mirror of https://gitee.com/bigwinds/arangodb
123 lines
3.6 KiB
C++
123 lines
3.6 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// @brief scheduler thread
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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 2010-2011 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 Martin Schoenert
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/// @author Copyright 2009-2011, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#ifndef TRIAGENS_FYN_SCHEDULER_SCHEDULER_THREAD_H
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#define TRIAGENS_FYN_SCHEDULER_SCHEDULER_THREAD_H 1
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#include <Basics/Thread.h>
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#include <Basics/Mutex.h>
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#include "Scheduler/Task.h"
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namespace triagens {
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namespace rest {
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class Scheduler;
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/////////////////////////////////////////////////////////////////////////////
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/// @brief job scheduler thread
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/////////////////////////////////////////////////////////////////////////////
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class SchedulerThread : public basics::Thread, private TaskManager {
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public:
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/////////////////////////////////////////////////////////////////////////
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/// @brief constructs a scheduler thread
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/////////////////////////////////////////////////////////////////////////
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SchedulerThread (Scheduler*, EventLoop, bool defaultLoop);
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public:
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/////////////////////////////////////////////////////////////////////////
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/// @brief begin shutdown sequence
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/////////////////////////////////////////////////////////////////////////
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void beginShutdown ();
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/////////////////////////////////////////////////////////////////////////
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/// @brief registers a task
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/////////////////////////////////////////////////////////////////////////
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void registerTask (Scheduler*, Task*);
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/////////////////////////////////////////////////////////////////////////
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/// @brief unregisters a task
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/////////////////////////////////////////////////////////////////////////
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void unregisterTask (Task*);
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/////////////////////////////////////////////////////////////////////////
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/// @brief destroys a task
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/////////////////////////////////////////////////////////////////////////
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void destroyTask (Task*);
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protected:
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/////////////////////////////////////////////////////////////////////////
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/// {@inheritDoc}
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/////////////////////////////////////////////////////////////////////////
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void run ();
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private:
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enum work_e {
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CLEANUP,
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DESTROY,
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SETUP
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};
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class Work {
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public:
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Work (work_e w, Scheduler* scheduler, Task* task)
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: work(w), scheduler(scheduler), task(task) {
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}
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work_e work;
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Scheduler* scheduler;
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Task* task;
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};
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private:
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Scheduler* scheduler;
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bool defaultLoop;
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EventLoop loop;
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volatile sig_atomic_t stopping;
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basics::Mutex queueLock;
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volatile sig_atomic_t hasWork;
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deque<Work> queue;
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};
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}
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}
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#endif
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