mirror of
https://github.com/torvalds/linux
synced 2024-10-16 16:29:20 +00:00
180a9797b0
This call is trivial to implement based on select() to complete sleep() and msleep(), let's add it. Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
|
|
/*
|
|
* unistd function definitions for NOLIBC
|
|
* Copyright (C) 2017-2022 Willy Tarreau <w@1wt.eu>
|
|
*/
|
|
|
|
#ifndef _NOLIBC_UNISTD_H
|
|
#define _NOLIBC_UNISTD_H
|
|
|
|
#include "std.h"
|
|
#include "arch.h"
|
|
#include "types.h"
|
|
#include "sys.h"
|
|
|
|
|
|
static __attribute__((unused))
|
|
int msleep(unsigned int msecs)
|
|
{
|
|
struct timeval my_timeval = { msecs / 1000, (msecs % 1000) * 1000 };
|
|
|
|
if (sys_select(0, 0, 0, 0, &my_timeval) < 0)
|
|
return (my_timeval.tv_sec * 1000) +
|
|
(my_timeval.tv_usec / 1000) +
|
|
!!(my_timeval.tv_usec % 1000);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static __attribute__((unused))
|
|
unsigned int sleep(unsigned int seconds)
|
|
{
|
|
struct timeval my_timeval = { seconds, 0 };
|
|
|
|
if (sys_select(0, 0, 0, 0, &my_timeval) < 0)
|
|
return my_timeval.tv_sec + !!my_timeval.tv_usec;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static __attribute__((unused))
|
|
int usleep(unsigned int usecs)
|
|
{
|
|
struct timeval my_timeval = { usecs / 1000000, usecs % 1000000 };
|
|
|
|
return sys_select(0, 0, 0, 0, &my_timeval);
|
|
}
|
|
|
|
static __attribute__((unused))
|
|
int tcsetpgrp(int fd, pid_t pid)
|
|
{
|
|
return ioctl(fd, TIOCSPGRP, &pid);
|
|
}
|
|
|
|
#endif /* _NOLIBC_UNISTD_H */
|