1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
/*
* ithread.h
*
* $Id: ithread.h,v 1.1 2000/01/28 14:08:40 source Exp $
*
* Macros for locking & multihreading
*
* The iODBC driver manager.
*
* (C)Copyright 2000 OpenLink Software.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef _ITHREAD_H
#define _ITHREAD_H
/*
* Threading under windows
*/
#if defined (WIN32) && !defined (NO_THREADING)
# define IODBC_THREADING
# define THREAD_IDENT ((unsigned long) GetCurrentThreadId())
# define MUTEX_DECLARE(M) HANDLE M
# define MUTEX_INIT(M) M = CreateMutex (NULL, FALSE, NULL)
# define MUTEX_DONE(M) CloseHandle (M)
# define MUTEX_LOCK(M) WaitForSingleObject (M, INFINITE)
# define MUTEX_UNLOCK(M) ReleaseMutex (M)
# define SPINLOCK_DECLARE(M) CRITICAL_SECTION M
# define SPINLOCK_INIT(M) InitializeCriticalSection (&M)
# define SPINLOCK_DONE(M) DeleteCriticalSection (&M)
# define SPINLOCK_LOCK(M) EnterCriticalSection (&M)
# define SPINLOCK_UNLOCK(M) LeaveCriticalSection (&M)
/*
* Threading with pthreads
*/
#elif defined (WITH_PTHREADS)
#ifndef _REENTRANT
# error Add -D_REENTRANT to your compiler flags
#endif
#include <pthread.h>
# define IODBC_THREADING
# ifndef OLD_PTHREADS
# define THREAD_IDENT ((unsigned long) (pthread_self ()))
# else
# define THREAD_IDENT 0UL
# endif
# define MUTEX_DECLARE(M) pthread_mutex_t M
# define MUTEX_INIT(M) pthread_mutex_init (&M, NULL)
# define MUTEX_DONE(M) pthread_mutex_destroy (&M);
# define MUTEX_LOCK(M) pthread_mutex_lock(&M)
# define MUTEX_UNLOCK(M) pthread_mutex_unlock(&M)
# define SPINLOCK_DECLARE(M) MUTEX_DECLARE(M)
# define SPINLOCK_INIT(M) MUTEX_INIT(M)
# define SPINLOCK_DONE(M) MUTEX_DONE(M)
# define SPINLOCK_LOCK(M) MUTEX_LOCK(M)
# define SPINLOCK_UNLOCK(M) MUTEX_UNLOCK(M)
/*
* No threading
*/
#else
# undef IODBC_THREADING
# undef THREAD_IDENT
# define MUTEX_DECLARE(M) int M
# define MUTEX_INIT(M) M = 1
# define MUTEX_DONE(M) M = 1
# define MUTEX_LOCK(M) M = 1
# define MUTEX_UNLOCK(M) M = 1
# define SPINLOCK_DECLARE(M) MUTEX_DECLARE (M)
# define SPINLOCK_INIT(M) MUTEX_INIT (M)
# define SPINLOCK_DONE(M) MUTEX_DONE (M)
# define SPINLOCK_LOCK(M) MUTEX_LOCK (M)
# define SPINLOCK_UNLOCK(M) MUTEX_UNLOCK (M)
#endif
#endif /* _ITHREAD_H */
|
