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annotate src/os/unix/ngx_socket.c @ 346:55e496a8ece3

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nginx-0.0.3-2004-06-06-23:49:18 import
author Igor Sysoev <igor@sysoev.ru>
date Sun, 06 Jun 2004 19:49:18 +0000
parents b6793bc5034b
children eaf1f651cf86
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1
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2 #include <ngx_config.h>
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3 #include <ngx_core.h>
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6 /*
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7 * ioctl(FIONBIO) sets a blocking mode with the single syscall
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8 * while fcntl(F_SETFL, ~O_NONBLOCK) needs to learn before
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9 * a previous state using fcntl(F_GETFL).
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10 *
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11 * ioctl() and fcntl() are syscalls on at least FreeBSD 2.x, Linux 2.2
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55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import
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12 * and Solaris 7.
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13 *
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14 * ioctl() in Linux 2.4 and 2.6 uses BKL, however fcntl(F_SETFL) uses it too.
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15 */
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18 #if (HAVE_FIONBIO)
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20 int ngx_nonblocking(ngx_socket_t s)
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21 {
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22 unsigned long nb = 1;
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24 return ioctl(s, FIONBIO, &nb);
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25 }
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28 int ngx_blocking(ngx_socket_t s)
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29 {
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30 unsigned long nb = 0;
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32 return ioctl(s, FIONBIO, &nb);
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33 }
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35 #endif
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38 #ifdef __FreeBSD__
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40 int ngx_tcp_nopush(ngx_socket_t s)
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41 {
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42 int tcp_nopush;
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44 tcp_nopush = 1;
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46 return setsockopt(s, IPPROTO_TCP, TCP_NOPUSH,
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47 (const void *) &tcp_nopush, sizeof(int));
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48 }
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51 int ngx_tcp_push(ngx_socket_t s)
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52 {
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53 int tcp_nopush;
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55 tcp_nopush = 0;
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57 return setsockopt(s, IPPROTO_TCP, TCP_NOPUSH,
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58 (const void *) &tcp_nopush, sizeof(int));
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59 }
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61 #elif __linux__
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63 int ngx_tcp_nopush(ngx_socket_t s)
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64 {
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65 int cork;
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67 cork = 1;
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68
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69 return setsockopt(s, IPPROTO_TCP, TCP_CORK,
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70 (const void *) &cork, sizeof(int));
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71 }
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72
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73 int ngx_tcp_push(ngx_socket_t s)
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74 {
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75 int cork;
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76
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77 cork = 0;
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78
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79 return setsockopt(s, IPPROTO_TCP, TCP_CORK,
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80 (const void *) &cork, sizeof(int));
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81 }
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82
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83 #else
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84
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85 int ngx_tcp_nopush(ngx_socket_t s)
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86 {
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87 return NGX_OK;
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88 }
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89
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90 int ngx_tcp_push(ngx_socket_t s)
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91 {
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92 return NGX_OK;
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93 }
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94
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95 #endif