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Diffstat (limited to '')
-rw-r--r-- | cpukit/score/src/timespecaddto.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/cpukit/score/src/timespecaddto.c b/cpukit/score/src/timespecaddto.c new file mode 100644 index 0000000000..400b675405 --- /dev/null +++ b/cpukit/score/src/timespecaddto.c @@ -0,0 +1,51 @@ +/** + * @file score/src//timespecaddto.c + */ + +/* + * COPYRIGHT (c) 1989-2007. + * On-Line Applications Research Corporation (OAR). + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ + +#if HAVE_CONFIG_H +#include "config.h" +#endif + +#include <rtems/system.h> +#include <sys/types.h> +#include <rtems/score/timespec.h> +#include <rtems/score/tod.h> +#include <rtems/score/watchdog.h> + +/** + * + * This routines adds two timespecs. The second argument is added + * to the first. + */ + +uint32_t _Timespec_Add_to( + struct timespec *time, + const struct timespec *add +) +{ + uint32_t seconds = add->tv_sec; + + /* Add the basics */ + time->tv_sec += add->tv_sec; + time->tv_nsec += add->tv_nsec; + + /* Now adjust it so nanoseconds is in range */ + while ( time->tv_nsec >= TOD_NANOSECONDS_PER_SECOND ) { + time->tv_nsec -= TOD_NANOSECONDS_PER_SECOND; + time->tv_sec++; + seconds++; + } + + return seconds; +} |