[patch 3/5] Print a message on gdb disconnected.

[Yao Qi <yao@codesourcery.com>]

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This patch is to print a warning when gdb disconnects from remote stub,
while there are still pending tracepoints, because pending tracepoints
can't be resolved without gdb.

-- 
Yao (齐尧)

[-- Attachment #2: 0003-pending-tracepoint-on-disconnect.patch --]
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        gdb/
	* tracepoint.c (process_tracepoint_on_disconnect): New.
	(disconnect_tracing): Call process_tracepoint_on_disconnect.
---
 gdb/tracepoint.c |   28 ++++++++++++++++++++++++++++
 1 files changed, 28 insertions(+), 0 deletions(-)

diff --git a/gdb/tracepoint.c b/gdb/tracepoint.c
index e155515..c0b5231 100644
--- a/gdb/tracepoint.c
+++ b/gdb/tracepoint.c
@@ -1642,6 +1642,32 @@ add_aexpr (struct collection_list *collect, struct agent_expr *aexpr)
   collect->next_aexpr_elt++;
 }
 
+static void
+process_tracepoint_on_disconnect (void)
+{
+  VEC(breakpoint_p) *tp_vec = NULL;
+  int ix;
+  struct breakpoint *b;
+  int has_pending_p = 0;
+
+  /* Check whether we still have pending tracepoint.  If we have, warn the
+     user that pending tracepoint will no longer work.  */
+  tp_vec = all_tracepoints ();
+  for (ix = 0; VEC_iterate (breakpoint_p, tp_vec, ix, b); ix++)
+    {
+      if (b->loc == NULL || b->loc->shlib_disabled)
+	{
+	  has_pending_p = 1;
+	  break;
+	}
+    }
+  VEC_free (breakpoint_p, tp_vec);
+
+  if (has_pending_p)
+    warning (_("Pending tracepoint will not be resolved while"
+	       " GBD is disconnected\n"));
+}
+
 
 void
 start_tracing (void)
@@ -2020,6 +2046,8 @@ disconnect_tracing (int from_tty)
      disconnected-tracing.  */
   if (current_trace_status ()->running && from_tty)
     {
+      process_tracepoint_on_disconnect ();
+
       if (current_trace_status ()->disconnected_tracing)
 	{
 	  if (!query (_("Trace is running and will "
-- 
1.7.0.4