59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
#ifndef CONNECTION_HANDLER_INCLUDED
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#define CONNECTION_HANDLER_INCLUDED
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/* Copyright (c) 2007, 2013, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */
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#include "my_global.h" // uint
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class THD;
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class Channel_info;
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class Connection_handler_manager;
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/**
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This abstract base class represents how connections are processed,
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most importantly how they map to OS threads.
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*/
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class Connection_handler
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{
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protected:
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friend class Connection_handler_manager;
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Connection_handler() {}
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virtual ~Connection_handler() {}
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/**
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Add a connection.
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@param channel_info Pointer to the Channel_info object.
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@note If this function is successful (returns false), the ownership of
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channel_info is transferred. Otherwise the caller is responsible for
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its destruction.
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@return true if processing of the new connection failed, false otherwise.
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*/
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virtual bool add_connection(Channel_info* channel_info) = 0;
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/**
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@return Maximum number of threads that can be created
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by this connection handler.
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*/
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virtual uint get_max_threads() const = 0;
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};
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#endif // CONNECTION_HANDLER_INCLUDED
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