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ea37b14409
This is joint work with Thirunarayanan Balathandayuthapani.
The MDL interface between InnoDB and the rest of the server
(in storage/innobase/dict/dict0dict.cc and in include/)
is my work, while most everything else is Thiru's.
The collection of InnoDB persistent statistics and the
defragmentation were not refactored to use MDL. They will
keep relying on lower-level interlocking with
fil_check_pending_operations().
The purge of transaction history and the background operations on
fulltext indexes will use MDL. We will revert
commit 2c4844c9e7
(MDEV-17813) because thanks to MDL, purge cannot conflict
with DDL operations anymore. For a similar reason, we will remove
the MDEV-16222 test case from gcol.innodb_virtual_debug_purge.
Purge is essentially replacing all use of the global dict_sys.latch
with MDL. Purge will skip the undo log records for tables whose names
start with #sql-ib or #sql2. Theoretically, such tables might
be renamed back to visible table names if TRUNCATE fails to
create a new table, or the final rename in ALTER TABLE...ALGORITHM=COPY
fails. In that case, purge could permanently leave some garbage
in the table. Such garbage will be tolerated; the table would not
be considered corrupted.
To avoid repeated MDL releases and acquisitions,
trx_purge_attach_undo_recs() will sort undo log records by table_id,
and purge_node_t will keep the MDL and table handle open for multiple
successive undo log records.
get_purge_table(): A new accessor, used during the purge of
history for indexed virtual columns. This interface should ideally
not exist at all.
thd_mdl_context(): Accessor of THD::mdl_context.
Wrapped in a new thd_mdl_service.
dict_get_db_name_len(): Define inline.
dict_acquire_mdl_shared(): Acquire explicit shared MDL on a table name
if needed.
dict_table_open_on_id(): Return MDL_ticket, if requested.
dict_table_close(): Release MDL ticket, if requested.
dict_fts_index_syncing(), dict_index_t::index_fts_syncing: Remove.
row_drop_table_for_mysql() no longer needs to check these, because
MDL guarantees that a fulltext index sync will not be in progress
while MDL_EXCLUSIVE is protecting a DDL operation.
dict_table_t::parse_name(): Parse the table name for acquiring MDL.
purge_node_t::undo_recs: Change the type to std::list<trx_purge_rec_t*>
(different container, and storing also roll_ptr).
purge_node_t: Add mdl_ticket, last_table_id, purge_thd, mdl_hold_recs
for acquiring MDL and for keeping the table open across multiple
undo log records.
purge_vcol_info_t, row_purge_store_vsec_cur(), row_purge_restore_vsec_cur():
Remove. We will acquire the MDL earlier.
purge_sys_t::heap: Added, for reading undo log records.
fts_sync_during_ddl(): Invoked during ALGORITHM=INPLACE operations
to ensure that fts_sync_table() will not conflict with MDL_EXCLUSIVE.
Uses fts_t::sync_message for bookkeeping.
255 lines
6.9 KiB
Text
255 lines
6.9 KiB
Text
/* Copyright (c) 2009, 2010, Oracle and/or its affiliates.
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Copyright (c) 2012, 2019, MariaDB Corporation.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
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/* support for Services */
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#include <service_versions.h>
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#include <mysql/service_wsrep.h>
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#include <mysql/service_thd_mdl.h>
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struct st_service_ref {
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const char *name;
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uint version;
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void *service;
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};
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static struct my_snprintf_service_st my_snprintf_handler = {
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my_snprintf,
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my_vsnprintf
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};
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static struct thd_alloc_service_st thd_alloc_handler= {
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thd_alloc,
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thd_calloc,
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thd_strdup,
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thd_strmake,
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thd_memdup,
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thd_make_lex_string
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};
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static struct thd_wait_service_st thd_wait_handler= {
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thd_wait_begin,
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thd_wait_end
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};
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static struct progress_report_service_st progress_report_handler= {
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thd_progress_init,
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thd_progress_report,
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thd_progress_next_stage,
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thd_progress_end,
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set_thd_proc_info
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};
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static struct kill_statement_service_st thd_kill_statement_handler= {
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thd_kill_level
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};
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static struct thd_timezone_service_st thd_timezone_handler= {
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thd_TIME_to_gmt_sec,
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thd_gmt_sec_to_TIME
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};
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static struct my_sha2_service_st my_sha2_handler = {
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my_sha224,
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my_sha224_multi,
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my_sha224_context_size,
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my_sha224_init,
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my_sha224_input,
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my_sha224_result,
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my_sha256,
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my_sha256_multi,
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my_sha256_context_size,
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my_sha256_init,
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my_sha256_input,
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my_sha256_result,
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my_sha384,
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my_sha384_multi,
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my_sha384_context_size,
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my_sha384_init,
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my_sha384_input,
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my_sha384_result,
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my_sha512,
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my_sha512_multi,
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my_sha512_context_size,
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my_sha512_init,
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my_sha512_input,
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my_sha512_result,
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};
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static struct my_sha1_service_st my_sha1_handler = {
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my_sha1,
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my_sha1_multi,
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my_sha1_context_size,
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my_sha1_init,
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my_sha1_input,
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my_sha1_result
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};
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static struct my_md5_service_st my_md5_handler = {
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my_md5,
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my_md5_multi,
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my_md5_context_size,
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my_md5_init,
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my_md5_input,
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my_md5_result
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};
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static struct logger_service_st logger_service_handler= {
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logger_init_mutexes,
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logger_open,
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logger_close,
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logger_vprintf,
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logger_printf,
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logger_write,
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logger_rotate
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};
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static struct thd_autoinc_service_st thd_autoinc_handler= {
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thd_get_autoinc
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};
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static struct thd_rnd_service_st thd_rnd_handler= {
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thd_rnd,
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thd_create_random_password
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};
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static struct base64_service_st base64_handler= {
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my_base64_needed_encoded_length,
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my_base64_encode_max_arg_length,
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my_base64_needed_decoded_length,
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my_base64_decode_max_arg_length,
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my_base64_encode,
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my_base64_decode
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};
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static struct thd_error_context_service_st thd_error_context_handler= {
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thd_get_error_message,
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thd_get_error_number,
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thd_get_error_row,
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thd_inc_error_row,
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thd_get_error_context_description
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};
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static struct wsrep_service_st wsrep_handler = {
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get_wsrep_recovery,
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wsrep_consistency_check,
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wsrep_is_wsrep_xid,
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wsrep_xid_seqno,
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wsrep_xid_uuid,
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wsrep_on,
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wsrep_prepare_key_for_innodb,
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wsrep_thd_LOCK,
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wsrep_thd_UNLOCK,
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wsrep_thd_query,
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wsrep_thd_retry_counter,
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wsrep_thd_ignore_table,
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wsrep_thd_trx_seqno,
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wsrep_thd_auto_increment_variables,
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wsrep_thd_is_aborting,
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wsrep_set_data_home_dir,
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wsrep_thd_is_BF,
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wsrep_thd_is_local,
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wsrep_thd_self_abort,
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wsrep_thd_append_key,
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wsrep_thd_client_state_str,
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wsrep_thd_client_mode_str,
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wsrep_thd_transaction_state_str,
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wsrep_thd_transaction_id,
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wsrep_thd_bf_abort,
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wsrep_thd_order_before,
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wsrep_handle_SR_rollback,
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wsrep_thd_skip_locking,
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wsrep_get_sr_table_name,
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wsrep_get_debug,
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wsrep_commit_ordered,
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wsrep_thd_is_applying,
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wsrep_thd_has_ignored_error,
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wsrep_thd_set_ignored_error
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};
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static struct thd_specifics_service_st thd_specifics_handler=
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{
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thd_key_create,
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thd_key_delete,
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thd_getspecific,
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thd_setspecific
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};
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static struct encryption_scheme_service_st encryption_scheme_handler=
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{
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encryption_scheme_encrypt,
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encryption_scheme_decrypt
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};
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static struct my_crypt_service_st crypt_handler=
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{
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my_aes_crypt_init,
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my_aes_crypt_update,
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my_aes_crypt_finish,
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my_aes_crypt,
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my_aes_get_size,
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my_aes_ctx_size,
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my_random_bytes
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};
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static struct my_print_error_service_st my_print_error_handler=
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{
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my_error,
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my_printf_error,
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my_printv_error
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};
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struct json_service_st json_handler=
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{
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json_type,
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json_get_array_item,
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json_get_object_key,
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json_get_object_nkey,
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json_escape_string,
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json_unescape_json
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};
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static struct thd_mdl_service_st thd_mdl_handler=
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{
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thd_mdl_context
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};
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static struct st_service_ref list_of_services[]=
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{
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{ "base64_service", VERSION_base64, &base64_handler },
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{ "debug_sync_service", VERSION_debug_sync, 0 }, // updated in plugin_init()
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{ "encryption_scheme_service", VERSION_encryption_scheme, &encryption_scheme_handler },
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{ "encryption_service", VERSION_encryption, &encryption_handler },
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{ "logger_service", VERSION_logger, &logger_service_handler },
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{ "my_crypt_service", VERSION_my_crypt, &crypt_handler},
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{ "my_md5_service", VERSION_my_md5, &my_md5_handler},
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{ "my_print_error_service", VERSION_my_print_error, &my_print_error_handler},
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{ "my_sha1_service", VERSION_my_sha1, &my_sha1_handler},
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{ "my_sha2_service", VERSION_my_sha2, &my_sha2_handler},
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{ "my_snprintf_service", VERSION_my_snprintf, &my_snprintf_handler },
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{ "progress_report_service", VERSION_progress_report, &progress_report_handler },
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{ "thd_alloc_service", VERSION_thd_alloc, &thd_alloc_handler },
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{ "thd_autoinc_service", VERSION_thd_autoinc, &thd_autoinc_handler },
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{ "thd_error_context_service", VERSION_thd_error_context, &thd_error_context_handler },
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{ "thd_kill_statement_service", VERSION_kill_statement, &thd_kill_statement_handler },
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{ "thd_rnd_service", VERSION_thd_rnd, &thd_rnd_handler },
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{ "thd_specifics_service", VERSION_thd_specifics, &thd_specifics_handler },
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{ "thd_timezone_service", VERSION_thd_timezone, &thd_timezone_handler },
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{ "thd_wait_service", VERSION_thd_wait, &thd_wait_handler },
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{ "wsrep_service", VERSION_wsrep, &wsrep_handler },
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{ "json_service", VERSION_json, &json_handler },
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{ "thd_mdl_service", VERSION_thd_mdl, &thd_mdl_handler }
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};
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