src/Pure/Tools/debugger.ML

 
 (* global state *)
 
 datatype state =
   State of {
-    threads: Thread.thread Symtab.table,  (*thread identification ~> thread*)
-    input: string list Queue.T Symtab.table  (*thread identification ~> input queue*)
+    threads: Thread.thread Symtab.table,  (*thread name ~> thread*)
+    input: string list Queue.T Symtab.table  (*thread name ~> input queue*)
   };
 
 fun make_state (threads, input) = State {threads = threads, input = input};
 val init_state = make_state (Symtab.empty, Symtab.empty);
 fun map_state f (State {threads, input}) = make_state (f (threads, input));
 
 val global_state = Synchronized.var "Debugger.state" init_state;
 
-fun cancel id =
+fun cancel name =
   Synchronized.change global_state (tap (fn State {threads, ...} =>
-    (case Symtab.lookup threads id of
+    (case Symtab.lookup threads name of
       NONE => ()
     | SOME thread => Simple_Thread.interrupt_unsynchronized thread)));
 
-fun input id msg =
+fun input name msg =
   Synchronized.change global_state (map_state (fn (threads, input) =>
-    let val input' = Symtab.map_default (id, Queue.empty) (Queue.enqueue msg) input;
+    let val input' = Symtab.map_default (name, Queue.empty) (Queue.enqueue msg) input;
     in (threads, input') end));
 
-fun get_input id =
+fun get_input name =
   Synchronized.guarded_access global_state (fn State {threads, input} =>
-    (case Symtab.lookup input id of
+    (case Symtab.lookup input name of
       NONE => NONE
     | SOME queue =>
         let
           val (msg, queue') = Queue.dequeue queue;
           val input' =
-            if Queue.is_empty queue' then Symtab.delete_safe id input
-            else Symtab.update (id, queue') input;
+            if Queue.is_empty queue' then Symtab.delete_safe name input
+            else Symtab.update (name, queue') input;
         in SOME (msg, make_state (threads, input')) end));
 
 
 (* thread data *)
 

 val _ = Session.protocol_handler "isabelle.Debugger$Handler";
 
 
 (* main entry point *)
 
-fun debug_loop id =
-  (case get_input id of
+fun debug_loop name =
+  (case get_input name of
     ["continue"] => ()
   | bad =>
      (Output.system_message
         ("Debugger: bad input " ^ ML_Syntax.print_list ML_Syntax.print_string bad);
-      debug_loop id));
+      debug_loop name));
 
 fun debugger cond =
   if debugging () orelse not (cond ()) orelse
     not (Options.default_bool @{system_option ML_debugger_active})
   then ()
   else
     with_debugging (fn () =>
-      (case Simple_Thread.identification () of
+      (case Simple_Thread.name () of
         NONE => ()
-      | SOME id => debug_loop id));
+      | SOME name => debug_loop name));
 
 fun init () =
   ML_Debugger.on_breakpoint
     (SOME (fn (_, b) =>
       debugger (fn () => ! b orelse Options.default_bool @{system_option ML_debugger_stepping})));

   Isabelle_Process.protocol_command "Debugger.init"
     (fn [] => init ());
 
 val _ =
   Isabelle_Process.protocol_command "Debugger.cancel"
-    (fn [id] => cancel id);
+    (fn [name] => cancel name);
 
 val _ =
   Isabelle_Process.protocol_command "Debugger.input"
-    (fn id :: msg => input id msg);
+    (fn name :: msg => input name msg);
 
 end;