Wait_for_flush Class Reference

Class representing the fact that some thread waits for table share to be flushed. More...

#include <table.h>

Inheritance diagram for Wait_for_flush:

Public Member Functions
	Wait_for_flush (MDL_context *ctx_arg, TABLE_SHARE *share_arg, uint deadlock_weight_arg)
MDL_context *	get_ctx () const
bool	accept_visitor (MDL_wait_for_graph_visitor *dvisitor) override
	Traverse portion of wait-for graph which is reachable through edge represented by this flush ticket in search for deadlocks. More...
uint	get_deadlock_weight () const override
Public Member Functions inherited from MDL_wait_for_subgraph
virtual	~MDL_wait_for_subgraph ()

Public Attributes
Wait_for_flush *	next_in_share
	Pointers for participating in the list of waiters for table share. More...
Wait_for_flush **	prev_in_share

Private Attributes
MDL_context *	m_ctx
TABLE_SHARE *	m_share
uint	m_deadlock_weight

Additional Inherited Members
Static Public Attributes inherited from MDL_wait_for_subgraph
static const uint	DEADLOCK_WEIGHT_CO = 0
static const uint	DEADLOCK_WEIGHT_DML = 25
static const uint	DEADLOCK_WEIGHT_ULL = 50
static const uint	DEADLOCK_WEIGHT_DDL = 100

Detailed Description

Class representing the fact that some thread waits for table share to be flushed.

Is used to represent information about such waits in MDL deadlock detector.

Constructor & Destructor Documentation

Wait_for_flush()

Wait_for_flush::Wait_for_flush ( MDL_context *  ctx_arg, TABLE_SHARE *  share_arg, uint  deadlock_weight_arg  )

inline

Member Function Documentation

accept_visitor()

bool Wait_for_flush::accept_visitor ( MDL_wait_for_graph_visitor *  gvisitor )

overridevirtual

Traverse portion of wait-for graph which is reachable through edge represented by this flush ticket in search for deadlocks.

Return values

true	A deadlock is found. A victim is remembered by the visitor.
false	Success, no deadlocks.

Implements MDL_wait_for_subgraph.

get_ctx()

MDL_context * Wait_for_flush::get_ctx ( ) const

inline

get_deadlock_weight()

uint Wait_for_flush::get_deadlock_weight ( ) const

overridevirtual

Implements MDL_wait_for_subgraph.

Member Data Documentation

m_ctx

MDL_context* Wait_for_flush::m_ctx

private

m_deadlock_weight

uint Wait_for_flush::m_deadlock_weight

private

m_share

TABLE_SHARE* Wait_for_flush::m_share

private

next_in_share

Wait_for_flush* Wait_for_flush::next_in_share

Pointers for participating in the list of waiters for table share.

prev_in_share

Wait_for_flush** Wait_for_flush::prev_in_share

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

• sql/table.h
• sql/table.cc