import quincy 17.2.0

[ceph.git] / ceph / src / arrow / java / memory / memory-core / src / main / java / org / apache / arrow / memory / util / AutoCloseableLock.java

diff --git a/ceph/src/arrow/java/memory/memory-core/src/main/java/org/apache/arrow/memory/util/AutoCloseableLock.java b/ceph/src/arrow/java/memory/memory-core/src/main/java/org/apache/arrow/memory/util/AutoCloseableLock.java
new file mode 100644 (file)
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--- /dev/null
+++ b/ceph/src/arrow/java/memory/memory-core/src/main/java/org/apache/arrow/memory/util/AutoCloseableLock.java
@@ -0,0 +1,43 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.arrow.memory.util;
+
+import java.util.concurrent.locks.Lock;
+
+/**
+ * Simple wrapper class that allows Locks to be released via a try-with-resources block.
+ */
+public class AutoCloseableLock implements AutoCloseable {
+
+  private final Lock lock;
+
+  public AutoCloseableLock(Lock lock) {
+    this.lock = lock;
+  }
+
+  public AutoCloseableLock open() {
+    lock.lock();
+    return this;
+  }
+
+  @Override
+  public void close() {
+    lock.unlock();
+  }
+
+}