109 lines
3.4 KiB
C++
109 lines
3.4 KiB
C++
/*
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Copyright (c) 2015, 2017, 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, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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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, version 2.0, 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 SHARED_MEMORY_CONNECTION_INCLUDED
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#define SHARED_MEMORY_CONNECTION_INCLUDED
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#include <Windows.h>
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#include <string>
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class Channel_info;
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class THD;
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/**
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This class abstract a shared memory listener to listen for connection
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events that connect via the shared memory.
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*/
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class Shared_mem_listener {
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std::string m_shared_mem_name;
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HANDLE m_connect_file_map;
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char *m_connect_map;
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HANDLE m_connect_named_mutex;
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HANDLE m_event_connect_request;
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HANDLE m_event_connect_answer;
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SECURITY_ATTRIBUTES *m_sa_event;
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SECURITY_ATTRIBUTES *m_sa_mapping;
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int m_connect_number;
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char *m_suffix_pos;
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char *m_temp_buffer;
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HANDLE m_handle_client_file_map;
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char *m_handle_client_map;
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HANDLE m_event_client_wrote;
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HANDLE m_event_client_read; // for transfer data server <-> client
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HANDLE m_event_server_wrote;
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HANDLE m_event_server_read;
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HANDLE m_event_conn_closed;
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void close_shared_mem();
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public:
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/**
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Constructor to create shared memory listener.
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@param shared_memory_base_name pointer to shared memory base name.
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*/
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Shared_mem_listener(const std::string *shared_memory_base_name)
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: m_shared_mem_name(*shared_memory_base_name),
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m_connect_file_map(0),
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m_connect_map(0),
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m_connect_named_mutex(NULL),
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m_event_connect_request(0),
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m_event_connect_answer(0),
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m_sa_event(0),
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m_sa_mapping(0),
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m_temp_buffer(0),
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m_connect_number(1),
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m_handle_client_file_map(0),
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m_handle_client_map(0),
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m_event_client_wrote(0),
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m_event_client_read(0),
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m_event_server_wrote(0),
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m_event_server_read(0),
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m_event_conn_closed(0) {}
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/**
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Set up a listener.
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@retval false listener listener has been setup successfully to listen for
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connect events true failure in setting up the listener.
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*/
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bool setup_listener();
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/**
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The body of the event loop that listen for connection events from clients.
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@retval Channel_info Channel_info object abstracting the connected client
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details for processing this connection.
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*/
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Channel_info *listen_for_connection_event();
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/**
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Close the listener.
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*/
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void close_listener();
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};
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#endif // SHARED_MEMORY_CONNECTION_INCLUDED
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