1 /*
2  * Copyright (C) 2013 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef ANDROID_HWUI_TASK_H
18 #define ANDROID_HWUI_TASK_H
19 
20 #include <utils/RefBase.h>
21 #include <utils/Trace.h>
22 
23 #include "Future.h"
24 
25 namespace android {
26 namespace uirenderer {
27 
28 class TaskBase: public RefBase {
29 public:
TaskBase()30     TaskBase() { }
~TaskBase()31     virtual ~TaskBase() { }
32 };
33 
34 template<typename T>
35 class Task: public TaskBase {
36 public:
Task()37     Task(): mFuture(new Future<T>()) { }
~Task()38     virtual ~Task() { }
39 
getResult()40     T getResult() const {
41         ScopedTrace tracer(ATRACE_TAG_VIEW, "waitForTask");
42         return mFuture->get();
43     }
44 
setResult(T result)45     void setResult(T result) {
46         mFuture->produce(result);
47     }
48 
49 protected:
future()50     const sp<Future<T> >& future() const {
51         return mFuture;
52     }
53 
54 private:
55     sp<Future<T> > mFuture;
56 };
57 
58 }; // namespace uirenderer
59 }; // namespace android
60 
61 #endif // ANDROID_HWUI_TASK_H
62