Re: [alsa-devel] [PATCH v2 3/3] topology: A API calls to directly build topology data from templates

On Tue, 2015-08-11 at 09:57 +0200, Takashi Iwai wrote:

...

@@ -34,6 +34,10 @@ #define ALSA_TPLG_DIR ALSA_CONFIG_DIR "/topology" #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))

+#define container_of(ptr, type, member) ({ \

•  const typeof( ((type *)0)->member ) *__mptr = (ptr);    \
  

• (type *)( (char *)__mptr - offsetof(type,member) );})
  

This is a pretty common macro, so I prefer having it in include/local.h.

I'll also move ARRAY_SIZE() to local.h too since it's common.

Liam