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Simplify uses of thread_to_thread_object

Browse Source 
An review by Simon of an earlier showed a few spots related to
thread_to_thread_object that could be simplified.  This also detected
a latent bug, where thread_to_thread_object was inconsistent about
setting the Python exception before a NULL return.

Tested on x86-64 Fedora 28.

gdb/ChangeLog
2018-09-16  Tom Tromey  <tom@tromey.com>

	* python/py-threadevent.c (py_get_event_thread): Simplify.
	* python/py-inferior.c (infpy_thread_from_thread_handle):
	Return immediately after calling thread_to_thread_object.  Use
	Py_RETURN_NONE.
	(thread_to_thread_object): Set the exception on a NULL return.
This commit is contained in:
Tom Tromey 2018-09-16 08:02:22 -06:00
parent 8ff03f0bfb
commit 4a137fec2e
3 changed files with 14 additions and 17 deletions
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8
gdb/ChangeLog
View File

@ -1,3 +1,11 @@
2018-09-16 Tom Tromey <tom@tromey.com>
* python/py-threadevent.c (py_get_event_thread): Simplify.
* python/py-inferior.c (infpy_thread_from_thread_handle):
Return immediately after calling thread_to_thread_object. Use
Py_RETURN_NONE.
(thread_to_thread_object): Set the exception on a NULL return.
2018-09-16 Simon Marchi <simon.marchi@polymtl.ca>
* Makefile.in (LIBGDB_OBS): Sort COMMON_OBS.

10
gdb/python/py-inferior.c
View File

@ -319,6 +319,8 @@ thread_to_thread_object (thread_info *thr)
if (thread->thread_obj->thread == thr)
return gdbpy_ref<>::new_reference ((PyObject *) thread->thread_obj);
PyErr_SetString (PyExc_SystemError,
_("could not find gdb thread object"));
return NULL;
}
@ -849,7 +851,6 @@ infpy_thread_from_thread_handle (PyObject *self, PyObject *args, PyObject *kw)
return NULL;
}
gdbpy_ref<> result;
TRY
{
struct thread_info *thread_info;
@ -857,7 +858,7 @@ infpy_thread_from_thread_handle (PyObject *self, PyObject *args, PyObject *kw)
thread_info = find_thread_by_handle (val, inf_obj->inferior);
if (thread_info != NULL)
result = thread_to_thread_object (thread_info);
return thread_to_thread_object (thread_info).release ();
}
CATCH (except, RETURN_MASK_ALL)
{
@ -865,10 +866,7 @@ infpy_thread_from_thread_handle (PyObject *self, PyObject *args, PyObject *kw)
}
END_CATCH
if (result == NULL)
result = gdbpy_ref<>::new_reference (Py_None);
return result.release ();
Py_RETURN_NONE;
}
/* Implement repr() for gdb.Inferior. */

13
gdb/python/py-threadevent.c
View File

@ -25,24 +25,15 @@
gdbpy_ref<>
py_get_event_thread (ptid_t ptid)
{
gdbpy_ref<> pythread;
if (non_stop)
{
thread_info *thread = find_thread_ptid (ptid);
if (thread != nullptr)
pythread = thread_to_thread_object (thread);
}
else
pythread = gdbpy_ref<>::new_reference (Py_None);
if (pythread == nullptr)
{
return thread_to_thread_object (thread);
PyErr_SetString (PyExc_RuntimeError, "Could not find event thread");
return NULL;
}
return pythread;
return gdbpy_ref<>::new_reference (Py_None);
}
gdbpy_ref<>