Introduce the concept of a "device process".

Provide a QProcess-like abstraction that can be used
to implement processes running locally or on a remote
device. Objects of a concrete class implementing the functionality
are created by IDevice objects.
Current implementations are:
     - Local execution (QProcess-based), provided via the DesktopDevice.
     - Remote execution via SSH.
     - A specialized case of the former for remote Linux systems (provided by
       LinuxDevice).
The latter is already being used in a number of places. As a result, lots of
code dealing with details such as setting the remote environment could be
moved to a central location. These things are no longer the concern of whoever
is wishing to run a remote process.

Change-Id: I919260ee6e77a020ca47226a4a534e7b8398106f
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/remotelinux/linuxdevice.cpp

@@ -30,6 +30,7 @@
 #include "linuxdevice.h"
 
 #include "genericlinuxdeviceconfigurationwidget.h"
+#include "linuxdeviceprocess.h"
 #include "linuxdevicetester.h"
 #include "publickeydeploymentdialog.h"
 #include "remotelinux_constants.h"
@@ -122,14 +123,26 @@ QString LinuxDeviceProcessSupport::killProcessByPidCommandLine(int pid) const
     return QLatin1String("kill -9 ") + QString::number(pid);
 }
 
-QString LinuxDeviceProcessSupport::killProcessByNameCommandLine(const QString &filePath) const
+
+static QString signalProcessByNameCommandLine(const QString &filePath, int signal)
 {
     return QString::fromLatin1("cd /proc; for pid in `ls -d [0123456789]*`; "
             "do "
                 "if [ \"`readlink /proc/$pid/exe`\" = \"%1\" ]; then "
-                "    kill $pid; sleep 1; kill -9 $pid; "
+                "    kill %2 $pid;"
                 "fi; "
-            "done").arg(filePath);
+            "done").arg(filePath).arg(signal);
+}
+
+QString LinuxDeviceProcessSupport::killProcessByNameCommandLine(const QString &filePath) const
+{
+    return QString::fromLatin1("%1; %2").arg(signalProcessByNameCommandLine(filePath, 15),
+                                             signalProcessByNameCommandLine(filePath, 9));
+}
+
+QString LinuxDeviceProcessSupport::interruptProcessByNameCommandLine(const QString &filePath) const
+{
+    return signalProcessByNameCommandLine(filePath, 2);
 }
 
 
@@ -244,6 +257,11 @@ DeviceProcessSupport::Ptr LinuxDevice::processSupport() const
     return DeviceProcessSupport::Ptr(new LinuxDeviceProcessSupport);
 }
 
+DeviceProcess *LinuxDevice::createProcess(QObject *parent) const
+{
+    return new LinuxDeviceProcess(sharedFromThis(), parent);
+}
+
 bool LinuxDevice::canAutoDetectPorts() const
 {
     return true;