84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
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/* ****************************************************************************
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* utils/sleep.c -- Sleep in a cross-platform way.
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* Copyright (C) 2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
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*
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* This file is part of libcasio.
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* libcasio is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 3.0 of the License,
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* or (at your option) any later version.
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*
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* libcasio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with libcasio; if not, see <http://www.gnu.org/licenses/>.
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* ************************************************************************* */
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#include "../internals.h"
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/* ************************************************************************* */
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/* Microsoft Windows environment */
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/* ************************************************************************* */
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#if defined(__WINDOWS__)
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# define default_callback &casio_winsleep
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# include <windows.h>
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static void casio_winsleep(unsigned long ms)
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{
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Sleep(ms);
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}
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/* ************************************************************************* */
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/* UNIX environments */
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/* ************************************************************************* */
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#elif defined(__unix__) || defined(__unix)
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# define default_callback &casio_unixsleep
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# include <unistd.h>
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# include <time.h>
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static void casio_unixsleep(unsigned long ms)
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{
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struct timespec requested_timestamp;
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requested_timestamp.tv_sec = ms / 1000;
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requested_timestamp.tv_nsec = ms * 1000;
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nanosleep(&requested_timestamp, NULL);
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}
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/* ************************************************************************* */
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/* Default and main function */
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/* ************************************************************************* */
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#else
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# define default_callback NULL
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#endif
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static casio_sleep_t *casio_sleep_callback = default_callback;
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/**
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* casio_set_sleep:
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* Set the sleep function.
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*
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* @arg func the function to set.
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*/
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void casio_set_sleep(casio_sleep_t *func)
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{
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casio_sleep_callback = func;
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}
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/**
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* casio_sleep:
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* Sleep.
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*
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* @arg ms the milliseconds.
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*/
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int casio_sleep(unsigned long ms)
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{
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if (!casio_sleep_callback)
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return (casio_error_op);
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if (!ms) return (0);
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(*casio_sleep_callback)(ms);
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return (0);
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}
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