Introduce processImplHook

Call new hook from inside QtcProcess::start().
This hook calls new virtual method
IDevice::createProcessInterface().
That's all what should be needed from device
to setup properly device specific process.

Make QtcProcess::createProcessInterface() private now.

Change-Id: I2136698063bafc846ebc2d3db6cc11376902eff0
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: hjk <hjk@qt.io>

src/libs/utils/qtcprocess.cpp

@@ -822,12 +822,21 @@ void QtcProcess::start()
 // TODO: Uncomment when we de-virtualize start()
 //    QTC_ASSERT(state() == QProcess::NotRunning, return);
 
+    ProcessInterface *processImpl = nullptr;
     if (d->m_setup.m_commandLine.executable().needsDevice()) {
-        QTC_ASSERT(s_deviceHooks.startProcessHook, return);
-        s_deviceHooks.startProcessHook(*this);
-        return;
+        if (s_deviceHooks.processImplHook) { // TODO: replace "if" with an assert for the hook
+            processImpl = s_deviceHooks.processImplHook(commandLine().executable());
+        }
+        if (!processImpl) { // TODO: remove this branch when docker is adapted accordingly
+            QTC_ASSERT(s_deviceHooks.startProcessHook, return);
+            s_deviceHooks.startProcessHook(*this);
+            return;
+        }
+    } else {
+        processImpl = d->createProcessInterface();
     }
-    setProcessInterface(d->createProcessInterface());
+    QTC_ASSERT(processImpl, return);
+    setProcessInterface(processImpl);
     d->clearForRun();
     d->m_process->m_setup.m_commandLine = d->fullCommandLine();
     d->m_process->m_setup.m_environment = d->fullEnvironment();

src/libs/utils/qtcprocess.h

@@ -56,8 +56,6 @@ public:
     QtcProcess(QObject *parent = nullptr);
     ~QtcProcess();
 
-    void setProcessInterface(ProcessInterface *interface);
-
     // ProcessInterface related
 
     void start() override;
@@ -215,6 +213,8 @@ public:
     QString toStandaloneCommandLine() const;
 
 private:
+    void setProcessInterface(ProcessInterface *interface);
+
     friend QTCREATOR_UTILS_EXPORT QDebug operator<<(QDebug str, const QtcProcess &r);
 
     friend class Internal::QtcProcessPrivate;
@@ -229,6 +229,8 @@ private:
 class DeviceProcessHooks
 {
 public:
+    std::function<ProcessInterface *(const FilePath &)> processImplHook;
+    // TODO: remove this hook
     std::function<void(QtcProcess &)> startProcessHook;
     std::function<Environment(const FilePath &)> systemEnvironmentForBinary;
 };

src/plugins/projectexplorer/devicesupport/devicemanager.cpp

@@ -595,6 +595,7 @@ DeviceManager::DeviceManager(bool isInstance) : d(std::make_unique<DeviceManager
 
     DeviceProcessHooks processHooks;
 
+    // TODO: remove this hook
     processHooks.startProcessHook = [](QtcProcess &process) {
         FilePath filePath = process.commandLine().executable();
         auto device = DeviceManager::deviceForPath(filePath);
@@ -602,6 +603,12 @@ DeviceManager::DeviceManager(bool isInstance) : d(std::make_unique<DeviceManager
         device->runProcess(process);
     };
 
+    processHooks.processImplHook = [](const FilePath &filePath) -> ProcessInterface * {
+        auto device = DeviceManager::deviceForPath(filePath);
+        QTC_ASSERT(device, return nullptr);
+        return device->createProcessInterface();
+    };
+
     processHooks.systemEnvironmentForBinary = [](const FilePath &filePath) {
         auto device = DeviceManager::deviceForPath(filePath);
         QTC_ASSERT(device, return Environment());

src/plugins/projectexplorer/devicesupport/idevice.cpp

@@ -422,6 +422,13 @@ bool IDevice::setPermissions(const FilePath &filePath, QFile::Permissions) const
     return false;
 }
 
+ProcessInterface *IDevice::createProcessInterface() const
+{
+// TODO: uncomment below assert when docker device implements this method
+//    QTC_ASSERT(false, return nullptr);
+    return nullptr;
+}
+
 void IDevice::runProcess(QtcProcess &process) const
 {
     Q_UNUSED(process);

src/plugins/projectexplorer/devicesupport/idevice.h

@@ -54,6 +54,7 @@ class Environment;
 class Icon;
 class PortList;
 class Port;
+class ProcessInterface;
 class QtcProcess;
 } // Utils
 
@@ -266,6 +267,7 @@ public:
     virtual QDateTime lastModified(const Utils::FilePath &filePath) const;
     virtual QFile::Permissions permissions(const Utils::FilePath &filePath) const;
     virtual bool setPermissions(const Utils::FilePath &filePath, QFile::Permissions) const;
+    virtual Utils::ProcessInterface *createProcessInterface() const;
     virtual void runProcess(Utils::QtcProcess &process) const;
     virtual Utils::Environment systemEnvironment() const;
     virtual qint64 fileSize(const Utils::FilePath &filePath) const;