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authorAndrew Burgess <aburgess@redhat.com>2022-05-24 11:54:40 +0100
committerAndrew Burgess <aburgess@redhat.com>2022-06-15 09:44:54 +0100
commit8a0b60471a75ce81b8ea067f6e87457b3ed0c7a3 (patch)
tree348a51966c354f6894e7c34f2dc9f6329ff956b1 /gdb/python
parent5fb28d2607a8325559b44a5dc0c8760236c81218 (diff)
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gdb/python: convert gdbpy_err_fetch to use gdbpy_ref
Convert the gdbpy_err_fetch class to make use of gdbpy_ref, this removes the need for manual reference count management, and allows the destructor to be removed. There should be no functional change after this commit. I think this cleanup is worth doing on its own, however, in a later commit I will want to copy instances of gdbpy_err_fetch, and switching to using gdbpy_ref means that I can rely on the default copy constructor, without having to add one that handles the reference counts, so this is good preparation for that upcoming change.
Diffstat (limited to 'gdb/python')
-rw-r--r--gdb/python/py-utils.c8
-rw-r--r--gdb/python/python-internal.h23
2 files changed, 14 insertions, 17 deletions
diff --git a/gdb/python/py-utils.c b/gdb/python/py-utils.c
index 1bd7b47..58c18c6 100644
--- a/gdb/python/py-utils.c
+++ b/gdb/python/py-utils.c
@@ -194,10 +194,10 @@ gdbpy_err_fetch::to_string () const
Using str (aka PyObject_Str) will fetch the error message from
gdb.GdbError ("message"). */
- if (m_error_value && m_error_value != Py_None)
- return gdbpy_obj_to_string (m_error_value);
+ if (m_error_value.get () != nullptr && m_error_value.get () != Py_None)
+ return gdbpy_obj_to_string (m_error_value.get ());
else
- return gdbpy_obj_to_string (m_error_type);
+ return gdbpy_obj_to_string (m_error_type.get ());
}
/* See python-internal.h. */
@@ -205,7 +205,7 @@ gdbpy_err_fetch::to_string () const
gdb::unique_xmalloc_ptr<char>
gdbpy_err_fetch::type_to_string () const
{
- return gdbpy_obj_to_string (m_error_type);
+ return gdbpy_obj_to_string (m_error_type.get ());
}
/* Convert a GDB exception to the appropriate Python exception.
diff --git a/gdb/python/python-internal.h b/gdb/python/python-internal.h
index 217bc15..da2e791 100644
--- a/gdb/python/python-internal.h
+++ b/gdb/python/python-internal.h
@@ -549,14 +549,12 @@ public:
gdbpy_err_fetch ()
{
- PyErr_Fetch (&m_error_type, &m_error_value, &m_error_traceback);
- }
+ PyObject *error_type, *error_value, *error_traceback;
- ~gdbpy_err_fetch ()
- {
- Py_XDECREF (m_error_type);
- Py_XDECREF (m_error_value);
- Py_XDECREF (m_error_traceback);
+ PyErr_Fetch (&error_type, &error_value, &error_traceback);
+ m_error_type.reset (error_type);
+ m_error_value.reset (error_value);
+ m_error_traceback.reset (error_traceback);
}
/* Call PyErr_Restore using the values stashed in this object.
@@ -565,10 +563,9 @@ public:
void restore ()
{
- PyErr_Restore (m_error_type, m_error_value, m_error_traceback);
- m_error_type = nullptr;
- m_error_value = nullptr;
- m_error_traceback = nullptr;
+ PyErr_Restore (m_error_type.release (),
+ m_error_value.release (),
+ m_error_traceback.release ());
}
/* Return the string representation of the exception represented by
@@ -587,12 +584,12 @@ public:
bool type_matches (PyObject *type) const
{
- return PyErr_GivenExceptionMatches (m_error_type, type);
+ return PyErr_GivenExceptionMatches (m_error_type.get (), type);
}
private:
- PyObject *m_error_type, *m_error_value, *m_error_traceback;
+ gdbpy_ref<> m_error_type, m_error_value, m_error_traceback;
};
/* Called before entering the Python interpreter to install the