59 lines
2.6 KiB
C++
59 lines
2.6 KiB
C++
/* Copyright (c) 2015, 2024, 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 designed to work 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 either included with
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the program or referenced in the documentation.
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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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#ifndef MYSQL_SERVICE_THD_EGINE_LOCK_INCLUDED
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#define MYSQL_SERVICE_THD_EGINE_LOCK_INCLUDED
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/**
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@file include/mysql/service_thd_engine_lock.h
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This service provides functions for storage engines to report
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lock related activities.
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*/
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class THD;
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/** @deprecated Please use thd_report_lock_wait(self, wait_for, true) instead.
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@see thd_report_lock_wait
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Call it just when the engine find a transaction should wait another transaction
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to release a row lock.
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@param[in] self The thd session which is waiting for the lock to release
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@param[in] wait_for The session which is holding the lock
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*/
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void thd_report_row_lock_wait(THD *self, THD *wait_for);
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/**
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Call it just when the engine find a transaction should wait another transaction
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to release a lock.
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Interface for Engine to report lock conflict.
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The caller should guarantee self and thd_wait_for does not be freed,
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while it is called.
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@param[in] self The thd session which is waiting for the lock to release
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@param[in] wait_for The session which is holding the lock
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@param[in] may_survive_prepare true: edge MAY remain even after wait_for
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session PREPAREs its transaction,
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false: edge CERTAINLY will be removed before
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or during PREPARE of transaction run
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by the wait_for session.
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*/
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void thd_report_lock_wait(THD *self, THD *wait_for, bool may_survive_prepare);
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#endif
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