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MySQL 9.1.0
Source Code Documentation
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MySQL 9.1.0
Source Code Documentation
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The class for keycache_* variables. More...
#include <sys_vars.h>
Public Member Functions | |
| Sys_var_keycache (const char *name_arg, const char *comment, int flag_args, ptrdiff_t off, size_t size, CMD_LINE getopt, ulonglong min_val, ulonglong max_val, ulonglong def_val, uint block_size, PolyLock *lock, enum binlog_status_enum binlog_status_arg, on_check_function on_check_func, keycache_update_function on_update_func, const char *substitute=nullptr) | |
| bool | global_update (THD *thd, set_var *var) override |
| const uchar * | global_value_ptr (THD *thd, std::string_view keycache_name) override |
 Public Member Functions inherited from Sys_var_integer< T, ARGT, SHOWT, SIGNED > | |
| Sys_var_integer (const char *name_arg, const char *comment, int flag_args, ptrdiff_t off, size_t size, CMD_LINE getopt, T min_val, T max_val, T def_val, uint block_size, PolyLock *lock=nullptr, enum binlog_status_enum binlog_status_arg=VARIABLE_NOT_IN_BINLOG, on_check_function on_check_func=nullptr, on_update_function on_update_func=nullptr, const char *substitute=nullptr, int parse_flag=PARSE_NORMAL) | |
| bool | do_check (THD *thd, set_var *var) override |
| bool | session_update (THD *thd, set_var *var) override |
| bool | check_update_type (Item_result type) override |
| void | session_save_default (THD *thd, set_var *var) override |
| save the session default value of the variable in var More... | |
| void | global_save_default (THD *, set_var *var) override |
| save the global default value of the variable in var More... | |
| void | saved_value_to_string (THD *, set_var *var, char *def_val) override |
| This function converts value stored in save_result to string. More... | |
| Public Member Functions inherited from sys_var | |
| sys_var (sys_var_chain *chain, const char *name_arg, const char *comment, int flag_args, ptrdiff_t off, int getopt_id, enum get_opt_arg_type getopt_arg_type, SHOW_TYPE show_val_type_arg, longlong def_val, PolyLock *lock, enum binlog_status_enum binlog_status_arg, on_check_function on_check_func, on_update_function on_update_func, const char *substitute, int parse_flag, sys_var *persisted_alias=nullptr, bool is_persisted_deprecated=false) | |
| sys_var constructor More... | |
| virtual | ~sys_var ()=default |
| const char * | get_deprecation_substitute () |
| virtual void | cleanup () |
| All the cleanup procedures should be performed here. More... | |
| virtual sys_var_pluginvar * | cast_pluginvar () |
| downcast for sys_var_pluginvar. More... | |
| bool | check (THD *thd, set_var *var) |
| const uchar * | value_ptr (THD *running_thd, THD *target_thd, enum_var_type type, std::string_view keycache_name) |
| const uchar * | value_ptr (THD *thd, enum_var_type type, std::string_view keycache_name) |
| virtual void | update_default (longlong new_def_value) |
| virtual longlong | get_default () |
| virtual longlong | get_min_value () |
| virtual ulonglong | get_max_value () |
| virtual ulong | get_var_type () |
| Returns variable type. More... | |
| virtual void | set_arg_source (get_opt_arg_source *) |
| virtual void | set_is_plugin (bool) |
| virtual enum_variable_source | get_source () |
| virtual const char * | get_source_name () |
| virtual void | set_source (enum_variable_source src) |
| virtual bool | set_source_name (const char *path) |
| virtual bool | set_user (const char *usr) |
| virtual const char * | get_user () |
| virtual const char * | get_host () |
| virtual bool | set_host (const char *hst) |
| virtual ulonglong | get_timestamp () const |
| virtual void | set_user_host (THD *thd) |
| my_option * | get_option () |
| virtual void | set_timestamp () |
| virtual void | set_timestamp (ulonglong ts) |
| virtual bool | is_non_persistent () |
| bool | set_default (THD *thd, set_var *var) |
| Update the system variable with the default value from either session or global scope. More... | |
| bool | update (THD *thd, set_var *var) |
| SHOW_TYPE | show_type () |
| int | scope () const |
| const CHARSET_INFO * | charset (THD *thd) |
| bool | is_readonly () const |
| bool | not_visible () const |
| bool | is_trilevel () const |
| bool | is_persist_readonly () const |
| bool | is_parse_early () const |
| bool | is_sensitive () const |
| bool | is_hint_updateable () const |
| Check if the variable can be set using SET_VAR hint. More... | |
| bool | is_struct () |
| the following is only true for keycache variables, that support the syntax @keycache_name.variable_name More... | |
| bool | is_written_to_binlog (enum_var_type type) |
| bool | check_scope (enum_var_type query_type) |
| Return true for success if: Global query and variable scope is GLOBAL or SESSION, or Session query and variable scope is SESSION or ONLY_SESSION. More... | |
| bool | is_global_persist (enum_var_type type) |
| bool | is_settable_at_command_line () |
| Return true if settable at the command line. More... | |
| bool | register_option (std::vector< my_option > *array, int parse_flags) |
| void | do_deprecated_warning (THD *thd) |
| Item * | copy_value (THD *thd) |
| Create item from system variable value. More... | |
| void | save_default (THD *thd, set_var *var) |
| bool | check_if_sensitive_in_context (THD *, bool suppress_errors=true) const |
Private Attributes | |
| keycache_update_function | keycache_update |
Additional Inherited Members | |
| Public Types inherited from sys_var | |
| enum | flag_enum { GLOBAL = 0x0001 , SESSION = 0x0002 , ONLY_SESSION = 0x0004 , SCOPE_MASK = 0x03FF , READONLY = 0x0400 , ALLOCATED = 0x0800 , INVISIBLE = 0x1000 , TRI_LEVEL = 0x2000 , NOTPERSIST = 0x4000 , HINT_UPDATEABLE = 0x8000 , PERSIST_AS_READ_ONLY = 0x10000 , SENSITIVE = 0x20000 } |
| enum | binlog_status_enum { VARIABLE_NOT_IN_BINLOG , SESSION_VARIABLE_IN_BINLOG } |
| Enumeration type to indicate for a system variable whether it will be written to the binlog or not. More... | |
| Public Attributes inherited from sys_var | |
| sys_var * | next |
| LEX_CSTRING | name |
| sys_var * | m_persisted_alias |
| If the variable has an alias in the persisted variables file, this should point to it. More... | |
| bool | m_is_persisted_deprecated |
| If m_persist_alias is set, and the current variable is deprecated and m_persist_alias is the recommended substitute, then this flag should be set to true. More... | |
| enum sys_var::binlog_status_enum | binlog_status |
| Global system variable attributes. More... | |
| std::map< std::string, std::string > | m_global_attributes |
| Static Public Attributes inherited from sys_var | |
| static const int | PARSE_EARLY = 1 |
| static const int | PARSE_NORMAL = 2 |
| Protected Types inherited from sys_var | |
| typedef bool(* | on_check_function) (sys_var *self, THD *thd, set_var *var) |
| typedef bool(* | pre_update_function) (sys_var *self, THD *thd, set_var *var) |
| typedef bool(* | on_update_function) (sys_var *self, THD *thd, enum_var_type type) |
| Protected Member Functions inherited from sys_var | |
| virtual const uchar * | session_value_ptr (THD *running_thd, THD *target_thd, std::string_view keycache_name) |
| A pointer to a value of the variable for SHOW. More... | |
| uchar * | session_var_ptr (THD *thd) |
| A pointer to a storage area of the variable, to the raw data. More... | |
| uchar * | global_var_ptr () |
| Protected Attributes inherited from sys_var | |
| int | flags |
| or'ed flag_enum values More... | |
| int | m_parse_flag |
| either PARSE_EARLY or PARSE_NORMAL. More... | |
| const SHOW_TYPE | show_val_type |
| what value_ptr() returns for sql_show.cc More... | |
| my_option | option |
| min, max, default values are stored here More... | |
| PolyLock * | guard |
| second lock that protects the variable More... | |
| ptrdiff_t | offset |
| offset to the value from global_system_variables More... | |
| on_check_function | on_check |
| pre_update_function | pre_update |
| Pointer to function to be invoked before updating system variable (but after calling on_check hook), while we do not hold any locks yet. More... | |
| on_update_function | on_update |
| const char *const | deprecation_substitute |
| bool | is_os_charset |
| true if the value is in character_set_filesystem More... | |
| struct get_opt_arg_source | source |
| char | user [USERNAME_CHAR_LENGTH+1] |
| char | host [HOSTNAME_LENGTH+1] |
| ulonglong | timestamp |
The class for keycache_* variables.
Supports structured names, keycache_name.variable_name.
Class specific constructor arguments: everything derived from Sys_var_ulonglong
Backing store: ulonglong
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inline |
Abort if some other thread is changing the key cache
Reimplemented from Sys_var_integer< T, ARGT, SHOWT, SIGNED >.
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inlineoverridevirtual |
Reimplemented from sys_var.
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private |
1.9.2