1 files changed, 36 insertions, 0 deletions
diff --git a/library/src/com/bumptech/glide/resize/bitmap_recycle/BaseKeyPool.java b/library/src/com/bumptech/glide/resize/bitmap_recycle/BaseKeyPool.java
new file mode 100644
index 00000000..186850b8
--- /dev/null
+++ b/library/src/com/bumptech/glide/resize/bitmap_recycle/BaseKeyPool.java
@@ -0,0 +1,36 @@
+package com.bumptech.glide.resize.bitmap_recycle;
+
+import android.os.Build;
+
+import java.util.ArrayDeque;
+import java.util.LinkedList;
+import java.util.Queue;
+
+abstract class BaseKeyPool<T extends Poolable> {
+    private static final int MAX_SIZE = 20;
+    private final Queue<T> keyPool;
+
+    public BaseKeyPool() {
+        if (Build.VERSION.SDK_INT >= 9) {
+            keyPool = new ArrayDeque<T>(MAX_SIZE);
+        } else {
+            keyPool = new LinkedList<T>();
+        }
+    }
+
+    protected T get() {
+        T result = keyPool.poll();
+        if (result == null) {
+            result = create();
+        }
+        return result;
+    }
+
+    public void offer(T key) {
+        if (keyPool.size() < MAX_SIZE) {
+            keyPool.offer(key);
+        }
+    }
+
+    protected abstract T create();
+}