diff options
Diffstat (limited to 'src/shared/macro.h')
| -rw-r--r-- | src/shared/macro.h | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/src/shared/macro.h b/src/shared/macro.h index 4e5d0f4f2f..f884bf653f 100644 --- a/src/shared/macro.h +++ b/src/shared/macro.h @@ -67,9 +67,11 @@ static inline size_t ALIGN_TO(size_t l, size_t ali) { * @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) );}) +#define container_of(ptr, type, member) \ + __extension__ ({ \ + const typeof( ((type *)0)->member ) *__mptr = (ptr); \ + (type *)( (char *)__mptr - offsetof(type,member) ); \ + }) #undef MAX #define MAX(a,b) \ @@ -255,4 +257,14 @@ do { \ } \ } while(false) +/* Returns the number of chars needed to format variables of the + * specified type as a decimal string. Adds in extra space for a + * negative '-' prefix. */ + +#define DECIMAL_STR_MAX(type) \ + (1+(sizeof(type) <= 1 ? 3 : \ + sizeof(type) <= 2 ? 5 : \ + sizeof(type) <= 4 ? 10 : \ + sizeof(type) <= 8 ? 20 : sizeof(int[-2*(sizeof(type) > 8)]))) + #include "log.h" |