| |
| /* |
| * Copyright (C) Igor Sysoev |
| * Copyright (C) Nginx, Inc. |
| */ |
| |
| |
| #ifndef _NGX_HTTP_UPSTREAM_ROUND_ROBIN_H_INCLUDED_ |
| #define _NGX_HTTP_UPSTREAM_ROUND_ROBIN_H_INCLUDED_ |
| |
| |
| #include <ngx_config.h> |
| #include <ngx_core.h> |
| #include <ngx_http.h> |
| |
| |
| typedef struct ngx_http_upstream_rr_peer_s ngx_http_upstream_rr_peer_t; |
| |
| struct ngx_http_upstream_rr_peer_s { |
| struct sockaddr *sockaddr; |
| socklen_t socklen; |
| ngx_str_t name; |
| ngx_str_t server; |
| |
| ngx_int_t current_weight; |
| ngx_int_t effective_weight; |
| ngx_int_t weight; |
| |
| ngx_uint_t conns; |
| ngx_uint_t max_conns; |
| |
| ngx_uint_t fails; |
| time_t accessed; |
| time_t checked; |
| |
| ngx_uint_t max_fails; |
| time_t fail_timeout; |
| ngx_msec_t slow_start; |
| ngx_msec_t start_time; |
| |
| ngx_uint_t down; |
| |
| #if (NGX_HTTP_SSL || NGX_COMPAT) |
| void *ssl_session; |
| int ssl_session_len; |
| #endif |
| |
| #if (NGX_HTTP_UPSTREAM_ZONE || NGX_COMPAT) |
| ngx_atomic_t lock; |
| #endif |
| |
| ngx_http_upstream_rr_peer_t *next; |
| |
| NGX_COMPAT_BEGIN(32) |
| NGX_COMPAT_END |
| }; |
| |
| |
| typedef struct ngx_http_upstream_rr_peers_s ngx_http_upstream_rr_peers_t; |
| |
| struct ngx_http_upstream_rr_peers_s { |
| ngx_uint_t number; |
| |
| #if (NGX_HTTP_UPSTREAM_ZONE || NGX_COMPAT) |
| ngx_slab_pool_t *shpool; |
| ngx_atomic_t rwlock; |
| ngx_http_upstream_rr_peers_t *zone_next; |
| #endif |
| |
| ngx_uint_t total_weight; |
| ngx_uint_t tries; |
| |
| unsigned single:1; |
| unsigned weighted:1; |
| |
| ngx_str_t *name; |
| |
| ngx_http_upstream_rr_peers_t *next; |
| |
| ngx_http_upstream_rr_peer_t *peer; |
| }; |
| |
| |
| #if (NGX_HTTP_UPSTREAM_ZONE || NGX_COMPAT) |
| |
| #define ngx_http_upstream_rr_peers_rlock(peers) \ |
| \ |
| if (peers->shpool) { \ |
| ngx_rwlock_rlock(&peers->rwlock); \ |
| } |
| |
| #define ngx_http_upstream_rr_peers_wlock(peers) \ |
| \ |
| if (peers->shpool) { \ |
| ngx_rwlock_wlock(&peers->rwlock); \ |
| } |
| |
| #define ngx_http_upstream_rr_peers_unlock(peers) \ |
| \ |
| if (peers->shpool) { \ |
| ngx_rwlock_unlock(&peers->rwlock); \ |
| } |
| |
| |
| #define ngx_http_upstream_rr_peer_lock(peers, peer) \ |
| \ |
| if (peers->shpool) { \ |
| ngx_rwlock_wlock(&peer->lock); \ |
| } |
| |
| #define ngx_http_upstream_rr_peer_unlock(peers, peer) \ |
| \ |
| if (peers->shpool) { \ |
| ngx_rwlock_unlock(&peer->lock); \ |
| } |
| |
| #else |
| |
| #define ngx_http_upstream_rr_peers_rlock(peers) |
| #define ngx_http_upstream_rr_peers_wlock(peers) |
| #define ngx_http_upstream_rr_peers_unlock(peers) |
| #define ngx_http_upstream_rr_peer_lock(peers, peer) |
| #define ngx_http_upstream_rr_peer_unlock(peers, peer) |
| |
| #endif |
| |
| |
| typedef struct { |
| ngx_uint_t config; |
| ngx_http_upstream_rr_peers_t *peers; |
| ngx_http_upstream_rr_peer_t *current; |
| uintptr_t *tried; |
| uintptr_t data; |
| } ngx_http_upstream_rr_peer_data_t; |
| |
| |
| ngx_int_t ngx_http_upstream_init_round_robin(ngx_conf_t *cf, |
| ngx_http_upstream_srv_conf_t *us); |
| ngx_int_t ngx_http_upstream_init_round_robin_peer(ngx_http_request_t *r, |
| ngx_http_upstream_srv_conf_t *us); |
| ngx_int_t ngx_http_upstream_create_round_robin_peer(ngx_http_request_t *r, |
| ngx_http_upstream_resolved_t *ur); |
| ngx_int_t ngx_http_upstream_get_round_robin_peer(ngx_peer_connection_t *pc, |
| void *data); |
| void ngx_http_upstream_free_round_robin_peer(ngx_peer_connection_t *pc, |
| void *data, ngx_uint_t state); |
| |
| #if (NGX_HTTP_SSL) |
| ngx_int_t |
| ngx_http_upstream_set_round_robin_peer_session(ngx_peer_connection_t *pc, |
| void *data); |
| void ngx_http_upstream_save_round_robin_peer_session(ngx_peer_connection_t *pc, |
| void *data); |
| #endif |
| |
| |
| #endif /* _NGX_HTTP_UPSTREAM_ROUND_ROBIN_H_INCLUDED_ */ |