Loading...
/* Copyright (C) 2003-2018 Free Software Foundation, Inc. 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 <time.h> #include <errno.h> #include <cancel.h> #include <sys/syscall.h> #include "kernel-posix-cpu-timers.h" #if defined(__UCLIBC_USE_TIME64__) #include "internal/time64_helpers.h" #endif /* We can simply use the syscall. The CPU clocks are not supported with this function. */ int clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req, struct timespec *rem) { INTERNAL_SYSCALL_DECL (err); int r; if (clock_id == CLOCK_THREAD_CPUTIME_ID) return EINVAL; if (clock_id == CLOCK_PROCESS_CPUTIME_ID) clock_id = MAKE_PROCESS_CPUCLOCK (0, CPUCLOCK_SCHED); if (SINGLE_THREAD_P) { #if defined(__UCLIBC_USE_TIME64__) && defined(__NR_clock_nanosleep_time64) struct __ts64_struct __req, __rem; __req.tv_sec = req->tv_sec; __req.tv_nsec = req->tv_nsec; r = INTERNAL_SYSCALL (clock_nanosleep_time64, err, 4, clock_id, flags, &__req, &__rem); if (rem) { rem->tv_sec = (time_t) __rem.tv_sec; rem->tv_nsec = __rem.tv_nsec; } #else r = INTERNAL_SYSCALL (clock_nanosleep, err, 4, clock_id, flags, req, rem); #endif } else { #ifdef __NEW_THREADS int oldstate = LIBC_CANCEL_ASYNC (); #if defined(__UCLIBC_USE_TIME64__) && defined(__NR_clock_nanosleep_time64) struct __ts64_struct __req, __rem; __req.tv_sec = req->tv_sec; __req.tv_nsec = req->tv_nsec; r = INTERNAL_SYSCALL (clock_nanosleep_time64, err, 4, clock_id, flags, &__req, &__rem); if (rem) { rem->tv_sec = (time_t) __rem.tv_sec; rem->tv_nsec = __rem.tv_nsec; } #else r = INTERNAL_SYSCALL (clock_nanosleep, err, 4, clock_id, flags, req, rem); #endif LIBC_CANCEL_RESET (oldstate); #endif } return (INTERNAL_SYSCALL_ERROR_P (r, err) ? INTERNAL_SYSCALL_ERRNO (r, err) : 0); } |