ngx_log_debug0    124 core/ngx_log.h #define ngx_log_debug0  ngx_log_debug
ngx_log_debug0    137 core/ngx_log.h #define ngx_log_debug0(level, log, err, fmt)                                  \
ngx_log_debug0    182 core/ngx_log.h #define ngx_log_debug0(level, log, err, fmt)