mirror of https://gitee.com/bigwinds/arangodb
108 lines
3.4 KiB
C++
108 lines
3.4 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// @brief tasks used to handle asynchronous events
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2004-2012 triagens GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is triAGENS GmbH, Cologne, Germany
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///
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/// @author Dr. Frank Celler
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/// @author Achim Brandt
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/// @author Copyright 2008-2012, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#ifndef TRIAGENS_SCHEDULER_ASYNC_TASK_H
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#define TRIAGENS_SCHEDULER_ASYNC_TASK_H 1
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#include "Scheduler/Task.h"
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namespace triagens {
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namespace rest {
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////////////////////////////////////////////////////////////////////////////////
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/// @brief task used to handle asyncs
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////////////////////////////////////////////////////////////////////////////////
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class AsyncTask : virtual public Task {
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public:
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////////////////////////////////////////////////////////////////////////////////
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/// @brief constructs a new task
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////////////////////////////////////////////////////////////////////////////////
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AsyncTask ();
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public:
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////////////////////////////////////////////////////////////////////////////////
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/// @brief signals the task
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///
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/// Note that this method can only be called after the task has been registered.
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////////////////////////////////////////////////////////////////////////////////
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void signal ();
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protected:
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////////////////////////////////////////////////////////////////////////////////
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/// @brief destructor
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////////////////////////////////////////////////////////////////////////////////
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~AsyncTask ();
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protected:
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////////////////////////////////////////////////////////////////////////////////
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/// @brief handles the signal
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////////////////////////////////////////////////////////////////////////////////
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virtual bool handleAsync () = 0;
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protected:
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////////////////////////////////////////////////////////////////////////////////
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/// {@inheritDoc}
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////////////////////////////////////////////////////////////////////////////////
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bool setup (Scheduler*, EventLoop);
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////////////////////////////////////////////////////////////////////////////////
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/// {@inheritDoc}
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////////////////////////////////////////////////////////////////////////////////
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void cleanup ();
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////////////////////////////////////////////////////////////////////////////////
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/// {@inheritDoc}
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////////////////////////////////////////////////////////////////////////////////
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bool handleEvent (EventToken, EventType);
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protected:
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////////////////////////////////////////////////////////////////////////////////
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/// @brief event for async signals
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////////////////////////////////////////////////////////////////////////////////
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EventToken watcher;
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};
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}
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}
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#endif
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