ngx_getpid        265 src/core/nginx.c     ngx_pid = ngx_getpid();
ngx_getpid         29 src/os/unix/ngx_daemon.c     ngx_pid = ngx_getpid();
ngx_getpid        197 src/os/unix/ngx_process.c         ngx_pid = ngx_getpid();