From patchwork Fri Oct 12 16:13:14 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yordan Karadzhov X-Patchwork-Id: 10759551 Return-Path: Received: from mail-eopbgr680056.outbound.protection.outlook.com ([40.107.68.56]:3297 "EHLO NAM04-BN3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728989AbeJLXr2 (ORCPT ); Fri, 12 Oct 2018 19:47:28 -0400 From: Yordan Karadzhov To: rostedt@goodmis.org Cc: linux-trace-devel@vger.kernel.org, Yordan Karadzhov Subject: [PATCH 06/10] kernel-shark-qt: Add Trace Graph widget. Date: Fri, 12 Oct 2018 19:13:14 +0300 Message-Id: <20181012161318.5302-7-ykaradzhov@vmware.com> In-Reply-To: <20181012161318.5302-1-ykaradzhov@vmware.com> References: <20181012161318.5302-1-ykaradzhov@vmware.com> MIME-Version: 1.0 Sender: linux-trace-devel-owner@vger.kernel.org List-ID: Content-Length: 23253 From: Yordan Karadzhov (VMware) This patch defines widget for interactive visualization of trace data shown as time-series. The provides an info panel and a graph plotting area (KsGLWidget). The panel and the plotting area are integrated with the Dual Marker. Signed-off-by: Yordan Karadzhov (VMware) --- kernel-shark-qt/src/CMakeLists.txt | 2 + kernel-shark-qt/src/KsTraceGraph.cpp | 690 +++++++++++++++++++++++++++ kernel-shark-qt/src/KsTraceGraph.hpp | 137 ++++++ 3 files changed, 829 insertions(+) create mode 100644 kernel-shark-qt/src/KsTraceGraph.cpp create mode 100644 kernel-shark-qt/src/KsTraceGraph.hpp diff --git a/kernel-shark-qt/src/CMakeLists.txt b/kernel-shark-qt/src/CMakeLists.txt index 2ca5187..d406866 100644 --- a/kernel-shark-qt/src/CMakeLists.txt +++ b/kernel-shark-qt/src/CMakeLists.txt @@ -36,6 +36,7 @@ if (Qt5Widgets_FOUND AND Qt5Network_FOUND) KsGLWidget.hpp KsDualMarker.hpp KsWidgetsLib.hpp + KsTraceGraph.hpp KsTraceViewer.hpp) QT5_WRAP_CPP(ks-guiLib_hdr_moc ${ks-guiLib_hdr}) @@ -45,6 +46,7 @@ if (Qt5Widgets_FOUND AND Qt5Network_FOUND) KsGLWidget.cpp KsDualMarker.cpp KsWidgetsLib.cpp + KsTraceGraph.cpp KsTraceViewer.cpp) target_link_libraries(kshark-gui kshark-plot diff --git a/kernel-shark-qt/src/KsTraceGraph.cpp b/kernel-shark-qt/src/KsTraceGraph.cpp new file mode 100644 index 0000000..6994644 --- /dev/null +++ b/kernel-shark-qt/src/KsTraceGraph.cpp @@ -0,0 +1,690 @@ +// SPDX-License-Identifier: LGPL-2.1 + +/* + * Copyright (C) 2017 VMware Inc, Yordan Karadzhov + */ + +/** + * @file KsTraceGraph.cpp + * @brief KernelShark Trace Graph. + */ + +// KernelShark +#include "KsUtils.hpp" +#include "KsDualMarker.hpp" +#include "KsTraceGraph.hpp" + +/** Create a default (empty) Trace graph widget. */ +KsTraceGraph::KsTraceGraph(QWidget *parent) +: QWidget(parent), + _pointerBar(this), + _navigationBar(this), + _zoomInButton("+", this), + _quickZoomInButton("++", this), + _zoomOutButton("-", this), + _quickZoomOutButton("- -", this), + _scrollLeftButton("<", this), + _scrollRightButton(">", this), + _labelP1("Pointer: ", this), + _labelP2("", this), + _labelI1("", this), + _labelI2("", this), + _labelI3("", this), + _labelI4("", this), + _labelI5("", this), + _scrollArea(this), + _drawWindow(&_scrollArea), + _legendWindow(&_drawWindow), + _legendAxisX(&_drawWindow), + _labelXMin("", &_legendAxisX), + _labelXMid("", &_legendAxisX), + _labelXMax("", &_legendAxisX), + _glWindow(&_drawWindow), + _mState(nullptr), + _data(nullptr), + _keyPressed(false) +{ + auto lamMakeNavButton = [&](QPushButton *b) { + b->setMaximumWidth(FONT_WIDTH * 5); + + connect(b, &QPushButton::released, + this, &KsTraceGraph::_stopUpdating); + _navigationBar.addWidget(b); + }; + + _pointerBar.setMaximumHeight(FONT_HEIGHT * 1.75); + _pointerBar.setOrientation(Qt::Horizontal); + + _navigationBar.setMaximumHeight(FONT_HEIGHT * 1.75); + _navigationBar.setMinimumWidth(FONT_WIDTH * 90); + _navigationBar.setOrientation(Qt::Horizontal); + + _pointerBar.addWidget(&_labelP1); + _labelP2.setFrameStyle(QFrame::Panel | QFrame::Sunken); + _labelP2.setStyleSheet("QLabel { background-color : white;}"); + _labelP2.setTextInteractionFlags(Qt::TextSelectableByMouse); + _labelP2.setFixedWidth(FONT_WIDTH * 16); + _pointerBar.addWidget(&_labelP2); + _pointerBar.addSeparator(); + + _labelI1.setStyleSheet("QLabel {color : blue;}"); + _labelI2.setStyleSheet("QLabel {color : green;}"); + _labelI3.setStyleSheet("QLabel {color : red;}"); + _labelI4.setStyleSheet("QLabel {color : blue;}"); + _labelI5.setStyleSheet("QLabel {color : green;}"); + + _pointerBar.addWidget(&_labelI1); + _pointerBar.addSeparator(); + _pointerBar.addWidget(&_labelI2); + _pointerBar.addSeparator(); + _pointerBar.addWidget(&_labelI3); + _pointerBar.addSeparator(); + _pointerBar.addWidget(&_labelI4); + _pointerBar.addSeparator(); + _pointerBar.addWidget(&_labelI5); + + _legendAxisX.setFixedHeight(FONT_HEIGHT * 1.5); + _legendAxisX.setLayout(new QHBoxLayout); + _legendAxisX.layout()->setSpacing(0); + _legendAxisX.layout()->setContentsMargins(0, 0, FONT_WIDTH, 0); + + _labelXMin.setAlignment(Qt::AlignLeft); + _labelXMid.setAlignment(Qt::AlignHCenter); + _labelXMax.setAlignment(Qt::AlignRight); + + _legendAxisX.layout()->addWidget(&_labelXMin); + _legendAxisX.layout()->addWidget(&_labelXMid); + _legendAxisX.layout()->addWidget(&_labelXMax); + _drawWindow.setMinimumSize(100, 100); + _drawWindow.setStyleSheet("QWidget {background-color : white;}"); + + _drawLayout.setContentsMargins(0, 0, 0, 0); + _drawLayout.setSpacing(0); + _drawLayout.addWidget(&_legendAxisX, 0, 1); + _drawLayout.addWidget(&_legendWindow, 1, 0); + _drawLayout.addWidget(&_glWindow, 1, 1); + _drawWindow.setLayout(&_drawLayout); + + _drawWindow.installEventFilter(this); + + connect(&_glWindow, &KsGLWidget::select, + this, &KsTraceGraph::markEntry); + + connect(&_glWindow, &KsGLWidget::found, + this, &KsTraceGraph::_setPointerInfo); + + connect(&_glWindow, &KsGLWidget::notFound, + this, &KsTraceGraph::_resetPointer); + + connect(&_glWindow, &KsGLWidget::zoomIn, + this, &KsTraceGraph::_zoomIn); + + connect(&_glWindow, &KsGLWidget::zoomOut, + this, &KsTraceGraph::_zoomOut); + + connect(&_glWindow, &KsGLWidget::scrollLeft, + this, &KsTraceGraph::_scrollLeft); + + connect(&_glWindow, &KsGLWidget::scrollRight, + this, &KsTraceGraph::_scrollRight); + + connect(&_glWindow, &KsGLWidget::stopUpdating, + this, &KsTraceGraph::_stopUpdating); + + connect(_glWindow.model(), &KsGraphModel::modelReset, + this, &KsTraceGraph::_updateTimeLegends); + + _scrollArea.setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); + _scrollArea.setWidget(&_drawWindow); + + lamMakeNavButton(&_scrollLeftButton); + connect(&_scrollLeftButton, &QPushButton::pressed, + this, &KsTraceGraph::_scrollLeft); + + lamMakeNavButton(&_zoomInButton); + connect(&_zoomInButton, &QPushButton::pressed, + this, &KsTraceGraph::_zoomIn); + + lamMakeNavButton(&_zoomOutButton); + connect(&_zoomOutButton, &QPushButton::pressed, + this, &KsTraceGraph::_zoomOut); + + lamMakeNavButton(&_scrollRightButton); + connect(&_scrollRightButton, &QPushButton::pressed, + this, &KsTraceGraph::_scrollRight); + + _navigationBar.addSeparator(); + + lamMakeNavButton(&_quickZoomInButton); + connect(&_quickZoomInButton, &QPushButton::pressed, + this, &KsTraceGraph::_quickZoomIn); + + lamMakeNavButton(&_quickZoomOutButton); + connect(&_quickZoomOutButton, &QPushButton::pressed, + this, &KsTraceGraph::_quickZoomOut); + + _layout.addWidget(&_pointerBar); + _layout.addWidget(&_navigationBar); + _layout.addWidget(&_scrollArea); + this->setLayout(&_layout); + updateGeom(); +} + +/** + * @brief Load and show trace data. + * + * @param data: Input location for the KsDataStore object. + * KsDataStore::loadDataFile() must be called first. + */ +void KsTraceGraph::loadData(KsDataStore *data) +{ + _data = data; + _glWindow.loadData(data); + _updateGraphLegends(); + updateGeom(); +} + +/** Connect the KsGLWidget widget and the State machine of the Dual marker. */ +void KsTraceGraph::setMarkerSM(KsDualMarkerSM *m) +{ + _mState = m; + _navigationBar.addSeparator(); + _mState->placeInToolBar(&_navigationBar); + _glWindow.setMarkerSM(m); +} + +/** Reset (empty) the widget. */ +void KsTraceGraph::reset() +{ + /* Clear the all graph lists and update. */ + _glWindow._cpuList = {}; + _glWindow._taskList = {}; + + _labelP2.setText(""); + for (auto l1: {&_labelI1, &_labelI2, &_labelI3, &_labelI4, &_labelI5}) + l1->setText(""); + + _glWindow.model()->reset(); + _selfUpdate(); + for (auto l2: {&_labelXMin, &_labelXMid, &_labelXMax}) + l2->setText(""); +} + +void KsTraceGraph::_selfUpdate() +{ + _updateGraphLegends(); + _updateTimeLegends(); + _markerReDraw(); + updateGeom(); +} + +void KsTraceGraph::_zoomIn() +{ + _updateGraphs(GraphActions::ZoomIn); +} + +void KsTraceGraph::_zoomOut() +{ + _updateGraphs(GraphActions::ZoomOut); +} + +void KsTraceGraph::_quickZoomIn() +{ + /* Bin size will be 100 ns. */ + _glWindow.model()->quickZoomIn(100); + if (_mState->activeMarker()._isSet && + _mState->activeMarker().isVisible()) { + /* + * Use the position of the active marker as + * a focus point of the zoom. + */ + uint64_t ts = _mState->activeMarker()._ts; + _glWindow.model()->jumpTo(ts); + } +} + +void KsTraceGraph::_quickZoomOut() +{ + _glWindow.model()->quickZoomOut(); +} + +void KsTraceGraph::_scrollLeft() +{ + _updateGraphs(GraphActions::ScrollLeft); +} + +void KsTraceGraph::_scrollRight() +{ + _updateGraphs(GraphActions::ScrollRight); +} + +void KsTraceGraph::_stopUpdating() +{ + /* + * The user is no longer pressing the action button. Reset the + * "Key Pressed" flag. This will stop the ongoing user action. + */ + _keyPressed = false; +} + +void KsTraceGraph::_resetPointer(uint64_t ts, int cpu, int pid) +{ + uint64_t sec, usec; + QString pointer; + + kshark_convert_nano(ts, &sec, &usec); + pointer.sprintf("%lu.%lu", sec, usec); + _labelP2.setText(pointer); + + if (pid > 0 && cpu >= 0) { + struct kshark_context *kshark_ctx(NULL); + + if (!kshark_instance(&kshark_ctx)) + return; + + QString comm(tep_data_comm_from_pid(kshark_ctx->pevent, pid)); + comm.append("-"); + comm.append(QString("%1").arg(pid)); + _labelI1.setText(comm); + _labelI2.setText(QString("CPU %1").arg(cpu)); + } else { + _labelI1.setText(""); + _labelI2.setText(""); + } + + for (auto const &l: {&_labelI3, &_labelI4, &_labelI5}) { + l->setText(""); + } +} + +void KsTraceGraph::_setPointerInfo(size_t i) +{ + kshark_entry *e = _data->rows()[i]; + QString event(kshark_get_event_name_easy(e)); + QString lat(kshark_get_latency_easy(e)); + QString info(kshark_get_info_easy(e)); + QString comm(kshark_get_task_easy(e)); + QString pointer, elidedText; + int labelWidth, width; + uint64_t sec, usec; + + kshark_convert_nano(e->ts, &sec, &usec); + pointer.sprintf("%lu.%lu", sec, usec); + _labelP2.setText(pointer); + + comm.append("-"); + comm.append(QString("%1").arg(kshark_get_pid_easy(e))); + + _labelI1.setText(comm); + _labelI2.setText(QString("CPU %1").arg(e->cpu)); + _labelI3.setText(lat); + _labelI4.setText(event); + _labelI5.setText(info); + QCoreApplication::processEvents(); + + labelWidth = + _pointerBar.geometry().right() - _labelI4.geometry().right(); + if (labelWidth > STRING_WIDTH(info) + FONT_WIDTH * 5) + return; + + /* + * The Info string is too long and cannot be displayed on the toolbar. + * Try to fit the text in the available space. + */ + QFontMetrics metrix(_labelI5.font()); + width = labelWidth - FONT_WIDTH * 3; + elidedText = metrix.elidedText(info, Qt::ElideRight, width); + + while(labelWidth < STRING_WIDTH(elidedText) + FONT_WIDTH * 5) { + width -= FONT_WIDTH * 3; + elidedText = metrix.elidedText(info, Qt::ElideRight, width); + } + + _labelI5.setText(elidedText); + _labelI5.setVisible(true); + QCoreApplication::processEvents(); +} + +/** + * @brief Use the active marker to select particular entry. + * + * @param row: The index of the entry to be selected by the marker. + */ +void KsTraceGraph::markEntry(size_t row) +{ + int graph, cpuGrId, taskGrId; + + _glWindow.findGraphIds(*_data->rows()[row], &cpuGrId, &taskGrId); + + /* + * If a Task graph has been found, this Task graph will be + * visible. If no Task graph has been found, make visible + * the corresponding CPU graph. + */ + if (taskGrId >= 0) + graph = taskGrId; + else + graph = cpuGrId; + + _scrollArea.ensureVisible(0, + _legendAxisX.height() + + _glWindow.vMargin() + + KS_GRAPH_HEIGHT / 2 + + graph*(KS_GRAPH_HEIGHT + _glWindow.vSpacing()), + 50, + KS_GRAPH_HEIGHT / 2 + _glWindow.vSpacing() / 2); + + _glWindow.model()->jumpTo(_data->rows()[row]->ts); + _mState->activeMarker().set(*_data, + _glWindow.model()->histo(), + row, cpuGrId, taskGrId); + + _mState->updateMarkers(*_data, &_glWindow); +} + +void KsTraceGraph::_markerReDraw() +{ + int cpuGrId, taskGrId; + size_t row; + + if (_mState->markerA()._isSet) { + row = _mState->markerA()._pos; + _glWindow.findGraphIds(*_data->rows()[row], &cpuGrId, &taskGrId); + _mState->markerA().set(*_data, + _glWindow.model()->histo(), + row, cpuGrId, taskGrId); + } + + if (_mState->markerB()._isSet) { + row = _mState->markerB()._pos; + _glWindow.findGraphIds(*_data->rows()[row], &cpuGrId, &taskGrId); + _mState->markerB().set(*_data, + _glWindow.model()->histo(), + row, cpuGrId, taskGrId); + } +} + +/** + * @brief Redreaw all CPU graphs. + * + * @param v: CPU ids to be plotted. + */ +void KsTraceGraph::cpuReDraw(QVector v) +{ + _glWindow._cpuList = v; + _selfUpdate(); +} + +/** + * @brief Redreaw all Task graphs. + * + * @param v: Process ids of the tasks to be plotted. + */ +void KsTraceGraph::taskReDraw(QVector v) +{ + _glWindow._taskList = v; + _selfUpdate(); +} + +/** Add (and plot) a CPU graph to the existing list of CPU graphs. */ +void KsTraceGraph::addCPUPlot(int cpu) +{ + if (_glWindow._cpuList.contains(cpu)) + return; + + _glWindow._cpuList.append(cpu); + _selfUpdate(); +} + +/** Add (and plot) a Task graph to the existing list of Task graphs. */ +void KsTraceGraph::addTaskPlot(int pid) +{ + if (_glWindow._taskList.contains(pid)) + return; + + _glWindow._taskList.append(pid); + _selfUpdate(); +} + +/** Update the content of all graphs. */ +void KsTraceGraph::update(KsDataStore *data) +{ + _glWindow.model()->update(data); + _selfUpdate(); +} + +/** Update the geometry of the widget. */ +void KsTraceGraph::updateGeom() +{ + int saWidth, saHeight, dwWidth, hMin; + + /* Set the size of the Scroll Area. */ + saWidth = width() - _layout.contentsMargins().left() - + _layout.contentsMargins().right(); + + saHeight = height() - _pointerBar.height() - + _navigationBar.height() - + _layout.spacing() * 2 - + _layout.contentsMargins().top() - + _layout.contentsMargins().bottom(); + + _scrollArea.resize(saWidth, saHeight); + + /* + * Calculate the width of the Draw Window, taking into account the size + * of the scroll bar. + */ + dwWidth = _scrollArea.width(); + if (_glWindow.height() + _legendAxisX.height() > _scrollArea.height()) + dwWidth -= + qApp->style()->pixelMetric(QStyle::PM_ScrollBarExtent); + + /* + * Set the height of the Draw window according to the number of + * plotted graphs. + */ + _drawWindow.resize(dwWidth, + _glWindow.height() + _legendAxisX.height()); + + /* Set the minimum height of the Graph widget. */ + hMin = _drawWindow.height() + + _pointerBar.height() + + _navigationBar.height() + + _layout.contentsMargins().top() + + _layout.contentsMargins().bottom(); + + if (hMin > KS_GRAPH_HEIGHT * 8) + hMin = KS_GRAPH_HEIGHT * 8; + + setMinimumHeight(hMin); + + /* + * Now use the height of the Draw Window to fix the maximum height + * of the Graph widget. + */ + setMaximumHeight(_drawWindow.height() + + _pointerBar.height() + + _navigationBar.height() + + _layout.spacing() * 2 + + _layout.contentsMargins().top() + + _layout.contentsMargins().bottom() + + 2); /* Just a little bit of extra space. This will + * allow the scroll bar to disappear when the + * widget is extended to maximum. + */ +} + +void KsTraceGraph::_updateGraphLegends() +{ + QString graphLegends, graphName; + QVBoxLayout *layout; + int width = 0; + + if (_legendWindow.layout()) { + /* + * Remove and delete the existing layout of the legend window. + */ + QLayoutItem *child; + while ((child = _legendWindow.layout()->takeAt(0)) != 0) { + delete child->widget(); + delete child; + } + + delete _legendWindow.layout(); + } + + layout = new QVBoxLayout; + layout->setContentsMargins(FONT_WIDTH, 0, 0, 0); + layout->setSpacing(_glWindow.vSpacing()); + layout->setAlignment(Qt::AlignTop); + layout->addSpacing(_glWindow.vMargin()); + + auto lamMakeName = [&]() { + QLabel *name = new QLabel(graphName); + + if (width < STRING_WIDTH(graphName)) + width = STRING_WIDTH(graphName); + + name->setAlignment(Qt::AlignBottom); + name->setStyleSheet("QLabel {background-color : white;}"); + name->setFixedHeight(KS_GRAPH_HEIGHT); + layout->addWidget(name); + }; + + for (auto const &cpu: _glWindow._cpuList) { + graphName = QString("CPU %1").arg(cpu); + lamMakeName(); + } + + for (auto const &pid: _glWindow._taskList) { + graphName = QString(tep_data_comm_from_pid(_data->tep(), + pid)); + graphName.append(QString("-%1").arg(pid)); + lamMakeName(); + } + + _legendWindow.setLayout(layout); + _legendWindow.setMaximumWidth(width + FONT_WIDTH); +} + +void KsTraceGraph::_updateTimeLegends() +{ + uint64_t sec, usec, tsMid; + QString tMin, tMid, tMax; + + kshark_convert_nano(_glWindow.model()->histo()->min, &sec, &usec); + tMin.sprintf("%lu.%lu", sec, usec); + _labelXMin.setText(tMin); + + tsMid = (_glWindow.model()->histo()->min + + _glWindow.model()->histo()->max) / 2; + kshark_convert_nano(tsMid, &sec, &usec); + tMid.sprintf("%lu.%lu", sec, usec); + _labelXMid.setText(tMid); + + kshark_convert_nano(_glWindow.model()->histo()->max, &sec, &usec); + tMax.sprintf("%lu.%lu", sec, usec); + _labelXMax.setText(tMax); +} + +/** + * Reimplemented event handler used to update the geometry of the widget on + * resize events. + */ +void KsTraceGraph::resizeEvent(QResizeEvent* event) +{ + updateGeom(); +} + +/** + * Reimplemented event handler (overriding a virtual function from QObject) + * used to detect the position of the mouse with respect to the Draw window and + * according to this position to grab / release the focus of the keyboard. The + * function has nothing to do with the filtering of the trace events. + */ +bool KsTraceGraph::eventFilter(QObject* obj, QEvent* evt) +{ + if (obj == &_drawWindow && evt->type() == QEvent::Enter) + _glWindow.setFocus(); + + if (obj == &_drawWindow && evt->type() == QEvent::Leave) + _glWindow.clearFocus(); + + return QWidget::eventFilter(obj, evt); +} + +void KsTraceGraph::_updateGraphs(GraphActions action) +{ + double k; + int bin; + + /* + * Set the "Key Pressed" flag. The flag will stay set as long as the user + * keeps the corresponding action button pressed. + */ + _keyPressed = true; + + /* Initialize the zooming factor with a small value. */ + k = .01; + while (_keyPressed) { + switch (action) { + case GraphActions::ZoomIn: + if (_mState->activeMarker()._isSet && + _mState->activeMarker().isVisible()) { + /* + * Use the position of the active marker as + * a focus point of the zoom. + */ + bin = _mState->activeMarker()._bin; + _glWindow.model()->zoomIn(k, bin); + } else { + /* + * The default focus point is the center of the + * range interval of the model. + */ + _glWindow.model()->zoomIn(k); + } + + break; + + case GraphActions::ZoomOut: + if (_mState->activeMarker()._isSet && + _mState->activeMarker().isVisible()) { + /* + * Use the position of the active marker as + * a focus point of the zoom. + */ + bin = _mState->activeMarker()._bin; + _glWindow.model()->zoomOut(k, bin); + } else { + /* + * The default focus point is the center of the + * range interval of the model. + */ + _glWindow.model()->zoomOut(k); + } + + break; + + case GraphActions::ScrollLeft: + _glWindow.model()->shiftBackward(10); + break; + + case GraphActions::ScrollRight: + _glWindow.model()->shiftForward(10); + break; + } + + /* + * As long as the action button is pressed, the zooming factor + * will grow smoothly until it reaches a maximum value. This + * will have a visible effect of an accelerating zoom. + */ + if (k < .25) + k *= 1.02; + + _mState->updateMarkers(*_data, &_glWindow); + _updateTimeLegends(); + QCoreApplication::processEvents(); + } +} diff --git a/kernel-shark-qt/src/KsTraceGraph.hpp b/kernel-shark-qt/src/KsTraceGraph.hpp new file mode 100644 index 0000000..b57b256 --- /dev/null +++ b/kernel-shark-qt/src/KsTraceGraph.hpp @@ -0,0 +1,137 @@ +/* SPDX-License-Identifier: LGPL-2.1 */ + +/* + * Copyright (C) 2017 VMware Inc, Yordan Karadzhov + */ + +/** + * @file KsTraceGraph.hpp + * @brief KernelShark Trace Graph. + */ +#ifndef _KS_TRACEGRAPH_H +#define _KS_TRACEGRAPH_H + +// KernelShark +#include "KsGLWidget.hpp" + +/** + * Scroll Area class, needed in order to reimplemented the handler for mouse + * wheel events. + */ +class KsGraphScrollArea : public QScrollArea { +public: + /** Create a default Scroll Area. */ + explicit KsGraphScrollArea(QWidget *parent = nullptr) + : QScrollArea(parent) {} + + /** + * Reimplemented handler for mouse wheel events. All mouse wheel + * events will be ignored. + */ + void wheelEvent(QWheelEvent *evt) {evt->ignore();} +}; + +/** + * The KsTraceViewer class provides a widget for interactive visualization of + * trace data shown as time-series. + */ +class KsTraceGraph : public QWidget +{ + Q_OBJECT +public: + explicit KsTraceGraph(QWidget *parent = nullptr); + + void loadData(KsDataStore *data); + + void setMarkerSM(KsDualMarkerSM *m); + + void reset(); + + /** Get the KsGLWidget object. */ + KsGLWidget *glPtr() {return &_glWindow;} + + void markEntry(size_t); + + void cpuReDraw(QVector); + + void taskReDraw(QVector); + + void addCPUPlot(int); + + void addTaskPlot(int); + + void update(KsDataStore *data); + + void updateGeom(); + + void resizeEvent(QResizeEvent* event) override; + + bool eventFilter(QObject* obj, QEvent* evt) override; + +private: + + void _zoomIn(); + + void _zoomOut(); + + void _quickZoomIn(); + + void _quickZoomOut(); + + void _scrollLeft(); + + void _scrollRight(); + + void _stopUpdating(); + + void _resetPointer(uint64_t ts, int cpu, int pid); + + void _setPointerInfo(size_t); + + void _updateTimeLegends(); + + void _updateGraphLegends(); + + void _selfUpdate(); + + void _markerReDraw(); + + enum class GraphActions { + ZoomIn, + ZoomOut, + ScrollLeft, + ScrollRight + }; + + void _updateGraphs(GraphActions action); + + QToolBar _pointerBar, _navigationBar; + + QPushButton _zoomInButton, _quickZoomInButton; + QPushButton _zoomOutButton, _quickZoomOutButton; + + QPushButton _scrollLeftButton, _scrollRightButton; + + QLabel _labelP1, _labelP2, // Pointer + _labelI1, _labelI2, _labelI3, _labelI4, _labelI5; // Proc. info + + KsGraphScrollArea _scrollArea; + + QWidget _drawWindow, _legendWindow, _legendAxisX; + + QLabel _labelXMin, _labelXMid, _labelXMax; + + KsGLWidget _glWindow; + + QGridLayout _drawLayout; + + QVBoxLayout _layout; + + KsDualMarkerSM *_mState; + + KsDataStore *_data; + + bool _keyPressed; +}; + +#endif // _KS_TRACEGRAPH_H