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.

cpukit/ChangeLog

@@ -1,3 +1,10 @@
+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.
+
 2007-05-16	Ralf Corsépius <ralf.corsepius@rtems.org>
 
 	* score/src/objectgetnameasstring.c: Remove bogus ifdef

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 \

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

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;
+}

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;
+}