+++ /dev/null
-/* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
- *
- * Libmemcached library
- *
- * Copyright (C) 2011 Data Differential, http://datadifferential.com/
- * Copyright (C) 2006-2009 Brian Aker 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.
- *
- */
-
-#include <libmemcached/common.h>
-
-static inline void _server_init(memcached_instance_st* self, Memcached *root,
- const memcached_string_t& hostname,
- in_port_t port,
- uint32_t weight, memcached_connection_t type)
-{
- self->options.is_shutting_down= false;
- self->options.is_dead= false;
- self->options.ready= false;
- self->_events= 0;
- self->_revents= 0;
- self->cursor_active_= 0;
- self->port_= port;
- self->fd= INVALID_SOCKET;
- self->io_bytes_sent= 0;
- self->request_id= 0;
- self->server_failure_counter= 0;
- self->server_failure_counter_query_id= 0;
- self->server_timeout_counter= 0;
- self->server_timeout_counter_query_id= 0;
- self->weight= weight ? weight : 1; // 1 is the default weight value
- self->io_wait_count.read= 0;
- self->io_wait_count.write= 0;
- self->io_wait_count.timeouts= 0;
- self->io_wait_count._bytes_read= 0;
- self->major_version= UINT8_MAX;
- self->micro_version= UINT8_MAX;
- self->minor_version= UINT8_MAX;
- self->type= type;
- self->error_messages= NULL;
- self->read_ptr= self->read_buffer;
- self->read_buffer_length= 0;
- self->write_buffer_offset= 0;
- self->address_info= NULL;
- self->address_info_next= NULL;
-
- self->state= MEMCACHED_SERVER_STATE_NEW;
- self->next_retry= 0;
-
- self->root= root;
- if (root)
- {
- self->version= ++root->server_info.version;
- }
- else
- {
- self->version= UINT_MAX;
- }
- self->limit_maxbytes= 0;
- self->hostname(hostname);
-}
-
-static memcached_instance_st* _server_create(memcached_instance_st* self, const memcached_st *memc)
-{
- if (self == NULL)
- {
- self= libmemcached_xmalloc(memc, memcached_instance_st);
-
- if (self == NULL)
- {
- return NULL; /* MEMCACHED_MEMORY_ALLOCATION_FAILURE */
- }
-
- self->options.is_allocated= true;
- }
- else
- {
- self->options.is_allocated= false;
- }
-
- self->options.is_initialized= true;
-
- return self;
-}
-
-void memcached_instance_st::events(short arg)
-{
- if ((_events | arg) == _events)
- {
- return;
- }
-
- _events|= arg;
-}
-
-void memcached_instance_st::revents(short arg)
-{
- if (arg)
- {
- options.ready= true;
- }
-
- _revents= arg;
- _events&= short(~arg);
-}
-
-memcached_instance_st* __instance_create_with(memcached_st *memc,
- memcached_instance_st* self,
- const memcached_string_t& hostname,
- const in_port_t port,
- uint32_t weight,
- const memcached_connection_t type)
-{
- if (memcached_is_valid_servername(hostname) == false)
- {
- memcached_set_error(*memc, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT, memcached_literal_param("Invalid hostname provided"));
- return NULL;
- }
-
- self= _server_create(self, memc);
-
- if (self == NULL)
- {
- return NULL;
- }
-
- _server_init(self, const_cast<memcached_st *>(memc), hostname, port, weight, type);
-
- if (memc and memcached_is_udp(memc))
- {
- self->write_buffer_offset= UDP_DATAGRAM_HEADER_LENGTH;
- memcached_io_init_udp_header(self, 0);
- }
-
- return self;
-}
-
-void __instance_free(memcached_instance_st* self)
-{
- memcached_quit_server(self, false);
-
- self->clear_addrinfo();
- assert(self->address_info_next == NULL);
-
- memcached_error_free(*self);
-
- if (memcached_is_allocated(self))
- {
- libmemcached_free(self->root, self);
- }
- else
- {
- self->options.is_initialized= false;
- }
-}
-
-void memcached_instance_free(memcached_instance_st* self)
-{
- if (self)
- {
- __instance_free(self);
- }
-}
-
-memcached_return_t memcached_server_cursor(const memcached_st* shell,
- const memcached_server_fn *callback,
- void *context,
- uint32_t number_of_callbacks)
-{
- const Memcached* memc= memcached2Memcached(shell);
- memcached_return_t rc;
- if (memcached_failed(rc= initialize_const_query(memc)))
- {
- return rc;
- }
-
- size_t errors= 0;
- for (uint32_t x= 0; x < memcached_instance_list_count(memc); x++)
- {
- memcached_instance_st* instance= memcached_instance_by_position(memc, x);
-
- for (uint32_t y= 0; y < number_of_callbacks; y++)
- {
- memcached_return_t ret= (*callback[y])(memc, instance, context);
-
- if (memcached_failed(ret))
- {
- errors++;
- continue;
- }
- }
- }
-
- return errors ? MEMCACHED_SOME_ERRORS : MEMCACHED_SUCCESS;
-}
-
-memcached_return_t memcached_server_execute(memcached_st *memc,
- memcached_server_execute_fn callback,
- void *context)
-{
- if (callback == NULL)
- {
- return MEMCACHED_INVALID_ARGUMENTS;
- }
-
- bool some_errors= false;;
- for (uint32_t x= 0; x < memcached_instance_list_count(memc); x++)
- {
- memcached_instance_st* instance= memcached_instance_fetch(memc, x);
-
- memcached_return_t rc= (*callback)(memc, instance, context);
- if (rc == MEMCACHED_INVALID_ARGUMENTS)
- {
- return rc;
- }
- else if (memcached_fatal(rc))
- {
- some_errors= true;
- }
- }
-
- (void)some_errors;
- return MEMCACHED_SUCCESS;
-}
-
-const memcached_instance_st * memcached_server_by_key(memcached_st *shell,
- const char *key,
- size_t key_length,
- memcached_return_t *error)
-{
- Memcached* memc= memcached2Memcached(shell);
- memcached_return_t unused;
- if (error == NULL)
- {
- error= &unused;
- }
-
-
- memcached_return_t rc;
- if (memcached_failed(rc= initialize_const_query(memc)))
- {
- *error= rc;
- return NULL;
- }
-
- if (memcached_failed((memcached_key_test(*memc, (const char **)&key, &key_length, 1))))
- {
- *error= memcached_last_error(memc);
- return NULL;
- }
-
- uint32_t server_key= memcached_generate_hash(memc, key, key_length);
- return memcached_instance_by_position(memc, server_key);
-}
-
-/*
- If we do not have a valid object to clone from, we toss an error.
-*/
-static memcached_instance_st* memcached_instance_clone(memcached_instance_st* source)
-{
- /* We just do a normal create if source is missing */
- if (source == NULL)
- {
- return NULL;
- }
-
- memcached_string_t hostname_= { memcached_string_make_from_cstr(source->hostname()) };
- return __instance_create_with(source->root,
- NULL,
- hostname_,
- source->port(), source->weight,
- source->type);
-}
-
-void set_last_disconnected_host(memcached_instance_st* self)
-{
- assert(self->root);
- if (self->root)
- {
- if (memcached_server_get_last_disconnect(self->root) and
- memcached_server_get_last_disconnect(self->root)->version == self->version)
- {
- return;
- }
-
- // const_cast
- memcached_st *root= (memcached_st *)self->root;
-
- memcached_instance_free((memcached_instance_st*)(root->last_disconnected_server));
-
- // We set is_parsing so that no lookup happens
- root->state.is_parsing= true;
- root->last_disconnected_server= memcached_instance_clone(self);
- root->state.is_parsing= false;
-
- ((memcached_instance_st*)memcached_server_get_last_disconnect(root))->version= self->version;
- }
-}
-
-const memcached_instance_st * memcached_server_get_last_disconnect(const memcached_st *shell)
-{
- const Memcached* self= memcached2Memcached(shell);
- if (self)
- {
- return (const memcached_instance_st *)self->last_disconnected_server;
- }
-
- return 0;
-}
-
-void memcached_instance_next_retry(const memcached_instance_st * self, const time_t absolute_time)
-{
- WATCHPOINT_ASSERT(self);
- if (self)
- {
- ((memcached_instance_st*)self)->next_retry= absolute_time;
- }
-}
-
-bool memcached_instance_st::valid() const
-{
- if (fd == INVALID_SOCKET)
- {
- return false;
- }
-
- return true;
-}
-
-bool memcached_instance_st::is_shutting_down() const
-{
- return options.is_shutting_down;
-}
projects / awesomized / libmemcached / blobdiff