86 lines
2.4 KiB
C++
86 lines
2.4 KiB
C++
/*
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Copyright (c) 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
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef SQL_CHANNEL_INFO_INCLUDED
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#define SQL_CHANNEL_INFO_INCLUDED
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#include "my_global.h" // uint
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#include "my_sys.h" // my_micro_time
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class THD;
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typedef struct st_vio Vio;
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/**
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This abstract base class represents connection channel information
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about a new connection. Its subclasses encapsulate differences
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between different connection channel types.
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Currently we support local and TCP/IP sockets (all platforms),
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named pipes and shared memory (Windows only).
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*/
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class Channel_info
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{
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ulonglong prior_thr_create_utime;
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protected:
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/**
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Create and initialize a Vio object.
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@retval return a pointer to the initialized a vio object.
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*/
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virtual Vio* create_and_init_vio() const = 0;
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Channel_info()
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: prior_thr_create_utime(0)
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{ }
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public:
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virtual ~Channel_info() {}
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/**
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Instantiate and initialize THD object and vio.
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@return
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@retval
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THD* pointer to initialized THD object.
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@retval
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NULL THD object allocation fails.
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*/
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virtual THD* create_thd() = 0;
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/**
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Send error back to the client and close the channel.
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@param errorcode code indicating type of error.
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@param error operating system specific error code.
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@param senderror true if the error need to be sent to
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client else false.
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*/
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virtual void send_error_and_close_channel(uint errorcode,
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int error,
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bool senderror) = 0;
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ulonglong get_prior_thr_create_utime() const
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{ return prior_thr_create_utime; }
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void set_prior_thr_create_utime()
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{ prior_thr_create_utime= my_micro_time(); }
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};
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#endif // SQL_CHANNEL_INFO_INCLUDED.
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