Add PerfProfiler plugin

This moves the previously commercial PerfProfiler plugin into QtCreator.

Task-number: QTCREATORBUG-21344
Change-Id: I41f4a9451c2fe8ff4e1108e07db2e72e8c613c43
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/perfprofiler/perftracepointdialog.cpp

@@ -0,0 +1,159 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#include "perftracepointdialog.h"
+#include "ui_perftracepointdialog.h"
+
+#include <projectexplorer/kitinformation.h>
+#include <projectexplorer/project.h>
+#include <projectexplorer/session.h>
+#include <projectexplorer/target.h>
+
+#include <QVBoxLayout>
+#include <QHBoxLayout>
+#include <QPushButton>
+#include <QTimer>
+
+namespace PerfProfiler {
+namespace Internal {
+
+using namespace ProjectExplorer;
+
+PerfTracePointDialog::PerfTracePointDialog() :
+    m_ui(new Ui::PerfTracePointDialog)
+{
+    m_ui->setupUi(this);
+
+    Project *currentProject = SessionManager::startupProject();
+    QTC_ASSERT(currentProject, return);
+
+    const Target *target = currentProject->activeTarget();
+    QTC_ASSERT(target, return);
+
+    const Kit *kit = target->kit();
+    QTC_ASSERT(kit, return);
+
+    m_device = DeviceKitInformation::device(kit);
+    QTC_ASSERT(m_device, return);
+
+    QFile file(":/perfprofiler/tracepoints.sh");
+    file.open(QIODevice::ReadOnly);
+    m_ui->textEdit->setPlainText(QString::fromUtf8(file.readAll()));
+
+    m_ui->privilegesChooser->setCurrentText(m_device->type() == Constants::DESKTOP_DEVICE_TYPE
+                                            ? QLatin1String("pkexec") : QLatin1String("n.a."));
+}
+
+PerfTracePointDialog::~PerfTracePointDialog()
+{
+    if (m_process && m_process->state() != QProcess::NotRunning) {
+        DeviceProcess *process = m_process.release();
+        connect(process, &DeviceProcess::finished, process, &QObject::deleteLater);
+        process->kill();
+        QTimer::singleShot(10000, process, &QObject::deleteLater);
+    }
+}
+
+void PerfTracePointDialog::runScript()
+{
+    m_ui->label->setText(tr("Executing script ..."));
+    m_ui->textEdit->setReadOnly(true);
+    m_ui->privilegesChooser->setEnabled(false);
+    m_ui->buttonBox->button(QDialogButtonBox::Ok)->setEnabled(false);
+
+    m_process.reset(m_device->createProcess(this));
+
+    Runnable runnable;
+    const QString elevate = m_ui->privilegesChooser->currentText();
+    if (elevate != QLatin1String("n.a.")) {
+        runnable.executable = elevate;
+        runnable.commandLineArguments = "sh";
+    } else {
+        runnable.executable = "sh";
+    }
+
+    connect(m_process.get(), &DeviceProcess::started,
+            this, &PerfTracePointDialog::feedScriptToProcess);
+
+    connect(m_process.get(), &DeviceProcess::finished,
+            this, &PerfTracePointDialog::handleProcessFinished);
+
+    connect(m_process.get(), &DeviceProcess::error,
+            this, &PerfTracePointDialog::handleProcessError);
+
+    m_process->start(runnable);
+}
+
+void PerfTracePointDialog::feedScriptToProcess()
+{
+    m_process->write(m_ui->textEdit->toPlainText().toUtf8());
+    m_ui->textEdit->clear();
+}
+
+void PerfTracePointDialog::handleProcessFinished()
+{
+    if (m_process->exitCode() != 0) {
+        m_ui->label->setText(tr("Failed to create trace points."));
+    } else {
+        m_ui->label->setText(tr("Created trace points for: %1")
+                             .arg(QString::fromUtf8(
+                                      m_process->readAllStandardOutput().trimmed()
+                                      .replace('\n', ", "))));
+    }
+    m_ui->textEdit->setHtml(QString::fromUtf8(m_process->readAllStandardError()));
+    m_ui->buttonBox->button(QDialogButtonBox::Ok)->setEnabled(true);
+    m_ui->buttonBox->button(QDialogButtonBox::Cancel)->setEnabled(false);
+}
+
+void PerfTracePointDialog::handleProcessError(QProcess::ProcessError error)
+{
+    if (error == QProcess::FailedToStart) {
+        m_ui->label->setText(tr("Failed to run trace point script: %1").arg(error));
+        m_ui->textEdit->setText(QString::fromUtf8(m_process->readAllStandardError()));
+        m_ui->buttonBox->button(QDialogButtonBox::Ok)->setEnabled(true);
+        m_ui->buttonBox->button(QDialogButtonBox::Cancel)->setEnabled(false);
+    }
+}
+
+void PerfTracePointDialog::accept()
+{
+    if (m_process) {
+        QTC_CHECK(m_process->state() == QProcess::NotRunning);
+        QDialog::accept();
+    } else {
+        runScript();
+    }
+}
+
+void PerfTracePointDialog::reject()
+{
+    if (m_process)
+        m_process->kill();
+    else
+        QDialog::reject();
+}
+
+} // namespace Internal
+} // namespace PerfProfiler