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[awesomized/libmemcached] / libmemcached-1.0 / struct / server.h
1 /* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
2 *
3 * Libmemcached library
4 *
5 * Copyright (C) 2011 Data Differential, http://datadifferential.com/
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are
10 * met:
11 *
12 * * Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * * Redistributions in binary form must reproduce the above
16 * copyright notice, this list of conditions and the following disclaimer
17 * in the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * * The names of its contributors may not be used to endorse or
21 * promote products derived from this software without specific prior
22 * written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
27 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
28 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
29 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
34 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 *
36 */
37
38
39 #pragma once
40
41 #ifndef WIN32
42 #include <netdb.h>
43 #endif
44
45 #ifdef NI_MAXHOST
46 #define MEMCACHED_NI_MAXHOST NI_MAXHOST
47 #else
48 #define MEMCACHED_NI_MAXHOST 1025
49 #endif
50
51 #ifdef NI_MAXSERV
52 #define MEMCACHED_NI_MAXSERV NI_MAXSERV
53 #else
54 #define MEMCACHED_NI_MAXSERV 32
55 #endif
56
57 enum memcached_server_state_t {
58 MEMCACHED_SERVER_STATE_NEW, // fd == -1, no address lookup has been done
59 MEMCACHED_SERVER_STATE_ADDRINFO, // ADDRRESS information has been gathered
60 MEMCACHED_SERVER_STATE_IN_PROGRESS,
61 MEMCACHED_SERVER_STATE_CONNECTED,
62 MEMCACHED_SERVER_STATE_IN_TIMEOUT
63 };
64
65 struct memcached_server_st {
66 struct {
67 bool is_allocated:1;
68 bool is_initialized:1;
69 bool is_shutting_down:1;
70 bool is_dead:1;
71 } options;
72 uint32_t number_of_hosts;
73 uint32_t cursor_active;
74 in_port_t port;
75 memcached_socket_t fd;
76 uint32_t io_bytes_sent; /* # bytes sent since last read */
77 uint32_t server_failure_counter;
78 uint64_t server_failure_counter_query_id;
79 uint32_t weight;
80 uint32_t version;
81 enum memcached_server_state_t state;
82 struct {
83 uint32_t read;
84 uint32_t write;
85 } io_wait_count;
86 uint8_t major_version; // Default definition of UINT8_MAX means that it has not been set.
87 uint8_t micro_version; // ditto
88 uint8_t minor_version; // ditto
89 memcached_connection_t type;
90 char *read_ptr;
91 size_t read_buffer_length;
92 size_t read_data_length;
93 size_t write_buffer_offset;
94 struct addrinfo *address_info;
95 struct addrinfo *address_info_next;
96 time_t next_retry;
97 struct memcached_st *root;
98 uint64_t limit_maxbytes;
99 struct memcached_error_t *error_messages;
100 char read_buffer[MEMCACHED_MAX_BUFFER];
101 char write_buffer[MEMCACHED_MAX_BUFFER];
102 char hostname[MEMCACHED_NI_MAXHOST];
103 };