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- /* millisleep.c - generic millisleep function.
- * The generic implementation of these functions can be used for architectures
- * or platforms that do not have a more specialized implementation. */
- /*
- * GRUB -- GRand Unified Bootloader
- * Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2006,2007,2008 Free Software Foundation, Inc.
- *
- * GRUB is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * GRUB 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
- */
- #include <grub/misc.h>
- #include <grub/time.h>
- void
- grub_millisleep (grub_uint32_t ms)
- {
- grub_uint64_t start;
- start = grub_get_time_ms ();
- /* Instead of setting an end time and looping while the current time is
- less than that, comparing the elapsed sleep time with the desired sleep
- time handles the (unlikely!) case that the timer would wrap around
- during the sleep. */
- while (grub_get_time_ms () - start < ms)
- grub_cpu_idle ();
- }
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