| 1 | /* sched_rr_get_interval -- get the scheduler's SCHED_RR policy time interval. |
|---|
| 2 | Copyright (C) 2020-2024 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 | |
|---|
| 25 | int |
|---|
| 26 | __sched_rr_get_interval64 (pid_t pid, struct __timespec64 *tp) |
|---|
| 27 | { |
|---|
| 28 | #ifndef __NR_sched_rr_get_interval_time64 |
|---|
| 29 | # define __NR_sched_rr_get_interval_time64 __NR_sched_rr_get_interval |
|---|
| 30 | #endif |
|---|
| 31 | int ret = INLINE_SYSCALL_CALL (sched_rr_get_interval_time64, pid, tp); |
|---|
| 32 | #ifndef __ASSUME_TIME64_SYSCALLS |
|---|
| 33 | if (ret == 0 || errno != ENOSYS) |
|---|
| 34 | return ret; |
|---|
| 35 | |
|---|
| 36 | struct timespec tp32; |
|---|
| 37 | ret = INLINE_SYSCALL_CALL (sched_rr_get_interval, pid, &tp32); |
|---|
| 38 | if (ret == 0) |
|---|
| 39 | *tp = valid_timespec_to_timespec64 (tp32); |
|---|
| 40 | #endif |
|---|
| 41 | return ret; |
|---|
| 42 | } |
|---|
| 43 | |
|---|
| 44 | #if __TIMESIZE != 64 |
|---|
| 45 | libc_hidden_def (__sched_rr_get_interval64) |
|---|
| 46 | |
|---|
| 47 | int |
|---|
| 48 | __sched_rr_get_interval (pid_t pid, struct timespec *tp) |
|---|
| 49 | { |
|---|
| 50 | int ret; |
|---|
| 51 | struct __timespec64 tp64; |
|---|
| 52 | |
|---|
| 53 | ret = __sched_rr_get_interval64 (pid, &tp64); |
|---|
| 54 | |
|---|
| 55 | if (ret == 0) |
|---|
| 56 | { |
|---|
| 57 | if (! in_time_t_range (tp64.tv_sec)) |
|---|
| 58 | { |
|---|
| 59 | __set_errno (EOVERFLOW); |
|---|
| 60 | return -1; |
|---|
| 61 | } |
|---|
| 62 | |
|---|
| 63 | *tp = valid_timespec64_to_timespec (tp64); |
|---|
| 64 | } |
|---|
| 65 | |
|---|
| 66 | return ret; |
|---|
| 67 | } |
|---|
| 68 | #endif |
|---|
| 69 | strong_alias (__sched_rr_get_interval, sched_rr_get_interval) |
|---|
| 70 | |
|---|
