This macro abstracts calculating how many items there are 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.clay...@nginx.com> Cc: Zhidao Hong <z.h...@f5.com> Signed-off-by: Alejandro Colomar <a...@nginx.com> --- src/core/ngx_core.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/core/ngx_core.h b/src/core/ngx_core.h index 7ecdca0c..bbca2df2 100644 --- a/src/core/ngx_core.h +++ b/src/core/ngx_core.h @@ -102,6 +102,9 @@ 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) -- 2.37.2 _______________________________________________ nginx-devel mailing list -- nginx-devel@nginx.org To unsubscribe send an email to nginx-devel-le...@nginx.org
