15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 2ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch * libusbx synchronization on Microsoft Windows 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 4ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch * Copyright © 2010 Michael Plante <michael.plante@gmail.com> 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * This library is free software; you can redistribute it and/or 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * modify it under the terms of the GNU Lesser General Public 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * License as published by the Free Software Foundation; either 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * version 2.1 of the License, or (at your option) any later version. 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * This library is distributed in the hope that it will be useful, 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * but WITHOUT ANY WARRANTY; without even the implied warranty of 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Lesser General Public License for more details. 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * You should have received a copy of the GNU Lesser General Public 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * License along with this library; if not, write to the Free Software 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <config.h> 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <objbase.h> 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <errno.h> 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <stdarg.h> 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "libusbi.h" 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 28ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdochextern const uint64_t epoch_time; 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int usbi_mutex_init(usbi_mutex_t *mutex, 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const usbi_mutexattr_t *attr) { 32ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch UNUSED(attr); 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(! mutex) return ((errno=EINVAL)); 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *mutex = CreateMutex(NULL, FALSE, NULL); 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(!*mutex) return ((errno=ENOMEM)); 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int usbi_mutex_destroy(usbi_mutex_t *mutex) { 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // It is not clear if CloseHandle failure is due to failure to unlock. 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If so, this should be errno=EBUSY. 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(!mutex || !CloseHandle(*mutex)) return ((errno=EINVAL)); 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *mutex = NULL; 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int usbi_mutex_trylock(usbi_mutex_t *mutex) { 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD result; 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(!mutex) return ((errno=EINVAL)); 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) result = WaitForSingleObject(*mutex, 0); 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(result == WAIT_OBJECT_0 || result == WAIT_ABANDONED) 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; // acquired (ToDo: check that abandoned is ok) 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(result == WAIT_TIMEOUT) 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ((errno=EBUSY)); 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ((errno=EINVAL)); // don't know how this would happen 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // so don't know proper errno 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int usbi_mutex_lock(usbi_mutex_t *mutex) { 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD result; 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(!mutex) return ((errno=EINVAL)); 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) result = WaitForSingleObject(*mutex, INFINITE); 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(result == WAIT_OBJECT_0 || result == WAIT_ABANDONED) 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; // acquired (ToDo: check that abandoned is ok) 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ((errno=EINVAL)); // don't know how this would happen 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // so don't know proper errno 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int usbi_mutex_unlock(usbi_mutex_t *mutex) { 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(!mutex) return ((errno=EINVAL)); 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(!ReleaseMutex(*mutex)) return ((errno=EPERM )); 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int usbi_mutex_static_lock(usbi_mutex_static_t *mutex) { 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(!mutex) return ((errno=EINVAL)); 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) while (InterlockedExchange((LONG *)mutex, 1) == 1) { 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SleepEx(0, TRUE); 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int usbi_mutex_static_unlock(usbi_mutex_static_t *mutex) { 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(!mutex) return ((errno=EINVAL)); 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *mutex = 0; 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int usbi_cond_init(usbi_cond_t *cond, 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const usbi_condattr_t *attr) { 86ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch UNUSED(attr); 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(!cond) return ((errno=EINVAL)); 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) list_init(&cond->waiters ); 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) list_init(&cond->not_waiting); 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int usbi_cond_destroy(usbi_cond_t *cond) { 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This assumes no one is using this anymore. The check MAY NOT BE safe. 94ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch struct usbi_cond_perthread *pos, *next_pos = NULL; 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(!cond) return ((errno=EINVAL)); 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(!list_empty(&cond->waiters)) return ((errno=EBUSY )); // (!see above!) 97ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch list_for_each_entry_safe(pos, next_pos, &cond->not_waiting, list, struct usbi_cond_perthread) { 98ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch CloseHandle(pos->event); 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) list_del(&pos->list); 100ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch free(pos); 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int usbi_cond_broadcast(usbi_cond_t *cond) { 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Assumes mutex is locked; this is not in keeping with POSIX spec, but 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // libusb does this anyway, so we simplify by not adding more sync 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // primitives to the CV definition! 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int fail = 0; 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct usbi_cond_perthread *pos; 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(!cond) return ((errno=EINVAL)); 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) list_for_each_entry(pos, &cond->waiters, list, struct usbi_cond_perthread) { 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(!SetEvent(pos->event)) 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fail = 1; 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The wait function will remove its respective item from the list. 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return fail ? ((errno=EINVAL)) : 0; 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int usbi_cond_signal(usbi_cond_t *cond) { 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Assumes mutex is locked; this is not in keeping with POSIX spec, but 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // libusb does this anyway, so we simplify by not adding more sync 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // primitives to the CV definition! 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct usbi_cond_perthread *pos; 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(!cond) return ((errno=EINVAL)); 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(list_empty(&cond->waiters)) return 0; // no one to wakeup. 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pos = list_entry(&cond->waiters.next, struct usbi_cond_perthread, list); 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The wait function will remove its respective item from the list. 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return SetEvent(pos->event) ? 0 : ((errno=EINVAL)); 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 131ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch__inline static int usbi_cond_intwait(usbi_cond_t *cond, 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) usbi_mutex_t *mutex, 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD timeout_ms) { 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct usbi_cond_perthread *pos; 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int found = 0, r; 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD r2,tid = GetCurrentThreadId(); 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(!cond || !mutex) return ((errno=EINVAL)); 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) list_for_each_entry(pos, &cond->not_waiting, list, struct usbi_cond_perthread) { 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(tid == pos->tid) { 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) found = 1; 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(!found) { 145eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch pos = (struct usbi_cond_perthread*) calloc(1, sizeof(struct usbi_cond_perthread)); 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(!pos) return ((errno=ENOMEM)); // This errno is not POSIX-allowed. 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pos->tid = tid; 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pos->event = CreateEvent(NULL, FALSE, FALSE, NULL); // auto-reset. 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(!pos->event) { 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) free(pos); 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ((errno=ENOMEM)); 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) list_add(&pos->list, &cond->not_waiting); 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) list_del(&pos->list); // remove from not_waiting list. 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) list_add(&pos->list, &cond->waiters); 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) r = usbi_mutex_unlock(mutex); 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(r) return r; 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) r2 = WaitForSingleObject(pos->event, timeout_ms); 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) r = usbi_mutex_lock(mutex); 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(r) return r; 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) list_del(&pos->list); 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) list_add(&pos->list, &cond->not_waiting); 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(r2 == WAIT_TIMEOUT) return ((errno=ETIMEDOUT)); 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// N.B.: usbi_cond_*wait() can also return ENOMEM, even though pthread_cond_*wait cannot! 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int usbi_cond_wait(usbi_cond_t *cond, usbi_mutex_t *mutex) { 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return usbi_cond_intwait(cond, mutex, INFINITE); 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int usbi_cond_timedwait(usbi_cond_t *cond, 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) usbi_mutex_t *mutex, 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const struct timespec *abstime) { 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FILETIME filetime; 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ULARGE_INTEGER rtime; 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct timeval targ_time, cur_time, delta_time; 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct timespec cur_time_ns; 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD millis; 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 185ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch // GetSystemTimeAsFileTime() is not available on CE 186ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch SYSTEMTIME st; 187ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch GetSystemTime(&st); 188ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch SystemTimeToFileTime(&st, &filetime); 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) rtime.LowPart = filetime.dwLowDateTime; 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) rtime.HighPart = filetime.dwHighDateTime; 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) rtime.QuadPart -= epoch_time; 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) cur_time_ns.tv_sec = (long)(rtime.QuadPart / 10000000); 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) cur_time_ns.tv_nsec = (long)((rtime.QuadPart % 10000000)*100); 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) TIMESPEC_TO_TIMEVAL(&cur_time, &cur_time_ns); 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) TIMESPEC_TO_TIMEVAL(&targ_time, abstime); 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) timersub(&targ_time, &cur_time, &delta_time); 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if(delta_time.tv_sec < 0) // abstime already passed? 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) millis = 0; 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else { 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) millis = delta_time.tv_usec/1000; 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) millis += delta_time.tv_sec *1000; 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (delta_time.tv_usec % 1000) // round up to next millisecond 2045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) millis++; 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return usbi_cond_intwait(cond, mutex, millis); 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 210ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdochint usbi_get_tid(void) { 211ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch return GetCurrentThreadId(); 212ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch} 213