annotate src/stream/ngx_stream_upstream_round_robin.h @ 7682:2ab0ecfe5a5f

release-1.19.1 tag
author Maxim Dounin <mdounin@mdounin.ru>
date Tue, 07 Jul 2020 18:56:06 +0300
parents f41c2530dd17
children 90cc7194e993
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 * Copyright (C) Nginx, Inc.
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5 */
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6
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7
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8 #ifndef _NGX_STREAM_UPSTREAM_ROUND_ROBIN_H_INCLUDED_
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9 #define _NGX_STREAM_UPSTREAM_ROUND_ROBIN_H_INCLUDED_
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10
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11
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12 #include <ngx_config.h>
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13 #include <ngx_core.h>
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14 #include <ngx_stream.h>
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15
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16
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17 typedef struct ngx_stream_upstream_rr_peer_s ngx_stream_upstream_rr_peer_t;
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18
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19 struct ngx_stream_upstream_rr_peer_s {
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20 struct sockaddr *sockaddr;
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21 socklen_t socklen;
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22 ngx_str_t name;
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23 ngx_str_t server;
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24
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25 ngx_int_t current_weight;
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26 ngx_int_t effective_weight;
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27 ngx_int_t weight;
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28
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29 ngx_uint_t conns;
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30 ngx_uint_t max_conns;
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31
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32 ngx_uint_t fails;
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33 time_t accessed;
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34 time_t checked;
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35
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36 ngx_uint_t max_fails;
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37 time_t fail_timeout;
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38 ngx_msec_t slow_start;
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39 ngx_msec_t start_time;
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40
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41 ngx_uint_t down;
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42
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43 void *ssl_session;
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44 int ssl_session_len;
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45
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46 #if (NGX_STREAM_UPSTREAM_ZONE)
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47 ngx_atomic_t lock;
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48 #endif
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49
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50 ngx_stream_upstream_rr_peer_t *next;
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51
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52 NGX_COMPAT_BEGIN(25)
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53 NGX_COMPAT_END
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54 };
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55
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56
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57 typedef struct ngx_stream_upstream_rr_peers_s ngx_stream_upstream_rr_peers_t;
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58
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59 struct ngx_stream_upstream_rr_peers_s {
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60 ngx_uint_t number;
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61
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62 #if (NGX_STREAM_UPSTREAM_ZONE)
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63 ngx_slab_pool_t *shpool;
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64 ngx_atomic_t rwlock;
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65 ngx_stream_upstream_rr_peers_t *zone_next;
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66 #endif
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67
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68 ngx_uint_t total_weight;
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69
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70 unsigned single:1;
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71 unsigned weighted:1;
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72
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73 ngx_str_t *name;
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74
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75 ngx_stream_upstream_rr_peers_t *next;
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76
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77 ngx_stream_upstream_rr_peer_t *peer;
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78 };
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79
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80
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81 #if (NGX_STREAM_UPSTREAM_ZONE)
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82
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83 #define ngx_stream_upstream_rr_peers_rlock(peers) \
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84 \
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85 if (peers->shpool) { \
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86 ngx_rwlock_rlock(&peers->rwlock); \
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87 }
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88
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89 #define ngx_stream_upstream_rr_peers_wlock(peers) \
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90 \
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91 if (peers->shpool) { \
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92 ngx_rwlock_wlock(&peers->rwlock); \
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93 }
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94
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95 #define ngx_stream_upstream_rr_peers_unlock(peers) \
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96 \
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97 if (peers->shpool) { \
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98 ngx_rwlock_unlock(&peers->rwlock); \
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99 }
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100
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101
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102 #define ngx_stream_upstream_rr_peer_lock(peers, peer) \
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103 \
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104 if (peers->shpool) { \
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105 ngx_rwlock_wlock(&peer->lock); \
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106 }
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107
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108 #define ngx_stream_upstream_rr_peer_unlock(peers, peer) \
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109 \
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110 if (peers->shpool) { \
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111 ngx_rwlock_unlock(&peer->lock); \
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112 }
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113
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114 #else
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115
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116 #define ngx_stream_upstream_rr_peers_rlock(peers)
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117 #define ngx_stream_upstream_rr_peers_wlock(peers)
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118 #define ngx_stream_upstream_rr_peers_unlock(peers)
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119 #define ngx_stream_upstream_rr_peer_lock(peers, peer)
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120 #define ngx_stream_upstream_rr_peer_unlock(peers, peer)
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121
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122 #endif
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123
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124
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125 typedef struct {
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126 ngx_uint_t config;
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127 ngx_stream_upstream_rr_peers_t *peers;
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128 ngx_stream_upstream_rr_peer_t *current;
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129 uintptr_t *tried;
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130 uintptr_t data;
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131 } ngx_stream_upstream_rr_peer_data_t;
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132
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133
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134 ngx_int_t ngx_stream_upstream_init_round_robin(ngx_conf_t *cf,
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135 ngx_stream_upstream_srv_conf_t *us);
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136 ngx_int_t ngx_stream_upstream_init_round_robin_peer(ngx_stream_session_t *s,
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137 ngx_stream_upstream_srv_conf_t *us);
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138 ngx_int_t ngx_stream_upstream_create_round_robin_peer(ngx_stream_session_t *s,
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139 ngx_stream_upstream_resolved_t *ur);
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140 ngx_int_t ngx_stream_upstream_get_round_robin_peer(ngx_peer_connection_t *pc,
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141 void *data);
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142 void ngx_stream_upstream_free_round_robin_peer(ngx_peer_connection_t *pc,
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143 void *data, ngx_uint_t state);
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144
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145
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146 #endif /* _NGX_STREAM_UPSTREAM_ROUND_ROBIN_H_INCLUDED_ */