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
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/***************************************************************************
* Description: Multi thread portability code for JK *
* Author: Gal Shachor <shachor@il.ibm.com> *
* Version: $Revision: 1837376 $ *
***************************************************************************/
#ifndef _JK_MT_H
#define _JK_MT_H
#include "jk_global.h"
#if defined(WIN32)
#define jk_gettid() ((jk_uint32_t)GetCurrentThreadId())
#endif
#ifdef JK_PREFORK
#define _MT_CODE 0
#else
#define _MT_CODE 1
#endif
/*
* Marks execution under MT compilation
*/
#if _MT_CODE
#ifdef WIN32
#include <windows.h>
typedef CRITICAL_SECTION JK_CRIT_SEC;
#define JK_INIT_CS(x, rc) InitializeCriticalSection(x); rc = JK_TRUE
#define JK_DELETE_CS(x) DeleteCriticalSection(x)
#define JK_ENTER_CS(x) EnterCriticalSection(x)
#define JK_LEAVE_CS(x) LeaveCriticalSection(x)
#else /* !WIN32 */
#define _MT_CODE_PTHREAD
#include <pthread.h>
#include <unistd.h>
#include <fcntl.h>
typedef pthread_mutex_t JK_CRIT_SEC;
#define JK_INIT_CS(x, rc) \
if (pthread_mutex_init(x, NULL)) rc = JK_FALSE; else rc = JK_TRUE
#define JK_DELETE_CS(x) pthread_mutex_destroy(x)
#define JK_ENTER_CS(x) pthread_mutex_lock(x)
#define JK_LEAVE_CS(x) pthread_mutex_unlock(x)
#if defined(AS400)
#define jk_pthread_t jk_uint32_t
#endif /* AS400 */
jk_pthread_t jk_gettid(void);
#endif /* WIN32 */
#else /* !_MT_CODE */
typedef void *JK_CRIT_SEC;
#define JK_INIT_CS(x, rc) rc = JK_TRUE
#define JK_DELETE_CS(x) (void)0
#define JK_ENTER_CS(x) (void)0
#define JK_LEAVE_CS(x) (void)0
#define jk_gettid() 0
#endif /* MT_CODE */
#if !defined(WIN32)
#include <unistd.h>
#include <fcntl.h>
#if HAVE_FLOCK
#ifdef JK_USE_FLOCK
#define USE_FLOCK_LK 1
#endif
#endif
#ifndef USE_FLOCK_LK
#define USE_FLOCK_LK 0
#endif
#if USE_FLOCK_LK
#include <sys/file.h>
#define JK_ENTER_LOCK(x, rc) \
do { \
while ((rc = flock((x), LOCK_EX) < 0) && (errno == EINTR)); \
rc = rc == 0 ? JK_TRUE : JK_FALSE; \
} while (0)
#define JK_LEAVE_LOCK(x, rc) \
do { \
while ((rc = flock((x), LOCK_UN) < 0) && (errno == EINTR)); \
rc = rc == 0 ? JK_TRUE : JK_FALSE; \
} while (0)
#else /* !USE_FLOCK_LK */
#define JK_ENTER_LOCK(x, rc) \
do { \
struct flock _fl; \
_fl.l_type = F_WRLCK; \
_fl.l_whence = SEEK_SET; \
_fl.l_start = 0; \
_fl.l_len = 1L; \
_fl.l_pid = 0; \
while ((rc = fcntl((x), F_SETLKW, &_fl) < 0) && (errno == EINTR)); \
rc = rc == 0 ? JK_TRUE : JK_FALSE; \
} while (0)
#define JK_LEAVE_LOCK(x, rc) \
do { \
struct flock _fl; \
_fl.l_type = F_UNLCK; \
_fl.l_whence = SEEK_SET; \
_fl.l_start = 0; \
_fl.l_len = 1L; \
_fl.l_pid = 0; \
while ((rc = fcntl((x), F_SETLKW, &_fl) < 0) && (errno == EINTR)); \
rc = rc == 0 ? JK_TRUE : JK_FALSE; \
} while (0)
#endif /* USE_FLOCK_LK */
#else /* WIN32 */
#define JK_ENTER_LOCK(x, rc) rc = JK_TRUE
#define JK_LEAVE_LOCK(x, rc) rc = JK_TRUE
#endif
#endif /* _JK_MT_H */
|
