ngx_log_debug2    126 core/ngx_log.h #define ngx_log_debug2  ngx_log_debug
ngx_log_debug2    145 core/ngx_log.h #define ngx_log_debug2(level, log, err, fmt, arg1, arg2)                      \
ngx_log_debug2    184 core/ngx_log.h #define ngx_log_debug2(level, log, err, fmt, arg1, arg2)