X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fhttp_getter%2Fhttp_getter_map.ml;h=26daa21d5f2695f5b1ddcf6c22ea933b985cb6b9;hb=12e7928b2ce2113d5ac43d453026d0443f58c5e4;hp=9ee87618104003943e0f49484c7e98be736a1a0a;hpb=86e80bc65186bf4c2824dc94f5f4dd5966843f14;p=helm.git

diff --git a/helm/http_getter/http_getter_map.ml b/helm/http_getter/http_getter_map.ml
index 9ee876181..26daa21d5 100644
--- a/helm/http_getter/http_getter_map.ml
+++ b/helm/http_getter/http_getter_map.ml
@@ -24,17 +24,23 @@
  *  http://cs.unibo.it/helm/.
  *)
 
+let debug = true;;
+let debug_print s = if debug then prerr_endline s;;
+
 exception Key_already_in of string;;
 exception Key_not_found of string;;
 
 class map dbname =
   let perm = 420 in (* permission 644 in decimal notation *)
-  let db = Dbm.opendbm dbname [ Dbm.Dbm_rdwr; Dbm.Dbm_create ] perm in
+  let open_dbm () = Dbm.opendbm dbname [ Dbm.Dbm_rdwr; Dbm.Dbm_create ] perm in
+  
   object (self)
 
     inherit ThreadSafe.threadSafe
 
-    initializer Gc.finalise Dbm.close db  (* close db on GC *)
+    val mutable db = open_dbm ()
+
+    (*initializer Gc.finalise Dbm.close db  (* close db on GC *)*)
 
     method add key value =
       self#doWriter (lazy (
@@ -60,9 +66,26 @@ class map dbname =
         Dbm.iter f db
       ))
 
+    method sync =
+      self#doWriter (lazy (
+        Dbm.close db;
+        db <- open_dbm ()
+      ))
+
     method clear =
       self#doWriter (lazy (
-        Dbm.iter (fun k _ -> Dbm.remove db k) db
+        Dbm.close db;
+        List.iter
+          (fun ext ->
+            let file = dbname ^ ext in
+            if Sys.file_exists file then Sys.remove file)
+          [".dir"; ".pag"; ".db"];
+        db <- open_dbm ()
+      ))
+
+    method close =
+      self#doWriter (lazy (
+        Dbm.close db
       ))
 
   end