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61 lines
2 KiB
C++
61 lines
2 KiB
C++
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
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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; either version 2 of the License, or
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(at your option) any later version.
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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class Querycache_stream
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{
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byte *cur_data;
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byte *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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#ifndef DBUG_OFF
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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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use_next_block();
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#ifndef DBUG_OFF
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stored_size= 0;
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#endif
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}
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void use_next_block()
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{
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cur_data= ((byte*)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_char(char 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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char load_char();
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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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