1 | /* Copyright (C) 2003-2019 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <time.h> |
19 | #include <errno.h> |
20 | |
21 | #include <sysdep-cancel.h> |
22 | #include "kernel-posix-cpu-timers.h" |
23 | |
24 | |
25 | /* We can simply use the syscall. The CPU clocks are not supported |
26 | with this function. */ |
27 | int |
28 | __clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req, |
29 | struct timespec *rem) |
30 | { |
31 | if (clock_id == CLOCK_THREAD_CPUTIME_ID) |
32 | return EINVAL; |
33 | if (clock_id == CLOCK_PROCESS_CPUTIME_ID) |
34 | clock_id = MAKE_PROCESS_CPUCLOCK (0, CPUCLOCK_SCHED); |
35 | |
36 | /* If the call is interrupted by a signal handler or encounters an error, |
37 | it returns a positive value similar to errno. */ |
38 | INTERNAL_SYSCALL_DECL (err); |
39 | int r = INTERNAL_SYSCALL_CANCEL (clock_nanosleep, err, clock_id, flags, |
40 | req, rem); |
41 | return (INTERNAL_SYSCALL_ERROR_P (r, err) |
42 | ? INTERNAL_SYSCALL_ERRNO (r, err) : 0); |
43 | } |
44 | weak_alias (__clock_nanosleep, clock_nanosleep) |
45 | |