list: add LIST_POP() helper that pops the first item off a linked list

2021-11-25 12:10:03 +01:00
parent 2a703778e9
commit 55cb63bf6e
2 changed files with 18 additions and 0 deletions
@@ -181,3 +181,12 @@
                }                                                       \
                (b) = NULL;                                             \
        } while (false)
+
+#define LIST_POP(name, a)                                               \
+        ({                                                              \
+                typeof(a)* _a = &(a);                                   \
+                typeof(a) _p = *_a;                                     \
+                if (_p)                                                 \
+                        LIST_REMOVE(name, *_a, _p);                     \
+                _p;                                                     \
+        })