93 lines
3.0 KiB
C
93 lines
3.0 KiB
C
/*
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Copyright (c) 2010, 2022, Oracle and/or its affiliates.
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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 SERVICE_THREAD_SCHEDULER_INCLUDED
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#define SERVICE_THREAD_SCHEDULER_INCLUDED
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct Connection_handler_functions;
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struct THD_event_functions;
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extern struct my_thread_scheduler_service {
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int (*connection_handler_set)(struct Connection_handler_functions *,
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struct THD_event_functions *);
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int (*connection_handler_reset)();
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} *my_thread_scheduler_service;
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#ifdef MYSQL_DYNAMIC_PLUGIN
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#define my_connection_handler_set(F, M) \
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my_thread_scheduler_service->connection_handler_set((F), (M))
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#define my_connection_handler_reset() \
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my_thread_scheduler_service->connection_handler_reset()
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#else
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/**
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Instantiates Plugin_connection_handler based on the supplied
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Conection_handler_functions and sets it as the current
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connection handler.
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Also sets the THD_event_functions functions which will
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be called by the server when e.g. begining a wait.
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Remembers the existing connection handler so that it can be restored later.
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@param chf struct with functions to be called when e.g. handling
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new clients.
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@param tef struct with functions to be called when events
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(e.g. lock wait) happens.
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@note Both pointers (i.e. not the structs themselves) will be copied,
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so the structs must not disappear.
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@note We don't support dynamically loading more than one connection handler.
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@retval 1 failure
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@retval 0 success
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*/
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int my_connection_handler_set(struct Connection_handler_functions *chf,
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struct THD_event_functions *tef);
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/**
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Destroys the current connection handler and restores the previous.
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Should only be called after calling my_connection_handler_set().
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@retval 1 failure
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@retval 0 success
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*/
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int my_connection_handler_reset();
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#endif /* MYSQL_DYNAMIC_PLUGIN */
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#ifdef __cplusplus
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}
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#endif
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#endif /* SERVICE_THREAD_SCHEDULER_INCLUDED */
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