/* -*- tab-width: 4 -*-
*
* Electric(tm) VLSI Design System
*
* File: ConcurrentCollectionFactory.java
*
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
*
* Electric(tm) is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Electric(tm) 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with Electric(tm); see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, Mass 02111-1307, USA.
*/
package com.sun.electric.tool.util.concurrent.utils;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentLinkedQueue;
import com.sun.electric.tool.util.concurrent.datastructures.BDEQueue;
import com.sun.electric.tool.util.concurrent.datastructures.FCQueue;
import com.sun.electric.tool.util.concurrent.datastructures.LockFreeQueue;
import com.sun.electric.tool.util.concurrent.datastructures.LockFreeStack;
import com.sun.electric.tool.util.concurrent.datastructures.UnboundedDEQueue;
/**
* @author Felix Schmidt
*
*/
public class ConcurrentCollectionFactory {
private static final int LOG_CAPACITY = 4;
protected ConcurrentCollectionFactory() {
}
public static <T> ArrayList<T> createArrayList() {
return new ArrayList<T>();
}
/**
* Create a new hash set
*
* @param <T>
* @return HashSet of type T
*/
public static <T> HashSet<T> createHashSet() {
return new HashSet<T>();
}
@SuppressWarnings("unchecked")
public static <T> List<T> createConcurrentList() {
return (List<T>) Collections.synchronizedList(createArrayList());
}
public static <T> ConcurrentLinkedQueue<T> createConcurrentLinkedQueue() {
return new ConcurrentLinkedQueue<T>();
}
public static <T, V> ConcurrentHashMap<T, V> createConcurrentHashMap() {
return new ConcurrentHashMap<T, V>();
}
@SuppressWarnings("unchecked")
public static <T> Set<T> createConcurrentHashSet() {
return (Set<T>) Collections.synchronizedSet(ConcurrentCollectionFactory.createHashSet());
}
public static <T> Set<T> copySetToConcurrent(Set<T> source) {
Set<T> result = ConcurrentCollectionFactory.createConcurrentHashSet();
doCopyCollection(source, result);
return result;
}
public static <T> LinkedList<T> createLinkedList() {
return new LinkedList<T>();
}
public static <T> LockFreeQueue<T> createLockFreeQueue() {
return new LockFreeQueue<T>();
}
public static <T> LockFreeStack<T> createLockFreeStack() {
return new LockFreeStack<T>();
}
/**
* Create a new double ended queue (concurrent).
*/
public static <T> UnboundedDEQueue<T> createUnboundedDoubleEndedQueue() {
return new UnboundedDEQueue<T>(LOG_CAPACITY);
}
/**
* Create a new double ended queue (concurrent).
*/
public static <T> BDEQueue<T> createBoundedDoubleEndedQueue(int capacity) {
return new BDEQueue<T>(capacity);
}
public static <T> FCQueue<T> createFCQueue() {
return new FCQueue<T>();
}
protected static <T> void doCopyCollection(Collection<T> source, Collection<T> dest) {
for (Iterator<T> it = source.iterator(); it.hasNext();) {
dest.add(it.next());
}
}
public static <T> T threadSafeListGet(int index, List<T> list) {
synchronized (list) {
return list.get(index);
}
}
public static <T> T threadSafeListRemove(int index, List<T> list) {
synchronized (list) {
return list.remove(index);
}
}
/**
*
* @param <T>
* @param item
* @param list
*/
public static <T> void threadSafeListAdd(T item, List<T> list) {
synchronized (list) {
list.add(item);
}
}
}