From c6d603981adec7c0099fb48fc3369517b458ee85 Mon Sep 17 00:00:00 2001 From: ZoRo Date: Sat, 19 Feb 2022 21:43:52 +0000 Subject: Compilable rusb for linux --- src/os/events_windows.c | 214 ------------------------------------------------ 1 file changed, 214 deletions(-) delete mode 100644 src/os/events_windows.c (limited to 'src/os/events_windows.c') diff --git a/src/os/events_windows.c b/src/os/events_windows.c deleted file mode 100644 index f22bebc..0000000 --- a/src/os/events_windows.c +++ /dev/null @@ -1,214 +0,0 @@ -/* - * libusb event abstraction on Microsoft Windows - * - * Copyright © 2020 Chris Dickens - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include - -#include "libusbi.h" -#include "windows_common.h" - -int usbi_create_event(usbi_event_t *event) -{ - event->hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); - if (event->hEvent == NULL) { - usbi_err(NULL, "CreateEvent failed: %s", windows_error_str(0)); - return LIBUSB_ERROR_OTHER; - } - - return 0; -} - -void usbi_destroy_event(usbi_event_t *event) -{ - if (!CloseHandle(event->hEvent)) - usbi_warn(NULL, "CloseHandle failed: %s", windows_error_str(0)); -} - -void usbi_signal_event(usbi_event_t *event) -{ - if (!SetEvent(event->hEvent)) - usbi_warn(NULL, "SetEvent failed: %s", windows_error_str(0)); -} - -void usbi_clear_event(usbi_event_t *event) -{ - if (!ResetEvent(event->hEvent)) - usbi_warn(NULL, "ResetEvent failed: %s", windows_error_str(0)); -} - -#ifdef HAVE_OS_TIMER -int usbi_create_timer(usbi_timer_t *timer) -{ - timer->hTimer = CreateWaitableTimer(NULL, TRUE, NULL); - if (timer->hTimer == NULL) { - usbi_warn(NULL, "CreateWaitableTimer failed: %s", windows_error_str(0)); - return LIBUSB_ERROR_OTHER; - } - - return 0; -} - -void usbi_destroy_timer(usbi_timer_t *timer) -{ - if (!CloseHandle(timer->hTimer)) - usbi_warn(NULL, "CloseHandle failed: %s", windows_error_str(0)); -} - -int usbi_arm_timer(usbi_timer_t *timer, const struct timespec *timeout) -{ - struct timespec systime, remaining; - FILETIME filetime; - LARGE_INTEGER dueTime; - - /* Transfer timeouts are based on the monotonic clock and the waitable - * timers on the system clock. This requires a conversion between the - * two, so we calculate the remaining time relative to the monotonic - * clock and calculate an absolute system time for the timer expiration. - * Note that if the timeout has already passed, the remaining time will - * be negative and thus an absolute system time in the past will be set. - * This works just as intended because the timer becomes signalled - * immediately. */ - usbi_get_monotonic_time(&systime); - - TIMESPEC_SUB(timeout, &systime, &remaining); - - GetSystemTimeAsFileTime(&filetime); - dueTime.LowPart = filetime.dwLowDateTime; - dueTime.HighPart = filetime.dwHighDateTime; - dueTime.QuadPart += (remaining.tv_sec * 10000000LL) + (remaining.tv_nsec / 100LL); - - if (!SetWaitableTimer(timer->hTimer, &dueTime, 0, NULL, NULL, FALSE)) { - usbi_warn(NULL, "SetWaitableTimer failed: %s", windows_error_str(0)); - return LIBUSB_ERROR_OTHER; - } - - return 0; -} - -int usbi_disarm_timer(usbi_timer_t *timer) -{ - LARGE_INTEGER dueTime; - - /* A manual-reset waitable timer will stay in the signalled state until - * another call to SetWaitableTimer() is made. It is possible that the - * timer has already expired by the time we come in to disarm it, so to - * be entirely sure the timer is disarmed and not in the signalled state, - * we will set it with an impossibly large expiration and immediately - * cancel. */ - dueTime.QuadPart = LLONG_MAX; - if (!SetWaitableTimer(timer->hTimer, &dueTime, 0, NULL, NULL, FALSE)) { - usbi_warn(NULL, "SetWaitableTimer failed: %s", windows_error_str(0)); - return LIBUSB_ERROR_OTHER; - } - - if (!CancelWaitableTimer(timer->hTimer)) { - usbi_warn(NULL, "SetWaitableTimer failed: %s", windows_error_str(0)); - return LIBUSB_ERROR_OTHER; - } - - return 0; -} -#endif - -int usbi_alloc_event_data(struct libusb_context *ctx) -{ - struct usbi_event_source *ievent_source; - HANDLE *handles; - size_t i = 0; - - /* Event sources are only added during usbi_io_init(). We should not - * be running this function again if the event data has already been - * allocated. */ - if (ctx->event_data) { - usbi_warn(ctx, "program assertion failed - event data already allocated"); - return LIBUSB_ERROR_OTHER; - } - - ctx->event_data_cnt = 0; - for_each_event_source(ctx, ievent_source) - ctx->event_data_cnt++; - - /* We only expect up to two HANDLEs to wait on, one for the internal - * signalling event and the other for the timer. */ - if (ctx->event_data_cnt != 1 && ctx->event_data_cnt != 2) { - usbi_err(ctx, "program assertion failed - expected exactly 1 or 2 HANDLEs"); - return LIBUSB_ERROR_OTHER; - } - - handles = calloc(ctx->event_data_cnt, sizeof(HANDLE)); - if (!handles) - return LIBUSB_ERROR_NO_MEM; - - for_each_event_source(ctx, ievent_source) { - handles[i] = ievent_source->data.os_handle; - i++; - } - - ctx->event_data = handles; - return 0; -} - -int usbi_wait_for_events(struct libusb_context *ctx, - struct usbi_reported_events *reported_events, int timeout_ms) -{ - HANDLE *handles = ctx->event_data; - DWORD num_handles = (DWORD)ctx->event_data_cnt; - DWORD result; - - usbi_dbg(ctx, "WaitForMultipleObjects() for %lu HANDLEs with timeout in %dms", ULONG_CAST(num_handles), timeout_ms); - result = WaitForMultipleObjects(num_handles, handles, FALSE, (DWORD)timeout_ms); - usbi_dbg(ctx, "WaitForMultipleObjects() returned %lu", ULONG_CAST(result)); - if (result == WAIT_TIMEOUT) { - if (usbi_using_timer(ctx)) - goto done; - return LIBUSB_ERROR_TIMEOUT; - } else if (result == WAIT_FAILED) { - usbi_err(ctx, "WaitForMultipleObjects() failed: %s", windows_error_str(0)); - return LIBUSB_ERROR_IO; - } - - result -= WAIT_OBJECT_0; - - /* handles[0] is always the internal signalling event */ - if (result == 0) - reported_events->event_triggered = 1; - else - reported_events->event_triggered = 0; - -#ifdef HAVE_OS_TIMER - /* on timer configurations, handles[1] is the timer */ - if (usbi_using_timer(ctx)) { - /* The WaitForMultipleObjects() function reports the index of - * the first object that became signalled. If the internal - * signalling event was reported, we need to also check and - * report whether the timer is in the signalled state. */ - if (result == 1 || WaitForSingleObject(handles[1], 0) == WAIT_OBJECT_0) - reported_events->timer_triggered = 1; - else - reported_events->timer_triggered = 0; - } else { - reported_events->timer_triggered = 0; - } -#endif - -done: - /* no events are ever reported to the backend */ - reported_events->num_ready = 0; - return LIBUSB_SUCCESS; -} -- cgit v1.2.3