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  • Committer: Andrew Hutchings
  • Date: 2010-10-23 19:57:57 UTC
  • mto: This revision was merged to the branch mainline in revision 1907.
  • Revision ID: andrew@linuxjedi.co.uk-20101023195757-03jha2xobl6rn80s
Add join cache global constraint

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drizzled/join_cache.cc
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#include "config.h"
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#include "drizzled/sql_select.h" /* include join.h */
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#include "drizzled/field/blob.h"
 
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#include "drizzled/drizzled.h"
 
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#include "drizzled/internal/my_sys.h"
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#include <algorithm>
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  if (!(cache->field=(CacheField*)
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        memory::sql_alloc(sizeof(CacheField)*(cache->fields+table_count*2)+(blobs+1)* sizeof(CacheField*))))
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  {
 
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    size= max((size_t) session->variables.join_buff_size, (size_t)cache->length);
 
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    global_join_buffer.sub(size);
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    free((unsigned char*) cache->buff);
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    cache->buff=0;
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    return(1);
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  cache->blobs= blobs;
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  *blob_ptr= NULL;                                      /* End sequentel */
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  size= max((size_t) session->variables.join_buff_size, (size_t)cache->length);
 
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  if (not global_join_buffer.add(size))
 
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  {
 
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    my_error(ER_OUT_OF_GLOBAL_JOINMEMORY, MYF(ME_ERROR+ME_WAITTANG));
 
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    return 1;
 
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  }
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  if (!(cache->buff= (unsigned char*) malloc(size)))
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    return 1;
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  cache->end= cache->buff+size;