Gtid_set_ref Class Reference

This class extends Gtid_set to include a reference counter. More...

#include <certifier.h>

Inheritance diagram for Gtid_set_ref:

Public Member Functions
	Gtid_set_ref (Sid_map *sid_map, int64 parallel_applier_sequence_number)
virtual	~Gtid_set_ref ()=default
size_t	link ()
	Increment the number of references by one. More...
size_t	unlink ()
	Decrement the number of references by one. More...
void	set_garbage_collect_counter (uint64 ver)
	Set garbage collector counter when Gtid_set_ref was checked is subset no equals of gtid_stable_set. More...
uint64	get_garbage_collect_counter ()
	Get garbage collector counter when Gtid_set_ref was checked is subset no equals of gtid_stable_set. More...
int64	get_parallel_applier_sequence_number () const
Public Member Functions inherited from Gtid_set
	Gtid_set (Sid_map *sid_map, Checkable_rwlock *sid_lock=nullptr)
	Constructs a new, empty Gtid_set. More...
	Gtid_set (Sid_map *sid_map, const char *text, enum_return_status *status, Checkable_rwlock *sid_lock=nullptr)
	Constructs a new Gtid_set that contains the gtids in the given string, in the same format as add_gtid_text(char *). More...
	~Gtid_set ()
	Destroy this Gtid_set. More...
void	claim_memory_ownership (bool claim)
	Claim ownership of memory. More...
void	clear ()
	Removes all gtids from this Gtid_set. More...
void	clear_set_and_sid_map ()
	Removes all gtids from this Gtid_set and clear all the sidnos used by the Gtid_set and it's SID map. More...
void	_add_gtid (rpl_sidno sidno, rpl_gno gno)
	Adds the given GTID to this Gtid_set. More...
void	_remove_gtid (rpl_sidno sidno, rpl_gno gno)
	Removes the given GTID from this Gtid_set. More...
void	_add_gtid (const Gtid &gtid)
	Adds the given GTID to this Gtid_set. More...
void	_remove_gtid (const Gtid &gtid)
	Removes the given GTID from this Gtid_set. More...
enum_return_status	add_gtid_set (const Gtid_set *other)
	Adds all gtids from the given Gtid_set to this Gtid_set. More...
void	remove_gtid_set (const Gtid_set *other)
	Removes all gtids in the given Gtid_set from this Gtid_set. More...
void	remove_intervals_for_sidno (Gtid_set *other, rpl_sidno sidno)
	Removes all intervals of 'other' for a given SIDNO, from 'this'. More...
enum_return_status	add_gtid_text (const char *text, bool *anonymous=nullptr, bool *starts_with_plus=nullptr)
	Adds the set of GTIDs represented by the given string to this Gtid_set. More...
enum_return_status	add_gtid_encoding (const uchar *encoded, size_t length, size_t *actual_length=nullptr)
	Decodes a Gtid_set from the given string. More...
bool	contains_gtid (rpl_sidno sidno, rpl_gno gno) const
	Return true iff the given GTID exists in this set. More...
bool	contains_gtid (const Gtid &gtid) const
	Return true iff the given GTID exists in this set. More...
rpl_gno	get_last_gno (rpl_sidno sidno) const
rpl_sidno	get_max_sidno () const
	Returns the maximal sidno that this Gtid_set currently has space for. More...
enum_return_status	ensure_sidno (rpl_sidno sidno)
	Allocates space for all sidnos up to the given sidno in the array of intervals. More...
bool	is_subset (const Gtid_set *super) const
	Returns true if this Gtid_set is a subset of the other Gtid_set. More...
bool	is_subset_not_equals (const Gtid_set *super) const
	Returns true if this Gtid_set is a non equal subset of the other Gtid_set. More...
bool	is_subset_for_sid (const Gtid_set *super, rpl_sidno superset_sidno, rpl_sidno subset_sidno) const
	Returns true if this Gtid_set is a subset of the given gtid_set on the given superset_sidno and subset_sidno. More...
bool	is_intersection_nonempty (const Gtid_set *other) const
	Returns true if there is a least one element of this Gtid_set in the other Gtid_set. More...
enum_return_status	intersection (const Gtid_set *other, Gtid_set *result)
	Add the intersection of this Gtid_set and the other Gtid_set to result. More...
bool	is_empty () const
	Returns true if this Gtid_set is empty. More...
bool	is_size_greater_than_or_equal (ulonglong num) const
	Return true if the size of the set is greater than or equal to the given number. More...
ulonglong	get_gtid_count (rpl_sidno sidno) const
	What is the count of all the GTIDs in all intervals for a sidno. More...
bool	contains_sidno (rpl_sidno sidno) const
	Returns true if this Gtid_set contains at least one GTID with the given SIDNO. More...
size_t	get_string_length (const String_format *string_format=nullptr) const
	Returns the length of the output from to_string. More...
size_t	to_string (char *buf, bool need_lock=false, const String_format *string_format=nullptr) const
	Formats this Gtid_set as a string and saves in a given buffer. More...
long	to_string (char **buf, bool need_lock=false, const String_format *string_format=nullptr) const
	Formats a Gtid_set as a string and saves in a newly allocated buffer. More...
void	print (bool need_lock=false, const Gtid_set::String_format *sf=nullptr) const
	Debug only: Print this Gtid_set to stdout. More...
void	dbug_print (const char *text="", bool need_lock=false, const Gtid_set::String_format *sf=nullptr) const
	Print this Gtid_set to the trace file if debug is enabled; no-op otherwise. More...
void	get_gtid_intervals (std::list< Gtid_interval > *gtid_intervals) const
	Gets all gtid intervals from this Gtid_set. More...
Sid_map *	get_sid_map () const
	Return the Sid_map associated with this Gtid_set. More...
void	add_interval_memory (int n_intervals, Interval *intervals_param)
	Provides an array of Intervals that this Gtid_set can use when gtids are subsequently added. More...
void	encode (uchar *buf) const
	Encodes this Gtid_set as a binary string. More...
size_t	get_encoded_length () const
	Returns the length of this Gtid_set when encoded using the encode() function. More...

Private Attributes
size_t	reference_counter
int64	parallel_applier_sequence_number
uint64	garbage_collect_counter

Additional Inherited Members
Static Public Member Functions inherited from Gtid_set
static bool	is_valid (const char *text)
	Returns true if the given string is a valid specification of a Gtid_set, false otherwise. More...
Static Public Attributes inherited from Gtid_set
static PSI_mutex_key	key_gtid_executed_free_intervals_mutex
static const String_format	default_string_format
	The default String_format: the format understood by add_gtid_text(const char *). More...
static const String_format	sql_string_format
	String_format useful to generate an SQL string: the string is wrapped in single quotes and there is a newline between SIDs. More...
static const String_format	commented_string_format
	String_format for printing the Gtid_set commented: the string is not quote-wrapped, and every SID is on a new line with a leading '# '. More...

Detailed Description

This class extends Gtid_set to include a reference counter.

It is for Certifier only, so it is single-threaded and no locks are needed since Certifier already ensures sequential use.

It is to be used to share by multiple entries in the certification info and released when the last reference to it needs to be freed.

Constructor & Destructor Documentation

Gtid_set_ref()

Gtid_set_ref::Gtid_set_ref ( Sid_map *  sid_map, int64  parallel_applier_sequence_number  )

inline

~Gtid_set_ref()

virtual Gtid_set_ref::~Gtid_set_ref ( )

virtualdefault

Member Function Documentation

get_garbage_collect_counter()

uint64 Gtid_set_ref::get_garbage_collect_counter ( )

inline

Get garbage collector counter when Gtid_set_ref was checked is subset no equals of gtid_stable_set.

Returns

garbage collect counter

get_parallel_applier_sequence_number()

int64 Gtid_set_ref::get_parallel_applier_sequence_number ( ) const

inline

link()

size_t Gtid_set_ref::link ( )

inline

Increment the number of references by one.

Returns

the number of references

set_garbage_collect_counter()

void Gtid_set_ref::set_garbage_collect_counter ( uint64  ver )

inline

Set garbage collector counter when Gtid_set_ref was checked is subset no equals of gtid_stable_set.

unlink()

size_t Gtid_set_ref::unlink ( )

inline

Decrement the number of references by one.

Returns

the number of references

Member Data Documentation

garbage_collect_counter

uint64 Gtid_set_ref::garbage_collect_counter

private

parallel_applier_sequence_number

int64 Gtid_set_ref::parallel_applier_sequence_number

private

reference_counter

size_t Gtid_set_ref::reference_counter

private

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The documentation for this class was generated from the following file:

• plugin/group_replication/include/certifier.h