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/includes/filebackend/lockmanager/ -> DBLockManager.php (summary)

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Version of LockManager based on using DB table locks. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

File Size: 438 lines (14 kb)
Included or required:0 times
Referenced: 0 times
Includes or requires: 0 files

Defines 2 classes

MySqlLockManager:: (3 methods):
  initConnection()
  doGetLocksOnServer()
  releaseAllLocks()

PostgreSqlLockManager:: (2 methods):
  doGetLocksOnServer()
  releaseAllLocks()

Defines 2 functions

  __construct()
  getLocksOnServer()
  freeLocksOnServer()
  isServerUp()
  getConnection()
  initConnection()
  cacheCheckFailures()
  cacheRecordFailure()
  getMissKey()
  __destruct()

Class: MySqlLockManager  - X-Ref

MySQL version of DBLockManager that supports shared locks.
All locks are non-blocking, which avoids deadlocks.

initConnection( $lockDb, DatabaseBase $db )   X-Ref

param: string $lockDb
param: DatabaseBase $db

doGetLocksOnServer( $lockSrv, array $paths, $type )   X-Ref
Get a connection to a lock DB and acquire locks on $paths.
This does not use GET_LOCK() per http://bugs.mysql.com/bug.php?id=1118.

param: string $lockSrv
param: array $paths
param: string $type
return: Status

releaseAllLocks()   X-Ref

return: Status

Class: PostgreSqlLockManager  - X-Ref

PostgreSQL version of DBLockManager that supports shared locks.
All locks are non-blocking, which avoids deadlocks.

doGetLocksOnServer( $lockSrv, array $paths, $type )   X-Ref
No description

releaseAllLocks()   X-Ref
No description

Functions
Functions that are not part of a class:

__construct( array $config )   X-Ref
Construct a new instance from configuration.

param: array $config Paramaters include:

getLocksOnServer( $lockSrv, array $pathsByType )   X-Ref
No description

freeLocksOnServer( $lockSrv, array $pathsByType )   X-Ref
No description

isServerUp( $lockSrv )   X-Ref

param: string $lockSrv
return: bool

getConnection( $lockDb )   X-Ref
Get (or reuse) a connection to a lock DB

param: string $lockDb
return: DatabaseBase

initConnection( $lockDb, DatabaseBase $db )   X-Ref
Do additional initialization for new lock DB connection

param: string $lockDb
param: DatabaseBase $db

cacheCheckFailures( $lockDb )   X-Ref
Checks if the DB has not recently had connection/query errors.
This just avoids wasting time on doomed connection attempts.

param: string $lockDb
return: bool

cacheRecordFailure( $lockDb )   X-Ref
Log a lock request failure to the cache

param: string $lockDb
return: bool Success

getMissKey( $lockDb )   X-Ref
Get a cache key for recent query misses for a DB

param: string $lockDb
return: string

__destruct()   X-Ref
Make sure remaining locks get cleared for sanity



Generated: Fri Nov 28 14:03:12 2014 Cross-referenced by PHPXref 0.7.1