X-Git-Url: https://review.openocd.org/gitweb?a=blobdiff_plain;f=src%2Fhelper%2Ftime_support.c;h=05eaf0a9d08e4cfae9a1dddf28c12d906813a2fb;hb=877cec20dca6e78f9f029f0f173879cda101a6c2;hp=1f55bc20763c81349462b00bff14e70998aa1e49;hpb=c0b5ca6d17273aff849bc6546c7388562b751225;p=openocd.git

diff --git a/src/helper/time_support.c b/src/helper/time_support.c
index 1f55bc2076..05eaf0a9d0 100644
--- a/src/helper/time_support.c
+++ b/src/helper/time_support.c
@@ -19,10 +19,9 @@
  *   GNU General Public License for more details.                          *
  *                                                                         *
  *   You should have received a copy of the GNU General Public License     *
- *   along with this program; if not, write to the                         *
- *   Free Software Foundation, Inc.,                                       *
- *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  ***************************************************************************/
+
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
@@ -32,8 +31,7 @@
 /* calculate difference between two struct timeval values */
 int timeval_subtract(struct timeval *result, struct timeval *x, struct timeval *y)
 {
-	if (x->tv_usec < y->tv_usec)
-	{
+	if (x->tv_usec < y->tv_usec) {
 		int nsec = (y->tv_usec - x->tv_usec) / 1000000 + 1;
 		y->tv_usec -= 1000000 * nsec;
 		y->tv_sec += nsec;
@@ -56,8 +54,7 @@ int timeval_add_time(struct timeval *result, long sec, long usec)
 	result->tv_sec += sec;
 	result->tv_usec += usec;
 
-	while (result->tv_usec > 1000000)
-	{
+	while (result->tv_usec > 1000000) {
 		result->tv_usec -= 1000000;
 		result->tv_sec++;
 	}
@@ -65,6 +62,21 @@ int timeval_add_time(struct timeval *result, long sec, long usec)
 	return 0;
 }
 
+/* compare two timevals and return -1/0/+1 accordingly */
+int timeval_compare(const struct timeval *x, const struct timeval *y)
+{
+	if (x->tv_sec < y->tv_sec)
+		return -1;
+	else if (x->tv_sec > y->tv_sec)
+		return 1;
+	else if (x->tv_usec < y->tv_usec)
+		return -1;
+	else if (x->tv_usec > y->tv_usec)
+		return 1;
+	else
+		return 0;
+}
+
 int duration_start(struct duration *duration)
 {
 	return gettimeofday(&duration->start, NULL);
@@ -79,14 +91,14 @@ int duration_measure(struct duration *duration)
 	return retval;
 }
 
-float duration_elapsed(struct duration *duration)
+float duration_elapsed(const struct duration *duration)
 {
 	float t = duration->elapsed.tv_sec;
 	t += (float)duration->elapsed.tv_usec / 1000000.0;
 	return t;
 }
 
-float duration_kbps(struct duration *duration, size_t count)
+float duration_kbps(const struct duration *duration, size_t count)
 {
 	return count / (1024.0 * duration_elapsed(duration));
 }