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mariadb/storage/myisam/mi_create.c
unknown d50ae16569 Added support for key_block_size for key and table level (WL#602) 
Added support for key_block_size to MyISAM.
Simplify interface to 'new Key' to make it easier to add new key options.
mysqld option --new is used to define where key options are printed.
(In 5.3 we should move all key options to after key part definition to avoid problem with reserved names)
Fixed some compiler warnings and a memory leak in ssl


include/my_base.h:
  Added flag to check if block size for key was secified
include/my_sys.h:
  Added new support function to round up to a power of two
include/myisam.h:
  Rename block_size -> block_size_index to avoid confusion with 'block_size'
include/violite.h:
  Added function to free memory after new_VioSSLAcceptorFd
  (Will rename all vio_ssl functions in a future changeset)
mysql-test/mysql-test-run.pl:
  Don't print port number info when we use --extern
mysql-test/r/myisam.result:
  Added test for key_block_size
mysql-test/t/myisam.test:
  Added test for key_block_size
mysys/mf_keycache.c:
  Simplify code
mysys/my_bit.c:
  Added new support function to round up to a power of two
sql/ha_myisam.cc:
  Tell MyISAM to use the specified key_block_size
  MyISAM also updates the global key_block_size from the used values.
sql/handler.cc:
  Added 'default_key_create_info' to be used as 'dummy' argument to 'new Key'
sql/handler.h:
  Added KEY_CREATE_INFO, to be used as for general options for KEY's
sql/item_func.h:
  Removed compiler warning
sql/lex.h:
  Added new symbol
sql/mysqld.cc:
  Fixed memory leak in ssl (new_VioSSLAcceptorFd)
sql/sql_class.h:
  Change 'new Key' to use KEY_CREATE_INFO instead of 'algoritm', parser, key_page_size.
  This makes it easier to add new key options in the future.
sql/sql_lex.h:
  Added key create options
sql/sql_parse.cc:
  Use new interface to 'new Key'
sql/sql_show.cc:
  Added support for key_block_size
  If --new is used, key options are printed after the key part definition.
sql/sql_table.cc:
  Use new interface to 'new Key'
  Add support for key_block_size
sql/sql_yacc.yy:
  Add support for key_block_size
  Allow key options before and after key_parts (In future they should be always after the key_part defintion)
  Use new interface to 'new Key'
sql/structs.h:
  Added block_size to keys
sql/table.cc:
  Remmeber and read key_block_size for table and key level
sql/table.h:
  Added default key_block_size for table
sql/unireg.cc:
  Remember key_block_size for key
storage/myisam/ft_eval.c:
  Set block_length to 0 to get default key page size
storage/myisam/ft_test1.c:
  Set block_length to 0 to get default key page size
storage/myisam/mi_check.c:
  block_size -> block_size_index
storage/myisam/mi_create.c:
  Added support for block size per key.
  Block size is rounded up to next power of two and enforced between MIN and MAX KEY_BLOCK_LENGTH.
  Align start of key block to start at an even offset of max_key_block_length to ensure key cache works good if all key pages are of same size.
storage/myisam/mi_open.c:
  block_size -> block_size_index
storage/myisam/mi_page.c:
  block_size -> block_size_index
storage/myisam/mi_test1.c:
  Set block_length to 0 to get default key page size
storage/myisam/mi_test2.c:
  Set block_length to 0 to get default key page size
storage/myisam/mi_test3.c:
  Set block_length to 0 to get default key page size
storage/myisam/myisamdef.h:
  block_size -> block_size_index to avoid confusion with 'block_size' in MySQL
  Added block_size as argument to MI_BLOCK_SIZE
  Added missing prototypes to get rid of compiler warnings
storage/myisam/myisampack.c:
  Removed compiler warning
  block_size -> block_size_index
vio/viosslfactories.c:
  Fixed memory leak in ssl (new_VioSSLAcceptorFd)
mysql-test/r/myisam-system.result:
  New BitKeeper file ``mysql-test/r/myisam-system.result''
mysql-test/t/myisam-system.test:
  New BitKeeper file ``mysql-test/t/myisam-system.test''
2006-05-03 15:59:17 +03:00

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/* 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 */
/* Create a MyISAM table */
#include "ftdefs.h"
#include "sp_defs.h"
#if defined(MSDOS) || defined(__WIN__)
#ifdef __WIN__
#include <fcntl.h>
#else
#include <process.h> /* Prototype for getpid */
#endif
#endif
#include <m_ctype.h>
/*
Old options is used when recreating database, from myisamchk
*/
int mi_create(const char *name,uint keys,MI_KEYDEF *keydefs,
uint columns, MI_COLUMNDEF *recinfo,
uint uniques, MI_UNIQUEDEF *uniquedefs,
MI_CREATE_INFO *ci,uint flags)
{
register uint i,j;
File dfile,file;
int errpos,save_errno, create_mode= O_RDWR | O_TRUNC;
myf create_flag;
uint fields,length,max_key_length,packed,pointer,real_length_diff,
key_length,info_length,key_segs,options,min_key_length_skip,
base_pos,long_varchar_count,varchar_length,
max_key_block_length,unique_key_parts,fulltext_keys,offset;
uint aligned_key_start, block_length;
ulong reclength, real_reclength,min_pack_length;
char filename[FN_REFLEN],linkname[FN_REFLEN], *linkname_ptr;
ulong pack_reclength;
ulonglong tot_length,max_rows, tmp;
enum en_fieldtype type;
MYISAM_SHARE share;
MI_KEYDEF *keydef,tmp_keydef;
MI_UNIQUEDEF *uniquedef;
HA_KEYSEG *keyseg,tmp_keyseg;
MI_COLUMNDEF *rec;
ulong *rec_per_key_part;
my_off_t key_root[MI_MAX_POSSIBLE_KEY],key_del[MI_MAX_KEY_BLOCK_SIZE];
MI_CREATE_INFO tmp_create_info;
DBUG_ENTER("mi_create");
if (!ci)
{
bzero((char*) &tmp_create_info,sizeof(tmp_create_info));
ci=&tmp_create_info;
}
if (keys + uniques > MI_MAX_KEY || columns == 0)
{
DBUG_RETURN(my_errno=HA_WRONG_CREATE_OPTION);
}
LINT_INIT(dfile);
LINT_INIT(file);
errpos=0;
options=0;
bzero((byte*) &share,sizeof(share));
if (flags & HA_DONT_TOUCH_DATA)
{
if (!(ci->old_options & HA_OPTION_TEMP_COMPRESS_RECORD))
options=ci->old_options &
(HA_OPTION_COMPRESS_RECORD | HA_OPTION_PACK_RECORD |
HA_OPTION_READ_ONLY_DATA | HA_OPTION_CHECKSUM |
HA_OPTION_TMP_TABLE | HA_OPTION_DELAY_KEY_WRITE);
else
options=ci->old_options &
(HA_OPTION_CHECKSUM | HA_OPTION_TMP_TABLE | HA_OPTION_DELAY_KEY_WRITE);
}
if (ci->reloc_rows > ci->max_rows)
ci->reloc_rows=ci->max_rows; /* Check if wrong parameter */
if (!(rec_per_key_part=
(ulong*) my_malloc((keys + uniques)*MI_MAX_KEY_SEG*sizeof(long),
MYF(MY_WME | MY_ZEROFILL))))
DBUG_RETURN(my_errno);
/* Start by checking fields and field-types used */
reclength=varchar_length=long_varchar_count=packed=
min_pack_length=pack_reclength=0;
for (rec=recinfo, fields=0 ;
fields != columns ;
rec++,fields++)
{
reclength+=rec->length;
if ((type=(enum en_fieldtype) rec->type) != FIELD_NORMAL &&
type != FIELD_CHECK)
{
packed++;
if (type == FIELD_BLOB)
{
share.base.blobs++;
if (pack_reclength != INT_MAX32)
{
if (rec->length == 4+mi_portable_sizeof_char_ptr)
pack_reclength= INT_MAX32;
else
pack_reclength+=(1 << ((rec->length-mi_portable_sizeof_char_ptr)*8)); /* Max blob length */
}
}
else if (type == FIELD_SKIP_PRESPACE ||
type == FIELD_SKIP_ENDSPACE)
{
if (pack_reclength != INT_MAX32)
pack_reclength+= rec->length > 255 ? 2 : 1;
min_pack_length++;
}
else if (type == FIELD_VARCHAR)
{
varchar_length+= rec->length-1; /* Used for min_pack_length */
packed--;
pack_reclength++;
min_pack_length++;
/* We must test for 257 as length includes pack-length */
if (test(rec->length >= 257))
{
long_varchar_count++;
pack_reclength+= 2; /* May be packed on 3 bytes */
}
}
else if (type != FIELD_SKIP_ZERO)
{
min_pack_length+=rec->length;
packed--; /* Not a pack record type */
}
}
else /* FIELD_NORMAL */
min_pack_length+=rec->length;
}
if ((packed & 7) == 1)
{ /* Bad packing, try to remove a zero-field */
while (rec != recinfo)
{
rec--;
if (rec->type == (int) FIELD_SKIP_ZERO && rec->length == 1)
{
rec->type=(int) FIELD_NORMAL;
packed--;
min_pack_length++;
break;
}
}
}
if (packed || (flags & HA_PACK_RECORD))
options|=HA_OPTION_PACK_RECORD; /* Must use packed records */
/* We can't use checksum with static length rows */
if (!(options & HA_OPTION_PACK_RECORD))
options&= ~HA_OPTION_CHECKSUM;
if (!(options & (HA_OPTION_PACK_RECORD | HA_OPTION_COMPRESS_RECORD)))
min_pack_length+= varchar_length;
if (flags & HA_CREATE_TMP_TABLE)
{
options|= HA_OPTION_TMP_TABLE;
create_mode|= O_EXCL | O_NOFOLLOW;
}
if (flags & HA_CREATE_CHECKSUM || (options & HA_OPTION_CHECKSUM))
{
options|= HA_OPTION_CHECKSUM;
min_pack_length++;
}
if (flags & HA_CREATE_DELAY_KEY_WRITE)
options|= HA_OPTION_DELAY_KEY_WRITE;
if (flags & HA_CREATE_RELIES_ON_SQL_LAYER)
options|= HA_OPTION_RELIES_ON_SQL_LAYER;
packed=(packed+7)/8;
if (pack_reclength != INT_MAX32)
pack_reclength+= reclength+packed +
test(test_all_bits(options, HA_OPTION_CHECKSUM | HA_PACK_RECORD));
min_pack_length+=packed;
if (!ci->data_file_length && ci->max_rows)
{
if (pack_reclength == INT_MAX32 ||
(~(ulonglong) 0)/ci->max_rows < (ulonglong) pack_reclength)
ci->data_file_length= ~(ulonglong) 0;
else
ci->data_file_length=(ulonglong) ci->max_rows*pack_reclength;
}
else if (!ci->max_rows)
ci->max_rows=(ha_rows) (ci->data_file_length/(min_pack_length +
((options & HA_OPTION_PACK_RECORD) ?
3 : 0)));
if (options & (HA_OPTION_COMPRESS_RECORD | HA_OPTION_PACK_RECORD))
pointer=mi_get_pointer_length(ci->data_file_length,myisam_data_pointer_size);
else
pointer=mi_get_pointer_length(ci->max_rows,myisam_data_pointer_size);
if (!(max_rows=(ulonglong) ci->max_rows))
max_rows= ((((ulonglong) 1 << (pointer*8)) -1) / min_pack_length);
real_reclength=reclength;
if (!(options & (HA_OPTION_COMPRESS_RECORD | HA_OPTION_PACK_RECORD)))
{
if (reclength <= pointer)
reclength=pointer+1; /* reserve place for delete link */
}
else
reclength+= long_varchar_count; /* We need space for varchar! */
max_key_length=0; tot_length=0 ; key_segs=0;
fulltext_keys=0;
max_key_block_length=0;
share.state.rec_per_key_part=rec_per_key_part;
share.state.key_root=key_root;
share.state.key_del=key_del;
if (uniques)
{
max_key_block_length= myisam_block_size;
max_key_length= MI_UNIQUE_HASH_LENGTH + pointer;
}
for (i=0, keydef=keydefs ; i < keys ; i++ , keydef++)
{
share.state.key_root[i]= HA_OFFSET_ERROR;
min_key_length_skip=length=real_length_diff=0;
key_length=pointer;
if (keydef->flag & HA_SPATIAL)
{
#ifdef HAVE_SPATIAL
/* BAR TODO to support 3D and more dimensions in the future */
uint sp_segs=SPDIMS*2;
keydef->flag=HA_SPATIAL;
if (flags & HA_DONT_TOUCH_DATA)
{
/*
called by myisamchk - i.e. table structure was taken from
MYI file and SPATIAL key *does have* additional sp_segs keysegs.
keydef->seg here points right at the GEOMETRY segment,
so we only need to decrease keydef->keysegs.
(see recreate_table() in mi_check.c)
*/
keydef->keysegs-=sp_segs-1;
}
for (j=0, keyseg=keydef->seg ; (int) j < keydef->keysegs ;
j++, keyseg++)
{
if (keyseg->type != HA_KEYTYPE_BINARY &&
keyseg->type != HA_KEYTYPE_VARBINARY1 &&
keyseg->type != HA_KEYTYPE_VARBINARY2)
{
my_errno=HA_WRONG_CREATE_OPTION;
goto err;
}
}
keydef->keysegs+=sp_segs;
key_length+=SPLEN*sp_segs;
length++; /* At least one length byte */
min_key_length_skip+=SPLEN*2*SPDIMS;
#else
my_errno= HA_ERR_UNSUPPORTED;
goto err;
#endif /*HAVE_SPATIAL*/
}
else if (keydef->flag & HA_FULLTEXT)
{
keydef->flag=HA_FULLTEXT | HA_PACK_KEY | HA_VAR_LENGTH_KEY;
options|=HA_OPTION_PACK_KEYS; /* Using packed keys */
for (j=0, keyseg=keydef->seg ; (int) j < keydef->keysegs ;
j++, keyseg++)
{
if (keyseg->type != HA_KEYTYPE_TEXT &&
keyseg->type != HA_KEYTYPE_VARTEXT1 &&
keyseg->type != HA_KEYTYPE_VARTEXT2)
{
my_errno=HA_WRONG_CREATE_OPTION;
goto err;
}
if (!(keyseg->flag & HA_BLOB_PART) &&
(keyseg->type == HA_KEYTYPE_VARTEXT1 ||
keyseg->type == HA_KEYTYPE_VARTEXT2))
{
/* Make a flag that this is a VARCHAR */
keyseg->flag|= HA_VAR_LENGTH_PART;
/* Store in bit_start number of bytes used to pack the length */
keyseg->bit_start= ((keyseg->type == HA_KEYTYPE_VARTEXT1)?
1 : 2);
}
}
fulltext_keys++;
key_length+= HA_FT_MAXBYTELEN+HA_FT_WLEN;
length++; /* At least one length byte */
min_key_length_skip+=HA_FT_MAXBYTELEN;
real_length_diff=HA_FT_MAXBYTELEN-FT_MAX_WORD_LEN_FOR_SORT;
}
else
{
/* Test if prefix compression */
if (keydef->flag & HA_PACK_KEY)
{
/* Can't use space_compression on number keys */
if ((keydef->seg[0].flag & HA_SPACE_PACK) &&
keydef->seg[0].type == (int) HA_KEYTYPE_NUM)
keydef->seg[0].flag&= ~HA_SPACE_PACK;
/* Only use HA_PACK_KEY when first segment is a variable length key */
if (!(keydef->seg[0].flag & (HA_SPACE_PACK | HA_BLOB_PART |
HA_VAR_LENGTH_PART)))
{
/* pack relative to previous key */
keydef->flag&= ~HA_PACK_KEY;
keydef->flag|= HA_BINARY_PACK_KEY | HA_VAR_LENGTH_KEY;
}
else
{
keydef->seg[0].flag|=HA_PACK_KEY; /* for easyer intern test */
keydef->flag|=HA_VAR_LENGTH_KEY;
options|=HA_OPTION_PACK_KEYS; /* Using packed keys */
}
}
if (keydef->flag & HA_BINARY_PACK_KEY)
options|=HA_OPTION_PACK_KEYS; /* Using packed keys */
if (keydef->flag & HA_AUTO_KEY && ci->with_auto_increment)
share.base.auto_key=i+1;
for (j=0, keyseg=keydef->seg ; j < keydef->keysegs ; j++, keyseg++)
{
/* numbers are stored with high by first to make compression easier */
switch (keyseg->type) {
case HA_KEYTYPE_SHORT_INT:
case HA_KEYTYPE_LONG_INT:
case HA_KEYTYPE_FLOAT:
case HA_KEYTYPE_DOUBLE:
case HA_KEYTYPE_USHORT_INT:
case HA_KEYTYPE_ULONG_INT:
case HA_KEYTYPE_LONGLONG:
case HA_KEYTYPE_ULONGLONG:
case HA_KEYTYPE_INT24:
case HA_KEYTYPE_UINT24:
case HA_KEYTYPE_INT8:
keyseg->flag|= HA_SWAP_KEY;
break;
case HA_KEYTYPE_VARTEXT1:
case HA_KEYTYPE_VARTEXT2:
case HA_KEYTYPE_VARBINARY1:
case HA_KEYTYPE_VARBINARY2:
if (!(keyseg->flag & HA_BLOB_PART))
{
/* Make a flag that this is a VARCHAR */
keyseg->flag|= HA_VAR_LENGTH_PART;
/* Store in bit_start number of bytes used to pack the length */
keyseg->bit_start= ((keyseg->type == HA_KEYTYPE_VARTEXT1 ||
keyseg->type == HA_KEYTYPE_VARBINARY1) ?
1 : 2);
}
break;
default:
break;
}
if (keyseg->flag & HA_SPACE_PACK)
{
DBUG_ASSERT(!(keyseg->flag & HA_VAR_LENGTH_PART));
keydef->flag |= HA_SPACE_PACK_USED | HA_VAR_LENGTH_KEY;
options|=HA_OPTION_PACK_KEYS; /* Using packed keys */
length++; /* At least one length byte */
min_key_length_skip+=keyseg->length;
if (keyseg->length >= 255)
{ /* prefix may be 3 bytes */
min_key_length_skip+=2;
length+=2;
}
}
if (keyseg->flag & (HA_VAR_LENGTH_PART | HA_BLOB_PART))
{
DBUG_ASSERT(!test_all_bits(keyseg->flag,
(HA_VAR_LENGTH_PART | HA_BLOB_PART)));
keydef->flag|=HA_VAR_LENGTH_KEY;
length++; /* At least one length byte */
options|=HA_OPTION_PACK_KEYS; /* Using packed keys */
min_key_length_skip+=keyseg->length;
if (keyseg->length >= 255)
{ /* prefix may be 3 bytes */
min_key_length_skip+=2;
length+=2;
}
}
key_length+= keyseg->length;
if (keyseg->null_bit)
{
key_length++;
options|=HA_OPTION_PACK_KEYS;
keyseg->flag|=HA_NULL_PART;
keydef->flag|=HA_VAR_LENGTH_KEY | HA_NULL_PART_KEY;
}
}
} /* if HA_FULLTEXT */
key_segs+=keydef->keysegs;
if (keydef->keysegs > MI_MAX_KEY_SEG)
{
my_errno=HA_WRONG_CREATE_OPTION;
goto err;
}
/*
key_segs may be 0 in the case when we only want to be able to
add on row into the table. This can happen with some DISTINCT queries
in MySQL
*/
if ((keydef->flag & (HA_NOSAME | HA_NULL_PART_KEY)) == HA_NOSAME &&
key_segs)
share.state.rec_per_key_part[key_segs-1]=1L;
length+=key_length;
/* Get block length for key, if defined by user */
block_length= (keydef->block_length ?
my_round_up_to_next_power(keydef->block_length) :
myisam_block_size);
block_length= max(block_length, MI_MIN_KEY_BLOCK_LENGTH);
block_length= min(block_length, MI_MAX_KEY_BLOCK_LENGTH);
keydef->block_length= MI_BLOCK_SIZE(length-real_length_diff,
pointer,MI_MAX_KEYPTR_SIZE,
block_length);
if (keydef->block_length > MI_MAX_KEY_BLOCK_LENGTH ||
length >= MI_MAX_KEY_BUFF)
{
my_errno=HA_WRONG_CREATE_OPTION;
goto err;
}
set_if_bigger(max_key_block_length,keydef->block_length);
keydef->keylength= (uint16) key_length;
keydef->minlength= (uint16) (length-min_key_length_skip);
keydef->maxlength= (uint16) length;
if (length > max_key_length)
max_key_length= length;
tot_length+= (max_rows/(ulong) (((uint) keydef->block_length-5)/
(length*2)))*
(ulong) keydef->block_length;
}
for (i=max_key_block_length/MI_MIN_KEY_BLOCK_LENGTH ; i-- ; )
key_del[i]=HA_OFFSET_ERROR;
unique_key_parts=0;
offset=reclength-uniques*MI_UNIQUE_HASH_LENGTH;
for (i=0, uniquedef=uniquedefs ; i < uniques ; i++ , uniquedef++)
{
uniquedef->key=keys+i;
unique_key_parts+=uniquedef->keysegs;
share.state.key_root[keys+i]= HA_OFFSET_ERROR;
tot_length+= (max_rows/(ulong) (((uint) myisam_block_size-5)/
((MI_UNIQUE_HASH_LENGTH + pointer)*2)))*
(ulong) myisam_block_size;
}
keys+=uniques; /* Each unique has 1 key */
key_segs+=uniques; /* Each unique has 1 key seg */
base_pos=(MI_STATE_INFO_SIZE + keys * MI_STATE_KEY_SIZE +
max_key_block_length/MI_MIN_KEY_BLOCK_LENGTH*
MI_STATE_KEYBLOCK_SIZE+
key_segs*MI_STATE_KEYSEG_SIZE);
info_length=base_pos+(uint) (MI_BASE_INFO_SIZE+
keys * MI_KEYDEF_SIZE+
uniques * MI_UNIQUEDEF_SIZE +
(key_segs + unique_key_parts)*HA_KEYSEG_SIZE+
columns*MI_COLUMNDEF_SIZE);
bmove(share.state.header.file_version,(byte*) myisam_file_magic,4);
ci->old_options=options| (ci->old_options & HA_OPTION_TEMP_COMPRESS_RECORD ?
HA_OPTION_COMPRESS_RECORD |
HA_OPTION_TEMP_COMPRESS_RECORD: 0);
mi_int2store(share.state.header.options,ci->old_options);
mi_int2store(share.state.header.header_length,info_length);
mi_int2store(share.state.header.state_info_length,MI_STATE_INFO_SIZE);
mi_int2store(share.state.header.base_info_length,MI_BASE_INFO_SIZE);
mi_int2store(share.state.header.base_pos,base_pos);
share.state.header.language= (ci->language ?
ci->language : default_charset_info->number);
share.state.header.max_block_size_index= max_key_block_length/MI_MIN_KEY_BLOCK_LENGTH;
share.state.dellink = HA_OFFSET_ERROR;
share.state.process= (ulong) getpid();
share.state.unique= (ulong) 0;
share.state.update_count=(ulong) 0;
share.state.version= (ulong) time((time_t*) 0);
share.state.sortkey= (ushort) ~0;
share.state.auto_increment=ci->auto_increment;
share.options=options;
share.base.rec_reflength=pointer;
/* Get estimate for index file length (this may be wrong for FT keys) */
tmp= (tot_length + max_key_block_length * keys *
MI_INDEX_BLOCK_MARGIN) / MI_MIN_KEY_BLOCK_LENGTH;
/*
use maximum of key_file_length we calculated and key_file_length value we
got from MYI file header (see also myisampack.c:save_state)
*/
share.base.key_reflength=
mi_get_pointer_length(max(ci->key_file_length,tmp),3);
share.base.keys= share.state.header.keys= keys;
share.state.header.uniques= uniques;
share.state.header.fulltext_keys= fulltext_keys;
mi_int2store(share.state.header.key_parts,key_segs);
mi_int2store(share.state.header.unique_key_parts,unique_key_parts);
mi_set_all_keys_active(share.state.key_map, keys);
aligned_key_start= my_round_up_to_next_power(max_key_block_length ?
max_key_block_length :
myisam_block_size);
share.base.keystart= share.state.state.key_file_length=
MY_ALIGN(info_length, aligned_key_start);
share.base.max_key_block_length=max_key_block_length;
share.base.max_key_length=ALIGN_SIZE(max_key_length+4);
share.base.records=ci->max_rows;
share.base.reloc= ci->reloc_rows;
share.base.reclength=real_reclength;
share.base.pack_reclength=reclength+ test(options & HA_OPTION_CHECKSUM);
share.base.max_pack_length=pack_reclength;
share.base.min_pack_length=min_pack_length;
share.base.pack_bits=packed;
share.base.fields=fields;
share.base.pack_fields=packed;
#ifdef USE_RAID
share.base.raid_type=ci->raid_type;
share.base.raid_chunks=ci->raid_chunks;
share.base.raid_chunksize=ci->raid_chunksize;
#endif
/* max_data_file_length and max_key_file_length are recalculated on open */
if (options & HA_OPTION_TMP_TABLE)
share.base.max_data_file_length=(my_off_t) ci->data_file_length;
share.base.min_block_length=
(share.base.pack_reclength+3 < MI_EXTEND_BLOCK_LENGTH &&
! share.base.blobs) ?
max(share.base.pack_reclength,MI_MIN_BLOCK_LENGTH) :
MI_EXTEND_BLOCK_LENGTH;
if (! (flags & HA_DONT_TOUCH_DATA))
share.state.create_time= (long) time((time_t*) 0);
pthread_mutex_lock(&THR_LOCK_myisam);
if (ci->index_file_name)
{
char *iext= strrchr(ci->index_file_name, '.');
int have_iext= iext && !strcmp(iext, MI_NAME_IEXT);
fn_format(filename, ci->index_file_name, "", MI_NAME_IEXT,
MY_UNPACK_FILENAME| (have_iext ? MY_REPLACE_EXT :MY_APPEND_EXT));
fn_format(linkname, name, "", MI_NAME_IEXT,
MY_UNPACK_FILENAME|MY_APPEND_EXT);
linkname_ptr=linkname;
/*
Don't create the table if the link or file exists to ensure that one
doesn't accidently destroy another table.
*/
create_flag=0;
}
else
{
fn_format(filename, name, "", MI_NAME_IEXT,
(MY_UNPACK_FILENAME |
(flags & HA_DONT_TOUCH_DATA) ? MY_RETURN_REAL_PATH : 0) |
MY_APPEND_EXT);
linkname_ptr=0;
/* Replace the current file */
create_flag=MY_DELETE_OLD;
}
/*
If a MRG_MyISAM table is in use, the mapped MyISAM tables are open,
but no entry is made in the table cache for them.
A TRUNCATE command checks for the table in the cache only and could
be fooled to believe, the table is not open.
Pull the emergency brake in this situation. (Bug #8306)
*/
if (test_if_reopen(filename))
{
my_printf_error(0, "MyISAM table '%s' is in use "
"(most likely by a MERGE table). Try FLUSH TABLES.",
MYF(0), name + dirname_length(name));
goto err;
}
if ((file= my_create_with_symlink(linkname_ptr, filename, 0, create_mode,
MYF(MY_WME | create_flag))) < 0)
goto err;
errpos=1;
if (!(flags & HA_DONT_TOUCH_DATA))
{
#ifdef USE_RAID
if (share.base.raid_type)
{
(void) fn_format(filename, name, "", MI_NAME_DEXT,
MY_UNPACK_FILENAME | MY_APPEND_EXT);
if ((dfile=my_raid_create(filename, 0, create_mode,
share.base.raid_type,
share.base.raid_chunks,
share.base.raid_chunksize,
MYF(MY_WME | MY_RAID))) < 0)
goto err;
}
else
#endif
{
if (ci->data_file_name)
{
char *dext= strrchr(ci->data_file_name, '.');
int have_dext= dext && !strcmp(dext, MI_NAME_DEXT);
fn_format(filename, ci->data_file_name, "", MI_NAME_DEXT,
MY_UNPACK_FILENAME |
(have_dext ? MY_REPLACE_EXT : MY_APPEND_EXT));
fn_format(linkname, name, "",MI_NAME_DEXT,
MY_UNPACK_FILENAME | MY_APPEND_EXT);
linkname_ptr=linkname;
create_flag=0;
}
else
{
fn_format(filename,name,"", MI_NAME_DEXT,
MY_UNPACK_FILENAME | MY_APPEND_EXT);
linkname_ptr=0;
create_flag=MY_DELETE_OLD;
}
if ((dfile=
my_create_with_symlink(linkname_ptr, filename, 0, create_mode,
MYF(MY_WME | create_flag))) < 0)
goto err;
}
errpos=3;
}
if (mi_state_info_write(file, &share.state, 2) ||
mi_base_info_write(file, &share.base))
goto err;
#ifndef DBUG_OFF
if ((uint) my_tell(file,MYF(0)) != base_pos+ MI_BASE_INFO_SIZE)
{
uint pos=(uint) my_tell(file,MYF(0));
DBUG_PRINT("warning",("base_length: %d != used_length: %d",
base_pos+ MI_BASE_INFO_SIZE, pos));
}
#endif
/* Write key and keyseg definitions */
for (i=0 ; i < share.base.keys - uniques; i++)
{
uint sp_segs=(keydefs[i].flag & HA_SPATIAL) ? 2*SPDIMS : 0;
if (mi_keydef_write(file, &keydefs[i]))
goto err;
for (j=0 ; j < keydefs[i].keysegs-sp_segs ; j++)
if (mi_keyseg_write(file, &keydefs[i].seg[j]))
goto err;
#ifdef HAVE_SPATIAL
for (j=0 ; j < sp_segs ; j++)
{
HA_KEYSEG sseg;
sseg.type=SPTYPE;
sseg.language= 7; /* Binary */
sseg.null_bit=0;
sseg.bit_start=0;
sseg.bit_end=0;
sseg.bit_length= 0;
sseg.bit_pos= 0;
sseg.length=SPLEN;
sseg.null_pos=0;
sseg.start=j*SPLEN;
sseg.flag= HA_SWAP_KEY;
if (mi_keyseg_write(file, &sseg))
goto err;
}
#endif
}
/* Create extra keys for unique definitions */
offset=reclength-uniques*MI_UNIQUE_HASH_LENGTH;
bzero((char*) &tmp_keydef,sizeof(tmp_keydef));
bzero((char*) &tmp_keyseg,sizeof(tmp_keyseg));
for (i=0; i < uniques ; i++)
{
tmp_keydef.keysegs=1;
tmp_keydef.flag= HA_UNIQUE_CHECK;
tmp_keydef.block_length= (uint16)myisam_block_size;
tmp_keydef.keylength= MI_UNIQUE_HASH_LENGTH + pointer;
tmp_keydef.minlength=tmp_keydef.maxlength=tmp_keydef.keylength;
tmp_keyseg.type= MI_UNIQUE_HASH_TYPE;
tmp_keyseg.length= MI_UNIQUE_HASH_LENGTH;
tmp_keyseg.start= offset;
offset+= MI_UNIQUE_HASH_LENGTH;
if (mi_keydef_write(file,&tmp_keydef) ||
mi_keyseg_write(file,(&tmp_keyseg)))
goto err;
}
/* Save unique definition */
for (i=0 ; i < share.state.header.uniques ; i++)
{
HA_KEYSEG *keyseg_end;
keyseg= uniquedefs[i].seg;
if (mi_uniquedef_write(file, &uniquedefs[i]))
goto err;
for (keyseg= uniquedefs[i].seg, keyseg_end= keyseg+ uniquedefs[i].keysegs;
keyseg < keyseg_end;
keyseg++)
{
switch (keyseg->type) {
case HA_KEYTYPE_VARTEXT1:
case HA_KEYTYPE_VARTEXT2:
case HA_KEYTYPE_VARBINARY1:
case HA_KEYTYPE_VARBINARY2:
if (!(keyseg->flag & HA_BLOB_PART))
{
keyseg->flag|= HA_VAR_LENGTH_PART;
keyseg->bit_start= ((keyseg->type == HA_KEYTYPE_VARTEXT1 ||
keyseg->type == HA_KEYTYPE_VARBINARY1) ?
1 : 2);
}
break;
default:
break;
}
if (mi_keyseg_write(file, keyseg))
goto err;
}
}
for (i=0 ; i < share.base.fields ; i++)
if (mi_recinfo_write(file, &recinfo[i]))
goto err;
#ifndef DBUG_OFF
if ((uint) my_tell(file,MYF(0)) != info_length)
{
uint pos= (uint) my_tell(file,MYF(0));
DBUG_PRINT("warning",("info_length: %d != used_length: %d",
info_length, pos));
}
#endif
/* Enlarge files */
if (my_chsize(file,(ulong) share.base.keystart,0,MYF(0)))
goto err;
if (! (flags & HA_DONT_TOUCH_DATA))
{
#ifdef USE_RELOC
if (my_chsize(dfile,share.base.min_pack_length*ci->reloc_rows,0,MYF(0)))
goto err;
#endif
errpos=2;
if (my_close(dfile,MYF(0)))
goto err;
}
errpos=0;
pthread_mutex_unlock(&THR_LOCK_myisam);
if (my_close(file,MYF(0)))
goto err;
my_free((char*) rec_per_key_part,MYF(0));
DBUG_RETURN(0);
err:
pthread_mutex_unlock(&THR_LOCK_myisam);
save_errno=my_errno;
switch (errpos) {
case 3:
VOID(my_close(dfile,MYF(0)));
/* fall through */
case 2:
/* QQ: T<>nu should add a call to my_raid_delete() here */
if (! (flags & HA_DONT_TOUCH_DATA))
my_delete_with_symlink(fn_format(filename,name,"",MI_NAME_DEXT,
MY_UNPACK_FILENAME | MY_APPEND_EXT),
MYF(0));
/* fall through */
case 1:
VOID(my_close(file,MYF(0)));
if (! (flags & HA_DONT_TOUCH_DATA))
my_delete_with_symlink(fn_format(filename,name,"",MI_NAME_IEXT,
MY_UNPACK_FILENAME | MY_APPEND_EXT),
MYF(0));
}
my_free((char*) rec_per_key_part, MYF(0));
DBUG_RETURN(my_errno=save_errno); /* return the fatal errno */
}
uint mi_get_pointer_length(ulonglong file_length, uint def)
{
DBUG_ASSERT(def >= 2 && def <= 7);
if (file_length) /* If not default */
{
#ifdef NOT_YET_READY_FOR_8_BYTE_POINTERS
if (file_length >= (longlong) 1 << 56)
def=8;
#endif
if (file_length >= (longlong) 1 << 48)
def=7;
if (file_length >= (longlong) 1 << 40)
def=6;
else if (file_length >= (longlong) 1 << 32)
def=5;
else if (file_length >= (1L << 24))
def=4;
else if (file_length >= (1L << 16))
def=3;
else
def=2;
}
return def;
}
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