gdbsupport, gdb: give names to observers

Give a name to each observer, this will help produce more meaningful
debug message.

gdbsupport/ChangeLog:

	* observable.h (class observable) <struct observer> <observer>:
	Add name parameter.
	<name>: New field.
	<attach>: Add name parameter, update all callers.

Change-Id: Ie0cc4664925215b8d2b09e026011b7803549fba0

1 files changed, 6 insertions, 3 deletions

diff --git a/gdb/bsd-uthread.c b/gdb/bsd-uthread.c
index 3cb8f64c89a..f8353f07041 100644
--- a/gdb/bsd-uthread.c
+++ b/gdb/bsd-uthread.c
@@ -550,7 +550,10 @@ _initialize_bsd_uthread ()
 {
   bsd_uthread_data = gdbarch_data_register_pre_init (bsd_uthread_init);
 
-  gdb::observers::inferior_created.attach (bsd_uthread_inferior_created);
-  gdb::observers::solib_loaded.attach (bsd_uthread_solib_loaded);
-  gdb::observers::solib_unloaded.attach (bsd_uthread_solib_unloaded);
+  gdb::observers::inferior_created.attach (bsd_uthread_inferior_created,
+					   "bsd-uthread");
+  gdb::observers::solib_loaded.attach (bsd_uthread_solib_loaded,
+				       "bsd-uthread");
+  gdb::observers::solib_unloaded.attach (bsd_uthread_solib_unloaded,
+					 "bsd-uthread");
 }