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b01c426146
Protocol_local fixed so it can be used now. Some Protocol:: methods made virtual so they can adapt. as well as net_ok and net_send_error functions. execute_sql_string function is exported to the plugins. To be changed with the mysql_use_result.
83 lines
2.8 KiB
C++
83 lines
2.8 KiB
C++
/* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
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#include "sql_cache.h" /* Query_cache_block */
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class Querycache_stream
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{
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uchar *cur_data;
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uchar *data_end;
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Query_cache_block *block;
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uint headers_len;
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public:
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#ifdef DBUG_ASSERT_EXISTS
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Query_cache_block *first_block;
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uint stored_size;
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#endif
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Querycache_stream(Query_cache_block *ini_block, uint ini_headers_len) :
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block(ini_block), headers_len(ini_headers_len)
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{
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cur_data= ((uchar*)block)+headers_len;
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data_end= cur_data + (block->used-headers_len);
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#ifdef DBUG_ASSERT_EXISTS
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first_block= ini_block;
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stored_size= 0;
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#endif
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}
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void use_next_block(bool writing)
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{
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/*
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This shouldn't be called if there is only one block, or to loop
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around to the first block again. That means we're trying to write
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more data than we allocated space for.
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*/
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DBUG_ASSERT(block->next != block);
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DBUG_ASSERT(block->next != first_block);
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block= block->next;
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/*
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While writing, update the type of each block as we write to it.
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While reading, make sure that the block is of the expected type.
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*/
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if (writing)
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block->type= Query_cache_block::RES_CONT;
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else
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DBUG_ASSERT(block->type == Query_cache_block::RES_CONT);
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cur_data= ((uchar*)block)+headers_len;
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data_end= cur_data + (block->used-headers_len);
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}
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void store_uchar(uchar c);
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void store_short(ushort s);
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void store_int(uint i);
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void store_ll(ulonglong ll);
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void store_str_only(const char *str, uint str_len);
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void store_str(const char *str, uint str_len);
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void store_safe_str(const char *str, uint str_len);
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uchar load_uchar();
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ushort load_short();
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uint load_int();
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ulonglong load_ll();
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void load_str_only(char *buffer, uint str_len);
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char *load_str(MEM_ROOT *alloc, uint *str_len);
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int load_safe_str(MEM_ROOT *alloc, char **str, uint *str_len);
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int load_column(MEM_ROOT *alloc, char **column);
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};
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uint emb_count_querycache_size(THD *thd);
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int emb_load_querycache_result(THD *thd, Querycache_stream *src);
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void emb_store_querycache_result(Querycache_stream *dst, THD* thd);
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