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mysqld.cc
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/* Copyright (c) 2000, 2015, Oracle and/or its affiliates.
Copyright (c) 2008, 2023, MariaDB
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 */
#include "sql_plugin.h" // Includes mariadb.h
#include "sql_priv.h"
#include "unireg.h"
#include <signal.h>
#ifndef _WIN32
#include <netdb.h> // getservbyname, servent
#endif
#include "sql_parse.h" // path_starts_from_data_home_dir
#include "sql_cache.h" // query_cache, query_cache_*
#include "sql_locale.h" // MY_LOCALES, my_locales, my_locale_by_name
#include "sql_show.h" // free_status_vars, add_status_vars,
// reset_status_vars
#include "strfunc.h" // find_set_from_flags
#include "parse_file.h" // File_parser_dummy_hook
#include "sql_db.h" // my_dboptions_cache_free
// my_dboptions_cache_init
#include "sql_table.h" // ddl_log_release, ddl_log_execute_recovery
#include "sql_connect.h" // free_max_user_conn, init_max_user_conn,
// handle_one_connection
#include "thread_cache.h"
#include "sql_time.h" // known_date_time_formats,
// get_date_time_format_str,
// date_time_format_make
#include "tztime.h" // my_tz_free, my_tz_init, my_tz_SYSTEM
#include "hostname.h" // hostname_cache_free, hostname_cache_init
#include "sql_acl.h" // acl_free, grant_free, acl_init,
// grant_init
#include "sql_base.h"
#include "sql_test.h" // mysql_print_status
#include "item_create.h" // item_create_cleanup, item_create_init
#include "json_schema.h"
#include "sql_servers.h" // servers_free, servers_init
#include "init.h" // unireg_init
#include "derror.h" // init_errmessage
#include "des_key_file.h" // load_des_key_file
#include "sql_manager.h" // stop_handle_manager, start_handle_manager
#include "sql_expression_cache.h" // subquery_cache_miss, subquery_cache_hit
#include "sys_vars_shared.h"
#include "ddl_log.h"
#include "optimizer_defaults.h"
#include <m_ctype.h>
#include <my_dir.h>
#include <my_bit.h>
#include "my_cpu.h"
#include "slave.h"
#include "rpl_mi.h"
#include "sql_repl.h"
#include "rpl_filter.h"
#include "client_settings.h"
#include "repl_failsafe.h"
#include <sql_common.h>
#include <my_stacktrace.h>
#include "mysqld_suffix.h"
#include "mysys_err.h"
#include "events.h"
#include "sql_audit.h"
#include "probes_mysql.h"
#include "scheduler.h"
#include <waiting_threads.h>
#include "debug_sync.h"
#include "wsrep_mysqld.h"
#include "wsrep_var.h"
#ifdef WITH_WSREP
#include "wsrep_thd.h"
#include "wsrep_sst.h"
#include "wsrep_server_state.h"
#endif /* WITH_WSREP */
#include "proxy_protocol.h"
#include "sql_callback.h"
#include "threadpool.h"
#ifdef HAVE_OPENSSL
#include <ssl_compat.h>
#endif
#ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
#include "../storage/perfschema/pfs_server.h"
#endif /* WITH_PERFSCHEMA_STORAGE_ENGINE */
#include <mysql/psi/mysql_idle.h>
#include <mysql/psi/mysql_socket.h>
#include <mysql/psi/mysql_statement.h>
#include "mysql_com_server.h"
#include "keycaches.h"
#include "../storage/myisam/ha_myisam.h"
#include "set_var.h"
#include "rpl_injector.h"
#include "semisync_master.h"
#include "semisync_slave.h"
#include "transaction.h"
#ifdef HAVE_SYS_PRCTL_H
#include <sys/prctl.h>
#endif
#include <thr_alarm.h>
#include <ft_global.h>
#include <errmsg.h>
#include "sp_rcontext.h"
#include "sp_cache.h"
#include "sql_reload.h" // reload_acl_and_cache
#include "sp_head.h" // init_sp_psi_keys
#include <mysqld_default_groups.h>
#ifdef HAVE_POLL_H
#include <poll.h>
#endif
#ifdef _WIN32
#include <handle_connections_win.h>
#include <sddl.h>
#include <winservice.h> /* SERVICE_STOPPED, SERVICE_RUNNING etc */
#endif
#include <my_service_manager.h>
#include <source_revision.h>
#define mysqld_charset &my_charset_latin1
extern "C" { // Because of SCO 3.2V4.2
#include <sys/stat.h>
#ifndef __GNU_LIBRARY__
#define __GNU_LIBRARY__ // Skip warnings in getopt.h
#endif
#include <my_getopt.h>
#ifdef HAVE_SYSENT_H
#include <sysent.h>
#endif
#ifdef HAVE_PWD_H
#include <pwd.h> // For struct passwd
#endif
#include <my_net.h>
#if !defined(_WIN32)
#include <sys/resource.h>
#ifdef HAVE_SYS_UN_H
#include <sys/un.h>
#endif
#ifdef HAVE_SELECT_H
#include <select.h>
#endif
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#include <sys/utsname.h>
#endif /* _WIN32 */
#include <my_libwrap.h>
#ifdef _WIN32
#include <crtdbg.h>
#endif
#ifdef _AIX41
int initgroups(const char *,unsigned int);
#endif
#if defined(__FreeBSD__) && defined(HAVE_IEEEFP_H) && !defined(HAVE_FEDISABLEEXCEPT)
#include <ieeefp.h>
#ifdef HAVE_FP_EXCEPT // Fix type conflict
typedef fp_except fp_except_t;
#endif
#endif /* __FreeBSD__ && HAVE_IEEEFP_H && !HAVE_FEDISABLEEXCEPT */
#ifdef HAVE_SYS_FPU_H
/* for IRIX to use set_fpc_csr() */
#include <sys/fpu.h>
#endif
#ifdef HAVE_FPU_CONTROL_H
#include <fpu_control.h>
#endif
#if defined(__i386__) && !defined(HAVE_FPU_CONTROL_H)
# define fpu_control_t unsigned int
# define _FPU_EXTENDED 0x300
# define _FPU_DOUBLE 0x200
# if defined(__GNUC__) || (defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x590)
# define _FPU_GETCW(cw) asm volatile ("fnstcw %0" : "=m" (*&cw))
# define _FPU_SETCW(cw) asm volatile ("fldcw %0" : : "m" (*&cw))
# else
# define _FPU_GETCW(cw) (cw= 0)
# define _FPU_SETCW(cw)
# endif
#endif
#ifndef HAVE_FCNTL
#define fcntl(X,Y,Z) 0
#endif
inline void setup_fpu()
{
#if defined(__FreeBSD__) && defined(HAVE_IEEEFP_H) && !defined(HAVE_FEDISABLEEXCEPT)
/* We can't handle floating point exceptions with threads, so disable
this on freebsd
Don't fall for overflow, underflow,divide-by-zero or loss of precision.
fpsetmask() is deprecated in favor of fedisableexcept() in C99.
*/
#if defined(FP_X_DNML)
fpsetmask(~(FP_X_INV | FP_X_DNML | FP_X_OFL | FP_X_UFL | FP_X_DZ |
FP_X_IMP));
#else
fpsetmask(~(FP_X_INV | FP_X_OFL | FP_X_UFL | FP_X_DZ |
FP_X_IMP));
#endif /* FP_X_DNML */
#endif /* __FreeBSD__ && HAVE_IEEEFP_H && !HAVE_FEDISABLEEXCEPT */
#ifdef HAVE_FEDISABLEEXCEPT
fedisableexcept(FE_ALL_EXCEPT);
#endif
#ifdef HAVE_FESETROUND
/* Set FPU rounding mode to "round-to-nearest" */
fesetround(FE_TONEAREST);
#endif /* HAVE_FESETROUND */
/*
x86 (32-bit) requires FPU precision to be explicitly set to 64 bit
(double precision) for portable results of floating point operations.
However, there is no need to do so if compiler is using SSE2 for floating
point, double values will be stored and processed in 64 bits anyway.
*/
#if defined(__i386__) && !defined(__SSE2_MATH__)
#if defined(_WIN32)
#if !defined(_WIN64)
_control87(_PC_53, MCW_PC);
#endif /* !_WIN64 */
#else /* !_WIN32 */
fpu_control_t cw;
_FPU_GETCW(cw);
cw= (cw & ~_FPU_EXTENDED) | _FPU_DOUBLE;
_FPU_SETCW(cw);
#endif /* _WIN32 && */
#endif /* __i386__ */
#if defined(__sgi) && defined(HAVE_SYS_FPU_H)
/* Enable denormalized DOUBLE values support for IRIX */
union fpc_csr n;
n.fc_word = get_fpc_csr();
n.fc_struct.flush = 0;
set_fpc_csr(n.fc_word);
#endif
}
} /* cplusplus */
#define MYSQL_KILL_SIGNAL SIGTERM
#include <my_pthread.h> // For thr_setconcurency()
#ifdef SOLARIS
extern "C" int gethostname(char *name, int namelen);
#endif
extern "C" sig_handler handle_fatal_signal(int sig);
#if defined(__linux__)
#define ENABLE_TEMP_POOL 1
#else
#define ENABLE_TEMP_POOL 0
#endif
int init_io_cache_encryption();
extern "C"
{
static void my_malloc_size_cb_func(long long size,
my_bool is_thread_specific);
}
/* Constants */
#include <welcome_copyright_notice.h> // ORACLE_WELCOME_COPYRIGHT_NOTICE
const char *show_comp_option_name[]= {"YES", "NO", "DISABLED"};
static const char *tc_heuristic_recover_names[]=
{
"OFF", "COMMIT", "ROLLBACK", NullS
};
static TYPELIB tc_heuristic_recover_typelib=
{
array_elements(tc_heuristic_recover_names)-1,"",
tc_heuristic_recover_names, NULL
};
const char *first_keyword= "first";
const char *my_localhost= "localhost", *delayed_user= "DELAYED";
bool opt_large_files= sizeof(my_off_t) > 4;
static my_bool opt_autocommit; ///< for --autocommit command-line option
/*
Used with --help for detailed option
*/
static my_bool opt_verbose= 0;
/* Timer info to be used by the SQL layer */
MY_TIMER_INFO sys_timer_info;
/* static variables */
#ifdef HAVE_PSI_INTERFACE
#ifdef HAVE_OPENSSL10
static PSI_rwlock_key key_rwlock_openssl;
#endif
#endif /* HAVE_PSI_INTERFACE */
/**
Statement instrumentation key for replication.
*/
#ifdef HAVE_PSI_STATEMENT_INTERFACE
PSI_statement_info stmt_info_rpl;
#endif
/* the default log output is log tables */
static bool lower_case_table_names_used= 0;
static bool volatile select_thread_in_use, signal_thread_in_use;
static my_bool opt_debugging= 0, opt_external_locking= 0, opt_console= 0;
static my_bool opt_short_log_format= 0, opt_silent_startup= 0;
ulong max_used_connections;
time_t max_used_connections_time;
static const char *mysqld_user, *mysqld_chroot;
static char *default_character_set_name;
static char *character_set_filesystem_name;
static char *lc_messages;
static char *lc_time_names_name;
char *my_bind_addr_str;
static char *default_collation_name;
char *default_storage_engine, *default_tmp_storage_engine;
char *enforced_storage_engine=NULL;
char *gtid_pos_auto_engines;
plugin_ref *opt_gtid_pos_auto_plugins;
static char compiled_default_collation_name[]= MYSQL_DEFAULT_COLLATION_NAME;
static const char *character_set_collations_str= "";
Thread_cache thread_cache;
static bool binlog_format_used= false;
LEX_STRING opt_init_connect, opt_init_slave;
static DYNAMIC_ARRAY all_options;
static longlong start_memory_used;
/* Global variables */
bool opt_bin_log, opt_bin_log_used=0, opt_ignore_builtin_innodb= 0;
bool opt_bin_log_compress;
uint opt_bin_log_compress_min_len;
my_bool opt_log, debug_assert_if_crashed_table= 0, opt_help= 0;
my_bool debug_assert_on_not_freed_memory= 0;
my_bool disable_log_notes, opt_support_flashback= 0;
static my_bool opt_abort;
ulonglong log_output_options;
my_bool opt_userstat_running;
bool opt_error_log= IF_WIN(1,0);
bool opt_disable_networking=0, opt_skip_show_db=0;
bool opt_skip_name_resolve=0;
my_bool opt_character_set_client_handshake= 1;
bool opt_endinfo, using_udf_functions;
my_bool locked_in_memory;
bool opt_using_transactions;
bool volatile abort_loop;
uint volatile global_disable_checkpoint;
#if defined(_WIN32)
ulong slow_start_timeout;
#endif
static MEM_ROOT startup_root;
MEM_ROOT read_only_root;
/**
@brief 'grant_option' is used to indicate if privileges needs
to be checked, in which case the lock, LOCK_grant, is used
to protect access to the grant table.
@note This flag is dropped in 5.1
@see grant_init()
*/
bool volatile grant_option;
my_bool opt_skip_slave_start = 0; ///< If set, slave is not autostarted
my_bool opt_reckless_slave = 0;
my_bool opt_enable_named_pipe= 0;
my_bool opt_local_infile, opt_slave_compressed_protocol;
my_bool opt_safe_user_create = 0;
my_bool opt_show_slave_auth_info;
my_bool opt_log_slave_updates= 0;
my_bool opt_replicate_annotate_row_events= 0;
my_bool opt_mysql56_temporal_format=0, strict_password_validation= 1;
char *opt_slave_skip_errors;
char *opt_slave_transaction_retry_errors;
/*
Legacy global handlerton. These will be removed (please do not add more).
*/
handlerton *heap_hton;
handlerton *myisam_hton;
handlerton *partition_hton;
my_bool read_only= 0, opt_readonly= 0;
my_bool use_temp_pool, relay_log_purge;
my_bool relay_log_recovery;
my_bool opt_sync_frm, opt_allow_suspicious_udfs;
my_bool opt_secure_auth= 0;
my_bool opt_require_secure_transport= 0;
char* opt_secure_file_priv;
my_bool lower_case_file_system= 0;
my_bool opt_large_pages= 0;
my_bool opt_super_large_pages= 0;
my_bool opt_myisam_use_mmap= 0;
uint opt_large_page_size= 0;
#if defined(ENABLED_DEBUG_SYNC)
MYSQL_PLUGIN_IMPORT uint opt_debug_sync_timeout= 0;
#endif /* defined(ENABLED_DEBUG_SYNC) */
my_bool opt_old_style_user_limits= 0, trust_function_creators= 0;
ulong opt_replicate_events_marked_for_skip;
/*
True if there is at least one per-hour limit for some user, so we should
check them before each query (and possibly reset counters when hour is
changed). False otherwise.
*/
volatile bool mqh_used = 0;
my_bool opt_noacl;
my_bool sp_automatic_privileges= 1;
ulong opt_binlog_rows_event_max_size;
ulong binlog_row_metadata;
my_bool opt_master_verify_checksum= 0;
my_bool opt_slave_sql_verify_checksum= 1;
const char *binlog_format_names[]= {"MIXED", "STATEMENT", "ROW", NullS};
volatile sig_atomic_t calling_initgroups= 0; /**< Used in SIGSEGV handler. */
uint mysqld_port, select_errors, dropping_tables, ha_open_options;
uint mysqld_extra_port;
uint mysqld_port_timeout;
ulong delay_key_write_options;
uint protocol_version;
uint lower_case_table_names;
ulong tc_heuristic_recover= 0;
Atomic_counter<uint32_t> THD_count::count, CONNECT::count;
bool shutdown_wait_for_slaves;
Atomic_counter<uint32_t> slave_open_temp_tables;
ulong thread_created;
ulong back_log, connect_timeout, server_id;
ulong what_to_log;
ulong slow_launch_time;
ulong open_files_limit, max_binlog_size;
ulong slave_trans_retries;
ulong slave_trans_retry_interval;
uint slave_net_timeout;
ulong slave_exec_mode_options;
ulong slave_run_triggers_for_rbr= 0;
ulong slave_ddl_exec_mode_options= SLAVE_EXEC_MODE_IDEMPOTENT;
ulonglong slave_type_conversions_options;
ulong thread_cache_size=0;
ulonglong binlog_cache_size=0;
ulonglong binlog_file_cache_size=0;
ulonglong max_binlog_cache_size=0;
ulong slave_max_allowed_packet= 0;
double slave_max_statement_time_double;
ulonglong slave_max_statement_time;
ulonglong binlog_stmt_cache_size=0;
ulonglong max_binlog_stmt_cache_size=0;
ulonglong test_flags;
ulonglong query_cache_size=0;
ulong query_cache_limit=0;
ulong executed_events=0;
Atomic_counter<query_id_t> global_query_id;
ulong aborted_threads, aborted_connects, aborted_connects_preauth;
ulong delayed_insert_timeout, delayed_insert_limit, delayed_queue_size;
ulong delayed_insert_threads, delayed_insert_writes, delayed_rows_in_use;
ulong delayed_insert_errors,flush_time;
ulong malloc_calls;
ulong specialflag=0;
ulong binlog_cache_use= 0, binlog_cache_disk_use= 0;
ulong binlog_stmt_cache_use= 0, binlog_stmt_cache_disk_use= 0;
ulong max_connections, max_connect_errors;
uint max_password_errors;
ulong extra_max_connections;
uint max_digest_length= 0;
ulong slave_retried_transactions;
ulong transactions_multi_engine;
ulong rpl_transactions_multi_engine;
ulong transactions_gtid_foreign_engine;
ulonglong slave_skipped_errors;
ulong feature_files_opened_with_delayed_keys= 0, feature_check_constraint= 0;
ulonglong denied_connections;
my_decimal decimal_zero;
long opt_secure_timestamp;
uint default_password_lifetime;
my_bool disconnect_on_expired_password;
bool max_user_connections_checking=0;
/**
Limit of the total number of prepared statements in the server.
Is necessary to protect the server against out-of-memory attacks.
*/
uint max_prepared_stmt_count;
/**
Current total number of prepared statements in the server. This number
is exact, and therefore may not be equal to the difference between
`com_stmt_prepare' and `com_stmt_close' (global status variables), as
the latter ones account for all registered attempts to prepare
a statement (including unsuccessful ones). Prepared statements are
currently connection-local: if the same SQL query text is prepared in
two different connections, this counts as two distinct prepared
statements.
*/
uint prepared_stmt_count=0;
my_thread_id global_thread_id= 0;
ulong current_pid;
ulong slow_launch_threads = 0;
uint sync_binlog_period= 0, sync_relaylog_period= 0,
sync_relayloginfo_period= 0, sync_masterinfo_period= 0;
double expire_logs_days = 0;
ulong binlog_expire_logs_seconds = 0;
/**
Soft upper limit for number of sp_head objects that can be stored
in the sp_cache for one connection.
*/
ulong stored_program_cache_size= 0;
ulong opt_slave_parallel_threads= 0;
ulong opt_slave_domain_parallel_threads= 0;
ulong opt_slave_parallel_mode;
ulong opt_binlog_commit_wait_count= 0;
ulong opt_binlog_commit_wait_usec= 0;
ulong opt_slave_parallel_max_queued= 131072;
my_bool opt_gtid_ignore_duplicates= FALSE;
uint opt_gtid_cleanup_batch_size= 64;
const double log_10[] = {
1e000, 1e001, 1e002, 1e003, 1e004, 1e005, 1e006, 1e007, 1e008, 1e009,
1e010, 1e011, 1e012, 1e013, 1e014, 1e015, 1e016, 1e017, 1e018, 1e019,
1e020, 1e021, 1e022, 1e023, 1e024, 1e025, 1e026, 1e027, 1e028, 1e029,
1e030, 1e031, 1e032, 1e033, 1e034, 1e035, 1e036, 1e037, 1e038, 1e039,
1e040, 1e041, 1e042, 1e043, 1e044, 1e045, 1e046, 1e047, 1e048, 1e049,
1e050, 1e051, 1e052, 1e053, 1e054, 1e055, 1e056, 1e057, 1e058, 1e059,
1e060, 1e061, 1e062, 1e063, 1e064, 1e065, 1e066, 1e067, 1e068, 1e069,
1e070, 1e071, 1e072, 1e073, 1e074, 1e075, 1e076, 1e077, 1e078, 1e079,
1e080, 1e081, 1e082, 1e083, 1e084, 1e085, 1e086, 1e087, 1e088, 1e089,
1e090, 1e091, 1e092, 1e093, 1e094, 1e095, 1e096, 1e097, 1e098, 1e099,
1e100, 1e101, 1e102, 1e103, 1e104, 1e105, 1e106, 1e107, 1e108, 1e109,
1e110, 1e111, 1e112, 1e113, 1e114, 1e115, 1e116, 1e117, 1e118, 1e119,
1e120, 1e121, 1e122, 1e123, 1e124, 1e125, 1e126, 1e127, 1e128, 1e129,
1e130, 1e131, 1e132, 1e133, 1e134, 1e135, 1e136, 1e137, 1e138, 1e139,
1e140, 1e141, 1e142, 1e143, 1e144, 1e145, 1e146, 1e147, 1e148, 1e149,
1e150, 1e151, 1e152, 1e153, 1e154, 1e155, 1e156, 1e157, 1e158, 1e159,
1e160, 1e161, 1e162, 1e163, 1e164, 1e165, 1e166, 1e167, 1e168, 1e169,
1e170, 1e171, 1e172, 1e173, 1e174, 1e175, 1e176, 1e177, 1e178, 1e179,
1e180, 1e181, 1e182, 1e183, 1e184, 1e185, 1e186, 1e187, 1e188, 1e189,
1e190, 1e191, 1e192, 1e193, 1e194, 1e195, 1e196, 1e197, 1e198, 1e199,
1e200, 1e201, 1e202, 1e203, 1e204, 1e205, 1e206, 1e207, 1e208, 1e209,
1e210, 1e211, 1e212, 1e213, 1e214, 1e215, 1e216, 1e217, 1e218, 1e219,
1e220, 1e221, 1e222, 1e223, 1e224, 1e225, 1e226, 1e227, 1e228, 1e229,
1e230, 1e231, 1e232, 1e233, 1e234, 1e235, 1e236, 1e237, 1e238, 1e239,
1e240, 1e241, 1e242, 1e243, 1e244, 1e245, 1e246, 1e247, 1e248, 1e249,
1e250, 1e251, 1e252, 1e253, 1e254, 1e255, 1e256, 1e257, 1e258, 1e259,
1e260, 1e261, 1e262, 1e263, 1e264, 1e265, 1e266, 1e267, 1e268, 1e269,
1e270, 1e271, 1e272, 1e273, 1e274, 1e275, 1e276, 1e277, 1e278, 1e279,
1e280, 1e281, 1e282, 1e283, 1e284, 1e285, 1e286, 1e287, 1e288, 1e289,
1e290, 1e291, 1e292, 1e293, 1e294, 1e295, 1e296, 1e297, 1e298, 1e299,
1e300, 1e301, 1e302, 1e303, 1e304, 1e305, 1e306, 1e307, 1e308
};
time_t server_start_time, flush_status_time;
char mysql_home[FN_REFLEN], pidfile_name[FN_REFLEN], system_time_zone[30];
char *default_tz_name;
char log_error_file[FN_REFLEN], glob_hostname[FN_REFLEN], *opt_log_basename;
char mysql_real_data_home[FN_REFLEN],
lc_messages_dir[FN_REFLEN], reg_ext[FN_EXTLEN],
mysql_charsets_dir[FN_REFLEN],
*opt_init_file, *opt_tc_log_file, *opt_ddl_recovery_file;
char *lc_messages_dir_ptr= lc_messages_dir, *log_error_file_ptr;
char mysql_unpacked_real_data_home[FN_REFLEN];
size_t mysql_unpacked_real_data_home_len;
uint mysql_real_data_home_len, mysql_data_home_len= 1;
uint reg_ext_length;
const key_map key_map_empty(0);
key_map key_map_full(0); // Will be initialized later
DATE_TIME_FORMAT global_date_format, global_datetime_format, global_time_format;
Time_zone *default_tz;
const char *mysql_real_data_home_ptr= mysql_real_data_home;
extern "C" {
char server_version[SERVER_VERSION_LENGTH];
}
char *server_version_ptr;
char *mysqld_unix_port, *opt_mysql_tmpdir;
ulong thread_handling;
my_bool encrypt_binlog;
my_bool encrypt_tmp_disk_tables, encrypt_tmp_files;
/** name of reference on left expression in rewritten IN subquery */
const LEX_CSTRING in_left_expr_name= {STRING_WITH_LEN("<left expr>") };
/** name of additional condition */
const LEX_CSTRING in_having_cond= {STRING_WITH_LEN("<IN HAVING>") };
const LEX_CSTRING in_additional_cond= {STRING_WITH_LEN("<IN COND>") };
/** Number of connection errors when selecting on the listening port */
ulong connection_errors_select= 0;
/** Number of connection errors when accepting sockets in the listening port. */
ulong connection_errors_accept= 0;
/** Number of connection errors from TCP wrappers. */
ulong connection_errors_tcpwrap= 0;
/** Number of connection errors from internal server errors. */
ulong connection_errors_internal= 0;
/** Number of connection errors from the server max_connection limit. */
ulong connection_errors_max_connection= 0;
/** Number of errors when reading the peer address. */
ulong connection_errors_peer_addr= 0;
/* classes for comparation parsing/processing */
Eq_creator eq_creator;
Ne_creator ne_creator;
Gt_creator gt_creator;
Lt_creator lt_creator;
Ge_creator ge_creator;
Le_creator le_creator;
THD_list server_threads;
Rpl_filter* cur_rpl_filter;
Rpl_filter* global_rpl_filter;
Rpl_filter* binlog_filter;
struct system_variables global_system_variables;
/**
Following is just for options parsing, used with a difference against
global_system_variables.
TODO: something should be done to get rid of following variables
*/
const char *current_dbug_option="";
struct system_variables max_system_variables;
struct system_status_var global_status_var;
MY_TMPDIR mysql_tmpdir_list;
static MY_BITMAP temp_pool;
static mysql_mutex_t LOCK_temp_pool;
void temp_pool_clear_bit(uint bit)
{
mysql_mutex_lock(&LOCK_temp_pool);
bitmap_clear_bit(&temp_pool, bit);
mysql_mutex_unlock(&LOCK_temp_pool);
}
uint temp_pool_set_next()
{
mysql_mutex_lock(&LOCK_temp_pool);
uint res= bitmap_set_next(&temp_pool);
mysql_mutex_unlock(&LOCK_temp_pool);
return res;
}
CHARSET_INFO *system_charset_info, *files_charset_info ;
CHARSET_INFO *national_charset_info, *table_alias_charset;
CHARSET_INFO *character_set_filesystem;
CHARSET_INFO *error_message_charset_info;
MY_LOCALE *my_default_lc_messages;
MY_LOCALE *my_default_lc_time_names;
SHOW_COMP_OPTION have_ssl, have_symlink, have_dlopen, have_query_cache;
SHOW_COMP_OPTION have_geometry, have_rtree_keys;
SHOW_COMP_OPTION have_crypt, have_compress;
SHOW_COMP_OPTION have_profiling;
SHOW_COMP_OPTION have_openssl;
#ifndef EMBEDDED_LIBRARY
static std::atomic<char*> shutdown_user;
#endif //EMBEDDED_LIBRARY
std::atomic<my_thread_id> shutdown_thread_id;
/* Thread specific variables */
static thread_local THD *THR_THD;
/**
Get current THD object from thread local data
@retval The THD object for the thread, NULL if not connection thread
*/
MYSQL_THD _current_thd() { return THR_THD; }
void set_current_thd(THD *thd) { THR_THD= thd; }
/*
LOCK_start_thread is used to syncronize thread start and stop with
other threads.
It also protects these variables:
select_thread_in_use
slave_init_thread_running
check_temp_dir() call
*/
mysql_mutex_t LOCK_start_thread;
mysql_mutex_t
LOCK_status, LOCK_error_log, LOCK_short_uuid_generator,
LOCK_delayed_insert, LOCK_delayed_status, LOCK_delayed_create,
LOCK_crypt,
LOCK_global_system_variables,
LOCK_user_conn,
LOCK_error_messages;
mysql_mutex_t LOCK_stats, LOCK_global_user_client_stats,
LOCK_global_table_stats, LOCK_global_index_stats;
/* This protects against changes in master_info_index */
mysql_mutex_t LOCK_active_mi;
/* This protects connection id.*/
mysql_mutex_t LOCK_thread_id;
/**
The below lock protects access to two global server variables:
max_prepared_stmt_count and prepared_stmt_count. These variables
set the limit and hold the current total number of prepared statements
in the server, respectively. As PREPARE/DEALLOCATE rate in a loaded
server may be fairly high, we need a dedicated lock.
*/
mysql_mutex_t LOCK_prepared_stmt_count;
#ifdef HAVE_OPENSSL
mysql_mutex_t LOCK_des_key_file;
#endif
mysql_mutex_t LOCK_backup_log, LOCK_optimizer_costs;
mysql_rwlock_t LOCK_grant, LOCK_sys_init_connect, LOCK_sys_init_slave;
mysql_rwlock_t LOCK_ssl_refresh;
mysql_rwlock_t LOCK_all_status_vars;
mysql_prlock_t LOCK_system_variables_hash;
mysql_cond_t COND_start_thread;
pthread_t signal_thread;
pthread_attr_t connection_attrib;
mysql_mutex_t LOCK_server_started;
mysql_cond_t COND_server_started;
int mysqld_server_started=0, mysqld_server_initialized= 0;
File_parser_dummy_hook file_parser_dummy_hook;
/* replication parameters, if master_host is not NULL, we are a slave */
uint report_port= 0;
ulong master_retry_count=0;
char *master_info_file;
char *relay_log_info_file, *report_user, *report_password, *report_host;
char *opt_relay_logname = 0, *opt_relaylog_index_name=0;
char *opt_logname, *opt_slow_logname, *opt_bin_logname;
char *opt_binlog_index_name=0;
/* Static variables */
my_bool opt_stack_trace;
my_bool opt_expect_abort= 0, opt_bootstrap= 0;
static my_bool opt_myisam_log;
static int cleanup_done;
static ulong opt_specialflag;
char *mysql_home_ptr, *pidfile_name_ptr;
/** Initial command line arguments (count), after load_defaults().*/
static int defaults_argc;
/**
Initial command line arguments (arguments), after load_defaults().
This memory is allocated by @c load_defaults() and should be freed
using @c free_defaults().
Do not modify defaults_argc / defaults_argv,
use remaining_argc / remaining_argv instead to parse the command
line arguments in multiple steps.
*/
static char **defaults_argv;
/** Remaining command line arguments (count), filtered by handle_options().*/
static int remaining_argc;
/** Remaining command line arguments (arguments), filtered by handle_options().*/
static char **remaining_argv;
int orig_argc;
char **orig_argv;
static struct my_option pfs_early_options[]=
{
#ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
{"performance_schema_instrument", OPT_PFS_INSTRUMENT,
"Default startup value for a performance schema instrument.",
&pfs_param.m_pfs_instrument, &pfs_param.m_pfs_instrument, 0, GET_STR,
OPT_ARG, 0, 0, 0, 0, 0, 0},
{"performance_schema_consumer_events_stages_current", 0,
"Default startup value for the events_stages_current consumer.",
&pfs_param.m_consumer_events_stages_current_enabled,
&pfs_param.m_consumer_events_stages_current_enabled, 0, GET_BOOL,
OPT_ARG, FALSE, 0, 0, 0, 0, 0},
{"performance_schema_consumer_events_stages_history", 0,
"Default startup value for the events_stages_history consumer.",
&pfs_param.m_consumer_events_stages_history_enabled,
&pfs_param.m_consumer_events_stages_history_enabled, 0,
GET_BOOL, OPT_ARG, FALSE, 0, 0, 0, 0, 0},
{"performance_schema_consumer_events_stages_history_long", 0,
"Default startup value for the events_stages_history_long consumer.",
&pfs_param.m_consumer_events_stages_history_long_enabled,
&pfs_param.m_consumer_events_stages_history_long_enabled, 0,
GET_BOOL, OPT_ARG, FALSE, 0, 0, 0, 0, 0},
{"performance_schema_consumer_events_statements_current", 0,
"Default startup value for the events_statements_current consumer.",
&pfs_param.m_consumer_events_statements_current_enabled,
&pfs_param.m_consumer_events_statements_current_enabled, 0, GET_BOOL,
OPT_ARG, FALSE, 0, 0, 0, 0, 0},
{"performance_schema_consumer_events_statements_history", 0,
"Default startup value for the events_statements_history consumer.",
&pfs_param.m_consumer_events_statements_history_enabled,
&pfs_param.m_consumer_events_statements_history_enabled, 0,
GET_BOOL, OPT_ARG, FALSE, 0, 0, 0, 0, 0},
{"performance_schema_consumer_events_statements_history_long", 0,
"Default startup value for the events_statements_history_long consumer.",
&pfs_param.m_consumer_events_statements_history_long_enabled,
&pfs_param.m_consumer_events_statements_history_long_enabled, 0,
GET_BOOL, OPT_ARG, FALSE, 0, 0, 0, 0, 0},
{"performance_schema_consumer_events_transactions_current", 0,
"Default startup value for the events_transactions_current consumer.",
&pfs_param.m_consumer_events_transactions_current_enabled,
&pfs_param.m_consumer_events_transactions_current_enabled, 0,
GET_BOOL, OPT_ARG, FALSE, 0, 0, 0, 0, 0},
{"performance_schema_consumer_events_transactions_history", 0,
"Default startup value for the events_transactions_history consumer.",
&pfs_param.m_consumer_events_transactions_history_enabled,
&pfs_param.m_consumer_events_transactions_history_enabled, 0,
GET_BOOL, OPT_ARG, FALSE, 0, 0, 0, 0, 0},
{"performance_schema_consumer_events_transactions_history_long", 0,
"Default startup value for the events_transactions_history_long consumer.",
&pfs_param.m_consumer_events_transactions_history_long_enabled,
&pfs_param.m_consumer_events_transactions_history_long_enabled, 0,
GET_BOOL, OPT_ARG, FALSE, 0, 0, 0, 0, 0},
{"performance_schema_consumer_events_waits_current", 0,
"Default startup value for the events_waits_current consumer.",
&pfs_param.m_consumer_events_waits_current_enabled,
&pfs_param.m_consumer_events_waits_current_enabled, 0,
GET_BOOL, OPT_ARG, FALSE, 0, 0, 0, 0, 0},
{"performance_schema_consumer_events_waits_history", 0,
"Default startup value for the events_waits_history consumer.",
&pfs_param.m_consumer_events_waits_history_enabled,
&pfs_param.m_consumer_events_waits_history_enabled, 0,
GET_BOOL, OPT_ARG, FALSE, 0, 0, 0, 0, 0},
{"performance_schema_consumer_events_waits_history_long", 0,
"Default startup value for the events_waits_history_long consumer.",
&pfs_param.m_consumer_events_waits_history_long_enabled,
&pfs_param.m_consumer_events_waits_history_long_enabled, 0,
GET_BOOL, OPT_ARG, FALSE, 0, 0, 0, 0, 0},
{"performance_schema_consumer_global_instrumentation", 0,
"Default startup value for the global_instrumentation consumer.",
&pfs_param.m_consumer_global_instrumentation_enabled,
&pfs_param.m_consumer_global_instrumentation_enabled, 0,
GET_BOOL, OPT_ARG, TRUE, 0, 0, 0, 0, 0},
{"performance_schema_consumer_thread_instrumentation", 0,
"Default startup value for the thread_instrumentation consumer.",
&pfs_param.m_consumer_thread_instrumentation_enabled,
&pfs_param.m_consumer_thread_instrumentation_enabled, 0,
GET_BOOL, OPT_ARG, TRUE, 0, 0, 0, 0, 0},
{"performance_schema_consumer_statements_digest", 0,
"Default startup value for the statements_digest consumer.",
&pfs_param.m_consumer_statement_digest_enabled,
&pfs_param.m_consumer_statement_digest_enabled, 0,
GET_BOOL, OPT_ARG, TRUE, 0, 0, 0, 0, 0},
#endif /* WITH_PERFSCHEMA_STORAGE_ENGINE */
{"getopt-prefix-matching", 0,
"Recognize command-line options by their unambiguos prefixes.",
&my_getopt_prefix_matching, &my_getopt_prefix_matching, 0, GET_BOOL,
NO_ARG, 1, 0, 1, 0, 0, 0}
};
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_log_ddl,
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;
PSI_file_key key_file_query_log, key_file_slow_log;
PSI_file_key key_file_relaylog, key_file_relaylog_index,
key_file_relaylog_cache, key_file_relaylog_index_cache;
PSI_file_key key_file_binlog_state;
#ifdef HAVE_PSI_INTERFACE
#ifdef HAVE_MMAP
PSI_mutex_key key_PAGE_lock, key_LOCK_sync, key_LOCK_active, key_LOCK_pool,
key_LOCK_pending_checkpoint;
#endif /* HAVE_MMAP */
#ifdef HAVE_OPENSSL
PSI_mutex_key key_LOCK_des_key_file;
#endif /* HAVE_OPENSSL */
PSI_mutex_key key_BINLOG_LOCK_index, key_BINLOG_LOCK_xid_list,
key_BINLOG_LOCK_binlog_background_thread,
key_LOCK_binlog_end_pos,
key_delayed_insert_mutex, key_hash_filo_lock, key_LOCK_active_mi,
key_LOCK_crypt, key_LOCK_delayed_create,
key_LOCK_delayed_insert, key_LOCK_delayed_status, key_LOCK_error_log,
key_LOCK_gdl, key_LOCK_global_system_variables,
key_LOCK_manager, key_LOCK_backup_log, key_LOCK_optimizer_costs,
key_LOCK_prepared_stmt_count,
key_LOCK_rpl_status, key_LOCK_server_started,
key_LOCK_status, key_LOCK_temp_pool,
key_LOCK_system_variables_hash, key_LOCK_thd_data, key_LOCK_thd_kill,
key_LOCK_user_conn, key_LOCK_uuid_short_generator, key_LOG_LOCK_log,
key_master_info_data_lock, key_master_info_run_lock,
key_master_info_sleep_lock, key_master_info_start_stop_lock,
key_master_info_start_alter_lock,
key_master_info_start_alter_list_lock,
key_mutex_slave_reporting_capability_err_lock, key_relay_log_info_data_lock,
key_rpl_group_info_sleep_lock,
key_relay_log_info_log_space_lock, key_relay_log_info_run_lock,
key_structure_guard_mutex, key_TABLE_SHARE_LOCK_ha_data,
key_LOCK_error_messages,
key_LOCK_start_thread,
key_PARTITION_LOCK_auto_inc;
PSI_mutex_key key_RELAYLOG_LOCK_index;
PSI_mutex_key key_LOCK_relaylog_end_pos;
PSI_mutex_key key_LOCK_thread_id;
PSI_mutex_key key_LOCK_slave_state, key_LOCK_binlog_state,
key_LOCK_rpl_thread, key_LOCK_rpl_thread_pool, key_LOCK_parallel_entry;
PSI_mutex_key key_LOCK_rpl_semi_sync_master_enabled;
PSI_mutex_key key_LOCK_binlog;
PSI_mutex_key key_LOCK_stats,
key_LOCK_global_user_client_stats, key_LOCK_global_table_stats,
key_LOCK_global_index_stats,
key_LOCK_wakeup_ready, key_LOCK_wait_commit;
PSI_mutex_key key_LOCK_gtid_waiting;
PSI_mutex_key key_LOCK_after_binlog_sync;
PSI_mutex_key key_LOCK_prepare_ordered, key_LOCK_commit_ordered;
PSI_mutex_key key_TABLE_SHARE_LOCK_share;
PSI_mutex_key key_TABLE_SHARE_LOCK_statistics;
PSI_mutex_key key_LOCK_ack_receiver;
PSI_mutex_key key_TABLE_SHARE_LOCK_rotation;
PSI_cond_key key_TABLE_SHARE_COND_rotation;
static PSI_mutex_info all_server_mutexes[]=
{
#ifdef HAVE_MMAP
{ &key_PAGE_lock, "PAGE::lock", 0},
{ &key_LOCK_sync, "TC_LOG_MMAP::LOCK_sync", 0},
{ &key_LOCK_active, "TC_LOG_MMAP::LOCK_active", 0},
{ &key_LOCK_pool, "TC_LOG_MMAP::LOCK_pool", 0},
{ &key_LOCK_pool, "TC_LOG_MMAP::LOCK_pending_checkpoint", 0},
#endif /* HAVE_MMAP */
#ifdef HAVE_OPENSSL
{ &key_LOCK_des_key_file, "LOCK_des_key_file", PSI_FLAG_GLOBAL},
#endif /* HAVE_OPENSSL */
{ &key_BINLOG_LOCK_index, "MYSQL_BIN_LOG::LOCK_index", 0},
{ &key_BINLOG_LOCK_xid_list, "MYSQL_BIN_LOG::LOCK_xid_list", 0},
{ &key_BINLOG_LOCK_binlog_background_thread, "MYSQL_BIN_LOG::LOCK_binlog_background_thread", 0},
{ &key_LOCK_binlog_end_pos, "MYSQL_BIN_LOG::LOCK_binlog_end_pos", 0 },
{ &key_RELAYLOG_LOCK_index, "MYSQL_RELAY_LOG::LOCK_index", 0},
{ &key_LOCK_relaylog_end_pos, "MYSQL_RELAY_LOG::LOCK_binlog_end_pos", 0},
{ &key_delayed_insert_mutex, "Delayed_insert::mutex", 0},
{ &key_hash_filo_lock, "hash_filo::lock", 0},
{ &key_LOCK_active_mi, "LOCK_active_mi", PSI_FLAG_GLOBAL},
{ &key_LOCK_backup_log, "LOCK_backup_log", PSI_FLAG_GLOBAL},
{ &key_LOCK_optimizer_costs, "LOCK_optimizer_costs", PSI_FLAG_GLOBAL},
{ &key_LOCK_temp_pool, "LOCK_temp_pool", PSI_FLAG_GLOBAL},
{ &key_LOCK_thread_id, "LOCK_thread_id", PSI_FLAG_GLOBAL},
{ &key_LOCK_crypt, "LOCK_crypt", PSI_FLAG_GLOBAL},
{ &key_LOCK_delayed_create, "LOCK_delayed_create", PSI_FLAG_GLOBAL},
{ &key_LOCK_delayed_insert, "LOCK_delayed_insert", PSI_FLAG_GLOBAL},
{ &key_LOCK_delayed_status, "LOCK_delayed_status", PSI_FLAG_GLOBAL},
{ &key_LOCK_error_log, "LOCK_error_log", PSI_FLAG_GLOBAL},
{ &key_LOCK_gdl, "LOCK_gdl", PSI_FLAG_GLOBAL},
{ &key_LOCK_global_system_variables, "LOCK_global_system_variables", PSI_FLAG_GLOBAL},
{ &key_LOCK_manager, "LOCK_manager", PSI_FLAG_GLOBAL},
{ &key_LOCK_prepared_stmt_count, "LOCK_prepared_stmt_count", PSI_FLAG_GLOBAL},
{ &key_LOCK_rpl_status, "LOCK_rpl_status", PSI_FLAG_GLOBAL},
{ &key_LOCK_server_started, "LOCK_server_started", PSI_FLAG_GLOBAL},
{ &key_LOCK_status, "LOCK_status", PSI_FLAG_GLOBAL},
{ &key_LOCK_system_variables_hash, "LOCK_system_variables_hash", PSI_FLAG_GLOBAL},
{ &key_LOCK_stats, "LOCK_stats", PSI_FLAG_GLOBAL},
{ &key_LOCK_global_user_client_stats, "LOCK_global_user_client_stats", PSI_FLAG_GLOBAL},
{ &key_LOCK_global_table_stats, "LOCK_global_table_stats", PSI_FLAG_GLOBAL},
{ &key_LOCK_global_index_stats, "LOCK_global_index_stats", PSI_FLAG_GLOBAL},
{ &key_LOCK_wakeup_ready, "THD::LOCK_wakeup_ready", 0},