ngx_gettimeofday   91 src/core/ngx_times.c     ngx_gettimeofday(&tv);
ngx_gettimeofday  207 src/core/ngx_times.c     ngx_gettimeofday(&tv);
ngx_gettimeofday  836 src/http/modules/ngx_http_userid_filter_module.c     ngx_gettimeofday(&tp);