diff options
Diffstat (limited to 'sysdeps/unix/clock_nanosleep.c')
| -rw-r--r-- | sysdeps/unix/clock_nanosleep.c | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/sysdeps/unix/clock_nanosleep.c b/sysdeps/unix/clock_nanosleep.c deleted file mode 100644 index 8f4d348810..0000000000 --- a/sysdeps/unix/clock_nanosleep.c +++ /dev/null @@ -1,101 +0,0 @@ -/* High-resolution sleep with the specified clock. - Copyright (C) 2000-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <assert.h> -#include <errno.h> -#include <time.h> -#include <hp-timing.h> -#include <sysdep-cancel.h> - -#if HP_TIMING_AVAIL -# define CPUCLOCK_P(clock) \ - ((clock) == CLOCK_PROCESS_CPUTIME_ID \ - || ((clock) & ((1 << CLOCK_IDFIELD_SIZE) - 1)) == CLOCK_THREAD_CPUTIME_ID) -#else -# define CPUCLOCK_P(clock) 0 -#endif - -#ifndef INVALID_CLOCK_P -# define INVALID_CLOCK_P(cl) \ - ((cl) < CLOCK_REALTIME || (cl) > CLOCK_THREAD_CPUTIME_ID) -#endif - - -/* This implementation assumes that these is only a `nanosleep' system - call. So we have to remap all other activities. */ -int -__clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req, - struct timespec *rem) -{ - struct timespec now; - - if (__builtin_expect (req->tv_nsec, 0) < 0 - || __builtin_expect (req->tv_nsec, 0) >= 1000000000) - return EINVAL; - - if (clock_id == CLOCK_THREAD_CPUTIME_ID) - return EINVAL; /* POSIX specifies EINVAL for this case. */ - -#ifdef SYSDEP_NANOSLEEP - SYSDEP_NANOSLEEP; -#endif - - if (CPUCLOCK_P (clock_id)) - return ENOTSUP; - - if (INVALID_CLOCK_P (clock_id)) - return EINVAL; - - /* If we got an absolute time, remap it. */ - if (flags == TIMER_ABSTIME) - { - long int nsec; - long int sec; - - /* Make sure we use safe data types. */ - assert (sizeof (sec) >= sizeof (now.tv_sec)); - - /* Get the current time for this clock. */ - if (__builtin_expect (clock_gettime (clock_id, &now), 0) != 0) - return errno; - - /* Compute the difference. */ - nsec = req->tv_nsec - now.tv_nsec; - sec = req->tv_sec - now.tv_sec - (nsec < 0); - if (sec < 0) - /* The time has already elapsed. */ - return 0; - - now.tv_sec = sec; - now.tv_nsec = nsec + (nsec < 0 ? 1000000000 : 0); - - /* From now on this is our time. */ - req = &now; - - /* Make sure we are not modifying the struct pointed to by REM. */ - rem = NULL; - } - else if (__builtin_expect (flags, 0) != 0) - return EINVAL; - else if (clock_id != CLOCK_REALTIME) - /* Not supported. */ - return ENOTSUP; - - return __builtin_expect (nanosleep (req, rem), 0) ? errno : 0; -} -weak_alias (__clock_nanosleep, clock_nanosleep) |