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/*
* Copyright (c) 2012, Red Hat.
* Copyright (c) 2012, Nathan Scott. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#ifndef TRACING_H
#define TRACING_H
#include "chart.h"
#include <qvector.h>
#include <qwt_plot.h>
#include <qwt_scale_draw.h>
#include <qwt_scale_engine.h>
#include <qwt_interval_symbol.h>
#include <qwt_plot_intervalcurve.h>
class TracingEvent
{
public:
TracingEvent() { }
TracingEvent(QmcEventRecord const &, pmID, int);
bool operator<(TracingEvent const& rhs) // for sorting
{ return my.timestamp < rhs.timestamp(); }
virtual ~TracingEvent();
double timestamp(void) const { return my.timestamp; }
int missed(void) const { return my.missed; }
bool hasIdentifier(void) const { return my.flags & PM_EVENT_FLAG_ID; }
bool hasParent(void) const { return my.flags & PM_EVENT_FLAG_PARENT; }
bool hasStartFlag(void) const { return my.flags & PM_EVENT_FLAG_START; }
bool hasEndFlag(void) const { return my.flags & PM_EVENT_FLAG_END; }
const QString &spanID(void) const { return my.spanID; }
const QString &rootID(void) const { return my.rootID; }
const QString &description(void) const { return my.description; }
private:
struct {
double timestamp; // from PMDA
int missed; // from PMDA
int flags; // from PMDA
pmID pmid; // metric
int inst; // instance
QString spanID; // identifier
QString rootID; // parent ID
QString description; // parameters, etc
} my;
};
class TracingItem : public ChartItem
{
public:
TracingItem() : ChartItem() { }
TracingItem(Chart *, QmcMetric *, pmMetricSpec *, pmDesc *, const QString &);
virtual ~TracingItem();
QwtPlotItem *item();
QwtPlotCurve *curve();
void preserveSample(int, int) { }
void punchoutSample(int) { }
void resetValues(int, double, double);
void updateValues(TracingEngine *, double, double);
void rescaleValues(double *, double *);
void clearCursor(void);
bool containsPoint(const QRectF &, int);
void updateCursor(const QPointF &, int);
const QString &cursorInfo();
void setStroke(Chart::Style, QColor, bool);
void revive(void);
void remove(void);
void redraw(void);
private:
void cullOutlyingDrops(double, double);
void cullOutlyingSpans(double, double);
void cullOutlyingPoints(double, double);
void cullOutlyingEvents(double, double);
void updateEvents(TracingEngine *, QmcMetric *);
void updateEventRecords(TracingEngine *, QmcMetric *, int);
void addTraceSpan(TracingEngine *, const QString &, int);
void showEventInfo(bool, int);
struct {
QVector<TracingEvent> events; // all events, raw data
QVector<QPointF> selections; // time series of selected points
QString selectionInfo;
QVector<QPointF> points; // displayed trace data (point form)
ChartCurve *pointCurve;
QwtSymbol *pointSymbol;
QVector<QPointF> selectionPoints; // displayed user-selected trace points
QwtPlotCurve *selectionCurve;
QwtSymbol *selectionSymbol;
QVector<QwtIntervalSample> spans; // displayed trace data (horizontal span)
QwtPlotIntervalCurve *spanCurve;
QwtIntervalSymbol *spanSymbol;
QVector<QwtIntervalSample> drops; // displayed trace data (vertical drop)
QwtPlotIntervalCurve *dropCurve;
QwtIntervalSymbol *dropSymbol;
double minSpanID;
double maxSpanID;
double minSpanTime;
double maxSpanTime;
Chart *chart;
} my;
};
//
// Handles updates to the Y-Axis
//
class TracingScaleEngine : public QwtLinearScaleEngine
{
public:
TracingScaleEngine(TracingEngine *engine);
virtual void autoScale(int maxSteps, double &minValue,
double &maxValue, double &stepSize) const;
virtual QwtScaleDiv divideScale(double x1, double x2,
int numMajorSteps, int numMinorSteps, double stepSize = 0.0) const;
void getScale(double *minSpanID, double *maxSpanID);
void setScale(double minSpanID, double maxSpanID);
bool updateScale(double minSpanID, double maxSpanID);
private:
struct {
double minSpanID;
double maxSpanID;
TracingEngine *engine;
} my;
};
//
// Implements a mapping from span identifier to span name
// for updating the Y-Axis display.
//
class TracingScaleDraw : public QwtScaleDraw
{
public:
TracingScaleDraw(TracingEngine *engine) : QwtScaleDraw() { my.engine = engine; }
virtual QwtText label(double v) const;
virtual void getBorderDistHint(const QFont &f, int &start, int &end) const;
void invalidate() { invalidateCache(); }
private:
struct {
TracingEngine *engine;
} my;
};
//
// Implement tracing-specific behaviour within a Chart
//
class TracingEngine : public ChartEngine
{
friend class Chart;
public:
TracingEngine(Chart *);
bool isCompatible(pmDesc &);
ChartItem *addItem(QmcMetric *, pmMetricSpec *, pmDesc *, const QString &);
void updateValues(bool, int, int, double, double, double);
void redoScale(void);
void setScale(bool, double, double);
void scale(bool *, double *, double *);
void setStyle(Chart::Style);
void addTraceSpan(const QString &, int);
int getTraceSpan(const QString &, int) const;
QString getSpanLabel(int) const;
void selected(const QPolygon &);
void replot(void);
private:
TracingItem *tracingItem(int index);
struct {
QHash<QString, int> traceSpanMapping; // map, event ID to y-axis point
QHash<int, QString> labelSpanMapping; // reverse -> y-axis point to ID
TracingScaleEngine *scaleEngine;
TracingScaleDraw *scaleDraw; // convert ints to spanID
Chart *chart;
} my;
};
#endif // TRACING_H
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