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59caf2c3c1
The parameter --innodb-sync-debug, which is disabled by default, aims to find potential deadlocks in InnoDB. When the parameter is enabled, lots of tests failed. Most of these failures were due to bogus diagnostics. But, as part of this fix, we are also fixing a bug in error handling code and removing dead code, and fixing cases where an uninitialized mutex was being locked and unlocked. dict_create_foreign_constraints_low(): Remove an extraneous mutex_exit() call that could cause corruption in an error handling path. Also, do not unnecessarily acquire dict_foreign_err_mutex. Its only purpose is to control concurrent access to dict_foreign_err_file. row_ins_foreign_trx_print(): Replace a redundant condition with a debug assertion. srv_dict_tmpfile, srv_dict_tmpfile_mutex: Remove. The temporary file is never being written to or read from. log_free_check(): Allow SYNC_FTS_CACHE (fts_cache_t::lock) to be held. ha_innobase::inplace_alter_table(), row_merge_insert_index_tuples(): Assert that no unexpected latches are being held. sync_latch_meta_init(): Properly initialize dict_operation_lock_key at SYNC_DICT_OPERATION. dict_sys->mutex is SYNC_DICT, and the now-removed SRV_DICT_TMPFILE was wrongly registered at SYNC_DICT_OPERATION. buf_block_init(): Correctly register buf_block_t::debug_latch. It was previously misleadingly reported as LATCH_ID_DICT_FOREIGN_ERR. latch_level_t: Correct the relative latching order of SYNC_IBUF_PESS_INSERT_MUTEX,SYNC_INDEX_TREE and SYNC_FILE_FORMAT_TAG,SYNC_DICT_OPERATION to avoid bogus failures. row_drop_table_for_mysql(): Avoid accessing btr_defragment_mutex if the defragmentation thread has not been started. This is the case during fts_drop_orphaned_tables() in recv_recovery_rollback_active(). fil_space_destroy_crypt_data(): Avoid acquiring fil_crypt_threads_mutex when it is uninitialized. We may have created crypt_data before the mutex was created, and the mutex creation would be skipped if InnoDB startup failed or --innodb-read-only was specified.
271 lines
8.2 KiB
C++
271 lines
8.2 KiB
C++
/*****************************************************************************
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Copyright (c) 1995, 2016, Oracle and/or its affiliates. All Rights Reserved.
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Copyright (c) 2008, Google Inc.
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Portions of this file contain modifications contributed and copyrighted by
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Google, Inc. Those modifications are gratefully acknowledged and are described
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briefly in the InnoDB documentation. The contributions by Google are
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incorporated with their permission, and subject to the conditions contained in
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the file COPYING.Google.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
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*****************************************************************************/
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/**************************************************//**
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@file sync/sync0sync.cc
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Mutex, the basic synchronization primitive
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Created 9/5/1995 Heikki Tuuri
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*******************************************************/
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#include "univ.i"
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#include "sync0rw.h"
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#include "sync0sync.h"
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#ifdef UNIV_PFS_MUTEX
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/* Key to register autoinc_mutex with performance schema */
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mysql_pfs_key_t autoinc_mutex_key;
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mysql_pfs_key_t buffer_block_mutex_key;
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mysql_pfs_key_t buf_pool_mutex_key;
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mysql_pfs_key_t buf_pool_zip_mutex_key;
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mysql_pfs_key_t cache_last_read_mutex_key;
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mysql_pfs_key_t dict_foreign_err_mutex_key;
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mysql_pfs_key_t dict_sys_mutex_key;
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mysql_pfs_key_t file_format_max_mutex_key;
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mysql_pfs_key_t fil_system_mutex_key;
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mysql_pfs_key_t flush_list_mutex_key;
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mysql_pfs_key_t fts_bg_threads_mutex_key;
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mysql_pfs_key_t fts_delete_mutex_key;
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mysql_pfs_key_t fts_optimize_mutex_key;
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mysql_pfs_key_t fts_doc_id_mutex_key;
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mysql_pfs_key_t fts_pll_tokenize_mutex_key;
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mysql_pfs_key_t hash_table_mutex_key;
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mysql_pfs_key_t ibuf_bitmap_mutex_key;
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mysql_pfs_key_t ibuf_mutex_key;
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mysql_pfs_key_t ibuf_pessimistic_insert_mutex_key;
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mysql_pfs_key_t log_sys_mutex_key;
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mysql_pfs_key_t log_sys_write_mutex_key;
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mysql_pfs_key_t log_cmdq_mutex_key;
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mysql_pfs_key_t log_flush_order_mutex_key;
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mysql_pfs_key_t mutex_list_mutex_key;
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mysql_pfs_key_t recalc_pool_mutex_key;
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mysql_pfs_key_t page_cleaner_mutex_key;
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mysql_pfs_key_t purge_sys_pq_mutex_key;
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mysql_pfs_key_t recv_sys_mutex_key;
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mysql_pfs_key_t recv_writer_mutex_key;
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mysql_pfs_key_t redo_rseg_mutex_key;
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mysql_pfs_key_t noredo_rseg_mutex_key;
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mysql_pfs_key_t page_zip_stat_per_index_mutex_key;
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# ifdef UNIV_DEBUG
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mysql_pfs_key_t sync_thread_mutex_key;
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mysql_pfs_key_t rw_lock_debug_mutex_key;
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# endif /* UNIV_DEBUG */
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mysql_pfs_key_t rtr_active_mutex_key;
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mysql_pfs_key_t rtr_match_mutex_key;
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mysql_pfs_key_t rtr_path_mutex_key;
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mysql_pfs_key_t rtr_ssn_mutex_key;
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mysql_pfs_key_t rw_lock_list_mutex_key;
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mysql_pfs_key_t rw_lock_mutex_key;
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mysql_pfs_key_t srv_innodb_monitor_mutex_key;
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mysql_pfs_key_t srv_misc_tmpfile_mutex_key;
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mysql_pfs_key_t srv_monitor_file_mutex_key;
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mysql_pfs_key_t buf_dblwr_mutex_key;
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mysql_pfs_key_t trx_undo_mutex_key;
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mysql_pfs_key_t trx_mutex_key;
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mysql_pfs_key_t trx_pool_mutex_key;
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mysql_pfs_key_t trx_pool_manager_mutex_key;
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mysql_pfs_key_t lock_mutex_key;
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mysql_pfs_key_t lock_wait_mutex_key;
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mysql_pfs_key_t trx_sys_mutex_key;
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mysql_pfs_key_t srv_sys_mutex_key;
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mysql_pfs_key_t srv_threads_mutex_key;
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mysql_pfs_key_t event_mutex_key;
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mysql_pfs_key_t event_manager_mutex_key;
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mysql_pfs_key_t sync_array_mutex_key;
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mysql_pfs_key_t thread_mutex_key;
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mysql_pfs_key_t zip_pad_mutex_key;
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mysql_pfs_key_t row_drop_list_mutex_key;
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#endif /* UNIV_PFS_MUTEX */
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#ifdef UNIV_PFS_RWLOCK
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mysql_pfs_key_t btr_search_latch_key;
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mysql_pfs_key_t buf_block_lock_key;
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# ifdef UNIV_DEBUG
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mysql_pfs_key_t buf_block_debug_latch_key;
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# endif /* UNIV_DEBUG */
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mysql_pfs_key_t checkpoint_lock_key;
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mysql_pfs_key_t dict_operation_lock_key;
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mysql_pfs_key_t dict_table_stats_key;
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mysql_pfs_key_t hash_table_locks_key;
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mysql_pfs_key_t index_tree_rw_lock_key;
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mysql_pfs_key_t index_online_log_key;
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mysql_pfs_key_t fil_space_latch_key;
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mysql_pfs_key_t fts_cache_rw_lock_key;
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mysql_pfs_key_t fts_cache_init_rw_lock_key;
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mysql_pfs_key_t trx_i_s_cache_lock_key;
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mysql_pfs_key_t trx_purge_latch_key;
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#endif /* UNIV_PFS_RWLOCK */
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/** For monitoring active mutexes */
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MutexMonitor* mutex_monitor;
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/**
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Prints wait info of the sync system.
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@param file - where to print */
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static
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void
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sync_print_wait_info(FILE* file)
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{
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fprintf(file,
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"RW-shared spins " UINT64PF ", rounds " UINT64PF ","
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" OS waits " UINT64PF "\n"
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"RW-excl spins " UINT64PF ", rounds " UINT64PF ","
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" OS waits " UINT64PF "\n"
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"RW-sx spins " UINT64PF ", rounds " UINT64PF ","
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" OS waits " UINT64PF "\n",
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(ib_uint64_t) rw_lock_stats.rw_s_spin_wait_count,
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(ib_uint64_t) rw_lock_stats.rw_s_spin_round_count,
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(ib_uint64_t) rw_lock_stats.rw_s_os_wait_count,
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(ib_uint64_t) rw_lock_stats.rw_x_spin_wait_count,
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(ib_uint64_t) rw_lock_stats.rw_x_spin_round_count,
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(ib_uint64_t) rw_lock_stats.rw_x_os_wait_count,
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(ib_uint64_t) rw_lock_stats.rw_sx_spin_wait_count,
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(ib_uint64_t) rw_lock_stats.rw_sx_spin_round_count,
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(ib_uint64_t) rw_lock_stats.rw_sx_os_wait_count);
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fprintf(file,
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"Spin rounds per wait: %.2f RW-shared,"
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" %.2f RW-excl, %.2f RW-sx\n",
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(double) rw_lock_stats.rw_s_spin_round_count /
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(rw_lock_stats.rw_s_spin_wait_count
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? rw_lock_stats.rw_s_spin_wait_count : 1),
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(double) rw_lock_stats.rw_x_spin_round_count /
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(rw_lock_stats.rw_x_spin_wait_count
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? rw_lock_stats.rw_x_spin_wait_count : 1),
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(double) rw_lock_stats.rw_sx_spin_round_count /
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(rw_lock_stats.rw_sx_spin_wait_count
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? rw_lock_stats.rw_sx_spin_wait_count : 1));
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}
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/**
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Prints info of the sync system.
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@param file - where to print */
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void
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sync_print(FILE* file)
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{
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#ifdef UNIV_DEBUG
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rw_lock_list_print_info(file);
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#endif /* UNIV_DEBUG */
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sync_array_print(file);
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sync_print_wait_info(file);
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}
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/** Print the filename "basename" e.g., p = "/a/b/c/d/e.cc" -> p = "e.cc"
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@param[in] filename Name from where to extract the basename
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@return the basename */
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const char*
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sync_basename(const char* filename)
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{
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const char* ptr = filename + strlen(filename) - 1;
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while (ptr > filename && *ptr != '/' && *ptr != '\\') {
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--ptr;
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}
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++ptr;
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return(ptr);
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}
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/** String representation of the filename and line number where the
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latch was created
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@param[in] id Latch ID
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@param[in] created Filename and line number where it was crated
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@return the string representation */
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std::string
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sync_mutex_to_string(
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latch_id_t id,
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const std::string& created)
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{
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std::ostringstream msg;
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msg << "Mutex " << sync_latch_get_name(id) << " "
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<< "created " << created;
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return(msg.str());
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}
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/** Enable the mutex monitoring */
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void
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MutexMonitor::enable()
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{
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/** Note: We don't add any latch meta-data after startup. Therefore
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there is no need to use a mutex here. */
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LatchMetaData::iterator end = latch_meta.end();
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for (LatchMetaData::iterator it = latch_meta.begin(); it != end; ++it) {
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if (*it != NULL) {
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(*it)->get_counter()->enable();
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}
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}
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}
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/** Disable the mutex monitoring */
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void
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MutexMonitor::disable()
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{
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/** Note: We don't add any latch meta-data after startup. Therefore
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there is no need to use a mutex here. */
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LatchMetaData::iterator end = latch_meta.end();
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for (LatchMetaData::iterator it = latch_meta.begin(); it != end; ++it) {
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if (*it != NULL) {
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(*it)->get_counter()->disable();
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}
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}
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}
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/** Reset the mutex monitoring counters */
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void
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MutexMonitor::reset()
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{
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/** Note: We don't add any latch meta-data after startup. Therefore
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there is no need to use a mutex here. */
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LatchMetaData::iterator end = latch_meta.end();
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for (LatchMetaData::iterator it = latch_meta.begin(); it != end; ++it) {
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if (*it != NULL) {
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(*it)->get_counter()->reset();
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}
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}
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mutex_enter(&rw_lock_list_mutex);
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for (rw_lock_t* rw_lock = UT_LIST_GET_FIRST(rw_lock_list);
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rw_lock != NULL;
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rw_lock = UT_LIST_GET_NEXT(list, rw_lock)) {
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rw_lock->count_os_wait = 0;
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}
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mutex_exit(&rw_lock_list_mutex);
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}
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