-/* -*- Mode: C; tab-width: 2; c-basic-offset: 2; indent-tabs-mode: nil -*- */
-#ifndef MEMCACHED_PROTOCOL_INTERNAL_H
-#define MEMCACHED_PROTOCOL_INTERNAL_H
-
-#include "config.h"
-#include <stdbool.h>
-#include <assert.h>
-#include <netinet/in.h>
-
-#ifdef linux
-/* /usr/include/netinet/in.h defines macros from ntohs() to _bswap_nn to
- * optimize the conversion functions, but the prototypes generate warnings
- * from gcc. The conversion methods isn't the bottleneck for my app, so
- * just remove the warnings by undef'ing the optimization ..
+/* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
+ *
+ * Libmemcached library
+ *
+ * Copyright (C) 2011 Data Differential, http://datadifferential.com/
+ *
+ * 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.
+ *
*/
-#undef ntohs
-#undef ntohl
-#undef htons
-#undef htonl
-
-#endif
+#pragma once
-/* Define this here, which will turn on the visibilty controls while we're
- * building libmemcached.
- */
-#define BUILDING_LIBMEMCACHED 1
+#include "config.h"
+#if !defined(__cplusplus)
+# include <stdbool.h>
+#endif
+#include <assert.h>
+#include <libmemcached/visibility.h>
#include <libmemcached/protocol_handler.h>
#include <libmemcached/protocol/cache.h>
-struct memcached_binary_protocol_st {
- struct memcached_binary_protocol_callback_st *callback;
- memcached_binary_protocol_recv_func recv;
- memcached_binary_protocol_send_func send;
- char *input_buffer;
+/*
+ * I don't really need the following two functions as function pointers
+ * in the instance handle, but I don't want to put them in the global
+ * namespace for those linking statically (personally I don't like that,
+ * but some people still do). If it ever shows up as a performance thing
+ * I'll look into optimizing this ;-)
+ */
+typedef bool (*drain_func)(memcached_protocol_client_st *client);
+typedef protocol_binary_response_status (*spool_func)(memcached_protocol_client_st *client,
+ const void *data,
+ size_t length);
+
+/**
+ * Definition of the per instance structure.
+ */
+struct memcached_protocol_st {
+ memcached_binary_protocol_callback_st *callback;
+ memcached_protocol_recv_func recv;
+ memcached_protocol_send_func send;
+
+ /*
+ * I really don't need these as funciton pointers, but I don't want
+ * to clutter the namespace if someone links statically.
+ */
+ drain_func drain;
+ spool_func spool;
+
+ /*
+ * To avoid keeping a buffer in each client all the time I have a
+ * bigger buffer in the instance that I read to initially, and then
+ * I try to parse and execute as much from the buffer. If I wasn't able
+ * to process all data I'll keep that in a per-connection buffer until
+ * the next time I can read from the socket.
+ */
+ uint8_t *input_buffer;
size_t input_buffer_size;
+
bool pedantic;
/* @todo use multiple sized buffers */
cache_t *buffer_cache;
};
-
struct chunk_st {
/* Pointer to the data */
char *data;
#define CHUNK_BUFFERSIZE 2048
-struct memcached_binary_protocol_client_st {
- struct memcached_binary_protocol_st *root;
- int sock;
+typedef memcached_protocol_event_t (*process_data)(struct memcached_protocol_client_st *client, ssize_t *length, void **endptr);
+
+enum ascii_cmd {
+ GET_CMD,
+ GETS_CMD,
+ SET_CMD,
+ ADD_CMD,
+ REPLACE_CMD,
+ CAS_CMD,
+ APPEND_CMD,
+ PREPEND_CMD,
+ DELETE_CMD,
+ INCR_CMD,
+ DECR_CMD,
+ STATS_CMD,
+ FLUSH_ALL_CMD,
+ VERSION_CMD,
+ QUIT_CMD,
+ VERBOSITY_CMD,
+ UNKNOWN_CMD
+};
+
+struct memcached_protocol_client_st {
+ memcached_protocol_st *root;
+ memcached_socket_t sock;
int error;
/* Linked list of data to send */
struct chunk_st *output;
struct chunk_st *output_tail;
-
-
- char *input_buffer;
+ /*
+ * While we process input data, this is where we spool incomplete commands
+ * if we need to receive more data....
+ * @todo use the buffercace
+ */
+ uint8_t *input_buffer;
size_t input_buffer_size;
size_t input_buffer_offset;
- char *curr_input;
+ /* The callback to the protocol handler to use (ascii or binary) */
+ process_data work;
- struct chunk_st *input;
- /* Pointer to the last chunk to avoid the need to traverse the complete list */
- struct chunk_st *input_tail;
- size_t bytes_available;
+ /*
+ * Should the spool data discard the data to send or not? (aka noreply in
+ * the ascii protocol..
+ */
+ bool mute;
+ /* Members used by the binary protocol */
protocol_binary_request_header *current_command;
- bool quiet;
-};
-
-LIBMEMCACHED_LOCAL
-bool memcached_binary_protocol_pedantic_check_request(protocol_binary_request_header *request);
-
-LIBMEMCACHED_LOCAL
-bool memcached_binary_protocol_pedantic_check_response(protocol_binary_request_header *request,
- protocol_binary_response_header *response);
+ /* Members used by the ascii protocol */
+ enum ascii_cmd ascii_command;
+};
-#endif
+#include "ascii_handler.h"
+#include "binary_handler.h"
projects / m6w6 / libmemcached / blobdiff