#include <rpl_gtid.h>

Classes
class	Gtid_iterator
struct	Node
	Represents one owned group.

Public Member Functions
	Owned_gtids (Checkable_rwlock *sid_lock)
	~Owned_gtids ()
	Destroys this Owned_gtids.
enum_return_status	add_gtid_owner (const Gtid &gtid, my_thread_id owner)
my_thread_id	get_owner (const Gtid &gtid) const
void	remove_gtid (const Gtid &gtid)
enum_return_status	ensure_sidno (rpl_sidno sidno)
bool	is_intersection_nonempty (const Gtid_set *other) const
bool	is_empty () const
	Returns true if this Owned_gtids is empty.
rpl_sidno	get_max_sidno () const
	Returns the maximal sidno that this Owned_gtids currently has space for.
int	to_string (char *out) const
size_t	get_max_string_length () const
bool	thread_owns_anything (my_thread_id thd_id) const
char *	to_string () const
void	print () const
	Debug only: print this Owned_gtids to stdout.
void	dbug_print (const char *text="") const

Detailed Description

Represents the set of GTIDs that are owned by some thread.

This data structure has a read-write lock that protects the number of SIDNOs. The lock is provided by the invoker of the constructor and it is generally the caller's responsibility to acquire the read lock. Access methods assert that the caller already holds the read (or write) lock. If a method of this class grows the number of SIDNOs, then the method temporarily upgrades this lock to a write lock and then degrades it to a read lock again; there will be a short period when the lock is not held at all.

The internal representation is a DYNAMIC_ARRAY that maps SIDNO to HASH, where each HASH maps GNO to my_thread_id.

Definition at line 1747 of file rpl_gtid.h.

Constructor & Destructor Documentation

Owned_gtids::Owned_gtids ( Checkable_rwlock * sid_lock )

Constructs a new, empty Owned_gtids object.

Parameters

sid_lock Read-write lock that protects updates to the number of SIDs.

Definition at line 24 of file rpl_gtid_owned.cc.

Member Function Documentation

enum_return_status Owned_gtids::add_gtid_owner	(	const Gtid &	gtid,
		my_thread_id	owner
	)

Add a GTID to this Owned_gtids.

Parameters

gtid	The Gtid to add.
owner	The my_thread_id of the group to add.

Returns: RETURN_STATUS_OK or RETURN_STATUS_REPORTED_ERROR.

Definition at line 82 of file rpl_gtid_owned.cc.

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void Owned_gtids::dbug_print ( const char * text = "" ) const

inline

Print this Owned_gtids to the trace file if debug is enabled; no-op otherwise.

Definition at line 1908 of file rpl_gtid.h.

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enum_return_status Owned_gtids::ensure_sidno ( rpl_sidno sidno )

Ensures that this Owned_gtids object can accomodate SIDNOs up to the given SIDNO.

If this Owned_gtids object needs to be resized, then the lock will be temporarily upgraded to a write lock and then degraded to a read lock again; there will be a short period when the lock is not held at all.

Parameters

sidno The SIDNO.

Returns: RETURN_STATUS_OK or RETURN_STATUS_REPORTED_ERROR.

Definition at line 55 of file rpl_gtid_owned.cc.

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size_t Owned_gtids::get_max_string_length ( ) const

inline

Return an upper bound on the length of the string representation of this Owned_groups. The actual length may be smaller. This includes the trailing '\0'.

Definition at line 1852 of file rpl_gtid.h.

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