Commit d22216bc authored by serg@serg.mysql.com's avatar serg@serg.mysql.com
Browse files

myrg_rrnd.c merge+insert (alternate take) 

myrg_info.c	merge+insert (alternate take)
myrg_extra.c	merge+insert (alternate take)
mymrgdef.h	merge+insert (alternate take)
sql_base.cc	open_table --> open_or_reset_table (needed for MERGE)
parent fe85a604

myisammrg/mymrgdef.h

+3 −5
Original line number Diff line number Diff line
@@ -30,5 +30,3 @@ extern pthread_mutex_t THR_LOCK_open; 


int _myrg_init_queue(MYRG_INFO *info,int inx,enum ha_rkey_function search_flag);

int _myrg_finish_scan(MYRG_INFO *info, int inx, enum ha_rkey_function type);
 
MYRG_TABLE *_myrg_find_table(MYRG_INFO *info, ulonglong pos);

myisammrg/myrg_extra.c

+16 −4
Original line number Diff line number Diff line
@@ -26,6 +26,8 @@ int myrg_extra(MYRG_INFO *info,enum ha_extra_function function) 
{

  int error,save_error=0;

  MYRG_TABLE *file;

  DBUG_ENTER("myrg_extra");

  DBUG_PRINT("info",("function: %d",(ulong) function));



  if (function == HA_EXTRA_CACHE)

    info->cache_in_use=1;
@@ -38,9 +40,19 @@ int myrg_extra(MYRG_INFO *info,enum ha_extra_function function) 
      info->current_table=0;

      info->last_used_table=info->open_tables;

    }



    info->records=info->del=info->data_file_length=0;

    for (file=info->open_tables ; file != info->end_table ; file++)

    {

      if ((error=mi_extra(file->table,function)))

	save_error=error;

      file->file_offset=info->data_file_length;

      info->data_file_length+=file->table->s->state.state.data_file_length;

      info->records+=file->table->s->state.state.records;

      info->del+=file->table->s->state.state.del;

      DBUG_PRINT("info2",("table: %s, offset: 0x%08lx",

                  file->table->filename,(ulong)file->file_offset));

    }

  }

  return save_error;

  DBUG_RETURN(save_error);

}

myisammrg/myrg_info.c

+3 −5
Original line number Diff line number Diff line
@@ -35,8 +35,6 @@ int myrg_status(MYRG_INFO *info,register MYMERGE_INFO *x,int flag) 
  MYRG_TABLE *current_table;

  DBUG_ENTER("myrg_status");



  _myrg_find_table(info, HA_OFFSET_ERROR);



  if (!(current_table = info->current_table) &&

      info->open_tables != info->end_table)

    current_table = info->open_tables;

myisammrg/myrg_rrnd.c

+26 −19
Original line number Diff line number Diff line
@@ -21,6 +21,8 @@ 


#include "mymrgdef.h"



static MYRG_TABLE *find_table(MYRG_TABLE *start,MYRG_TABLE *end,ulonglong pos);



/*

  	If filepos == HA_OFFSET_ERROR, read next

	Returns same as mi_rrnd:
@@ -33,6 +35,8 @@ int myrg_rrnd(MYRG_INFO *info,byte *buf,ulonglong filepos) 
{

  int error;

  MI_INFO *isam_info;

  DBUG_ENTER("myrg_rrnd");

  DBUG_PRINT("info",("offset: 0x%016qx", (ulonglong)filepos));



  if (filepos == HA_OFFSET_ERROR)

  {
@@ -40,7 +44,7 @@ int myrg_rrnd(MYRG_INFO *info,byte *buf,ulonglong filepos) 
    {

      if (info->open_tables == info->end_table)

      {						/* No tables */

	return (my_errno=HA_ERR_END_OF_FILE);

	DBUG_RETURN(my_errno=HA_ERR_END_OF_FILE);

      }

      isam_info=(info->current_table=info->open_tables)->table;

      if (info->cache_in_use)
@@ -60,11 +64,11 @@ int myrg_rrnd(MYRG_INFO *info,byte *buf,ulonglong filepos) 
      if ((error=(*isam_info->s->read_rnd)(isam_info,(byte*) buf,

					   (my_off_t) filepos,1)) !=

	  HA_ERR_END_OF_FILE)

	return (error);

	DBUG_RETURN(error);

      if (info->cache_in_use)

	mi_extra(info->current_table->table,HA_EXTRA_NO_CACHE);

      if (info->current_table+1 == info->end_table)

	return(HA_ERR_END_OF_FILE);

	DBUG_RETURN(HA_ERR_END_OF_FILE);

      info->current_table++;

      info->last_used_table=info->current_table;

      if (info->cache_in_use)
@@ -78,10 +82,11 @@ int myrg_rrnd(MYRG_INFO *info,byte *buf,ulonglong filepos) 
      isam_info->lastinx= (uint) -1;

    }

  }

  info->current_table=_myrg_find_table(info,filepos);

  info->current_table=find_table(info->open_tables,

				 info->end_table-1,filepos);

  isam_info=info->current_table->table;

  isam_info->update&= HA_STATE_CHANGED;

  return ((*isam_info->s->read_rnd)

  DBUG_RETURN((*isam_info->s->read_rnd)

              (isam_info, (byte*) buf,

	      (ha_rows) (filepos - info->current_table->file_offset),

	      0));
@@ -90,19 +95,21 @@ int myrg_rrnd(MYRG_INFO *info,byte *buf,ulonglong filepos) 


	/* Find which table to use according to file-pos */



MYRG_TABLE *_myrg_find_table(MYRG_INFO *info, ulonglong pos)

static MYRG_TABLE *find_table(MYRG_TABLE *start, MYRG_TABLE *end,

			      ulonglong pos)

{

  MYRG_TABLE *t;



  info->records=info->del=info->data_file_length=0;

  MYRG_TABLE *mid;

  DBUG_ENTER("find_table");



  for (t=info->open_tables ; t < info->end_table ; t++)

  while (start != end)

  {

    t->file_offset=info->data_file_length;

    if (pos < t->file_offset) return t-1;

    info->data_file_length+=t->table->state->data_file_length;

    info->records+=t->table->state->records;

    info->del+=t->table->state->del;

    mid=start+((uint) (end-start)+1)/2;

    if (mid->file_offset > pos)

      end=mid-1;

    else

      start=mid;

  }

  return t-1;

  DBUG_PRINT("info",("offset: 0x%016qx, table: %s",

                    (ulonglong)pos, start->table->filename));

  DBUG_RETURN(start);

}

sql/sql_base.cc

+13 −12
Original line number Diff line number Diff line
@@ -740,6 +740,7 @@ TABLE *open_table(THD *thd,const char *db,const char *table_name, 
    }

    table->prev->next=table->next;		/* Remove from unused list */

    table->next->prev=table->prev;

    table->file->reset();

  }

  else

  {