TransactionProfiler Class Reference

Helper class that detects high-contention DB queries via profiling calls. More...

List of all members.

Public Member Functions
	recordFunctionCompletion ($method, $realtime)
	Register the name and time of a method for slow DB trx detection.
	transactionWritingIn ($server, $db, $id)
	Mark a DB as in a transaction with one or more writes pending.
	transactionWritingOut ($server, $db, $id)
	Mark a DB as no longer in a transaction.
Protected Attributes
float	$mDBLockThreshold = 3.0
	Seconds *.
	$mDBTrxHoldingLocks = array()
	$mDBTrxMethodTimes = array()

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Detailed Description

Helper class that detects high-contention DB queries via profiling calls.

This class is meant to work with a Profiler, as the later already knows when methods start and finish (which may take place during transactions).

Since:

1.24

Definition at line 372 of file Profiler.php.

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Member Function Documentation

TransactionProfiler::recordFunctionCompletion	(	$	method,
		$	realtime
	)

Register the name and time of a method for slow DB trx detection.

This method is only to be called by the Profiler class as methods finish

Parameters:

string	$method	Function name
float	$realtime	Wal time ellapsed

Definition at line 410 of file Profiler.php.

TransactionProfiler::transactionWritingIn	(	$	server,
		$	db,
		$	id
	)

Mark a DB as in a transaction with one or more writes pending.

Note that there can be multiple connections to a single DB.

Parameters:

string	$server	DB server
string	$db	DB name
string	$id	ID string of transaction

Definition at line 388 of file Profiler.php.

TransactionProfiler::transactionWritingOut	(	$	server,
		$	db,
		$	id
	)

Mark a DB as no longer in a transaction.

This will check if locks are possibly held for longer than needed and log any affected transactions to a special DB log. Note that there can be multiple connections to a single DB.

Parameters:

string	$server	DB server
string	$db	DB name
string	$id	ID string of transaction

Definition at line 439 of file Profiler.php.

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Member Data Documentation

float TransactionProfiler::$mDBLockThreshold = 3.0 [protected]

Seconds *.

Definition at line 373 of file Profiler.php.

TransactionProfiler::$mDBTrxHoldingLocks = array() [protected]

Definition at line 375 of file Profiler.php.

TransactionProfiler::$mDBTrxMethodTimes = array() [protected]

Definition at line 377 of file Profiler.php.

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

• includes/profiler/Profiler.php