
| // 8 requires an explicit allocation of more file descriptors |
| // to succeed. Since this test is written to check for a |
| // Windows capability it is much simpler to only run it |
| // on that platform. |
| String osName = System.getProperty("os.name"); |
| if (!(osName.startsWith("Windows"))) { |
| return; |
| } |
| |
| // Create some zip data |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| try (ZipOutputStream zos = new ZipOutputStream(baos)) { |
| ZipEntry ze = new ZipEntry("test"); |
| zos.putNextEntry(ze); |
| byte[] hello = "hello, world".getBytes("ASCII"); |
| zos.write(hello, 0, hello.length); |
| zos.closeEntry(); |
| zos.finish(); |
| } |
| byte[] data = baos.toByteArray(); |
| |
| ZipFile zips[] = new ZipFile[numFiles]; |
| |
| try { |
| // Create a directory for zip files created below |
| File tmpdir = new File( |
| System.getProperty("java.io.tmpdir") |
| + File.separator + "ManyZipFiles"); |
| if (tmpdir.exists() && !tmpdir.isDirectory()) { |
| fail(tmpdir.getAbsolutePath() |
| + " already exists but is not a directory"); |
| return; |
| } |
| if (!tmpdir.exists()) { |
| if (!tmpdir.mkdirs()) { |
| fail("Couldn't create directory " |
| + tmpdir.getAbsolutePath() + " for test files"); |
| return; |
| } |
| } else if (!tmpdir.canWrite()) { |
| fail("Don't have write access for directory " |
| + tmpdir.getAbsolutePath() + " for test files"); |
| return; |
| } |
| tmpdir.deleteOnExit(); |
| |
| // Create and then open a large number of zip files |
| for (int i = 0; i < numFiles; i++) { |
| File f = File.createTempFile("test", ".zip", tmpdir); |
| f.deleteOnExit(); |
| try (FileOutputStream fos = new FileOutputStream(f)) { |
| fos.write(data, 0, data.length); |
| } |
| try { |
| zips[i] = new ZipFile(f); |
| } catch (Throwable t) { |
| fail("Failed to open zip file #" + i + " named " |
| + zips[i].getName()); |
| throw t; |
| } |
| } |
| } finally { |
| // This finally block is due to bug 4171239. On Windows, if the |
| // file is still open at the end of the VM, deleteOnExit won't |
| // take place. "new ZipFile(...)" opens the zip file, so we have |
| // to explicitly close those opened above. This finally block can |
| // be removed when 4171239 is fixed. See also 6357433, against which |
| // 4171239 was closed as a duplicate. |
| for (int i = 0; i < numFiles; i++) { |
| if (zips[i] != null) { |
| try { |
| zips[i].close(); |
| } catch (Throwable t) { |
| fail("At zip[" + i + "] named " + zips[i].getName() |
| + " caught " + t); |
| } |
| } |
| } |
| } |
| pass(); |
| } |
| |
| //--------------------- Infrastructure --------------------------- |
| static volatile int passed = 0, failed = 0; |
| static void pass() {passed++;} |
| static void fail() {failed++; Thread.dumpStack();} |
| static void fail(String msg) {System.out.println(msg); fail();} |
| static void unexpected(Throwable t) {failed++; t.printStackTrace();} |
| static void check(boolean cond) {if (cond) pass(); else fail();} |
| static void equal(Object x, Object y) { |
| if (x == null ? y == null : x.equals(y)) pass(); |
| else fail(x + " not equal to " + y);} |
| public static void main(String[] args) throws Throwable { |
| try {realMain(args);} catch (Throwable t) {unexpected(t);} |
| System.out.println("\nPassed = " + passed + " failed = " + failed); |
| if (failed > 0) throw new AssertionError("Some tests failed");} |
| } |