From cf6b49535ad648d1115a2838fefb382acb298ac5 Mon Sep 17 00:00:00 2001 From: James Cotton Date: Mon, 23 Jul 2012 09:19:28 -0500 Subject: [PATCH] Add pios_struct_helper to PiOS.osx --- flight/PiOS.osx/inc/pios_struct_helper.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) create mode 100644 flight/PiOS.osx/inc/pios_struct_helper.h diff --git a/flight/PiOS.osx/inc/pios_struct_helper.h b/flight/PiOS.osx/inc/pios_struct_helper.h new file mode 100644 index 000000000..6196d9b26 --- /dev/null +++ b/flight/PiOS.osx/inc/pios_struct_helper.h @@ -0,0 +1,12 @@ +/* Taken from include/linux/kernel.h from the Linux kernel tree */ + +/** + * container_of - cast a member of a structure out to the containing structure + * @ptr: the pointer to the member. + * @type: the type of the container struct this is embedded in. + * @member: the name of the member within the struct. + * + */ +#define container_of(ptr, type, member) ({ \ + const typeof( ((type *)0)->member ) *__mptr = (ptr); \ + (type *)( (char *)__mptr - offsetof(type,member) );})