org.omegahat.Environment.lib.Language
Class TimedEvaluation

java.lang.Object
  |
  +--org.omegahat.Environment.lib.Language.TimedEvaluation

Direct Known Subclasses:

TimedExpressionEvaluation

public class TimedEvaluation

extends java.lang.Object

Class used to time a particular computation, be in an interpreted expression or a regular Java call.

See Also:

TimedExpressionEvaluation

Field Summary

static int	START Symbolic constant identifying the position in the array of times identifying the starting time.
static int	STOP Symbolic constant identifying the position in the array of times identifying the finishing time.
protected long[]	times Array storing the starting and ending time.

Constructor Summary

TimedEvaluation()

Method Summary

long	duration() Method to compute the total amount of time taken.
java.lang.Object	eval(Evaluable expression, Evaluator evaluator) Evaluates the specified expression, noting the starting and stopping times in the times array.
long	getStart() Method to access the time the computation started.
long	getStop() Method to access the time the evaluation concluded.
long	start() Imperative indicating that the current time should be stored as the time the evaluation was complete.
long	stop() Imperative indicating that the current time should be stored as the time the evaluation was complete.
long[]	times() Accessor for the times array.
protected long[]	times(long[] t) Internal accessor for specifying the times array.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

START

public static int START

Symbolic constant identifying the position in the array of times identifying the starting time.

STOP

public static int STOP

Symbolic constant identifying the position in the array of times identifying the finishing time.

times

protected long[] times

Array storing the starting and ending time.

Constructor Detail

TimedEvaluation

public TimedEvaluation()

Method Detail

start

public long start()

Imperative indicating that the current time should be stored as the time the evaluation was complete.

stop

public long stop()

Imperative indicating that the current time should be stored as the time the evaluation was complete.

eval

public java.lang.Object eval(Evaluable expression,
                             Evaluator evaluator)
                      throws java.lang.Throwable

Evaluates the specified expression, noting the starting and stopping times in the times array. Even if an exception is throw, the time is still valid.

getStart

public long getStart()

Method to access the time the computation started.

getStop

public long getStop()

Method to access the time the evaluation concluded.

duration

public long duration()

Method to compute the total amount of time taken.

times

public long[] times()

Accessor for the times array.

times

protected long[] times(long[] t)

Internal accessor for specifying the times array.