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- using System.Collections.Generic;
- using System.Threading;
-
- namespace Svelto.DataStructures
- {
- public class ThreadSafeQueue<T>
- {
- readonly Queue<T> m_Queue;
-
- readonly ReaderWriterLockSlim LockQ = new ReaderWriterLockSlim();
-
- public ThreadSafeQueue()
- {
- m_Queue = new Queue<T>();
- }
-
- public ThreadSafeQueue(int capacity)
- {
- m_Queue = new Queue<T>(capacity);
- }
-
- public ThreadSafeQueue(IEnumerable<T> collection)
- {
- m_Queue = new Queue<T>(collection);
- }
-
- public IEnumerator<T> GetEnumerator()
- {
- Queue<T> localQ;
-
- LockQ.EnterReadLock();
- try
- {
- localQ = new Queue<T>(m_Queue);
- }
-
- finally
- {
- LockQ.ExitReadLock();
- }
-
- foreach (T item in localQ)
- yield return item;
- }
-
- public void Enqueue(T item)
- {
- LockQ.EnterWriteLock();
- try
- {
- m_Queue.Enqueue(item);
- }
-
- finally
- {
- LockQ.ExitWriteLock();
- }
- }
-
- public T Dequeue()
- {
- LockQ.EnterWriteLock();
- try
- {
- return m_Queue.Dequeue();
- }
-
- finally
- {
- LockQ.ExitWriteLock();
- }
- }
-
- public void EnqueueAll(IEnumerable<T> ItemsToQueue)
- {
- LockQ.EnterWriteLock();
- try
- {
- foreach (T item in ItemsToQueue)
- m_Queue.Enqueue(item);
- }
-
- finally
- {
- LockQ.ExitWriteLock();
- }
- }
-
- public FasterList<T> DequeueAll()
- {
- LockQ.EnterWriteLock();
- try
- {
- FasterList<T> returnList = new FasterList<T>();
-
- while (m_Queue.Count > 0)
- returnList.Add(m_Queue.Dequeue());
-
- return returnList;
- }
-
- finally
- {
- LockQ.ExitWriteLock();
- }
- }
-
- public void DequeueAllInto(FasterList<T> list)
- {
- LockQ.EnterWriteLock();
- try
- {
- while (m_Queue.Count > 0)
- list.Add(m_Queue.Dequeue());
- }
-
- finally
- {
- LockQ.ExitWriteLock();
- }
- }
-
- public void DequeueInto(FasterList<T> list, int count)
- {
- LockQ.EnterWriteLock();
- try
- {
- int originalSize = m_Queue.Count;
- while (m_Queue.Count > 0 && originalSize - m_Queue.Count < count)
- list.Add(m_Queue.Dequeue());
- }
-
- finally
- {
- LockQ.ExitWriteLock();
- }
- }
-
- public FasterList<U> DequeueAllAs<U>() where U:class
- {
- LockQ.EnterWriteLock();
- try
- {
- FasterList<U> returnList = new FasterList<U>();
-
- while (m_Queue.Count > 0)
- returnList.Add(m_Queue.Dequeue() as U);
-
- return returnList;
- }
-
- finally
- {
- LockQ.ExitWriteLock();
- }
- }
-
- public T Peek()
- {
- LockQ.EnterWriteLock();
- try
- {
- T item = default(T);
-
- if (m_Queue.Count > 0)
- item = m_Queue.Peek();
-
- return item;
- }
-
- finally
- {
- LockQ.ExitWriteLock();
- }
- }
-
- public void Clear()
- {
- LockQ.EnterWriteLock();
- try
- {
- m_Queue.Clear();
- }
-
- finally
- {
- LockQ.ExitWriteLock();
- }
- }
-
- public bool TryDequeue(out T item)
- {
- LockQ.EnterWriteLock();
- try
- {
- if (m_Queue.Count > 0)
- {
- item = m_Queue.Dequeue();
-
- return true;
- }
- else
- {
- item = default(T);
-
- return false;
- }
- }
-
- finally
- {
- LockQ.ExitWriteLock();
- }
- }
-
- public int Count
- {
- get
- {
- LockQ.EnterWriteLock();
- try
- {
- return m_Queue.Count;
- }
-
- finally
- {
- LockQ.ExitWriteLock();
- }
- }
- }
- }
- }
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