forked from Imagelibrary/rtems
8ff5e59dd4
* nsecs/init.c: Provide timespec manipulation routines in the SuperCore. Use them everywhere possible. Perhaps they should be part of the public API so this test and others can use them without peeking into the bowels.
129 lines
2.7 KiB
C
129 lines
2.7 KiB
C
/*
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* Nanoseconds accuracy timestamp test
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*/
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/* COPYRIGHT (c) 1989-2007.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.com/license/LICENSE.
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*
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* $Id$
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*/
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#define CONFIGURE_INIT
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#include <rtems.h>
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#include <inttypes.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/time.h>
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char *my_ctime( time_t t )
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{
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static char b[32];
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ctime_r(&t, b);
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b[ strlen(b) - 1] = '\0';
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return b;
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}
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void subtract_em(
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struct timespec *start,
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struct timespec *stop,
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struct timespec *t
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)
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{
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extern void _Timespec_Subtract(
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const struct timespec *start,
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const struct timespec *end,
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struct timespec *result
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);
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t->tv_sec = 0;
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t->tv_nsec = 0;
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_Timespec_Subtract( start, stop, t );
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}
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volatile int i;
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rtems_task Init(
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rtems_task_argument argument
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)
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{
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rtems_status_code status;
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rtems_time_of_day time;
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int index;
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puts( "\n\n*** NANOSECOND CLOCK TEST ***" );
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time.year = 2007;
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time.month = 03;
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time.day = 24;
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time.hour = 11;
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time.minute = 15;
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time.second = 0;
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time.ticks = 0;
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status = rtems_clock_set( &time );
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/*
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* Iterate 10 times showing difference in TOD
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*/
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printf( "10 iterations of getting TOD\n" );
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for (index=0 ; index <10 ; index++ ) {
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struct timespec start, stop;
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struct timespec diff;
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clock_gettime( CLOCK_REALTIME, &start );
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clock_gettime( CLOCK_REALTIME, &stop );
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subtract_em( &start, &stop, &diff );
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#if 0
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printf( "%d:%d %d:%d ",
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start.tv_sec, start.tv_nsec,
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stop.tv_sec, stop.tv_nsec,
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);
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#else
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printf( "Start: %s:%d\nStop : %s:%d",
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my_ctime(start.tv_sec), start.tv_nsec,
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my_ctime(stop.tv_sec), stop.tv_nsec
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);
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#endif
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printf( " --> %d:%d\n", diff.tv_sec, diff.tv_nsec );
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}
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/*
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* Iterate 10 times showing difference in Uptime
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*/
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printf( "\n10 iterations of getting Uptime\n" );
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for (index=0 ; index <10 ; index++ ) {
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struct timespec start, stop;
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struct timespec diff;
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rtems_clock_get_uptime( &start );
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rtems_clock_get_uptime( &stop );
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subtract_em( &start, &stop, &diff );
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printf( "%d:%d %d:%d --> %d:%d\n",
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start.tv_sec, start.tv_nsec,
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stop.tv_sec, stop.tv_nsec,
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diff.tv_sec, diff.tv_nsec
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);
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}
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puts( "*** END OF NANOSECOND CLOCK TEST ***" );
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exit(0);
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}
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#include <bsp.h> /* for device driver prototypes */
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#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
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#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
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#define CONFIGURE_MICROSECONDS_PER_TICK 1000
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#define CONFIGURE_MAXIMUM_TASKS 1
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#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
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#include <rtems/confdefs.h>
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