Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2009, 2013 Andrew Gvozdev (Quoin Inc.).
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Andrew Gvozdev (Quoin Inc.)
 *******************************************************************************/

import java.io.FileNotFoundException;
import java.io.FileOutputStream;

public class Main {
    /**
     * Workaround for Java problem on Windows with releasing buffers for memory-mapped files.
     *
     * @see "http://stackoverflow.com/questions/3602783/file-access-synchronized-on-java-object"
     * @see "http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6354433"
     * @see "http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4715154"
     * @see "http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4469299"
     */
    private static FileOutputStream getFileOutputStreamWorkaround(java.io.File storeFile)
            throws FileNotFoundException {
        final int maxCount = 10;
        for (int i = 0; i <= maxCount; i++) {
            try {
                // there is no sleep on first round
                Thread.sleep(10 * i);
            } catch (InterruptedException e) {
                // restore interrupted status
                Thread.currentThread().interrupt();
            }
            try {
                return new FileOutputStream(storeFile);
            } catch (FileNotFoundException e) {
                // only apply workaround for the very specific exception
                if (i >= maxCount || !e.getMessage().contains(
                        "The requested operation cannot be performed on a file with a user-mapped section open")) { //$NON-NLS-1$
                    throw e;
                }
                //            CCorePlugin.log(new Status(IStatus.INFO, CCorePlugin.PLUGIN_ID, "Workaround for concurrent access to memory-mapped files applied, attempt " + (i + 1), e)); //$NON-NLS-1$
            }
        }

        // will never get here
        return null;
    }
}