ngx_log_debug0    135 src/core/ngx_log.h #define ngx_log_debug0(level, log, err, fmt)                                  \
ngx_log_debug0    171 src/core/ngx_log.h #define ngx_log_debug0(level, log, err, fmt)                                  \
ngx_log_debug0    216 src/core/ngx_log.h #define ngx_log_debug0(level, log, err, fmt)