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  • Committer: Andrew Hutchings
  • Date: 2010-11-09 13:38:01 UTC
  • mto: (1919.1.2 trunk)
  • mto: This revision was merged to the branch mainline in revision 1920.
  • Revision ID: andrew@linuxjedi.co.uk-20101109133801-byjzsao76346395x
Add FLUSH GLOBAL STATUS; command
Clears the global status variables for the server

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Lines of Context:
plugin/myisam/mi_extra.cc
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                                        /* Next/prev gives first/last */
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    if (info->opt_flag & READ_CACHE_USED)
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    {
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      info->rec_cache.reinit_io_cache(internal::READ_CACHE,0,
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                                      (bool) (info->lock_type != F_UNLCK),
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                                      (bool) test(info->update & HA_STATE_ROW_CHANGED));
 
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      reinit_io_cache(&info->rec_cache, internal::READ_CACHE,0,
 
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                      (bool) (info->lock_type != F_UNLCK),
 
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                      (bool) test(info->update & HA_STATE_ROW_CHANGED)
 
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                      );
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    }
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    info->update= ((info->update & HA_STATE_CHANGED) | HA_STATE_NEXT_FOUND |
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                   HA_STATE_PREV_FOUND);
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    if (info->opt_flag & WRITE_CACHE_USED)
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    {
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      info->opt_flag&= ~WRITE_CACHE_USED;
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      if ((error= info->rec_cache.end_io_cache()))
 
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      if ((error=end_io_cache(&info->rec_cache)))
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        break;
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    }
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    if (!(info->opt_flag &
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    {
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      cache_size= (extra_arg ? *(uint32_t*) extra_arg :
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                   internal::my_default_record_cache_size);
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      if (!(info->rec_cache.init_io_cache(info->dfile, (uint) min((uint32_t)info->state->data_file_length+1, cache_size),
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                                          internal::READ_CACHE,0L,(bool) (info->lock_type != F_UNLCK),
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                                          MYF(share->write_flag & MY_WAIT_IF_FULL))))
 
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      if (!(init_io_cache(&info->rec_cache,info->dfile,
 
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                         (uint) min((uint32_t)info->state->data_file_length+1,
 
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                                    cache_size),
 
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                          internal::READ_CACHE,0L,(bool) (info->lock_type != F_UNLCK),
 
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                          MYF(share->write_flag & MY_WAIT_IF_FULL))))
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      {
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        info->opt_flag|=READ_CACHE_USED;
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        info->update&= ~HA_STATE_ROW_CHANGED;
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  case HA_EXTRA_REINIT_CACHE:
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    if (info->opt_flag & READ_CACHE_USED)
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    {
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      info->rec_cache.reinit_io_cache(internal::READ_CACHE,info->nextpos,
 
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      reinit_io_cache(&info->rec_cache,internal::READ_CACHE,info->nextpos,
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                      (bool) (info->lock_type != F_UNLCK),
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                      (bool) test(info->update & HA_STATE_ROW_CHANGED));
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      info->update&= ~HA_STATE_ROW_CHANGED;
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    cache_size= (extra_arg ? *(uint32_t*) extra_arg :
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                 internal::my_default_record_cache_size);
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    if (not (info->opt_flag & (READ_CACHE_USED | WRITE_CACHE_USED | OPT_NO_ROWS)) && !share->state.header.uniques)
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    {
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      if (not (info->rec_cache.init_io_cache(info->dfile, cache_size,
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                                             internal::WRITE_CACHE,info->state->data_file_length,
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                                             (bool) (info->lock_type != F_UNLCK),
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                                             MYF(share->write_flag & MY_WAIT_IF_FULL))))
 
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    if (!(info->opt_flag &
 
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          (READ_CACHE_USED | WRITE_CACHE_USED | OPT_NO_ROWS)) &&
 
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        !share->state.header.uniques)
 
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      if (!(init_io_cache(&info->rec_cache,info->dfile, cache_size,
 
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                         internal::WRITE_CACHE,info->state->data_file_length,
 
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                          (bool) (info->lock_type != F_UNLCK),
 
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                          MYF(share->write_flag & MY_WAIT_IF_FULL))))
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      {
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        info->opt_flag|=WRITE_CACHE_USED;
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        info->update&= ~(HA_STATE_ROW_CHANGED |
 
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        info->opt_flag|=WRITE_CACHE_USED;
 
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        info->update&= ~(HA_STATE_ROW_CHANGED |
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                         HA_STATE_WRITE_AT_END |
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                         HA_STATE_EXTEND_BLOCK);
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      }
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    }
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    break;
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  case HA_EXTRA_PREPARE_FOR_UPDATE:
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    if (info->s->data_file_type != DYNAMIC_RECORD)
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    if (info->opt_flag & (READ_CACHE_USED | WRITE_CACHE_USED))
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    {
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      info->opt_flag&= ~(READ_CACHE_USED | WRITE_CACHE_USED);
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      error= info->rec_cache.end_io_cache();
 
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      error=end_io_cache(&info->rec_cache);
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      /* Sergei will insert full text index caching here */
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    }
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#if !defined(TARGET_OS_SOLARIS)
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  if (info->opt_flag & (READ_CACHE_USED | WRITE_CACHE_USED))
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  {
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    info->opt_flag&= ~(READ_CACHE_USED | WRITE_CACHE_USED);
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    error= info->rec_cache.end_io_cache();
 
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    error= end_io_cache(&info->rec_cache);
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  }
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  if (share->base.blobs)
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    mi_alloc_rec_buff(info, SIZE_MAX, &info->rec_buff);