/External/Mysql-5.0/include/my_no_pthread.h

 1/* Copyright (C) 2000 MySQL AB
 2
 3   This program is free software; you can redistribute it and/or modify
 4   it under the terms of the GNU General Public License as published by
 5   the Free Software Foundation; version 2 of the License.
 6
 7   This program is distributed in the hope that it will be useful,
 8   but WITHOUT ANY WARRANTY; without even the implied warranty of
 9   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
10   GNU General Public License for more details.
11
12   You should have received a copy of the GNU General Public License
13   along with this program; if not, write to the Free Software
14   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
15
16
17#if !defined(_my_no_pthread_h) && !defined(THREAD)
18#define _my_no_pthread_h
19
20
21/*
22  This block is to access some thread-related type definitions
23  even in builds which do not need thread functions,
24  as some variables (based on these types) are declared
25  even in non-threaded builds.
26  Case in point: 'mf_keycache.c'
27*/
28#if defined(__WIN__)
29#else /* Normal threads */
30#include <pthread.h>
31
32#endif /* defined(__WIN__) */
33
34
35/*
36  This undefs some pthread mutex locks when one isn't using threads
37  to make thread safe code, that should also work in single thread
38  environment, easier to use.
39*/
40#define pthread_mutex_init(A,B)
41#define pthread_mutex_lock(A)
42#define pthread_mutex_unlock(A)
43#define pthread_mutex_destroy(A)
44#define my_rwlock_init(A,B)
45#define rw_rdlock(A)
46#define rw_wrlock(A)
47#define rw_unlock(A)
48#define rwlock_destroy(A)
49
50#endif