Mercurial > hg > nginx-quic
view src/os/unix/ngx_posix_init.c @ 4569:1db899642518
Upstream: reject upstreams without normal servers.
Such upstreams cause CPU hog later in the code as number of peers isn't
expected to be 0. Currently this may happen either if there are only backup
servers defined in an upstream block, or if server with ipv6 address used
in an upstream block.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 02 Apr 2012 21:29:35 +0000 |
parents | ccb2f8e3d08d |
children | 4c36e15651f7 |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <nginx.h> ngx_int_t ngx_ncpu; ngx_int_t ngx_max_sockets; ngx_uint_t ngx_inherited_nonblocking; ngx_uint_t ngx_tcp_nodelay_and_tcp_nopush; struct rlimit rlmt; ngx_os_io_t ngx_os_io = { ngx_unix_recv, ngx_readv_chain, ngx_udp_unix_recv, ngx_unix_send, ngx_writev_chain, 0 }; ngx_int_t ngx_os_init(ngx_log_t *log) { ngx_uint_t n; #if (NGX_HAVE_OS_SPECIFIC_INIT) if (ngx_os_specific_init(log) != NGX_OK) { return NGX_ERROR; } #endif ngx_init_setproctitle(log); ngx_pagesize = getpagesize(); ngx_cacheline_size = NGX_CPU_CACHE_LINE; for (n = ngx_pagesize; n >>= 1; ngx_pagesize_shift++) { /* void */ } #if (NGX_HAVE_SC_NPROCESSORS_ONLN) if (ngx_ncpu == 0) { ngx_ncpu = sysconf(_SC_NPROCESSORS_ONLN); } #endif if (ngx_ncpu < 1) { ngx_ncpu = 1; } ngx_cpuinfo(); if (getrlimit(RLIMIT_NOFILE, &rlmt) == -1) { ngx_log_error(NGX_LOG_ALERT, log, errno, "getrlimit(RLIMIT_NOFILE) failed)"); return NGX_ERROR; } ngx_max_sockets = (ngx_int_t) rlmt.rlim_cur; #if (NGX_HAVE_INHERITED_NONBLOCK || NGX_HAVE_ACCEPT4) ngx_inherited_nonblocking = 1; #else ngx_inherited_nonblocking = 0; #endif srandom(ngx_time()); return NGX_OK; } void ngx_os_status(ngx_log_t *log) { ngx_log_error(NGX_LOG_NOTICE, log, 0, NGINX_VER); #ifdef NGX_COMPILER ngx_log_error(NGX_LOG_NOTICE, log, 0, "built by " NGX_COMPILER); #endif #if (NGX_HAVE_OS_SPECIFIC_INIT) ngx_os_specific_status(log); #endif ngx_log_error(NGX_LOG_NOTICE, log, 0, "getrlimit(RLIMIT_NOFILE): %r:%r", rlmt.rlim_cur, rlmt.rlim_max); } ngx_int_t ngx_posix_post_conf_init(ngx_log_t *log) { ngx_fd_t pp[2]; if (pipe(pp) == -1) { ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "pipe() failed"); return NGX_ERROR; } if (dup2(pp[1], STDERR_FILENO) == -1) { ngx_log_error(NGX_LOG_EMERG, log, errno, "dup2(STDERR) failed"); return NGX_ERROR; } if (pp[1] > STDERR_FILENO) { if (close(pp[1]) == -1) { ngx_log_error(NGX_LOG_EMERG, log, errno, "close() failed"); return NGX_ERROR; } } return NGX_OK; }