2 * libusb synchronization using POSIX Threads
4 * Copyright © 2011 Vitali Lovich <vlovich@aliph.com>
5 * Copyright © 2011 Peter Stuge <peter@stuge.se>
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 #if defined(__ANDROID__)
26 #elif defined(__linux__) || defined(__OpenBSD__)
27 # if defined(__OpenBSD__)
30 # include <sys/syscall.h>
33 int usbi_cond_timedwait(pthread_cond_t *cond,
34 pthread_mutex_t *mutex, const struct timeval *tv)
36 struct timespec timeout;
39 r = usbi_backend.clock_gettime(USBI_CLOCK_REALTIME, &timeout);
43 timeout.tv_sec += tv->tv_sec;
44 timeout.tv_nsec += tv->tv_usec * 1000;
45 while (timeout.tv_nsec >= 1000000000L) {
46 timeout.tv_nsec -= 1000000000L;
50 return pthread_cond_timedwait(cond, mutex, &timeout);
53 int usbi_get_tid(void)
56 #if defined(__ANDROID__)
58 #elif defined(__linux__)
59 ret = syscall(SYS_gettid);
60 #elif defined(__OpenBSD__)
61 /* The following only works with OpenBSD > 5.1 as it requires
62 real thread support. For 5.1 and earlier, -1 is returned. */
63 ret = syscall(SYS_getthrid);
64 #elif defined(__APPLE__)
65 ret = (int)pthread_mach_thread_np(pthread_self());
66 #elif defined(__CYGWIN__)
67 ret = GetCurrentThreadId();
71 /* TODO: NetBSD thread ID support */