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[RFA 06/13] Use gdbpy_ref in py-inferior.c


This changes py-inferior.c to use gdbpy_ref in more places.

2016-11-20  Tom Tromey  <tom@tromey.com>

	* python/py-inferior.c (find_thread_object, build_inferior_list):
	Use gdbpy_ref.
---
 gdb/ChangeLog            |  5 +++++
 gdb/python/py-inferior.c | 23 ++++++-----------------
 2 files changed, 11 insertions(+), 17 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 545dbde..28e427e 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,10 @@
 2016-11-20  Tom Tromey  <tom@tromey.com>
 
+	* python/py-inferior.c (find_thread_object, build_inferior_list):
+	Use gdbpy_ref.
+
+2016-11-20  Tom Tromey  <tom@tromey.com>
+
 	* python/py-framefilter.c (py_print_frame): Use gdbpy_ref.
 
 2016-11-20  Tom Tromey  <tom@tromey.com>
diff --git a/gdb/python/py-inferior.c b/gdb/python/py-inferior.c
index a9993a8..4ba20ce 100644
--- a/gdb/python/py-inferior.c
+++ b/gdb/python/py-inferior.c
@@ -251,19 +251,17 @@ find_thread_object (ptid_t ptid)
 {
   int pid;
   struct threadlist_entry *thread;
-  PyObject *inf_obj;
   thread_object *found = NULL;
 
   pid = ptid_get_pid (ptid);
   if (pid == 0)
     return NULL;
 
-  inf_obj = find_inferior_object (pid);
-
-  if (! inf_obj)
+  gdbpy_ref inf_obj (find_inferior_object (pid));
+  if (inf_obj == NULL)
     return NULL;
 
-  for (thread = ((inferior_object *)inf_obj)->threads; thread;
+  for (thread = ((inferior_object *)(inf_obj.get ()))->threads; thread;
        thread = thread->next)
     if (ptid_equal (thread->thread_obj->thread->ptid, ptid))
       {
@@ -271,8 +269,6 @@ find_thread_object (ptid_t ptid)
 	break;
       }
 
-  Py_DECREF (inf_obj);
-
   if (found)
     return found;
 
@@ -416,19 +412,12 @@ static int
 build_inferior_list (struct inferior *inf, void *arg)
 {
   PyObject *list = (PyObject *) arg;
-  PyObject *inferior = inferior_to_inferior_object (inf);
-  int success = 0;
+  gdbpy_ref inferior (inferior_to_inferior_object (inf));
 
-  if (! inferior)
+  if (inferior  == NULL)
     return 0;
 
-  success = PyList_Append (list, inferior);
-  Py_DECREF (inferior);
-
-  if (success)
-    return 1;
-
-  return 0;
+  return PyList_Append (list, inferior.get ()) ? 1 : 0;
 }
 
 /* Implementation of gdb.inferiors () -> (gdb.Inferior, ...).
-- 
2.7.4


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