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mariadb/storage/maria/ha_maria.cc
unknown 791b0aa081 WL#3071 - Maria checkpoint 
* Preparation for having a background checkpoint thread:
frequency of checkpoint taken by that thread is now configurable
by the user: global variable maria_checkpoint_frequency, in seconds,
default 30 (checkpoint every 30th second); 0 means no checkpoints
(and thus no background thread, thus no background flushing, that
will probably only be used for testing).
* Don't take checkpoints in Recovery if it didn't do anything
significant; thus no checkpoint after a clean shutdown/restart. The
only checkpoint which is never skipped is the one at shutdown.
* fix for a test failure (after-merge fix)


include/maria.h:
  new variable
mysql-test/suite/rpl/r/rpl_row_flsh_tbls.result:
  result update
mysql-test/suite/rpl/t/rpl_row_flsh_tbls.test:
  position update (=after merge fix, as this position was already changed
  into 5.1 and not merged here, causing test to fail)
storage/maria/ha_maria.cc:
  Checkpoint's frequency is now configurable by the user:
  global variable maria_checkpoint_frequency. Changing it on the fly
  requires us to shutdown/restart the background checkpoint thread,
  as the loop done in that thread assumes a constant checkpoint
  interval. Default value is 30: a checkpoint every 30 seconds (yes, I
  know, physicists will remind that it should be named "period" then).
  ha_maria now asks for a background checkpoint thread when it starts,
  but this is still overruled (disabled) in ma_checkpoint_init().
storage/maria/ma_checkpoint.c:
  Checkpoint's frequency is now configurable by the user: background thread
  takes a checkpoint every maria_checkpoint_interval-th second.
  If that variable is 0, no checkpoints are taken.
  Note, I will enable the background thread only in a later changeset.
storage/maria/ma_recovery.c:
  Don't take checkpoints at the end of the REDO phase and at the end of
  Recovery if Recovery didn't make anything significant (didn't open
  any tables, didn't rollback any transactions).
  With this, after a clean shutdown, Recovery shouldn't take any
  checkpoint, which makes starting faster (we save a few fsync()s of
  the log and control file).
2007-10-09 10:38:31 +02:00

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/* Copyright (C) 2006,2004 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 */
#ifdef USE_PRAGMA_IMPLEMENTATION
#pragma implementation // gcc: Class implementation
#endif
#define MYSQL_SERVER 1
#include "mysql_priv.h"
#include <mysql/plugin.h>
#include <m_ctype.h>
#include <myisampack.h>
#include <my_bit.h>
#include "ha_maria.h"
#include "trnman_public.h"
C_MODE_START
#include "maria_def.h"
#include "ma_rt_index.h"
#include "ma_blockrec.h"
#include "ma_checkpoint.h"
#include "ma_recovery.h"
C_MODE_END
/*
Note that in future versions, only *transactional* Maria tables can
rollback, so this flag should be up or down conditionally.
*/
#define MARIA_CANNOT_ROLLBACK HA_NO_TRANSACTIONS
#ifdef MARIA_CANNOT_ROLLBACK
#define trans_register_ha(A, B, C) do { /* nothing */ } while(0)
#endif
/**
@todo For now there is no way for a user to set a different value of
maria_recover_options, i.e. auto-check-and-repair is always disabled.
We could enable it. As the auto-repair is initiated when opened from the
SQL layer (open_unireg_entry(), check_and_repair()), it does not happen
when Maria's Recovery internally opens the table to apply log records to
it, which is good. It would happen only after Recovery, if the table is
still corrupted.
*/
ulong maria_recover_options= HA_RECOVER_NONE;
static handlerton *maria_hton;
/* bits in maria_recover_options */
const char *maria_recover_names[]=
{
"DEFAULT", "BACKUP", "FORCE", "QUICK", NullS
};
TYPELIB maria_recover_typelib=
{
array_elements(maria_recover_names) - 1, "",
maria_recover_names, NULL
};
const char *maria_stats_method_names[]=
{
"nulls_unequal", "nulls_equal",
"nulls_ignored", NullS
};
TYPELIB maria_stats_method_typelib=
{
array_elements(maria_stats_method_names) - 1, "",
maria_stats_method_names, NULL
};
static void update_checkpoint_frequency(MYSQL_THD thd,
struct st_mysql_sys_var *var,
void *var_ptr, void *save);
static MYSQL_SYSVAR_ULONG(block_size, maria_block_size,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"Block size to be used for MARIA index pages.", 0, 0,
MARIA_KEY_BLOCK_LENGTH, MARIA_MIN_KEY_BLOCK_LENGTH,
MARIA_MAX_KEY_BLOCK_LENGTH, MARIA_MIN_KEY_BLOCK_LENGTH);
static MYSQL_SYSVAR_ULONG(checkpoint_frequency, maria_checkpoint_frequency,
PLUGIN_VAR_RQCMDARG,
"Frequency of automatic checkpoints, in seconds;"
" 0 means 'no checkpoints'.",
NULL, update_checkpoint_frequency, 30, 0, UINT_MAX, 1);
static MYSQL_SYSVAR_ULONGLONG(max_sort_file_size,
maria_max_temp_length, PLUGIN_VAR_RQCMDARG,
"Don't use the fast sort index method to created index if the "
"temporary file would get bigger than this.",
0, 0, MAX_FILE_SIZE, 0, MAX_FILE_SIZE, 1024*1024);
static MYSQL_THDVAR_ULONG(repair_threads, PLUGIN_VAR_RQCMDARG,
"Number of threads to use when repairing maria tables. The value of 1 "
"disables parallel repair.",
0, 0, 1, 1, ~0L, 1);
static MYSQL_THDVAR_ULONG(sort_buffer_size, PLUGIN_VAR_RQCMDARG,
"The buffer that is allocated when sorting the index when doing a "
"REPAIR or when creating indexes with CREATE INDEX or ALTER TABLE.",
0, 0, 8192*1024, 4, ~0L, 1);
static MYSQL_THDVAR_ENUM(stats_method, PLUGIN_VAR_RQCMDARG,
"Specifies how maria index statistics collection code should threat "
"NULLs. Possible values of name are \"nulls_unequal\", \"nulls_equal\", "
"and \"nulls_ignored\".", 0, 0, 0, &maria_stats_method_typelib);
/*****************************************************************************
** MARIA tables
*****************************************************************************/
static handler *maria_create_handler(handlerton *hton,
TABLE_SHARE * table,
MEM_ROOT *mem_root)
{
return new (mem_root) ha_maria(hton, table);
}
// collect errors printed by maria_check routines
static void _ma_check_print_msg(HA_CHECK *param, const char *msg_type,
const char *fmt, va_list args)
{
THD *thd= (THD *) param->thd;
Protocol *protocol= thd->protocol;
uint length, msg_length;
char msgbuf[MARIA_MAX_MSG_BUF];
char name[NAME_LEN * 2 + 2];
msg_length= my_vsnprintf(msgbuf, sizeof(msgbuf), fmt, args);
msgbuf[sizeof(msgbuf) - 1]= 0; // healthy paranoia
DBUG_PRINT(msg_type, ("message: %s", msgbuf));
if (!thd->vio_ok())
{
sql_print_error(msgbuf);
return;
}
if (param->testflag &
(T_CREATE_MISSING_KEYS | T_SAFE_REPAIR | T_AUTO_REPAIR))
{
my_message(ER_NOT_KEYFILE, msgbuf, MYF(MY_WME));
return;
}
length= (uint) (strxmov(name, param->db_name, ".", param->table_name,
NullS) - name);
/*
TODO: switch from protocol to push_warning here. The main reason we didn't
it yet is parallel repair. Due to following trace:
ma_check_print_msg/push_warning/sql_alloc/my_pthread_getspecific_ptr.
Also we likely need to lock mutex here (in both cases with protocol and
push_warning).
*/
protocol->prepare_for_resend();
protocol->store(name, length, system_charset_info);
protocol->store(param->op_name, system_charset_info);
protocol->store(msg_type, system_charset_info);
protocol->store(msgbuf, msg_length, system_charset_info);
if (protocol->write())
sql_print_error("Failed on my_net_write, writing to stderr instead: %s\n",
msgbuf);
return;
}
/*
Convert TABLE object to Maria key and column definition
SYNOPSIS
table2maria()
table_arg in TABLE object.
keydef_out out Maria key definition.
recinfo_out out Maria column definition.
records_out out Number of fields.
DESCRIPTION
This function will allocate and initialize Maria key and column
definition for further use in ma_create or for a check for underlying
table conformance in merge engine.
RETURN VALUE
0 OK
# error code
*/
int table2maria(TABLE *table_arg, MARIA_KEYDEF **keydef_out,
MARIA_COLUMNDEF **recinfo_out, uint *records_out)
{
uint i, j, recpos, minpos, fieldpos, temp_length, length;
enum ha_base_keytype type= HA_KEYTYPE_BINARY;
uchar *record;
KEY *pos;
MARIA_KEYDEF *keydef;
MARIA_COLUMNDEF *recinfo, *recinfo_pos;
HA_KEYSEG *keyseg;
TABLE_SHARE *share= table_arg->s;
uint options= share->db_options_in_use;
DBUG_ENTER("table2maria");
if (!(my_multi_malloc(MYF(MY_WME),
recinfo_out, (share->fields * 2 + 2) * sizeof(MARIA_COLUMNDEF),
keydef_out, share->keys * sizeof(MARIA_KEYDEF),
&keyseg,
(share->key_parts + share->keys) * sizeof(HA_KEYSEG),
NullS)))
DBUG_RETURN(HA_ERR_OUT_OF_MEM); /* purecov: inspected */
keydef= *keydef_out;
recinfo= *recinfo_out;
pos= table_arg->key_info;
for (i= 0; i < share->keys; i++, pos++)
{
keydef[i].flag= (pos->flags & (HA_NOSAME | HA_FULLTEXT | HA_SPATIAL));
keydef[i].key_alg= pos->algorithm == HA_KEY_ALG_UNDEF ?
(pos->flags & HA_SPATIAL ? HA_KEY_ALG_RTREE : HA_KEY_ALG_BTREE) :
pos->algorithm;
keydef[i].block_length= pos->block_size;
keydef[i].seg= keyseg;
keydef[i].keysegs= pos->key_parts;
for (j= 0; j < pos->key_parts; j++)
{
Field *field= pos->key_part[j].field;
type= field->key_type();
keydef[i].seg[j].flag= pos->key_part[j].key_part_flag;
if (options & HA_OPTION_PACK_KEYS ||
(pos->flags & (HA_PACK_KEY | HA_BINARY_PACK_KEY |
HA_SPACE_PACK_USED)))
{
if (pos->key_part[j].length > 8 &&
(type == HA_KEYTYPE_TEXT ||
type == HA_KEYTYPE_NUM ||
(type == HA_KEYTYPE_BINARY && !field->zero_pack())))
{
/* No blobs here */
if (j == 0)
keydef[i].flag|= HA_PACK_KEY;
if (!(field->flags & ZEROFILL_FLAG) &&
(field->type() == MYSQL_TYPE_STRING ||
field->type() == MYSQL_TYPE_VAR_STRING ||
((int) (pos->key_part[j].length - field->decimals())) >= 4))
keydef[i].seg[j].flag|= HA_SPACE_PACK;
}
else if (j == 0 && (!(pos->flags & HA_NOSAME) || pos->key_length > 16))
keydef[i].flag|= HA_BINARY_PACK_KEY;
}
keydef[i].seg[j].type= (int) type;
keydef[i].seg[j].start= pos->key_part[j].offset;
keydef[i].seg[j].length= pos->key_part[j].length;
keydef[i].seg[j].bit_start= keydef[i].seg[j].bit_end=
keydef[i].seg[j].bit_length= 0;
keydef[i].seg[j].bit_pos= 0;
keydef[i].seg[j].language= field->charset()->number;
if (field->null_ptr)
{
keydef[i].seg[j].null_bit= field->null_bit;
keydef[i].seg[j].null_pos= (uint) (field->null_ptr-
(uchar*) table_arg->record[0]);
}
else
{
keydef[i].seg[j].null_bit= 0;
keydef[i].seg[j].null_pos= 0;
}
if (field->type() == MYSQL_TYPE_BLOB ||
field->type() == MYSQL_TYPE_GEOMETRY)
{
keydef[i].seg[j].flag|= HA_BLOB_PART;
/* save number of bytes used to pack length */
keydef[i].seg[j].bit_start= (uint) (field->pack_length() -
share->blob_ptr_size);
}
else if (field->type() == MYSQL_TYPE_BIT)
{
keydef[i].seg[j].bit_length= ((Field_bit *) field)->bit_len;
keydef[i].seg[j].bit_start= ((Field_bit *) field)->bit_ofs;
keydef[i].seg[j].bit_pos= (uint) (((Field_bit *) field)->bit_ptr -
(uchar*) table_arg->record[0]);
}
}
keyseg+= pos->key_parts;
}
if (table_arg->found_next_number_field)
keydef[share->next_number_index].flag|= HA_AUTO_KEY;
record= table_arg->record[0];
recpos= 0;
recinfo_pos= recinfo;
while (recpos < (uint) share->reclength)
{
Field **field, *found= 0;
minpos= share->reclength;
length= 0;
for (field= table_arg->field; *field; field++)
{
if ((fieldpos= (*field)->offset(record)) >= recpos &&
fieldpos <= minpos)
{
/* skip null fields */
if (!(temp_length= (*field)->pack_length_in_rec()))
continue; /* Skip null-fields */
if (! found || fieldpos < minpos ||
(fieldpos == minpos && temp_length < length))
{
minpos= fieldpos;
found= *field;
length= temp_length;
}
}
}
DBUG_PRINT("loop", ("found: 0x%lx recpos: %d minpos: %d length: %d",
(long) found, recpos, minpos, length));
if (recpos != minpos)
{
/* reserve space for null bits */
bzero((char*) recinfo_pos, sizeof(*recinfo_pos));
recinfo_pos->type= FIELD_NORMAL;
recinfo_pos++->length= (uint16) (minpos - recpos);
}
if (!found)
break;
if (found->flags & BLOB_FLAG)
recinfo_pos->type= FIELD_BLOB;
else if (found->type() == MYSQL_TYPE_VARCHAR)
recinfo_pos->type= FIELD_VARCHAR;
else if (!(options & HA_OPTION_PACK_RECORD) ||
(found->zero_pack() && (found->flags & PRI_KEY_FLAG)))
recinfo_pos->type= FIELD_NORMAL;
else if (found->zero_pack())
recinfo_pos->type= FIELD_SKIP_ZERO;
else
recinfo_pos->type= ((length <= 3 ||
(found->flags & ZEROFILL_FLAG)) ?
FIELD_NORMAL :
found->type() == MYSQL_TYPE_STRING ||
found->type() == MYSQL_TYPE_VAR_STRING ?
FIELD_SKIP_ENDSPACE :
FIELD_SKIP_PRESPACE);
if (found->null_ptr)
{
recinfo_pos->null_bit= found->null_bit;
recinfo_pos->null_pos= (uint) (found->null_ptr -
(uchar*) table_arg->record[0]);
}
else
{
recinfo_pos->null_bit= 0;
recinfo_pos->null_pos= 0;
}
(recinfo_pos++)->length= (uint16) length;
recpos= minpos + length;
DBUG_PRINT("loop", ("length: %d type: %d",
recinfo_pos[-1].length,recinfo_pos[-1].type));
}
*records_out= (uint) (recinfo_pos - recinfo);
DBUG_RETURN(0);
}
/*
Check for underlying table conformance
SYNOPSIS
maria_check_definition()
t1_keyinfo in First table key definition
t1_recinfo in First table record definition
t1_keys in Number of keys in first table
t1_recs in Number of records in first table
t2_keyinfo in Second table key definition
t2_recinfo in Second table record definition
t2_keys in Number of keys in second table
t2_recs in Number of records in second table
strict in Strict check switch
DESCRIPTION
This function compares two Maria definitions. By intention it was done
to compare merge table definition against underlying table definition.
It may also be used to compare dot-frm and MAI definitions of Maria
table as well to compare different Maria table definitions.
For merge table it is not required that number of keys in merge table
must exactly match number of keys in underlying table. When calling this
function for underlying table conformance check, 'strict' flag must be
set to false, and converted merge definition must be passed as t1_*.
Otherwise 'strict' flag must be set to 1 and it is not required to pass
converted dot-frm definition as t1_*.
RETURN VALUE
0 - Equal definitions.
1 - Different definitions.
TODO
- compare FULLTEXT keys;
- compare SPATIAL keys;
- compare FIELD_SKIP_ZERO which is converted to FIELD_NORMAL correctly
(should be corretly detected in table2maria).
*/
int maria_check_definition(MARIA_KEYDEF *t1_keyinfo,
MARIA_COLUMNDEF *t1_recinfo,
uint t1_keys, uint t1_recs,
MARIA_KEYDEF *t2_keyinfo,
MARIA_COLUMNDEF *t2_recinfo,
uint t2_keys, uint t2_recs, bool strict)
{
uint i, j;
DBUG_ENTER("maria_check_definition");
if ((strict ? t1_keys != t2_keys : t1_keys > t2_keys))
{
DBUG_PRINT("error", ("Number of keys differs: t1_keys=%u, t2_keys=%u",
t1_keys, t2_keys));
DBUG_RETURN(1);
}
if (t1_recs != t2_recs)
{
DBUG_PRINT("error", ("Number of recs differs: t1_recs=%u, t2_recs=%u",
t1_recs, t2_recs));
DBUG_RETURN(1);
}
for (i= 0; i < t1_keys; i++)
{
HA_KEYSEG *t1_keysegs= t1_keyinfo[i].seg;
HA_KEYSEG *t2_keysegs= t2_keyinfo[i].seg;
if (t1_keyinfo[i].flag & HA_FULLTEXT && t2_keyinfo[i].flag & HA_FULLTEXT)
continue;
else if (t1_keyinfo[i].flag & HA_FULLTEXT ||
t2_keyinfo[i].flag & HA_FULLTEXT)
{
DBUG_PRINT("error", ("Key %d has different definition", i));
DBUG_PRINT("error", ("t1_fulltext= %d, t2_fulltext=%d",
test(t1_keyinfo[i].flag & HA_FULLTEXT),
test(t2_keyinfo[i].flag & HA_FULLTEXT)));
DBUG_RETURN(1);
}
if (t1_keyinfo[i].flag & HA_SPATIAL && t2_keyinfo[i].flag & HA_SPATIAL)
continue;
else if (t1_keyinfo[i].flag & HA_SPATIAL ||
t2_keyinfo[i].flag & HA_SPATIAL)
{
DBUG_PRINT("error", ("Key %d has different definition", i));
DBUG_PRINT("error", ("t1_spatial= %d, t2_spatial=%d",
test(t1_keyinfo[i].flag & HA_SPATIAL),
test(t2_keyinfo[i].flag & HA_SPATIAL)));
DBUG_RETURN(1);
}
if (t1_keyinfo[i].keysegs != t2_keyinfo[i].keysegs ||
t1_keyinfo[i].key_alg != t2_keyinfo[i].key_alg)
{
DBUG_PRINT("error", ("Key %d has different definition", i));
DBUG_PRINT("error", ("t1_keysegs=%d, t1_key_alg=%d",
t1_keyinfo[i].keysegs, t1_keyinfo[i].key_alg));
DBUG_PRINT("error", ("t2_keysegs=%d, t2_key_alg=%d",
t2_keyinfo[i].keysegs, t2_keyinfo[i].key_alg));
DBUG_RETURN(1);
}
for (j= t1_keyinfo[i].keysegs; j--;)
{
if (t1_keysegs[j].type != t2_keysegs[j].type ||
t1_keysegs[j].language != t2_keysegs[j].language ||
t1_keysegs[j].null_bit != t2_keysegs[j].null_bit ||
t1_keysegs[j].length != t2_keysegs[j].length)
{
DBUG_PRINT("error", ("Key segment %d (key %d) has different "
"definition", j, i));
DBUG_PRINT("error", ("t1_type=%d, t1_language=%d, t1_null_bit=%d, "
"t1_length=%d",
t1_keysegs[j].type, t1_keysegs[j].language,
t1_keysegs[j].null_bit, t1_keysegs[j].length));
DBUG_PRINT("error", ("t2_type=%d, t2_language=%d, t2_null_bit=%d, "
"t2_length=%d",
t2_keysegs[j].type, t2_keysegs[j].language,
t2_keysegs[j].null_bit, t2_keysegs[j].length));
DBUG_RETURN(1);
}
}
}
for (i= 0; i < t1_recs; i++)
{
MARIA_COLUMNDEF *t1_rec= &t1_recinfo[i];
MARIA_COLUMNDEF *t2_rec= &t2_recinfo[i];
/*
FIELD_SKIP_ZERO can be changed to FIELD_NORMAL in maria_create,
see NOTE1 in ma_create.c
*/
if ((t1_rec->type != t2_rec->type &&
!(t1_rec->type == (int) FIELD_SKIP_ZERO &&
t1_rec->length == 1 &&
t2_rec->type == (int) FIELD_NORMAL)) ||
t1_rec->length != t2_rec->length ||
t1_rec->null_bit != t2_rec->null_bit)
{
DBUG_PRINT("error", ("Field %d has different definition", i));
DBUG_PRINT("error", ("t1_type=%d, t1_length=%d, t1_null_bit=%d",
t1_rec->type, t1_rec->length, t1_rec->null_bit));
DBUG_PRINT("error", ("t2_type=%d, t2_length=%d, t2_null_bit=%d",
t2_rec->type, t2_rec->length, t2_rec->null_bit));
DBUG_RETURN(1);
}
}
DBUG_RETURN(0);
}
extern "C" {
volatile int *_ma_killed_ptr(HA_CHECK *param)
{
/* In theory Unsafe conversion, but should be ok for now */
return (int*) &(((THD *) (param->thd))->killed);
}
void _ma_check_print_error(HA_CHECK *param, const char *fmt, ...)
{
va_list args;
DBUG_ENTER("_ma_check_print_error");
param->error_printed |= 1;
param->out_flag |= O_DATA_LOST;
va_start(args, fmt);
_ma_check_print_msg(param, "error", fmt, args);
va_end(args);
DBUG_VOID_RETURN;
}
void _ma_check_print_info(HA_CHECK *param, const char *fmt, ...)
{
va_list args;
DBUG_ENTER("_ma_check_print_info");
va_start(args, fmt);
_ma_check_print_msg(param, "info", fmt, args);
va_end(args);
DBUG_VOID_RETURN;
}
void _ma_check_print_warning(HA_CHECK *param, const char *fmt, ...)
{
va_list args;
DBUG_ENTER("_ma_check_print_warning");
param->warning_printed= 1;
param->out_flag |= O_DATA_LOST;
va_start(args, fmt);
_ma_check_print_msg(param, "warning", fmt, args);
va_end(args);
DBUG_VOID_RETURN;
}
}
ha_maria::ha_maria(handlerton *hton, TABLE_SHARE *table_arg):
handler(hton, table_arg), file(0),
int_table_flags(HA_NULL_IN_KEY | HA_CAN_FULLTEXT | HA_CAN_SQL_HANDLER |
HA_BINLOG_ROW_CAPABLE | HA_BINLOG_STMT_CAPABLE |
HA_DUPLICATE_POS | HA_CAN_INDEX_BLOBS | HA_AUTO_PART_KEY |
HA_FILE_BASED | HA_CAN_GEOMETRY | MARIA_CANNOT_ROLLBACK |
HA_CAN_BIT_FIELD | HA_CAN_RTREEKEYS |
HA_HAS_RECORDS | HA_STATS_RECORDS_IS_EXACT),
can_enable_indexes(1)
{}
handler *ha_maria::clone(MEM_ROOT *mem_root)
{
ha_maria *new_handler= static_cast <ha_maria *>(handler::clone(mem_root));
if (new_handler)
new_handler->file->state= file->state;
return new_handler;
}
static const char *ha_maria_exts[]=
{
MARIA_NAME_IEXT,
MARIA_NAME_DEXT,
NullS
};
const char **ha_maria::bas_ext() const
{
return ha_maria_exts;
}
const char *ha_maria::index_type(uint key_number)
{
return ((table->key_info[key_number].flags & HA_FULLTEXT) ?
"FULLTEXT" :
(table->key_info[key_number].flags & HA_SPATIAL) ?
"SPATIAL" :
(table->key_info[key_number].algorithm == HA_KEY_ALG_RTREE) ?
"RTREE" : "BTREE");
}
double ha_maria::scan_time()
{
if (file->s->data_file_type == BLOCK_RECORD)
return ulonglong2double(stats.data_file_length - file->s->block_size) / max(file->s->block_size / 2, IO_SIZE) + 2;
return handler::scan_time();
}
/*
We need to be able to store at least two keys on an index page as the
splitting algorithms depends on this. (With only one key on a page
we also can't use any compression, which may make the index file much
larger)
We use HA_MAX_KEY_BUFF as this is a stack restriction imposed by the
handler interface.
We also need to reserve place for a record pointer (8) and 3 bytes
per key segment to store the length of the segment + possible null bytes.
These extra bytes are required here so that maria_create() will surely
accept any keys created which the returned key data storage length.
*/
uint ha_maria::max_supported_key_length() const
{
uint tmp= (maria_max_key_length() - 8 - HA_MAX_KEY_SEG*3);
return min(HA_MAX_KEY_BUFF, tmp);
}
#ifdef HAVE_REPLICATION
int ha_maria::net_read_dump(NET * net)
{
int data_fd= file->dfile.file;
int error= 0;
my_seek(data_fd, 0L, MY_SEEK_SET, MYF(MY_WME));
for (;;)
{
ulong packet_len= my_net_read(net);
if (!packet_len)
break; // end of file
if (packet_len == packet_error)
{
sql_print_error("ha_maria::net_read_dump - read error ");
error= -1;
goto err;
}
if (my_write(data_fd, (uchar *) net->read_pos, (uint) packet_len,
MYF(MY_WME | MY_FNABP)))
{
error= errno;
goto err;
}
}
err:
return error;
}
int ha_maria::dump(THD * thd, int fd)
{
MARIA_SHARE *share= file->s;
NET *net= &thd->net;
uint block_size= share->block_size;
my_off_t bytes_to_read= share->state.state.data_file_length;
int data_fd= file->dfile.file;
uchar *buf= (uchar *) my_malloc(block_size, MYF(MY_WME));
if (!buf)
return ENOMEM;
int error= 0;
my_seek(data_fd, 0L, MY_SEEK_SET, MYF(MY_WME));
for (; bytes_to_read > 0;)
{
size_t bytes= my_read(data_fd, buf, block_size, MYF(MY_WME));
if (bytes == MY_FILE_ERROR)
{
error= errno;
goto err;
}
if (fd >= 0)
{
if (my_write(fd, buf, bytes, MYF(MY_WME | MY_FNABP)))
{
error= errno ? errno : EPIPE;
goto err;
}
}
else
{
if (my_net_write(net, buf, bytes))
{
error= errno ? errno : EPIPE;
goto err;
}
}
bytes_to_read -= bytes;
}
if (fd < 0)
{
if (my_net_write(net, (uchar*) "", 0))
error= errno ? errno : EPIPE;
net_flush(net);
}
err:
my_free((uchar*) buf, MYF(0));
return error;
}
#endif /* HAVE_REPLICATION */
/* Name is here without an extension */
int ha_maria::open(const char *name, int mode, uint test_if_locked)
{
MARIA_KEYDEF *keyinfo;
MARIA_COLUMNDEF *recinfo= 0;
uint recs;
uint i;
#ifdef NOT_USED
/*
If the user wants to have memory mapped data files, add an
open_flag. Do not memory map temporary tables because they are
expected to be inserted and thus extended a lot. Memory mapping is
efficient for files that keep their size, but very inefficient for
growing files. Using an open_flag instead of calling ma_extra(...
HA_EXTRA_MMAP ...) after maxs_open() has the advantage that the
mapping is not repeated for every open, but just done on the initial
open, when the MyISAM share is created. Everytime the server
requires to open a new instance of a table it calls this method. We
will always supply HA_OPEN_MMAP for a permanent table. However, the
Maria storage engine will ignore this flag if this is a secondary
open of a table that is in use by other threads already (if the
Maria share exists already).
*/
if (!(test_if_locked & HA_OPEN_TMP_TABLE) && opt_maria_use_mmap)
test_if_locked|= HA_OPEN_MMAP;
#endif
if (!(file= maria_open(name, mode, test_if_locked | HA_OPEN_FROM_SQL_LAYER)))
return (my_errno ? my_errno : -1);
/**
@todo ASK_MONTY
This is a protection for the case of a frm and MAI containing incompatible
table definitions (as in BUG#25908). This was merged from MyISAM.
But it breaks maria.test and ps_maria.test ("incorrect key file") if the
table is BLOCK_RECORD (does it have to do with column reordering done in
ma_create.c ?).
*/
if (!table->s->tmp_table) /* No need to perform a check for tmp table */
{
if ((my_errno= table2maria(table, &keyinfo, &recinfo, &recs)))
{
/* purecov: begin inspected */
DBUG_PRINT("error", ("Failed to convert TABLE object to Maria "
"key and column definition"));
goto err;
/* purecov: end */
}
#ifdef ASK_MONTY
if (maria_check_definition(keyinfo, recinfo, table->s->keys, recs,
file->s->keyinfo, file->s->columndef,
file->s->base.keys, file->s->base.fields, true))
#else
if (0)
#endif
{
/* purecov: begin inspected */
my_errno= HA_ERR_CRASHED;
goto err;
/* purecov: end */
}
}
if (test_if_locked & (HA_OPEN_IGNORE_IF_LOCKED | HA_OPEN_TMP_TABLE))
VOID(maria_extra(file, HA_EXTRA_NO_WAIT_LOCK, 0));
info(HA_STATUS_NO_LOCK | HA_STATUS_VARIABLE | HA_STATUS_CONST);
if (!(test_if_locked & HA_OPEN_WAIT_IF_LOCKED))
VOID(maria_extra(file, HA_EXTRA_WAIT_LOCK, 0));
if ((data_file_type= file->s->data_file_type) != STATIC_RECORD)
int_table_flags |= HA_REC_NOT_IN_SEQ;
if (!file->s->base.born_transactional)
{
/*
INSERT DELAYED cannot work with transactional tables (because it cannot
stand up to "when client gets ok the data is safe on disk": the record
may not even be inserted). In the future, we could enable it back (as a
client doing INSERT DELAYED knows the specificities; but we then should
make sure to regularly commit in the delayed_insert thread).
*/
int_table_flags|= HA_CAN_INSERT_DELAYED;
}
if (file->s->options & (HA_OPTION_CHECKSUM | HA_OPTION_COMPRESS_RECORD))
int_table_flags |= HA_HAS_CHECKSUM;
for (i= 0; i < table->s->keys; i++)
{
plugin_ref parser= table->key_info[i].parser;
if (table->key_info[i].flags & HA_USES_PARSER)
file->s->keyinfo[i].parser=
(struct st_mysql_ftparser *)plugin_decl(parser)->info;
table->key_info[i].block_size= file->s->keyinfo[i].block_length;
}
my_errno= 0;
goto end;
err:
this->close();
end:
/*
Both recinfo and keydef are allocated by my_multi_malloc(), thus only
recinfo must be freed.
*/
if (recinfo)
my_free((uchar*) recinfo, MYF(0));
return my_errno;
}
int ha_maria::close(void)
{
MARIA_HA *tmp= file;
file= 0;
return maria_close(tmp);
}
int ha_maria::write_row(uchar * buf)
{
ha_statistic_increment(&SSV::ha_write_count);
/* If we have a timestamp column, update it to the current time */
if (table->timestamp_field_type & TIMESTAMP_AUTO_SET_ON_INSERT)
table->timestamp_field->set_time();
/*
If we have an auto_increment column and we are writing a changed row
or a new row, then update the auto_increment value in the record.
*/
if (table->next_number_field && buf == table->record[0])
{
int error;
if ((error= update_auto_increment()))
return error;
}
return maria_write(file, buf);
}
int ha_maria::check(THD * thd, HA_CHECK_OPT * check_opt)
{
if (!file)
return HA_ADMIN_INTERNAL_ERROR;
int error;
HA_CHECK param;
MARIA_SHARE *share= file->s;
const char *old_proc_info= thd->proc_info;
thd->proc_info= "Checking table";
maria_chk_init(&param);
param.thd= thd;
param.op_name= "check";
param.db_name= table->s->db.str;
param.table_name= table->alias;
param.testflag= check_opt->flags | T_CHECK | T_SILENT;
param.stats_method= (enum_handler_stats_method)THDVAR(thd,stats_method);
if (!(table->db_stat & HA_READ_ONLY))
param.testflag |= T_STATISTICS;
param.using_global_keycache= 1;
if (!maria_is_crashed(file) &&
(((param.testflag & T_CHECK_ONLY_CHANGED) &&
!(share->state.changed & (STATE_CHANGED | STATE_CRASHED |
STATE_CRASHED_ON_REPAIR)) &&
share->state.open_count == 0) ||
((param.testflag & T_FAST) && (share->state.open_count ==
(uint) (share->global_changed ? 1 :
0)))))
return HA_ADMIN_ALREADY_DONE;
error= maria_chk_status(&param, file); // Not fatal
error= maria_chk_size(&param, file);
if (!error)
error |= maria_chk_del(&param, file, param.testflag);
if (!error)
error= maria_chk_key(&param, file);
if (!error)
{
if ((!(param.testflag & T_QUICK) &&
((share->options &
(HA_OPTION_PACK_RECORD | HA_OPTION_COMPRESS_RECORD)) ||
(param.testflag & (T_EXTEND | T_MEDIUM)))) || maria_is_crashed(file))
{
uint old_testflag= param.testflag;
param.testflag |= T_MEDIUM;
if (!(error= init_io_cache(&param.read_cache, file->dfile.file,
my_default_record_cache_size, READ_CACHE,
share->pack.header_length, 1, MYF(MY_WME))))
{
error= maria_chk_data_link(&param, file, param.testflag & T_EXTEND);
end_io_cache(&(param.read_cache));
}
param.testflag= old_testflag;
}
}
if (!error)
{
if ((share->state.changed & (STATE_CHANGED |
STATE_CRASHED_ON_REPAIR |
STATE_CRASHED | STATE_NOT_ANALYZED)) ||
(param.testflag & T_STATISTICS) || maria_is_crashed(file))
{
file->update |= HA_STATE_CHANGED | HA_STATE_ROW_CHANGED;
pthread_mutex_lock(&share->intern_lock);
share->state.changed &= ~(STATE_CHANGED | STATE_CRASHED |
STATE_CRASHED_ON_REPAIR);
if (!(table->db_stat & HA_READ_ONLY))
error= maria_update_state_info(&param, file, UPDATE_TIME | UPDATE_OPEN_COUNT |
UPDATE_STAT);
pthread_mutex_unlock(&share->intern_lock);
info(HA_STATUS_NO_LOCK | HA_STATUS_TIME | HA_STATUS_VARIABLE |
HA_STATUS_CONST);
}
}
else if (!maria_is_crashed(file) && !thd->killed)
{
maria_mark_crashed(file);
file->update |= HA_STATE_CHANGED | HA_STATE_ROW_CHANGED;
}
thd->proc_info= old_proc_info;
return error ? HA_ADMIN_CORRUPT : HA_ADMIN_OK;
}
/*
Analyze the key distribution in the table
As the table may be only locked for read, we have to take into account that
two threads may do an analyze at the same time!
*/
int ha_maria::analyze(THD *thd, HA_CHECK_OPT * check_opt)
{
int error= 0;
HA_CHECK param;
MARIA_SHARE *share= file->s;
maria_chk_init(&param);
param.thd= thd;
param.op_name= "analyze";
param.db_name= table->s->db.str;
param.table_name= table->alias;
param.testflag= (T_FAST | T_CHECK | T_SILENT | T_STATISTICS |
T_DONT_CHECK_CHECKSUM);
param.using_global_keycache= 1;
param.stats_method= (enum_handler_stats_method)THDVAR(thd,stats_method);
if (!(share->state.changed & STATE_NOT_ANALYZED))
return HA_ADMIN_ALREADY_DONE;
error= maria_chk_key(&param, file);
if (!error)
{
pthread_mutex_lock(&share->intern_lock);
error= maria_update_state_info(&param, file, UPDATE_STAT);
pthread_mutex_unlock(&share->intern_lock);
}
else if (!maria_is_crashed(file) && !thd->killed)
maria_mark_crashed(file);
return error ? HA_ADMIN_CORRUPT : HA_ADMIN_OK;
}
int ha_maria::restore(THD * thd, HA_CHECK_OPT *check_opt)
{
HA_CHECK_OPT tmp_check_opt;
char *backup_dir= thd->lex->backup_dir;
char src_path[FN_REFLEN], dst_path[FN_REFLEN];
char table_name[FN_REFLEN];
int error;
const char *errmsg;
DBUG_ENTER("restore");
VOID(tablename_to_filename(table->s->table_name.str, table_name,
sizeof(table_name)));
if (fn_format_relative_to_data_home(src_path, table_name, backup_dir,
MARIA_NAME_DEXT))
DBUG_RETURN(HA_ADMIN_INVALID);
strxmov(dst_path, table->s->normalized_path.str, MARIA_NAME_DEXT, NullS);
if (my_copy(src_path, dst_path, MYF(MY_WME)))
{
error= HA_ADMIN_FAILED;
errmsg= "Failed in my_copy (Error %d)";
goto err;
}
tmp_check_opt.init();
tmp_check_opt.flags |= T_VERY_SILENT | T_CALC_CHECKSUM | T_QUICK;
DBUG_RETURN(repair(thd, &tmp_check_opt));
err:
{
HA_CHECK param;
maria_chk_init(&param);
param.thd= thd;
param.op_name= "restore";
param.db_name= table->s->db.str;
param.table_name= table->s->table_name.str;
param.testflag= 0;
_ma_check_print_error(&param, errmsg, my_errno);
DBUG_RETURN(error);
}
}
int ha_maria::backup(THD * thd, HA_CHECK_OPT *check_opt)
{
char *backup_dir= thd->lex->backup_dir;
char src_path[FN_REFLEN], dst_path[FN_REFLEN];
char table_name[FN_REFLEN];
int error;
const char *errmsg;
DBUG_ENTER("ha_maria::backup");
VOID(tablename_to_filename(table->s->table_name.str, table_name,
sizeof(table_name)));
if (fn_format_relative_to_data_home(dst_path, table_name, backup_dir,
reg_ext))
{
errmsg= "Failed in fn_format() for .frm file (errno: %d)";
error= HA_ADMIN_INVALID;
goto err;
}
strxmov(src_path, table->s->normalized_path.str, reg_ext, NullS);
if (my_copy(src_path, dst_path,
MYF(MY_WME | MY_HOLD_ORIGINAL_MODES | MY_DONT_OVERWRITE_FILE)))
{
error= HA_ADMIN_FAILED;
errmsg= "Failed copying .frm file (errno: %d)";
goto err;
}
/* Change extension */
if (fn_format_relative_to_data_home(dst_path, table_name, backup_dir,
MARIA_NAME_DEXT))
{
errmsg= "Failed in fn_format() for .MYD file (errno: %d)";
error= HA_ADMIN_INVALID;
goto err;
}
strxmov(src_path, table->s->normalized_path.str, MARIA_NAME_DEXT, NullS);
if (_ma_flush_table_files(file, MARIA_FLUSH_DATA, FLUSH_FORCE_WRITE,
FLUSH_KEEP))
{
error= HA_ADMIN_FAILED;
errmsg= "Failed in flush (Error %d)";
goto err;
}
if (my_copy(src_path, dst_path,
MYF(MY_WME | MY_HOLD_ORIGINAL_MODES | MY_DONT_OVERWRITE_FILE)))
{
errmsg= "Failed copying .MYD file (errno: %d)";
error= HA_ADMIN_FAILED;
goto err;
}
DBUG_RETURN(HA_ADMIN_OK);
err:
{
HA_CHECK param;
maria_chk_init(&param);
param.thd= thd;
param.op_name= "backup";
param.db_name= table->s->db.str;
param.table_name= table->s->table_name.str;
param.testflag= 0;
_ma_check_print_error(&param, errmsg, my_errno);
DBUG_RETURN(error);
}
}
int ha_maria::repair(THD * thd, HA_CHECK_OPT *check_opt)
{
int error;
HA_CHECK param;
ha_rows start_records;
if (!file)
return HA_ADMIN_INTERNAL_ERROR;
maria_chk_init(&param);
param.thd= thd;
param.op_name= "repair";
param.testflag= ((check_opt->flags & ~(T_EXTEND)) |
T_SILENT | T_FORCE_CREATE | T_CALC_CHECKSUM |
(check_opt->flags & T_EXTEND ? T_REP : T_REP_BY_SORT));
param.sort_buffer_length= check_opt->sort_buffer_size;
start_records= file->state->records;
while ((error= repair(thd, param, 0)) && param.retry_repair)
{
param.retry_repair= 0;
if (test_all_bits(param.testflag,
(uint) (T_RETRY_WITHOUT_QUICK | T_QUICK)))
{
param.testflag &= ~T_RETRY_WITHOUT_QUICK;
sql_print_information("Retrying repair of: '%s' without quick",
table->s->path.str);
continue;
}
param.testflag &= ~T_QUICK;
if ((param.testflag & T_REP_BY_SORT))
{
param.testflag= (param.testflag & ~T_REP_BY_SORT) | T_REP;
sql_print_information("Retrying repair of: '%s' with keycache",
table->s->path.str);
continue;
}
break;
}
if (!error && start_records != file->state->records &&
!(check_opt->flags & T_VERY_SILENT))
{
char llbuff[22], llbuff2[22];
sql_print_information("Found %s of %s rows when repairing '%s'",
llstr(file->state->records, llbuff),
llstr(start_records, llbuff2),
table->s->path.str);
}
return error;
}
int ha_maria::optimize(THD * thd, HA_CHECK_OPT *check_opt)
{
int error;
if (!file)
return HA_ADMIN_INTERNAL_ERROR;
HA_CHECK param;
maria_chk_init(&param);
param.thd= thd;
param.op_name= "optimize";
param.testflag= (check_opt->flags | T_SILENT | T_FORCE_CREATE |
T_REP_BY_SORT | T_STATISTICS | T_SORT_INDEX);
param.sort_buffer_length= check_opt->sort_buffer_size;
if ((error= repair(thd, param, 1)) && param.retry_repair)
{
sql_print_warning("Warning: Optimize table got errno %d on %s.%s, retrying",
my_errno, param.db_name, param.table_name);
param.testflag &= ~T_REP_BY_SORT;
error= repair(thd, param, 1);
}
return error;
}
int ha_maria::repair(THD *thd, HA_CHECK &param, bool do_optimize)
{
int error= 0;
uint local_testflag= param.testflag;
bool optimize_done= !do_optimize, statistics_done= 0;
const char *old_proc_info= thd->proc_info;
char fixed_name[FN_REFLEN];
MARIA_SHARE *share= file->s;
ha_rows rows= file->state->records;
DBUG_ENTER("ha_maria::repair");
/*
Normally this method is entered with a properly opened table. If the
repair fails, it can be repeated with more elaborate options. Under
special circumstances it can happen that a repair fails so that it
closed the data file and cannot re-open it. In this case file->dfile
is set to -1. We must not try another repair without an open data
file. (Bug #25289)
*/
if (file->dfile.file == -1)
{
sql_print_information("Retrying repair of: '%s' failed. "
"Please try REPAIR EXTENDED or maria_chk",
table->s->path.str);
DBUG_RETURN(HA_ADMIN_FAILED);
}
param.db_name= table->s->db.str;
param.table_name= table->alias;
param.tmpfile_createflag= O_RDWR | O_TRUNC;
param.using_global_keycache= 1;
param.thd= thd;
param.tmpdir= &mysql_tmpdir_list;
param.out_flag= 0;
strmov(fixed_name, file->s->open_file_name);
// Don't lock tables if we have used LOCK TABLE
if (!thd->locked_tables &&
maria_lock_database(file, table->s->tmp_table ? F_EXTRA_LCK : F_WRLCK))
{
_ma_check_print_error(&param, ER(ER_CANT_LOCK), my_errno);
DBUG_RETURN(HA_ADMIN_FAILED);
}
if (!do_optimize ||
((file->state->del ||
((file->s->data_file_type != BLOCK_RECORD) &&
share->state.split != file->state->records)) &&
(!(param.testflag & T_QUICK) ||
(share->state.changed & (STATE_NOT_OPTIMIZED_KEYS |
STATE_NOT_OPTIMIZED_ROWS)))))
{
ulonglong key_map= ((local_testflag & T_CREATE_MISSING_KEYS) ?
maria_get_mask_all_keys_active(share->base.keys) :
share->state.key_map);
uint testflag= param.testflag;
if (maria_test_if_sort_rep(file, file->state->records, key_map, 0) &&
(local_testflag & T_REP_BY_SORT))
{
local_testflag |= T_STATISTICS;
param.testflag |= T_STATISTICS; // We get this for free
statistics_done= 1;
/* TODO: Remove BLOCK_RECORD test when parallel works with blocks */
if (THDVAR(thd,repair_threads) > 1 &&
file->s->data_file_type != BLOCK_RECORD)
{
char buf[40];
/* TODO: respect maria_repair_threads variable */
my_snprintf(buf, 40, "Repair with %d threads", my_count_bits(key_map));
thd->proc_info= buf;
error= maria_repair_parallel(&param, file, fixed_name,
param.testflag & T_QUICK);
thd->proc_info= "Repair done"; // to reset proc_info, as
// it was pointing to local buffer
}
else
{
thd->proc_info= "Repair by sorting";
error= maria_repair_by_sort(&param, file, fixed_name,
param.testflag & T_QUICK);
}
}
else
{
thd->proc_info= "Repair with keycache";
param.testflag &= ~T_REP_BY_SORT;
error= maria_repair(&param, file, fixed_name, param.testflag & T_QUICK);
}
param.testflag= testflag;
optimize_done= 1;
}
if (!error)
{
if ((local_testflag & T_SORT_INDEX) &&
(share->state.changed & STATE_NOT_SORTED_PAGES))
{
optimize_done= 1;
thd->proc_info= "Sorting index";
error= maria_sort_index(&param, file, fixed_name);
}
if (!statistics_done && (local_testflag & T_STATISTICS))
{
if (share->state.changed & STATE_NOT_ANALYZED)
{
optimize_done= 1;
thd->proc_info= "Analyzing";
error= maria_chk_key(&param, file);
}
else
local_testflag &= ~T_STATISTICS; // Don't update statistics
}
}
thd->proc_info= "Saving state";
pthread_mutex_lock(&share->intern_lock);
if (!error)
{
if ((share->state.changed & STATE_CHANGED) || maria_is_crashed(file))
{
share->state.changed &= ~(STATE_CHANGED | STATE_CRASHED |
STATE_CRASHED_ON_REPAIR);
file->update |= HA_STATE_CHANGED | HA_STATE_ROW_CHANGED;
}
/*
the following 'if', thought conceptually wrong,
is a useful optimization nevertheless.
*/
if (file->state != &file->s->state.state)
file->s->state.state= *file->state;
if (file->s->base.auto_key)
_ma_update_auto_increment_key(&param, file, 1);
if (optimize_done)
error= maria_update_state_info(&param, file,
UPDATE_TIME | UPDATE_OPEN_COUNT |
(local_testflag &
T_STATISTICS ? UPDATE_STAT : 0));
info(HA_STATUS_NO_LOCK | HA_STATUS_TIME | HA_STATUS_VARIABLE |
HA_STATUS_CONST);
if (rows != file->state->records && !(param.testflag & T_VERY_SILENT))
{
char llbuff[22], llbuff2[22];
_ma_check_print_warning(&param, "Number of rows changed from %s to %s",
llstr(rows, llbuff),
llstr(file->state->records, llbuff2));
}
}
else
{
maria_mark_crashed_on_repair(file);
file->update |= HA_STATE_CHANGED | HA_STATE_ROW_CHANGED;
maria_update_state_info(&param, file, 0);
}
pthread_mutex_unlock(&share->intern_lock);
thd->proc_info= old_proc_info;
if (!thd->locked_tables)
{
_ma_reenable_logging_for_table(file->s);
maria_lock_database(file, F_UNLCK);
}
DBUG_RETURN(error ? HA_ADMIN_FAILED :
!optimize_done ? HA_ADMIN_ALREADY_DONE : HA_ADMIN_OK);
}
/*
Assign table indexes to a specific key cache.
*/
int ha_maria::assign_to_keycache(THD * thd, HA_CHECK_OPT *check_opt)
{
PAGECACHE *new_pagecache= check_opt->pagecache;
const char *errmsg= 0;
int error= HA_ADMIN_OK;
ulonglong map;
TABLE_LIST *table_list= table->pos_in_table_list;
DBUG_ENTER("ha_maria::assign_to_keycache");
/* for now, it is disabled */
DBUG_RETURN(HA_ADMIN_NOT_IMPLEMENTED);
table->keys_in_use_for_query.clear_all();
if (table_list->process_index_hints(table))
DBUG_RETURN(HA_ADMIN_FAILED);
map= ~(ulonglong) 0;
if (!table->keys_in_use_for_query.is_clear_all())
/* use all keys if there's no list specified by the user through hints */
map= table->keys_in_use_for_query.to_ulonglong();
if ((error= maria_assign_to_pagecache(file, map, new_pagecache)))
{
char buf[STRING_BUFFER_USUAL_SIZE];
my_snprintf(buf, sizeof(buf),
"Failed to flush to index file (errno: %d)", error);
errmsg= buf;
error= HA_ADMIN_CORRUPT;
}
if (error != HA_ADMIN_OK)
{
/* Send error to user */
HA_CHECK param;
maria_chk_init(&param);
param.thd= thd;
param.op_name= "assign_to_keycache";
param.db_name= table->s->db.str;
param.table_name= table->s->table_name.str;
param.testflag= 0;
_ma_check_print_error(&param, errmsg);
}
DBUG_RETURN(error);
}
/*
Preload pages of the index file for a table into the key cache.
*/
int ha_maria::preload_keys(THD * thd, HA_CHECK_OPT *check_opt)
{
int error;
const char *errmsg;
ulonglong map;
TABLE_LIST *table_list= table->pos_in_table_list;
my_bool ignore_leaves= table_list->ignore_leaves;
char buf[ERRMSGSIZE+20];
DBUG_ENTER("ha_maria::preload_keys");
table->keys_in_use_for_query.clear_all();
if (table_list->process_index_hints(table))
DBUG_RETURN(HA_ADMIN_FAILED);
map= ~(ulonglong) 0;
/* Check validity of the index references */
if (!table->keys_in_use_for_query.is_clear_all())
/* use all keys if there's no list specified by the user through hints */
map= table->keys_in_use_for_query.to_ulonglong();
maria_extra(file, HA_EXTRA_PRELOAD_BUFFER_SIZE,
(void*) &thd->variables.preload_buff_size);
if ((error= maria_preload(file, map, ignore_leaves)))
{
switch (error) {
case HA_ERR_NON_UNIQUE_BLOCK_SIZE:
errmsg= "Indexes use different block sizes";
break;
case HA_ERR_OUT_OF_MEM:
errmsg= "Failed to allocate buffer";
break;
default:
my_snprintf(buf, ERRMSGSIZE,
"Failed to read from index file (errno: %d)", my_errno);
errmsg= buf;
}
error= HA_ADMIN_FAILED;
goto err;
}
DBUG_RETURN(HA_ADMIN_OK);
err:
{
HA_CHECK param;
maria_chk_init(&param);
param.thd= thd;
param.op_name= "preload_keys";
param.db_name= table->s->db.str;
param.table_name= table->s->table_name.str;
param.testflag= 0;
_ma_check_print_error(&param, errmsg);
DBUG_RETURN(error);
}
}
/*
Disable indexes, making it persistent if requested.
SYNOPSIS
disable_indexes()
mode mode of operation:
HA_KEY_SWITCH_NONUNIQ disable all non-unique keys
HA_KEY_SWITCH_ALL disable all keys
HA_KEY_SWITCH_NONUNIQ_SAVE dis. non-uni. and make persistent
HA_KEY_SWITCH_ALL_SAVE dis. all keys and make persistent
IMPLEMENTATION
HA_KEY_SWITCH_NONUNIQ is not implemented.
HA_KEY_SWITCH_ALL_SAVE is not implemented.
RETURN
0 ok
HA_ERR_WRONG_COMMAND mode not implemented.
*/
int ha_maria::disable_indexes(uint mode)
{
int error;
if (mode == HA_KEY_SWITCH_ALL)
{
/* call a storage engine function to switch the key map */
error= maria_disable_indexes(file);
}
else if (mode == HA_KEY_SWITCH_NONUNIQ_SAVE)
{
maria_extra(file, HA_EXTRA_NO_KEYS, 0);
info(HA_STATUS_CONST); // Read new key info
error= 0;
}
else
{
/* mode not implemented */
error= HA_ERR_WRONG_COMMAND;
}
return error;
}
/*
Enable indexes, making it persistent if requested.
SYNOPSIS
enable_indexes()
mode mode of operation:
HA_KEY_SWITCH_NONUNIQ enable all non-unique keys
HA_KEY_SWITCH_ALL enable all keys
HA_KEY_SWITCH_NONUNIQ_SAVE en. non-uni. and make persistent
HA_KEY_SWITCH_ALL_SAVE en. all keys and make persistent
DESCRIPTION
Enable indexes, which might have been disabled by disable_index() before.
The modes without _SAVE work only if both data and indexes are empty,
since the MARIA repair would enable them persistently.
To be sure in these cases, call handler::delete_all_rows() before.
IMPLEMENTATION
HA_KEY_SWITCH_NONUNIQ is not implemented.
HA_KEY_SWITCH_ALL_SAVE is not implemented.
RETURN
0 ok
!=0 Error, among others:
HA_ERR_CRASHED data or index is non-empty. Delete all rows and retry.
HA_ERR_WRONG_COMMAND mode not implemented.
*/
int ha_maria::enable_indexes(uint mode)
{
int error;
if (maria_is_all_keys_active(file->s->state.key_map, file->s->base.keys))
{
/* All indexes are enabled already. */
return 0;
}
if (mode == HA_KEY_SWITCH_ALL)
{
error= maria_enable_indexes(file);
/*
Do not try to repair on error,
as this could make the enabled state persistent,
but mode==HA_KEY_SWITCH_ALL forbids it.
*/
}
else if (mode == HA_KEY_SWITCH_NONUNIQ_SAVE)
{
THD *thd= current_thd;
HA_CHECK param;
const char *save_proc_info= thd->proc_info;
thd->proc_info= "Creating index";
maria_chk_init(&param);
param.op_name= "recreating_index";
param.testflag= (T_SILENT | T_REP_BY_SORT | T_QUICK |
T_CREATE_MISSING_KEYS);
param.myf_rw &= ~MY_WAIT_IF_FULL;
param.sort_buffer_length= THDVAR(thd,sort_buffer_size);
param.stats_method= (enum_handler_stats_method)THDVAR(thd,stats_method);
param.tmpdir= &mysql_tmpdir_list;
if ((error= (repair(thd, param, 0) != HA_ADMIN_OK)) && param.retry_repair)
{
sql_print_warning("Warning: Enabling keys got errno %d on %s.%s, retrying",
my_errno, param.db_name, param.table_name);
/* Repairing by sort failed. Now try standard repair method. */
param.testflag &= ~(T_REP_BY_SORT | T_QUICK);
error= (repair(thd, param, 0) != HA_ADMIN_OK);
/*
If the standard repair succeeded, clear all error messages which
might have been set by the first repair. They can still be seen
with SHOW WARNINGS then.
*/
#ifndef EMBEDDED_LIBRARY
if (!error)
thd->clear_error();
#endif /* EMBEDDED_LIBRARY */
}
info(HA_STATUS_CONST);
thd->proc_info= save_proc_info;
}
else
{
/* mode not implemented */
error= HA_ERR_WRONG_COMMAND;
}
return error;
}
/*
Test if indexes are disabled.
SYNOPSIS
indexes_are_disabled()
no parameters
RETURN
0 indexes are not disabled
1 all indexes are disabled
[2 non-unique indexes are disabled - NOT YET IMPLEMENTED]
*/
int ha_maria::indexes_are_disabled(void)
{
return maria_indexes_are_disabled(file);
}
/*
prepare for a many-rows insert operation
e.g. - disable indexes (if they can be recreated fast) or
activate special bulk-insert optimizations
SYNOPSIS
start_bulk_insert(rows)
rows Rows to be inserted
0 if we don't know
NOTICE
Do not forget to call end_bulk_insert() later!
*/
void ha_maria::start_bulk_insert(ha_rows rows)
{
DBUG_ENTER("ha_maria::start_bulk_insert");
THD *thd= current_thd;
ulong size= min(thd->variables.read_buff_size,
(ulong) (table->s->avg_row_length * rows));
DBUG_PRINT("info", ("start_bulk_insert: rows %lu size %lu",
(ulong) rows, size));
/* don't enable row cache if too few rows */
if (!rows || (rows > MARIA_MIN_ROWS_TO_USE_WRITE_CACHE))
maria_extra(file, HA_EXTRA_WRITE_CACHE, (void*) &size);
can_enable_indexes= (maria_is_all_keys_active(file->s->state.key_map,
file->s->base.keys));
if (!(specialflag & SPECIAL_SAFE_MODE))
{
/*
Only disable old index if the table was empty and we are inserting
a lot of rows.
We should not do this for only a few rows as this is slower and
we don't want to update the key statistics based of only a few rows.
*/
if (file->state->records == 0 && can_enable_indexes &&
(!rows || rows >= MARIA_MIN_ROWS_TO_DISABLE_INDEXES))
maria_disable_non_unique_index(file, rows);
else if (!file->bulk_insert &&
(!rows || rows >= MARIA_MIN_ROWS_TO_USE_BULK_INSERT))
{
maria_init_bulk_insert(file, thd->variables.bulk_insert_buff_size, rows);
}
}
DBUG_VOID_RETURN;
}
/*
end special bulk-insert optimizations,
which have been activated by start_bulk_insert().
SYNOPSIS
end_bulk_insert()
no arguments
RETURN
0 OK
!= 0 Error
*/
int ha_maria::end_bulk_insert()
{
int err;
DBUG_ENTER("ha_maria::end_bulk_insert");
maria_end_bulk_insert(file);
err= maria_extra(file, HA_EXTRA_NO_CACHE, 0);
DBUG_RETURN(err ? err : can_enable_indexes ?
enable_indexes(HA_KEY_SWITCH_NONUNIQ_SAVE) : 0);
}
bool ha_maria::check_and_repair(THD *thd)
{
int error= 0;
int marked_crashed;
char *old_query;
uint old_query_length;
HA_CHECK_OPT check_opt;
DBUG_ENTER("ha_maria::check_and_repair");
check_opt.init();
check_opt.flags= T_MEDIUM | T_AUTO_REPAIR;
// Don't use quick if deleted rows
if (!file->state->del && (maria_recover_options & HA_RECOVER_QUICK))
check_opt.flags |= T_QUICK;
sql_print_warning("Checking table: '%s'", table->s->path.str);
old_query= thd->query;
old_query_length= thd->query_length;
pthread_mutex_lock(&LOCK_thread_count);
thd->query= table->s->table_name.str;
thd->query_length= table->s->table_name.length;
pthread_mutex_unlock(&LOCK_thread_count);
if ((marked_crashed= maria_is_crashed(file)) || check(thd, &check_opt))
{
sql_print_warning("Recovering table: '%s'", table->s->path.str);
check_opt.flags=
((maria_recover_options & HA_RECOVER_BACKUP ? T_BACKUP_DATA : 0) |
(marked_crashed ? 0 : T_QUICK) |
(maria_recover_options & HA_RECOVER_FORCE ? 0 : T_SAFE_REPAIR) |
T_AUTO_REPAIR);
if (repair(thd, &check_opt))
error= 1;
}
pthread_mutex_lock(&LOCK_thread_count);
thd->query= old_query;
thd->query_length= old_query_length;
pthread_mutex_unlock(&LOCK_thread_count);
DBUG_RETURN(error);
}
bool ha_maria::is_crashed() const
{
return (file->s->state.changed & STATE_CRASHED ||
(my_disable_locking && file->s->state.open_count));
}
int ha_maria::update_row(const uchar * old_data, uchar * new_data)
{
ha_statistic_increment(&SSV::ha_update_count);
if (table->timestamp_field_type & TIMESTAMP_AUTO_SET_ON_UPDATE)
table->timestamp_field->set_time();
return maria_update(file, old_data, new_data);
}
int ha_maria::delete_row(const uchar * buf)
{
ha_statistic_increment(&SSV::ha_delete_count);
return maria_delete(file, buf);
}
int ha_maria::index_read_map(uchar * buf, const uchar * key,
key_part_map keypart_map,
enum ha_rkey_function find_flag)
{
DBUG_ASSERT(inited == INDEX);
ha_statistic_increment(&SSV::ha_read_key_count);
int error= maria_rkey(file, buf, active_index, key, keypart_map, find_flag);
table->status= error ? STATUS_NOT_FOUND : 0;
return error;
}
int ha_maria::index_read_idx_map(uchar * buf, uint index, const uchar * key,
key_part_map keypart_map,
enum ha_rkey_function find_flag)
{
ha_statistic_increment(&SSV::ha_read_key_count);
int error= maria_rkey(file, buf, index, key, keypart_map, find_flag);
table->status= error ? STATUS_NOT_FOUND : 0;
return error;
}
int ha_maria::index_read_last_map(uchar * buf, const uchar * key,
key_part_map keypart_map)
{
DBUG_ENTER("ha_maria::index_read_last_map");
DBUG_ASSERT(inited == INDEX);
ha_statistic_increment(&SSV::ha_read_key_count);
int error= maria_rkey(file, buf, active_index, key, keypart_map,
HA_READ_PREFIX_LAST);
table->status= error ? STATUS_NOT_FOUND : 0;
DBUG_RETURN(error);
}
int ha_maria::index_next(uchar * buf)
{
DBUG_ASSERT(inited == INDEX);
ha_statistic_increment(&SSV::ha_read_next_count);
int error= maria_rnext(file, buf, active_index);
table->status= error ? STATUS_NOT_FOUND : 0;
return error;
}
int ha_maria::index_prev(uchar * buf)
{
DBUG_ASSERT(inited == INDEX);
ha_statistic_increment(&SSV::ha_read_prev_count);
int error= maria_rprev(file, buf, active_index);
table->status= error ? STATUS_NOT_FOUND : 0;
return error;
}
int ha_maria::index_first(uchar * buf)
{
DBUG_ASSERT(inited == INDEX);
ha_statistic_increment(&SSV::ha_read_first_count);
int error= maria_rfirst(file, buf, active_index);
table->status= error ? STATUS_NOT_FOUND : 0;
return error;
}
int ha_maria::index_last(uchar * buf)
{
DBUG_ASSERT(inited == INDEX);
ha_statistic_increment(&SSV::ha_read_last_count);
int error= maria_rlast(file, buf, active_index);
table->status= error ? STATUS_NOT_FOUND : 0;
return error;
}
int ha_maria::index_next_same(uchar * buf,
const uchar *key __attribute__ ((unused)),
uint length __attribute__ ((unused)))
{
DBUG_ASSERT(inited == INDEX);
ha_statistic_increment(&SSV::ha_read_next_count);
int error= maria_rnext_same(file, buf);
table->status= error ? STATUS_NOT_FOUND : 0;
return error;
}
int ha_maria::rnd_init(bool scan)
{
if (scan)
return maria_scan_init(file);
return maria_reset(file); // Free buffers
}
int ha_maria::rnd_end()
{
/* Safe to call even if we don't have started a scan */
maria_scan_end(file);
return 0;
}
int ha_maria::rnd_next(uchar *buf)
{
ha_statistic_increment(&SSV::ha_read_rnd_next_count);
int error= maria_scan(file, buf);
table->status= error ? STATUS_NOT_FOUND : 0;
return error;
}
int ha_maria::restart_rnd_next(uchar *buf, uchar *pos)
{
return rnd_pos(buf, pos);
}
int ha_maria::rnd_pos(uchar * buf, uchar *pos)
{
ha_statistic_increment(&SSV::ha_read_rnd_count);
int error= maria_rrnd(file, buf, my_get_ptr(pos, ref_length));
table->status= error ? STATUS_NOT_FOUND : 0;
return error;
}
void ha_maria::position(const uchar * record)
{
my_off_t row_position= maria_position(file);
my_store_ptr(ref, ref_length, row_position);
}
int ha_maria::info(uint flag)
{
MARIA_INFO maria_info;
char name_buff[FN_REFLEN];
(void) maria_status(file, &maria_info, flag);
if (flag & HA_STATUS_VARIABLE)
{
stats.records= maria_info.records;
stats.deleted= maria_info.deleted;
stats.data_file_length= maria_info.data_file_length;
stats.index_file_length= maria_info.index_file_length;
stats.delete_length= maria_info.delete_length;
stats.check_time= maria_info.check_time;
stats.mean_rec_length= maria_info.mean_reclength;
}
if (flag & HA_STATUS_CONST)
{
TABLE_SHARE *share= table->s;
stats.max_data_file_length= maria_info.max_data_file_length;
stats.max_index_file_length= maria_info.max_index_file_length;
stats.create_time= maria_info.create_time;
ref_length= maria_info.reflength;
share->db_options_in_use= maria_info.options;
stats.block_size= maria_block_size;
/* Update share */
if (share->tmp_table == NO_TMP_TABLE)
pthread_mutex_lock(&share->mutex);
share->keys_in_use.set_prefix(share->keys);
share->keys_in_use.intersect_extended(maria_info.key_map);
share->keys_for_keyread.intersect(share->keys_in_use);
share->db_record_offset= maria_info.record_offset;
if (share->key_parts)
memcpy((char*) table->key_info[0].rec_per_key,
(char*) maria_info.rec_per_key,
sizeof(table->key_info[0].rec_per_key) * share->key_parts);
if (share->tmp_table == NO_TMP_TABLE)
pthread_mutex_unlock(&share->mutex);
/*
Set data_file_name and index_file_name to point at the symlink value
if table is symlinked (Ie; Real name is not same as generated name)
*/
data_file_name= index_file_name= 0;
fn_format(name_buff, file->s->open_file_name, "", MARIA_NAME_DEXT,
MY_APPEND_EXT | MY_UNPACK_FILENAME);
if (strcmp(name_buff, maria_info.data_file_name))
data_file_name=maria_info.data_file_name;
fn_format(name_buff, file->s->open_file_name, "", MARIA_NAME_IEXT,
MY_APPEND_EXT | MY_UNPACK_FILENAME);
if (strcmp(name_buff, maria_info.index_file_name))
index_file_name=maria_info.index_file_name;
}
if (flag & HA_STATUS_ERRKEY)
{
errkey= maria_info.errkey;
my_store_ptr(dup_ref, ref_length, maria_info.dup_key_pos);
}
/* Faster to always update, than to do it based on flag */
stats.update_time= maria_info.update_time;
stats.auto_increment_value= maria_info.auto_increment;
return 0;
}
int ha_maria::extra(enum ha_extra_function operation)
{
if ((specialflag & SPECIAL_SAFE_MODE) && operation == HA_EXTRA_KEYREAD)
return 0;
return maria_extra(file, operation, 0);
}
int ha_maria::reset(void)
{
return maria_reset(file);
}
/* To be used with WRITE_CACHE and EXTRA_CACHE */
int ha_maria::extra_opt(enum ha_extra_function operation, ulong cache_size)
{
if ((specialflag & SPECIAL_SAFE_MODE) && operation == HA_EXTRA_WRITE_CACHE)
return 0;
return maria_extra(file, operation, (void*) &cache_size);
}
int ha_maria::delete_all_rows()
{
return maria_delete_all_rows(file);
}
int ha_maria::delete_table(const char *name)
{
return maria_delete_table(name);
}
#define THD_TRN (*(TRN **)thd_ha_data(thd, maria_hton))
int ha_maria::external_lock(THD *thd, int lock_type)
{
TRN *trn= THD_TRN;
DBUG_ENTER("ha_maria::external_lock");
/*
We don't test now_transactional because it may vary between lock/unlock
and thus confuse our reference counting.
It is critical to skip non-transactional tables: user-visible temporary
tables get an external_lock() when read/written for the first time, but no
corresponding unlock (they just stay locked and are later dropped while
locked); if a tmp table was transactional, "SELECT FROM non_tmp, tmp"
would never commit as its "locked_tables" count would stay 1.
When Maria has has_transactions()==TRUE, open_temporary_table()
(sql_base.cc) will use TRANSACTIONAL_TMP_TABLE and thus the
external_lock(F_UNLCK) will happen and we can then allow the user to
create transactional temporary tables.
*/
if (!file->s->base.born_transactional)
goto skip_transaction;
if (lock_type != F_UNLCK)
{
if (!thd->transaction.on)
{
/*
No need to log REDOs/UNDOs. If this is an internal temporary table
which will be renamed to a permanent table (like in ALTER TABLE),
the rename happens after unlocking so will be durable (and the table
will get its create_rename_lsn).
Note: if we wanted to enable users to have an old backup and apply
tons of archived logs to roll-forward, we could then not disable
REDOs/UNDOs in this case.
*/
DBUG_PRINT("info", ("Disabling logging for table"));
_ma_tmp_disable_logging_for_table(file->s);
}
if (!trn) /* no transaction yet - open it now */
{
trn= trnman_new_trn(& thd->mysys_var->mutex,
& thd->mysys_var->suspend,
thd->thread_stack + STACK_DIRECTION *
(my_thread_stack_size - STACK_MIN_SIZE));
if (unlikely(!trn))
DBUG_RETURN(HA_ERR_OUT_OF_MEM);
DBUG_PRINT("info", ("THD_TRN set to 0x%lx", (ulong)trn));
THD_TRN= trn;
if (thd->options & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN))
trans_register_ha(thd, TRUE, maria_hton);
}
this->file->trn= trn;
if (!trnman_increment_locked_tables(trn))
{
trans_register_ha(thd, FALSE, maria_hton);
trnman_new_statement(trn);
}
}
else
{
_ma_reenable_logging_for_table(file->s);
this->file->trn= 0; /* TODO: remove it also in commit and rollback */
if (trn && trnman_has_locked_tables(trn))
{
if (!trnman_decrement_locked_tables(trn))
{
/* autocommit ? rollback a transaction */
#ifdef MARIA_CANNOT_ROLLBACK
if (ma_commit(trn))
DBUG_RETURN(1);
THD_TRN= 0;
#else
if (!(thd->options & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)))
{
trnman_rollback_trn(trn);
DBUG_PRINT("info", ("THD_TRN set to 0x0"));
THD_TRN= 0;
}
#endif
}
}
}
skip_transaction:
DBUG_RETURN(maria_lock_database(file, !table->s->tmp_table ?
lock_type : ((lock_type == F_UNLCK) ?
F_UNLCK : F_EXTRA_LCK)));
}
int ha_maria::start_stmt(THD *thd, thr_lock_type lock_type)
{
TRN *trn= THD_TRN;
if (file->s->base.born_transactional)
{
DBUG_ASSERT(trn); // this may be called only after external_lock()
DBUG_ASSERT(trnman_has_locked_tables(trn));
DBUG_ASSERT(lock_type != F_UNLCK);
/*
As external_lock() was already called, don't increment locked_tables.
Note that we call the function below possibly several times when
statement starts (once per table). This is ok as long as that function
does cheap operations. Otherwise, we will need to do it only on first
call to start_stmt().
*/
trnman_new_statement(trn);
}
return 0;
}
THR_LOCK_DATA **ha_maria::store_lock(THD *thd,
THR_LOCK_DATA **to,
enum thr_lock_type lock_type)
{
if (lock_type != TL_IGNORE && file->lock.type == TL_UNLOCK)
file->lock.type= lock_type;
*to++= &file->lock;
return to;
}
void ha_maria::update_create_info(HA_CREATE_INFO *create_info)
{
ha_maria::info(HA_STATUS_AUTO | HA_STATUS_CONST);
if (!(create_info->used_fields & HA_CREATE_USED_AUTO))
{
create_info->auto_increment_value= stats.auto_increment_value;
}
create_info->data_file_name= data_file_name;
create_info->index_file_name= index_file_name;
}
enum row_type ha_maria::get_row_type() const
{
switch (file->s->data_file_type) {
case STATIC_RECORD: return ROW_TYPE_FIXED;
case DYNAMIC_RECORD: return ROW_TYPE_DYNAMIC;
case BLOCK_RECORD: return ROW_TYPE_PAGE;
case COMPRESSED_RECORD: return ROW_TYPE_COMPRESSED;
default: return ROW_TYPE_NOT_USED;
}
}
static enum data_file_type maria_row_type(HA_CREATE_INFO *info)
{
if (info->transactional == HA_CHOICE_YES)
return BLOCK_RECORD;
switch (info->row_type) {
case ROW_TYPE_FIXED: return STATIC_RECORD;
case ROW_TYPE_DYNAMIC: return DYNAMIC_RECORD;
default: return BLOCK_RECORD;
}
}
int ha_maria::create(const char *name, register TABLE *table_arg,
HA_CREATE_INFO *ha_create_info)
{
int error;
uint create_flags= 0, records, i;
char buff[FN_REFLEN];
MARIA_KEYDEF *keydef;
MARIA_COLUMNDEF *recinfo;
MARIA_CREATE_INFO create_info;
TABLE_SHARE *share= table_arg->s;
uint options= share->db_options_in_use;
enum data_file_type row_type;
DBUG_ENTER("ha_maria::create");
for (i= 0; i < share->keys; i++)
{
if (table_arg->key_info[i].flags & HA_USES_PARSER)
{
create_flags|= HA_CREATE_RELIES_ON_SQL_LAYER;
break;
}
}
row_type= maria_row_type(ha_create_info);
if ((error= table2maria(table_arg, &keydef, &recinfo, &records)))
DBUG_RETURN(error); /* purecov: inspected */
bzero((char*) &create_info, sizeof(create_info));
create_info.max_rows= share->max_rows;
create_info.reloc_rows= share->min_rows;
create_info.with_auto_increment= share->next_number_key_offset == 0;
create_info.auto_increment= (ha_create_info->auto_increment_value ?
ha_create_info->auto_increment_value -1 :
(ulonglong) 0);
create_info.data_file_length= ((ulonglong) share->max_rows *
share->avg_row_length);
create_info.data_file_name= ha_create_info->data_file_name;
create_info.index_file_name= ha_create_info->index_file_name;
#ifdef ASK_MONTY
/**
@todo ASK_MONTY
Where "transactional" in the frm and in the engine can go out of sync.
Don't we want to do, after the setting, this test:
if (!create_info.transactional &&
ha_create_info->transactional == HA_CHOICE_YES)
error;
?
Why fool the user?
Shouldn't this test be pushed down to maria_create()? Because currently,
ma_test1 -T crashes: it creates a table with DYNAMIC_RECORD but has
born_transactional==1, which confuses some recovery-related code.
*/
#endif
create_info.transactional= (row_type == BLOCK_RECORD &&
ha_create_info->transactional != HA_CHOICE_NO);
if (ha_create_info->options & HA_LEX_CREATE_TMP_TABLE)
create_flags|= HA_CREATE_TMP_TABLE;
if (ha_create_info->options & HA_CREATE_KEEP_FILES)
create_flags|= HA_CREATE_KEEP_FILES;
if (options & HA_OPTION_PACK_RECORD)
create_flags|= HA_PACK_RECORD;
if (options & HA_OPTION_CHECKSUM)
create_flags|= HA_CREATE_CHECKSUM;
if (options & HA_OPTION_DELAY_KEY_WRITE)
create_flags|= HA_CREATE_DELAY_KEY_WRITE;
/* TODO: Check that the following fn_format is really needed */
error=
maria_create(fn_format(buff, name, "", "",
MY_UNPACK_FILENAME | MY_APPEND_EXT),
row_type, share->keys, keydef,
records, recinfo,
0, (MARIA_UNIQUEDEF *) 0,
&create_info, create_flags);
my_free((uchar*) recinfo, MYF(0));
DBUG_RETURN(error);
}
int ha_maria::rename_table(const char *from, const char *to)
{
return maria_rename(from, to);
}
void ha_maria::get_auto_increment(ulonglong offset, ulonglong increment,
ulonglong nb_desired_values,
ulonglong *first_value,
ulonglong *nb_reserved_values)
{
ulonglong nr;
int error;
uchar key[HA_MAX_KEY_LENGTH];
if (!table->s->next_number_key_offset)
{ // Autoincrement at key-start
ha_maria::info(HA_STATUS_AUTO);
*first_value= stats.auto_increment_value;
/* Maria has only table-level lock for now, so reserves to +inf */
*nb_reserved_values= ULONGLONG_MAX;
return;
}
/* it's safe to call the following if bulk_insert isn't on */
maria_flush_bulk_insert(file, table->s->next_number_index);
(void) extra(HA_EXTRA_KEYREAD);
key_copy(key, table->record[0],
table->key_info + table->s->next_number_index,
table->s->next_number_key_offset);
error= maria_rkey(file, table->record[1], (int) table->s->next_number_index,
key, make_prev_keypart_map(table->s->next_number_keypart),
HA_READ_PREFIX_LAST);
if (error)
nr= 1;
else
{
/* Get data from record[1] */
nr= ((ulonglong) table->next_number_field->
val_int_offset(table->s->rec_buff_length) + 1);
}
extra(HA_EXTRA_NO_KEYREAD);
*first_value= nr;
/*
MySQL needs to call us for next row: assume we are inserting ("a",null)
here, we return 3, and next this statement will want to insert ("b",null):
there is no reason why ("b",3+1) would be the good row to insert: maybe it
already exists, maybe 3+1 is too large...
*/
*nb_reserved_values= 1;
}
/*
Find out how many rows there is in the given range
SYNOPSIS
records_in_range()
inx Index to use
min_key Start of range. Null pointer if from first key
max_key End of range. Null pointer if to last key
NOTES
min_key.flag can have one of the following values:
HA_READ_KEY_EXACT Include the key in the range
HA_READ_AFTER_KEY Don't include key in range
max_key.flag can have one of the following values:
HA_READ_BEFORE_KEY Don't include key in range
HA_READ_AFTER_KEY Include all 'end_key' values in the range
RETURN
HA_POS_ERROR Something is wrong with the index tree.
0 There is no matching keys in the given range
number > 0 There is approximately 'number' matching rows in
the range.
*/
ha_rows ha_maria::records_in_range(uint inx, key_range *min_key,
key_range *max_key)
{
return (ha_rows) maria_records_in_range(file, (int) inx, min_key, max_key);
}
int ha_maria::ft_read(uchar * buf)
{
int error;
if (!ft_handler)
return -1;
thread_safe_increment(table->in_use->status_var.ha_read_next_count,
&LOCK_status); // why ?
error= ft_handler->please->read_next(ft_handler, (char*) buf);
table->status= error ? STATUS_NOT_FOUND : 0;
return error;
}
uint ha_maria::checksum() const
{
return (uint) file->state->checksum;
}
bool ha_maria::check_if_incompatible_data(HA_CREATE_INFO *info,
uint table_changes)
{
uint options= table->s->db_options_in_use;
if (info->auto_increment_value != stats.auto_increment_value ||
info->data_file_name != data_file_name ||
info->index_file_name != index_file_name ||
maria_row_type(info) != data_file_type ||
table_changes == IS_EQUAL_NO ||
table_changes & IS_EQUAL_PACK_LENGTH) // Not implemented yet
return COMPATIBLE_DATA_NO;
if ((options & (HA_OPTION_PACK_RECORD | HA_OPTION_CHECKSUM |
HA_OPTION_DELAY_KEY_WRITE)) !=
(info->table_options & (HA_OPTION_PACK_RECORD | HA_OPTION_CHECKSUM |
HA_OPTION_DELAY_KEY_WRITE)))
return COMPATIBLE_DATA_NO;
return COMPATIBLE_DATA_YES;
}
static int maria_hton_panic(handlerton *hton, ha_panic_function flag)
{
ma_checkpoint_execute(CHECKPOINT_FULL, FALSE); /* can't catch error */
return maria_panic(flag);
}
static int maria_commit(handlerton *hton __attribute__ ((unused)),
THD *thd, bool all)
{
TRN *trn= THD_TRN;
DBUG_ENTER("maria_commit");
trnman_reset_locked_tables(trn);
/* statement or transaction ? */
if ((thd->options & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) && !all)
DBUG_RETURN(0); // end of statement
DBUG_PRINT("info", ("THD_TRN set to 0x0"));
THD_TRN= 0;
DBUG_RETURN(ma_commit(trn)); // end of transaction
}
static int maria_rollback(handlerton *hton __attribute__ ((unused)),
THD *thd, bool all)
{
TRN *trn= THD_TRN;
DBUG_ENTER("maria_rollback");
trnman_reset_locked_tables(trn);
/* statement or transaction ? */
if ((thd->options & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) && !all)
{
trnman_rollback_statement(trn);
DBUG_RETURN(0); // end of statement
}
DBUG_PRINT("info", ("THD_TRN set to 0x0"));
THD_TRN= 0;
DBUG_RETURN(trnman_rollback_trn(trn) ?
HA_ERR_OUT_OF_MEM : 0); // end of transaction
}
static int ha_maria_init(void *p)
{
int res;
maria_hton= (handlerton *)p;
maria_hton->state= SHOW_OPTION_YES;
maria_hton->db_type= DB_TYPE_MARIA;
maria_hton->create= maria_create_handler;
maria_hton->panic= maria_hton_panic;
maria_hton->commit= maria_commit;
maria_hton->rollback= maria_rollback;
/* TODO: decide if we support Maria being used for log tables */
maria_hton->flags= HTON_CAN_RECREATE | HTON_SUPPORT_LOG_TABLES;
bzero(maria_log_pagecache, sizeof(*maria_log_pagecache));
maria_data_root= mysql_real_data_home;
res= maria_init() || ma_control_file_create_or_open() ||
(init_pagecache(maria_log_pagecache,
TRANSLOG_PAGECACHE_SIZE, 0, 0,
TRANSLOG_PAGE_SIZE) == 0) ||
translog_init(maria_data_root, TRANSLOG_FILE_SIZE,
MYSQL_VERSION_ID, server_id, maria_log_pagecache,
TRANSLOG_DEFAULT_FLAGS) ||
maria_recover() ||
ma_checkpoint_init(TRUE);
maria_multi_threaded= TRUE;
return res;
}
#ifdef HAVE_QUERY_CACHE
/**
@brief Register a named table with a call back function to the query cache.
@param thd The thread handle
@param table_key A pointer to the table name in the table cache
@param key_length The length of the table name
@param[out] engine_callback The pointer to the storage engine call back
function, currently 0
@param[out] engine_data Engine data will be set to 0.
@note Despite the name of this function, it is used to check each statement
before it is cached and not to register a table or callback function.
@see handler::register_query_cache_table
@return The error code. The engine_data and engine_callback will be set to 0.
@retval TRUE Success
@retval FALSE An error occured
*/
my_bool ha_maria::register_query_cache_table(THD *thd, char *table_name,
uint table_name_len,
qc_engine_callback
*engine_callback,
ulonglong *engine_data)
{
/*
No call back function is needed to determine if a cached statement
is valid or not.
*/
*engine_callback= 0;
/*
No engine data is needed.
*/
*engine_data= 0;
/*
If a concurrent INSERT has happened just before the currently processed
SELECT statement, the total size of the table is unknown.
To determine if the table size is known, the current thread's snap shot of
the table size with the actual table size are compared.
If the table size is unknown the SELECT statement can't be cached.
*/
ulonglong actual_data_file_length;
ulonglong current_data_file_length;
/*
POSIX visibility rules specify that "2. Whatever memory values a
thread can see when it unlocks a mutex <...> can also be seen by any
thread that later locks the same mutex". In this particular case,
concurrent insert thread had modified the data_file_length in
MYISAM_SHARE before it has unlocked (or even locked)
structure_guard_mutex. So, here we're guaranteed to see at least that
value after we've locked the same mutex. We can see a later value
(modified by some other thread) though, but it's ok, as we only want
to know if the variable was changed, the actual new value doesn't matter
*/
actual_data_file_length= file->s->state.state.data_file_length;
current_data_file_length= file->save_state.data_file_length;
if (current_data_file_length != actual_data_file_length)
{
/* Don't cache current statement. */
return FALSE;
}
/* It is ok to try to cache current statement. */
return TRUE;
}
#endif
static struct st_mysql_sys_var* system_variables[]= {
MYSQL_SYSVAR(block_size),
MYSQL_SYSVAR(checkpoint_frequency),
MYSQL_SYSVAR(max_sort_file_size),
MYSQL_SYSVAR(repair_threads),
MYSQL_SYSVAR(sort_buffer_size),
MYSQL_SYSVAR(stats_method),
NULL
};
/**
@brief Updates the checkpoint frequency and restarts the background thread.
Background thread has a loop which correctness depends on a constant
checkpoint frequency. So when the user wants to modify it, we stop and
restart the thread.
*/
static void update_checkpoint_frequency(MYSQL_THD thd,
struct st_mysql_sys_var *var,
void *var_ptr, void *save)
{
ulong new_value= (ulong)(*(long *)save), *dest= (ulong *)var_ptr;
if (new_value != *dest) /* it's actually a change */
{
ma_checkpoint_end();
*dest= new_value;
ma_checkpoint_init(TRUE);
}
}
struct st_mysql_storage_engine maria_storage_engine=
{ MYSQL_HANDLERTON_INTERFACE_VERSION };
mysql_declare_plugin(maria)
{
MYSQL_STORAGE_ENGINE_PLUGIN,
&maria_storage_engine,
"MARIA",
"MySQL AB",
"Traditional transactional MySQL tables",
PLUGIN_LICENSE_GPL,
ha_maria_init, /* Plugin Init */
NULL, /* Plugin Deinit */
0x0100, /* 1.0 */
NULL, /* status variables */
system_variables, /* system variables */
NULL
}
mysql_declare_plugin_end;
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