Merge "Create a utils class for executors."

1 files changed, 55 insertions, 0 deletions

diff --git a/java/src/com/android/inputmethod/latin/utils/ExecutorUtils.java b/java/src/com/android/inputmethod/latin/utils/ExecutorUtils.java
new file mode 100644
index 000000000..ee9718ad3
--- /dev/null
+++ b/java/src/com/android/inputmethod/latin/utils/ExecutorUtils.java
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed 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 com.android.inputmethod.latin.utils;
+
+import com.android.inputmethod.annotations.UsedForTesting;
+
+import java.util.concurrent.ConcurrentHashMap;
+
+/**
+ * Utilities to manage executors.
+ */
+public class ExecutorUtils {
+    private static final ConcurrentHashMap<String, PrioritizedSerialExecutor>
+            sExecutorMap = CollectionUtils.newConcurrentHashMap();
+    /**
+     * Gets the executor for the given dictionary name.
+     */
+    public static PrioritizedSerialExecutor getExecutor(final String dictName) {
+        PrioritizedSerialExecutor executor = sExecutorMap.get(dictName);
+        if (executor == null) {
+            synchronized(sExecutorMap) {
+                executor = new PrioritizedSerialExecutor();
+                sExecutorMap.put(dictName, executor);
+            }
+        }
+        return executor;
+    }
+
+    /**
+     * Shutdowns all executors and removes all executors from the executor map for testing.
+     */
+    @UsedForTesting
+    public static void shutdownAllExecutors() {
+        synchronized(sExecutorMap) {
+            for (final PrioritizedSerialExecutor executor : sExecutorMap.values()) {
+                executor.shutdown();
+                sExecutorMap.remove(executor);
+            }
+        }
+    }
+}