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04db41adf3
1.0.21 adds a usbdk backend, which may be helpful as it could be used in the future to work around the missing isochronous transfer support for WinUSB backends. Here is the full changelog (from libusb). 2016-10-01: v1.0.21: * Core: Refactor code related to transfer flags and timeout handling * Darwin: Ignore root hub simulation devices * Darwin: Improved support for OS X El Capitan * Darwin: Work around devices with buggy endpoint descriptors * Darwin: Do not use objc_registerThreadWithCollector after its deprecation * Darwin: Use C11 atomics on 10.12+ as the OS atomics are now deprecated * Linux: Support preallocating kernel memory for zerocopy USB * Linux: Deal with receiving POLLERR before all transfers have completed * Solaris: Add solaris backend * Windows: Add Visual Studio 2015 support * Windows: Add usbdk backend * Prevent attempts to recursively handle events * Fix race condition in handle_timeout() * Allow transferred argument to be optional in bulk APIs * Various other bug fixes and improvements
79 lines
2.2 KiB
C
79 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 <vlovich@aliph.com>
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* Copyright © 2011 Peter Stuge <peter@stuge.se>
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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 <mach/mach.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 = -1;
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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 = mach_thread_self();
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mach_port_deallocate(mach_task_self(), ret);
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#elif defined(__CYGWIN__)
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ret = GetCurrentThreadId();
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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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