Re: [PATCH] PR/12691 Add the inferior to Python exited event

[Kevin Pouget <kevin dot pouget at gmail dot com>]

On Wed, Aug 31, 2011 at 5:50 PM, Tom Tromey <tromey@redhat.com> wrote:
>>>>>> "Kevin" == Kevin Pouget <kevin.pouget@gmail.com> writes:
>
> Kevin> this patch was not explicitly accepted, could you please review this
> Kevin> version updated against the last trunk?
>
> Code bits are ok. ?Thanks.
>
> Tom

Hello,

There was a discrepancy between the version of the patch you approved
(http://sourceware.org/ml/gdb-patches/2011-08/msg00659/0001-PR-12691-Add-the-inferior-to-Python-exited-event)
and the one I originally submitted (I certainly missed a step during
the April->August update in the git tree):

 gdb/doc/gdb.texinfo                    |   10 ++++++----
 gdb/python/py-exitedevent.c            |    6 ++++++
 gdb/testsuite/gdb.python/py-events.c   |    1 +
 gdb/testsuite/gdb.python/py-events.exp |   11 ++++++++++-
 gdb/testsuite/gdb.python/py-events.py  |    1 +
 5 files changed, 24 insertions(+), 5 deletions(-)

and

> gdb/doc/gdb.texinfo                    |   12 ++++++++----
> gdb/python/py-event.h                  |    2 +-
> gdb/python/py-exitedevent.c            |   13 ++++++++++---
> gdb/python/py-inferior.c               |    2 +-

 gdb/testsuite/gdb.python/py-events.c   |    1 +
 gdb/testsuite/gdb.python/py-events.exp |   11 ++++++++++-
 gdb/testsuite/gdb.python/py-events.py  |    1 +

so I think it has to be re-approved.
There is no regression on x86_64 against the up-to-date GIT tree and
the generated PDF looks as expected.


Thanks,

Kevin

(I can't build the CVS tree because of missing ".deps/*.Po" files from
GDB/binutils, don't know where the problem comes from)


2011-09-20  Kevin Pouget  <kevin.pouget@st.com>

	PR python/12691: Add the inferior to Python exited event
	* python/py-exitedevent.c (create_exited_event_object): Add inferior
	to exited_event.
	* python/py-event.h (emit_exited_event): Likewise
	* python/-inferior.c (python_inferior_exit): Likewise

 2011-09-01  Kevin Pouget  <kevin.pouget@st.com>

	PR python/12691: Add the inferior to Python exited event
	* gdb.python/py-events.exp: Test the inferior attribute of exited
	event with a fork.
	* gdb.python/py-events.py: Print inferior number on exit.
	* gdb.python/py-events.c: Fork the inferior.

 2011-09-01  Kevin Pouget  <kevin.pouget@st.com>

	PR python/12691: Add the inferior to Python exited event
	* gdb.texinfo (Events In Python): Describe exited inferior attribute.

From e3a5558105530ba0c95ae0f5af1c98bc6f04e08a Mon Sep 17 00:00:00 2001
From: Kevin Pouget <kevin.pouget@st.com>
Date: Mon, 19 Sep 2011 11:31:02 +0200
Subject: [PATCH] PR/12691 Add the inferior to Python exited event

---
 gdb/doc/gdb.texinfo                    |   12 ++++++++----
 gdb/python/py-event.h                  |    2 +-
 gdb/python/py-exitedevent.c            |   13 ++++++++++---
 gdb/python/py-inferior.c               |    2 +-
 gdb/testsuite/gdb.python/py-events.c   |    1 +
 gdb/testsuite/gdb.python/py-events.exp |   11 ++++++++++-
 gdb/testsuite/gdb.python/py-events.py  |    1 +
 7 files changed, 32 insertions(+), 10 deletions(-)

diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index 051377d..e55efb1 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -22289,12 +22289,16 @@ inherited attribute refer to @code{gdb.ThreadEvent} above.
 
 @item events.exited
 Emits @code{events.ExitedEvent} which indicates that the inferior has exited.
-@code{events.ExitedEvent} has one optional attribute.  This attribute
-will exist only in the case that the inferior exited with some
-status.
+@code{events.ExitedEvent} has two attributes:
 @table @code
 @defvar ExitedEvent.exit_code
-An integer representing the exit code which the inferior has returned.
+An integer representing the exit code, if available, which the inferior 
+has returned.  (The exit code could be unavailable if, for example,
+@value{GDBN} detaches from the inferior.) If the exit code is unavailable,
+the attribute does not exist.
+@end defvar
+@defvar ExitedEvent inferior
+A reference to the inferior which triggered the @code{exited} event.
 @end defvar
 @end table
 
diff --git a/gdb/python/py-event.h b/gdb/python/py-event.h
index f4b3ee2..49d7b6a 100644
--- a/gdb/python/py-event.h
+++ b/gdb/python/py-event.h
@@ -104,7 +104,7 @@ typedef struct
 } event_object;
 
 extern int emit_continue_event (ptid_t ptid);
-extern int emit_exited_event (const LONGEST *exit_code);
+extern int emit_exited_event (const LONGEST *exit_code, struct inferior *inf);
 
 extern int evpy_emit_event (PyObject *event,
                             eventregistry_object *registry);
diff --git a/gdb/python/py-exitedevent.c b/gdb/python/py-exitedevent.c
index 08150e5..85ea2e2 100644
--- a/gdb/python/py-exitedevent.c
+++ b/gdb/python/py-exitedevent.c
@@ -22,9 +22,10 @@
 static PyTypeObject exited_event_object_type;
 
 static PyObject *
-create_exited_event_object (const LONGEST *exit_code)
+create_exited_event_object (const LONGEST *exit_code, struct inferior *inf)
 {
   PyObject *exited_event;
+  PyObject *inf_obj;
 
   exited_event = create_event_object (&exited_event_object_type);
 
@@ -37,6 +38,12 @@ create_exited_event_object (const LONGEST *exit_code)
 			     PyLong_FromLongLong (*exit_code)) < 0)
     goto fail;
 
+  inf_obj = inferior_to_inferior_object (inf);
+  if (!inf_obj || evpy_add_attribute (exited_event,
+                                      "inferior",
+                                      inf_obj) < 0)
+    goto fail;
+
   return exited_event;
 
   fail:
@@ -48,14 +55,14 @@ create_exited_event_object (const LONGEST *exit_code)
    will create a new Python exited event object.  */
 
 int
-emit_exited_event (const LONGEST *exit_code)
+emit_exited_event (const LONGEST *exit_code, struct inferior *inf)
 {
   PyObject *event;
 
   if (evregpy_no_listeners_p (gdb_py_events.exited))
     return 0;
 
-  event = create_exited_event_object (exit_code);
+  event = create_exited_event_object (exit_code, inf);
 
   if (event)
     return evpy_emit_event (event, gdb_py_events.exited);
diff --git a/gdb/python/py-inferior.c b/gdb/python/py-inferior.c
index 8ed3ea5..275caea 100644
--- a/gdb/python/py-inferior.c
+++ b/gdb/python/py-inferior.c
@@ -119,7 +119,7 @@ python_inferior_exit (struct inferior *inf)
   if (inf->has_exit_code)
     exit_code = &inf->exit_code;
 
-  if (emit_exited_event (exit_code) < 0)
+  if (emit_exited_event (exit_code, inf) < 0)
     gdbpy_print_stack ();
 
   do_cleanups (cleanup);
diff --git a/gdb/testsuite/gdb.python/py-events.c b/gdb/testsuite/gdb.python/py-events.c
index ceb697e..665ca51 100644
--- a/gdb/testsuite/gdb.python/py-events.c
+++ b/gdb/testsuite/gdb.python/py-events.c
@@ -17,6 +17,7 @@
 */
 
 int second(){
+  fork() ;
   return 12;
 }
 
diff --git a/gdb/testsuite/gdb.python/py-events.exp b/gdb/testsuite/gdb.python/py-events.exp
index 2d2139d..18419fa 100644
--- a/gdb/testsuite/gdb.python/py-events.exp
+++ b/gdb/testsuite/gdb.python/py-events.exp
@@ -37,6 +37,8 @@ if ![runto_main ] then {
     return -1
 }
 
+gdb_test_no_output "set detach-on-fork off" ""
+
 gdb_test "Test_Events" "Event testers registered."
 
 gdb_breakpoint "first"
@@ -54,4 +56,11 @@ all threads stopped"
 #test exited event.
 gdb_test "continue" ".*event type: continue.*
 .*event type: exit.*
-.*exit code: 12.*"
+.*exit code: 12.*
+.*exit inf: 1.*" "Inferior 1 terminated."
+
+gdb_test "inferior 2" ".*Switching to inferior 2.*"
+gdb_test "continue" ".*event type: continue.*
+.*event type: exit.*
+.*exit code: 12.*
+.*exit inf: 2.*" "Inferior 2 terminated."
diff --git a/gdb/testsuite/gdb.python/py-events.py b/gdb/testsuite/gdb.python/py-events.py
index 10aea4f..6bdd935 100644
--- a/gdb/testsuite/gdb.python/py-events.py
+++ b/gdb/testsuite/gdb.python/py-events.py
@@ -43,6 +43,7 @@ def exit_handler (event):
     if (isinstance (event, gdb.ExitedEvent)):
         print "event type: exit"
     print "exit code: %d" % (event.exit_code)
+    print "exit inf: %d" % (event.inferior.num)
 
 def continue_handler (event):
     if (isinstance (event, gdb.ContinueEvent)):
-- 
1.7.6