47 lines
1.8 KiB
C++
47 lines
1.8 KiB
C++
/*
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Copyright (c) 2011, 2019, 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 NDB_GLOBAL_SCHEMA_LOCK_H
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#define NDB_GLOBAL_SCHEMA_LOCK_H
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class THD;
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/**
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Locks or unlock the GSL, thus preventing concurrent
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modification to any other object in the cluster
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@param thd Thread context.
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@param lock Indicates whether GSL should be locked or unlocked
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@param is_tablespace Locking for tablespace object
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@param victimized 'true' if locking failed as we were choosen
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as a victim in order to avoid possible deadlocks.
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@return false ok
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@return true error
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*/
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bool ndb_gsl_lock(THD *thd, bool lock, bool is_tablespace, bool *victimized);
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#endif
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