avrora.sim.util
Class ProgramProfiler

java.lang.Object
  avrora.sim.Simulator.Probe.Empty
      avrora.sim.util.ProgramProfiler

All Implemented Interfaces:

Simulator.Probe

public class ProgramProfiler

extends Simulator.Probe.Empty

The ProgramProfiler class implements a probe that can be used to profile pieces of the program or the whole program. It maintains a simple array of long that stores the count for every instruction.

See Also:

Counter

Nested Class Summary

Nested classes inherited from class avrora.sim.Simulator.Probe

Simulator.Probe.Empty

Field Summary

long[]	icount The itime field stores the invocation count for each instruction in the program.
Program	program The program field stores a reference to the program being profiled.

Constructor Summary

ProgramProfiler(Program p)
The constructor for the program profiler constructs the required internal state to store the invocation counts of each instruction.

Method Summary

void	fireBefore(State state, int pc) The fireBefore() method is called before the probed instruction executes.

Methods inherited from class avrora.sim.Simulator.Probe.Empty

fireAfter

Methods inherited from class java.lang.Object

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

Field Detail

program

public final Program program

The program field stores a reference to the program being profiled.

icount

public final long[] icount

The itime field stores the invocation count for each instruction in the program. It is indexed by byte addresses. Thus itime[addr] corresponds to the invocation for the instruction at program.getInstr(addr).

Constructor Detail

ProgramProfiler

public ProgramProfiler(Program p)

The constructor for the program profiler constructs the required internal state to store the invocation counts of each instruction.

Parameters:

p - the program to profile

Method Detail

fireBefore

public void fireBefore(State state,
                       int pc)

The fireBefore() method is called before the probed instruction executes. In the implementation of the program profiler, it simply increments the count of the instruction at the specified address.

Specified by:

fireBefore in interface Simulator.Probe

Overrides:

fireBefore in class Simulator.Probe.Empty

Parameters:

state - the state of the simulation

pc - the address at which this instruction resides