diff options
author | Sven Gothel <[email protected]> | 2010-09-30 05:18:06 +0300 |
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committer | Sven Gothel <[email protected]> | 2011-06-11 01:52:55 +0200 |
commit | dcaf8a1c8736b3fd3748b53e5c67949ad0404dcd (patch) | |
tree | af75be76ec5a158f111c8bddffff272599469c3f /src/junit/com/jogamp/test | |
parent | 213c1a1f934bfa516d4870c5c67baafbaf0bdc44 (diff) |
Newt/AWT: Add singleton test instance lock for all AWT Robot tests, otherwise multiple parallel tests will render the result invalid
Diffstat (limited to 'src/junit/com/jogamp/test')
-rw-r--r-- | src/junit/com/jogamp/test/junit/util/SingletonInstance.java | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/src/junit/com/jogamp/test/junit/util/SingletonInstance.java b/src/junit/com/jogamp/test/junit/util/SingletonInstance.java new file mode 100644 index 0000000..5277511 --- /dev/null +++ b/src/junit/com/jogamp/test/junit/util/SingletonInstance.java @@ -0,0 +1,140 @@ +/** + * Copyright 2010 JogAmp Community. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, are + * permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this list of + * conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, this list + * of conditions and the following disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * The views and conclusions contained in the software and documentation are those of the + * authors and should not be interpreted as representing official policies, either expressed + * or implied, of JogAmp Community. + */ + +package com.jogamp.test.junit.util; + +import java.io.File; +import java.io.IOException; +import java.io.RandomAccessFile; +import java.nio.channels.FileLock; + +public class SingletonInstance { + + static final boolean DEBUG = true; + static final String temp_file_path; + + static { + String s = null; + try { + File tmpFile = File.createTempFile("TEST", "tst"); + String absTmpFile = tmpFile.getCanonicalPath(); + tmpFile.delete(); + s = absTmpFile.substring(0, absTmpFile.lastIndexOf(File.separator)); + } catch (IOException ex) { + ex.printStackTrace(); + } + temp_file_path = s; + } + + public static String getCanonicalTempPath() { + return temp_file_path; + } + + public static String getCanonicalTempLockFilePath(String basename) { + return getCanonicalTempPath() + File.separator + basename; + } + + public SingletonInstance(String lockFileBasename) { + this.file = new File ( getCanonicalTempLockFilePath ( lockFileBasename ) ); + } + + public SingletonInstance(File lockFile) { + this.file = lockFile ; + } + + public synchronized void lock(long timeout_ms, long poll_ms) { + long i=0; + try { + do { + if(tryLock()) { + return; + } + i++; + Thread.sleep(poll_ms); + } while ( i < timeout_ms / poll_ms ) ; + } catch ( InterruptedException ie ) { + throw new RuntimeException(ie); + } + throw new RuntimeException("SingletonInstance couldn't get lock within "+timeout_ms+"ms"); + } + + public synchronized boolean tryLock() { + try { + randomAccessFile = new RandomAccessFile(file, "rw"); + fileLock = randomAccessFile.getChannel().tryLock(); + + if (fileLock != null) { + //final File f_file = file; + //final RandomAccessFile f_randomAccessFile = randomAccessFile; + //final FileLock f_fileLock = fileLock; + Runtime.getRuntime().addShutdownHook(new Thread() { + public void run() { + unlock(); + } + }); + locked = true; + if(DEBUG) { + System.err.println("Locked " + file); + } + return true; + } + } catch (Exception e) { + System.err.println("Unable to create and/or lock file: " + file); + e.printStackTrace(); + } + return false; + } + + public synchronized boolean unlock() { + if(locked) { + try { + fileLock.release(); + randomAccessFile.close(); + file.delete(); + return true; + } catch (Exception e) { + System.err.println("Unable to remove lock file: " + file); + e.printStackTrace(); + } finally { + fileLock = null; + randomAccessFile = null; + locked = false; + } + } + return false; + } + + public synchronized boolean isLocked() { + return locked; + } + + File file = null; + RandomAccessFile randomAccessFile = null; + FileLock fileLock = null; + boolean locked = false; +} |