MDL_map Class Reference

List of all members.

Public Member Functions
void	init ()
void	destroy ()
MDL_lock *	find_or_insert (const MDL_key *key)
void	remove (MDL_lock *lock)

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Detailed Description

A collection of all MDL locks. A singleton, there is only one instance of the map in the server. Contains instances of MDL_map_partition

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Member Function Documentation

void MDL_map::destroy

(

)

Destroy the container for all MDL locks.

Precondition:

It must be empty.

MDL_lock * MDL_map::find_or_insert

(

const MDL_key *

mdl_key

)

Find MDL_lock object corresponding to the key, create it if it does not exist.

Return values:

non-NULL	- Success. MDL_lock instance for the key with locked MDL_lock::m_rwlock.
NULL	- Failure (OOM).

void MDL_map::init

(

)

Initialize the container for all MDL locks.

void MDL_map::remove

(

MDL_lock *

lock

)

Destroy MDL_lock object or delegate this responsibility to whatever thread that holds the last outstanding reference to it.

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

• mdl.cc