Add container_of() macro

This will allow to get the parent of an embedded struct.

Add container_of() macro
This will allow to get the parent of an embedded struct.
620b117a · Romain Vimont · 14e83175 · 620b117a
隐藏空白更改
内联并排

Showing with 3 addition and 0 deletion

app/src/common.h app/src/common.h +3 -0

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--- a/app/src/common.h
+++ b/app/src/common.h
@@ -8,4 +8,7 @@
 #define MIN(X,Y) (X) < (Y) ? (X) : (Y)
 #define MAX(X,Y) (X) > (Y) ? (X) : (Y)

+#define container_of(ptr, type, member) \
+    ((type *) (((char *) (ptr)) - offsetof(type, member)))
+
 #endif