#include <rpl_gtid.h>

Public Types
enum	enum_add_group_status { EXTEND_EXISTING_GROUP, APPEND_NEW_GROUP, ERROR }

Public Member Functions
	Group_cache ()
	Constructs a new Group_cache.
	~Group_cache ()
	Deletes a Group_cache.
void	clear ()
	Removes all groups from this cache.
int	get_n_groups () const
	Return the number of groups in this group cache.
bool	is_empty () const
	Return true iff the group cache contains zero groups.
enum_add_group_status	add_logged_group (const THD *thd, my_off_t binlog_offset)
enum_return_status	write_to_gtid_state () const
enum_return_status	generate_automatic_gno (THD *thd)
bool	contains_gtid (const Gtid &gtid) const
enum_return_status	get_gtids (Gtid_set *gs) const
size_t	to_string (const Sid_map sm, char buf) const
size_t	get_max_string_length () const
char *	to_string (const Sid_map *sm) const
void	print (const Sid_map *sm) const
	Debug only: print this Group_cache to stdout.
void	dbug_print (const Sid_map sid_map, const char text="") const
Cached_group *	get_unsafe_pointer (int index) const

Detailed Description

Represents a group cache: either the statement group cache or the transaction group cache.

Definition at line 2500 of file rpl_gtid.h.

Member Enumeration Documentation

enum Group_cache::enum_add_group_status

Adds a group to this Group_cache. The group should already have been written to the stmt or trx cache. The SIDNO and GNO fields are taken from @SESSION.GTID_NEXT.

Parameters

thd	The THD object from which we read session variables.
binlog_length	Length of group in binary log.

Return values

EXTEND_EXISTING_GROUP	The last existing group had the same GTID and has been extended to include this group too.
APPEND_NEW_GROUP	The group has been appended to this cache.
ERROR	An error (out of memory) occurred. The error has been reported.

Definition at line 2526 of file rpl_gtid.h.

Member Function Documentation

bool Group_cache::contains_gtid ( const Gtid & gtid ) const

Return true if this Group_cache contains the given GTID.

Parameters

gtid	The Gtid to check.

Return values

true	The group exists in this cache.
false	The group does not exist in this cache.

Definition at line 78 of file rpl_gtid_cache.cc.

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void Group_cache::dbug_print	(	const Sid_map *	sid_map,
		const char *	text = `""`
	)		const

inline

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

Definition at line 2639 of file rpl_gtid.h.

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enum_return_status Group_cache::generate_automatic_gno ( THD * thd )

Generates GNO for all groups that are committed for the first time in this Group_cache.

This acquires ownership of all groups. After this call, this Group_cache does not contain any Cached_groups that have type==GTID_GROUP and gno<=0.

Parameters

thd	The THD that this Gtid_state belongs to.

Returns: RETURN_STATUS_OK or RETURN_STATUS_REPORTED_ERROR

Definition at line 128 of file rpl_gtid_cache.cc.

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enum_return_status Group_cache::get_gtids ( Gtid_set * gs ) const

Add all GTIDs that exist in this Group_cache to the given Gtid_set.

Parameters

gs	The Gtid_set to which groups are added.

Returns: RETURN_STATUS_OK or RETURN_STATUS_REPORTED_ERROR.

Definition at line 171 of file rpl_gtid_cache.cc.

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size_t Group_cache::get_max_string_length ( ) const

inline

Debug only: return an upper bound on the length of the string generated by to_string(). The actual length may be shorter.

Definition at line 2610 of file rpl_gtid.h.

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Cached_group* Group_cache::get_unsafe_pointer ( int index ) const

inline

Returns a pointer to the given group. The pointer is only valid until the next time a group is added or removed.

Parameters

index Index of the element: 0 <= index < get_n_groups().

Definition at line 2654 of file rpl_gtid.h.

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size_t Group_cache::to_string	(	const Sid_map *	sm,
		char *	buf
	)		const

inline

Debug only: store a textual representation of this Group_cache in the given buffer and return the length.

Definition at line 2584 of file rpl_gtid.h.

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char* Group_cache::to_string ( const Sid_map * sm ) const

inline

Debug only: generate a textual representation of this Group_cache and store in a newly allocated string. Return the string, or NULL on out of memory.

Definition at line 2620 of file rpl_gtid.h.

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enum_return_status Group_cache::write_to_gtid_state ( ) const

Write all gtids in this cache to the global Gtid_state.

Returns: RETURN_STATUS_OK or RETURN_STATUS_REPORTED_ERROR.

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

sql/rpl_gtid.h
sql/rpl_gtid_cache.cc

Public Types

Public Member Functions

Detailed Description

Member Enumeration Documentation

Member Function Documentation