-#ifdef USBI_TIMERFD_AVAILABLE
-static int disarm_timerfd(struct libusb_context *ctx)
-{
- const struct itimerspec disarm_timer = { { 0, 0 }, { 0, 0 } };
- int r;
-
- usbi_dbg("");
- r = timerfd_settime(ctx->timerfd, 0, &disarm_timer, NULL);
- if (r < 0)
- return LIBUSB_ERROR_OTHER;
- else
- return 0;
-}
-
-/* iterates through the flying transfers, and rearms the timerfd based on the
- * next upcoming timeout.
- * must be called with flying_list locked.
- * returns 0 if there was no timeout to arm, 1 if the next timeout was armed,
- * or a LIBUSB_ERROR code on failure.
- */
-static int arm_timerfd_for_next_timeout(struct libusb_context *ctx)
-{
- struct usbi_transfer *transfer;
-
- list_for_each_entry(transfer, &ctx->flying_transfers, list, struct usbi_transfer) {
- struct timeval *cur_tv = &transfer->timeout;
-
- /* if we've reached transfers of infinite timeout, then we have no
- * arming to do */
- if (!timerisset(cur_tv))
- return 0;
-
- /* act on first transfer that is not already cancelled */
- if (!(transfer->flags & USBI_TRANSFER_TIMED_OUT)) {
- int r;
- const struct itimerspec it = { {0, 0},
- { cur_tv->tv_sec, cur_tv->tv_usec * 1000 } };
- usbi_dbg("next timeout originally %dms", USBI_TRANSFER_TO_LIBUSB_TRANSFER(transfer)->timeout);
- r = timerfd_settime(ctx->timerfd, TFD_TIMER_ABSTIME, &it, NULL);
- if (r < 0)
- return LIBUSB_ERROR_OTHER;
- return 1;
- }
- }
-
- return 0;
-}
-#else
-static int disarm_timerfd(struct libusb_context *ctx)
-{
- (void)ctx;
- return 0;
-}
-static int arm_timerfd_for_next_timeout(struct libusb_context *ctx)
-{
- (void)ctx;
- return 0;
-}
-#endif
-