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      1 /*
      2  * Copyright (C) 2012 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
      5  * use this file except in compliance with the License. You may obtain a copy of
      6  * 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, WITHOUT
     12  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
     13  * License for the specific language governing permissions and limitations under
     14  * the License.
     15  */
     16 
     17 
     18 #ifndef CTSAUDIO_TASKSEQUENTIAL_H
     19 #define CTSAUDIO_TASKSEQUENTIAL_H
     20 
     21 #include <utils/String8.h>
     22 #include <list>
     23 #include "TaskGeneric.h"
     24 
     25 class TaskAsync;
     26 
     27 class TaskSequential: public TaskGeneric {
     28 public:
     29     TaskSequential();
     30     virtual ~TaskSequential();
     31     virtual TaskGeneric::ExecutionResult run();
     32     virtual bool parseAttribute(const android::String8& name, const android::String8& value);
     33     /**
     34      * Queue async task for asynchronous execution (= call complete later)
     35      * If the task is already queued, it will not be queued again ,but will just return true.
     36      */
     37     bool queueAsyncTask(TaskAsync* task);
     38 
     39 private:
     40     /**
     41      * Run all async tasks queued (= call complete) and dequeue them.
     42      * Execution will be continued even for error, and the 1st error result will be returned.
     43      */
     44     TaskGeneric::ExecutionResult runAsyncTasksQueued();
     45 
     46 private:
     47     int mRepeatCount;
     48     android::String8 mIndexName;
     49     int mRepeatIndex;
     50     std::list<TaskAsync*> mAsyncTasks;
     51 };
     52 
     53 
     54 #endif // CTSAUDIO_TASKSEQUENTIAL_H
     55