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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9
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10
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11 /*
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12 * ioctl(FIONBIO) sets a blocking mode with the single syscall
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13 * while fcntl(F_SETFL, ~O_NONBLOCK) needs to learn before
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14 * the previous state using fcntl(F_GETFL).
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15 *
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16 * ioctl() and fcntl() are syscalls on at least FreeBSD 2.x, Linux 2.2
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17 * and Solaris 7.
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18 *
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2
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19 * ioctl() in Linux 2.4 and 2.6 uses BKL, however, fcntl(F_SETFL) uses it too.
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0
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20 */
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21
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22
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18
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23 #if (NGX_HAVE_FIONBIO)
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0
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24
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50
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25 int
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26 ngx_nonblocking(ngx_socket_t s)
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0
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27 {
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28 u_long nb;
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29
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30 nb = 1;
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31
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32 return ioctl(s, FIONBIO, &nb);
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33 }
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34
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35
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50
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36 int
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37 ngx_blocking(ngx_socket_t s)
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0
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38 {
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39 u_long nb;
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40
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41 nb = 0;
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42
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43 return ioctl(s, FIONBIO, &nb);
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44 }
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45
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46 #endif
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47
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48
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4
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49 #if (NGX_FREEBSD)
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0
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50
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50
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51 int
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52 ngx_tcp_nopush(ngx_socket_t s)
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0
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53 {
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54 int tcp_nopush;
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55
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56 tcp_nopush = 1;
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57
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58 return setsockopt(s, IPPROTO_TCP, TCP_NOPUSH,
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59 (const void *) &tcp_nopush, sizeof(int));
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60 }
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61
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62
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50
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63 int
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64 ngx_tcp_push(ngx_socket_t s)
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0
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65 {
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66 int tcp_nopush;
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67
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68 tcp_nopush = 0;
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69
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70 return setsockopt(s, IPPROTO_TCP, TCP_NOPUSH,
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71 (const void *) &tcp_nopush, sizeof(int));
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72 }
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73
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4
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74 #elif (NGX_LINUX)
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0
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75
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50
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76 int
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77 ngx_tcp_nopush(ngx_socket_t s)
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0
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78 {
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79 int cork;
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80
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81 cork = 1;
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82
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83 return setsockopt(s, IPPROTO_TCP, TCP_CORK,
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84 (const void *) &cork, sizeof(int));
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85 }
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86
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50
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87 int
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88 ngx_tcp_push(ngx_socket_t s)
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0
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89 {
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90 int cork;
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91
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92 cork = 0;
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93
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94 return setsockopt(s, IPPROTO_TCP, TCP_CORK,
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95 (const void *) &cork, sizeof(int));
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96 }
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97
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98 #else
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99
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100 int
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101 ngx_tcp_nopush(ngx_socket_t s)
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0
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102 {
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103 return 0;
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0
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104 }
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105
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50
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106 int
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107 ngx_tcp_push(ngx_socket_t s)
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0
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108 {
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109 return 0;
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0
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110 }
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111
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112 #endif
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