Mercurial > hg > nginx
annotate src/event/ngx_event_connect.c @ 119:cd54bcbaf3b5
nginx-0.0.1-2003-07-21-01:15:59 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Sun, 20 Jul 2003 21:15:59 +0000 |
parents | 3973260705cc |
children | b776ad95d96d |
rev | line source |
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86
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nginx-0.0.1-2003-05-12-19:52:24 import
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1 |
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2 #include <ngx_event_connect.h> |
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nginx-0.0.1-2003-05-12-19:52:24 import
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5 int ngx_event_connect_peer(ngx_connect_peer_t *cp) |
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6 { |
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7 time_t now; |
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8 |
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9 /* TODO: cached connection */ |
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10 |
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11 now = ngx_time(); |
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13 if (cp->peers->number > 1) { |
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14 |
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15 /* there are several peers */ |
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16 |
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17 if (cp->tries == cp->peers->number) { |
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18 |
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19 /* it's a first try - get a current peer */ |
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20 |
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21 /* Here is the race condition when the peers are shared between |
86
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22 the threads or the processes but it should not be serious */ |
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23 |
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24 cp->cur_peer = cp->peers->current++; |
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25 |
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26 if (cp->peers->current >= cp->peers->number) { |
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27 cp->peers->current = 0; |
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28 } |
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29 |
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30 /* the end of the race condition */ |
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31 |
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32 #if (NGX_MULTITHREADED || NGX_MULTIPROCESSED) |
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33 /* eliminate the sequences of the race condition */ |
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34 |
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35 if (cp->cur_peer >= cp->peers->number) { |
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36 cp->cur_peer = 0; |
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37 } |
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38 #endif |
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39 } |
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40 |
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41 if (cp->peers->max_fails > 0) { |
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42 |
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43 /* the peers support a fault tolerance */ |
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44 |
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45 for ( ;; ) { |
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nginx-0.0.1-2003-05-12-19:52:24 import
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46 peer = &cp->peers->peers[cp->cur_peer]; |
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47 |
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48 /* Here is the race condition when the peers are shared between |
86
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49 the threads or the processes but it should not be serious */ |
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50 |
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51 if (peer->fails <= cp->peers->max_fails |
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52 || (now - peer->accessed > cp->peers->fail_timeout)) |
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53 { |
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54 break; |
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55 } |
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56 |
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57 /* the end of the race condition */ |
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58 |
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59 cp->cur_peer++; |
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60 |
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61 if (cp->cur_peer >= cp->peers->number) { |
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62 cp->cur_peer = 0; |
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63 } |
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64 |
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65 cp->tries--; |
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66 |
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67 if (cp->tries == 0) { |
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68 return NGX_ERROR; |
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69 } |
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70 } |
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71 } |
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72 } |
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73 |
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74 |
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75 |
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76 |
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78 s = ngx_socket(AF_INET, SOCK_STREAM, IPPROTO_IP, 0); |
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79 |
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80 if (s == -1) { |
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81 ngx_log_error(NGX_LOG_ALERT, cp->log, ngx_socket_errno, |
86
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82 ngx_socket_n " failed"); |
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83 return NGX_ERROR; |
86
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84 } |
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85 |
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86 if (cp->rcvbuf) { |
86
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87 if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, |
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88 (const void *) &cp->rcvbuf, sizeof(int)) == -1) { |
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89 ngx_log_error(NGX_LOG_ALERT, cp->log, ngx_socket_errno, |
86
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90 "setsockopt(SO_RCVBUF) failed"); |
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91 |
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92 if (ngx_close_socket(s) == -1) { |
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93 ngx_log_error(NGX_LOG_ALERT, cp->log, ngx_socket_errno, |
86
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94 ngx_close_socket_n " failed"); |
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95 } |
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96 |
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97 return NGX_ERROR; |
86
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98 } |
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99 } |
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100 |
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101 if (ngx_nonblocking(s) == -1) { |
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102 ngx_log_error(NGX_LOG_ALERT, cn->log, ngx_socket_errno, |
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103 ngx_nonblocking_n " failed"); |
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104 |
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105 if (ngx_close_socket(s) == -1) { |
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106 ngx_log_error(NGX_LOG_ALERT, cn->log, ngx_socket_errno, |
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107 ngx_close_socket_n " failed"); |
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108 } |
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109 |
119
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110 return NGX_ERROR; |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
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111 } |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
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112 |
119
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113 #if (WIN32) |
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114 /* |
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115 * Winsock assignes a socket number divisible by 4 |
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116 * so to find a connection we divide a socket number by 4. |
cd54bcbaf3b5
nginx-0.0.1-2003-07-21-01:15:59 import
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117 */ |
cd54bcbaf3b5
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Igor Sysoev <igor@sysoev.ru>
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118 |
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119 if (s % 4) { |
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120 ngx_log_error(NGX_LOG_EMERG, cp->log, 0, |
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121 ngx_socket_n |
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122 " created socket %d, not divisible by 4", s); |
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nginx-0.0.1-2003-07-21-01:15:59 import
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123 exit(1); |
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124 } |
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Igor Sysoev <igor@sysoev.ru>
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125 |
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126 c = &ngx_cycle->connections[s / 4]; |
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127 rev = &ngx_cycle->read_events[s / 4]; |
cd54bcbaf3b5
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128 wev = &ngx_cycle->write_events[s / 4]; |
cd54bcbaf3b5
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129 |
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130 #else |
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131 |
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132 c = &ngx_cycle->connections[s]; |
cd54bcbaf3b5
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133 rev = &ngx_cycle->read_events[s]; |
cd54bcbaf3b5
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134 wev = &ngx_cycle->write_events[s]; |
cd54bcbaf3b5
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135 |
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nginx-0.0.1-2003-07-21-01:15:59 import
Igor Sysoev <igor@sysoev.ru>
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136 #endif |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
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137 |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
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138 instance = rev->instance; |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
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139 |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
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140 ngx_memzero(c, sizeof(ngx_connection_t)); |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
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141 ngx_memzero(rev, sizeof(ngx_event_t)); |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
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parents:
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142 ngx_memzero(wev, sizeof(ngx_event_t)); |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
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143 |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
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144 rev->index = wev->index = NGX_INVALID_INDEX; |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
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145 rev->data = wev->data = c; |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
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146 c->read = rev; |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
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147 c->write = wev; |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
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148 |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
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149 rev->instance = wev->instance = !instance; |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
150 |
119
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Igor Sysoev <igor@sysoev.ru>
parents:
86
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|
151 !!!!!!!!!!!!!!! |
cd54bcbaf3b5
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Igor Sysoev <igor@sysoev.ru>
parents:
86
diff
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152 |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
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153 rev->log = wev->log = c->log = cn->log; |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
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154 c->fd = s; |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
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155 wev->close_handler = rev->close_handler = ngx_event_close_connection; |
119
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156 } |