diff options
| author | Alejandro Colomar <alx@nginx.com> | 2022-11-07 14:34:58 +0100 |
|---|---|---|
| committer | Alejandro Colomar <alx@nginx.com> | 2023-05-23 20:37:51 +0200 |
| commit | b1938eb20207368cedd9b767138e9cda43a571fc (patch) | |
| tree | 19a5f045dae02e2a0f592fc964b2d0e9d0bccdc6 | |
| parent | 27af6dcb48d8e7ba5c07eba8f0157262222bcf18 (diff) | |
Core: added macro to calculate the length of an array.
This macro abstracts calculating how many items are there in an array.
Since recent versions of GCC and Clang provide a warning if we pass a
pointer to the construct in this macro, it is safe to use without any
further checks that the argument is an array.
Link: <https://stackoverflow.com/a/57537491>
Cc: Andrew Clayton <a.clayton@nginx.com>
Cc: Zhidao Hong <z.hong@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>
| -rw-r--r-- | src/core/ngx_core.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/core/ngx_core.h b/src/core/ngx_core.h index 88db7dc98..229714fdf 100644 --- a/src/core/ngx_core.h +++ b/src/core/ngx_core.h @@ -109,6 +109,9 @@ typedef void (*ngx_connection_handler_pt)(ngx_connection_t *c); #define ngx_max(val1, val2) ((val1 < val2) ? (val2) : (val1)) #define ngx_min(val1, val2) ((val1 > val2) ? (val2) : (val1)) +#define ngx_nitems(arr) (sizeof((arr)) / sizeof((arr)[0])) + + void ngx_cpuinfo(void); #if (NGX_HAVE_OPENAT) |