1 /*
2 * libusb synchronization on Microsoft Windows
3 *
4 * Copyright © 2010 Michael Plante <michael.plante@gmail.com>
5 * Copyright © 2020 Chris Dickens <christopher.a.dickens@gmail.com>
6 *
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.
11 *
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.
16 *
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
20 */
21
22 #include "libusbi.h"
23
usbi_cond_timedwait(usbi_cond_t * cond,usbi_mutex_t * mutex,const struct timeval * tv)24 int usbi_cond_timedwait(usbi_cond_t *cond,
25 usbi_mutex_t *mutex, const struct timeval *tv)
26 {
27 DWORD millis;
28
29 millis = (DWORD)(tv->tv_sec * 1000L) + (tv->tv_usec / 1000L);
30 /* round up to next millisecond */
31 if (tv->tv_usec % 1000L)
32 millis++;
33
34 if (SleepConditionVariableCS(cond, mutex, millis))
35 return 0;
36 else if (GetLastError() == ERROR_TIMEOUT)
37 return LIBUSB_ERROR_TIMEOUT;
38 else
39 return LIBUSB_ERROR_OTHER;
40 }
41