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/* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Libmemcached library
*
* Copyright (C) 2011 Data Differential, http://datadifferential.com/
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* * The names of its contributors may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#pragma once
#ifdef HAVE_NETDB_H
# include <netdb.h>
#endif
#ifdef NI_MAXHOST
# define MEMCACHED_NI_MAXHOST NI_MAXHOST
#else
# define MEMCACHED_NI_MAXHOST 1025
#endif
#ifdef NI_MAXSERV
# define MEMCACHED_NI_MAXSERV NI_MAXSERV
#else
# define MEMCACHED_NI_MAXSERV 32
#endif
enum memcached_server_state_t {
MEMCACHED_SERVER_STATE_NEW, // fd == -1, no address lookup has been done
MEMCACHED_SERVER_STATE_ADDRINFO, // ADDRRESS information has been gathered
MEMCACHED_SERVER_STATE_IN_PROGRESS,
MEMCACHED_SERVER_STATE_CONNECTED,
MEMCACHED_SERVER_STATE_IN_TIMEOUT,
MEMCACHED_SERVER_STATE_DISABLED
};
struct memcached_server_st {
struct {
bool is_allocated:1;
bool is_initialized:1;
bool is_shutting_down:1;
bool is_dead:1;
} options;
uint32_t number_of_hosts;
uint32_t cursor_active;
in_port_t port;
uint32_t io_bytes_sent; /* # bytes sent since last read */
uint32_t request_id;
uint32_t server_failure_counter;
uint64_t server_failure_counter_query_id;
uint32_t server_timeout_counter;
uint64_t server_timeout_counter_query_id;
uint32_t weight;
uint32_t version;
enum memcached_server_state_t state;
struct {
uint32_t read;
uint32_t write;
uint32_t timeouts;
size_t _bytes_read;
} io_wait_count;
uint8_t major_version; // Default definition of UINT8_MAX means that it has not been set.
uint8_t micro_version; // ditto, and note that this is the third, not second version bit
uint8_t minor_version; // ditto
memcached_connection_t type;
time_t next_retry;
struct memcached_st *root;
uint64_t limit_maxbytes;
struct memcached_error_t *error_messages;
char hostname[MEMCACHED_NI_MAXHOST];
};
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