Léo Lam
1b9617c85c
Now has support for isochronous transfers in the WinUSB backend, which may or may not work better than the UsbDk backend.
81 lines
2.2 KiB
C
81 lines
2.2 KiB
C
/*
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* libusb synchronization using POSIX Threads
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*
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* Copyright © 2011 Vitali Lovich <[email protected]>
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* Copyright © 2011 Peter Stuge <[email protected]>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <config.h>
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#include <time.h>
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#if defined(__linux__) || defined(__OpenBSD__)
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# if defined(__OpenBSD__)
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# define _BSD_SOURCE
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# endif
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# include <unistd.h>
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# include <sys/syscall.h>
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#elif defined(__APPLE__)
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# include <pthread.h>
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#elif defined(__CYGWIN__)
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# include <windows.h>
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#endif
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#include "threads_posix.h"
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#include "libusbi.h"
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int usbi_cond_timedwait(pthread_cond_t *cond,
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pthread_mutex_t *mutex, const struct timeval *tv)
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{
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struct timespec timeout;
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int r;
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r = usbi_backend.clock_gettime(USBI_CLOCK_REALTIME, &timeout);
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if (r < 0)
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return r;
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timeout.tv_sec += tv->tv_sec;
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timeout.tv_nsec += tv->tv_usec * 1000;
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while (timeout.tv_nsec >= 1000000000L) {
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timeout.tv_nsec -= 1000000000L;
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timeout.tv_sec++;
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}
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return pthread_cond_timedwait(cond, mutex, &timeout);
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}
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int usbi_get_tid(void)
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{
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int ret;
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#if defined(__ANDROID__)
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ret = gettid();
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#elif defined(__linux__)
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ret = syscall(SYS_gettid);
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#elif defined(__OpenBSD__)
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/* The following only works with OpenBSD > 5.1 as it requires
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real thread support. For 5.1 and earlier, -1 is returned. */
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ret = syscall(SYS_getthrid);
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#elif defined(__APPLE__)
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ret = (int)pthread_mach_thread_np(pthread_self());
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#elif defined(__CYGWIN__)
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ret = GetCurrentThreadId();
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#else
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ret = -1;
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#endif
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/* TODO: NetBSD thread ID support */
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return ret;
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}
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