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/*****************************************************************************
Copyright (c) 1996, 2015, Oracle and/or its affiliates. All Rights Reserved.
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
*****************************************************************************/
/**************************************************//**
@file include/lock0types.h
The transaction lock system global types
Created 5/7/1996 Heikki Tuuri
*******************************************************/
#include "ut0lst.h"
#ifndef lock0types_h
#define lock0types_h
#define lock_t ib_lock_t
struct lock_t;
struct lock_sys_t;
struct lock_table_t;
/* Basic lock modes */
enum lock_mode {
LOCK_IS = 0, /* intention shared */
LOCK_IX, /* intention exclusive */
LOCK_S, /* shared */
LOCK_X, /* exclusive */
LOCK_AUTO_INC, /* locks the auto-inc counter of a table
in an exclusive mode */
LOCK_NONE, /* this is used elsewhere to note consistent read */
LOCK_NUM = LOCK_NONE, /* number of lock modes */
LOCK_NONE_UNSET = 255
};
/** Convert the given enum value into string.
@param[in] mode the lock mode
@return human readable string of the given enum value */
inline
const char* lock_mode_string(enum lock_mode mode)
{
switch (mode) {
case LOCK_IS:
return("LOCK_IS");
case LOCK_IX:
return("LOCK_IX");
case LOCK_S:
return("LOCK_S");
case LOCK_X:
return("LOCK_X");
case LOCK_AUTO_INC:
return("LOCK_AUTO_INC");
case LOCK_NONE:
return("LOCK_NONE");
case LOCK_NONE_UNSET:
return("LOCK_NONE_UNSET");
default:
ut_error;
}
}
typedef UT_LIST_BASE_NODE_T(lock_t) trx_lock_list_t;
#endif /* lock0types_h */
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