1 files changed, 35 insertions, 0 deletions
diff --git a/yolean/src/main/java/com/yahoo/yolean/concurrent/ConcurrentResourcePool.java b/yolean/src/main/java/com/yahoo/yolean/concurrent/ConcurrentResourcePool.java
new file mode 100644
index 00000000000..5e7788e6e20
--- /dev/null
+++ b/yolean/src/main/java/com/yahoo/yolean/concurrent/ConcurrentResourcePool.java
@@ -0,0 +1,35 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.yolean.concurrent;
+
+import com.yahoo.yolean.concurrent.ResourceFactory;
+
+import java.util.Iterator;
+import java.util.Queue;
+import java.util.concurrent.ConcurrentLinkedQueue;
+
+/**
+ * @author baldersheim
+ */
+public class ConcurrentResourcePool<T> implements Iterable<T> {
+
+    private final Queue<T> pool = new ConcurrentLinkedQueue<>();
+    private final ResourceFactory<T> factory;
+
+    public ConcurrentResourcePool(ResourceFactory<T> factory) {
+        this.factory = factory;
+    }
+
+    public final T alloc() {
+        final T e = pool.poll();
+        return e != null ? e : factory.create();
+    }
+
+    public final void free(T e) {
+        pool.offer(e);
+    }
+
+    @Override
+    public Iterator<T> iterator() {
+        return pool.iterator();
+    }
+}