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lock0types.h
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3 Copyright (c) 1996, 2009, Oracle and/or its affiliates. All Rights Reserved.
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19 /**************************************************/
26 #ifndef lock0types_h
27 #define lock0types_h
28 
29 #define lock_t ib_lock_t
30 struct lock_t;
31 struct lock_sys_t;
32 
33 /* Basic lock modes */
34 enum lock_mode {
35  LOCK_IS = 0, /* intention shared */
36  LOCK_IX, /* intention exclusive */
37  LOCK_S, /* shared */
38  LOCK_X, /* exclusive */
39  LOCK_AUTO_INC, /* locks the auto-inc counter of a table
40  in an exclusive mode */
41  LOCK_NONE, /* this is used elsewhere to note consistent read */
42  LOCK_NUM = LOCK_NONE, /* number of lock modes */
43  LOCK_NONE_UNSET = 255
44 };
45 
46 
47 #endif