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mariadb/storage/maria/ma_open.c
Michael Widenius 0f3d4b2f76 Fixed bug that 'maria_read_log -a' didn't set max_trid when reparing tables. 
Fixed bug in Aria when replacing short keys with long keys and a key tree both overflow and underflow at same time.
Fixed several bugs when generating recovery logs when using RGQ with replacing long keys with short keys and vice versa.
Lots of new DBUG_ASSERT()'s
Added more information to recovery log to make it easier to know from where log entry orginated.
Introduced MARIA_PAGE->org_size that tells what the size of the page was in last log entry. This allows us to find out if all key changes for index page was logged.
Small code cleanups:
- Introduced _ma_log_key_changes() to log crc of key page changes
- Added share->max_index_block_size as max size of data one can put in key block (block_size - KEYPAGE_CHECKSUM_SIZE)
  This will later simplify adding a directory to index pages.
- Write page number instead of page postition to DBUG log



mysql-test/lib/v1/mysql-test-run.pl:
  Use --general-log instead of --log to disable warning when using RQG
sql/mysqld.cc:
  If we have already sent ok to client when we get an error, log this to stderr
  Don't disable option --log-output if CSV engine is not supported.
storage/maria/ha_maria.cc:
  Log queries to recovery log also in LOCK TABLES
storage/maria/ma_check.c:
  If param->max_trid is set, use this value instead of max_trid_in_system().
  This is used by recovery to set max_trid to max seen trid so far.
  keyinfo->block_length - KEYPAGE_CHECKSUM_SIZE -> max_index_block_size (Style optimization)
storage/maria/ma_delete.c:
  Mark tables crashed early
  Write page number instead of page position to debug log.
  Added parameter to ma_log_delete() and ma_log_prefix() that is logged so that we can find where wrong log entries where generated.
  Fixed bug where a page was not proplerly written when same key tree had both an overflow and underflow when deleting a key.
  keyinfo->block_length - KEYPAGE_CHECKSUM_SIZE => max_index_block_size (Style optimization)
  ma_log_delete() now has extra parameter of how many bytes from end of page should be appended to log for page (for page overflows)
storage/maria/ma_key_recover.c:
  Added extra parameter to ma_log_prefix() to indicate what caused log entry.
  Update MARIA_PAGE->org_size when logging info about page.
  Much more DBUG_ASSERT()'s.
  Fix some bugs in maria_log_add() to handle page overflows.
  Added _ma_log_key_changes() to log crc of key page changes.
  If EXTRA_STORE_FULL_PAGE_IN_KEY_CHANGES is defines, log the resulting pages to log so one can trivally
  see how the resulting page should have looked like (for errors in CRC values)
storage/maria/ma_key_recover.h:
  Added _ma_log_key_changes() which is only called if EXTRA_DEBUG_KEY_CHANGES is defined.
  Updated function prototypes.
storage/maria/ma_loghandler.h:
  Added more values to en_key_debug, to get more exact location where things went wrong when logging to recovery log.
storage/maria/ma_open.c:
  Initialize share->max_index_block_size
storage/maria/ma_page.c:
  Added updating and testing of MARIA_PAGE->org_size
  Write page number instead of page postition to DBUG log
  Generate error if we read page with wrong data.
  Removed wrong assert: key_del_current != share->state.key_del.
  Simplify _ma_log_compact_keypage()
storage/maria/ma_recovery.c:
  Set param.max_trid to max seen trid before running repair table (used for alter table to create index)
storage/maria/ma_rt_key.c:
  Update call to _ma_log_delete()
storage/maria/ma_rt_split.c:
  Use _ma_log_key_changes()
  Update MARIA_PAGE->org_size
storage/maria/ma_unique.c:
  Remove casts
storage/maria/ma_write.c:
  keyinfo->block_length - KEYPAGE_CHECKSUM_SIZE => share->max_index_block_length.
  Updated calls to _ma_log_prefix()
  Changed code to use _ma_log_key_changes()
  Update ma_page->org_size
  Fixed bug in _ma_log_split() for pages that overflow
  Added KEY_OP_DEBUG logging to functions
  Log KEYPAGE_FLAG in all log entries
storage/maria/maria_def.h:
  Added SHARE->max_index_block_size
  Added MARIA_PAGE->org_size
storage/maria/trnman.c:
  Reset flags for new transaction.
2010-09-06 02:25:44 +03:00

1939 lines
66 KiB
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/* Copyright (C) 2006 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; version 2 of the License.
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 */
/* open a isam-database */
#include "ma_fulltext.h"
#include "ma_sp_defs.h"
#include "ma_rt_index.h"
#include "ma_blockrec.h"
#include <m_ctype.h>
#if defined(MSDOS) || defined(__WIN__)
#ifdef __WIN__
#include <fcntl.h>
#else
#include <process.h> /* Prototype for getpid */
#endif
#endif
static void setup_key_functions(MARIA_KEYDEF *keyinfo);
static my_bool maria_scan_init_dummy(MARIA_HA *info);
static void maria_scan_end_dummy(MARIA_HA *info);
static my_bool maria_once_init_dummy(MARIA_SHARE *, File);
static my_bool maria_once_end_dummy(MARIA_SHARE *);
static uchar *_ma_base_info_read(uchar *ptr, MARIA_BASE_INFO *base);
static uchar *_ma_state_info_read(uchar *ptr, MARIA_STATE_INFO *state);
#define get_next_element(to,pos,size) { memcpy((char*) to,pos,(size_t) size); \
pos+=size;}
#define disk_pos_assert(pos, end_pos) \
if (pos > end_pos) \
{ \
my_errno=HA_ERR_CRASHED; \
goto err; \
}
/******************************************************************************
** Return the shared struct if the table is already open.
** In MySQL the server will handle version issues.
******************************************************************************/
MARIA_HA *_ma_test_if_reopen(const char *filename)
{
LIST *pos;
for (pos=maria_open_list ; pos ; pos=pos->next)
{
MARIA_HA *info=(MARIA_HA*) pos->data;
MARIA_SHARE *share= info->s;
if (!strcmp(share->unique_file_name.str,filename) && share->last_version)
return info;
}
return 0;
}
/*
Open a new instance of an already opened Maria table
SYNOPSIS
maria_clone_internal()
share Share of already open table
mode Mode of table (O_RDONLY | O_RDWR)
data_file Filedescriptor of data file to use < 0 if one should open
open it.
RETURN
# Maria handler
0 Error
*/
static MARIA_HA *maria_clone_internal(MARIA_SHARE *share, const char *name,
int mode, File data_file)
{
int save_errno;
uint errpos;
MARIA_HA info,*m_info;
my_bitmap_map *changed_fields_bitmap;
DBUG_ENTER("maria_clone_internal");
errpos= 0;
bzero((uchar*) &info,sizeof(info));
if (mode == O_RDWR && share->mode == O_RDONLY)
{
my_errno=EACCES; /* Can't open in write mode */
goto err;
}
if (data_file >= 0)
info.dfile.file= data_file;
else if (_ma_open_datafile(&info, share, name, -1))
goto err;
errpos= 5;
/* alloc and set up private structure parts */
if (!my_multi_malloc(MY_WME,
&m_info,sizeof(MARIA_HA),
&info.blobs,sizeof(MARIA_BLOB)*share->base.blobs,
&info.buff,(share->base.max_key_block_length*2+
share->base.max_key_length),
&info.lastkey_buff,share->base.max_key_length*2+1,
&info.first_mbr_key, share->base.max_key_length,
&info.maria_rtree_recursion_state,
share->have_rtree ? 1024 : 0,
&changed_fields_bitmap,
bitmap_buffer_size(share->base.fields),
NullS))
goto err;
errpos= 6;
memcpy(info.blobs,share->blobs,sizeof(MARIA_BLOB)*share->base.blobs);
info.lastkey_buff2= info.lastkey_buff + share->base.max_key_length;
info.last_key.data= info.lastkey_buff;
info.s=share;
info.cur_row.lastpos= HA_OFFSET_ERROR;
info.update= (short) (HA_STATE_NEXT_FOUND+HA_STATE_PREV_FOUND);
info.opt_flag=READ_CHECK_USED;
info.this_unique= (ulong) info.dfile.file; /* Uniq number in process */
#ifdef EXTERNAL_LOCKING
if (share->data_file_type == COMPRESSED_RECORD)
info.this_unique= share->state.unique;
info.this_loop=0; /* Update counter */
info.last_unique= share->state.unique;
info.last_loop= share->state.update_count;
#endif
info.errkey= -1;
info.page_changed=1;
info.keyread_buff= info.buff + share->base.max_key_block_length;
info.lock_type= F_UNLCK;
if (share->options & HA_OPTION_TMP_TABLE)
info.lock_type= F_WRLCK;
_ma_set_data_pagecache_callbacks(&info.dfile, share);
bitmap_init(&info.changed_fields, changed_fields_bitmap,
share->base.fields, 0);
if ((*share->init)(&info))
goto err;
/* The following should be big enough for all pinning purposes */
if (my_init_dynamic_array(&info.pinned_pages,
sizeof(MARIA_PINNED_PAGE),
max(share->base.blobs*2 + 4,
MARIA_MAX_TREE_LEVELS*3), 16))
goto err;
pthread_mutex_lock(&share->intern_lock);
info.read_record= share->read_record;
share->reopen++;
share->write_flag=MYF(MY_NABP | MY_WAIT_IF_FULL);
if (share->options & HA_OPTION_READ_ONLY_DATA)
{
info.lock_type=F_RDLCK;
share->r_locks++;
share->tot_locks++;
}
if ((share->options & HA_OPTION_DELAY_KEY_WRITE) &&
maria_delay_key_write)
share->delay_key_write=1;
if (!share->base.born_transactional) /* For transactional ones ... */
{
/* ... force crash if no trn given */
_ma_set_trn_for_table(&info, &dummy_transaction_object);
info.state= &share->state.state; /* Change global values by default */
}
else
{
info.state= &share->state.common;
*info.state= share->state.state; /* Initial values */
}
info.state_start= info.state; /* Initial values */
pthread_mutex_unlock(&share->intern_lock);
/* Allocate buffer for one record */
/* prerequisites: info->rec_buffer == 0 && info->rec_buff_size == 0 */
if (_ma_alloc_buffer(&info.rec_buff, &info.rec_buff_size,
share->base.default_rec_buff_size))
goto err;
bzero(info.rec_buff, share->base.default_rec_buff_size);
*m_info=info;
#ifdef THREAD
thr_lock_data_init(&share->lock,&m_info->lock,(void*) m_info);
#endif
m_info->open_list.data=(void*) m_info;
maria_open_list=list_add(maria_open_list,&m_info->open_list);
DBUG_RETURN(m_info);
err:
DBUG_PRINT("error", ("error: %d", my_errno));
save_errno=my_errno ? my_errno : HA_ERR_END_OF_FILE;
if ((save_errno == HA_ERR_CRASHED) ||
(save_errno == HA_ERR_CRASHED_ON_USAGE) ||
(save_errno == HA_ERR_CRASHED_ON_REPAIR))
_ma_report_error(save_errno, &share->open_file_name);
switch (errpos) {
case 6:
(*share->end)(&info);
delete_dynamic(&info.pinned_pages);
my_free(m_info, MYF(0));
/* fall through */
case 5:
if (data_file < 0)
VOID(my_close(info.dfile.file, MYF(0)));
break;
}
my_errno=save_errno;
DBUG_RETURN (NULL);
} /* maria_clone_internal */
/* Make a clone of a maria table */
MARIA_HA *maria_clone(MARIA_SHARE *share, int mode)
{
MARIA_HA *new_info;
pthread_mutex_lock(&THR_LOCK_maria);
new_info= maria_clone_internal(share, NullS, mode,
share->data_file_type == BLOCK_RECORD ?
share->bitmap.file.file : -1);
pthread_mutex_unlock(&THR_LOCK_maria);
return new_info;
}
/******************************************************************************
open a MARIA table
See my_base.h for the handle_locking argument
if handle_locking and HA_OPEN_ABORT_IF_CRASHED then abort if the table
is marked crashed or if we are not using locking and the table doesn't
have an open count of 0.
******************************************************************************/
MARIA_HA *maria_open(const char *name, int mode, uint open_flags)
{
int kfile,open_mode,save_errno;
uint i,j,len,errpos,head_length,base_pos,keys, realpath_err,
key_parts,unique_key_parts,fulltext_keys,uniques;
size_t info_length;
char name_buff[FN_REFLEN], org_name[FN_REFLEN], index_name[FN_REFLEN],
data_name[FN_REFLEN];
uchar *disk_cache, *disk_pos, *end_pos;
MARIA_HA info,*m_info,*old_info;
MARIA_SHARE share_buff,*share;
double *rec_per_key_part;
ulong *nulls_per_key_part;
my_off_t key_root[HA_MAX_POSSIBLE_KEY];
ulonglong max_key_file_length, max_data_file_length;
my_bool versioning= 1;
File data_file= -1;
DBUG_ENTER("maria_open");
LINT_INIT(m_info);
kfile= -1;
errpos= 0;
head_length=sizeof(share_buff.state.header);
bzero((uchar*) &info,sizeof(info));
realpath_err= my_realpath(name_buff, fn_format(org_name, name, "",
MARIA_NAME_IEXT,
MY_UNPACK_FILENAME),MYF(0));
if (my_is_symlink(org_name) &&
(realpath_err || (*maria_test_invalid_symlink)(name_buff)))
{
my_errno= HA_WRONG_CREATE_OPTION;
DBUG_RETURN(0);
}
pthread_mutex_lock(&THR_LOCK_maria);
old_info= 0;
if ((open_flags & HA_OPEN_COPY) ||
!(old_info=_ma_test_if_reopen(name_buff)))
{
share= &share_buff;
bzero((uchar*) &share_buff,sizeof(share_buff));
share_buff.state.key_root=key_root;
share_buff.pagecache= multi_pagecache_search((uchar*) name_buff,
(uint) strlen(name_buff),
maria_pagecache);
DBUG_EXECUTE_IF("maria_pretend_crashed_table_on_open",
if (strstr(name, "/t1"))
{
my_errno= HA_ERR_CRASHED;
goto err;
});
if ((kfile=my_open(name_buff,(open_mode=O_RDWR) | O_SHARE,MYF(0))) < 0)
{
if ((errno != EROFS && errno != EACCES) ||
mode != O_RDONLY ||
(kfile=my_open(name_buff,(open_mode=O_RDONLY) | O_SHARE,MYF(0))) < 0)
goto err;
}
share->mode=open_mode;
errpos= 1;
if (my_pread(kfile,share->state.header.file_version, head_length, 0,
MYF(MY_NABP)))
{
my_errno= HA_ERR_NOT_A_TABLE;
goto err;
}
if (memcmp(share->state.header.file_version, maria_file_magic, 4))
{
DBUG_PRINT("error",("Wrong header in %s",name_buff));
DBUG_DUMP("error_dump", share->state.header.file_version,
head_length);
my_errno=HA_ERR_NOT_A_TABLE;
goto err;
}
share->options= mi_uint2korr(share->state.header.options);
if (share->options &
~(HA_OPTION_PACK_RECORD | HA_OPTION_PACK_KEYS |
HA_OPTION_COMPRESS_RECORD | HA_OPTION_READ_ONLY_DATA |
HA_OPTION_TEMP_COMPRESS_RECORD | HA_OPTION_CHECKSUM |
HA_OPTION_TMP_TABLE | HA_OPTION_DELAY_KEY_WRITE |
HA_OPTION_RELIES_ON_SQL_LAYER | HA_OPTION_NULL_FIELDS |
HA_OPTION_PAGE_CHECKSUM))
{
DBUG_PRINT("error",("wrong options: 0x%lx", share->options));
my_errno=HA_ERR_NEW_FILE;
goto err;
}
if ((share->options & HA_OPTION_RELIES_ON_SQL_LAYER) &&
! (open_flags & HA_OPEN_FROM_SQL_LAYER))
{
DBUG_PRINT("error", ("table cannot be opened from non-sql layer"));
my_errno= HA_ERR_UNSUPPORTED;
goto err;
}
/* Don't call realpath() if the name can't be a link */
if (!strcmp(name_buff, org_name) ||
my_readlink(index_name, org_name, MYF(0)) == -1)
(void) strmov(index_name, org_name);
*strrchr(org_name, FN_EXTCHAR)= '\0';
(void) fn_format(data_name,org_name,"",MARIA_NAME_DEXT,
MY_APPEND_EXT|MY_UNPACK_FILENAME|MY_RESOLVE_SYMLINKS);
info_length=mi_uint2korr(share->state.header.header_length);
base_pos= mi_uint2korr(share->state.header.base_pos);
/*
Allocate space for header information and for data that is too
big to keep on stack
*/
if (!my_multi_malloc(MY_WME,
&disk_cache, info_length+128,
&rec_per_key_part,
(sizeof(*rec_per_key_part) * HA_MAX_POSSIBLE_KEY *
HA_MAX_KEY_SEG),
&nulls_per_key_part,
(sizeof(*nulls_per_key_part) * HA_MAX_POSSIBLE_KEY *
HA_MAX_KEY_SEG),
NullS))
{
my_errno=ENOMEM;
goto err;
}
share_buff.state.rec_per_key_part= rec_per_key_part;
share_buff.state.nulls_per_key_part= nulls_per_key_part;
end_pos=disk_cache+info_length;
errpos= 3;
if (my_pread(kfile, disk_cache, info_length, 0L, MYF(MY_NABP)))
{
my_errno=HA_ERR_CRASHED;
goto err;
}
len=mi_uint2korr(share->state.header.state_info_length);
keys= (uint) share->state.header.keys;
uniques= (uint) share->state.header.uniques;
fulltext_keys= (uint) share->state.header.fulltext_keys;
key_parts= mi_uint2korr(share->state.header.key_parts);
unique_key_parts= mi_uint2korr(share->state.header.unique_key_parts);
if (len != MARIA_STATE_INFO_SIZE)
{
DBUG_PRINT("warning",
("saved_state_info_length: %d state_info_length: %d",
len,MARIA_STATE_INFO_SIZE));
}
share->state_diff_length=len-MARIA_STATE_INFO_SIZE;
_ma_state_info_read(disk_cache, &share->state);
len= mi_uint2korr(share->state.header.base_info_length);
if (len != MARIA_BASE_INFO_SIZE)
{
DBUG_PRINT("warning",("saved_base_info_length: %d base_info_length: %d",
len,MARIA_BASE_INFO_SIZE));
}
disk_pos= _ma_base_info_read(disk_cache + base_pos, &share->base);
share->state.state_length=base_pos;
if (!(open_flags & HA_OPEN_FOR_REPAIR) &&
((share->state.changed & STATE_CRASHED) ||
((open_flags & HA_OPEN_ABORT_IF_CRASHED) &&
(my_disable_locking && share->state.open_count))))
{
DBUG_PRINT("error",("Table is marked as crashed. open_flags: %u "
"changed: %u open_count: %u !locking: %d",
open_flags, share->state.changed,
share->state.open_count, my_disable_locking));
my_errno=((share->state.changed & STATE_CRASHED_ON_REPAIR) ?
HA_ERR_CRASHED_ON_REPAIR : HA_ERR_CRASHED_ON_USAGE);
goto err;
}
/*
We can ignore testing uuid if STATE_NOT_MOVABLE is set, as in this
case the uuid will be set in _ma_mark_file_changed()
*/
if ((share->state.changed & STATE_NOT_MOVABLE) &&
share->base.born_transactional &&
((!(open_flags & HA_OPEN_IGNORE_MOVED_STATE) &&
memcmp(share->base.uuid, maria_uuid, MY_UUID_SIZE)) ||
share->state.create_trid > trnman_get_max_trid()))
{
if (open_flags & HA_OPEN_FOR_REPAIR)
share->state.changed|= STATE_MOVED;
else
{
my_errno= HA_ERR_OLD_FILE;
goto err;
}
}
/* sanity check */
if (share->base.keystart > 65535 || share->base.rec_reflength > 8)
{
my_errno=HA_ERR_CRASHED;
goto err;
}
key_parts+=fulltext_keys*FT_SEGS;
if (share->base.max_key_length > maria_max_key_length() ||
keys > MARIA_MAX_KEY || key_parts > MARIA_MAX_KEY * HA_MAX_KEY_SEG)
{
DBUG_PRINT("error",("Wrong key info: Max_key_length: %d keys: %d key_parts: %d", share->base.max_key_length, keys, key_parts));
my_errno=HA_ERR_UNSUPPORTED;
goto err;
}
/* Ensure we have space in the key buffer for transaction id's */
if (share->base.born_transactional)
share->base.max_key_length= ALIGN_SIZE(share->base.max_key_length +
MARIA_MAX_PACK_TRANSID_SIZE);
/*
If page cache is not initialized, then assume we will create the
page_cache after the table is opened!
This is only used by maria_check to allow it to check/repair tables
with different block sizes.
*/
if (share->base.block_size != maria_block_size &&
share_buff.pagecache->inited != 0)
{
DBUG_PRINT("error", ("Wrong block size %u; Expected %u",
(uint) share->base.block_size,
(uint) maria_block_size));
my_errno=HA_ERR_UNSUPPORTED;
goto err;
}
/* Correct max_file_length based on length of sizeof(off_t) */
max_data_file_length=
(share->options & (HA_OPTION_PACK_RECORD | HA_OPTION_COMPRESS_RECORD)) ?
(((ulonglong) 1 << (share->base.rec_reflength*8))-1) :
(_ma_safe_mul(share->base.pack_reclength,
(ulonglong) 1 << (share->base.rec_reflength*8))-1);
max_key_file_length=
_ma_safe_mul(maria_block_size,
((ulonglong) 1 << (share->base.key_reflength*8))-1);
#if SIZEOF_OFF_T == 4
set_if_smaller(max_data_file_length, INT_MAX32);
set_if_smaller(max_key_file_length, INT_MAX32);
#endif
share->base.max_data_file_length=(my_off_t) max_data_file_length;
share->base.max_key_file_length=(my_off_t) max_key_file_length;
if (share->options & HA_OPTION_COMPRESS_RECORD)
share->base.max_key_length+=2; /* For safety */
/* Add space for node pointer */
share->base.max_key_length+= share->base.key_reflength;
share->unique_file_name.length= strlen(name_buff);
share->index_file_name.length= strlen(index_name);
share->data_file_name.length= strlen(data_name);
share->open_file_name.length= strlen(name);
if (!my_multi_malloc(MY_WME,
&share,sizeof(*share),
&share->state.rec_per_key_part,
sizeof(double) * key_parts,
&share->state.nulls_per_key_part,
sizeof(long)* key_parts,
&share->keyinfo,keys*sizeof(MARIA_KEYDEF),
&share->uniqueinfo,uniques*sizeof(MARIA_UNIQUEDEF),
&share->keyparts,
(key_parts+unique_key_parts+keys+uniques) *
sizeof(HA_KEYSEG),
&share->columndef,
(share->base.fields+1)*sizeof(MARIA_COLUMNDEF),
&share->column_nr, share->base.fields*sizeof(uint16),
&share->blobs,sizeof(MARIA_BLOB)*share->base.blobs,
&share->unique_file_name.str,
share->unique_file_name.length+1,
&share->index_file_name.str,
share->index_file_name.length+1,
&share->data_file_name.str,
share->data_file_name.length+1,
&share->open_file_name.str,
share->open_file_name.length+1,
&share->state.key_root,keys*sizeof(my_off_t),
&share->mmap_lock,sizeof(rw_lock_t),
NullS))
goto err;
errpos= 4;
*share=share_buff;
memcpy((char*) share->state.rec_per_key_part,
(char*) rec_per_key_part, sizeof(double)*key_parts);
memcpy((char*) share->state.nulls_per_key_part,
(char*) nulls_per_key_part, sizeof(long)*key_parts);
memcpy((char*) share->state.key_root,
(char*) key_root, sizeof(my_off_t)*keys);
strmov(share->unique_file_name.str, name_buff);
strmov(share->index_file_name.str, index_name);
strmov(share->data_file_name.str, data_name);
strmov(share->open_file_name.str, name);
share->block_size= share->base.block_size; /* Convenience */
share->max_index_block_size= share->block_size - KEYPAGE_CHECKSUM_SIZE;
{
HA_KEYSEG *pos=share->keyparts;
uint32 ftkey_nr= 1;
for (i=0 ; i < keys ; i++)
{
share->keyinfo[i].share= share;
disk_pos=_ma_keydef_read(disk_pos, &share->keyinfo[i]);
share->keyinfo[i].key_nr= i;
disk_pos_assert(disk_pos + share->keyinfo[i].keysegs * HA_KEYSEG_SIZE,
end_pos);
if (share->keyinfo[i].key_alg == HA_KEY_ALG_RTREE)
share->have_rtree= 1;
share->keyinfo[i].seg=pos;
for (j=0 ; j < share->keyinfo[i].keysegs; j++,pos++)
{
disk_pos=_ma_keyseg_read(disk_pos, pos);
if (pos->type == HA_KEYTYPE_TEXT ||
pos->type == HA_KEYTYPE_VARTEXT1 ||
pos->type == HA_KEYTYPE_VARTEXT2)
{
if (!pos->language)
pos->charset=default_charset_info;
else if (!(pos->charset= get_charset(pos->language, MYF(MY_WME))))
{
my_errno=HA_ERR_UNKNOWN_CHARSET;
goto err;
}
}
else if (pos->type == HA_KEYTYPE_BINARY)
pos->charset= &my_charset_bin;
}
if (share->keyinfo[i].flag & HA_SPATIAL)
{
#ifdef HAVE_SPATIAL
uint sp_segs=SPDIMS*2;
share->keyinfo[i].seg=pos-sp_segs;
share->keyinfo[i].keysegs--;
versioning= 0;
#else
my_errno=HA_ERR_UNSUPPORTED;
goto err;
#endif
}
else if (share->keyinfo[i].flag & HA_FULLTEXT)
{
versioning= 0;
DBUG_ASSERT(fulltext_keys);
{
uint k;
share->keyinfo[i].seg=pos;
for (k=0; k < FT_SEGS; k++)
{
*pos= ft_keysegs[k];
pos[0].language= pos[-1].language;
if (!(pos[0].charset= pos[-1].charset))
{
my_errno=HA_ERR_CRASHED;
goto err;
}
pos++;
}
}
if (!share->ft2_keyinfo.seg)
{
memcpy(&share->ft2_keyinfo, &share->keyinfo[i],
sizeof(MARIA_KEYDEF));
share->ft2_keyinfo.keysegs=1;
share->ft2_keyinfo.flag=0;
share->ft2_keyinfo.keylength=
share->ft2_keyinfo.minlength=
share->ft2_keyinfo.maxlength=HA_FT_WLEN+share->base.rec_reflength;
share->ft2_keyinfo.seg=pos-1;
share->ft2_keyinfo.end=pos;
setup_key_functions(& share->ft2_keyinfo);
}
share->keyinfo[i].ftkey_nr= ftkey_nr++;
}
setup_key_functions(share->keyinfo+i);
share->keyinfo[i].end=pos;
pos->type=HA_KEYTYPE_END; /* End */
pos->length=share->base.rec_reflength;
pos->null_bit=0;
pos->flag=0; /* For purify */
pos++;
}
for (i=0 ; i < uniques ; i++)
{
disk_pos=_ma_uniquedef_read(disk_pos, &share->uniqueinfo[i]);
disk_pos_assert(disk_pos + share->uniqueinfo[i].keysegs *
HA_KEYSEG_SIZE, end_pos);
share->uniqueinfo[i].seg=pos;
for (j=0 ; j < share->uniqueinfo[i].keysegs; j++,pos++)
{
disk_pos=_ma_keyseg_read(disk_pos, pos);
if (pos->type == HA_KEYTYPE_TEXT ||
pos->type == HA_KEYTYPE_VARTEXT1 ||
pos->type == HA_KEYTYPE_VARTEXT2)
{
if (!pos->language)
pos->charset=default_charset_info;
else if (!(pos->charset= get_charset(pos->language, MYF(MY_WME))))
{
my_errno=HA_ERR_UNKNOWN_CHARSET;
goto err;
}
}
}
share->uniqueinfo[i].end=pos;
pos->type=HA_KEYTYPE_END; /* End */
pos->null_bit=0;
pos->flag=0;
pos++;
}
share->ftkeys= ftkey_nr;
}
share->data_file_type= share->state.header.data_file_type;
share->base_length= (BASE_ROW_HEADER_SIZE +
share->base.is_nulls_extended +
share->base.null_bytes +
share->base.pack_bytes +
test(share->options & HA_OPTION_CHECKSUM));
share->keypage_header= ((share->base.born_transactional ?
LSN_STORE_SIZE + TRANSID_SIZE :
0) + KEYPAGE_KEYID_SIZE + KEYPAGE_FLAG_SIZE +
KEYPAGE_USED_SIZE);
share->kfile.file= kfile;
if (open_flags & HA_OPEN_COPY)
{
/*
this instance will be a temporary one used just to create a data
file for REPAIR. Don't do logging. This base information will not go
to disk.
*/
share->base.born_transactional= FALSE;
}
if (share->base.born_transactional)
{
share->page_type= PAGECACHE_LSN_PAGE;
if (share->state.create_rename_lsn == LSN_NEEDS_NEW_STATE_LSNS)
{
/*
Was repaired with maria_chk, maybe later maria_pack-ed. Some sort of
import into the server. It starts its existence (from the point of
view of the server, including server's recovery) now.
*/
if (((open_flags & HA_OPEN_FROM_SQL_LAYER) &&
(share->state.changed & STATE_NOT_MOVABLE)) || maria_in_recovery)
_ma_update_state_lsns_sub(share, LSN_IMPOSSIBLE,
trnman_get_min_safe_trid(), TRUE, TRUE);
}
else if ((!LSN_VALID(share->state.create_rename_lsn) ||
!LSN_VALID(share->state.is_of_horizon) ||
(cmp_translog_addr(share->state.create_rename_lsn,
share->state.is_of_horizon) > 0) ||
!LSN_VALID(share->state.skip_redo_lsn) ||
(cmp_translog_addr(share->state.create_rename_lsn,
share->state.skip_redo_lsn) > 0)) &&
!(open_flags & HA_OPEN_FOR_REPAIR))
{
/*
If in Recovery, it will not work. If LSN is invalid and not
LSN_NEEDS_NEW_STATE_LSNS, header must be corrupted.
In both cases, must repair.
*/
my_errno=((share->state.changed & STATE_CRASHED_ON_REPAIR) ?
HA_ERR_CRASHED_ON_REPAIR : HA_ERR_CRASHED_ON_USAGE);
goto err;
}
}
else
share->page_type= PAGECACHE_PLAIN_PAGE;
share->now_transactional= share->base.born_transactional;
/* Use pack_reclength as we don't want to modify base.pack_recklength */
if (share->state.header.org_data_file_type == DYNAMIC_RECORD)
{
/* add bits used to pack data to pack_reclength for faster allocation */
share->base.pack_reclength+= share->base.pack_bytes;
share->base.extra_rec_buff_size=
(ALIGN_SIZE(MARIA_MAX_DYN_BLOCK_HEADER) + MARIA_SPLIT_LENGTH +
MARIA_REC_BUFF_OFFSET);
}
if (share->data_file_type == COMPRESSED_RECORD)
{
/* Need some extra bytes for decode_bytes */
share->base.extra_rec_buff_size+= 7;
}
share->base.default_rec_buff_size= max(share->base.pack_reclength +
share->base.extra_rec_buff_size,
share->base.max_key_length);
disk_pos_assert(disk_pos + share->base.fields *MARIA_COLUMNDEF_SIZE,
end_pos);
for (i= j= 0 ; i < share->base.fields ; i++)
{
disk_pos=_ma_columndef_read(disk_pos,&share->columndef[i]);
share->columndef[i].pack_type=0;
share->columndef[i].huff_tree=0;
if (share->columndef[i].type == FIELD_BLOB)
{
share->blobs[j].pack_length=
share->columndef[i].length-portable_sizeof_char_ptr;
share->blobs[j].offset= share->columndef[i].offset;
j++;
}
}
share->columndef[i].type= FIELD_LAST; /* End marker */
disk_pos= _ma_column_nr_read(disk_pos, share->column_nr,
share->base.fields);
if ((share->data_file_type == BLOCK_RECORD ||
share->data_file_type == COMPRESSED_RECORD))
{
if (_ma_open_datafile(&info, share, name, -1))
goto err;
data_file= info.dfile.file;
}
errpos= 5;
if (open_flags & HA_OPEN_DELAY_KEY_WRITE)
share->options|= HA_OPTION_DELAY_KEY_WRITE;
if (mode == O_RDONLY)
share->options|= HA_OPTION_READ_ONLY_DATA;
share->is_log_table= FALSE;
if (open_flags & HA_OPEN_TMP_TABLE)
{
share->options|= HA_OPTION_TMP_TABLE;
share->temporary= share->delay_key_write= 1;
share->write_flag=MYF(MY_NABP);
share->w_locks++; /* We don't have to update status */
share->tot_locks++;
}
_ma_set_index_pagecache_callbacks(&share->kfile, share);
share->this_process=(ulong) getpid();
#ifdef EXTERNAL_LOCKING
share->last_process= share->state.process;
#endif
share->base.key_parts=key_parts;
share->base.all_key_parts=key_parts+unique_key_parts;
if (!(share->last_version=share->state.version))
share->last_version=1; /* Safety */
share->rec_reflength=share->base.rec_reflength; /* May be changed */
share->base.margin_key_file_length=(share->base.max_key_file_length -
(keys ? MARIA_INDEX_BLOCK_MARGIN *
share->block_size * keys : 0));
share->block_size= share->base.block_size;
my_free(disk_cache, MYF(0));
_ma_setup_functions(share);
if ((*share->once_init)(share, info.dfile.file))
goto err;
if (share->now_transactional)
{
/* Setup initial state that is visible for all */
MARIA_STATE_HISTORY_CLOSED *history;
if ((history= (MARIA_STATE_HISTORY_CLOSED *)
hash_search(&maria_stored_state,
(uchar*) &share->state.create_rename_lsn, 0)))
{
/*
Move history from hash to share. This is safe to do as we
don't have a lock on share->intern_lock.
*/
share->state_history=
_ma_remove_not_visible_states(history->state_history, 0, 0);
history->state_history= 0;
(void) hash_delete(&maria_stored_state, (uchar*) history);
}
else
{
/* Table is not part of any active transaction; Create new history */
if (!(share->state_history= (MARIA_STATE_HISTORY *)
my_malloc(sizeof(*share->state_history), MYF(MY_WME))))
goto err;
share->state_history->trid= 0; /* Visible by all */
share->state_history->state= share->state.state;
share->state_history->next= 0;
}
}
#ifdef THREAD
thr_lock_init(&share->lock);
pthread_mutex_init(&share->intern_lock, MY_MUTEX_INIT_FAST);
pthread_mutex_init(&share->key_del_lock, MY_MUTEX_INIT_FAST);
pthread_cond_init(&share->key_del_cond, 0);
pthread_mutex_init(&share->close_lock, MY_MUTEX_INIT_FAST);
for (i=0; i<keys; i++)
VOID(my_rwlock_init(&share->keyinfo[i].root_lock, NULL));
VOID(my_rwlock_init(&share->mmap_lock, NULL));
share->row_is_visible= _ma_row_visible_always;
share->lock.get_status= _ma_reset_update_flag;
if (!thr_lock_inited)
{
/* Probably a single threaded program; Don't use concurrent inserts */
maria_concurrent_insert=0;
}
else if (maria_concurrent_insert)
{
share->non_transactional_concurrent_insert=
((share->options & (HA_OPTION_READ_ONLY_DATA | HA_OPTION_TMP_TABLE |
HA_OPTION_COMPRESS_RECORD |
HA_OPTION_TEMP_COMPRESS_RECORD)) ||
(open_flags & HA_OPEN_TMP_TABLE) ||
share->data_file_type == BLOCK_RECORD ||
share->have_rtree) ? 0 : 1;
if (share->non_transactional_concurrent_insert ||
(!share->temporary && share->now_transactional && versioning))
{
share->lock_key_trees= 1;
if (share->data_file_type == BLOCK_RECORD)
{
DBUG_ASSERT(share->now_transactional);
share->have_versioning= 1;
share->row_is_visible= _ma_row_visible_transactional_table;
share->lock.get_status= _ma_block_get_status;
share->lock.update_status= _ma_block_update_status;
share->lock.check_status= _ma_block_check_status;
/*
We can for the moment only allow multiple concurrent inserts
only if there is no auto-increment key. To lift this restriction
we have to:
- Extend statement base replication to support auto-increment
intervalls.
- Fix that we allocate auto-increment in intervals and that
it's properly reset if the interval was not used
*/
share->lock.allow_multiple_concurrent_insert=
share->base.auto_key == 0;
share->lock_restore_status= 0;
}
else
{
share->row_is_visible= _ma_row_visible_non_transactional_table;
share->lock.get_status= _ma_get_status;
share->lock.copy_status= _ma_copy_status;
share->lock.update_status= _ma_update_status;
share->lock.restore_status= _ma_restore_status;
share->lock.check_status= _ma_check_status;
share->lock_restore_status= _ma_restore_status;
}
}
else if (share->now_transactional)
{
DBUG_ASSERT(share->data_file_type == BLOCK_RECORD);
share->lock.get_status= _ma_block_get_status_no_versioning;
}
}
#endif
/*
Memory mapping can only be requested after initializing intern_lock.
*/
if (open_flags & HA_OPEN_MMAP)
{
info.s= share;
maria_extra(&info, HA_EXTRA_MMAP, 0);
}
}
else
{
share= old_info->s;
if (share->data_file_type == BLOCK_RECORD)
data_file= share->bitmap.file.file; /* Only opened once */
}
if (!(m_info= maria_clone_internal(share, name, mode, data_file)))
goto err;
if (maria_is_crashed(m_info))
DBUG_PRINT("warning", ("table is crashed: changed: %u",
share->state.changed));
pthread_mutex_unlock(&THR_LOCK_maria);
DBUG_RETURN(m_info);
err:
DBUG_PRINT("error", ("error: %d errpos: %d", my_errno, errpos));
save_errno=my_errno ? my_errno : HA_ERR_END_OF_FILE;
if ((save_errno == HA_ERR_CRASHED) ||
(save_errno == HA_ERR_CRASHED_ON_USAGE) ||
(save_errno == HA_ERR_CRASHED_ON_REPAIR))
{
LEX_STRING tmp_name;
tmp_name.str= (char*) name;
tmp_name.length= strlen(name);
_ma_report_error(save_errno, &tmp_name);
}
if (save_errno == HA_ERR_OLD_FILE) /* uuid is different ? */
save_errno= HA_ERR_CRASHED_ON_USAGE; /* the code to trigger auto-repair */
switch (errpos) {
case 5:
if (data_file >= 0)
VOID(my_close(data_file, MYF(0)));
if (old_info)
break; /* Don't remove open table */
(*share->once_end)(share);
/* fall through */
case 4:
my_free(share,MYF(0));
/* fall through */
case 3:
my_free(disk_cache, MYF(0));
/* fall through */
case 1:
VOID(my_close(kfile,MYF(0)));
/* fall through */
case 0:
default:
break;
}
pthread_mutex_unlock(&THR_LOCK_maria);
my_errno= save_errno;
DBUG_RETURN (NULL);
} /* maria_open */
/*
Reallocate a buffer, if the current buffer is not large enough
*/
my_bool _ma_alloc_buffer(uchar **old_addr, size_t *old_size,
size_t new_size)
{
if (*old_size < new_size)
{
uchar *addr;
if (!(addr= (uchar*) my_realloc(*old_addr, new_size,
MYF(MY_ALLOW_ZERO_PTR))))
return 1;
*old_addr= addr;
*old_size= new_size;
}
return 0;
}
ulonglong _ma_safe_mul(ulonglong a, ulonglong b)
{
ulonglong max_val= ~ (ulonglong) 0; /* my_off_t is unsigned */
if (!a || max_val / a < b)
return max_val;
return a*b;
}
/* Set up functions in structs */
void _ma_setup_functions(register MARIA_SHARE *share)
{
share->once_init= maria_once_init_dummy;
share->once_end= maria_once_end_dummy;
share->init= maria_scan_init_dummy;
share->end= maria_scan_end_dummy;
share->scan_init= maria_scan_init_dummy;/* Compat. dummy function */
share->scan_end= maria_scan_end_dummy;/* Compat. dummy function */
share->scan_remember_pos= _ma_def_scan_remember_pos;
share->scan_restore_pos= _ma_def_scan_restore_pos;
share->write_record_init= _ma_write_init_default;
share->write_record_abort= _ma_write_abort_default;
share->keypos_to_recpos= _ma_transparent_recpos;
share->recpos_to_keypos= _ma_transparent_recpos;
switch (share->data_file_type) {
case COMPRESSED_RECORD:
share->read_record= _ma_read_pack_record;
share->scan= _ma_read_rnd_pack_record;
share->once_init= _ma_once_init_pack_row;
share->once_end= _ma_once_end_pack_row;
/*
Calculate checksum according to data in the original, not compressed,
row.
*/
if (share->state.header.org_data_file_type == STATIC_RECORD &&
! (share->options & HA_OPTION_NULL_FIELDS))
share->calc_checksum= _ma_static_checksum;
else
share->calc_checksum= _ma_checksum;
share->calc_write_checksum= share->calc_checksum;
break;
case DYNAMIC_RECORD:
share->read_record= _ma_read_dynamic_record;
share->scan= _ma_read_rnd_dynamic_record;
share->delete_record= _ma_delete_dynamic_record;
share->compare_record= _ma_cmp_dynamic_record;
share->compare_unique= _ma_cmp_dynamic_unique;
share->calc_checksum= share->calc_write_checksum= _ma_checksum;
if (share->base.blobs)
{
share->update_record= _ma_update_blob_record;
share->write_record= _ma_write_blob_record;
}
else
{
share->write_record= _ma_write_dynamic_record;
share->update_record= _ma_update_dynamic_record;
}
break;
case STATIC_RECORD:
share->read_record= _ma_read_static_record;
share->scan= _ma_read_rnd_static_record;
share->delete_record= _ma_delete_static_record;
share->compare_record= _ma_cmp_static_record;
share->update_record= _ma_update_static_record;
share->write_record= _ma_write_static_record;
share->compare_unique= _ma_cmp_static_unique;
share->keypos_to_recpos= _ma_static_keypos_to_recpos;
share->recpos_to_keypos= _ma_static_recpos_to_keypos;
if (share->state.header.org_data_file_type == STATIC_RECORD &&
! (share->options & HA_OPTION_NULL_FIELDS))
share->calc_checksum= _ma_static_checksum;
else
share->calc_checksum= _ma_checksum;
break;
case BLOCK_RECORD:
share->once_init= _ma_once_init_block_record;
share->once_end= _ma_once_end_block_record;
share->init= _ma_init_block_record;
share->end= _ma_end_block_record;
share->write_record_init= _ma_write_init_block_record;
share->write_record_abort= _ma_write_abort_block_record;
share->scan_init= _ma_scan_init_block_record;
share->scan_end= _ma_scan_end_block_record;
share->scan= _ma_scan_block_record;
share->scan_remember_pos= _ma_scan_remember_block_record;
share->scan_restore_pos= _ma_scan_restore_block_record;
share->read_record= _ma_read_block_record;
share->delete_record= _ma_delete_block_record;
share->compare_record= _ma_compare_block_record;
share->update_record= _ma_update_block_record;
share->write_record= _ma_write_block_record;
share->compare_unique= _ma_cmp_block_unique;
share->calc_checksum= _ma_checksum;
share->keypos_to_recpos= _ma_transaction_keypos_to_recpos;
share->recpos_to_keypos= _ma_transaction_recpos_to_keypos;
/*
write_block_record() will calculate the checksum; Tell maria_write()
that it doesn't have to do this.
*/
share->calc_write_checksum= 0;
break;
}
share->file_read= _ma_nommap_pread;
share->file_write= _ma_nommap_pwrite;
share->calc_check_checksum= share->calc_checksum;
if (!(share->options & HA_OPTION_CHECKSUM) &&
share->data_file_type != COMPRESSED_RECORD)
share->calc_checksum= share->calc_write_checksum= 0;
return;
}
static void setup_key_functions(register MARIA_KEYDEF *keyinfo)
{
if (keyinfo->key_alg == HA_KEY_ALG_RTREE)
{
#ifdef HAVE_RTREE_KEYS
keyinfo->ck_insert = maria_rtree_insert;
keyinfo->ck_delete = maria_rtree_delete;
#else
DBUG_ASSERT(0); /* maria_open should check it never happens */
#endif
}
else
{
keyinfo->ck_insert = _ma_ck_write;
keyinfo->ck_delete = _ma_ck_delete;
}
if (keyinfo->flag & HA_SPATIAL)
keyinfo->make_key= _ma_sp_make_key;
else
keyinfo->make_key= _ma_make_key;
if (keyinfo->flag & HA_BINARY_PACK_KEY)
{ /* Simple prefix compression */
keyinfo->bin_search= _ma_seq_search;
keyinfo->get_key= _ma_get_binary_pack_key;
keyinfo->skip_key= _ma_skip_binary_pack_key;
keyinfo->pack_key= _ma_calc_bin_pack_key_length;
keyinfo->store_key= _ma_store_bin_pack_key;
}
else if (keyinfo->flag & HA_VAR_LENGTH_KEY)
{
keyinfo->get_key= _ma_get_pack_key;
keyinfo->skip_key= _ma_skip_pack_key;
if (keyinfo->seg[0].flag & HA_PACK_KEY)
{ /* Prefix compression */
/*
_ma_prefix_search() compares end-space against ASCII blank (' ').
It cannot be used for character sets, that do not encode the
blank character like ASCII does. UCS2 is an example. All
character sets with a fixed width > 1 or a mimimum width > 1
cannot represent blank like ASCII does. In these cases we have
to use _ma_seq_search() for the search.
*/
if (!keyinfo->seg->charset || use_strnxfrm(keyinfo->seg->charset) ||
(keyinfo->seg->flag & HA_NULL_PART) ||
keyinfo->seg->charset->mbminlen > 1)
keyinfo->bin_search= _ma_seq_search;
else
keyinfo->bin_search= _ma_prefix_search;
keyinfo->pack_key= _ma_calc_var_pack_key_length;
keyinfo->store_key= _ma_store_var_pack_key;
}
else
{
keyinfo->bin_search= _ma_seq_search;
keyinfo->pack_key= _ma_calc_var_key_length; /* Variable length key */
keyinfo->store_key= _ma_store_static_key;
}
}
else
{
keyinfo->bin_search= _ma_bin_search;
keyinfo->get_key= _ma_get_static_key;
keyinfo->skip_key= _ma_skip_static_key;
keyinfo->pack_key= _ma_calc_static_key_length;
keyinfo->store_key= _ma_store_static_key;
}
/* set keyinfo->write_comp_flag */
if (keyinfo->flag & HA_SORT_ALLOWS_SAME)
keyinfo->write_comp_flag=SEARCH_BIGGER; /* Put after same key */
else if (keyinfo->flag & ( HA_NOSAME | HA_FULLTEXT))
{
keyinfo->write_comp_flag= SEARCH_FIND | SEARCH_UPDATE; /* No duplicates */
if (keyinfo->flag & HA_NULL_ARE_EQUAL)
keyinfo->write_comp_flag|= SEARCH_NULL_ARE_EQUAL;
}
else
keyinfo->write_comp_flag= SEARCH_SAME; /* Keys in rec-pos order */
keyinfo->write_comp_flag|= SEARCH_INSERT;
return;
}
/**
@brief Function to save and store the header in the index file (.MYI)
Operates under MARIA_SHARE::intern_lock if requested.
Sets MARIA_SHARE::MARIA_STATE_INFO::is_of_horizon if transactional table.
Then calls _ma_state_info_write_sub().
@param share table
@param pWrite bitmap: if 1 (MA_STATE_INFO_WRITE_DONT_MOVE_OFFSET)
is set my_pwrite() is used otherwise my_write();
if 2 (MA_STATE_INFO_WRITE_FULL_INFO) is set, info
about keys is written (should only be needed
after ALTER TABLE ENABLE/DISABLE KEYS, and
REPAIR/OPTIMIZE); if 4 (MA_STATE_INFO_WRITE_LOCK)
is set, MARIA_SHARE::intern_lock is taken.
@return Operation status
@retval 0 OK
@retval 1 Error
*/
uint _ma_state_info_write(MARIA_SHARE *share, uint pWrite)
{
uint res;
if (share->options & HA_OPTION_READ_ONLY_DATA)
return 0;
if (pWrite & MA_STATE_INFO_WRITE_LOCK)
pthread_mutex_lock(&share->intern_lock);
else if (maria_multi_threaded)
{
safe_mutex_assert_owner(&share->intern_lock);
}
if (share->base.born_transactional && translog_status == TRANSLOG_OK &&
!maria_in_recovery)
{
/*
In a recovery, we want to set is_of_horizon to the LSN of the last
record executed by Recovery, not the current EOF of the log (which
is too new). Recovery does it by itself.
*/
share->state.is_of_horizon= translog_get_horizon();
DBUG_PRINT("info", ("is_of_horizon set to LSN (%lu,0x%lx)",
LSN_IN_PARTS(share->state.is_of_horizon)));
}
res= _ma_state_info_write_sub(share->kfile.file, &share->state, pWrite);
if (pWrite & MA_STATE_INFO_WRITE_LOCK)
pthread_mutex_unlock(&share->intern_lock);
share->changed= 0;
return res;
}
/**
@brief Function to save and store the header in the index file (.MYI).
Shortcut to use instead of _ma_state_info_write() when appropriate.
@param file descriptor of the index file to write
@param state state information to write to the file
@param pWrite bitmap: if 1 (MA_STATE_INFO_WRITE_DONT_MOVE_OFFSET)
is set my_pwrite() is used otherwise my_write();
if 2 (MA_STATE_INFO_WRITE_FULL_INFO) is set, info
about keys is written (should only be needed
after ALTER TABLE ENABLE/DISABLE KEYS, and
REPAIR/OPTIMIZE).
@notes
For transactional multiuser tables, this function is called
with intern_lock & translog_lock or when the last thread who
is using the table is closing it.
Because of the translog_lock we don't need to have a lock on
key_del_lock.
@return Operation status
@retval 0 OK
@retval 1 Error
*/
uint _ma_state_info_write_sub(File file, MARIA_STATE_INFO *state, uint pWrite)
{
uchar buff[MARIA_STATE_INFO_SIZE + MARIA_STATE_EXTRA_SIZE];
uchar *ptr=buff;
uint i, keys= (uint) state->header.keys;
size_t res;
DBUG_ENTER("_ma_state_info_write_sub");
memcpy_fixed(ptr,&state->header,sizeof(state->header));
ptr+=sizeof(state->header);
/* open_count must be first because of _ma_mark_file_changed ! */
mi_int2store(ptr,state->open_count); ptr+= 2;
/* changed must be second, because of _ma_mark_file_crashed */
mi_int2store(ptr,state->changed); ptr+= 2;
/*
If you change the offset of these LSNs, note that some functions do a
direct write of them without going through this function.
*/
lsn_store(ptr, state->create_rename_lsn); ptr+= LSN_STORE_SIZE;
lsn_store(ptr, state->is_of_horizon); ptr+= LSN_STORE_SIZE;
lsn_store(ptr, state->skip_redo_lsn); ptr+= LSN_STORE_SIZE;
mi_rowstore(ptr,state->state.records); ptr+= 8;
mi_rowstore(ptr,state->state.del); ptr+= 8;
mi_rowstore(ptr,state->split); ptr+= 8;
mi_sizestore(ptr,state->dellink); ptr+= 8;
mi_sizestore(ptr,state->first_bitmap_with_space); ptr+= 8;
mi_sizestore(ptr,state->state.key_file_length); ptr+= 8;
mi_sizestore(ptr,state->state.data_file_length); ptr+= 8;
mi_sizestore(ptr,state->state.empty); ptr+= 8;
mi_sizestore(ptr,state->state.key_empty); ptr+= 8;
mi_int8store(ptr,state->auto_increment); ptr+= 8;
mi_int8store(ptr,(ulonglong) state->state.checksum); ptr+= 8;
mi_int8store(ptr,state->create_trid); ptr+= 8;
mi_int4store(ptr,state->status); ptr+= 4;
mi_int4store(ptr,state->update_count); ptr+= 4;
*ptr++= state->sortkey;
*ptr++= 0; /* Reserved */
ptr+= state->state_diff_length;
for (i=0; i < keys; i++)
{
mi_sizestore(ptr,state->key_root[i]); ptr+= 8;
}
mi_sizestore(ptr,state->key_del); ptr+= 8;
if (pWrite & MA_STATE_INFO_WRITE_FULL_INFO) /* From maria_chk */
{
uint key_parts= mi_uint2korr(state->header.key_parts);
mi_int4store(ptr,state->sec_index_changed); ptr+= 4;
mi_int4store(ptr,state->sec_index_used); ptr+= 4;
mi_int4store(ptr,state->version); ptr+= 4;
mi_int8store(ptr,state->key_map); ptr+= 8;
mi_int8store(ptr,(ulonglong) state->create_time); ptr+= 8;
mi_int8store(ptr,(ulonglong) state->recover_time); ptr+= 8;
mi_int8store(ptr,(ulonglong) state->check_time); ptr+= 8;
mi_sizestore(ptr, state->records_at_analyze); ptr+= 8;
/* reserve place for some information per key */
bzero(ptr, keys*4); ptr+= keys*4;
for (i=0 ; i < key_parts ; i++)
{
float8store(ptr, state->rec_per_key_part[i]); ptr+= 8;
mi_int4store(ptr, state->nulls_per_key_part[i]); ptr+= 4;
}
}
res= (pWrite & MA_STATE_INFO_WRITE_DONT_MOVE_OFFSET) ?
my_pwrite(file, buff, (size_t) (ptr-buff), 0L,
MYF(MY_NABP | MY_THREADSAFE)) :
my_write(file, buff, (size_t) (ptr-buff),
MYF(MY_NABP));
DBUG_RETURN(res != 0);
}
static uchar *_ma_state_info_read(uchar *ptr, MARIA_STATE_INFO *state)
{
uint i,keys,key_parts;
memcpy_fixed(&state->header,ptr, sizeof(state->header));
ptr+= sizeof(state->header);
keys= (uint) state->header.keys;
key_parts= mi_uint2korr(state->header.key_parts);
state->open_count = mi_uint2korr(ptr); ptr+= 2;
state->changed= mi_uint2korr(ptr); ptr+= 2;
state->create_rename_lsn= lsn_korr(ptr); ptr+= LSN_STORE_SIZE;
state->is_of_horizon= lsn_korr(ptr); ptr+= LSN_STORE_SIZE;
state->skip_redo_lsn= lsn_korr(ptr); ptr+= LSN_STORE_SIZE;
state->state.records= mi_rowkorr(ptr); ptr+= 8;
state->state.del = mi_rowkorr(ptr); ptr+= 8;
state->split = mi_rowkorr(ptr); ptr+= 8;
state->dellink= mi_sizekorr(ptr); ptr+= 8;
state->first_bitmap_with_space= mi_sizekorr(ptr); ptr+= 8;
state->state.key_file_length = mi_sizekorr(ptr); ptr+= 8;
state->state.data_file_length= mi_sizekorr(ptr); ptr+= 8;
state->state.empty = mi_sizekorr(ptr); ptr+= 8;
state->state.key_empty= mi_sizekorr(ptr); ptr+= 8;
state->auto_increment=mi_uint8korr(ptr); ptr+= 8;
state->state.checksum=(ha_checksum) mi_uint8korr(ptr);ptr+= 8;
state->create_trid= mi_uint8korr(ptr); ptr+= 8;
state->status = mi_uint4korr(ptr); ptr+= 4;
state->update_count=mi_uint4korr(ptr); ptr+= 4;
state->sortkey= (uint) *ptr++;
ptr++; /* reserved */
ptr+= state->state_diff_length;
for (i=0; i < keys; i++)
{
state->key_root[i]= mi_sizekorr(ptr); ptr+= 8;
}
state->key_del= mi_sizekorr(ptr); ptr+= 8;
state->sec_index_changed = mi_uint4korr(ptr); ptr+= 4;
state->sec_index_used = mi_uint4korr(ptr); ptr+= 4;
state->version = mi_uint4korr(ptr); ptr+= 4;
state->key_map = mi_uint8korr(ptr); ptr+= 8;
state->create_time = (time_t) mi_sizekorr(ptr); ptr+= 8;
state->recover_time =(time_t) mi_sizekorr(ptr); ptr+= 8;
state->check_time = (time_t) mi_sizekorr(ptr); ptr+= 8;
state->records_at_analyze= mi_sizekorr(ptr); ptr+= 8;
ptr+= keys * 4; /* Skip reserved bytes */
for (i=0 ; i < key_parts ; i++)
{
float8get(state->rec_per_key_part[i], ptr); ptr+= 8;
state->nulls_per_key_part[i]= mi_uint4korr(ptr); ptr+= 4;
}
return ptr;
}
/**
@brief Fills the state by reading its copy on disk.
Should not be called for transactional tables, as their state on disk is
rarely current and so is often misleading for a reader.
Does nothing in single user mode.
@param file file to read from
@param state state which will be filled
*/
uint _ma_state_info_read_dsk(File file __attribute__((unused)),
MARIA_STATE_INFO *state __attribute__((unused)))
{
#ifdef EXTERNAL_LOCKING
uchar buff[MARIA_STATE_INFO_SIZE + MARIA_STATE_EXTRA_SIZE];
/* trick to detect transactional tables */
DBUG_ASSERT(state->create_rename_lsn == LSN_IMPOSSIBLE);
if (!maria_single_user)
{
if (my_pread(file, buff, state->state_length, 0L, MYF(MY_NABP)))
return 1;
_ma_state_info_read(buff, state);
}
#endif
return 0;
}
/****************************************************************************
** store and read of MARIA_BASE_INFO
****************************************************************************/
uint _ma_base_info_write(File file, MARIA_BASE_INFO *base)
{
uchar buff[MARIA_BASE_INFO_SIZE], *ptr=buff;
bmove(ptr, maria_uuid, MY_UUID_SIZE);
ptr+= MY_UUID_SIZE;
mi_sizestore(ptr,base->keystart); ptr+= 8;
mi_sizestore(ptr,base->max_data_file_length); ptr+= 8;
mi_sizestore(ptr,base->max_key_file_length); ptr+= 8;
mi_rowstore(ptr,base->records); ptr+= 8;
mi_rowstore(ptr,base->reloc); ptr+= 8;
mi_int4store(ptr,base->mean_row_length); ptr+= 4;
mi_int4store(ptr,base->reclength); ptr+= 4;
mi_int4store(ptr,base->pack_reclength); ptr+= 4;
mi_int4store(ptr,base->min_pack_length); ptr+= 4;
mi_int4store(ptr,base->max_pack_length); ptr+= 4;
mi_int4store(ptr,base->min_block_length); ptr+= 4;
mi_int2store(ptr,base->fields); ptr+= 2;
mi_int2store(ptr,base->fixed_not_null_fields); ptr+= 2;
mi_int2store(ptr,base->fixed_not_null_fields_length); ptr+= 2;
mi_int2store(ptr,base->max_field_lengths); ptr+= 2;
mi_int2store(ptr,base->pack_fields); ptr+= 2;
mi_int2store(ptr,base->extra_options) ptr+= 2;
mi_int2store(ptr,base->null_bytes); ptr+= 2;
mi_int2store(ptr,base->original_null_bytes); ptr+= 2;
mi_int2store(ptr,base->field_offsets); ptr+= 2;
mi_int2store(ptr,0); ptr+= 2; /* reserved */
mi_int2store(ptr,base->block_size); ptr+= 2;
*ptr++= base->rec_reflength;
*ptr++= base->key_reflength;
*ptr++= base->keys;
*ptr++= base->auto_key;
*ptr++= base->born_transactional;
*ptr++= 0; /* Reserved */
mi_int2store(ptr,base->pack_bytes); ptr+= 2;
mi_int2store(ptr,base->blobs); ptr+= 2;
mi_int2store(ptr,base->max_key_block_length); ptr+= 2;
mi_int2store(ptr,base->max_key_length); ptr+= 2;
mi_int2store(ptr,base->extra_alloc_bytes); ptr+= 2;
*ptr++= base->extra_alloc_procent;
bzero(ptr,16); ptr+= 16; /* extra */
DBUG_ASSERT((ptr - buff) == MARIA_BASE_INFO_SIZE);
return my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
}
static uchar *_ma_base_info_read(uchar *ptr, MARIA_BASE_INFO *base)
{
bmove(base->uuid, ptr, MY_UUID_SIZE); ptr+= MY_UUID_SIZE;
base->keystart= mi_sizekorr(ptr); ptr+= 8;
base->max_data_file_length= mi_sizekorr(ptr); ptr+= 8;
base->max_key_file_length= mi_sizekorr(ptr); ptr+= 8;
base->records= (ha_rows) mi_sizekorr(ptr); ptr+= 8;
base->reloc= (ha_rows) mi_sizekorr(ptr); ptr+= 8;
base->mean_row_length= mi_uint4korr(ptr); ptr+= 4;
base->reclength= mi_uint4korr(ptr); ptr+= 4;
base->pack_reclength= mi_uint4korr(ptr); ptr+= 4;
base->min_pack_length= mi_uint4korr(ptr); ptr+= 4;
base->max_pack_length= mi_uint4korr(ptr); ptr+= 4;
base->min_block_length= mi_uint4korr(ptr); ptr+= 4;
base->fields= mi_uint2korr(ptr); ptr+= 2;
base->fixed_not_null_fields= mi_uint2korr(ptr); ptr+= 2;
base->fixed_not_null_fields_length= mi_uint2korr(ptr);ptr+= 2;
base->max_field_lengths= mi_uint2korr(ptr); ptr+= 2;
base->pack_fields= mi_uint2korr(ptr); ptr+= 2;
base->extra_options= mi_uint2korr(ptr); ptr+= 2;
base->null_bytes= mi_uint2korr(ptr); ptr+= 2;
base->original_null_bytes= mi_uint2korr(ptr); ptr+= 2;
base->field_offsets= mi_uint2korr(ptr); ptr+= 2;
ptr+= 2;
base->block_size= mi_uint2korr(ptr); ptr+= 2;
base->rec_reflength= *ptr++;
base->key_reflength= *ptr++;
base->keys= *ptr++;
base->auto_key= *ptr++;
base->born_transactional= *ptr++;
ptr++;
base->pack_bytes= mi_uint2korr(ptr); ptr+= 2;
base->blobs= mi_uint2korr(ptr); ptr+= 2;
base->max_key_block_length= mi_uint2korr(ptr); ptr+= 2;
base->max_key_length= mi_uint2korr(ptr); ptr+= 2;
base->extra_alloc_bytes= mi_uint2korr(ptr); ptr+= 2;
base->extra_alloc_procent= *ptr++;
ptr+= 16;
return ptr;
}
/*--------------------------------------------------------------------------
maria_keydef
---------------------------------------------------------------------------*/
my_bool _ma_keydef_write(File file, MARIA_KEYDEF *keydef)
{
uchar buff[MARIA_KEYDEF_SIZE];
uchar *ptr=buff;
*ptr++= (uchar) keydef->keysegs;
*ptr++= keydef->key_alg; /* Rtree or Btree */
mi_int2store(ptr,keydef->flag); ptr+= 2;
mi_int2store(ptr,keydef->block_length); ptr+= 2;
mi_int2store(ptr,keydef->keylength); ptr+= 2;
mi_int2store(ptr,keydef->minlength); ptr+= 2;
mi_int2store(ptr,keydef->maxlength); ptr+= 2;
return my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
}
uchar *_ma_keydef_read(uchar *ptr, MARIA_KEYDEF *keydef)
{
keydef->keysegs = (uint) *ptr++;
keydef->key_alg = *ptr++; /* Rtree or Btree */
keydef->flag = mi_uint2korr(ptr); ptr+= 2;
keydef->block_length = mi_uint2korr(ptr); ptr+= 2;
keydef->keylength = mi_uint2korr(ptr); ptr+= 2;
keydef->minlength = mi_uint2korr(ptr); ptr+= 2;
keydef->maxlength = mi_uint2korr(ptr); ptr+= 2;
keydef->underflow_block_length=keydef->block_length/3;
keydef->version = 0; /* Not saved */
keydef->parser = &ft_default_parser;
keydef->ftkey_nr = 0;
return ptr;
}
/***************************************************************************
** maria_keyseg
***************************************************************************/
my_bool _ma_keyseg_write(File file, const HA_KEYSEG *keyseg)
{
uchar buff[HA_KEYSEG_SIZE];
uchar *ptr=buff;
ulong pos;
*ptr++= keyseg->type;
*ptr++= keyseg->language;
*ptr++= keyseg->null_bit;
*ptr++= keyseg->bit_start;
*ptr++= keyseg->bit_end;
*ptr++= keyseg->bit_length;
mi_int2store(ptr,keyseg->flag); ptr+= 2;
mi_int2store(ptr,keyseg->length); ptr+= 2;
mi_int4store(ptr,keyseg->start); ptr+= 4;
pos= keyseg->null_bit ? keyseg->null_pos : keyseg->bit_pos;
mi_int4store(ptr, pos);
ptr+=4;
return my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
}
uchar *_ma_keyseg_read(uchar *ptr, HA_KEYSEG *keyseg)
{
keyseg->type = *ptr++;
keyseg->language = *ptr++;
keyseg->null_bit = *ptr++;
keyseg->bit_start = *ptr++;
keyseg->bit_end = *ptr++;
keyseg->bit_length = *ptr++;
keyseg->flag = mi_uint2korr(ptr); ptr+= 2;
keyseg->length = mi_uint2korr(ptr); ptr+= 2;
keyseg->start = mi_uint4korr(ptr); ptr+= 4;
keyseg->null_pos = mi_uint4korr(ptr); ptr+= 4;
keyseg->charset=0; /* Will be filled in later */
if (keyseg->null_bit)
keyseg->bit_pos= (uint16)(keyseg->null_pos + (keyseg->null_bit == 7));
else
{
keyseg->bit_pos= (uint16)keyseg->null_pos;
keyseg->null_pos= 0;
}
return ptr;
}
/*--------------------------------------------------------------------------
maria_uniquedef
---------------------------------------------------------------------------*/
my_bool _ma_uniquedef_write(File file, MARIA_UNIQUEDEF *def)
{
uchar buff[MARIA_UNIQUEDEF_SIZE];
uchar *ptr=buff;
mi_int2store(ptr,def->keysegs); ptr+=2;
*ptr++= (uchar) def->key;
*ptr++ = (uchar) def->null_are_equal;
return my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
}
uchar *_ma_uniquedef_read(uchar *ptr, MARIA_UNIQUEDEF *def)
{
def->keysegs = mi_uint2korr(ptr);
def->key = ptr[2];
def->null_are_equal=ptr[3];
return ptr+4; /* 1 extra uchar */
}
/***************************************************************************
** MARIA_COLUMNDEF
***************************************************************************/
my_bool _ma_columndef_write(File file, MARIA_COLUMNDEF *columndef)
{
uchar buff[MARIA_COLUMNDEF_SIZE];
uchar *ptr=buff;
mi_int2store(ptr,(ulong) columndef->column_nr); ptr+= 2;
mi_int2store(ptr,(ulong) columndef->offset); ptr+= 2;
mi_int2store(ptr,columndef->type); ptr+= 2;
mi_int2store(ptr,columndef->length); ptr+= 2;
mi_int2store(ptr,columndef->fill_length); ptr+= 2;
mi_int2store(ptr,columndef->null_pos); ptr+= 2;
mi_int2store(ptr,columndef->empty_pos); ptr+= 2;
(*ptr++)= columndef->null_bit;
(*ptr++)= columndef->empty_bit;
ptr[0]= ptr[1]= ptr[2]= ptr[3]= 0; ptr+= 4; /* For future */
return my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
}
uchar *_ma_columndef_read(uchar *ptr, MARIA_COLUMNDEF *columndef)
{
columndef->column_nr= mi_uint2korr(ptr); ptr+= 2;
columndef->offset= mi_uint2korr(ptr); ptr+= 2;
columndef->type= mi_sint2korr(ptr); ptr+= 2;
columndef->length= mi_uint2korr(ptr); ptr+= 2;
columndef->fill_length= mi_uint2korr(ptr); ptr+= 2;
columndef->null_pos= mi_uint2korr(ptr); ptr+= 2;
columndef->empty_pos= mi_uint2korr(ptr); ptr+= 2;
columndef->null_bit= (uint8) *ptr++;
columndef->empty_bit= (uint8) *ptr++;
ptr+= 4;
return ptr;
}
my_bool _ma_column_nr_write(File file, uint16 *offsets, uint columns)
{
uchar *buff, *ptr, *end;
size_t size= columns*2;
my_bool res;
if (!(buff= (uchar*) my_alloca(size)))
return 1;
for (ptr= buff, end= ptr + size; ptr < end ; ptr+= 2, offsets++)
int2store(ptr, *offsets);
res= my_write(file, buff, size, MYF(MY_NABP)) != 0;
my_afree(buff);
return res;
}
uchar *_ma_column_nr_read(uchar *ptr, uint16 *offsets, uint columns)
{
uchar *end;
size_t size= columns*2;
for (end= ptr + size; ptr < end ; ptr+=2, offsets++)
*offsets= uint2korr(ptr);
return ptr;
}
/**
@brief Set callbacks for data pages
@note
We don't use pagecache_file_init here, as we want to keep the
code readable
*/
void _ma_set_data_pagecache_callbacks(PAGECACHE_FILE *file,
MARIA_SHARE *share)
{
file->callback_data= (uchar*) share;
file->flush_log_callback= &maria_flush_log_for_page_none; /* Do nothing */
if (share->temporary)
{
file->read_callback= &maria_page_crc_check_none;
file->write_callback= &maria_page_filler_set_none;
}
else
{
file->read_callback= &maria_page_crc_check_data;
if (share->options & HA_OPTION_PAGE_CHECKSUM)
file->write_callback= &maria_page_crc_set_normal;
else
file->write_callback= &maria_page_filler_set_normal;
if (share->now_transactional)
file->flush_log_callback= maria_flush_log_for_page;
}
}
/**
@brief Set callbacks for index pages
@note
We don't use pagecache_file_init here, as we want to keep the
code readable
*/
void _ma_set_index_pagecache_callbacks(PAGECACHE_FILE *file,
MARIA_SHARE *share)
{
file->callback_data= (uchar*) share;
file->flush_log_callback= &maria_flush_log_for_page_none; /* Do nothing */
file->write_fail= maria_page_write_failure;
if (share->temporary)
{
file->read_callback= &maria_page_crc_check_none;
file->write_callback= &maria_page_filler_set_none;
}
else
{
file->read_callback= &maria_page_crc_check_index;
if (share->options & HA_OPTION_PAGE_CHECKSUM)
file->write_callback= &maria_page_crc_set_index;
else
file->write_callback= &maria_page_filler_set_normal;
if (share->now_transactional)
file->flush_log_callback= maria_flush_log_for_page;
}
}
/**************************************************************************
Open data file
We can't use dup() here as the data file descriptors need to have different
active seek-positions.
The argument file_to_dup is here for the future if there would on some OS
exist a dup()-like call that would give us two different file descriptors.
*************************************************************************/
int _ma_open_datafile(MARIA_HA *info, MARIA_SHARE *share, const char *org_name,
File file_to_dup __attribute__((unused)))
{
char *data_name= share->data_file_name.str;
char real_data_name[FN_REFLEN];
if (org_name)
{
fn_format(real_data_name, org_name, "", MARIA_NAME_DEXT, 4);
if (my_is_symlink(real_data_name))
{
if (my_realpath(real_data_name, real_data_name, MYF(0)) ||
(*maria_test_invalid_symlink)(real_data_name))
{
my_errno= HA_WRONG_CREATE_OPTION;
return 1;
}
data_name= real_data_name;
}
}
info->dfile.file= share->bitmap.file.file=
my_open(share->data_file_name.str, share->mode | O_SHARE,
MYF(MY_WME));
return info->dfile.file >= 0 ? 0 : 1;
}
int _ma_open_keyfile(MARIA_SHARE *share)
{
/*
Modifications to share->kfile should be under intern_lock to protect
against a concurrent checkpoint.
*/
pthread_mutex_lock(&share->intern_lock);
share->kfile.file= my_open(share->unique_file_name.str,
share->mode | O_SHARE,
MYF(MY_WME));
pthread_mutex_unlock(&share->intern_lock);
return (share->kfile.file < 0);
}
/*
Disable all indexes.
SYNOPSIS
maria_disable_indexes()
info A pointer to the MARIA storage engine MARIA_HA struct.
DESCRIPTION
Disable all indexes.
RETURN
0 ok
*/
int maria_disable_indexes(MARIA_HA *info)
{
MARIA_SHARE *share= info->s;
maria_clear_all_keys_active(share->state.key_map);
return 0;
}
/*
Enable all indexes
SYNOPSIS
maria_enable_indexes()
info A pointer to the MARIA storage engine MARIA_HA struct.
DESCRIPTION
Enable all indexes. The indexes might have been disabled
by maria_disable_index() before.
The function works only if both data and indexes are empty,
otherwise a repair is required.
To be sure, call handler::delete_all_rows() before.
RETURN
0 ok
HA_ERR_CRASHED data or index is non-empty.
*/
int maria_enable_indexes(MARIA_HA *info)
{
int error= 0;
MARIA_SHARE *share= info->s;
DBUG_ENTER("maria_enable_indexes");
if ((share->state.state.data_file_length !=
(share->data_file_type == BLOCK_RECORD ? share->block_size : 0)) ||
(share->state.state.key_file_length != share->base.keystart))
{
DBUG_PRINT("error", ("data_file_length: %lu key_file_length: %lu",
(ulong) share->state.state.data_file_length,
(ulong) share->state.state.key_file_length));
maria_print_error(info->s, HA_ERR_CRASHED);
error= HA_ERR_CRASHED;
}
else
maria_set_all_keys_active(share->state.key_map, share->base.keys);
DBUG_RETURN(error);
}
/*
Test if indexes are disabled.
SYNOPSIS
maria_indexes_are_disabled()
info A pointer to the MARIA storage engine MARIA_HA struct.
DESCRIPTION
Test if indexes are disabled.
RETURN
0 indexes are not disabled
1 all indexes are disabled
2 non-unique indexes are disabled
*/
int maria_indexes_are_disabled(MARIA_HA *info)
{
MARIA_SHARE *share= info->s;
/*
No keys or all are enabled. keys is the number of keys. Left shifted
gives us only one bit set. When decreased by one, gives us all all bits
up to this one set and it gets unset.
*/
if (!share->base.keys ||
(maria_is_all_keys_active(share->state.key_map, share->base.keys)))
return 0;
/* All are disabled */
if (maria_is_any_key_active(share->state.key_map))
return 1;
/*
We have keys. Some enabled, some disabled.
Don't check for any non-unique disabled but return directly 2
*/
return 2;
}
static my_bool maria_scan_init_dummy(MARIA_HA *info __attribute__((unused)))
{
return 0;
}
static void maria_scan_end_dummy(MARIA_HA *info __attribute__((unused)))
{
}
static my_bool maria_once_init_dummy(MARIA_SHARE *share
__attribute__((unused)),
File dfile __attribute__((unused)))
{
return 0;
}
static my_bool maria_once_end_dummy(MARIA_SHARE *share __attribute__((unused)))
{
return 0;
}
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