diff options
author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2007-05-16 15:04:25 +0000 |
---|---|---|
committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2007-05-16 15:04:25 +0000 |
commit | f919582d8faf16aa161982aa0201c115e15365f4 (patch) | |
tree | 559439c6cff1a482d77b24fe349dab4f48ddc7f1 /cpukit/score | |
parent | 2007-05-16 Ralf Corsépius <ralf.corsepius@rtems.org> (diff) | |
download | rtems-f919582d8faf16aa161982aa0201c115e15365f4.tar.bz2 |
2007-05-16 Joel Sherrill <joel.sherrill@oarcorp.com>
* score/Makefile.am, score/include/rtems/score/timespec.h: Add division
and greater than operations for timespecs.
* score/src/timespecdivide.c, score/src/timespecgreaterthan.c:
New files.
Diffstat (limited to 'cpukit/score')
-rw-r--r-- | cpukit/score/Makefile.am | 4 | ||||
-rw-r--r-- | cpukit/score/include/rtems/score/timespec.h | 33 | ||||
-rw-r--r-- | cpukit/score/src/timespecdivide.c | 52 | ||||
-rw-r--r-- | cpukit/score/src/timespecgreaterthan.c | 42 |
4 files changed, 129 insertions, 2 deletions
diff --git a/cpukit/score/Makefile.am b/cpukit/score/Makefile.am index 3699743ce9..2b1c25e513 100644 --- a/cpukit/score/Makefile.am +++ b/cpukit/score/Makefile.am @@ -147,8 +147,8 @@ libscore_a_SOURCES += src/threadq.c src/threadqdequeue.c \ ## TIMESPEC_C_FILES libscore_a_SOURCES += src/timespecaddto.c src/timespecfromticks.c \ - src/timespecisvalid.c src/timespeclessthan.c src/timespecsubtract.c \ - src/timespectoticks.c + src/timespecisvalid.c src/timespeclessthan.c src/timespecgreaterthan.c \ + src/timespecsubtract.c src/timespectoticks.c src/timespecdivide.c ## TOD_C_FILES libscore_a_SOURCES += src/coretod.c src/coretodset.c src/coretodget.c \ diff --git a/cpukit/score/include/rtems/score/timespec.h b/cpukit/score/include/rtems/score/timespec.h index b8c4d16f24..2ffde63fc2 100644 --- a/cpukit/score/include/rtems/score/timespec.h +++ b/cpukit/score/include/rtems/score/timespec.h @@ -62,6 +62,21 @@ boolean _Timespec_Less_than( const struct timespec *rhs ); +/** @brief Timespec Greater Than Operator + * + * This method is the greater than operator for timespecs. + * + * @param[in] lhs is the left hand side timespec + * @param[in] rhs is the left hand side timespec + * + * @return This method returns true if @a lhs is greater than the @a rhs and + * false otherwise. + */ +boolean _Timespec_Greater_than( + const struct timespec *lhs, + const struct timespec *rhs +); + /** @brief Add to a Timespec * * This routine adds two timespecs. The second argument is added @@ -120,6 +135,24 @@ void _Timespec_Subtract( struct timespec *result ); +/** @brief Divide Timespec + * + * This routine divides a timespec by an integer value. The expected + * use is to assist in benchmark calculations where you typically + * divide a duration by a number of iterations. + * + * @param[in] time is the total + * @param[in] iterations is the number of iterations + * @param[in] result is the average time. + * + * @return This method fills in @a result. + */ +void _Timespec_Divide( + const struct timespec *time, + uint32_t iterations, + struct timespec *result +); + #ifdef __cplusplus } #endif diff --git a/cpukit/score/src/timespecdivide.c b/cpukit/score/src/timespecdivide.c new file mode 100644 index 0000000000..0535c22e11 --- /dev/null +++ b/cpukit/score/src/timespecdivide.c @@ -0,0 +1,52 @@ +/** + * @file score/src/timespecdivide.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> + +void _Timespec_Divide( + const struct timespec *time, + uint32_t iterations, + struct timespec *result +) +{ + uint64_t t; + + /* + * For math simplicity just convert the timespec to nanoseconds + * in a 64-bit integer. + */ + t = time->tv_sec * TOD_NANOSECONDS_PER_SECOND; + t += time->tv_nsec; + + /* + * Divide to get nanoseconds per iteration + */ + + t /= iterations; + + /* + * Put it back in the timespec result + */ + + result->tv_sec = t / TOD_NANOSECONDS_PER_SECOND; + result->tv_nsec = t % TOD_NANOSECONDS_PER_SECOND; +} diff --git a/cpukit/score/src/timespecgreaterthan.c b/cpukit/score/src/timespecgreaterthan.c new file mode 100644 index 0000000000..5541760212 --- /dev/null +++ b/cpukit/score/src/timespecgreaterthan.c @@ -0,0 +1,42 @@ +/** + * @file score/src/timespecgreaterthan.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 <sys/types.h> + +#include <rtems/system.h> +#include <rtems/score/timespec.h> +#include <rtems/score/tod.h> + +boolean _Timespec_Greater_than( + const struct timespec *lhs, + const struct timespec *rhs +) +{ + if ( lhs->tv_sec > rhs->tv_sec ) + return TRUE; + + if ( lhs->tv_sec < rhs->tv_sec ) + return FALSE; + + /* ASSERT: lhs->tv_sec == rhs->tv_sec */ + if ( lhs->tv_nsec > rhs->tv_nsec ) + return TRUE; + + return FALSE; +} |