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src/os/unix/ngx_posix_init.c - nginx-1.7.10

Global variables defined

Functions defined

Source code


  2. /*
  3. * Copyright (C) Igor Sysoev
  4. * Copyright (C) Nginx, Inc.
  5. */


  8. #include <ngx_config.h>
  9. #include <ngx_core.h>
  10. #include <nginx.h>


  13. ‌ngx_int_t   ngx_ncpu;
  14. ‌ngx_int_t   ngx_max_sockets;
  15. ‌ngx_uint_t  ngx_inherited_nonblocking;
  16. ‌ngx_uint_t  ngx_tcp_nodelay_and_tcp_nopush;


  19. ‌struct rlimit  rlmt;


  22. ‌ngx_os_io_t ngx_os_io = {
  23.     ngx_unix_recv,
  24.     ngx_readv_chain,
  25.     ngx_udp_unix_recv,
  26.     ngx_unix_send,
  27.     ngx_writev_chain,
  28.     0
  29. };


  32. ngx_int_t
  33. ‌ngx_os_init(ngx_log_t *log)
  34. {
  35.     ngx_uint_t  n;

  37. #if (NGX_HAVE_OS_SPECIFIC_INIT)
  38.     if (ngx_os_specific_init(log) != NGX_OK) {
  39.         return NGX_ERROR;
  40.     }
  41. #endif

  43.     if (ngx_init_setproctitle(log) != NGX_OK) {
  44.         return NGX_ERROR;
  45.     }

  47.     ngx_pagesize = getpagesize();
  48.     ngx_cacheline_size = NGX_CPU_CACHE_LINE;

  50.     for (n = ngx_pagesize; n >>= 1; ngx_pagesize_shift++) { /* void */ }

  52. #if (NGX_HAVE_SC_NPROCESSORS_ONLN)
  53.     if (ngx_ncpu == 0) {
  54.         ngx_ncpu = sysconf(_SC_NPROCESSORS_ONLN);
  55.     }
  56. #endif

  58.     if (ngx_ncpu < 1) {
  59.         ngx_ncpu = 1;
  60.     }

  62.     ngx_cpuinfo();

  64.     if (getrlimit(RLIMIT_NOFILE, &rlmt) == -1) {
  65.         ngx_log_error(NGX_LOG_ALERT, log, errno,
  66.                       "getrlimit(RLIMIT_NOFILE) failed)");
  67.         return NGX_ERROR;
  68.     }

  70.     ngx_max_sockets = (ngx_int_t) rlmt.rlim_cur;

  72. #if (NGX_HAVE_INHERITED_NONBLOCK || NGX_HAVE_ACCEPT4)
  73.     ngx_inherited_nonblocking = 1;
  74. #else
  75.     ngx_inherited_nonblocking = 0;
  76. #endif

  78.     srandom(ngx_time());

  80.     return NGX_OK;
  81. }


  84. void
  85. ‌ngx_os_status(ngx_log_t *log)
  86. {
  87.     ngx_log_error(NGX_LOG_NOTICE, log, 0, NGINX_VER_BUILD);

  89. #ifdef NGX_COMPILER
  90.     ngx_log_error(NGX_LOG_NOTICE, log, 0, "built by " NGX_COMPILER);
  91. #endif

  93. #if (NGX_HAVE_OS_SPECIFIC_INIT)
  94.     ngx_os_specific_status(log);
  95. #endif

  97.     ngx_log_error(NGX_LOG_NOTICE, log, 0,
  98.                   "getrlimit(RLIMIT_NOFILE): %r:%r",
  99.                   rlmt.rlim_cur, rlmt.rlim_max);
  100. }


  103. #if 0

  105. ngx_int_t
  106. ngx_posix_post_conf_init(ngx_log_t *log)
  107. {
  108.     ngx_fd_t  pp[2];

  110.     if (pipe(pp) == -1) {
  111.         ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "pipe() failed");
  112.         return NGX_ERROR;
  113.     }

  115.     if (dup2(pp[1], STDERR_FILENO) == -1) {
  116.         ngx_log_error(NGX_LOG_EMERG, log, errno, "dup2(STDERR) failed");
  117.         return NGX_ERROR;
  118.     }

  120.     if (pp[1] > STDERR_FILENO) {
  121.         if (close(pp[1]) == -1) {
  122.             ngx_log_error(NGX_LOG_EMERG, log, errno, "close() failed");
  123.             return NGX_ERROR;
  124.         }
  125.     }

  127.     return NGX_OK;
  128. }

  130. #endif

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