BusTracker Class Reference

#include <BusTracker.hh>

Inheritance diagram for BusTracker:

Collaboration diagram for BusTracker:

Public Member Functions
	BusTracker (SimulatorFrontend &frontend, std::ostream *traceStream)
	BusTracker (SimulatorFrontend &frontend, std::ostream &traceStream)
virtual	~BusTracker ()
virtual void	handleEvent ()
Public Member Functions inherited from Listener
	Listener ()
virtual	~Listener ()
virtual void	handleEvent (int event)

Private Attributes
SimulatorFrontend &	frontend_
	the simulator frontend used to access simulation data More...
bool	ownsTraceStream_
std::ostream *	traceStream_

Static Private Attributes
static const int	COLUMN_WIDTH
static const std::string	COLUMN_SEPARATOR = ","

Detailed Description

Tracks the bus activity.

Stores bus data as hexadecimal numbers in a bus trace file in CSV format.

Definition at line 53 of file BusTracker.hh.

Constructor & Destructor Documentation

BusTracker() [1/2]

BusTracker::BusTracker	(	SimulatorFrontend &	frontend,
		std::ostream *	traceStream
	)

Constructor.

Parameters

frontend	The SimulationFrontend which is used to access simulation data.
traceStream	Output stream where the trace data is written to. Takes ownership of the stream.

Definition at line 63 of file BusTracker.cc.

                             :
    Listener(), frontend_(frontend),ownsTraceStream_(true),
    traceStream_(traceStream) {
    // write the trace data at the end of simulation clock cycle
    frontend.eventHandler().registerListener(
        SimulationEventHandler::SE_CYCLE_END, this);
}

References SimulatorFrontend::eventHandler(), Informer::registerListener(), and SimulationEventHandler::SE_CYCLE_END.

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BusTracker() [2/2]

BusTracker::BusTracker	(	SimulatorFrontend &	frontend,
		std::ostream &	traceStream
	)

Constructor.

Parameters

frontend	The SimulationFrontend which is used to access simulation data.
traceStream	Output stream where the trace data is written to.

Definition at line 80 of file BusTracker.cc.

    : Listener(), frontend_(frontend),ownsTraceStream_(false),
      traceStream_(&traceStream) {
    frontend.eventHandler().registerListener(
            SimulationEventHandler::SE_CYCLE_END, this);
}

References SimulatorFrontend::eventHandler(), Informer::registerListener(), and SimulationEventHandler::SE_CYCLE_END.

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~BusTracker()

BusTracker::~BusTracker ( )

virtual

Destructor.

Definition at line 92 of file BusTracker.cc.

                        {
    frontend_.eventHandler().unregisterListener(
        SimulationEventHandler::SE_CYCLE_END, this);
    traceStream_->flush();
    if (ownsTraceStream_) {
        delete traceStream_;
    }
}

References SimulatorFrontend::eventHandler(), frontend_, ownsTraceStream_, SimulationEventHandler::SE_CYCLE_END, traceStream_, and Informer::unregisterListener().

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Member Function Documentation

handleEvent()

void BusTracker::handleEvent ( )

virtual

Writes bus trace data to the trace stream.

If any error happens while writing the data, aborts program with an error message.

Reimplemented from Listener.

Definition at line 108 of file BusTracker.cc.

                        {
 
    TTAMachine::Machine::BusNavigator navigator =
        frontend_.machine().busNavigator();
 
    *traceStream_ << frontend_.cycleCount();
 
    for (int i = 0; i < navigator.count(); ++i) {
        const std::string busName = navigator.item(i)->name();
 
        BusState& bus = frontend_.machineState(0).busState(busName);
        int columnWidth = (bus.width()+3)/4;
 
        *traceStream_ << COLUMN_SEPARATOR;
        if (!bus.isSquashed()) {
            *traceStream_ << bus.value().hexValue(true);
        } else {
            // Squashed values are displayed as zeros.
            *traceStream_ << std::string(columnWidth, '0');
        }
    }
    *traceStream_ << "\n";
}

References TTAMachine::Machine::busNavigator(), MachineState::busState(), COLUMN_SEPARATOR, TTAMachine::Machine::Navigator< ComponentType >::count(), SimulatorFrontend::cycleCount(), frontend_, SimValue::hexValue(), BusState::isSquashed(), TTAMachine::Machine::Navigator< ComponentType >::item(), SimulatorFrontend::machine(), SimulatorFrontend::machineState(), traceStream_, RegisterState::value(), and BusState::width().

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Member Data Documentation

COLUMN_SEPARATOR

const std::string BusTracker::COLUMN_SEPARATOR = ","

staticprivate

Definition at line 67 of file BusTracker.hh.

Referenced by handleEvent().

COLUMN_WIDTH

const int BusTracker::COLUMN_WIDTH

staticprivate

Definition at line 66 of file BusTracker.hh.

frontend_

SimulatorFrontend& BusTracker::frontend_

private

the simulator frontend used to access simulation data

Definition at line 69 of file BusTracker.hh.

Referenced by handleEvent(), and ~BusTracker().

ownsTraceStream_

bool BusTracker::ownsTraceStream_

private

Definition at line 70 of file BusTracker.hh.

Referenced by ~BusTracker().

traceStream_

std::ostream* BusTracker::traceStream_

private

Definition at line 71 of file BusTracker.hh.

Referenced by handleEvent(), and ~BusTracker().

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

• BusTracker.hh
• BusTracker.cc