One Level Up Top Level

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

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>


  12. /*
  13. * ioctl(FIONBIO) sets a non-blocking mode with the single syscall
  14. * while fcntl(F_SETFL, O_NONBLOCK) needs to learn the current state
  15. * using fcntl(F_GETFL).
  16. *
  17. * ioctl() and fcntl() are syscalls at least in FreeBSD 2.x, Linux 2.2
  18. * and Solaris 7.
  19. *
  20. * ioctl() in Linux 2.4 and 2.6 uses BKL, however, fcntl(F_SETFL) uses it too.
  21. */


  24. #if (NGX_HAVE_FIONBIO)

  26. int
  27. ‌ngx_nonblocking(ngx_socket_t s)
  28. {
  29.     int  nb;

  31.     nb = 1;

  33.     return ioctl(s, FIONBIO, &nb);
  34. }


  37. int
  38. ‌ngx_blocking(ngx_socket_t s)
  39. {
  40.     int  nb;

  42.     nb = 0;

  44.     return ioctl(s, FIONBIO, &nb);
  45. }

  47. #endif


  50. #if (NGX_FREEBSD)

  52. int
  53. ‌ngx_tcp_nopush(ngx_socket_t s)
  54. {
  55.     int  tcp_nopush;

  57.     tcp_nopush = 1;

  59.     return setsockopt(s, IPPROTO_TCP, TCP_NOPUSH,
  60.                       (const void *) &tcp_nopush, sizeof(int));
  61. }


  64. int
  65. ‌ngx_tcp_push(ngx_socket_t s)
  66. {
  67.     int  tcp_nopush;

  69.     tcp_nopush = 0;

  71.     return setsockopt(s, IPPROTO_TCP, TCP_NOPUSH,
  72.                       (const void *) &tcp_nopush, sizeof(int));
  73. }

  75. #elif (NGX_LINUX)


  78. int
  79. ‌ngx_tcp_nopush(ngx_socket_t s)
  80. {
  81.     int  cork;

  83.     cork = 1;

  85.     return setsockopt(s, IPPROTO_TCP, TCP_CORK,
  86.                       (const void *) &cork, sizeof(int));
  87. }


  90. int
  91. ‌ngx_tcp_push(ngx_socket_t s)
  92. {
  93.     int  cork;

  95.     cork = 0;

  97.     return setsockopt(s, IPPROTO_TCP, TCP_CORK,
  98.                       (const void *) &cork, sizeof(int));
  99. }

  101. #else

  103. int
  104. ‌ngx_tcp_nopush(ngx_socket_t s)
  105. {
  106.     return 0;
  107. }


  110. int
  111. ‌ngx_tcp_push(ngx_socket_t s)
  112. {
  113.     return 0;
  114. }

  116. #endif

One Level Up Top Level