upload android base code part6

android/system/vold/TrimTask.h

@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+#ifndef ANDROID_VOLD_TRIM_TASK_H
+#define ANDROID_VOLD_TRIM_TASK_H
+
+#include "Utils.h"
+
+#include <thread>
+#include <list>
+
+namespace android {
+namespace vold {
+
+class TrimTask {
+public:
+    explicit TrimTask(int flags);
+    virtual ~TrimTask();
+
+    enum Flags {
+        kDeepTrim = 1 << 0,
+        kBenchmarkAfter = 1 << 1,
+    };
+
+    void start();
+
+private:
+    int mFlags;
+    std::list<std::string> mPaths;
+    std::thread mThread;
+
+    void addFromFstab();
+    void run();
+
+    DISALLOW_COPY_AND_ASSIGN(TrimTask);
+};
+
+}  // namespace vold
+}  // namespace android
+
+#endif