95 lines
2.2 KiB
C++
95 lines
2.2 KiB
C++
/*
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* Copyright (c) 2018 MariaDB Corporation Ab
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*
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* Use of this software is governed by the Business Source License included
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* in the LICENSE.TXT file and at www.mariadb.com/bsl11.
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*
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* Change Date: 2022-01-01
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*
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* On the date above, in accordance with the Business Source License, use
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* of this software will be governed by version 2 or later of the General
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* Public License.
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*/
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#pragma once
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#include <maxscale/ccdefs.hh>
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#include <maxbase/worker.hh>
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#include <maxscale/housekeeper.h>
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namespace maxscale
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{
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class MainWorker : public mxb::Worker
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{
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MainWorker(const MainWorker&) = delete;
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MainWorker& operator=(const MainWorker&) = delete;
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public:
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/**
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* Construct the main worker.
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*
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* @note There can be exactly one instance of @c MainWorker.
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*/
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MainWorker();
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~MainWorker();
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/**
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* Does the main worker exist. It is only at startup and shutdown that this
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* function may return false. When MaxScale is running normally, it will
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* always return true.
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*
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* @return True, if the main worker has been created, false otherwise.
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*/
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static bool created();
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/**
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* Returns the main worker.
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*
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* @return The main worker.
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*/
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static MainWorker& get();
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void add_task(const char* zName, TASKFN func, void* pData, int frequency);
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void remove_task(const char* zName);
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void show_tasks(DCB* pDcb) const;
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json_t* tasks_to_json(const char* zhost) const;
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static int64_t ticks();
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private:
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bool pre_run() override;
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void post_run() override;
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void epoll_tick() override;
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struct Task
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{
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public:
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Task(const char* zName, TASKFN func, void* pData, int frequency)
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: name(zName)
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, func(func)
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, pData(pData)
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, frequency(frequency)
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, nextdue(time(0) + frequency)
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, id(0)
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{
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};
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std::string name;
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TASKFN func;
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void* pData;
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int frequency;
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time_t nextdue;
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uint32_t id;
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};
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bool call_task(Worker::Call::action_t action, Task* pTask);
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static bool inc_ticks(Worker::Call::action_t action);
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std::map<std::string, Task> m_tasks_by_name;
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};
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}
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