36 lines
1.2 KiB
C
36 lines
1.2 KiB
C
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/*
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* Copyright (C) 2004,2014 Robin Gareus <robin@gareus.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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. 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 this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <stdint.h>
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#include <sys/select.h>
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/* select() sleeps _at most_ a given time.
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* (compared to usleep() or nanosleep() which sleep at least a given time)
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*/
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static void select_sleep (uint64_t usec) {
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if (usec <= 10) return;
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fd_set fd;
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int max_fd=0;
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struct timeval tv;
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tv.tv_sec = usec / 1000000;
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tv.tv_usec = usec % 1000000;
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FD_ZERO (&fd);
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select (max_fd, &fd, NULL, NULL, &tv);
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// on Linux, tv reflects the actual time slept.
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}
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