gdb/

* inferior.c (print_inferior): Align columns left.  Remove header
	for the the "current" column.  Rename column "Id" to "Num".
	Rename column "PID" to "Description".  Print if there's no selected
	inferior.

	gdb/doc/
	* gdb.texinfo (Debugging Multiple Inferiors): Add "info inferiors"
	small example, and describe its columns.  Replace "inferior-id" by
	"infno" throughout.

gdb/ChangeLog

@@ -1,3 +1,10 @@
+2009-08-25  Pedro Alves  <pedro@codesourcery.com>
+
+	* inferior.c (print_inferior): Align columns left.  Remove header
+	for the the "current" column.  Rename column "Id" to "Num".
+	Rename column "PID" to "Description".  Print if there's no selected
+	inferior.
+
 2009-08-25  Jan Kratochvil  <jan.kratochvil@redhat.com>
 
 	Fix ia64 start crash when GDB built with -lmcheck.

gdb/doc/ChangeLog

@@ -1,3 +1,9 @@
+2009-08-25  Pedro Alves  <pedro@codesourcery.com>
+
+	* gdb.texinfo (Debugging Multiple Inferiors): Add "info inferiors"
+	small example, and describe its columns.  Replace "inferior-id" by
+	"infno" throughout.
+
 2009-08-22  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
 
 	* gdbint.texinfo (Releasing GDB): Point to

gdb/doc/gdb.texinfo

@@ -2375,17 +2375,40 @@ To find out what inferiors exist at any moment, use @code{info inferiors}:
 @kindex info inferiors
 @item info inferiors
 Print a list of all inferiors currently being managed by @value{GDBN}.
+
+@value{GDBN} displays for each inferior (in this order):
+
+@enumerate
+@item
+the inferior number assigned by @value{GDBN}
+
+@item
+the target system's inferior identifier
+@end enumerate
+
+@noindent
+An asterisk @samp{*} preceding the @value{GDBN} inferior number
+indicates the current inferior.
+
+For example,
 @end table
+@c end table here to get a little more width for example
+
+@smallexample
+(@value{GDBP}) info inferiors
+  Num  Description
+* 1    process 2307
+  2    process 3401
+@end smallexample
 
 To switch focus between inferiors, use the @code{inferior} command:
 
 @table @code
-@kindex inferior @var{inferior-id}
+@kindex inferior @var{infno}
-@item inferior @var{inferior-id}
+@item inferior @var{infno}
-Make inferior number @var{inferior-id} the current inferior.  The
+Make inferior number @var{infno} the current inferior.  The argument
-argument @var{inferior-id} is the internal inferior number assigned by
+@var{infno} is the inferior number assigned by @value{GDBN}, as shown
-@value{GDBN}, as shown in the first field of the @samp{info inferiors}
+in the first field of the @samp{info inferiors} display.
-display.
 @end table
 
 To quit debugging one of the inferiors, you can either detach from it
@@ -2393,15 +2416,15 @@ by using the @w{@code{detach inferior}} command (allowing it to run
 independently), or kill it using the @w{@code{kill inferior}} command:
 
 @table @code
-@kindex detach inferior @var{inferior-id}
+@kindex detach inferior @var{infno}
-@item detach inferior @var{inferior-id}
+@item detach inferior @var{infno}
 Detach from the inferior identified by @value{GDBN} inferior number
-@var{inferior-id}, and remove it from the inferior list.
+@var{infno}, and remove it from the inferior list.
 
-@kindex kill inferior @var{inferior-id}
+@kindex kill inferior @var{infno}
-@item kill inferior @var{inferior-id}
+@item kill inferior @var{infno}
 Kill the inferior identified by @value{GDBN} inferior number
-@var{inferior-id}, and remove it from the inferior list.
+@var{infno}, and remove it from the inferior list.
 @end table
 
 To be notified when inferiors are started or exit under @value{GDBN}'s

gdb/inferior.c

@@ -324,9 +324,9 @@ print_inferior (struct ui_out *uiout, int requested_inferior)
 
   old_chain = make_cleanup_ui_out_table_begin_end (uiout, 3, inf_count,
 						   "inferiors");
-  ui_out_table_header (uiout, 3, ui_right, "current", "Cur");
+  ui_out_table_header (uiout, 1, ui_left, "current", "");
-  ui_out_table_header (uiout, 4, ui_right, "id", "Id");
+  ui_out_table_header (uiout, 4, ui_left, "number", "Num");
-  ui_out_table_header (uiout, 7, ui_right, "target-id", "PID");
+  ui_out_table_header (uiout, 17, ui_left, "target-id", "Description");
   ui_out_table_body (uiout);
 
   for (inf = inferior_list; inf; inf = inf->next)
@@ -343,13 +343,19 @@ print_inferior (struct ui_out *uiout, int requested_inferior)
       else
 	ui_out_field_skip (uiout, "current");
 
-      ui_out_field_int (uiout, "id", inf->num);
+      ui_out_field_int (uiout, "number", inf->num);
-      ui_out_field_int (uiout, "target-id", inf->pid);
+      ui_out_field_string (uiout, "target-id",
+			   target_pid_to_str (pid_to_ptid (inf->pid)));
 
       ui_out_text (uiout, "\n");
       do_cleanups (chain2);
     }
 
+  if (inferior_list
+      && ptid_equal (inferior_ptid, null_ptid))
+    ui_out_message (uiout, 0, "\n\
+No selected inferior/thread.  See `help thread' or `help inferior'.\n");
+
   do_cleanups (old_chain);
 }