39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
/* -*-comment-start: "//";comment-end:""-*-
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* GNU Mes --- Maxwell Equations of Software
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* Copyright © 2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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*
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* This file is part of GNU Mes.
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*
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* GNU Mes is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* GNU Mes is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <unistd.h>
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#include <sys/time.h>
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unsigned int
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alarm (unsigned int seconds)
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{
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#if !__MESC__
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struct itimerval old;
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struct itimerval new;
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new.it_interval.tv_usec = 0;
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new.it_interval.tv_sec = 0;
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new.it_value.tv_usec = 0;
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new.it_value.tv_sec = (long int) seconds;
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if (setitimer (ITIMER_REAL, &new, &old) < 0)
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return 0;
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return old.it_value.tv_sec;
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#endif
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}
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