--- rat/lonuserstate.pm	2005/03/15 17:25:51	1.86
+++ rat/lonuserstate.pm	2005/03/18 21:55:49	1.88
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Construct and maintain state and binary representation of course for user
 #
-# $Id: lonuserstate.pm,v 1.86 2005/03/15 17:25:51 albertel Exp $
+# $Id: lonuserstate.pm,v 1.88 2005/03/18 21:55:49 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -32,7 +32,6 @@ package Apache::lonuserstate;
 # ------------------------------------------------- modules used by this module
 use strict;
 use Apache::Constants qw(:common :http);
-use Apache::File;
 use HTML::TokeParser;
 use Apache::lonnet();
 use Apache::loncommon();
@@ -540,8 +539,8 @@ sub readmap {
 	return 'No course data available.';
     }
     @cond=('true:normal');
-    unlink($fn.'.db');
-    unlink($fn.'_symb.db');
+    #unlink($fn.'.db');
+    #unlink($fn.'_symb.db');
     unlink($fn.'.state');
     unlink($fn.'parms.db');
     undef %randompick;
@@ -589,7 +588,7 @@ sub readmap {
 # ---------------------------------------------------- Store away initial state
 	{
 	    my $cfh;
-	    if ($cfh=Apache::File->new(">$fn.state")) {
+	    if (open($cfh,">$fn.state")) {
 		print $cfh join("\n",@cond);
 	    } else {
 		&Apache::lonnet::logthis("<font color=blue>WARNING: ".
@@ -597,8 +596,33 @@ sub readmap {
 	    }
 	}  
     } else {
+	# if we are here it is likely because we are already trying to 
+	# initialize the course in another child, busy wait trying to 
+	# tie the hashes for the next 90 seconds, if we succeed forward 
+	# them on to navmaps, if we fail, throw up the Could not init 
+	# course screen
+	untie(%hash);
+	untie(%parmhash);
 	&Apache::lonnet::logthis("<font color=blue>WARNING: ".
 				 "Could not tie coursemap $fn for $uri.</font>"); 
+	my $i=0;
+	while($i<90) {
+	    $i++;
+	    sleep(1);
+	    if ((tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640))) {
+		if (tie(%parmhash,'GDBM_File',$fn.'_parms.db',&GDBM_READER(),0640)) {
+		    $retfurl='/adm/navmaps';
+		    &Apache::lonnet::appenv("request.course.id"  => $short,
+					    "request.course.fn"  => $fn,
+					    "request.course.uri" => $uri);
+		    untie(%hash);
+		    untie(%parmhash);
+		    last;
+		}
+	    }
+	    untie(%hash);
+	    untie(%parmhash);
+	}
     }
     &Apache::lonmsg::author_res_msg($ENV{'request.course.uri'},$errtext);
 # ------------------------------------------------- Check for critical messages