Inheritance diagram for MDL_object_lock:

Collaboration diagram for MDL_object_lock:

Public Member Functions
	MDL_object_lock (const MDL_key key_arg, MDL_map_partition map_part)
void	reset (const MDL_key *new_key)
virtual const bitmap_t *	incompatible_granted_types_bitmap () const
virtual const bitmap_t *	incompatible_waiting_types_bitmap () const
virtual bool	needs_notification (const MDL_ticket *ticket) const
virtual void	notify_conflicting_locks (MDL_context *ctx)
virtual bitmap_t	hog_lock_types_bitmap () const
Public Member Functions inherited from MDL_lock
bool	is_empty () const
bool	has_pending_conflicting_lock (enum_mdl_type type)
bool	can_grant_lock (enum_mdl_type type, MDL_context *requstor_ctx, bool ignore_lock_priority) const
void	reschedule_waiters ()
void	remove_ticket (Ticket_list MDL_lock::queue, MDL_ticket ticket)
bool	visit_subgraph (MDL_ticket waiting_ticket, MDL_wait_for_graph_visitor gvisitor)
	MDL_lock (const MDL_key key_arg, MDL_map_partition map_part)

Public Attributes
MDL_object_lock *	next_in_cache
MDL_object_lock **	prev_in_cache
Public Attributes inherited from MDL_lock
MDL_key	key
mysql_prlock_t	m_rwlock
Ticket_list	m_granted
Ticket_list	m_waiting
ulong	m_hog_lock_count
uint	m_ref_usage
uint	m_ref_release
bool	m_is_destroyed
ulonglong	m_version
MDL_map_partition *	m_map_part

Additional Inherited Members
Public Types inherited from MDL_lock
typedef unsigned short	bitmap_t
typedef Ticket_list::List::Iterator	Ticket_iterator
Static Public Member Functions inherited from MDL_lock
static MDL_lock *	create (const MDL_key key, MDL_map_partition map_part)
static void	destroy (MDL_lock *lock)

Detailed Description

An implementation of a per-object lock. Supports SHARED, SHARED_UPGRADABLE, SHARED HIGH PRIORITY and EXCLUSIVE locks.

Definition at line 569 of file mdl.cc.

Member Function Documentation

void MDL_object_lock::notify_conflicting_locks ( MDL_context * ctx )

virtual

Notify threads holding a shared metadata locks on object which conflict with a pending X, SNW or SNRW lock.

Parameters

ctx	MDL_context for current thread.

Implements MDL_lock.

Definition at line 2091 of file mdl.cc.

void MDL_object_lock::reset ( const MDL_key * new_key )

inline

Reset unused MDL_object_lock object to represent the lock context for a different object.

Definition at line 580 of file mdl.cc.

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MDL_object_lock* MDL_object_lock::next_in_cache

Members for linking the object into the list of unused objects.

Definition at line 628 of file mdl.cc.

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