diff options
Diffstat (limited to 'lib/libpthread/thread/thr_nanosleep.c')
| -rw-r--r-- | lib/libpthread/thread/thr_nanosleep.c | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/lib/libpthread/thread/thr_nanosleep.c b/lib/libpthread/thread/thr_nanosleep.c deleted file mode 100644 index 39c7dad..0000000 --- a/lib/libpthread/thread/thr_nanosleep.c +++ /dev/null @@ -1,118 +0,0 @@ -/* - * Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by John Birrell. - * 4. Neither the name of the author nor the names of any co-contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - */ -#include <stdio.h> -#include <errno.h> -#ifdef _THREAD_SAFE -#include <pthread.h> -#include "pthread_private.h" - -int -nanosleep(const struct timespec * time_to_sleep, - struct timespec * time_remaining) -{ - int ret = 0; - struct timespec current_time; - struct timespec current_time1; - struct timespec remaining_time; - struct timeval tv; - - /* Check if the time to sleep is legal: */ - if (time_to_sleep == NULL || time_to_sleep->tv_nsec < 0 || time_to_sleep->tv_nsec > 1000000000) { - /* Return an EINVAL error : */ - errno = EINVAL; - ret = -1; - } else { - /* Get the current time: */ - gettimeofday(&tv, NULL); - TIMEVAL_TO_TIMESPEC(&tv, ¤t_time); - - /* Calculate the time for the current thread to wake up: */ - _thread_run->wakeup_time.tv_sec = current_time.tv_sec + time_to_sleep->tv_sec; - _thread_run->wakeup_time.tv_nsec = current_time.tv_nsec + time_to_sleep->tv_nsec; - - /* Check if the nanosecond field has overflowed: */ - if (_thread_run->wakeup_time.tv_nsec >= 1000000000) { - /* Wrap the nanosecond field: */ - _thread_run->wakeup_time.tv_sec += 1; - _thread_run->wakeup_time.tv_nsec -= 1000000000; - } - - /* Reschedule the current thread to sleep: */ - _thread_kern_sched_state(PS_SLEEP_WAIT, __FILE__, __LINE__); - - /* Get the current time: */ - gettimeofday(&tv, NULL); - TIMEVAL_TO_TIMESPEC(&tv, ¤t_time1); - - /* Calculate the remaining time to sleep: */ - remaining_time.tv_sec = time_to_sleep->tv_sec + current_time.tv_sec - current_time1.tv_sec; - remaining_time.tv_nsec = time_to_sleep->tv_nsec + current_time.tv_nsec - current_time1.tv_nsec; - - /* Check if the nanosecond field has underflowed: */ - if (remaining_time.tv_nsec < 0) { - /* Handle the underflow: */ - remaining_time.tv_sec -= 1; - remaining_time.tv_nsec += 1000000000; - } - - /* Check if the nanosecond field has overflowed: */ - if (remaining_time.tv_nsec >= 1000000000) { - /* Handle the overflow: */ - remaining_time.tv_sec += 1; - remaining_time.tv_nsec -= 1000000000; - } - - /* Check if the sleep was longer than the required time: */ - if (remaining_time.tv_sec < 0) { - /* Reset the time left: */ - remaining_time.tv_sec = 0; - remaining_time.tv_nsec = 0; - } - - /* Check if the time remaining is to be returned: */ - if (time_remaining != NULL) { - /* Return the actual time slept: */ - time_remaining->tv_sec = remaining_time.tv_sec; - time_remaining->tv_nsec = remaining_time.tv_nsec; - } - - /* Check if the entire sleep was not completed: */ - if (remaining_time.tv_nsec != 0 || remaining_time.tv_sec != 0) { - /* Return an EINTR error : */ - errno = EINTR; - ret = -1; - } - } - return (ret); -} -#endif |
