2014-06-21 07:51:46 -04:00
|
|
|
/*
|
|
|
|
|
* Copyright (C) 2004,2014 Robin Gareus <robin@gareus.org>
|
|
|
|
|
*
|
|
|
|
|
* This program 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 2 of the License, or
|
|
|
|
|
* (at your option) any later version.
|
|
|
|
|
*
|
|
|
|
|
* This program 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.
|
|
|
|
|
*
|
2019-08-02 22:11:41 -04:00
|
|
|
* You should have received a copy of the GNU General Public License along
|
|
|
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
|
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
2014-06-21 07:51:46 -04:00
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#include <stdint.h>
|
|
|
|
|
#include <sys/select.h>
|
|
|
|
|
|
2024-10-19 18:46:31 -04:00
|
|
|
#include <cstddef>
|
|
|
|
|
|
2014-06-21 07:51:46 -04:00
|
|
|
/* select() sleeps _at most_ a given time.
|
|
|
|
|
* (compared to usleep() or nanosleep() which sleep at least a given time)
|
|
|
|
|
*/
|
|
|
|
|
static void select_sleep (uint64_t usec) {
|
|
|
|
|
if (usec <= 10) return;
|
|
|
|
|
fd_set fd;
|
|
|
|
|
int max_fd=0;
|
|
|
|
|
struct timeval tv;
|
|
|
|
|
tv.tv_sec = usec / 1000000;
|
|
|
|
|
tv.tv_usec = usec % 1000000;
|
|
|
|
|
FD_ZERO (&fd);
|
|
|
|
|
select (max_fd, &fd, NULL, NULL, &tv);
|
|
|
|
|
// on Linux, tv reflects the actual time slept.
|
|
|
|
|
}
|
