From afdb6e580328bfea9570035f4d30e1c80ba6034a Mon Sep 17 00:00:00 2001
From: oetiker <oetiker@a5681a0c-68f1-0310-ab6d-d61299d08faa>
Date: Thu, 22 Sep 2005 20:18:12 +0000
Subject: [PATCH] do not 'reload' data if you already have it!

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.2/program@689 a5681a0c-68f1-0310-ab6d-d61299d08faa
---
 src/rrd_graph.c        | 9 +++++----
 src/rrd_graph.h        | 2 ++
 src/rrd_graph_helper.c | 3 +++
 3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/src/rrd_graph.c b/src/rrd_graph.c
index d80b74c..97f6d68 100644
--- a/src/rrd_graph.c
+++ b/src/rrd_graph.c
@@ -691,7 +691,7 @@ data_fetch(image_desc_t *im )
     int i,ii;
     int		skip;
 
-    /* pull the data from the log files ... */
+    /* pull the data from the rrd files ... */
     for (i=0;i< (int)im->gdes_c;i++){
 	/* only GF_DEF elements fetch data */
 	if (im->gdes[i].gf != GF_DEF) 
@@ -705,9 +705,9 @@ data_fetch(image_desc_t *im )
 	    if ((strcmp(im->gdes[i].rrd, im->gdes[ii].rrd) == 0)
 			&& (im->gdes[i].cf    == im->gdes[ii].cf)
 			&& (im->gdes[i].cf_reduce == im->gdes[ii].cf_reduce)
-			&& (im->gdes[i].start == im->gdes[ii].start)
-			&& (im->gdes[i].end   == im->gdes[ii].end)
-			&& (im->gdes[i].step  == im->gdes[ii].step)) {
+			&& (im->gdes[i].start_orig == im->gdes[ii].start_orig)
+			&& (im->gdes[i].end_orig   == im->gdes[ii].end_orig)
+			&& (im->gdes[i].step_orig  == im->gdes[ii].step_orig)) {
 		/* OK, the data is already there.
 		** Just copy the header portion
 		*/
@@ -2881,6 +2881,7 @@ rrd_graph_init(image_desc_t *im)
     im->xsize = 400;
     im->ysize = 100;
     im->step = 0;
+    im->step_orig = 0;
     im->ylegend[0] = '\0';
     im->title[0] = '\0';
     im->minval = DNAN;
diff --git a/src/rrd_graph.h b/src/rrd_graph.h
index 5a8af09..b92ce9c 100644
--- a/src/rrd_graph.h
+++ b/src/rrd_graph.h
@@ -129,7 +129,9 @@ typedef  struct graph_desc_t {
 
     /* description of data fetched for the graph element */
     time_t         start,end; /* timestaps for first and last data element */
+    time_t         start_orig,end_orig; /* timestaps for first and last data element */
     unsigned long  step;      /* time between samples */
+    unsigned long  step_orig;      /* time between samples */
     unsigned long  ds_cnt; /* how many data sources are there in the fetch */
     long           data_first; /* first pointer to this data */
     char           **ds_namv; /* name of datasources  in the fetch. */
diff --git a/src/rrd_graph_helper.c b/src/rrd_graph_helper.c
index ec06d77..08f74d1 100644
--- a/src/rrd_graph_helper.c
+++ b/src/rrd_graph_helper.c
@@ -568,6 +568,7 @@ rrd_parse_def(char *line, unsigned int *eaten, graph_desc_t *gdp, image_desc_t *
 	} else if (!strcmp("step",command)) {
 	    i=0;
 	    sscanf(&line[*eaten],"%lu%n",&gdp->step,&i);
+	    gdp->step_orig = gdp->step;
 	    (*eaten)+=i;
 	    dprintf("- using step %lu\n",gdp->step);
 	} else if (!strcmp("start",command)) {
@@ -617,6 +618,8 @@ rrd_parse_def(char *line, unsigned int *eaten, graph_desc_t *gdp, image_desc_t *
 
     gdp->start = start_tmp;
     gdp->end = end_tmp;
+    gdp->start_orig = start_tmp;
+    gdp->end_orig = end_tmp;
 
     dprintf("- start time %lu\n",gdp->start);
     dprintf("- end   time %lu\n",gdp->end);
-- 
2.11.0