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| author | Thomas Haller <thaller@redhat.com> | 2021-08-26 10:21:57 +0200 |
|---|---|---|
| committer | Thomas Haller <thaller@redhat.com> | 2021-08-31 16:34:02 +0200 |
| commit | cc38b36f8ce2011c758c53d6e8f3020dc8949313 (patch) | |
| tree | 41e27177aa658069ac752798782a3084246f515d /src | |
| parent | 92ba45727b69ec3a83c6f4a7568443eee94bef82 (diff) | |
| download | NetworkManager-cc38b36f8ce2011c758c53d6e8f3020dc8949313.tar.gz | |
platform: add nm_clear_nmp_object_up_cast(), nmp_object_ref_set_up_cast() helpers
It can be convenient to track a NMPObject in form of their down-cast
pointers. When doing that, it's useful to have clear/ref-set helpers
that operate on such pointers and up-cast first.
Diffstat (limited to 'src')
| -rw-r--r-- | src/libnm-platform/nmp-object.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/src/libnm-platform/nmp-object.h b/src/libnm-platform/nmp-object.h index 83714c9835..bf789fb077 100644 --- a/src/libnm-platform/nmp-object.h +++ b/src/libnm-platform/nmp-object.h @@ -625,6 +625,20 @@ nmp_object_unref(const NMPObject *obj) _changed; \ }) +#define nm_clear_nmp_object_up_cast(ptr) \ + ({ \ + typeof(ptr) _ptr = (ptr); \ + typeof(*_ptr) _pptr; \ + gboolean _changed = FALSE; \ + \ + if (_ptr && (_pptr = *_ptr)) { \ + *_ptr = NULL; \ + nmp_object_unref(NMP_OBJECT_UP_CAST(_pptr)); \ + _changed = TRUE; \ + } \ + _changed; \ + }) + static inline gboolean nmp_object_ref_set(const NMPObject **pp, const NMPObject *obj) { @@ -643,6 +657,25 @@ nmp_object_ref_set(const NMPObject **pp, const NMPObject *obj) return _changed; } +static inline gboolean +nmp_object_ref_set_up_cast(gpointer pp, gconstpointer obj) +{ + gboolean _changed = FALSE; + const NMPObject *p; + gconstpointer * pp2 = pp; + + nm_assert(!pp2 || !*pp2 || NMP_OBJECT_IS_VALID(NMP_OBJECT_UP_CAST(*pp2))); + nm_assert(!obj || NMP_OBJECT_IS_VALID(NMP_OBJECT_UP_CAST(obj))); + + if (pp2 && ((p = *pp2) != obj)) { + nmp_object_ref(NMP_OBJECT_UP_CAST(obj)); + *pp2 = obj; + nmp_object_unref(NMP_OBJECT_UP_CAST(p)); + _changed = TRUE; + } + return _changed; +} + NMPObject *nmp_object_new(NMPObjectType obj_type, gconstpointer plobj); NMPObject *nmp_object_new_link(int ifindex); |