ut0atomic_sysvar.h File Reference

#include <atomic>
#include <functional>
#include <type_traits>
#include <vector>
#include "sql_class.h"

Go to the source code of this file.

Classes
class	Atomic_sysvar< T >
	A helper class for numeric sysvars which can be read in thread-safe way. More...
struct	Atomic_sysvar< T >::Data
	Contains all members of Atomic_sysvar<T> in a standard layout struct - which, among other things, means we can't mix private with public, use virtual methods, nor std::function<>. More...

Macros
#define	ATOMIC_SYSVAR_ULONG(sysvar_name_suffix, flags, description, validate, after_change, default_value, min_value, max_value, value_granularity)

Variables
std::vector< std::function< void()> >	innodb_sysvar_initializers
	Set of callbacks to be executed in innodb_init_params() to react to changes server layer did directly to in-memory variables as a result of processing the command line arguments and config files without calling on-update callbacks. More...

Macro Definition Documentation

ATOMIC_SYSVAR_ULONG

#define ATOMIC_SYSVAR_ULONG	(		sysvar_name_suffix,
			flags,
			description,
			validate,
			after_change,
			default_value,
			min_value,
			max_value,
			value_granularity
	)

Value:

  Atomic_sysvar<ulong> innodb_##sysvar_name_suffix(after_change);              \
  static MYSQL_SYSVAR_ULONG(                                                   \
      sysvar_name_suffix, innodb_##sysvar_name_suffix.registrable(), flags,    \
      description, validate, innodb_##sysvar_name_suffix.update,               \
      default_value, min_value, max_value, value_granularity)

Variable Documentation

innodb_sysvar_initializers

std::vector<std::function<void()> > innodb_sysvar_initializers

extern

Set of callbacks to be executed in innodb_init_params() to react to changes server layer did directly to in-memory variables as a result of processing the command line arguments and config files without calling on-update callbacks.

Note that mysql-auto.cnf (which is generated by SET PERSIST) is processed via regular "update" path as if user performed SET, and this happens after innodb_init_params()