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134 lines
2.8 KiB
C++
134 lines
2.8 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. 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,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#pragma once
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#include <memory>
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#include <mutex>
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#include <queue>
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#include <string>
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#include <thread>
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#include <unordered_map>
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#include "ResourceMgr.h"
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#include "interface/interfaces.h"
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#include "resource/Resource.h"
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#include "utils/Log.h"
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namespace milvus {
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namespace scheduler {
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class Scheduler : public interface::dumpable {
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public:
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explicit Scheduler(ResourceMgrPtr res_mgr);
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~Scheduler();
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Scheduler(const Scheduler&) = delete;
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Scheduler(Scheduler&&) = delete;
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/*
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* Start worker thread;
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*/
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void
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Start();
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/*
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* Stop worker thread, join it;
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*/
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void
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Stop();
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/*
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* Post event to scheduler event queue;
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*/
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void
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PostEvent(const EventPtr& event);
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json
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Dump() const override;
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private:
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/******** Events ********/
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/*
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* Process start up events;
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*
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* Actions:
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* Pull task from neighbours;
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*/
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void
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OnStartUp(const EventPtr& event);
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/*
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* Process finish task events;
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*
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* Actions:
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* Pull task from neighbours;
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*/
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void
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OnFinishTask(const EventPtr& event);
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/*
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* Process copy completed events;
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*
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* Actions:
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* Mark task source MOVED;
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* Pull task from neighbours;
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*/
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void
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OnLoadCompleted(const EventPtr& event);
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/*
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* Process task table updated events, which happened on task_table->put;
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*
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* Actions:
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* Push task to neighbours;
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*/
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void
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OnTaskTableUpdated(const EventPtr& event);
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private:
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/*
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* Dispatch event to event handler;
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*/
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void
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Process(const EventPtr& event);
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/*
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* Called by worker_thread_;
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*/
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void
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worker_function();
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private:
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bool running_;
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std::unordered_map<uint64_t, std::function<void(EventPtr)>> event_register_;
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ResourceMgrPtr res_mgr_;
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std::queue<EventPtr> event_queue_;
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std::thread worker_thread_;
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std::mutex event_mutex_;
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std::condition_variable event_cv_;
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};
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using SchedulerPtr = std::shared_ptr<Scheduler>;
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} // namespace scheduler
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} // namespace milvus
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