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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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23 #if (HAVE_FIONBIO)
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24
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25 int ngx_nonblocking(ngx_socket_t s)
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26 {
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27 u_long nb;
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28
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29 nb = 1;
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30
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31 return ioctl(s, FIONBIO, &nb);
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32 }
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33
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34
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35 int ngx_blocking(ngx_socket_t s)
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36 {
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37 u_long nb;
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38
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39 nb = 0;
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40
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41 return ioctl(s, FIONBIO, &nb);
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42 }
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43
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44 #endif
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45
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46
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4
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47 #if (NGX_FREEBSD)
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48
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49 int ngx_tcp_nopush(ngx_socket_t s)
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50 {
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51 int tcp_nopush;
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52
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53 tcp_nopush = 1;
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54
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55 return setsockopt(s, IPPROTO_TCP, TCP_NOPUSH,
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56 (const void *) &tcp_nopush, sizeof(int));
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57 }
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58
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59
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60 int ngx_tcp_push(ngx_socket_t s)
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61 {
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62 int tcp_nopush;
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63
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64 tcp_nopush = 0;
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65
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66 return setsockopt(s, IPPROTO_TCP, TCP_NOPUSH,
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67 (const void *) &tcp_nopush, sizeof(int));
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68 }
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69
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4
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70 #elif (NGX_LINUX)
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71
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72 int ngx_tcp_nopush(ngx_socket_t s)
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73 {
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74 int cork;
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75
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76 cork = 1;
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77
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78 return setsockopt(s, IPPROTO_TCP, TCP_CORK,
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79 (const void *) &cork, sizeof(int));
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80 }
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81
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82 int ngx_tcp_push(ngx_socket_t s)
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83 {
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84 int cork;
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85
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86 cork = 0;
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87
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88 return setsockopt(s, IPPROTO_TCP, TCP_CORK,
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89 (const void *) &cork, sizeof(int));
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90 }
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91
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92 #else
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93
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94 int ngx_tcp_nopush(ngx_socket_t s)
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95 {
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96 return NGX_OK;
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97 }
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98
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99 int ngx_tcp_push(ngx_socket_t s)
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100 {
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101 return NGX_OK;
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102 }
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103
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104 #endif
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