feature servlet-data added

scheme/httpd/surflets/packages.scm

@@ -72,6 +72,8 @@
   (export send/suspend			;send and suspend
 	  send/finish			;send and finish
 	  send				;just send (no finish, no suspend)
+	  set-servlet-data!
+	  get-servlet-data
 	  ))
 
 (define-interface servlet-handler/admin-interface
@@ -162,7 +164,10 @@
 	  
 	  make-address
 	  returned-via?
-	  make-callback))
+	  make-callback
+
+	  set-servlet-data!
+	  get-servlet-data))
  
 (define-structure servlets servlets-interface
   (open servlet-handler/servlet
@@ -172,6 +177,7 @@
 	parse-html-forms
 	sxml-to-html			; SXML->HTML
 	srfi-1				; FILTER
+	(subset srfi-13 (string-index)) 
 	sxml-tree-trans
 	url
 	httpd-request

scheme/httpd/surflets/surflet-handler.scm

@@ -8,13 +8,15 @@
 (define-record-type instance :instance
   (make-instance servlet-name memo 
 		 continuation-table continuation-table-lock
-		 continuation-counter)
+		 continuation-counter
+		 servlet-data)
   instance?
   (servlet-name instance-servlet-name)
   (memo instance-memo set-instance-memo!)
   (continuation-table instance-continuation-table)
   (continuation-table-lock instance-continuation-table-lock)
-  (continuation-counter instance-continuation-counter))
+  (continuation-counter instance-continuation-counter)
+  (servlet-data instance-servlet-data set-instance-servlet-data!))
 
 (define-record memo
   (message 'kill)			;kill, killed, adjust-timeout
@@ -350,7 +352,20 @@
 	      (table-set! continuation-table continuation-id #f))
 	  (release-lock continuation-table-lock)))))
 	
+(define (set-servlet-data! new-data)
+  (let ((instance (instance-lookup (session-instance-id))))
+    (if instance
+	(begin
+	  (set-instance-servlet-data! instance new-data)
+	  #t)
+	#f)))
 
+(define (get-servlet-data)
+  (let ((instance (instance-lookup (session-instance-id))))
+    (if instance
+	(instance-servlet-data instance)
+	(error "Instance no longer alive."))))
+	
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;; ID generation  
 ;; locking must be done by caller