Implement MI notification for new threads.

        * doc/observer.texi (new_thread): Document.
        * observer.sh: Forward declare struct thread_info.
        * thread.c (add_thread): Notify observer.

        * interps.h (interp_init_ftype): New parameter
        top_level.
        (interp_set): Likewise.
        (top_level_interpreter_data): Declare.
        * interps.c (interp_set): New parameter top_level.
        Pass it to interpreter's init function.  Remember
        top level interpreter.
        (interpreter_exec_cmd): Adjust.
        (top_level_interpreter_data): New.
        * main.c (captured_main): Pass 1 for top_level
        parameter of interp_set.
	* cli/cli-interp.c (cli_interpreter_init): New
        parameter top_level.
        * tui/tui-interp.c (tui_init): New parameter top_level.

        * mi/mi-interp.c (mi_new_thread): New.
        (mi_interpreter_init): If top level, register
        observer for new threads.

        * Makefile.in (mi-interp.o, thread.o): Update dependencies.

1 files changed, 17 insertions, 1 deletions

diff --git a/gdb/mi/mi-interp.c b/gdb/mi/mi-interp.c
index eb924cd..96229a0 100644
--- a/gdb/mi/mi-interp.c
+++ b/gdb/mi/mi-interp.c
@@ -31,6 +31,8 @@
 #include "mi-cmds.h"
 #include "mi-out.h"
 #include "mi-console.h"
+#include "observer.h"
+#include "gdbthread.h"
 
 struct mi_interp
 {
@@ -64,8 +66,10 @@ static void mi1_command_loop (void);
 static void mi_insert_notify_hooks (void);
 static void mi_remove_notify_hooks (void);
 
+static void mi_new_thread (struct thread_info *t);
+
 static void *
-mi_interpreter_init (void)
+mi_interpreter_init (int top_level)
 {
   struct mi_interp *mi = XMALLOC (struct mi_interp);
 
@@ -83,6 +87,9 @@ mi_interpreter_init (void)
   mi->targ = mi_console_file_new (raw_stdout, "@", '"');
   mi->event_channel = mi_console_file_new (raw_stdout, "=", 0);
 
+  if (top_level)
+    observer_attach_new_thread (mi_new_thread);
+
   return mi;
 }
 
@@ -314,6 +321,15 @@ mi_command_loop (int mi_version)
   start_event_loop ();
 }
 
+static void
+mi_new_thread (struct thread_info *t)
+{
+  struct mi_interp *mi = top_level_interpreter_data ();
+
+  fprintf_unfiltered (mi->event_channel, "thread-created,id=%d", t->num);
+  gdb_flush (mi->event_channel);
+}
+
 extern initialize_file_ftype _initialize_mi_interp; /* -Wmissing-prototypes */
 
 void