1/* sched_rr_get_interval -- get the scheduler's SCHED_RR policy time interval.
2 Copyright (C) 2020 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public License as
7 published by the Free Software Foundation; either version 2.1 of the
8 License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If
17 not, see <https://www.gnu.org/licenses/>. */
18
19#include <errno.h>
20#include <stdlib.h>
21#include <time.h>
22#include <sysdep.h>
23#include <kernel-features.h>
24
25int
26__sched_rr_get_interval64 (pid_t pid, struct __timespec64 *tp)
27{
28#ifdef __ASSUME_TIME64_SYSCALLS
29# ifndef __NR_sched_rr_get_interval_time64
30# define __NR_sched_rr_get_interval_time64 __NR_sched_rr_get_interval
31# endif
32 return INLINE_SYSCALL_CALL (sched_rr_get_interval_time64, pid, tp);
33#else
34# ifdef __NR_sched_rr_get_interval_time64
35 int ret = INLINE_SYSCALL_CALL (sched_rr_get_interval_time64, pid, tp);
36 if (ret == 0 || errno != ENOSYS)
37 return ret;
38# endif
39 struct timespec tp32;
40 int retval = INLINE_SYSCALL_CALL (sched_rr_get_interval, pid, &tp32);
41 if (retval == 0)
42 *tp = valid_timespec_to_timespec64 (tp32);
43
44 return retval;
45#endif
46}
47
48#if __TIMESIZE != 64
49libc_hidden_def (__sched_rr_get_interval64)
50
51int
52__sched_rr_get_interval (pid_t pid, struct timespec *tp)
53{
54 int ret;
55 struct __timespec64 tp64;
56
57 ret = __sched_rr_get_interval64 (pid, &tp64);
58
59 if (ret == 0)
60 {
61 if (! in_time_t_range (tp64.tv_sec))
62 {
63 __set_errno (EOVERFLOW);
64 return -1;
65 }
66
67 *tp = valid_timespec64_to_timespec (tp64);
68 }
69
70 return ret;
71}
72#endif
73strong_alias (__sched_rr_get_interval, sched_rr_get_interval)
74