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/*
* 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");}
}
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