/* Copyright (c) 2010, 2018, Oracle and/or its affiliates. All rights reserved.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.

   This program is also distributed with certain software (including
   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have included with MySQL.

   Without limiting anything contained in the foregoing, this file,
   which is part of C Driver for MySQL (Connector/C), is also subject to the
   Universal FOSS Exception, version 1.0, a copy of which can be found at
   http://oss.oracle.com/licenses/universal-foss-exception.

   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, version 2.0, 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 St, Fifth Floor, Boston, MA  02110-1301  USA */

#ifndef MYSQLD_INCLUDED
#define MYSQLD_INCLUDED

#include "my_global.h" /* MYSQL_PLUGIN_IMPORT, FN_REFLEN, FN_EXTLEN */
#include "my_bitmap.h"                     /* MY_BITMAP */
#include "my_decimal.h"                         /* my_decimal */
#include "mysql_com.h"                     /* SERVER_VERSION_LENGTH */
#include "my_atomic.h"                     /* my_atomic_add64 */
#include "sql_cmd.h"                       /* SQLCOM_END */
#include "my_thread_local.h"               /* my_get_thread_local */
#include "my_thread.h"                     /* my_thread_attr_t */
#include "atomic_class.h"                  /* Atomic_int32 */

class THD;
struct handlerton;
class Time_zone;
template <uint default_width> class Bitmap;

typedef struct st_mysql_const_lex_string LEX_CSTRING;
typedef struct st_mysql_show_var SHOW_VAR;

/*
  This forward declaration is used from C files where the real
  definition is included before.  Since C does not allow repeated
  typedef declarations, even when identical, the definition may not be
  repeated.
*/
#ifndef CHARSET_INFO_DEFINED
typedef struct charset_info_st CHARSET_INFO;
#endif  /* CHARSET_INFO_DEFINED */

#if MAX_INDEXES <= 64
typedef Bitmap<64>  key_map;          /* Used for finding keys */
#elif MAX_INDEXES > 255
#error "MAX_INDEXES values greater than 255 is not supported."
#else
typedef Bitmap<((MAX_INDEXES+7)/8*8)> key_map; /* Used for finding keys */
#endif

	/* Bits from testflag */
#define TEST_PRINT_CACHED_TABLES 1
#define TEST_NO_KEY_GROUP	 2
#define TEST_MIT_THREAD		4
/*
  TEST_BLOCKING is made obsolete and is not used any
  where in the code base and is retained here so that
  the other bit flag values are not changed.
*/
#define OBSOLETE_TEST_BLOCKING	8
#define TEST_KEEP_TMP_TABLES	16
#define TEST_READCHECK		64	/**< Force use of readcheck */
#define TEST_NO_EXTRA		128
#define TEST_CORE_ON_SIGNAL	256	/**< Give core if signal */
#define TEST_NO_STACKTRACE	512
#define TEST_SIGINT	        1024    /**< Allow sigint on threads */
#define TEST_SYNCHRONIZATION    2048    /**< get server to do sleep in
                                           some places */
#define TEST_DO_QUICK_LEAK_CHECK 4096   /**< Do Valgrind leak check for
                                           each command. */

#define SPECIAL_NO_NEW_FUNC	2		/* Skip new functions */
#define SPECIAL_SKIP_SHOW_DB    4               /* Don't allow 'show db' */
#define SPECIAL_NO_RESOLVE     64		/* Don't use gethostname */
#define SPECIAL_NO_HOST_CACHE	512		/* Don't cache hosts */
#define SPECIAL_SHORT_LOG_FORMAT 1024

/* Function prototypes */
#ifndef EMBEDDED_LIBRARY
void kill_mysql(void);
#endif
void refresh_status(THD *thd);
bool is_secure_file_path(char *path);
int handle_early_options();
void adjust_related_options(ulong *requested_open_files);
ulong sql_rnd_with_mutex();

// These are needed for unit testing.
void set_remaining_args(int argc, char **argv);
int init_common_variables();
void my_init_signals();
bool gtid_server_init();
void gtid_server_cleanup();
const char *fixup_enforce_gtid_consistency_command_line(char *value_arg);

extern "C" MYSQL_PLUGIN_IMPORT CHARSET_INFO *system_charset_info;
extern MYSQL_PLUGIN_IMPORT CHARSET_INFO *files_charset_info ;
extern MYSQL_PLUGIN_IMPORT CHARSET_INFO *national_charset_info;
extern MYSQL_PLUGIN_IMPORT CHARSET_INFO *table_alias_charset;

enum enum_server_operational_state
{
  SERVER_BOOTING,      /* Server is not operational. It is starting */
  SERVER_OPERATING,    /* Server is fully initialized and operating */
  SERVER_SHUTTING_DOWN /* erver is shutting down */
};
enum_server_operational_state get_server_state();

/**
  Character set of the buildin error messages loaded from errmsg.sys.
*/
extern CHARSET_INFO *error_message_charset_info;

extern CHARSET_INFO *character_set_filesystem;

extern MY_BITMAP temp_pool;
extern bool opt_large_files, server_id_supplied;
extern bool opt_update_log, opt_bin_log;
extern my_bool opt_log_slave_updates;
extern my_bool opt_log_unsafe_statements;
extern bool opt_general_log, opt_slow_log, opt_general_log_raw;
extern my_bool opt_backup_history_log;
extern my_bool opt_backup_progress_log;
extern ulonglong log_output_options;
extern ulong log_backup_output_options;
extern my_bool opt_log_queries_not_using_indexes;
extern ulong opt_log_throttle_queries_not_using_indexes;
extern bool opt_disable_networking, opt_skip_show_db;
extern bool opt_skip_name_resolve;
extern my_bool opt_help;
extern my_bool opt_verbose;
extern bool opt_ignore_builtin_innodb;
extern my_bool opt_character_set_client_handshake;
extern MYSQL_PLUGIN_IMPORT bool volatile abort_loop;
extern my_bool opt_bootstrap, opt_initialize;
extern my_bool opt_safe_user_create;
extern my_bool opt_safe_show_db, opt_local_infile, opt_myisam_use_mmap;
extern my_bool opt_slave_compressed_protocol, use_temp_pool;
extern ulong slave_exec_mode_options;
extern ulonglong slave_type_conversions_options;
extern my_bool read_only, opt_readonly;
extern my_bool super_read_only, opt_super_readonly;
extern my_bool lower_case_file_system;
extern ulonglong slave_rows_search_algorithms_options;
extern my_bool opt_require_secure_transport;

#ifdef HAVE_REPLICATION
extern my_bool opt_slave_preserve_commit_order;
#endif

#ifndef DBUG_OFF
extern uint slave_rows_last_search_algorithm_used;
#endif
extern ulong mts_parallel_option;
extern my_bool opt_enable_named_pipe, opt_sync_frm, opt_allow_suspicious_udfs;
#ifdef _WIN32
extern mysql_rwlock_t LOCK_named_pipe_full_access_group;
extern char *named_pipe_full_access_group;
#endif
extern my_bool opt_secure_auth;
extern char* opt_secure_file_priv;
extern char* opt_secure_backup_file_priv;
extern size_t opt_secure_backup_file_priv_len;
extern my_bool opt_log_slow_admin_statements, opt_log_slow_slave_statements;
extern my_bool sp_automatic_privileges, opt_noacl;
extern my_bool opt_old_style_user_limits, trust_function_creators;
extern my_bool check_proxy_users, mysql_native_password_proxy_users, sha256_password_proxy_users;
extern uint opt_crash_binlog_innodb;
extern char *shared_memory_base_name, *mysqld_unix_port;
extern my_bool opt_enable_shared_memory;
extern char *default_tz_name;
extern Time_zone *default_tz;
extern char *default_storage_engine;
extern char *default_tmp_storage_engine;
extern ulong internal_tmp_disk_storage_engine;
extern bool opt_endinfo, using_udf_functions;
extern my_bool locked_in_memory;
extern bool opt_using_transactions;
extern ulong max_long_data_size;
extern ulong current_pid;
extern ulong expire_logs_days;
extern my_bool relay_log_recovery;
extern uint sync_binlog_period, sync_relaylog_period,
            sync_relayloginfo_period, sync_masterinfo_period,
            opt_mts_checkpoint_period, opt_mts_checkpoint_group;
extern ulong opt_tc_log_size, tc_log_max_pages_used, tc_log_page_size;
extern ulong tc_log_page_waits;
extern my_bool relay_log_purge, opt_innodb_safe_binlog, opt_innodb;
extern my_bool relay_log_recovery;
extern my_bool offline_mode;
extern my_bool opt_log_builtin_as_identified_by_password;
extern uint test_flags,select_errors,ha_open_options;
extern uint protocol_version, mysqld_port, dropping_tables;
extern ulong delay_key_write_options;
extern ulong opt_log_timestamps;
extern const char *timestamp_type_names[];
extern char *opt_general_logname, *opt_slow_logname, *opt_bin_logname,
            *opt_relay_logname;
extern char *opt_backup_history_logname, *opt_backup_progress_logname,
            *opt_backup_settings_name;
extern const char *log_output_str;
extern const char *log_backup_output_str;
extern char *mysql_home_ptr, *pidfile_name_ptr;
extern char *default_auth_plugin;
extern uint default_password_lifetime;
extern char *my_bind_addr_str;
extern char glob_hostname[FN_REFLEN], mysql_home[FN_REFLEN];
extern char pidfile_name[FN_REFLEN], system_time_zone[30], *opt_init_file;
extern char default_logfile_name[FN_REFLEN];
extern char *opt_tc_log_file;
/*Move UUID_LENGTH from item_strfunc.h*/
#define UUID_LENGTH (8+1+4+1+4+1+4+1+12)
extern char server_uuid[UUID_LENGTH+1];
extern const char *server_uuid_ptr;
extern const double log_10[309];
extern ulonglong keybuff_size;
extern ulonglong thd_startup_options;
extern ulong binlog_cache_use, binlog_cache_disk_use;
extern ulong binlog_stmt_cache_use, binlog_stmt_cache_disk_use;
extern ulong aborted_threads;
extern ulong delayed_insert_timeout;
extern ulong delayed_insert_limit, delayed_queue_size;
extern ulong delayed_insert_threads, delayed_insert_writes;
extern ulong delayed_rows_in_use,delayed_insert_errors;
extern Atomic_int32 slave_open_temp_tables;
extern ulong query_cache_size, query_cache_min_res_unit;
extern ulong slow_launch_time;
extern ulong table_cache_size, table_def_size;
extern ulong table_cache_size_per_instance, table_cache_instances;
extern MYSQL_PLUGIN_IMPORT ulong max_connections;
extern ulong max_digest_length;
extern ulong max_connect_errors, connect_timeout;
extern my_bool opt_slave_allow_batching;
extern my_bool allow_slave_start;
extern LEX_CSTRING reason_slave_blocked;
extern ulong slave_trans_retries;
extern uint  slave_net_timeout;
extern ulong opt_mts_slave_parallel_workers;
extern ulonglong opt_mts_pending_jobs_size_max;
extern uint max_user_connections;
extern ulong rpl_stop_slave_timeout;
extern my_bool log_bin_use_v1_row_events;
extern ulong what_to_log,flush_time;
extern ulong max_prepared_stmt_count, prepared_stmt_count;
extern ulong open_files_limit;
extern ulong binlog_cache_size, binlog_stmt_cache_size;
extern ulonglong max_binlog_cache_size, max_binlog_stmt_cache_size;
extern int32 opt_binlog_max_flush_queue_time;
extern long opt_binlog_group_commit_sync_delay;
extern ulong opt_binlog_group_commit_sync_no_delay_count;
extern ulong max_binlog_size, max_relay_log_size;
extern ulong slave_max_allowed_packet;
extern ulong opt_binlog_rows_event_max_size;
extern ulong binlog_checksum_options;
extern const char *binlog_checksum_type_names[];
extern my_bool opt_master_verify_checksum;
extern my_bool opt_slave_sql_verify_checksum;
extern uint32 gtid_executed_compression_period;
extern my_bool binlog_gtid_simple_recovery;
extern ulong binlog_error_action;
extern ulong locked_account_connection_count;
enum enum_binlog_error_action
{
  /// Ignore the error and let server continue without binlogging
  IGNORE_ERROR= 0,
  /// Abort the server
  ABORT_SERVER= 1
};
extern const char *binlog_error_action_list[];

extern ulong stored_program_cache_size;
extern ulong back_log;
extern char language[FN_REFLEN];
extern "C" MYSQL_PLUGIN_IMPORT ulong server_id;
extern time_t server_start_time, flush_status_time;
extern char *opt_mysql_tmpdir, mysql_charsets_dir[];
extern size_t mysql_unpacked_real_data_home_len;
extern MYSQL_PLUGIN_IMPORT MY_TMPDIR mysql_tmpdir_list;
extern const char *show_comp_option_name[];
extern const char *first_keyword, *binary_keyword;
extern MYSQL_PLUGIN_IMPORT const char  *my_localhost;
extern const char *myisam_recover_options_str;
extern const char *in_left_expr_name, *in_additional_cond, *in_having_cond;
extern SHOW_VAR status_vars[];
extern struct system_variables max_system_variables;
extern struct system_status_var global_status_var;
extern struct rand_struct sql_rand;
extern const char *opt_date_time_formats[];
extern handlerton *myisam_hton;
extern handlerton *heap_hton;
extern handlerton *innodb_hton;
extern uint opt_server_id_bits;
extern ulong opt_server_id_mask;
#ifdef WITH_NDBCLUSTER_STORAGE_ENGINE
/* engine specific hook, to be made generic */
extern int(*ndb_wait_setup_func)(ulong);
extern ulong opt_ndb_wait_setup;
#endif
extern const char *load_default_groups[];
extern struct my_option my_long_options[];
extern struct my_option my_long_early_options[];
extern bool mysqld_server_started;
extern "C" MYSQL_PLUGIN_IMPORT int orig_argc;
extern "C" MYSQL_PLUGIN_IMPORT char **orig_argv;
extern my_thread_attr_t connection_attrib;
extern my_bool old_mode;
extern my_bool avoid_temporal_upgrade;
extern LEX_STRING opt_init_connect, opt_init_slave;
extern char err_shared_dir[];
extern my_decimal decimal_zero;
#ifndef EMBEDDED_LIBRARY
extern ulong connection_errors_internal;
extern ulong connection_errors_peer_addr;
#endif
extern ulong log_warnings;
extern bool  opt_log_syslog_enable;
extern char *opt_log_syslog_tag;
#ifndef _WIN32
extern bool  opt_log_syslog_include_pid;
extern char *opt_log_syslog_facility;
#endif
/** The size of the host_cache. */
extern uint host_cache_size;
extern ulong log_error_verbosity;

extern bool opt_keyring_operations;
extern char *opt_keyring_migration_user;
extern char *opt_keyring_migration_host;
extern char *opt_keyring_migration_password;
extern char *opt_keyring_migration_socket;
extern char *opt_keyring_migration_source;
extern char *opt_keyring_migration_destination;
extern ulong opt_keyring_migration_port;
/**
  Variable to check if connection related options are set
  as part of keyring migration.
*/
extern bool migrate_connect_options;

/** System variable show_compatibility_56. */
extern my_bool show_compatibility_56;

#if defined(EMBEDDED_LIBRARY)
extern ulong max_allowed_packet;
extern ulong net_buffer_length;
#endif

extern LEX_CSTRING sql_statement_names[(uint) SQLCOM_END + 1];

/*
  THR_MALLOC is a key which will be used to set/get MEM_ROOT** for a thread,
  using my_set_thread_local()/my_get_thread_local().
*/
extern thread_local_key_t THR_MALLOC;
extern bool THR_MALLOC_initialized;

static inline MEM_ROOT ** my_thread_get_THR_MALLOC()
{
  DBUG_ASSERT(THR_MALLOC_initialized);
  return (MEM_ROOT**) my_get_thread_local(THR_MALLOC);
}

static inline int my_thread_set_THR_MALLOC(MEM_ROOT ** hdl)
{
  DBUG_ASSERT(THR_MALLOC_initialized);
  return my_set_thread_local(THR_MALLOC, hdl);
}

/*
  THR_THD is a key which will be used to set/get THD* for a thread,
  using my_set_thread_local()/my_get_thread_local().
*/
extern MYSQL_PLUGIN_IMPORT thread_local_key_t THR_THD;
extern bool THR_THD_initialized;

static inline THD * my_thread_get_THR_THD()
{
  DBUG_ASSERT(THR_THD_initialized);
  return (THD*)my_get_thread_local(THR_THD);
}

static inline int my_thread_set_THR_THD(THD *thd)
{
  DBUG_ASSERT(THR_THD_initialized);
  return my_set_thread_local(THR_THD, thd);
}

#ifdef HAVE_PSI_INTERFACE

C_MODE_START

extern PSI_mutex_key key_LOCK_tc;

#ifdef HAVE_OPENSSL
extern PSI_mutex_key key_LOCK_des_key_file;
#endif

extern PSI_mutex_key key_BINLOG_LOCK_commit;
extern PSI_mutex_key key_BINLOG_LOCK_commit_queue;
extern PSI_mutex_key key_BINLOG_LOCK_done;
extern PSI_mutex_key key_BINLOG_LOCK_flush_queue;
extern PSI_mutex_key key_BINLOG_LOCK_index;
extern PSI_mutex_key key_BINLOG_LOCK_log;
extern PSI_mutex_key key_BINLOG_LOCK_binlog_end_pos;
extern PSI_mutex_key key_BINLOG_LOCK_sync;
extern PSI_mutex_key key_BINLOG_LOCK_sync_queue;
extern PSI_mutex_key key_BINLOG_LOCK_xids;
extern PSI_mutex_key
  key_hash_filo_lock,
  key_LOCK_crypt, key_LOCK_error_log,
  key_LOCK_gdl, key_LOCK_global_system_variables,
  key_LOCK_lock_db, key_LOCK_logger, key_LOCK_manager,
  key_LOCK_prepared_stmt_count,
  key_LOCK_server_started, key_LOCK_status,
  key_LOCK_sql_slave_skip_counter,
  key_LOCK_slave_net_timeout,
  key_LOCK_slave_trans_dep_tracker,
  key_LOCK_table_share, key_LOCK_thd_data, key_LOCK_thd_sysvar,
  key_LOCK_user_conn, key_LOCK_uuid_generator, key_LOG_LOCK_log,
  key_master_info_data_lock, key_master_info_run_lock,
  key_master_info_sleep_lock, key_master_info_thd_lock,
  key_mutex_slave_reporting_capability_err_lock, key_relay_log_info_data_lock,
  key_relay_log_info_sleep_lock, key_relay_log_info_thd_lock,
  key_relay_log_info_log_space_lock, key_relay_log_info_run_lock,
  key_mutex_slave_parallel_pend_jobs, key_mutex_mts_temp_tables_lock,
  key_mutex_slave_parallel_worker,
  key_mutex_slave_parallel_worker_count,
  key_structure_guard_mutex, key_TABLE_SHARE_LOCK_ha_data,
  key_LOCK_error_messages,
  key_LOCK_log_throttle_qni, key_LOCK_query_plan, key_LOCK_thd_query,
  key_LOCK_cost_const, key_LOCK_current_cond,
  key_LOCK_keyring_operations;
extern PSI_mutex_key key_RELAYLOG_LOCK_commit;
extern PSI_mutex_key key_RELAYLOG_LOCK_commit_queue;
extern PSI_mutex_key key_RELAYLOG_LOCK_done;
extern PSI_mutex_key key_RELAYLOG_LOCK_flush_queue;
extern PSI_mutex_key key_RELAYLOG_LOCK_index;
extern PSI_mutex_key key_RELAYLOG_LOCK_log;
extern PSI_mutex_key key_RELAYLOG_LOCK_sync;
extern PSI_mutex_key key_RELAYLOG_LOCK_sync_queue;
extern PSI_mutex_key key_RELAYLOG_LOCK_xids;
extern PSI_mutex_key key_LOCK_sql_rand;
extern PSI_mutex_key key_gtid_ensure_index_mutex;
extern PSI_mutex_key key_mts_temp_table_LOCK;
extern PSI_mutex_key key_LOCK_reset_gtid_table;
extern PSI_mutex_key key_LOCK_compress_gtid_table;
extern PSI_mutex_key key_mts_gaq_LOCK;
extern PSI_mutex_key key_thd_timer_mutex;
extern PSI_mutex_key key_LOCK_offline_mode;
extern PSI_mutex_key key_LOCK_default_password_lifetime;

#ifdef HAVE_REPLICATION
extern PSI_mutex_key key_commit_order_manager_mutex;
extern PSI_mutex_key key_mutex_slave_worker_hash;
#endif

extern PSI_rwlock_key key_rwlock_LOCK_grant, key_rwlock_LOCK_logger,
  key_rwlock_LOCK_sys_init_connect, key_rwlock_LOCK_sys_init_slave,
  key_rwlock_LOCK_system_variables_hash, key_rwlock_query_cache_query_lock,
  key_rwlock_global_sid_lock, key_rwlock_gtid_mode_lock,
  key_rwlock_channel_map_lock, key_rwlock_channel_lock;

extern PSI_cond_key key_PAGE_cond, key_COND_active, key_COND_pool;
extern PSI_cond_key key_BINLOG_update_cond,
  key_COND_cache_status_changed, key_COND_manager,
  key_COND_server_started,
  key_item_func_sleep_cond, key_master_info_data_cond,
  key_master_info_start_cond, key_master_info_stop_cond,
  key_master_info_sleep_cond,
  key_relay_log_info_data_cond, key_relay_log_info_log_space_cond,
  key_relay_log_info_start_cond, key_relay_log_info_stop_cond,
  key_relay_log_info_sleep_cond, key_cond_slave_parallel_pend_jobs,
  key_cond_slave_parallel_worker, key_cond_mts_gaq,
  key_TABLE_SHARE_cond, key_user_level_lock_cond;
extern PSI_cond_key key_BINLOG_COND_done;
extern PSI_cond_key key_RELAYLOG_COND_done;
extern PSI_cond_key key_RELAYLOG_update_cond;
extern PSI_cond_key key_BINLOG_prep_xids_cond;
extern PSI_cond_key key_RELAYLOG_prep_xids_cond;
extern PSI_cond_key key_gtid_ensure_index_cond;
extern PSI_cond_key key_COND_compress_gtid_table;
extern PSI_cond_key key_COND_thr_lock;

#ifdef HAVE_REPLICATION
extern PSI_cond_key key_cond_slave_worker_hash;
extern PSI_cond_key key_commit_order_manager_cond;
#endif
extern PSI_thread_key key_thread_bootstrap,
  key_thread_handle_manager, key_thread_main,
  key_thread_one_connection, key_thread_signal_hand,
  key_thread_compress_gtid_table, key_thread_parser_service;
extern PSI_thread_key key_thread_timer_notifier;

extern PSI_file_key key_file_map;
extern PSI_file_key key_file_binlog, key_file_binlog_cache,
  key_file_binlog_index, key_file_binlog_index_cache, key_file_casetest,
  key_file_dbopt, key_file_des_key_file, key_file_ERRMSG, key_select_to_file,
  key_file_fileparser, key_file_frm, key_file_global_ddl_log, key_file_load,
  key_file_loadfile, key_file_log_event_data, key_file_log_event_info,
  key_file_master_info, key_file_misc, key_file_partition_ddl_log,
  key_file_pid, key_file_relay_log_info, key_file_send_file, key_file_tclog,
  key_file_trg, key_file_trn, key_file_init;
extern PSI_file_key key_file_general_log, key_file_slow_log;
extern PSI_file_key key_file_relaylog, key_file_relaylog_cache, key_file_relaylog_index, key_file_relaylog_index_cache;
extern PSI_socket_key key_socket_tcpip, key_socket_unix, key_socket_client_connection;

void init_server_psi_keys();

C_MODE_END

#endif /* HAVE_PSI_INTERFACE */

C_MODE_START

extern PSI_memory_key key_memory_locked_table_list;
extern PSI_memory_key key_memory_locked_thread_list;
extern PSI_memory_key key_memory_thd_transactions;
extern PSI_memory_key key_memory_delegate;
extern PSI_memory_key key_memory_acl_mem;
extern PSI_memory_key key_memory_acl_memex;
extern PSI_memory_key key_memory_acl_cache;
extern PSI_memory_key key_memory_thd_main_mem_root;
extern PSI_memory_key key_memory_help;
extern PSI_memory_key key_memory_frm;
extern PSI_memory_key key_memory_table_share;
extern PSI_memory_key key_memory_gdl;
extern PSI_memory_key key_memory_table_triggers_list;
extern PSI_memory_key key_memory_prepared_statement_map;
extern PSI_memory_key key_memory_prepared_statement_main_mem_root;
extern PSI_memory_key key_memory_protocol_rset_root;
extern PSI_memory_key key_memory_warning_info_warn_root;
extern PSI_memory_key key_memory_sp_cache;
extern PSI_memory_key key_memory_sp_head_main_root;
extern PSI_memory_key key_memory_sp_head_execute_root;
extern PSI_memory_key key_memory_sp_head_call_root;
extern PSI_memory_key key_memory_table_mapping_root;
extern PSI_memory_key key_memory_quick_range_select_root;
extern PSI_memory_key key_memory_quick_index_merge_root;
extern PSI_memory_key key_memory_quick_ror_intersect_select_root;
extern PSI_memory_key key_memory_quick_ror_union_select_root;
extern PSI_memory_key key_memory_quick_group_min_max_select_root;
extern PSI_memory_key key_memory_test_quick_select_exec;
extern PSI_memory_key key_memory_prune_partitions_exec;
extern PSI_memory_key key_memory_binlog_recover_exec;
extern PSI_memory_key key_memory_blob_mem_storage;

extern PSI_memory_key key_memory_Sys_var_charptr_value;
extern PSI_memory_key key_memory_THD_db;
extern PSI_memory_key key_memory_user_var_entry;
extern PSI_memory_key key_memory_user_var_entry_value;
extern PSI_memory_key key_memory_Slave_job_group_group_relay_log_name;
extern PSI_memory_key key_memory_Relay_log_info_group_relay_log_name;
extern PSI_memory_key key_memory_binlog_cache_mngr;
extern PSI_memory_key key_memory_Row_data_memory_memory;
extern PSI_memory_key key_memory_errmsgs;
extern PSI_memory_key key_memory_Event_queue_element_for_exec_names;
extern PSI_memory_key key_memory_Event_scheduler_scheduler_param;
extern PSI_memory_key key_memory_Gis_read_stream_err_msg;
extern PSI_memory_key key_memory_Geometry_objects_data;
extern PSI_memory_key key_memory_host_cache_hostname;
extern PSI_memory_key key_memory_User_level_lock;
extern PSI_memory_key key_memory_Filesort_info_record_pointers;
extern PSI_memory_key key_memory_Sort_param_tmp_buffer;
extern PSI_memory_key key_memory_Filesort_info_merge;
extern PSI_memory_key key_memory_Filesort_buffer_sort_keys;
extern PSI_memory_key key_memory_handler_errmsgs;
extern PSI_memory_key key_memory_handlerton;
extern PSI_memory_key key_memory_XID;
extern PSI_memory_key key_memory_MYSQL_LOCK;
extern PSI_memory_key key_memory_MYSQL_LOG_name;
extern PSI_memory_key key_memory_TC_LOG_MMAP_pages;
extern PSI_memory_key key_memory_my_str_malloc;
extern PSI_memory_key key_memory_MYSQL_BIN_LOG_basename;
extern PSI_memory_key key_memory_MYSQL_BIN_LOG_index;
extern PSI_memory_key key_memory_MYSQL_RELAY_LOG_basename;
extern PSI_memory_key key_memory_MYSQL_RELAY_LOG_index;
extern PSI_memory_key key_memory_rpl_filter;
extern PSI_memory_key key_memory_Security_context;
extern PSI_memory_key key_memory_NET_buff;
extern PSI_memory_key key_memory_NET_compress_packet;
extern PSI_memory_key key_memory_my_bitmap_map;
extern PSI_memory_key key_memory_QUICK_RANGE_SELECT_mrr_buf_desc;
extern PSI_memory_key key_memory_TABLE_RULE_ENT;
extern PSI_memory_key key_memory_Mutex_cond_array_Mutex_cond;
extern PSI_memory_key key_memory_Owned_gtids_sidno_to_hash;
extern PSI_memory_key key_memory_Sid_map_Node;
extern PSI_memory_key key_memory_bison_stack;
extern PSI_memory_key key_memory_TABLE_sort_io_cache;
extern PSI_memory_key key_memory_DATE_TIME_FORMAT;
extern PSI_memory_key key_memory_DDL_LOG_MEMORY_ENTRY;
extern PSI_memory_key key_memory_ST_SCHEMA_TABLE;
extern PSI_memory_key key_memory_ignored_db;
extern PSI_memory_key key_memory_SLAVE_INFO;
extern PSI_memory_key key_memory_log_event_old;
extern PSI_memory_key key_memory_HASH_ROW_ENTRY;
extern PSI_memory_key key_memory_table_def_memory;
extern PSI_memory_key key_memory_MPVIO_EXT_auth_info;
extern PSI_memory_key key_memory_LOG_POS_COORD;
extern PSI_memory_key key_memory_XID_STATE;
extern PSI_memory_key key_memory_Rpl_info_file_buffer;
extern PSI_memory_key key_memory_Rpl_info_table;
extern PSI_memory_key key_memory_binlog_pos;
extern PSI_memory_key key_memory_db_worker_hash_entry;
extern PSI_memory_key key_memory_rpl_slave_command_buffer;
extern PSI_memory_key key_memory_binlog_ver_1_event;
extern PSI_memory_key key_memory_rpl_slave_check_temp_dir;
extern PSI_memory_key key_memory_TABLE;
extern PSI_memory_key key_memory_binlog_statement_buffer;
extern PSI_memory_key key_memory_user_conn;
extern PSI_memory_key key_memory_dboptions_hash;
extern PSI_memory_key key_memory_hash_index_key_buffer;
extern PSI_memory_key key_memory_THD_handler_tables_hash;
extern PSI_memory_key key_memory_JOIN_CACHE;
extern PSI_memory_key key_memory_READ_INFO;
extern PSI_memory_key key_memory_partition_syntax_buffer;
extern PSI_memory_key key_memory_global_system_variables;
extern PSI_memory_key key_memory_THD_variables;
extern PSI_memory_key key_memory_PROFILE;
extern PSI_memory_key key_memory_LOG_name;
extern PSI_memory_key key_memory_string_iterator;
extern PSI_memory_key key_memory_frm_extra_segment_buff;
extern PSI_memory_key key_memory_frm_form_pos;
extern PSI_memory_key key_memory_frm_string;
extern PSI_memory_key key_memory_Unique_sort_buffer;
extern PSI_memory_key key_memory_Unique_merge_buffer;
extern PSI_memory_key key_memory_shared_memory_name;
extern PSI_memory_key key_memory_opt_bin_logname;
extern PSI_memory_key key_memory_Query_cache;
extern PSI_memory_key key_memory_READ_RECORD_cache;
extern PSI_memory_key key_memory_Quick_ranges;
extern PSI_memory_key key_memory_File_query_log_name;
extern PSI_memory_key key_memory_Table_trigger_dispatcher;
extern PSI_memory_key key_memory_show_slave_status_io_gtid_set;
extern PSI_memory_key key_memory_write_set_extraction;
extern PSI_memory_key key_memory_thd_timer;
extern PSI_memory_key key_memory_THD_Session_tracker;
extern PSI_memory_key key_memory_THD_Session_sysvar_resource_manager;
extern PSI_memory_key key_memory_get_all_tables;
extern PSI_memory_key key_memory_fill_schema_schemata;
extern PSI_memory_key key_memory_native_functions;
extern PSI_memory_key key_memory_JSON;

C_MODE_END

/*
  MAINTAINER: Please keep this list in order, to limit merge collisions.
  Hint: grep PSI_stage_info | sort -u
*/
extern PSI_stage_info stage_after_create;
extern PSI_stage_info stage_allocating_local_table;
extern PSI_stage_info stage_alter_inplace_prepare;
extern PSI_stage_info stage_alter_inplace;
extern PSI_stage_info stage_alter_inplace_commit;
extern PSI_stage_info stage_changing_master;
extern PSI_stage_info stage_checking_master_version;
extern PSI_stage_info stage_checking_permissions;
extern PSI_stage_info stage_checking_privileges_on_cached_query;
extern PSI_stage_info stage_checking_query_cache_for_query;
extern PSI_stage_info stage_cleaning_up;
extern PSI_stage_info stage_closing_tables;
extern PSI_stage_info stage_compressing_gtid_table;
extern PSI_stage_info stage_connecting_to_master;
extern PSI_stage_info stage_converting_heap_to_ondisk;
extern PSI_stage_info stage_copying_to_group_table;
extern PSI_stage_info stage_copying_to_tmp_table;
extern PSI_stage_info stage_copy_to_tmp_table;
extern PSI_stage_info stage_creating_sort_index;
extern PSI_stage_info stage_creating_table;
extern PSI_stage_info stage_creating_tmp_table;
extern PSI_stage_info stage_deleting_from_main_table;
extern PSI_stage_info stage_deleting_from_reference_tables;
extern PSI_stage_info stage_discard_or_import_tablespace;
extern PSI_stage_info stage_end;
extern PSI_stage_info stage_executing;
extern PSI_stage_info stage_execution_of_init_command;
extern PSI_stage_info stage_explaining;
extern PSI_stage_info stage_finished_reading_one_binlog_switching_to_next_binlog;
extern PSI_stage_info stage_flushing_relay_log_and_master_info_repository;
extern PSI_stage_info stage_flushing_relay_log_info_file;
extern PSI_stage_info stage_freeing_items;
extern PSI_stage_info stage_fulltext_initialization;
extern PSI_stage_info stage_got_handler_lock;
extern PSI_stage_info stage_got_old_table;
extern PSI_stage_info stage_init;
extern PSI_stage_info stage_insert;
extern PSI_stage_info stage_invalidating_query_cache_entries_table;
extern PSI_stage_info stage_invalidating_query_cache_entries_table_list;
extern PSI_stage_info stage_killing_slave;
extern PSI_stage_info stage_logging_slow_query;
extern PSI_stage_info stage_making_temp_file_append_before_load_data;
extern PSI_stage_info stage_making_temp_file_create_before_load_data;
extern PSI_stage_info stage_manage_keys;
extern PSI_stage_info stage_master_has_sent_all_binlog_to_slave;
extern PSI_stage_info stage_opening_tables;
extern PSI_stage_info stage_optimizing;
extern PSI_stage_info stage_preparing;
extern PSI_stage_info stage_purging_old_relay_logs;
extern PSI_stage_info stage_query_end;
extern PSI_stage_info stage_queueing_master_event_to_the_relay_log;
extern PSI_stage_info stage_reading_event_from_the_relay_log;
extern PSI_stage_info stage_registering_slave_on_master;
extern PSI_stage_info stage_removing_duplicates;
extern PSI_stage_info stage_removing_tmp_table;
extern PSI_stage_info stage_rename;
extern PSI_stage_info stage_rename_result_table;
extern PSI_stage_info stage_requesting_binlog_dump;
extern PSI_stage_info stage_reschedule;
extern PSI_stage_info stage_searching_rows_for_update;
extern PSI_stage_info stage_sending_binlog_event_to_slave;
extern PSI_stage_info stage_sending_cached_result_to_client;
extern PSI_stage_info stage_sending_data;
extern PSI_stage_info stage_setup;
extern PSI_stage_info stage_slave_has_read_all_relay_log;
extern PSI_stage_info stage_slave_waiting_event_from_coordinator;
extern PSI_stage_info stage_slave_waiting_for_workers_to_process_queue;
extern PSI_stage_info stage_slave_waiting_worker_queue;
extern PSI_stage_info stage_slave_waiting_worker_to_free_events;
extern PSI_stage_info stage_slave_waiting_worker_to_release_partition;
extern PSI_stage_info stage_slave_waiting_workers_to_exit;
extern PSI_stage_info stage_sorting_for_group;
extern PSI_stage_info stage_sorting_for_order;
extern PSI_stage_info stage_sorting_result;
extern PSI_stage_info stage_sql_thd_waiting_until_delay;
extern PSI_stage_info stage_statistics;
extern PSI_stage_info stage_storing_result_in_query_cache;
extern PSI_stage_info stage_storing_row_into_queue;
extern PSI_stage_info stage_system_lock;
extern PSI_stage_info stage_update;
extern PSI_stage_info stage_updating;
extern PSI_stage_info stage_updating_main_table;
extern PSI_stage_info stage_updating_reference_tables;
extern PSI_stage_info stage_upgrading_lock;
extern PSI_stage_info stage_user_sleep;
extern PSI_stage_info stage_verifying_table;
extern PSI_stage_info stage_waiting_for_gtid_to_be_committed;
extern PSI_stage_info stage_waiting_for_handler_insert;
extern PSI_stage_info stage_waiting_for_handler_lock;
extern PSI_stage_info stage_waiting_for_handler_open;
extern PSI_stage_info stage_waiting_for_insert;
extern PSI_stage_info stage_waiting_for_master_to_send_event;
extern PSI_stage_info stage_waiting_for_master_update;
extern PSI_stage_info stage_waiting_for_relay_log_space;
extern PSI_stage_info stage_waiting_for_slave_mutex_on_exit;
extern PSI_stage_info stage_waiting_for_slave_thread_to_start;
extern PSI_stage_info stage_waiting_for_query_cache_lock;
extern PSI_stage_info stage_waiting_for_table_flush;
extern PSI_stage_info stage_waiting_for_the_next_event_in_relay_log;
extern PSI_stage_info stage_waiting_for_the_slave_thread_to_advance_position;
extern PSI_stage_info stage_waiting_to_finalize_termination;
extern PSI_stage_info stage_worker_waiting_for_its_turn_to_commit;
extern PSI_stage_info stage_worker_waiting_for_commit_parent;
extern PSI_stage_info stage_suspending;
extern PSI_stage_info stage_starting;
extern PSI_stage_info stage_waiting_for_no_channel_reference;
#ifdef HAVE_PSI_STATEMENT_INTERFACE
/**
  Statement instrumentation keys (sql).
  The last entry, at [SQLCOM_END], is for parsing errors.
*/
extern PSI_statement_info sql_statement_info[(uint) SQLCOM_END + 1];

/**
  Statement instrumentation keys (com).
  The last entry, at [COM_END], is for packet errors.
*/
extern PSI_statement_info com_statement_info[(uint) COM_END + 1];

/**
  Statement instrumentation key for replication.
*/
extern PSI_statement_info stmt_info_rpl;

void init_sql_statement_info();
void init_com_statement_info();
#endif /* HAVE_PSI_STATEMENT_INTERFACE */

#ifndef _WIN32
extern my_thread_t signal_thread;
#endif

#ifdef HAVE_OPENSSL
extern struct st_VioSSLFd * ssl_acceptor_fd;
#endif /* HAVE_OPENSSL */

/*
  The following variables were under INNODB_COMPABILITY_HOOKS
 */
extern my_bool opt_large_pages;
extern uint opt_large_page_size;
extern char lc_messages_dir[FN_REFLEN];
extern char *lc_messages_dir_ptr;
extern const char *log_error_dest;
extern MYSQL_PLUGIN_IMPORT char reg_ext[FN_EXTLEN];
extern MYSQL_PLUGIN_IMPORT uint reg_ext_length;
extern MYSQL_PLUGIN_IMPORT uint lower_case_table_names;
extern MYSQL_PLUGIN_IMPORT bool mysqld_embedded;

extern long tc_heuristic_recover;

extern ulong specialflag;
extern size_t mysql_data_home_len;
extern size_t mysql_real_data_home_len;
extern const char *mysql_real_data_home_ptr;
extern MYSQL_PLUGIN_IMPORT char  *mysql_data_home;
extern "C" MYSQL_PLUGIN_IMPORT char server_version[SERVER_VERSION_LENGTH];
extern MYSQL_PLUGIN_IMPORT char mysql_real_data_home[];
extern char mysql_unpacked_real_data_home[];
extern MYSQL_PLUGIN_IMPORT struct system_variables global_system_variables;
extern char default_logfile_name[FN_REFLEN];

#define mysql_tmpdir (my_tmpdir(&mysql_tmpdir_list))

extern MYSQL_PLUGIN_IMPORT const key_map key_map_empty;
extern MYSQL_PLUGIN_IMPORT key_map key_map_full;          /* Should be threaded as const */

/*
  Server mutex locks and condition variables.
 */
extern mysql_mutex_t
       LOCK_item_func_sleep, LOCK_status,
       LOCK_uuid_generator,
       LOCK_crypt, LOCK_timezone,
       LOCK_slave_list, LOCK_manager,
       LOCK_global_system_variables, LOCK_user_conn, LOCK_log_throttle_qni,
       LOCK_prepared_stmt_count, LOCK_error_messages,
       LOCK_sql_slave_skip_counter, LOCK_slave_net_timeout,
       LOCK_slave_trans_dep_tracker,
       LOCK_offline_mode, LOCK_default_password_lifetime;
#ifdef HAVE_OPENSSL
extern char* des_key_file;
extern mysql_mutex_t LOCK_des_key_file;
#endif
extern mysql_mutex_t LOCK_server_started;
extern mysql_cond_t COND_server_started;
extern mysql_mutex_t LOCK_reset_gtid_table;
extern mysql_mutex_t LOCK_compress_gtid_table;
extern mysql_cond_t COND_compress_gtid_table;
extern mysql_rwlock_t LOCK_sys_init_connect, LOCK_sys_init_slave;
extern mysql_rwlock_t LOCK_system_variables_hash;
extern mysql_cond_t COND_manager;
extern int32 thread_running;
extern mysql_mutex_t LOCK_keyring_operations;

extern char *opt_ssl_ca, *opt_ssl_capath, *opt_ssl_cert, *opt_ssl_cipher,
            *opt_ssl_key, *opt_ssl_crl, *opt_ssl_crlpath, *opt_tls_version;


extern char *opt_disabled_storage_engines;
/**
  only options that need special treatment in get_one_option() deserve
  to be listed below
*/
enum options_mysqld
{
  OPT_to_set_the_start_number=256,
  OPT_BIND_ADDRESS,
  OPT_BINLOG_CHECKSUM,
  OPT_BINLOG_DO_DB,
  OPT_BINLOG_FORMAT,
  OPT_BINLOG_MAX_FLUSH_QUEUE_TIME,
  OPT_BINLOG_IGNORE_DB,
  OPT_BIN_LOG,
  OPT_BOOTSTRAP,
  OPT_CONSOLE,
  OPT_DEBUG_SYNC_TIMEOUT,
  OPT_DELAY_KEY_WRITE_ALL,
  OPT_ISAM_LOG,
  OPT_IGNORE_DB_DIRECTORY,
  OPT_KEY_BUFFER_SIZE,
  OPT_KEY_CACHE_AGE_THRESHOLD,
  OPT_KEY_CACHE_BLOCK_SIZE,
  OPT_KEY_CACHE_DIVISION_LIMIT,
  OPT_LC_MESSAGES_DIRECTORY,
  OPT_LOWER_CASE_TABLE_NAMES,
  OPT_MASTER_RETRY_COUNT,
  OPT_MASTER_VERIFY_CHECKSUM,
  OPT_POOL_OF_THREADS,
  OPT_REPLICATE_DO_DB,
  OPT_REPLICATE_DO_TABLE,
  OPT_REPLICATE_IGNORE_DB,
  OPT_REPLICATE_IGNORE_TABLE,
  OPT_REPLICATE_REWRITE_DB,
  OPT_REPLICATE_WILD_DO_TABLE,
  OPT_REPLICATE_WILD_IGNORE_TABLE,
  OPT_SERVER_ID,
  OPT_SKIP_HOST_CACHE,
  OPT_SKIP_LOCK,
  OPT_SKIP_NEW,
  OPT_SKIP_RESOLVE,
  OPT_SKIP_STACK_TRACE,
  OPT_SKIP_SYMLINKS,
  OPT_SLAVE_SQL_VERIFY_CHECKSUM,
  OPT_SSL_CA,
  OPT_SSL_CAPATH,
  OPT_SSL_CERT,
  OPT_SSL_CIPHER,
  OPT_TLS_VERSION,
  OPT_SSL_KEY,
  OPT_UPDATE_LOG,
  OPT_WANT_CORE,
  OPT_LOG_ERROR,
  OPT_MAX_LONG_DATA_SIZE,
  OPT_EARLY_PLUGIN_LOAD,
  OPT_PLUGIN_LOAD,
  OPT_PLUGIN_LOAD_ADD,
  OPT_SSL_CRL,
  OPT_SSL_CRLPATH,
  OPT_PFS_INSTRUMENT,
  OPT_DEFAULT_AUTH,
  OPT_SECURE_AUTH,
  OPT_THREAD_CACHE_SIZE,
  OPT_HOST_CACHE_SIZE,
  OPT_TABLE_DEFINITION_CACHE,
  OPT_MDL_CACHE_SIZE,
  OPT_MDL_HASH_INSTANCES,
  OPT_SKIP_INNODB,
  OPT_AVOID_TEMPORAL_UPGRADE,
  OPT_SHOW_OLD_TEMPORALS,
  OPT_ENFORCE_GTID_CONSISTENCY,
  OPT_TRANSACTION_READ_ONLY,
  OPT_TRANSACTION_ISOLATION,
  OPT_KEYRING_MIGRATION_SOURCE,
  OPT_KEYRING_MIGRATION_DESTINATION,
  OPT_KEYRING_MIGRATION_USER,
  OPT_KEYRING_MIGRATION_HOST,
  OPT_KEYRING_MIGRATION_PASSWORD,
  OPT_KEYRING_MIGRATION_SOCKET,
  OPT_KEYRING_MIGRATION_PORT,
  OPT_NAMED_PIPE_FULL_ACCESS_GROUP
};


/**
   Query type constants (usable as bitmap flags).
*/
enum enum_query_type
{
  /// Nothing specific, ordinary SQL query.
  QT_ORDINARY= 0,
  /// In utf8.
  QT_TO_SYSTEM_CHARSET= (1 << 0),
  /// Without character set introducers.
  QT_WITHOUT_INTRODUCERS= (1 << 1),
  /// When printing a SELECT, add its number (select_lex->number)
  QT_SHOW_SELECT_NUMBER= (1 << 2),
  /// Don't print a database if it's equal to the connection's database
  QT_NO_DEFAULT_DB= (1 << 3),
  /// When printing a derived table, don't print its expression, only alias
  QT_DERIVED_TABLE_ONLY_ALIAS= (1 << 4),
  /// Print in charset of Item::print() argument (typically thd->charset()).
  QT_TO_ARGUMENT_CHARSET= (1 << 5),
  /// Print identifiers without database's name
  QT_NO_DB= (1 << 6),
  /// Print identifiers without table's name
  QT_NO_TABLE= (1 << 7),
  /**
    Change all Item_basic_constant to ? (used by query rewrite to compute
    digest.)  Un-resolved hints will also be printed in this format.
  */
  QT_NORMALIZED_FORMAT= (1 << 8),
  /**
    If an expression is constant, print the expression, not the value
    it evaluates to. Should be used for error messages, so that they
    don't reveal values.
  */
  QT_NO_DATA_EXPANSION= (1 << 9),
};

/* query_id */
typedef int64 query_id_t;
extern query_id_t global_query_id;

/* increment query_id and return it.  */
inline MY_ATTRIBUTE((warn_unused_result)) query_id_t next_query_id()
{
  query_id_t id= my_atomic_add64(&global_query_id, 1);
  return (id+1);
}

/*
  TODO: Replace this with an inline function.
 */
#ifndef EMBEDDED_LIBRARY
extern "C" void unireg_abort(int exit_code) MY_ATTRIBUTE((noreturn));
#else
extern "C" void unireg_clear(int exit_code);
#define unireg_abort(exit_code) do { unireg_clear(exit_code); DBUG_RETURN(exit_code); } while(0)
#endif

#if defined(MYSQL_DYNAMIC_PLUGIN) && defined(_WIN32)
extern "C" THD *_current_thd_noinline();
#define _current_thd() _current_thd_noinline()
#else
static inline THD *_current_thd(void)
{
  return my_thread_get_THR_THD();
}
#endif
#define current_thd _current_thd()

#define ER(X)         ER_THD(current_thd,X)

#ifdef _WIN32
bool update_named_pipe_full_access_group(const char *new_group_name);
#endif

#endif /* MYSQLD_INCLUDED */
