/
i_s.cc
6504 lines (5119 loc) · 168 KB
/
i_s.cc
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/*****************************************************************************
Copyright (c) 2007, 2016, Oracle and/or its affiliates. All Rights Reserved.
Copyright (c) 2014, 2022, MariaDB Corporation.
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.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
*****************************************************************************/
/**************************************************//**
@file handler/i_s.cc
InnoDB INFORMATION SCHEMA tables interface to MySQL.
Created July 18, 2007 Vasil Dimov
*******************************************************/
#include "univ.i"
#include <mysql_version.h>
#include <field.h>
#include <sql_acl.h>
#include <sql_show.h>
#include <sql_time.h>
#include "i_s.h"
#include "btr0pcur.h"
#include "btr0types.h"
#include "dict0dict.h"
#include "dict0load.h"
#include "buf0buddy.h"
#include "buf0buf.h"
#include "ibuf0ibuf.h"
#include "dict0mem.h"
#include "dict0types.h"
#include "srv0start.h"
#include "trx0i_s.h"
#include "trx0trx.h"
#include "srv0mon.h"
#include "pars0pars.h"
#include "fts0types.h"
#include "fts0opt.h"
#include "fts0priv.h"
#include "btr0btr.h"
#include "page0zip.h"
#include "fil0fil.h"
#include "fil0crypt.h"
#include "dict0crea.h"
#include "fts0vlc.h"
#include "scope.h"
#include "log.h"
/** The latest successfully looked up innodb_fts_aux_table */
table_id_t innodb_ft_aux_table_id;
/** structure associates a name string with a file page type and/or buffer
page state. */
struct buf_page_desc_t{
const char* type_str; /*!< String explain the page
type/state */
ulint type_value; /*!< Page type or page state */
};
/** We also define I_S_PAGE_TYPE_INDEX as the Index Page's position
in i_s_page_type[] array */
#define I_S_PAGE_TYPE_INDEX 1
/** Any unassigned FIL_PAGE_TYPE will be treated as unknown. */
#define I_S_PAGE_TYPE_UNKNOWN FIL_PAGE_TYPE_UNKNOWN
/** R-tree index page */
#define I_S_PAGE_TYPE_RTREE (FIL_PAGE_TYPE_LAST + 1)
/** Change buffer B-tree page */
#define I_S_PAGE_TYPE_IBUF (FIL_PAGE_TYPE_LAST + 2)
#define I_S_PAGE_TYPE_LAST I_S_PAGE_TYPE_IBUF
#define I_S_PAGE_TYPE_BITS 4
/** Name string for File Page Types */
static buf_page_desc_t i_s_page_type[] = {
{"ALLOCATED", FIL_PAGE_TYPE_ALLOCATED},
{"INDEX", FIL_PAGE_INDEX},
{"UNDO_LOG", FIL_PAGE_UNDO_LOG},
{"INODE", FIL_PAGE_INODE},
{"IBUF_FREE_LIST", FIL_PAGE_IBUF_FREE_LIST},
{"IBUF_BITMAP", FIL_PAGE_IBUF_BITMAP},
{"SYSTEM", FIL_PAGE_TYPE_SYS},
{"TRX_SYSTEM", FIL_PAGE_TYPE_TRX_SYS},
{"FILE_SPACE_HEADER", FIL_PAGE_TYPE_FSP_HDR},
{"EXTENT_DESCRIPTOR", FIL_PAGE_TYPE_XDES},
{"BLOB", FIL_PAGE_TYPE_BLOB},
{"COMPRESSED_BLOB", FIL_PAGE_TYPE_ZBLOB},
{"COMPRESSED_BLOB2", FIL_PAGE_TYPE_ZBLOB2},
{"UNKNOWN", I_S_PAGE_TYPE_UNKNOWN},
{"RTREE_INDEX", I_S_PAGE_TYPE_RTREE},
{"IBUF_INDEX", I_S_PAGE_TYPE_IBUF},
{"PAGE COMPRESSED", FIL_PAGE_PAGE_COMPRESSED},
{"PAGE COMPRESSED AND ENCRYPTED", FIL_PAGE_PAGE_COMPRESSED_ENCRYPTED},
};
/** This structure defines information we will fetch from pages
currently cached in the buffer pool. It will be used to populate
table INFORMATION_SCHEMA.INNODB_BUFFER_PAGE */
struct buf_page_info_t{
ulint block_id; /*!< Buffer Pool block ID */
/** page identifier */
page_id_t id;
uint32_t access_time; /*!< Time of first access */
uint32_t state; /*!< buf_page_t::state() */
#ifdef BTR_CUR_HASH_ADAPT
unsigned hashed:1; /*!< Whether hash index has been
built on this page */
#endif /* BTR_CUR_HASH_ADAPT */
unsigned is_old:1; /*!< TRUE if the block is in the old
blocks in buf_pool.LRU_old */
unsigned freed_page_clock:31; /*!< the value of
buf_pool.freed_page_clock */
unsigned zip_ssize:PAGE_ZIP_SSIZE_BITS;
/*!< Compressed page size */
unsigned compressed_only:1; /*!< ROW_FORMAT=COMPRESSED only */
unsigned page_type:I_S_PAGE_TYPE_BITS; /*!< Page type */
unsigned num_recs:UNIV_PAGE_SIZE_SHIFT_MAX-2;
/*!< Number of records on Page */
unsigned data_size:UNIV_PAGE_SIZE_SHIFT_MAX;
/*!< Sum of the sizes of the records */
lsn_t newest_mod; /*!< Log sequence number of
the youngest modification */
lsn_t oldest_mod; /*!< Log sequence number of
the oldest modification */
index_id_t index_id; /*!< Index ID if a index page */
};
/*
Use the following types mapping:
C type ST_FIELD_INFO::field_type
---------------------------------
long MYSQL_TYPE_LONGLONG
(field_length=MY_INT64_NUM_DECIMAL_DIGITS)
long unsigned MYSQL_TYPE_LONGLONG
(field_length=MY_INT64_NUM_DECIMAL_DIGITS, field_flags=MY_I_S_UNSIGNED)
char* MYSQL_TYPE_STRING
(field_length=n)
float MYSQL_TYPE_FLOAT
(field_length=0 is ignored)
void* MYSQL_TYPE_LONGLONG
(field_length=MY_INT64_NUM_DECIMAL_DIGITS, field_flags=MY_I_S_UNSIGNED)
boolean (if else) MYSQL_TYPE_LONG
(field_length=1)
time_t MYSQL_TYPE_DATETIME
(field_length=0 ignored)
---------------------------------
*/
/**
Common function to fill any of the dynamic tables:
INFORMATION_SCHEMA.innodb_trx
INFORMATION_SCHEMA.innodb_locks
INFORMATION_SCHEMA.innodb_lock_waits
@retval false if access to the table is blocked
@retval true if something should be filled in */
static bool trx_i_s_common_fill_table(THD *thd, TABLE_LIST *tables)
{
DBUG_ENTER("trx_i_s_common_fill_table");
/* deny access to non-superusers */
if (check_global_access(thd, PROCESS_ACL))
DBUG_RETURN(false);
RETURN_IF_INNODB_NOT_STARTED(tables->schema_table_name.str);
/* update the cache */
trx_i_s_cache_start_write(trx_i_s_cache);
trx_i_s_possibly_fetch_data_into_cache(trx_i_s_cache);
trx_i_s_cache_end_write(trx_i_s_cache);
if (trx_i_s_cache_is_truncated(trx_i_s_cache))
sql_print_warning("InnoDB: Data in %.*s truncated due to memory limit"
" of %u bytes",
int(tables->schema_table_name.length),
tables->schema_table_name.str,
TRX_I_S_MEM_LIMIT);
DBUG_RETURN(true);
}
/*******************************************************************//**
Unbind a dynamic INFORMATION_SCHEMA table.
@return 0 on success */
static
int
i_s_common_deinit(
/*==============*/
void* p); /*!< in/out: table schema object */
/*******************************************************************//**
Auxiliary function to store time_t value in MYSQL_TYPE_DATETIME
field.
@return 0 on success */
static
int
field_store_time_t(
/*===============*/
Field* field, /*!< in/out: target field for storage */
time_t time) /*!< in: value to store */
{
MYSQL_TIME my_time;
struct tm tm_time;
if (time) {
#if 0
/* use this if you are sure that `variables' and `time_zone'
are always initialized */
thd->variables.time_zone->gmt_sec_to_TIME(
&my_time, (my_time_t) time);
#else
localtime_r(&time, &tm_time);
localtime_to_TIME(&my_time, &tm_time);
my_time.time_type = MYSQL_TIMESTAMP_DATETIME;
#endif
} else {
memset(&my_time, 0, sizeof(my_time));
}
/* JAN: TODO: MySQL 5.7
return(field->store_time(&my_time, MYSQL_TIMESTAMP_DATETIME));
*/
return(field->store_time(&my_time));
}
/*******************************************************************//**
Auxiliary function to store char* value in MYSQL_TYPE_STRING field.
@return 0 on success */
static
int
field_store_string(
/*===============*/
Field* field, /*!< in/out: target field for storage */
const char* str) /*!< in: NUL-terminated utf-8 string,
or NULL */
{
if (!str) {
field->set_null();
return 0;
}
field->set_notnull();
return field->store(str, uint(strlen(str)), system_charset_info);
}
#ifdef BTR_CUR_HASH_ADAPT
# define I_S_AHI 1 /* Include the IS_HASHED column */
#else
# define I_S_AHI 0 /* Omit the IS_HASHED column */
#endif
static const LEX_CSTRING isolation_level_values[] =
{
{ STRING_WITH_LEN("READ UNCOMMITTED") },
{ STRING_WITH_LEN("READ COMMITTED") },
{ STRING_WITH_LEN("REPEATABLE READ") },
{ STRING_WITH_LEN("SERIALIZABLE") }
};
static TypelibBuffer<4> isolation_level_values_typelib(isolation_level_values);
namespace Show {
/* Fields of the dynamic table INFORMATION_SCHEMA.innodb_trx */
static ST_FIELD_INFO innodb_trx_fields_info[]=
{
#define IDX_TRX_ID 0
Column("trx_id", ULonglong(), NOT_NULL),
#define IDX_TRX_STATE 1
Column("trx_state", Varchar(13), NOT_NULL),
#define IDX_TRX_STARTED 2
Column("trx_started", Datetime(0), NOT_NULL),
#define IDX_TRX_REQUESTED_LOCK_ID 3
Column("trx_requested_lock_id",
Varchar(TRX_I_S_LOCK_ID_MAX_LEN + 1), NULLABLE),
#define IDX_TRX_WAIT_STARTED 4
Column("trx_wait_started", Datetime(0), NULLABLE),
#define IDX_TRX_WEIGHT 5
Column("trx_weight", ULonglong(), NOT_NULL),
#define IDX_TRX_MYSQL_THREAD_ID 6
Column("trx_mysql_thread_id", ULonglong(), NOT_NULL),
#define IDX_TRX_QUERY 7
Column("trx_query", Varchar(TRX_I_S_TRX_QUERY_MAX_LEN), NULLABLE),
#define IDX_TRX_OPERATION_STATE 8
Column("trx_operation_state", Varchar(64), NULLABLE),
#define IDX_TRX_TABLES_IN_USE 9
Column("trx_tables_in_use", ULonglong(), NOT_NULL),
#define IDX_TRX_TABLES_LOCKED 10
Column("trx_tables_locked", ULonglong(), NOT_NULL),
#define IDX_TRX_LOCK_STRUCTS 11
Column("trx_lock_structs", ULonglong(), NOT_NULL),
#define IDX_TRX_LOCK_MEMORY_BYTES 12
Column("trx_lock_memory_bytes", ULonglong(), NOT_NULL),
#define IDX_TRX_ROWS_LOCKED 13
Column("trx_rows_locked", ULonglong(), NOT_NULL),
#define IDX_TRX_ROWS_MODIFIED 14
Column("trx_rows_modified", ULonglong(), NOT_NULL),
#define IDX_TRX_CONNCURRENCY_TICKETS 15
Column("trx_concurrency_tickets", ULonglong(), NOT_NULL),
#define IDX_TRX_ISOLATION_LEVEL 16
Column("trx_isolation_level",
Enum(&isolation_level_values_typelib), NOT_NULL),
#define IDX_TRX_UNIQUE_CHECKS 17
Column("trx_unique_checks", SLong(1), NOT_NULL),
#define IDX_TRX_FOREIGN_KEY_CHECKS 18
Column("trx_foreign_key_checks", SLong(1), NOT_NULL),
#define IDX_TRX_LAST_FOREIGN_KEY_ERROR 19
Column("trx_last_foreign_key_error",
Varchar(TRX_I_S_TRX_FK_ERROR_MAX_LEN),NULLABLE),
#define IDX_TRX_READ_ONLY 20
Column("trx_is_read_only", SLong(1), NOT_NULL),
#define IDX_TRX_AUTOCOMMIT_NON_LOCKING 21
Column("trx_autocommit_non_locking", SLong(1), NOT_NULL),
CEnd()
};
} // namespace Show
/*******************************************************************//**
Read data from cache buffer and fill the INFORMATION_SCHEMA.innodb_trx
table with it.
@retval 0 on success
@retval 1 on failure */
static int fill_innodb_trx_from_cache(THD *thd, TABLE_LIST *tables, Item*)
{
ulint rows_num;
char lock_id[TRX_I_S_LOCK_ID_MAX_LEN + 1];
ulint i;
DBUG_ENTER("fill_innodb_trx_from_cache");
if (!trx_i_s_common_fill_table(thd, tables)) {
DBUG_RETURN(0);
}
struct cache
{
cache() { trx_i_s_cache_start_read(trx_i_s_cache); }
~cache() { trx_i_s_cache_end_read(trx_i_s_cache); }
} c;
Field** fields = tables->table->field;
rows_num = trx_i_s_cache_get_rows_used(trx_i_s_cache,
I_S_INNODB_TRX);
for (i = 0; i < rows_num; i++) {
i_s_trx_row_t* row;
row = (i_s_trx_row_t*)
trx_i_s_cache_get_nth_row(
trx_i_s_cache, I_S_INNODB_TRX, i);
/* trx_id */
OK(fields[IDX_TRX_ID]->store(row->trx_id, true));
/* trx_state */
OK(field_store_string(fields[IDX_TRX_STATE],
row->trx_state));
/* trx_started */
OK(field_store_time_t(fields[IDX_TRX_STARTED],
(time_t) row->trx_started));
/* trx_requested_lock_id */
/* trx_wait_started */
if (row->trx_wait_started != 0) {
OK(field_store_string(
fields[IDX_TRX_REQUESTED_LOCK_ID],
trx_i_s_create_lock_id(
row->requested_lock_row,
lock_id, sizeof(lock_id))));
/* field_store_string() sets it no notnull */
OK(field_store_time_t(
fields[IDX_TRX_WAIT_STARTED],
(time_t) row->trx_wait_started));
fields[IDX_TRX_WAIT_STARTED]->set_notnull();
} else {
fields[IDX_TRX_REQUESTED_LOCK_ID]->set_null();
fields[IDX_TRX_WAIT_STARTED]->set_null();
}
/* trx_weight */
OK(fields[IDX_TRX_WEIGHT]->store(row->trx_weight, true));
/* trx_mysql_thread_id */
OK(fields[IDX_TRX_MYSQL_THREAD_ID]->store(
row->trx_mysql_thread_id, true));
/* trx_query */
if (row->trx_query) {
/* store will do appropriate character set
conversion check */
fields[IDX_TRX_QUERY]->store(
row->trx_query,
static_cast<uint>(strlen(row->trx_query)),
row->trx_query_cs);
fields[IDX_TRX_QUERY]->set_notnull();
} else {
fields[IDX_TRX_QUERY]->set_null();
}
/* trx_operation_state */
OK(field_store_string(fields[IDX_TRX_OPERATION_STATE],
row->trx_operation_state));
/* trx_tables_in_use */
OK(fields[IDX_TRX_TABLES_IN_USE]->store(
row->trx_tables_in_use, true));
/* trx_tables_locked */
OK(fields[IDX_TRX_TABLES_LOCKED]->store(
row->trx_tables_locked, true));
/* trx_lock_structs */
OK(fields[IDX_TRX_LOCK_STRUCTS]->store(
row->trx_lock_structs, true));
/* trx_lock_memory_bytes */
OK(fields[IDX_TRX_LOCK_MEMORY_BYTES]->store(
row->trx_lock_memory_bytes, true));
/* trx_rows_locked */
OK(fields[IDX_TRX_ROWS_LOCKED]->store(
row->trx_rows_locked, true));
/* trx_rows_modified */
OK(fields[IDX_TRX_ROWS_MODIFIED]->store(
row->trx_rows_modified, true));
/* trx_concurrency_tickets */
OK(fields[IDX_TRX_CONNCURRENCY_TICKETS]->store(0, true));
/* trx_isolation_level */
OK(fields[IDX_TRX_ISOLATION_LEVEL]->store(
1 + row->trx_isolation_level, true));
/* trx_unique_checks */
OK(fields[IDX_TRX_UNIQUE_CHECKS]->store(
row->trx_unique_checks, true));
/* trx_foreign_key_checks */
OK(fields[IDX_TRX_FOREIGN_KEY_CHECKS]->store(
row->trx_foreign_key_checks, true));
/* trx_last_foreign_key_error */
OK(field_store_string(fields[IDX_TRX_LAST_FOREIGN_KEY_ERROR],
row->trx_foreign_key_error));
/* trx_is_read_only*/
OK(fields[IDX_TRX_READ_ONLY]->store(
row->trx_is_read_only, true));
/* trx_is_autocommit_non_locking */
OK(fields[IDX_TRX_AUTOCOMMIT_NON_LOCKING]->store(
row->trx_is_autocommit_non_locking, true));
OK(schema_table_store_record(thd, tables->table));
}
DBUG_RETURN(0);
}
/*******************************************************************//**
Bind the dynamic table INFORMATION_SCHEMA.innodb_trx
@return 0 on success */
static
int
innodb_trx_init(
/*============*/
void* p) /*!< in/out: table schema object */
{
ST_SCHEMA_TABLE* schema;
DBUG_ENTER("innodb_trx_init");
schema = (ST_SCHEMA_TABLE*) p;
schema->fields_info = Show::innodb_trx_fields_info;
schema->fill_table = fill_innodb_trx_from_cache;
DBUG_RETURN(0);
}
static struct st_mysql_information_schema i_s_info =
{
MYSQL_INFORMATION_SCHEMA_INTERFACE_VERSION
};
/** version number reported by SHOW PLUGINS */
constexpr unsigned i_s_version= MYSQL_VERSION_MAJOR << 8 | MYSQL_VERSION_MINOR;
struct st_maria_plugin i_s_innodb_trx =
{
/* the plugin type (a MYSQL_XXX_PLUGIN value) */
/* int */
MYSQL_INFORMATION_SCHEMA_PLUGIN,
/* pointer to type-specific plugin descriptor */
/* void* */
&i_s_info,
/* plugin name */
/* const char* */
"INNODB_TRX",
/* plugin author (for SHOW PLUGINS) */
/* const char* */
plugin_author,
/* general descriptive text (for SHOW PLUGINS) */
/* const char* */
"InnoDB transactions",
/* the plugin license (PLUGIN_LICENSE_XXX) */
/* int */
PLUGIN_LICENSE_GPL,
/* the function to invoke when plugin is loaded */
/* int (*)(void*); */
innodb_trx_init,
/* the function to invoke when plugin is unloaded */
/* int (*)(void*); */
i_s_common_deinit,
i_s_version, nullptr, nullptr, PACKAGE_VERSION,
MariaDB_PLUGIN_MATURITY_STABLE
};
static const LEX_CSTRING lock_mode_values[] =
{
{ STRING_WITH_LEN("S") },
{ STRING_WITH_LEN("S,GAP") },
{ STRING_WITH_LEN("X") },
{ STRING_WITH_LEN("X,GAP") },
{ STRING_WITH_LEN("IS") },
{ STRING_WITH_LEN("IS,GAP") },
{ STRING_WITH_LEN("IX") },
{ STRING_WITH_LEN("IX,GAP") },
{ STRING_WITH_LEN("AUTO_INC") }
};
static TypelibBuffer<9> lock_mode_values_typelib(lock_mode_values);
static const LEX_CSTRING lock_type_values[] =
{
{ STRING_WITH_LEN("RECORD") },
{ STRING_WITH_LEN("TABLE") }
};
static TypelibBuffer<2> lock_type_values_typelib(lock_type_values);
namespace Show {
/* Fields of the dynamic table INFORMATION_SCHEMA.innodb_locks */
static ST_FIELD_INFO innodb_locks_fields_info[]=
{
#define IDX_LOCK_ID 0
Column("lock_id", Varchar(TRX_I_S_LOCK_ID_MAX_LEN + 1), NOT_NULL),
#define IDX_LOCK_TRX_ID 1
Column("lock_trx_id", ULonglong(), NOT_NULL),
#define IDX_LOCK_MODE 2
Column("lock_mode", Enum(&lock_mode_values_typelib), NOT_NULL),
#define IDX_LOCK_TYPE 3
Column("lock_type", Enum(&lock_type_values_typelib), NOT_NULL),
#define IDX_LOCK_TABLE 4
Column("lock_table", Varchar(1024), NOT_NULL),
#define IDX_LOCK_INDEX 5
Column("lock_index", Varchar(1024), NULLABLE),
#define IDX_LOCK_SPACE 6
Column("lock_space", ULong(), NULLABLE),
#define IDX_LOCK_PAGE 7
Column("lock_page", ULong(), NULLABLE),
#define IDX_LOCK_REC 8
Column("lock_rec", ULong(), NULLABLE),
#define IDX_LOCK_DATA 9
Column("lock_data", Varchar(TRX_I_S_LOCK_DATA_MAX_LEN), NULLABLE),
CEnd()
};
} // namespace Show
/*******************************************************************//**
Read data from cache buffer and fill the INFORMATION_SCHEMA.innodb_locks
table with it.
@return 0 on success */
static
int
fill_innodb_locks_from_cache(
/*=========================*/
THD* thd, /*!< in: MySQL client connection */
TABLE_LIST* tables, /*!< in/out: fill this table */
Item*)
{
ulint rows_num;
char lock_id[TRX_I_S_LOCK_ID_MAX_LEN + 1];
ulint i;
DBUG_ENTER("fill_innodb_locks_from_cache");
if (!trx_i_s_common_fill_table(thd, tables)) {
DBUG_RETURN(0);
}
struct cache
{
cache() { trx_i_s_cache_start_read(trx_i_s_cache); }
~cache() { trx_i_s_cache_end_read(trx_i_s_cache); }
} c;
Field** fields = tables->table->field;
rows_num = trx_i_s_cache_get_rows_used(trx_i_s_cache,
I_S_INNODB_LOCKS);
for (i = 0; i < rows_num; i++) {
i_s_locks_row_t* row;
char buf[MAX_FULL_NAME_LEN + 1];
const char* bufend;
row = (i_s_locks_row_t*)
trx_i_s_cache_get_nth_row(
trx_i_s_cache, I_S_INNODB_LOCKS, i);
/* lock_id */
trx_i_s_create_lock_id(row, lock_id, sizeof(lock_id));
OK(field_store_string(fields[IDX_LOCK_ID],
lock_id));
/* lock_trx_id */
OK(fields[IDX_LOCK_TRX_ID]->store(row->lock_trx_id, true));
/* lock_mode */
OK(fields[IDX_LOCK_MODE]->store(row->lock_mode, true));
/* lock_type */
OK(fields[IDX_LOCK_TYPE]->store(
row->lock_index ? 1 : 2, true));
/* lock_table */
bufend = innobase_convert_name(buf, sizeof(buf),
row->lock_table,
strlen(row->lock_table),
thd);
OK(fields[IDX_LOCK_TABLE]->store(
buf, uint(bufend - buf), system_charset_info));
if (row->lock_index) {
/* record lock */
OK(field_store_string(fields[IDX_LOCK_INDEX],
row->lock_index));
OK(fields[IDX_LOCK_SPACE]->store(
row->lock_page.space(), true));
fields[IDX_LOCK_SPACE]->set_notnull();
OK(fields[IDX_LOCK_PAGE]->store(
row->lock_page.page_no(), true));
fields[IDX_LOCK_PAGE]->set_notnull();
OK(fields[IDX_LOCK_REC]->store(
row->lock_rec, true));
fields[IDX_LOCK_REC]->set_notnull();
OK(field_store_string(fields[IDX_LOCK_DATA],
row->lock_data));
} else {
fields[IDX_LOCK_INDEX]->set_null();
fields[IDX_LOCK_SPACE]->set_null();
fields[IDX_LOCK_REC]->set_null();
fields[IDX_LOCK_DATA]->set_null();
}
OK(schema_table_store_record(thd, tables->table));
}
DBUG_RETURN(0);
}
/*******************************************************************//**
Bind the dynamic table INFORMATION_SCHEMA.innodb_locks
@return 0 on success */
static
int
innodb_locks_init(
/*==============*/
void* p) /*!< in/out: table schema object */
{
ST_SCHEMA_TABLE* schema;
DBUG_ENTER("innodb_locks_init");
schema = (ST_SCHEMA_TABLE*) p;
schema->fields_info = Show::innodb_locks_fields_info;
schema->fill_table = fill_innodb_locks_from_cache;
DBUG_RETURN(0);
}
struct st_maria_plugin i_s_innodb_locks =
{
/* the plugin type (a MYSQL_XXX_PLUGIN value) */
/* int */
MYSQL_INFORMATION_SCHEMA_PLUGIN,
/* pointer to type-specific plugin descriptor */
/* void* */
&i_s_info,
/* plugin name */
/* const char* */
"INNODB_LOCKS",
/* plugin author (for SHOW PLUGINS) */
/* const char* */
plugin_author,
/* general descriptive text (for SHOW PLUGINS) */
/* const char* */
"InnoDB conflicting locks",
/* the plugin license (PLUGIN_LICENSE_XXX) */
/* int */
PLUGIN_LICENSE_GPL,
/* the function to invoke when plugin is loaded */
/* int (*)(void*); */
innodb_locks_init,
/* the function to invoke when plugin is unloaded */
/* int (*)(void*); */
i_s_common_deinit,
i_s_version, nullptr, nullptr, PACKAGE_VERSION,
MariaDB_PLUGIN_MATURITY_STABLE
};
namespace Show {
/* Fields of the dynamic table INFORMATION_SCHEMA.innodb_lock_waits */
static ST_FIELD_INFO innodb_lock_waits_fields_info[]=
{
#define IDX_REQUESTING_TRX_ID 0
Column("requesting_trx_id", ULonglong(), NOT_NULL),
#define IDX_REQUESTED_LOCK_ID 1
Column("requested_lock_id", Varchar(TRX_I_S_LOCK_ID_MAX_LEN + 1), NOT_NULL),
#define IDX_BLOCKING_TRX_ID 2
Column("blocking_trx_id", ULonglong(), NOT_NULL),
#define IDX_BLOCKING_LOCK_ID 3
Column("blocking_lock_id", Varchar(TRX_I_S_LOCK_ID_MAX_LEN + 1), NOT_NULL),
CEnd()
};
} // namespace Show
/*******************************************************************//**
Read data from cache buffer and fill the
INFORMATION_SCHEMA.innodb_lock_waits table with it.
@return 0 on success */
static
int
fill_innodb_lock_waits_from_cache(
/*==============================*/
THD* thd, /*!< in: used to call
schema_table_store_record() */
TABLE_LIST* tables, /*!< in/out: fill this table */
Item*)
{
ulint rows_num;
char requested_lock_id[TRX_I_S_LOCK_ID_MAX_LEN + 1];
char blocking_lock_id[TRX_I_S_LOCK_ID_MAX_LEN + 1];
ulint i;
DBUG_ENTER("fill_innodb_lock_waits_from_cache");
if (!trx_i_s_common_fill_table(thd, tables)) {
DBUG_RETURN(0);
}
struct cache
{
cache() { trx_i_s_cache_start_read(trx_i_s_cache); }
~cache() { trx_i_s_cache_end_read(trx_i_s_cache); }
} c;
Field** fields = tables->table->field;
rows_num = trx_i_s_cache_get_rows_used(trx_i_s_cache,
I_S_INNODB_LOCK_WAITS);
for (i = 0; i < rows_num; i++) {
i_s_lock_waits_row_t* row;
row = (i_s_lock_waits_row_t*)
trx_i_s_cache_get_nth_row(
trx_i_s_cache, I_S_INNODB_LOCK_WAITS, i);
/* requesting_trx_id */
OK(fields[IDX_REQUESTING_TRX_ID]->store(
row->requested_lock_row->lock_trx_id, true));
/* requested_lock_id */
OK(field_store_string(
fields[IDX_REQUESTED_LOCK_ID],
trx_i_s_create_lock_id(
row->requested_lock_row,
requested_lock_id,
sizeof(requested_lock_id))));
/* blocking_trx_id */
OK(fields[IDX_BLOCKING_TRX_ID]->store(
row->blocking_lock_row->lock_trx_id, true));
/* blocking_lock_id */
OK(field_store_string(
fields[IDX_BLOCKING_LOCK_ID],
trx_i_s_create_lock_id(
row->blocking_lock_row,
blocking_lock_id,
sizeof(blocking_lock_id))));
OK(schema_table_store_record(thd, tables->table));
}
DBUG_RETURN(0);
}
/*******************************************************************//**
Bind the dynamic table INFORMATION_SCHEMA.innodb_lock_waits
@return 0 on success */
static
int
innodb_lock_waits_init(
/*===================*/
void* p) /*!< in/out: table schema object */
{
ST_SCHEMA_TABLE* schema;
DBUG_ENTER("innodb_lock_waits_init");
schema = (ST_SCHEMA_TABLE*) p;
schema->fields_info = Show::innodb_lock_waits_fields_info;
schema->fill_table = fill_innodb_lock_waits_from_cache;
DBUG_RETURN(0);
}
struct st_maria_plugin i_s_innodb_lock_waits =
{
/* the plugin type (a MYSQL_XXX_PLUGIN value) */
/* int */
MYSQL_INFORMATION_SCHEMA_PLUGIN,
/* pointer to type-specific plugin descriptor */
/* void* */
&i_s_info,
/* plugin name */
/* const char* */
"INNODB_LOCK_WAITS",
/* plugin author (for SHOW PLUGINS) */
/* const char* */
plugin_author,
/* general descriptive text (for SHOW PLUGINS) */
/* const char* */
"InnoDB which lock is blocking which",
/* the plugin license (PLUGIN_LICENSE_XXX) */
/* int */
PLUGIN_LICENSE_GPL,
/* the function to invoke when plugin is loaded */
/* int (*)(void*); */
innodb_lock_waits_init,
/* the function to invoke when plugin is unloaded */
/* int (*)(void*); */
i_s_common_deinit,
i_s_version, nullptr, nullptr, PACKAGE_VERSION,
MariaDB_PLUGIN_MATURITY_STABLE
};
namespace Show {
/* Fields of the dynamic table information_schema.innodb_cmp. */
static ST_FIELD_INFO i_s_cmp_fields_info[] =
{
Column("page_size", SLong(5),NOT_NULL, "Compressed Page Size"),
Column("compress_ops", SLong(), NOT_NULL, "Total Number of Compressions"),
Column("compress_ops_ok",SLong(), NOT_NULL, "Total Number of "
"Successful Compressions"),
Column("compress_time", SLong(), NOT_NULL, "Total Duration of "
"Compressions, in Seconds"),
Column("uncompress_ops", SLong(), NOT_NULL, "Total Number of Decompressions"),
Column("uncompress_time",SLong(), NOT_NULL, "Total Duration of "
"Decompressions, in Seconds"),
CEnd(),
};
} // namespace Show
/*******************************************************************//**
Fill the dynamic table information_schema.innodb_cmp or
innodb_cmp_reset.
@return 0 on success, 1 on failure */
static
int
i_s_cmp_fill_low(
/*=============*/
THD* thd, /*!< in: thread */
TABLE_LIST* tables, /*!< in/out: tables to fill */
Item* , /*!< in: condition (ignored) */
ibool reset) /*!< in: TRUE=reset cumulated counts */
{
TABLE* table = (TABLE*) tables->table;
int status = 0;
DBUG_ENTER("i_s_cmp_fill_low");
/* deny access to non-superusers */
if (check_global_access(thd, PROCESS_ACL)) {
DBUG_RETURN(0);
}
RETURN_IF_INNODB_NOT_STARTED(tables->schema_table_name.str);
for (uint i = 0; i < PAGE_ZIP_SSIZE_MAX; i++) {
page_zip_stat_t* zip_stat = &page_zip_stat[i];
table->field[0]->store(UNIV_ZIP_SIZE_MIN << i);
/* The cumulated counts are not protected by any
mutex. Thus, some operation in page0zip.cc could
increment a counter between the time we read it and
clear it. We could introduce mutex protection, but it
could cause a measureable performance hit in
page0zip.cc. */
table->field[1]->store(zip_stat->compressed, true);
table->field[2]->store(zip_stat->compressed_ok, true);
table->field[3]->store(zip_stat->compressed_usec / 1000000,