f66620c89c
Without the member template it is not possible to pass an auto_ptr instantiated with a derived type to post() or broadcast(). The reason is that the conversion constructor and conversion operator of auto_ptr are equally good for that purpose, and hence the compilation ends with an error.
85 lines
1.8 KiB
C++
85 lines
1.8 KiB
C++
#pragma once
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/*
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* Copyright (c) 2016 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: 2019-07-01
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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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#include <maxscale/cppdefs.hh>
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namespace maxscale
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{
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class Worker;
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/**
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* A WorkerTask represents a task to be performed by a Worker.
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*/
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class WorkerTask
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{
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public:
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/**
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* Destructor
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*/
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virtual ~WorkerTask();
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/**
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* @brief Called in the context of a specific worker.
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*
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* @param worker The worker in whose context `execute` is called.
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*
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* @attention As the function is called by a worker, the body of `execute`
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* should execute quickly and not perform any blocking operations.
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*/
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virtual void execute(Worker& worker) = 0;
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};
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/**
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* A WorkerDisposableTask represents a task to be performed by a Worker.
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*
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* When the task has been executed, the instance will automatically be
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* deleted.
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*/
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class WorkerDisposableTask
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{
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public:
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/**
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* Destructor
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*/
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virtual ~WorkerDisposableTask();
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protected:
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/**
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* Constructor
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*/
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WorkerDisposableTask();
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/**
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* @brief Called in the context of a specific worker.
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*
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* @param worker The worker in whose context `execute` is called.
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*
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* @attention As the function is called by a worker, the body of `execute`
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* should execute quickly and not perform any blocking operations.
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*/
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virtual void execute(Worker& worker) = 0;
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private:
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friend class Worker;
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void inc_ref();
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void dec_ref();
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private:
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int32_t m_count;
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};
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}
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