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  • Committer: Monty Taylor
  • Date: 2010-01-02 05:11:55 UTC
  • mto: (1259.3.1 build)
  • mto: This revision was merged to the branch mainline in revision 1262.
  • Revision ID: mordred@inaugust.com-20100102051155-akdm8w5rr6xwzayu
pandora-build - proper detection of memcached.

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plugin/myisam/mi_unique.cc
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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  02110-1301  USA */
 
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   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
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/* Functions to check if a row is unique */
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#include "myisam_priv.h"
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#include "drizzled/charset_info.h"
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using namespace drizzled;
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bool mi_check_unique(MI_INFO *info,
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                     MI_UNIQUEDEF *def,
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                     unsigned char *record,
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                     internal::ha_checksum unique_hash,
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                     internal::my_off_t disk_pos)
 
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bool mi_check_unique(MI_INFO *info, MI_UNIQUEDEF *def, unsigned char *record,
 
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                        ha_checksum unique_hash, my_off_t disk_pos)
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{
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  internal::my_off_t lastpos=info->lastpos;
 
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  my_off_t lastpos=info->lastpos;
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  MI_KEYDEF *key= &info->s->keyinfo[def->key];
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  unsigned char *key_buff=info->lastkey2;
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    Add support for bit fields
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*/
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internal::ha_checksum mi_unique_hash(MI_UNIQUEDEF *def, const unsigned char *record)
 
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ha_checksum mi_unique_hash(MI_UNIQUEDEF *def, const unsigned char *record)
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{
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  const unsigned char *pos, *end;
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  internal::ha_checksum crc= 0;
 
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  ha_checksum crc= 0;
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  uint32_t seed1=0, seed2= 4;
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  HA_KEYSEG *keyseg;
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          done)
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        */
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        crc=((crc << 8) + 511+
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             (crc >> (8*sizeof(internal::ha_checksum)-8)));
 
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             (crc >> (8*sizeof(ha_checksum)-8)));
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        continue;
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      }
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    }
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      while (pos != end)
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        crc=((crc << 8) +
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             (((unsigned char)  *(unsigned char*) pos++))) +
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          (crc >> (8*sizeof(internal::ha_checksum)-8));
 
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          (crc >> (8*sizeof(ha_checksum)-8));
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  }
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  return crc;
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}