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authorcvs2svn <cvs2svn@FreeBSD.org>1998-01-10 23:00:07 +0000
committercvs2svn <cvs2svn@FreeBSD.org>1998-01-10 23:00:07 +0000
commit7c6e96080c4fb49bf912942804477d202a53396c (patch)
tree876b1afcb203be407dbb2ddfc69653f78b8680c2 /lib/libpthread/thread/thr_nanosleep.c
parent1a06f650e6ca43e02260e8d252597fbed2cea73e (diff)
downloadFreeBSD-src-7c6e96080c4fb49bf912942804477d202a53396c.zip
FreeBSD-src-7c6e96080c4fb49bf912942804477d202a53396c.tar.gz
This commit was manufactured by cvs2svn to create branch 'JB'.
Diffstat (limited to 'lib/libpthread/thread/thr_nanosleep.c')
-rw-r--r--lib/libpthread/thread/thr_nanosleep.c118
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
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--- 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, &current_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, &current_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
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