Clean all but t_open timestamps to NAN at end of transaction.

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@1684 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishd/cache_center.c

@@ -58,6 +58,7 @@ DOT start -> recv [style=bold,color=green,weight=4]
 
 #include <stdio.h>
 #include <errno.h>
+#include <math.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
@@ -196,8 +197,11 @@ cnt_done(struct sess *sp)
 	    sp->xid, sp->t_req, sp->t_end, dh, dp, da);
 
 	sp->xid = 0;
-	sp->t_open = sp->t_end;
 	SES_Charge(sp);
+	sp->t_open = sp->t_end;
+	sp->t_req = NAN;
+	sp->t_resp = NAN;
+	sp->t_end = NAN;
 	WSL_Flush(sp->wrk);
 	if (sp->fd >= 0 && sp->doclose != NULL)
 		vca_close_session(sp, sp->doclose);

bin/varnishd/cache_session.c

@@ -229,6 +229,7 @@ SES_Charge(struct sess *sp)
 
 	ses_sum_acct(&sp->acct, a);
 	if (sp->srcaddr != NULL) {
+		/* XXX: only report once per second ? */
 		CHECK_OBJ(sp->srcaddr, SRCADDR_MAGIC);
 		LOCK(&sp->srcaddr->sah->mtx);
 		ses_sum_acct(&sp->srcaddr->acct, a);