Fix various crashes

Task-Number: QTCREATORBUG-6365

Change-Id: I19a200e3c811eef83d591f6eacca3e48eb0fba8f
Reviewed-by: Tobias Hunger <tobias.hunger@nokia.com>

src/plugins/projectexplorer/buildmanager.cpp

@@ -89,6 +89,8 @@ struct BuildManagerPrivate {
     QString m_currentConfiguration;
     // used to decide if we are building a project to decide when to emit buildStateChanged(Project *)
     QHash<Project *, int>  m_activeBuildSteps;
+    QHash<Target *, int> m_activeBuildStepsPerTarget;
+    QHash<ProjectConfiguration *, int> m_activeBuildStepsPerProjectConfiguration;
     Project *m_previousBuildStepProject;
     // is set to true while canceling, so that nextBuildStep knows that the BuildStep finished because of canceling
     bool m_canceling;
@@ -221,7 +223,7 @@ void BuildManager::cancel()
         QTimer::singleShot(0, this, SLOT(emitCancelMessage()));
 
         disconnectOutput(d->m_currentBuildStep);
-        decrementActiveBuildSteps(d->m_currentBuildStep->buildConfiguration()->target()->project());
+        decrementActiveBuildSteps(d->m_currentBuildStep);
 
         d->m_progressFutureInterface->setProgressValueAndText(d->m_progress*100, tr("Build canceled")); //TODO NBS fix in qtconcurrent
         clearBuildQueue();
@@ -256,7 +258,7 @@ void BuildManager::emitCancelMessage()
 void BuildManager::clearBuildQueue()
 {
     foreach (BuildStep *bs, d->m_buildQueue) {
-        decrementActiveBuildSteps(bs->buildConfiguration()->target()->project());
+        decrementActiveBuildSteps(bs);
         disconnectOutput(bs);
     }
 
@@ -382,7 +384,7 @@ void BuildManager::nextBuildQueue()
     disconnectOutput(d->m_currentBuildStep);
     ++d->m_progress;
     d->m_progressFutureInterface->setProgressValueAndText(d->m_progress*100, msgProgress(d->m_progress, d->m_maxProgress));
-    decrementActiveBuildSteps(d->m_currentBuildStep->buildConfiguration()->target()->project());
+    decrementActiveBuildSteps(d->m_currentBuildStep);
 
     bool result = d->m_watcher.result();
     if (!result) {
@@ -491,7 +493,7 @@ bool BuildManager::buildQueueAppend(QList<BuildStep *> steps)
     for (i = 0; i < count; ++i) {
         ++d->m_maxProgress;
         d->m_buildQueue.append(steps.at(i));
-        incrementActiveBuildSteps(steps.at(i)->buildConfiguration()->target()->project());
+        incrementActiveBuildSteps(steps.at(i));
     }
     return true;
 }
@@ -531,14 +533,29 @@ void BuildManager::appendStep(BuildStep *step)
     startBuildQueue();
 }
 
+template <class T>
+int count(const QHash<T *, int> &hash, T *key)
+{
+    typename QHash<T *, int>::const_iterator it = hash.find(key);
+    typename QHash<T *, int>::const_iterator end = hash.end();
+    if (it != end)
+        return *it;
+    return 0;
+}
+
 bool BuildManager::isBuilding(Project *pro)
 {
-    QHash<Project *, int>::iterator it = d->m_activeBuildSteps.find(pro);
-    QHash<Project *, int>::iterator end = d->m_activeBuildSteps.end();
-    if (it == end || *it == 0)
-        return false;
-    else
-        return true;
+    return count(d->m_activeBuildSteps, pro) > 0;
+}
+
+bool BuildManager::isBuilding(Target *t)
+{
+    return count(d->m_activeBuildStepsPerTarget, t) > 0;
+}
+
+bool BuildManager::isBuilding(ProjectConfiguration *p)
+{
+    return count(d->m_activeBuildStepsPerProjectConfiguration, p) > 0;
 }
 
 bool BuildManager::isBuilding(BuildStep *step)
@@ -546,33 +563,51 @@ bool BuildManager::isBuilding(BuildStep *step)
     return (d->m_currentBuildStep == step) || d->m_buildQueue.contains(step);
 }
 
-void BuildManager::incrementActiveBuildSteps(Project *pro)
+template <class T> bool increment(QHash<T *, int> &hash, T *key)
 {
-    QHash<Project *, int>::iterator it = d->m_activeBuildSteps.find(pro);
-    QHash<Project *, int>::iterator end = d->m_activeBuildSteps.end();
+    typename QHash<T *, int>::iterator it = hash.find(key);
+    typename QHash<T *, int>::iterator end = hash.end();
     if (it == end) {
-        d->m_activeBuildSteps.insert(pro, 1);
-        emit buildStateChanged(pro);
+        hash.insert(key, 1);
+        return true;
     } else if (*it == 0) {
         ++*it;
-        emit buildStateChanged(pro);
+        return true;
     } else {
         ++*it;
     }
+    return false;
 }
 
-void BuildManager::decrementActiveBuildSteps(Project *pro)
+template <class T> bool decrement(QHash<T *, int> &hash, T *key)
 {
-    QHash<Project *, int>::iterator it = d->m_activeBuildSteps.find(pro);
-    QHash<Project *, int>::iterator end = d->m_activeBuildSteps.end();
+    typename QHash<T *, int>::iterator it = hash.find(key);
+    typename QHash<T *, int>::iterator end = hash.end();
     if (it == end) {
-        Q_ASSERT(false && "BuildManager d->m_activeBuildSteps says project is not building, but apparently a build step was still in the queue.");
+        // Can't happen
     } else if (*it == 1) {
         --*it;
-        emit buildStateChanged(pro);
+        return true;
     } else {
         --*it;
     }
+    return false;
+}
+
+void BuildManager::incrementActiveBuildSteps(BuildStep *bs)
+{
+    increment<ProjectConfiguration>(d->m_activeBuildStepsPerProjectConfiguration, bs->projectConfiguration());
+    increment<Target>(d->m_activeBuildStepsPerTarget, bs->target());
+    if (increment<Project>(d->m_activeBuildSteps, bs->project()))
+        emit buildStateChanged(bs->project());
+}
+
+void BuildManager::decrementActiveBuildSteps(BuildStep *bs)
+{
+    decrement<ProjectConfiguration>(d->m_activeBuildStepsPerProjectConfiguration, bs->projectConfiguration());
+    decrement<Target>(d->m_activeBuildStepsPerTarget, bs->target());
+    if (decrement<Project>(d->m_activeBuildSteps, bs->project()))
+        emit buildStateChanged(bs->project());
 }
 
 void BuildManager::disconnectOutput(BuildStep *bs)

src/plugins/projectexplorer/buildmanager.h

@@ -63,6 +63,8 @@ public:
     bool buildLists(QList<BuildStepList *> bsls);
     bool buildList(BuildStepList *bsl);
     bool isBuilding(Project *p);
+    bool isBuilding(Target *t);
+    bool isBuilding(ProjectConfiguration *p);
     bool isBuilding(BuildStep *step);
 
     // Append any build step to the list of build steps (currently only used to add the QMakeStep)
@@ -102,8 +104,8 @@ private:
     void nextStep();
     void clearBuildQueue();
     bool buildQueueAppend(QList<BuildStep *> steps);
-    void incrementActiveBuildSteps(Project *pro);
-    void decrementActiveBuildSteps(Project *pro);
+    void incrementActiveBuildSteps(BuildStep *bs);
+    void decrementActiveBuildSteps(BuildStep *bs);
     void disconnectOutput(BuildStep *bs);
 
     BuildManagerPrivate *d;

src/plugins/projectexplorer/buildsettingspropertiespage.cpp

@@ -42,6 +42,8 @@
 #include <coreplugin/coreconstants.h>
 #include <extensionsystem/pluginmanager.h>
 #include <utils/qtcassert.h>
+#include <projectexplorer/projectexplorer.h>
+#include <projectexplorer/buildmanager.h>
 
 #include <QtCore/QMargins>
 #include <QtCore/QTimer>
@@ -370,6 +372,29 @@ void BuildSettingsWidget::deleteConfiguration(BuildConfiguration *deleteConfigur
         m_target->buildConfigurations().size() <= 1)
         return;
 
+    ProjectExplorer::BuildManager *bm = ProjectExplorerPlugin::instance()->buildManager();
+    if (bm->isBuilding(deleteConfiguration)) {
+        QMessageBox box;
+        QPushButton *closeAnyway = box.addButton(tr("Cancel Build && Remove Build Configuration"), QMessageBox::AcceptRole);
+        QPushButton *cancelClose = box.addButton(tr("Do Not Remove"), QMessageBox::RejectRole);
+        box.setDefaultButton(cancelClose);
+        box.setWindowTitle(tr("Remove Build Configuration %1?").arg(deleteConfiguration->displayName()));
+        box.setText(tr("The build configuration <b>%1</b> is currently being built.").arg(deleteConfiguration->displayName()));
+        box.setInformativeText(tr("Do you want to cancel the build process and remove the Build Configuration anyway?"));
+        box.exec();
+        if (box.clickedButton() != closeAnyway)
+            return;
+        bm->cancel();
+    } else {
+        QMessageBox msgBox(QMessageBox::Question, tr("Remove Build Configuration?"),
+                           tr("Do you really want to delete build configuration <b>%1</b>?").arg(deleteConfiguration->displayName()),
+                           QMessageBox::Yes|QMessageBox::No, this);
+        msgBox.setDefaultButton(QMessageBox::No);
+        msgBox.setEscapeButton(QMessageBox::No);
+        if (msgBox.exec() == QMessageBox::No)
+            return;
+    }
+
     m_target->removeBuildConfiguration(deleteConfiguration);
 
     updateBuildSettings();

src/plugins/projectexplorer/buildstep.cpp

@@ -156,11 +156,21 @@ DeployConfiguration *BuildStep::deployConfiguration() const
     return dc;
 }
 
+ProjectConfiguration *BuildStep::projectConfiguration() const
+{
+    return static_cast<ProjectConfiguration *>(parent()->parent());
+}
+
 Target *BuildStep::target() const
 {
     return qobject_cast<Target *>(parent()->parent()->parent());
 }
 
+Project *BuildStep::project() const
+{
+    return target()->project();
+}
+
 bool BuildStep::immutable() const
 {
     return false;

src/plugins/projectexplorer/buildstep.h

@@ -72,7 +72,9 @@ public:
 
     BuildConfiguration *buildConfiguration() const;
     DeployConfiguration *deployConfiguration() const;
+    ProjectConfiguration *projectConfiguration() const;
     Target *target() const;
+    Project *project() const;
 
     enum OutputFormat { NormalOutput, ErrorOutput, MessageOutput, ErrorMessageOutput };
     enum OutputNewlineSetting { DoAppendNewline, DontAppendNewline };

src/plugins/projectexplorer/project.cpp

@@ -43,6 +43,7 @@
 #include <coreplugin/ifile.h>
 #include <coreplugin/icontext.h>
 #include <extensionsystem/pluginmanager.h>
+#include <projectexplorer/buildmanager.h>
 #include <limits>
 #include <utils/qtcassert.h>
 
@@ -166,9 +167,15 @@ void Project::addTarget(Target *t)
         setActiveTarget(t);
 }
 
-void Project::removeTarget(Target *target)
+bool Project::removeTarget(Target *target)
 {
-    QTC_ASSERT(target && d->m_targets.contains(target), return);
+    if (!target || !d->m_targets.contains(target))
+        return false;
+
+    ProjectExplorer::BuildManager *bm =
+            ProjectExplorer::ProjectExplorerPlugin::instance()->buildManager();
+    if (bm->isBuilding(target))
+        return false;
 
     emit aboutToRemoveTarget(target);
 

src/plugins/projectexplorer/project.h

@@ -83,7 +83,7 @@ public:
 
     // Target:
     void addTarget(Target *target);
-    void removeTarget(Target *target);
+    bool removeTarget(Target *target);
 
     QList<Target *> targets() const;
     // Note: activeTarget can be 0 (if no targets are defined).

src/plugins/projectexplorer/projectexplorer.cpp

@@ -1031,6 +1031,20 @@ void ProjectExplorerPlugin::unloadProject()
     if (debug)
         qDebug() << "ProjectExplorerPlugin::unloadProject";
 
+    if (buildManager()->isBuilding(d->m_currentProject)) {
+        QMessageBox box;
+        QPushButton *closeAnyway = box.addButton(tr("Cancel Build && Unload"), QMessageBox::AcceptRole);
+        QPushButton *cancelClose = box.addButton(tr("Do Not Unload"), QMessageBox::RejectRole);
+        box.setDefaultButton(cancelClose);
+        box.setWindowTitle(tr("Unload Project %1?").arg(d->m_currentProject->displayName()));
+        box.setText(tr("The project %1 is currently being built.").arg(d->m_currentProject->displayName()));
+        box.setInformativeText(tr("Do you want to cancel the build process and unload the project anyway?"));
+        box.exec();
+        if (box.clickedButton() != closeAnyway)
+            return;
+        buildManager()->cancel();
+    }
+
     Core::IFile *fi = d->m_currentProject->file();
 
     if (!fi || fi->fileName().isEmpty()) //nothing to save?

src/plugins/projectexplorer/runsettingspropertiespage.cpp

@@ -42,6 +42,8 @@
 
 #include <coreplugin/coreconstants.h>
 #include <extensionsystem/pluginmanager.h>
+#include <projectexplorer/projectexplorer.h>
+#include <projectexplorer/buildmanager.h>
 #include <utils/qtcassert.h>
 
 #include <QtCore/QPair>
@@ -389,15 +391,31 @@ void RunSettingsWidget::addDeployConfiguration()
 void RunSettingsWidget::removeDeployConfiguration()
 {
     DeployConfiguration *dc = m_target->activeDeployConfiguration();
-    QMessageBox msgBox(QMessageBox::Question, tr("Remove Deploy Configuration?"),
-                       tr("Do you really want to delete deploy configuration <b>%1</b>?").arg(dc->displayName()),
-                       QMessageBox::Yes|QMessageBox::No, this);
-    msgBox.setDefaultButton(QMessageBox::No);
-    msgBox.setEscapeButton(QMessageBox::No);
-    if (msgBox.exec() == QMessageBox::No)
-        return;
+    ProjectExplorer::BuildManager *bm = ProjectExplorerPlugin::instance()->buildManager();
+    if (bm->isBuilding(dc)) {
+        QMessageBox box;
+        QPushButton *closeAnyway = box.addButton(tr("Cancel Build && Remove Deploy Configuration"), QMessageBox::AcceptRole);
+        QPushButton *cancelClose = box.addButton(tr("Do Not Remove"), QMessageBox::RejectRole);
+        box.setDefaultButton(cancelClose);
+        box.setWindowTitle(tr("Remove Deploy Configuration %1?").arg(dc->displayName()));
+        box.setText(tr("The deploy configuration <b>%1</b> is currently being built.").arg(dc->displayName()));
+        box.setInformativeText(tr("Do you want to cancel the build process and remove the Deploy Configuration anyway?"));
+        box.exec();
+        if (box.clickedButton() != closeAnyway)
+            return;
+        bm->cancel();
+    } else {
+        QMessageBox msgBox(QMessageBox::Question, tr("Remove Deploy Configuration?"),
+                           tr("Do you really want to delete deploy configuration <b>%1</b>?").arg(dc->displayName()),
+                           QMessageBox::Yes|QMessageBox::No, this);
+        msgBox.setDefaultButton(QMessageBox::No);
+        msgBox.setEscapeButton(QMessageBox::No);
+        if (msgBox.exec() == QMessageBox::No)
+            return;
+    }
 
     m_target->removeDeployConfiguration(dc);
+
     m_removeDeployToolButton->setEnabled(m_target->deployConfigurations().size() > 1);
 }
 

src/plugins/projectexplorer/target.cpp

@@ -42,6 +42,8 @@
 
 #include <limits>
 #include <extensionsystem/pluginmanager.h>
+#include <projectexplorer/buildmanager.h>
+#include <projectexplorer/projectexplorer.h>
 #include <utils/qtcassert.h>
 
 #include <QtGui/QIcon>
@@ -174,11 +176,16 @@ void Target::addBuildConfiguration(BuildConfiguration *configuration)
         setActiveBuildConfiguration(configuration);
 }
 
-void Target::removeBuildConfiguration(BuildConfiguration *configuration)
+bool Target::removeBuildConfiguration(BuildConfiguration *configuration)
 {
     //todo: this might be error prone
     if (!d->m_buildConfigurations.contains(configuration))
-        return;
+        return false;
+
+    ProjectExplorer::BuildManager *bm =
+            ProjectExplorer::ProjectExplorerPlugin::instance()->buildManager();
+    if (bm->isBuilding(configuration))
+        return false;
 
     d->m_buildConfigurations.removeOne(configuration);
 
@@ -192,6 +199,7 @@ void Target::removeBuildConfiguration(BuildConfiguration *configuration)
     }
 
     delete configuration;
+    return true;
 }
 
 QList<BuildConfiguration *> Target::buildConfigurations() const
@@ -242,11 +250,16 @@ void Target::addDeployConfiguration(DeployConfiguration *dc)
     Q_ASSERT(activeDeployConfiguration());
 }
 
-void Target::removeDeployConfiguration(DeployConfiguration *dc)
+bool Target::removeDeployConfiguration(DeployConfiguration *dc)
 {
     //todo: this might be error prone
     if (!d->m_deployConfigurations.contains(dc))
-        return;
+        return false;
+
+    ProjectExplorer::BuildManager *bm =
+            ProjectExplorer::ProjectExplorerPlugin::instance()->buildManager();
+    if (bm->isBuilding(dc))
+        return false;
 
     d->m_deployConfigurations.removeOne(dc);
 
@@ -260,6 +273,7 @@ void Target::removeDeployConfiguration(DeployConfiguration *dc)
     }
 
     delete dc;
+    return true;
 }
 
 QList<DeployConfiguration *> Target::deployConfigurations() const

src/plugins/projectexplorer/target.h

@@ -67,7 +67,7 @@ public:
 
     // Build configuration
     void addBuildConfiguration(BuildConfiguration *configuration);
-    void removeBuildConfiguration(BuildConfiguration *configuration);
+    bool removeBuildConfiguration(BuildConfiguration *configuration);
 
     QList<BuildConfiguration *> buildConfigurations() const;
     virtual BuildConfiguration *activeBuildConfiguration() const;
@@ -77,7 +77,7 @@ public:
 
     // DeployConfiguration
     void addDeployConfiguration(DeployConfiguration *dc);
-    void removeDeployConfiguration(DeployConfiguration *dc);
+    bool removeDeployConfiguration(DeployConfiguration *dc);
 
     QList<DeployConfiguration *> deployConfigurations() const;
     virtual DeployConfiguration *activeDeployConfiguration() const;

src/plugins/projectexplorer/targetsettingspanel.cpp

@@ -40,6 +40,8 @@
 #include "targetsettingswidget.h"
 
 #include <extensionsystem/pluginmanager.h>
+#include <projectexplorer/projectexplorer.h>
+#include <projectexplorer/buildmanager.h>
 
 #include <QtCore/QCoreApplication>
 #include <QtGui/QLabel>
@@ -47,6 +49,7 @@
 #include <QtGui/QMessageBox>
 #include <QtGui/QVBoxLayout>
 #include <QtGui/QStackedWidget>
+#include <QtGui/QPushButton>
 
 using namespace ProjectExplorer;
 using namespace ProjectExplorer::Internal;
@@ -230,13 +233,33 @@ void TargetSettingsPanelWidget::removeTarget()
 {
     int index = m_selector->currentIndex();
     Target *t = m_targets.at(index);
-    int ret = QMessageBox::warning(this, tr("Qt Creator"),
-                                   tr("Do you really want to remove the\n"
-                                      "\"%1\" target?").arg(t->displayName()),
-                                    QMessageBox::Yes | QMessageBox::No,
-                                    QMessageBox::No);
-    if (ret == QMessageBox::Yes)
-        m_project->removeTarget(t);
+
+    ProjectExplorer::BuildManager *bm = ProjectExplorerPlugin::instance()->buildManager();
+    if (bm->isBuilding(t)) {
+        QMessageBox box;
+        QPushButton *closeAnyway = box.addButton(tr("Cancel Build && Remove Target"), QMessageBox::AcceptRole);
+        QPushButton *cancelClose = box.addButton(tr("Do Not Remove"), QMessageBox::RejectRole);
+        box.setDefaultButton(cancelClose);
+        box.setWindowTitle(tr("Remove Target %1?").arg(t->displayName()));
+        box.setText(tr("The target <b>%1</b> is currently being built.").arg(t->displayName()));
+        box.setInformativeText(tr("Do you want to cancel the build process and remove the Target anyway?"));
+        box.exec();
+        if (box.clickedButton() != closeAnyway)
+            return;
+        bm->cancel();
+    } else {
+        // We don't show the generic message box on removing the target, if we showed the still building one
+        int ret = QMessageBox::warning(this, tr("Qt Creator"),
+                                       tr("Do you really want to remove the\n"
+                                          "\"%1\" target?").arg(t->displayName()),
+                                        QMessageBox::Yes | QMessageBox::No,
+                                        QMessageBox::No);
+        if (ret != QMessageBox::Yes)
+            return;
+    }
+
+    m_project->removeTarget(t);
+
 }
 
 void TargetSettingsPanelWidget::targetAdded(ProjectExplorer::Target *target)