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/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
class Querycache_stream
{
byte *cur_data;
byte *data_end;
Query_cache_block *block;
uint headers_len;
public:
#ifndef DBUG_OFF
uint stored_size;
#endif
Querycache_stream(Query_cache_block *ini_block, uint ini_headers_len) :
block(ini_block), headers_len(ini_headers_len)
{
use_next_block();
#ifndef DBUG_OFF
stored_size= 0;
#endif
}
void use_next_block()
{
cur_data= ((byte*)block)+headers_len;
data_end= cur_data + (block->used-headers_len);
}
void store_char(char c);
void store_short(ushort s);
void store_int(uint i);
void store_ll(ulonglong ll);
void store_str_only(const char *str, uint str_len);
void store_str(const char *str, uint str_len);
void store_safe_str(const char *str, uint str_len);
char load_char();
ushort load_short();
uint load_int();
ulonglong load_ll();
void load_str_only(char *buffer, uint str_len);
char *load_str(MEM_ROOT *alloc, uint *str_len);
int load_safe_str(MEM_ROOT *alloc, char **str, uint *str_len);
int load_column(MEM_ROOT *alloc, char **column);
};
uint emb_count_querycache_size(THD *thd);
int emb_load_querycache_result(THD *thd, Querycache_stream *src);
void emb_store_querycache_result(Querycache_stream *dst, THD* thd);
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