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arangodb/arangod/Dispatcher/DispatcherThread.h

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////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
///
/// 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.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Dr. Frank Celler
/// @author Martin Schoenert
////////////////////////////////////////////////////////////////////////////////
#ifndef ARANGOD_DISPATCHER_DISPATCHER_THREAD_H
#define ARANGOD_DISPATCHER_DISPATCHER_THREAD_H 1
#include "Basics/Thread.h"
namespace arangodb {
namespace rest {
class DispatcherQueue;
class Job;
/////////////////////////////////////////////////////////////////////////////
/// @brief job dispatcher thread
/////////////////////////////////////////////////////////////////////////////
class DispatcherThread : public Thread {
DispatcherThread(DispatcherThread const&) = delete;
DispatcherThread& operator=(DispatcherThread const&) = delete;
friend class Dispatcher;
friend class DispatcherQueue;
public:
static DispatcherThread* current() {
return dynamic_cast<DispatcherThread*>(Thread::CURRENT_THREAD);
}
public:
explicit DispatcherThread(DispatcherQueue*);
~DispatcherThread() {shutdown();}
protected:
void run() override;
void addStatus(arangodb::velocypack::Builder* b) override;
public:
//////////////////////////////////////////////////////////////////////////////
/// @brief indicates that thread is doing a blocking operation
//////////////////////////////////////////////////////////////////////////////
void block();
//////////////////////////////////////////////////////////////////////////////
/// @brief indicates that thread has resumed work
//////////////////////////////////////////////////////////////////////////////
void unblock();
//////////////////////////////////////////////////////////////////////////////
/// @brief do the real work
//////////////////////////////////////////////////////////////////////////////
void handleJob(Job* job);
private:
//////////////////////////////////////////////////////////////////////////////
/// @brief the dispatcher queue
//////////////////////////////////////////////////////////////////////////////
DispatcherQueue* _queue;
};
}
}
#endif