macros: implement count_of()

7 years ago · 8c8e7fc67c
parent 928487b58e
commit 8c8e7fc67c
1 changed files with 2 additions and 0 deletions
--- a/include/macros.h
+++ b/include/macros.h
@ -17,6 +17,8 @@
 #define MIB (1024 * KIB)
 #define GIB (1024 * MIB)

+#define count_of(x) (sizeof(x) / sizeof(*(x)))
+
 #define container_of(ptr, type, member) \
 	(type *)((char *)ptr - offsetof(type, member))