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
|
// Copyright © Tavian Barnes <tavianator@tavianator.com>
// SPDX-License-Identifier: 0BSD
/**
* Wrappers for POSIX threading APIs.
*/
#ifndef BFS_THREAD_H
#define BFS_THREAD_H
#include "diag.h"
#include <errno.h>
#include <pthread.h>
#include <string.h>
#define thread_verify(expr, cond) \
bfs_verify((errno = (expr), (cond)), "%s: %s", #expr, strerror(errno))
/**
* Wrapper for pthread_create().
*
* @return
* 0 on success, -1 on error.
*/
#define thread_create(thread, attr, fn, arg) \
((errno = pthread_create(thread, attr, fn, arg)) ? -1 : 0)
/**
* Wrapper for pthread_join().
*/
#define thread_join(thread, ret) \
thread_verify(pthread_join(thread, ret), errno == 0)
/**
* Wrapper for pthread_mutex_init().
*/
#define mutex_init(mutex, attr) \
((errno = pthread_mutex_init(mutex, attr)) ? -1 : 0)
/**
* Wrapper for pthread_mutex_lock().
*/
#define mutex_lock(mutex) \
thread_verify(pthread_mutex_lock(mutex), errno == 0)
/**
* Wrapper for pthread_mutex_trylock().
*
* @return
* Whether the mutex was locked.
*/
#define mutex_trylock(mutex) \
(thread_verify(pthread_mutex_trylock(mutex), errno == 0 || errno == EBUSY), errno == 0)
/**
* Wrapper for pthread_mutex_unlock().
*/
#define mutex_unlock(mutex) \
thread_verify(pthread_mutex_unlock(mutex), errno == 0)
/**
* Wrapper for pthread_mutex_destroy().
*/
#define mutex_destroy(mutex) \
thread_verify(pthread_mutex_destroy(mutex), errno == 0)
/**
* Wrapper for pthread_cond_init().
*/
#define cond_init(cond, attr) \
((errno = pthread_cond_init(cond, attr)) ? -1 : 0)
/**
* Wrapper for pthread_cond_wait().
*/
#define cond_wait(cond, mutex) \
thread_verify(pthread_cond_wait(cond, mutex), errno == 0)
/**
* Wrapper for pthread_cond_signal().
*/
#define cond_signal(cond) \
thread_verify(pthread_cond_signal(cond), errno == 0)
/**
* Wrapper for pthread_cond_broadcast().
*/
#define cond_broadcast(cond) \
thread_verify(pthread_cond_broadcast(cond), errno == 0)
/**
* Wrapper for pthread_cond_destroy().
*/
#define cond_destroy(cond) \
thread_verify(pthread_cond_destroy(cond), errno == 0)
/**
* Wrapper for pthread_once().
*/
#define invoke_once(once, fn) \
thread_verify(pthread_once(once, fn), errno == 0)
#endif // BFS_THREAD_H
|
