X-Git-Url: http://git.itanic.dy.fi/?p=log-plotter;a=blobdiff_plain;f=utils.h;h=102dc65339fe06e9feb2410754eb393474b0b57f;hp=8b5152ef8c4e6158f70b60822a8efe6e07ea9e72;hb=9abf935040bd368c4b3c1828a79691d200fd45a9;hpb=4daad2abbacb183bc39d7ef1220e86afe6068b5d

diff --git a/utils.h b/utils.h
index 8b5152e..102dc65 100644
--- a/utils.h
+++ b/utils.h
@@ -3,4 +3,14 @@
 
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
 
+#ifndef offsetof
+#define offsetof(type, member)  __builtin_offsetof (type, member)
+#endif
+
+#define container_of(ptr, type, member) \
+	({								\
+		const typeof( ((type *)0)->member ) *__mptr = (ptr);	\
+		(type *)( (char *)__mptr - offsetof(type,member) );	\
+	})
+
 #endif