From 6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 18:29:51 +0200 Subject: Adding upstream version 2.06. Signed-off-by: Daniel Baumann --- grub-core/kern/generic/millisleep.c | 39 +++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 grub-core/kern/generic/millisleep.c (limited to 'grub-core/kern/generic/millisleep.c') diff --git a/grub-core/kern/generic/millisleep.c b/grub-core/kern/generic/millisleep.c new file mode 100644 index 0000000..9d5971f --- /dev/null +++ b/grub-core/kern/generic/millisleep.c @@ -0,0 +1,39 @@ +/* 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 . + */ + +#include +#include + +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 (); +} -- cgit v1.2.3