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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_time.c
- *
- * Implementation of system call "gettimeofday", "time" and "clock_gettime".
- */
- #include <shim_internal.h>
- #include <shim_table.h>
- #include <shim_handle.h>
- #include <shim_fs.h>
- #include <pal.h>
- #include <pal_error.h>
- #include <errno.h>
- int shim_do_gettimeofday (struct __kernel_timeval * tv,
- struct __kernel_timezone * tz)
- {
- if (!tv)
- return -EINVAL;
- long time = DkSystemTimeQuery();
- if (time == -1)
- return -PAL_ERRNO;
- tv->tv_sec = time / 1000000;
- tv->tv_usec = time % 1000000;
- return 0;
- }
- time_t shim_do_time (time_t * tloc)
- {
- long time = DkSystemTimeQuery();
- if (time == -1)
- return -PAL_ERRNO;
- time_t t = time / 1000000;
- if (tloc)
- *tloc = t;
- return t;
- }
- int shim_do_clock_gettime (clockid_t which_clock,
- struct timespec * tp)
- {
- /* all clock are the same */
- if (!tp)
- return -EINVAL;
- long time = DkSystemTimeQuery();
- if (time == -1)
- return -PAL_ERRNO;
- tp->tv_sec = time / 1000000;
- tp->tv_nsec = (time % 1000000) * 1000;
- return 0;
- }
- int shim_do_clock_getres (clockid_t which_clock,
- struct timespec * tp)
- {
- /* all clock are the same */
- if (!tp)
- return -EINVAL;
- tp->tv_sec = 0;
- tp->tv_nsec = 1000;
- return 0;
- }
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