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- /* -*- mode:c; c-file-style:"k&r"; c-basic-offset: 4; tab-width:4; indent-tabs-mode:nil; mode:auto-fill; fill-column:78; -*- */
- /* vim: set ts=4 sw=4 et tw=78 fo=cqt wm=0: */
- /* Copyright (C) 2014 OSCAR lab, Stony Brook University
- This file is part of Graphene Library OS.
- Graphene Library OS 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.
- Graphene Library OS 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 this program. If not, see <http://www.gnu.org/licenses/>. */
- /*
- * shim_sleep.c
- *
- * Implementation of system call "pause" and "nanosleep".
- */
- #include <shim_internal.h>
- #include <shim_utils.h>
- #include <shim_table.h>
- #include <shim_handle.h>
- #include <shim_vma.h>
- #include <pal.h>
- #include <pal_error.h>
- #include <errno.h>
- #define SHIM_DEFAULT_SLEEP 1000
- int shim_do_pause (void)
- {
- while (1) {
- unsigned long ret = DkThreadDelayExecution(SHIM_DEFAULT_SLEEP);
- if (!ret)
- break;
- }
- return 0;
- }
- int shim_do_nanosleep (const struct __kernel_timespec * rqtp,
- struct __kernel_timespec * rmtp)
- {
- if (!rqtp)
- return -EFAULT;
- unsigned long time = rqtp->tv_sec * 1000000L + rqtp->tv_nsec / 1000;
- unsigned long ret = DkThreadDelayExecution(time);
- if (ret < time) {
- if (rmtp) {
- unsigned long remtime = time - ret;
- rmtp->tv_sec = remtime / 1000000L;
- rmtp->tv_nsec = (remtime - rmtp->tv_sec * 1000) * 1000;
- }
- return -EINTR;
- }
- return 0;
- }
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