Mbed OS Reference | PolledQueue.h Source File

 /*
  * Copyright (c) 2018-2019, Arm Limited and affiliates.
  * SPDX-License-Identifier: Apache-2.0
  *
  * 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 POLLED_QUEUE_H
 #define POLLED_QUEUE_H
 
 #include "usb/internal/TaskQueue.h"
 #include "platform/Callback.h"
 #include "LinkedList.h"
 
 namespace events {
 /**
  * \defgroup drivers_PolledQueue PolledQueue class
  * \ingroup drivers-internal-api-usb
  * @{
  */
 
 /** PolledQueue
  *
  * This class is an implementation of TaskQueue which is
  * processed synchronously by calls to dispatch.
  */
 class PolledQueue: public TaskQueue {
 public:
 
     /** Create a PolledQueue
      *
      *  Create an event queue.
      *
      *  @param cb Callback called when dispatch needs to be called
      */
     PolledQueue(mbed::Callback<void()> cb = nullptr);
 
     virtual ~PolledQueue();
 
     virtual void post(TaskBase *event);
 
     virtual void cancel(TaskBase *event);
 
     /**
      * Process all the events in this queue
      */
     void dispatch();
 
     /**
      * Attach a callback indicating that this queue needs to be processed
      *
      * @param cb Callback called when dispatch needs to be called
      */
     void attach(mbed::Callback<void()> cb);
 
 protected:
 
     mbed::Callback<void()> _cb;
     LinkedList<TaskBase> _list;
 
 };
 
 /** @}*/
 
 }
 #endif
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