rpn2solr: reformat (same as "master").
[yaz-moved-to-github.git] / src / condvar.c
1 /* This file is part of the YAZ toolkit.
2  * Copyright (C) 1995-2013 Index Data
3  * See the file LICENSE for details.
4  */
5
6 /**
7  * \file condvar.c
8  * \brief Wraps condition variables
9  *
10  */
11 #if HAVE_CONFIG_H
12 #include <config.h>
13 #endif
14
15 #include <assert.h>
16 #include <stdlib.h>
17 #include <string.h>
18 #include <errno.h>
19 #include <stddef.h>
20 #include <yaz/xmalloc.h>
21 #include <yaz/nmem.h>
22 #include <yaz/log.h>
23 #include <yaz/mutex.h>
24 #include <yaz/gettimeofday.h>
25 #ifdef WIN32
26 #include <windows.h>
27 #include <sys/timeb.h>
28 #endif
29 #include <time.h>
30
31 #if HAVE_SYS_TIME_H
32 #include <sys/time.h>
33 #endif
34
35 #if YAZ_POSIX_THREADS
36 #include <pthread.h>
37 #endif
38
39 #include "mutex-p.h"
40
41 struct yaz_cond {
42 #ifdef WIN32
43     CONDITION_VARIABLE cond;
44 #elif YAZ_POSIX_THREADS
45     pthread_cond_t cond;
46 #endif
47 };
48
49 void yaz_cond_create(YAZ_COND *p)
50 {
51 #ifdef WIN32
52     *p = (YAZ_COND) malloc(sizeof(**p));
53     InitializeConditionVariable(&(*p)->cond);
54 #elif YAZ_POSIX_THREADS
55     *p = (YAZ_COND) malloc(sizeof(**p));
56     pthread_cond_init(&(*p)->cond, 0);
57 #else
58     *p = 0;
59 #endif
60 }
61
62 void yaz_cond_destroy(YAZ_COND *p)
63 {
64     if (*p)
65     {
66 #ifdef WIN32
67 #elif YAZ_POSIX_THREADS
68         pthread_cond_destroy(&(*p)->cond);
69 #endif
70         free(*p);
71         *p = 0;
72     }
73 }
74
75 int yaz_cond_wait(YAZ_COND p, YAZ_MUTEX m, const struct timeval *abstime)
76 {
77 #ifdef WIN32
78     BOOL v;
79     if (abstime)
80     {
81         struct timeval tval_now;
82         int sec, msec;
83
84         yaz_gettimeofday(&tval_now);
85
86         sec = abstime->tv_sec - tval_now.tv_sec;
87         msec = (abstime->tv_usec - tval_now.tv_usec) / 1000;
88         v = SleepConditionVariableCS(&p->cond, &m->handle, sec*1000 + msec);
89     }
90     else
91         v = SleepConditionVariableCS(&p->cond, &m->handle, INFINITE);
92     return v ? 0 : -1;
93 #elif YAZ_POSIX_THREADS
94     if (abstime)
95     {
96         struct timespec s;
97         s.tv_sec = abstime->tv_sec;
98         s.tv_nsec = abstime->tv_usec * 1000;
99         return pthread_cond_timedwait(&p->cond, &m->handle, &s);
100     }
101     else
102         return pthread_cond_wait(&p->cond, &m->handle);
103 #else
104     return -1;
105 #endif
106 }
107
108 int yaz_cond_signal(YAZ_COND p)
109 {
110 #ifdef WIN32
111     WakeConditionVariable(&p->cond);
112     return 0;
113 #elif YAZ_POSIX_THREADS
114     return pthread_cond_signal(&p->cond);
115 #else
116     return -1;
117 #endif
118 }
119
120 int yaz_cond_broadcast(YAZ_COND p)
121 {
122 #ifdef WIN32
123     WakeAllConditionVariable(&p->cond);
124     return 0;
125 #elif YAZ_POSIX_THREADS
126     return pthread_cond_broadcast(&p->cond);
127 #else
128     return -1;
129 #endif
130 }
131
132 /*
133  * Local variables:
134  * c-basic-offset: 4
135  * c-file-style: "Stroustrup"
136  * indent-tabs-mode: nil
137  * End:
138  * vim: shiftwidth=4 tabstop=8 expandtab
139  */
140