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srv0conc.h
1 /*****************************************************************************
2 
3 Copyright (c) 2011, Oracle and/or its affiliates. All Rights Reserved.
4 
5 Portions of this file contain modifications contributed and copyrighted by
6 Google, Inc. Those modifications are gratefully acknowledged and are described
7 briefly in the InnoDB documentation. The contributions by Google are
8 incorporated with their permission, and subject to the conditions contained in
9 the file COPYING.Google.
10 
11 Portions of this file contain modifications contributed and copyrighted
12 by Percona Inc.. Those modifications are
13 gratefully acknowledged and are described briefly in the InnoDB
14 documentation. The contributions by Percona Inc. are incorporated with
15 their permission, and subject to the conditions contained in the file
16 COPYING.Percona.
17 
18 This program is free software; you can redistribute it and/or modify it under
19 the terms of the GNU General Public License as published by the Free Software
20 Foundation; version 2 of the License.
21 
22 This program is distributed in the hope that it will be useful, but WITHOUT
23 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
24 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
25 
26 You should have received a copy of the GNU General Public License along with
27 this program; if not, write to the Free Software Foundation, Inc.,
28 51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
29 
30 *****************************************************************************/
31 
32 /**************************************************/
40 #ifndef srv_conc_h
41 #define srv_conc_h
42 
47 extern ulint srv_max_n_threads;
48 
53 extern ulong srv_thread_concurrency;
54 
55 /*********************************************************************/
57 void
58 srv_conc_init(void);
59 /*===============*/
60 
61 /*********************************************************************/
63 void
64 srv_conc_free(void);
65 /*===============*/
66 
67 /*********************************************************************/
70 UNIV_INTERN
71 void
72 srv_conc_enter_innodb(
73 /*==================*/
74  trx_t* trx);
77 /*********************************************************************/
80 UNIV_INTERN
81 void
82 srv_conc_force_enter_innodb(
83 /*========================*/
84  trx_t* trx);
87 /*********************************************************************/
90 UNIV_INTERN
91 void
92 srv_conc_force_exit_innodb(
93 /*=======================*/
94  trx_t* trx);
97 /*********************************************************************/
99 UNIV_INTERN
100 ulint
101 srv_conc_get_waiting_threads(void);
102 /*==============================*/
103 
104 /*********************************************************************/
106 UNIV_INTERN
107 ulint
108 srv_conc_get_active_threads(void);
109 /*==============================*/
110 
111 #endif /* srv_conc_h */