1 /* 2 * libusb synchronization on Microsoft Windows 3 * 4 * Copyright © 2010 Michael Plante <michael.plante@gmail.com> 5 * 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. 10 * 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. 15 * 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 19 */ 20 21 #ifndef LIBUSB_THREADS_WINDOWS_H 22 #define LIBUSB_THREADS_WINDOWS_H 23 24 #define usbi_mutex_static_t volatile LONG 25 #define USBI_MUTEX_INITIALIZER 0 26 27 #define usbi_mutex_t HANDLE 28 29 typedef struct usbi_cond { 30 // Every time a thread touches the CV, it winds up in one of these lists. 31 // It stays there until the CV is destroyed, even if the thread terminates. 32 struct list_head waiters; 33 struct list_head not_waiting; 34 } usbi_cond_t; 35 36 // We *were* getting timespec from pthread.h: 37 #if (!defined(HAVE_STRUCT_TIMESPEC) && !defined(_TIMESPEC_DEFINED)) 38 #define HAVE_STRUCT_TIMESPEC 1 39 #define _TIMESPEC_DEFINED 1 40 struct timespec { 41 long tv_sec; 42 long tv_nsec; 43 }; 44 #endif /* HAVE_STRUCT_TIMESPEC | _TIMESPEC_DEFINED */ 45 46 // We *were* getting ETIMEDOUT from pthread.h: 47 #ifndef ETIMEDOUT 48 # define ETIMEDOUT 10060 /* This is the value in winsock.h. */ 49 #endif 50 51 #define usbi_tls_key_t DWORD 52 53 int usbi_mutex_static_lock(usbi_mutex_static_t *mutex); 54 int usbi_mutex_static_unlock(usbi_mutex_static_t *mutex); 55 56 int usbi_mutex_init(usbi_mutex_t *mutex); 57 int usbi_mutex_lock(usbi_mutex_t *mutex); 58 int usbi_mutex_unlock(usbi_mutex_t *mutex); 59 int usbi_mutex_trylock(usbi_mutex_t *mutex); 60 int usbi_mutex_destroy(usbi_mutex_t *mutex); 61 62 int usbi_cond_init(usbi_cond_t *cond); 63 int usbi_cond_wait(usbi_cond_t *cond, usbi_mutex_t *mutex); 64 int usbi_cond_timedwait(usbi_cond_t *cond, 65 usbi_mutex_t *mutex, const struct timeval *tv); 66 int usbi_cond_broadcast(usbi_cond_t *cond); 67 int usbi_cond_destroy(usbi_cond_t *cond); 68 69 int usbi_tls_key_create(usbi_tls_key_t *key); 70 void *usbi_tls_key_get(usbi_tls_key_t key); 71 int usbi_tls_key_set(usbi_tls_key_t key, void *value); 72 int usbi_tls_key_delete(usbi_tls_key_t key); 73 74 int usbi_get_tid(void); 75 76 #endif /* LIBUSB_THREADS_WINDOWS_H */ 77