avrora.sim.util
Class Counter

java.lang.Object
  avrora.sim.util.Counter

All Implemented Interfaces:

Simulator.Probe

public class Counter

extends java.lang.Object

implements Simulator.Probe

The Counter class is a utility for profiling programs. It simply increments an internal counter every time the probe fires. This very simple type of probe can be used for profiling counts of basic blocks, interrupt routines, particular methods, inner loops, or even to count the total number of instructions executed in the program.

Field Summary

long	count The count field stores the accumulation of all events received by this counter.

Constructor Summary

Counter()

Method Summary

void	fireAfter(Instr i, int address, State state) The fireAfter() method is called after the probed instruction executes.
void	fireBefore(Instr i, int address, State state) The fireBefore() method is called before the probed instruction executes.

Methods inherited from class java.lang.Object

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

Field Detail

count

public long count

The count field stores the accumulation of all events received by this counter. This field is incremented once each time the fireBefore() method is invoked.

Constructor Detail

Counter

public Counter()

Method Detail

fireBefore

public void fireBefore(Instr i,
                       int address,
                       State state)

The fireBefore() method is called before the probed instruction executes. In the implementation of the counter, it simply updates the internal counter.

Specified by:

fireBefore in interface Simulator.Probe

Parameters:

i - the instruction being probed

address - the address at which this instruction resides

state - the state of the simulation

fireAfter

public void fireAfter(Instr i,
                      int address,
                      State state)

The fireAfter() method is called after the probed instruction executes. In the implementation of the counter, it does nothing.

Specified by:

fireAfter in interface Simulator.Probe

Parameters:

i - the instruction being probed

address - the address at which this instruction resides

state - the state of the simulation