2 * libusb synchronization using POSIX Threads
4 * Copyright © 2010 Peter Stuge <peter@stuge.se>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #ifndef LIBUSB_THREADS_POSIX_H
22 #define LIBUSB_THREADS_POSIX_H
26 #define PTHREAD_CHECK(expression) ASSERT_EQ(expression, 0)
28 #define USBI_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
29 typedef pthread_mutex_t usbi_mutex_static_t;
30 static inline void usbi_mutex_static_lock(usbi_mutex_static_t *mutex)
32 PTHREAD_CHECK(pthread_mutex_lock(mutex));
34 static inline void usbi_mutex_static_unlock(usbi_mutex_static_t *mutex)
36 PTHREAD_CHECK(pthread_mutex_unlock(mutex));
39 typedef pthread_mutex_t usbi_mutex_t;
40 static inline void usbi_mutex_init(usbi_mutex_t *mutex)
42 PTHREAD_CHECK(pthread_mutex_init(mutex, NULL));
44 static inline void usbi_mutex_lock(usbi_mutex_t *mutex)
46 PTHREAD_CHECK(pthread_mutex_lock(mutex));
48 static inline void usbi_mutex_unlock(usbi_mutex_t *mutex)
50 PTHREAD_CHECK(pthread_mutex_unlock(mutex));
52 static inline int usbi_mutex_trylock(usbi_mutex_t *mutex)
54 return pthread_mutex_trylock(mutex) == 0;
56 static inline void usbi_mutex_destroy(usbi_mutex_t *mutex)
58 PTHREAD_CHECK(pthread_mutex_destroy(mutex));
61 typedef pthread_cond_t usbi_cond_t;
62 void usbi_cond_init(pthread_cond_t *cond);
63 static inline void usbi_cond_wait(usbi_cond_t *cond, usbi_mutex_t *mutex)
65 PTHREAD_CHECK(pthread_cond_wait(cond, mutex));
67 int usbi_cond_timedwait(usbi_cond_t *cond,
68 usbi_mutex_t *mutex, const struct timeval *tv);
69 static inline void usbi_cond_broadcast(usbi_cond_t *cond)
71 PTHREAD_CHECK(pthread_cond_broadcast(cond));
73 static inline void usbi_cond_destroy(usbi_cond_t *cond)
75 PTHREAD_CHECK(pthread_cond_destroy(cond));
78 typedef pthread_key_t usbi_tls_key_t;
79 static inline void usbi_tls_key_create(usbi_tls_key_t *key)
81 PTHREAD_CHECK(pthread_key_create(key, NULL));
83 static inline void *usbi_tls_key_get(usbi_tls_key_t key)
85 return pthread_getspecific(key);
87 static inline void usbi_tls_key_set(usbi_tls_key_t key, void *ptr)
89 PTHREAD_CHECK(pthread_setspecific(key, ptr));
91 static inline void usbi_tls_key_delete(usbi_tls_key_t key)
93 PTHREAD_CHECK(pthread_key_delete(key));
96 unsigned int usbi_get_tid(void);
98 #endif /* LIBUSB_THREADS_POSIX_H */