mariadb/myisam/mi_test2.c

/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

/* Test av isam-databas: stor test */

#ifndef USE_MY_FUNC		/* We want to be able to dbug this !! */
#define USE_MY_FUNC
#endif
#ifdef DBUG_OFF
#undef DBUG_OFF
#endif
#ifndef SAFEMALLOC
#define SAFEMALLOC
#endif
#include "myisamdef.h"
#include <m_ctype.h>

#define STANDARD_LENGTH 37
#define MYISAM_KEYS 6
#define MAX_PARTS 4
#if !defined(MSDOS) && !defined(labs)
#define labs(a) abs(a)
#endif

static void get_options(int argc, char *argv[]);
static uint rnd(uint max_value);
static void fix_length(byte *record,uint length);
static void put_blob_in_record(char *blob_pos,char **blob_buffer);
static void copy_key(struct st_myisam_info *info,uint inx,
		     uchar *record,uchar *key);

static	int verbose=0,testflag=0,
	    first_key=0,async_io=0,key_cacheing=0,write_cacheing=0,locking=0,
            rec_pointer_size=0,pack_fields=1,use_log=0,silent=0,
            opt_quick_mode=0;
static int pack_seg=HA_SPACE_PACK,pack_type=HA_PACK_KEY,remove_count=-1,
	   create_flag=0;
static ulong key_cache_size=IO_SIZE*16;

static uint keys=MYISAM_KEYS,recant=1000;
static uint use_blob=0;
static uint16 key1[1001],key3[5000];
static char record[300],record2[300],key[100],key2[100],
	    read_record[300],read_record2[300],read_record3[300];
static HA_KEYSEG glob_keyseg[MYISAM_KEYS][MAX_PARTS];

		/* Test program */

int main(int argc, char *argv[])
{
  uint i;
  int j,n1,n2,n3,error,k;
  uint write_count,update,dupp_keys,opt_delete,start,length,blob_pos,
       reclength,ant,found_parts;
  my_off_t lastpos;
  ha_rows range_records,records;
  MI_INFO *file;
  MI_KEYDEF keyinfo[10];
  MI_COLUMNDEF recinfo[10];
  MI_ISAMINFO info;
  const char *filename;
  char *blob_buffer;
  MI_CREATE_INFO create_info;
  MY_INIT(argv[0]);

  filename= "test2";
  get_options(argc,argv);
  if (! async_io)
    my_disable_async_io=1;

  reclength=STANDARD_LENGTH+60+(use_blob ? 8 : 0);
  blob_pos=STANDARD_LENGTH+60;
  keyinfo[0].seg= &glob_keyseg[0][0];
  keyinfo[0].seg[0].start=0;
  keyinfo[0].seg[0].length=6;
  keyinfo[0].seg[0].type=HA_KEYTYPE_TEXT;
  keyinfo[0].seg[0].language=MY_CHARSET_CURRENT;
  keyinfo[0].seg[0].flag=(uint8) pack_seg;
  keyinfo[0].seg[0].null_bit=0;
  keyinfo[0].seg[0].null_pos=0;
  keyinfo[0].key_alg=HA_KEY_ALG_BTREE;
  keyinfo[0].keysegs=1;
  keyinfo[0].flag = pack_type;
  keyinfo[1].seg= &glob_keyseg[1][0];
  keyinfo[1].seg[0].start=7;
  keyinfo[1].seg[0].length=6;
  keyinfo[1].seg[0].type=HA_KEYTYPE_BINARY;
  keyinfo[1].seg[0].flag=0;
  keyinfo[1].seg[0].null_bit=0;
  keyinfo[1].seg[0].null_pos=0;
  keyinfo[1].seg[1].start=0;			/* two part key */
  keyinfo[1].seg[1].length=6;
  keyinfo[1].seg[1].type=HA_KEYTYPE_NUM;
  keyinfo[1].seg[1].flag=HA_REVERSE_SORT;
  keyinfo[1].seg[1].null_bit=0;
  keyinfo[1].seg[1].null_pos=0;
  keyinfo[1].key_alg=HA_KEY_ALG_BTREE;
  keyinfo[1].keysegs=2;
  keyinfo[1].flag =0;
  keyinfo[2].seg= &glob_keyseg[2][0];
  keyinfo[2].seg[0].start=12;
  keyinfo[2].seg[0].length=8;
  keyinfo[2].seg[0].type=HA_KEYTYPE_BINARY;
  keyinfo[2].seg[0].flag=HA_REVERSE_SORT;
  keyinfo[2].seg[0].null_bit=0;
  keyinfo[2].seg[0].null_pos=0;
  keyinfo[2].key_alg=HA_KEY_ALG_BTREE;
  keyinfo[2].keysegs=1;
  keyinfo[2].flag =HA_NOSAME;
  keyinfo[3].seg= &glob_keyseg[3][0];
  keyinfo[3].seg[0].start=0;
  keyinfo[3].seg[0].length=reclength-(use_blob ? 8 : 0);
  keyinfo[3].seg[0].type=HA_KEYTYPE_TEXT;
  keyinfo[3].seg[0].language=MY_CHARSET_CURRENT;
  keyinfo[3].seg[0].flag=(uint8) pack_seg;
  keyinfo[3].seg[0].null_bit=0;
  keyinfo[3].seg[0].null_pos=0;
  keyinfo[3].key_alg=HA_KEY_ALG_BTREE;
  keyinfo[3].keysegs=1;
  keyinfo[3].flag = pack_type;
  keyinfo[4].seg= &glob_keyseg[4][0];
  keyinfo[4].seg[0].start=0;
  keyinfo[4].seg[0].length=5;
  keyinfo[4].seg[0].type=HA_KEYTYPE_TEXT;
  keyinfo[4].seg[0].language=MY_CHARSET_CURRENT;
  keyinfo[4].seg[0].flag=0;
  keyinfo[4].seg[0].null_bit=0;
  keyinfo[4].seg[0].null_pos=0;
  keyinfo[4].key_alg=HA_KEY_ALG_BTREE;
  keyinfo[4].keysegs=1;
  keyinfo[4].flag = pack_type;
  keyinfo[5].seg= &glob_keyseg[5][0];
  keyinfo[5].seg[0].start=0;
  keyinfo[5].seg[0].length=4;
  keyinfo[5].seg[0].type=HA_KEYTYPE_TEXT;
  keyinfo[5].seg[0].language=MY_CHARSET_CURRENT;
  keyinfo[5].seg[0].flag=pack_seg;
  keyinfo[5].seg[0].null_bit=0;
  keyinfo[5].seg[0].null_pos=0;
  keyinfo[5].key_alg=HA_KEY_ALG_BTREE;
  keyinfo[5].keysegs=1;
  keyinfo[5].flag = pack_type;

  recinfo[0].type=pack_fields ? FIELD_SKIP_PRESPACE : 0;
  recinfo[0].length=7;
  recinfo[0].null_bit=0;
  recinfo[0].null_pos=0;
  recinfo[1].type=pack_fields ? FIELD_SKIP_PRESPACE : 0;
  recinfo[1].length=5;
  recinfo[1].null_bit=0;
  recinfo[1].null_pos=0;
  recinfo[2].type=pack_fields ? FIELD_SKIP_PRESPACE : 0;
  recinfo[2].length=9;
  recinfo[2].null_bit=0;
  recinfo[2].null_pos=0;
  recinfo[3].type=FIELD_NORMAL;
  recinfo[3].length=STANDARD_LENGTH-7-5-9-4;
  recinfo[3].null_bit=0;
  recinfo[3].null_pos=0;
  recinfo[4].type=pack_fields ? FIELD_SKIP_ZERO : 0;
  recinfo[4].length=4;
  recinfo[4].null_bit=0;
  recinfo[4].null_pos=0;
  recinfo[5].type=pack_fields ? FIELD_SKIP_ENDSPACE : 0;
  recinfo[5].length=60;
  recinfo[5].null_bit=0;
  recinfo[5].null_pos=0;
  if (use_blob)
  {
    recinfo[6].type=FIELD_BLOB;
    recinfo[6].length=4+mi_portable_sizeof_char_ptr;
    recinfo[6].null_bit=0;
    recinfo[6].null_pos=0;
  }

  write_count=update=dupp_keys=opt_delete=0;
  blob_buffer=0;

  for (i=1000 ; i>0 ; i--) key1[i]=0;
  for (i=4999 ; i>0 ; i--) key3[i]=0;

  if (!silent)
    printf("- Creating isam-file\n");
  /*  DBUG_PUSH(""); */
  /* my_delete(filename,MYF(0)); */	/* Remove old locks under gdb */
  file= 0;
  bzero((char*) &create_info,sizeof(create_info));
  create_info.max_rows=(ha_rows) (rec_pointer_size ?
				  (1L << (rec_pointer_size*8))/
				  reclength : 0);
  create_info.reloc_rows=(ha_rows) 100;
  if (mi_create(filename,keys,&keyinfo[first_key],
		use_blob ? 7 : 6, &recinfo[0],
		0,(MI_UNIQUEDEF*) 0,
		&create_info,create_flag))
    goto err;
  if (use_log)
    mi_log(1);
  if (!(file=mi_open(filename,2,HA_OPEN_ABORT_IF_LOCKED)))
    goto err;
  if (!silent)
    printf("- Writing key:s\n");
  if (key_cacheing)
    init_key_cache(key_cache_size);		/* Use a small cache */
  if (locking)
    mi_lock_database(file,F_WRLCK);
  if (write_cacheing)
    mi_extra(file,HA_EXTRA_WRITE_CACHE,0);
  if (opt_quick_mode)
    mi_extra(file,HA_EXTRA_QUICK,0);

  for (i=0 ; i < recant ; i++)
  {
    n1=rnd(1000); n2=rnd(100); n3=rnd(5000);
    sprintf(record,"%6d:%4d:%8d:Pos: %4d    ",n1,n2,n3,write_count);
    int4store(record+STANDARD_LENGTH-4,(long) i);
    fix_length(record,(uint) STANDARD_LENGTH+rnd(60));
    put_blob_in_record(record+blob_pos,&blob_buffer);
    DBUG_PRINT("test",("record: %d",i));

    if (mi_write(file,record))
    {
      if (my_errno != HA_ERR_FOUND_DUPP_KEY || key3[n3] == 0)
      {
	printf("Error: %d in write at record: %d\n",my_errno,i);
	goto err;
      }
      if (verbose) printf("   Double key: %d\n",n3);
    }
    else
    {
      if (key3[n3] == 1 && first_key <3 && first_key+keys >= 3)
      {
	printf("Error: Didn't get error when writing second key: '%8d'\n",n3);
	goto err;
      }
      write_count++; key1[n1]++; key3[n3]=1;
    }

    /* Check if we can find key without flushing database */
    if (i == recant/2)
    {
      for (j=rnd(1000)+1 ; j>0 && key1[j] == 0 ; j--) ;
      if (!j)
	for (j=999 ; j>0 && key1[j] == 0 ; j--) ;
      sprintf(key,"%6d",j);
      if (mi_rkey(file,read_record,0,key,0,HA_READ_KEY_EXACT))
      {
	printf("Test in loop: Can't find key: \"%s\"\n",key);
	goto err;
      }
    }
  }
  if (testflag==1) goto end;

  if (write_cacheing)
  {
    if (mi_extra(file,HA_EXTRA_NO_CACHE,0))
    {
      puts("got error from mi_extra(HA_EXTRA_NO_CACHE)");
      goto end;
    }
    if (key_cacheing)
      resize_key_cache(key_cache_size*2);
  }

  if (!silent)
    printf("- Delete\n");
  for (i=0 ; i<recant/10 ; i++)
  {
    for (j=rnd(1000)+1 ; j>0 && key1[j] == 0 ; j--) ;
    if (j != 0)
    {
      sprintf(key,"%6d",j);
      if (mi_rkey(file,read_record,0,key,0,HA_READ_KEY_EXACT))
      {
	printf("can't find key1: \"%s\"\n",key);
	goto err;
      }
      if (opt_delete == (uint) remove_count)		/* While testing */
	goto end;
      if (mi_delete(file,read_record))
      {
	printf("error: %d; can't delete record: \"%s\"\n", my_errno,read_record);
	goto err;
      }
      opt_delete++;
      key1[atoi(read_record+keyinfo[0].seg[0].start)]--;
      key3[atoi(read_record+keyinfo[2].seg[0].start)]=0;
    }
    else
      puts("Warning: Skipping delete test because no dupplicate keys");
  }
  if (testflag==2) goto end;

  if (!silent)
    printf("- Update\n");
  for (i=0 ; i<recant/10 ; i++)
  {
    n1=rnd(1000); n2=rnd(100); n3=rnd(5000);
    sprintf(record2,"%6d:%4d:%8d:XXX: %4d     ",n1,n2,n3,update);
    int4store(record2+STANDARD_LENGTH-4,(long) i);
    fix_length(record2,(uint) STANDARD_LENGTH+rnd(60));

    for (j=rnd(1000)+1 ; j>0 && key1[j] == 0 ; j--) ;
    if (j != 0)
    {
      sprintf(key,"%6d",j);
      if (mi_rkey(file,read_record,0,key,0,HA_READ_KEY_EXACT))
      {
	printf("can't find key1: \"%s\"\n",key);
	goto err;
      }
      if (use_blob)
      {
	if (i & 1)
	  put_blob_in_record(record+blob_pos,&blob_buffer);
	else
	  bmove(record+blob_pos,read_record+blob_pos,8);
      }
      if (mi_update(file,read_record,record2))
      {
	if (my_errno != HA_ERR_FOUND_DUPP_KEY || key3[n3] == 0)
	{
	  printf("error: %d; can't uppdate:\nFrom: \"%s\"\nTo:   \"%s\"\n",
		 my_errno,read_record,record2);
	  goto err;
	}
	if (verbose)
	  printf("Double key when tryed to uppdate:\nFrom: \"%s\"\nTo:   \"%s\"\n",record,record2);
      }
      else
      {
	key1[atoi(read_record+keyinfo[0].seg[0].start)]--;
	key3[atoi(read_record+keyinfo[2].seg[0].start)]=0;
	key1[n1]++; key3[n3]=1;
	update++;
      }
    }
  }
  if (testflag == 3)
    goto end;

  for (i=999, dupp_keys=j=0 ; i>0 ; i--)
  {
    if (key1[i] > dupp_keys)
    {
      dupp_keys=key1[i]; j=i;
    }
  }
  sprintf(key,"%6d",j);
  start=keyinfo[0].seg[0].start;
  length=keyinfo[0].seg[0].length;
  if (dupp_keys)
  {
    if (!silent)
      printf("- Same key: first - next -> last - prev -> first\n");
    DBUG_PRINT("progpos",("first - next -> last - prev -> first"));
    if (verbose) printf("	 Using key: \"%s\"  Keys: %d\n",key,dupp_keys);

    if (mi_rkey(file,read_record,0,key,0,HA_READ_KEY_EXACT))
      goto err;
    if (mi_rsame(file,read_record2,-1))
      goto err;
    if (memcmp(read_record,read_record2,reclength) != 0)
    {
      printf("mi_rsame didn't find same record\n");
      goto end;
    }
    info.recpos=mi_position(file);
    if (mi_rfirst(file,read_record2,0) ||
	mi_rsame_with_pos(file,read_record2,0,info.recpos) ||
	memcmp(read_record,read_record2,reclength) != 0)
    {
      printf("mi_rsame_with_pos didn't find same record\n");
      goto end;
    }
    {
      int skr=mi_rnext(file,read_record2,0);
      if ((skr && my_errno != HA_ERR_END_OF_FILE) ||
	  mi_rprev(file,read_record2,-1) ||
	  memcmp(read_record,read_record2,reclength) != 0)
      {
	printf("mi_rsame_with_pos lost position\n");
	goto end;
      }
    }
    ant=1;
    while (mi_rnext(file,read_record2,0) == 0 &&
	   memcmp(read_record2+start,key,length) == 0) ant++;
    if (ant != dupp_keys)
    {
      printf("next: Found: %d keys of %d\n",ant,dupp_keys);
      goto end;
    }
    ant=0;
    while (mi_rprev(file,read_record3,0) == 0 &&
	   bcmp(read_record3+start,key,length) == 0) ant++;
    if (ant != dupp_keys)
    {
      printf("prev: Found: %d records of %d\n",ant,dupp_keys);
      goto end;
    }

    /* Check of mi_rnext_same */
    if (mi_rkey(file,read_record,0,key,0,HA_READ_KEY_EXACT))
      goto err;
    ant=1;
    while (!mi_rnext_same(file,read_record3) && ant < dupp_keys+10)
      ant++;
    if (ant != dupp_keys || my_errno != HA_ERR_END_OF_FILE)
    {
      printf("mi_rnext_same: Found: %d records of %d\n",ant,dupp_keys);
      goto end;
    }
  }

  if (!silent)
    printf("- All keys: first - next -> last - prev -> first\n");
  DBUG_PRINT("progpos",("All keys: first - next -> last - prev -> first"));
  ant=1;
  if (mi_rfirst(file,read_record,0))
  {
    printf("Can't find first record\n");
    goto end;
  }
  while ((error=mi_rnext(file,read_record3,0)) == 0 && ant < write_count+10)
    ant++;
  if (ant != write_count - opt_delete || error != HA_ERR_END_OF_FILE)
  {
    printf("next: I found: %d records of %d (error: %d)\n",
	   ant, write_count - opt_delete, error);
    goto end;
  }
  if (mi_rlast(file,read_record2,0) ||
      bcmp(read_record2,read_record3,reclength))
  {
    printf("Can't find last record\n");
    DBUG_DUMP("record2",(byte*) read_record2,reclength);
    DBUG_DUMP("record3",(byte*) read_record3,reclength);
    goto end;
  }
  ant=1;
  while (mi_rprev(file,read_record3,0) == 0 && ant < write_count+10)
    ant++;
  if (ant != write_count - opt_delete)
  {
    printf("prev: I found: %d records of %d\n",ant,write_count);
    goto end;
  }
  if (bcmp(read_record,read_record3,reclength))
  {
    printf("Can't find first record\n");
    goto end;
  }

  if (!silent)
    printf("- Test if: Read first - next - prev - prev - next == first\n");
  DBUG_PRINT("progpos",("- Read first - next - prev - prev - next == first"));
  if (mi_rfirst(file,read_record,0) ||
      mi_rnext(file,read_record3,0) ||
      mi_rprev(file,read_record3,0) ||
      mi_rprev(file,read_record3,0) == 0 ||
      mi_rnext(file,read_record3,0))
      goto err;
  if (bcmp(read_record,read_record3,reclength) != 0)
     printf("Can't find first record\n");

  if (!silent)
    printf("- Test if: Read last - prev - next - next - prev == last\n");
  DBUG_PRINT("progpos",("Read last - prev - next - next - prev == last"));
  if (mi_rlast(file,read_record2,0) ||
      mi_rprev(file,read_record3,0) ||
      mi_rnext(file,read_record3,0) ||
      mi_rnext(file,read_record3,0) == 0 ||
      mi_rprev(file,read_record3,0))
      goto err;
  if (bcmp(read_record2,read_record3,reclength))
     printf("Can't find last record\n");

  if (!silent)
    puts("- Test read key-part");
  strmov(key2,key);
  for(i=strlen(key2) ; i-- > 1 ;)
  {
    key2[i]=0;

    /* The following row is just to catch some bugs in the key code */
    bzero((char*) file->lastkey,file->s->base.max_key_length*2);
    if (mi_rkey(file,read_record,0,key2,(uint) i,HA_READ_PREFIX))
      goto err;
    if (bcmp(read_record+start,key,(uint) i))
    {
      puts("Didn't find right record");
      goto end;
    }
  }
  if (dupp_keys > 2)
  {
    if (!silent)
      printf("- Read key (first) - next - delete - next -> last\n");
    DBUG_PRINT("progpos",("first - next - delete - next -> last"));
    if (mi_rkey(file,read_record,0,key,0,HA_READ_KEY_EXACT)) goto err;
    if (mi_rnext(file,read_record3,0)) goto err;
    if (mi_delete(file,read_record3)) goto err;
    opt_delete++;
    ant=1;
    while (mi_rnext(file,read_record3,0) == 0 &&
	   bcmp(read_record3+start,key,length) == 0) ant++;
    if (ant != dupp_keys-1)
    {
      printf("next: I can only find: %d keys of %d\n",ant,dupp_keys-1);
      goto end;
    }
  }
  if (dupp_keys>4)
  {
    if (!silent)
      printf("- Read last of key - prev - delete - prev -> first\n");
    DBUG_PRINT("progpos",("last - prev - delete - prev -> first"));
    if (mi_rprev(file,read_record3,0)) goto err;
    if (mi_rprev(file,read_record3,0)) goto err;
    if (mi_delete(file,read_record3)) goto err;
    opt_delete++;
    ant=1;
    while (mi_rprev(file,read_record3,0) == 0 &&
	   bcmp(read_record3+start,key,length) == 0) ant++;
    if (ant != dupp_keys-2)
    {
      printf("next: I can only find: %d keys of %d\n",ant,dupp_keys-2);
      goto end;
    }
  }
  if (dupp_keys > 6)
  {
    if (!silent)
      printf("- Read first - delete - next -> last\n");
    DBUG_PRINT("progpos",("first - delete - next -> last"));
    if (mi_rkey(file,read_record3,0,key,0,HA_READ_KEY_EXACT)) goto err;
    if (mi_delete(file,read_record3)) goto err;
    opt_delete++;
    ant=1;
    if (mi_rnext(file,read_record,0))
      goto err;					/* Skall finnas poster */
    while (mi_rnext(file,read_record3,0) == 0 &&
	   bcmp(read_record3+start,key,length) == 0) ant++;
    if (ant != dupp_keys-3)
    {
      printf("next: I can only find: %d keys of %d\n",ant,dupp_keys-3);
      goto end;
    }

    if (!silent)
      printf("- Read last - delete - prev -> first\n");
    DBUG_PRINT("progpos",("last - delete - prev -> first"));
    if (mi_rprev(file,read_record3,0)) goto err;
    if (mi_delete(file,read_record3)) goto err;
    opt_delete++;
    ant=0;
    while (mi_rprev(file,read_record3,0) == 0 &&
	   bcmp(read_record3+start,key,length) == 0) ant++;
    if (ant != dupp_keys-4)
    {
      printf("next: I can only find: %d keys of %d\n",ant,dupp_keys-4);
      goto end;
    }
  }

  if (!silent)
    puts("- Test if: Read rrnd - same");
  DBUG_PRINT("progpos",("Read rrnd - same"));
  for (i=0 ; i < write_count ; i++)
  {
    if (mi_rrnd(file,read_record,i == 0 ? 0L : HA_OFFSET_ERROR) == 0)
      break;
  }
  if (i == write_count)
    goto err;

  bmove(read_record2,read_record,reclength);
  for (i=min(2,keys) ; i-- > 0 ;)
  {
    if (mi_rsame(file,read_record2,(int) i)) goto err;
    if (bcmp(read_record,read_record2,reclength) != 0)
    {
      printf("is_rsame didn't find same record\n");
      goto end;
    }
  }
  if (!silent)
    puts("- Test mi_records_in_range");
  mi_status(file,&info,HA_STATUS_VARIABLE);
  for (i=0 ; i < info.keys ; i++)
  {
    if (mi_rfirst(file,read_record,(int) i) ||
	mi_rlast(file,read_record2,(int) i))
      goto err;
    copy_key(file,(uint) i,(uchar*) read_record,(uchar*) key);
    copy_key(file,(uint) i,(uchar*) read_record2,(uchar*) key2);
    range_records=mi_records_in_range(file,(int) i,key,0,HA_READ_KEY_EXACT,
				      key2,0,HA_READ_AFTER_KEY);
    if (range_records < info.records*8/10 ||
	range_records > info.records*12/10)
    {
      printf("mi_records_range returned %ld; Should be about %ld\n",
	     (long) range_records,(long) info.records);
      goto end;
    }
    if (verbose)
    {
      printf("mi_records_range returned %ld;  Exact is %ld  (diff: %4.2g %%)\n",
	     (long) range_records, (long) info.records,
	     labs((long) range_records - (long) info.records)*100.0/
	     info.records);
    }
  }
  for (i=0 ; i < 5 ; i++)
  {
    for (j=rnd(1000)+1 ; j>0 && key1[j] == 0 ; j--) ;
    for (k=rnd(1000)+1 ; k>0 && key1[k] == 0 ; k--) ;
    if (j != 0 && k != 0)
    {
      if (j > k)
	swap(int,j,k);
      sprintf(key,"%6d",j);
      sprintf(key2,"%6d",k);
      range_records=mi_records_in_range(file,0,key,0,HA_READ_AFTER_KEY,
					key2,0,HA_READ_BEFORE_KEY);
      records=0;
      for (j++ ; j < k ; j++)
	records+=key1[j];
      if ((long) range_records < (long) records*7/10-2 ||
	  (long) range_records > (long) records*14/10+2)
      {
	printf("mi_records_range for key: %d returned %ld; Should be about %ld\n",
	       i, range_records, records);
	goto end;
      }
      if (verbose && records)
      {
	printf("mi_records_range returned %ld;  Exact is %ld  (diff: %4.2g %%)\n",
	       range_records,records,
	       labs((long) range_records-(long) records)*100.0/records);

      }
    }
    }

  if (!silent)
    printf("- mi_info\n");
  mi_status(file,&info,HA_STATUS_VARIABLE | HA_STATUS_CONST);
  if (info.records != write_count-opt_delete || info.deleted > opt_delete + update
      || info.keys != keys)
  {
    puts("Wrong info from mi_info");
    printf("Got: records: %ld  delete: %ld  i_keys: %d\n",
	   info.records,info.deleted,info.keys);
  }
  if (verbose)
  {
    char buff[80];
    get_date(buff,3,info.create_time);
    printf("info: Created %s\n",buff);
    get_date(buff,3,info.check_time);
    printf("info: checked %s\n",buff);
    get_date(buff,3,info.update_time);
    printf("info: Modified %s\n",buff);
  }

  mi_panic(HA_PANIC_WRITE);
  mi_panic(HA_PANIC_READ);
  if (mi_is_changed(file))
    puts("Warning: mi_is_changed reported that datafile was changed");

  if (!silent)
    printf("- mi_extra(CACHE) + mi_rrnd.... + mi_extra(NO_CACHE)\n");
  if (mi_extra(file,HA_EXTRA_RESET,0) || mi_extra(file,HA_EXTRA_CACHE,0))
  {
    if (locking || (!use_blob && !pack_fields))
    {
      puts("got error from mi_extra(HA_EXTRA_CACHE)");
      goto end;
    }
  }
  ant=0;
  while ((error=mi_rrnd(file,record,HA_OFFSET_ERROR)) != HA_ERR_END_OF_FILE &&
	 ant < write_count + 10)
	ant+= error ? 0 : 1;
  if (ant != write_count-opt_delete)
  {
    printf("rrnd with cache: I can only find: %d records of %d\n",
	   ant,write_count-opt_delete);
    goto end;
  }
  if (mi_extra(file,HA_EXTRA_NO_CACHE,0))
  {
    puts("got error from mi_extra(HA_EXTRA_NO_CACHE)");
    goto end;
  }

  ant=0;
  mi_scan_init(file);
  while ((error=mi_scan(file,record)) != HA_ERR_END_OF_FILE &&
	 ant < write_count + 10)
	ant+= error ? 0 : 1;
  if (ant != write_count-opt_delete)
  {
    printf("scan with cache: I can only find: %d records of %d\n",
	   ant,write_count-opt_delete);
    goto end;
  }

  if (testflag == 4) goto end;

  if (!silent)
    printf("- Removing keys\n");
  DBUG_PRINT("progpos",("Removing keys"));
  lastpos = HA_OFFSET_ERROR;
  /* DBUG_POP(); */
  mi_extra(file,HA_EXTRA_RESET,0);
  found_parts=0;
  while ((error=mi_rrnd(file,read_record,HA_OFFSET_ERROR)) !=
	 HA_ERR_END_OF_FILE)
  {
    info.recpos=mi_position(file);
    if (lastpos >= info.recpos && lastpos != HA_OFFSET_ERROR)
    {
      printf("mi_rrnd didn't advance filepointer; old: %ld, new: %ld\n",
	     (long) lastpos, (long) info.recpos);
      goto err;
    }
    lastpos=info.recpos;
    if (error == 0)
    {
      if (opt_delete == (uint) remove_count)		/* While testing */
	goto end;
      if (mi_rsame(file,read_record,-1))
      {
	printf("can't find record %lx\n",(long) info.recpos);
	goto err;
      }
      if (use_blob)
      {
	ulong blob_length,pos;
	uchar *ptr;
	longget(blob_length,read_record+blob_pos+4);
	ptr=(uchar*) blob_length;
	longget(blob_length,read_record+blob_pos);
	for (pos=0 ; pos < blob_length ; pos++)
	{
	  if (ptr[pos] != (uchar) (blob_length+pos))
	  {
	    printf("found blob with wrong info at %ld\n",(long) lastpos);
	    use_blob=0;
	    break;
	  }
	}
      }
      if (mi_delete(file,read_record))
      {
	printf("can't delete record: %6.6s,  delete_count: %d\n",
	       read_record, opt_delete);
	goto err;
      }
      opt_delete++;
    }
    else
      found_parts++;
  }
  if (my_errno != HA_ERR_END_OF_FILE && my_errno != HA_ERR_RECORD_DELETED)
    printf("error: %d from mi_rrnd\n",my_errno);
  if (write_count != opt_delete)
  {
    printf("Deleted only %d of %d records (%d parts)\n",opt_delete,write_count,
	   found_parts);
    goto err;
  }
end:
  if (mi_close(file))
    goto err;
  mi_panic(HA_PANIC_CLOSE);			/* Should close log */
  if (!silent)
  {
    printf("\nFollowing test have been made:\n");
    printf("Write records: %d\nUpdate records: %d\nSame-key-read: %d\nDelete records: %d\n", write_count,update,dupp_keys,opt_delete);
    if (rec_pointer_size)
      printf("Record pointer size:  %d\n",rec_pointer_size);
    printf("myisam_block_size:    %u\n", myisam_block_size);
    if (key_cacheing)
    {
      puts("Key cache used");
      printf("key_cache_block_size: %u\n", key_cache_block_size);
      if (write_cacheing)
	puts("Key cache resized");
    }
    if (write_cacheing)
      puts("Write cacheing used");
    if (write_cacheing)
      puts("quick mode");
    if (async_io && locking)
      puts("Asyncron io with locking used");
    else if (locking)
      puts("Locking used");
    if (use_blob)
      puts("blobs used");
    printf("key cache status: \n\
blocks used:%10lu\n\
w_requests: %10lu\n\
writes:     %10lu\n\
r_requests: %10lu\n\
reads:      %10lu\n",
	   _my_blocks_used,_my_cache_w_requests, _my_cache_write,
	   _my_cache_r_requests,_my_cache_read);
  }
  end_key_cache();
  if (blob_buffer)
    my_free(blob_buffer,MYF(0));
  my_end(silent ? MY_CHECK_ERROR : MY_CHECK_ERROR | MY_GIVE_INFO);
  return(0);
err:
  printf("got error: %d when using MyISAM-database\n",my_errno);
  if (file)
    VOID(mi_close(file));
  return(1);
} /* main */


	/* l{ser optioner */
	/* OBS! intierar endast DEBUG - ingen debuggning h{r ! */

static void get_options(int argc, char **argv)
{
  char *pos,*progname;
  DEBUGGER_OFF;

  progname= argv[0];

  while (--argc >0 && *(pos = *(++argv)) == '-' ) {
    switch(*++pos) {
    case 'B':
      pack_type= HA_BINARY_PACK_KEY;
      break;
    case 'b':
      use_blob=1;
      break;
    case 'K':				/* Use key cacheing */
      key_cacheing=1;
      if (*++pos)
	key_cache_size=atol(pos);
      break;
    case 'W':				/* Use write cacheing */
      write_cacheing=1;
      if (*++pos)
	my_default_record_cache_size=atoi(pos);
      break;
    case 'd':
      remove_count= atoi(++pos);
      break;
    case 'i':
      if (*++pos)
	srand(atoi(pos));
      break;
    case 'l':
      use_log=1;
      break;
    case 'L':
      locking=1;
      break;
    case 'A':				/* use asyncron io */
      async_io=1;
      if (*++pos)
	my_default_record_cache_size=atoi(pos);
      break;
    case 'v':				/* verbose */
      verbose=1;
      break;
    case 'm':				/* records */
      if ((recant=atoi(++pos)) < 10)
      {
	fprintf(stderr,"record count must be >= 10\n");
	exit(1);
      }
      break;
    case 'e':				/* myisam_block_length */
      if ((myisam_block_size=atoi(++pos)) < MI_MIN_KEY_BLOCK_LENGTH ||
	  myisam_block_size > MI_MAX_KEY_BLOCK_LENGTH)
      {
	fprintf(stderr,"Wrong myisam_block_length\n");
	exit(1);
      }
      myisam_block_size=1 << my_bit_log2(myisam_block_size);
      break;
    case 'E':				/* myisam_block_length */
      if ((key_cache_block_size=atoi(++pos)) < MI_MIN_KEY_BLOCK_LENGTH ||
	  key_cache_block_size > MI_MAX_KEY_BLOCK_LENGTH)
      {
	fprintf(stderr,"Wrong key_cache_block_size\n");
	exit(1);
      }
      key_cache_block_size=1 << my_bit_log2(key_cache_block_size);
      break;
    case 'f':
      if ((first_key=atoi(++pos)) < 0 || first_key >= MYISAM_KEYS)
	first_key=0;
      break;
    case 'k':
      if ((keys=(uint) atoi(++pos)) < 1 ||
	   keys > (uint) (MYISAM_KEYS-first_key))
	keys=MYISAM_KEYS-first_key;
      break;
    case 'P':
      pack_type=0;			/* Don't use DIFF_LENGTH */
      pack_seg=0;
      break;
    case 'R':				/* Length of record pointer */
      rec_pointer_size=atoi(++pos);
      if (rec_pointer_size > 7)
	rec_pointer_size=0;
      break;
    case 'S':
      pack_fields=0;			/* Static-length-records */
      break;
    case 's':
      silent=1;
      break;
    case 't':
      testflag=atoi(++pos);		/* testmod */
      break;
    case 'q':
      opt_quick_mode=1;
      break;
    case 'c':
      create_flag|= HA_CREATE_CHECKSUM;
      break;
    case 'D':
      create_flag|=HA_CREATE_DELAY_KEY_WRITE;
      break;
    case '?':
    case 'I':
    case 'V':
      printf("%s  Ver 1.2 for %s at %s\n",progname,SYSTEM_TYPE,MACHINE_TYPE);
      puts("By Monty, for your professional use\n");
      printf("Usage: %s [-?AbBcDIKLPRqSsVWltv] [-k#] [-f#] [-m#] [-e#] [-E#] [-t#]\n",
	     progname);
      exit(0);
    case '#':
      DEBUGGER_ON;
      DBUG_PUSH (++pos);
      break;
    default:
      printf("Illegal option: '%c'\n",*pos);
      break;
    }
  }
  return;
} /* get options */

	/* Get a random value 0 <= x <= n */

static uint rnd(uint max_value)
{
  return (uint) ((rand() & 32767)/32767.0*max_value);
} /* rnd */


	/* Create a variable length record */

static void fix_length(byte *rec, uint length)
{
  bmove(rec+STANDARD_LENGTH,
	"0123456789012345678901234567890123456789012345678901234567890",
	length-STANDARD_LENGTH);
  strfill(rec+length,STANDARD_LENGTH+60-length,' ');
} /* fix_length */


	/* Put maybe a blob in record */

static void put_blob_in_record(char *blob_pos, char **blob_buffer)
{
  ulong i,length;
  if (use_blob)
  {
    if (rnd(10) == 0)
    {
      if (! *blob_buffer &&
	  !(*blob_buffer=my_malloc((uint) use_blob,MYF(MY_WME))))
      {
	use_blob=0;
	return;
      }
      length=rnd(use_blob);
      for (i=0 ; i < length ; i++)
	(*blob_buffer)[i]=(char) (length+i);
      int4store(blob_pos,length);
      memcpy_fixed(blob_pos+4,(char*) blob_buffer,sizeof(char*));
    }
    else
    {
      int4store(blob_pos,0);
    }
  }
  return;
}


static void copy_key(MI_INFO *info,uint inx,uchar *rec,uchar *key_buff)
{
  HA_KEYSEG *keyseg;

  for (keyseg=info->s->keyinfo[inx].seg ; keyseg->type ; keyseg++)
  {
    memcpy(key_buff,rec+keyseg->start,(size_t) keyseg->length);
    key_buff+=keyseg->length;
  }
  return;
}