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Diffstat (limited to 'cpukit/score/src/timespectoticks.c')
-rw-r--r-- | cpukit/score/src/timespectoticks.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/cpukit/score/src/timespectoticks.c b/cpukit/score/src/timespectoticks.c new file mode 100644 index 0000000000..550ce617b3 --- /dev/null +++ b/cpukit/score/src/timespectoticks.c @@ -0,0 +1,49 @@ +/** + * @file score/src/timespectoticks.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 <rtems/score/timespec.h> +#include <sys/types.h> +#include <rtems/score/tod.h> +#include <rtems/score/watchdog.h> + +/** + * + * This routines converts a timespec to the corresponding number of ticks. + */ + +uint32_t _Timespec_To_ticks( + const struct timespec *time +) +{ + uint32_t ticks; + + if ( (time->tv_sec == 0) && (time->tv_nsec == 0) ) + return 0; + + ticks = time->tv_sec * TOD_TICKS_PER_SECOND; + + ticks += (time->tv_nsec / TOD_NANOSECONDS_PER_MICROSECOND) / + _TOD_Microseconds_per_tick; + + if (ticks) + return ticks; + + return 1; +} |