43cc16d8d72f686e8652637128a13c4fd4851c56
braney
  Thu Nov 7 14:58:11 2019 -0800
add logging of current position in error_log

diff --git src/hg/hgTracks/hgTracks.c src/hg/hgTracks/hgTracks.c
index 88ea935..a7f970b 100644
--- src/hg/hgTracks/hgTracks.c
+++ src/hg/hgTracks/hgTracks.c
@@ -2075,53 +2075,54 @@
 
 struct track *track;
 for (track = trackList; track != NULL; track = track->next)
     {
     int vis = track->limitedVisSet ? track->limitedVis : track->visibility;
     if (vis)
 	{
 	logTrackList(dy, track->subtracks);
 	if (dy->stringSize)
 	    dyStringAppendC(dy, ',');
 	dyStringPrintf(dy,"%s:%d", track->track, vis);
 	}
     }
 }
 
-static void logTrackVisibilities (char *hgsid, struct track *trackList)
+static void logTrackVisibilities (char *hgsid, struct track *trackList, char *position)
 /* log visibile tracks and hgsid */
 {
 struct dyString *dy = newDyString(1024);
 
 // build up dyString
 logTrackList(dy, trackList);
 
 // put out ~1024 bye blocks to error_log because otherwise
 // Apache will chop up the lines
 char *begin = dy->string;
 char *ptr = begin;
 int count = 0;
 for(ptr=begin; ((ptr = strchr(ptr, ',')) != NULL); ptr++)
     {
     if (ptr - begin > 800)
 	{
 	*ptr = 0;
 	fprintf(stderr, "trackLog %d %s %s %s\n", count++, database, hgsid, begin);
 	begin = ptr+1;
 	}
     }
 fprintf(stderr, "trackLog %d %s %s %s\n", count++, database, hgsid, begin);
+fprintf(stderr, "trackLog position %s %s %s\n",  database, hgsid, position);
 
 dyStringFree(&dy);
 }
 
 static void rAddToTrackHash(struct hash *trackHash, struct track *trackList)
 /* Add list and any children of list to hash. */
 {
 struct track *track;
 for (track = trackList; track != NULL; track = track->next)
     {
     hashAddUnique(trackHash, track->track, track);
     rAddToTrackHash(trackHash, track->subtracks);
     }
 }
 
@@ -7827,31 +7828,31 @@
     struct window *w;
     for (w = windows; w; w=w->next)
         {
         if (hTrackOnChrom(track->tdb, w->chromName))
             hideIt = FALSE;
         }
     if (hideIt)
         {
         track->limitedVis = tvHide;
         track->limitedVisSet = TRUE;
         }
     }
 
 
 if (sameString(cfgOptionDefault("trackLog", "off"), "on"))
-    logTrackVisibilities(cartSessionId(cart), trackList);
+    logTrackVisibilities(cartSessionId(cart), trackList, position);
 
 
 /////////////////
 
 // NEED TO LOAD ALL WINDOWS NOW
 //
 //   Need to load one window at a time!
 //
 //   The use of the global values for a window
 //   means that differerent threads cannot use different global window values.
 //   Threads must run on just one window value at a time.
 //
 //   Begin by making a copy of the track structure for visible tracks
 //   for all windows.