Merge from 3.x: PR #6238

Fixes #6220

spyder_profiler/widgets/profilergui.py

@@ -264,7 +264,7 @@ def start(self, wdir=None, args=None, pythonpath=None):
                                           lambda: self.read_output(error=True))
         self.process.finished.connect(lambda ec, es=QProcess.ExitStatus:
                                       self.finished(ec, es))
-        self.stop_button.clicked.connect(self.process.kill)
+        self.stop_button.clicked.connect(self.kill)
 
         if pythonpath is not None:
             env = [to_text_string(_pth)
@@ -278,6 +278,7 @@ def start(self, wdir=None, args=None, pythonpath=None):
 
         self.output = ''
         self.error_output = ''
+        self.stopped = False
 
         p_args = ['-m', 'cProfile', '-o', self.DATAPATH]
         if os.name == 'nt':
@@ -300,7 +301,12 @@ def start(self, wdir=None, args=None, pythonpath=None):
         if not running:
             QMessageBox.critical(self, _("Error"),
                                  _("Process failed to start"))
-
+
+    def kill(self):
+        """Stop button pressed."""
+        self.process.kill()
+        self.stopped = True
+
     def set_running_state(self, state=True):
         self.start_button.setEnabled(not state)
         self.stop_button.setEnabled(state)
@@ -346,6 +352,11 @@ def show_data(self, justanalyzed=False):
         if not filename:
             return
 
+        if self.stopped:
+            self.datelabel.setText(_('Run stopped by user.'))
+            self.datatree.initialize_view()
+            return
+
         self.datelabel.setText(_('Sorting data, please wait...'))
         QApplication.processEvents()
 
@@ -465,13 +476,16 @@ def initialize_view(self):
     def load_data(self, profdatafile):
         """Load profiler data saved by profile/cProfile module"""
         import pstats
-        stats_indi = [pstats.Stats(profdatafile),]
+        try:
+            stats_indi = [pstats.Stats(profdatafile), ]
+        except (OSError, IOError):
+            return
         self.profdata = stats_indi[0]
 
         if self.compare_file is not None:
             try:
                 stats_indi.append(pstats.Stats(self.compare_file))
-            except IOError as e:
+            except (OSError, IOError) as e:
                 QMessageBox.critical(
                     self, _("Error"),
                     _("Error when trying to load profiler results"))