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/*
Unix SMB/Netbios implementation.
Version 3.0
Samba select/poll implementation
Copyright (C) Andrew Tridgell 1992-1998
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 3 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.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "replace.h"
#include "system/filesys.h"
#include "system/select.h"
#include "lib/util/select.h"
#include "lib/util/time.h"
int sys_poll_intr(struct pollfd *fds, int num_fds, int timeout)
{
int orig_timeout = timeout;
struct timespec start;
int ret;
clock_gettime_mono(&start);
while (true) {
struct timespec now;
int64_t elapsed;
ret = poll(fds, num_fds, timeout);
if (ret != -1) {
break;
}
if (errno != EINTR) {
break;
}
/* Infinite timeout, no need to adjust. */
if (timeout < 0) {
continue;
}
clock_gettime_mono(&now);
elapsed = nsec_time_diff(&now, &start) / 1000000;
timeout = orig_timeout - elapsed;
/* Unlikely, but might happen eg. when getting traced.
* Make sure we're not hanging in this case.
*/
if (timeout < 0) {
timeout = 0;
}
};
return ret;
}
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