put try/catch for all monitor callbacks (suggestion Xiaoqiang)

swissmx.py

@@ -717,30 +717,33 @@ class WndSwissMx(QMainWindow, Ui_MainWindow):
         cam.run(self.cb_new_frame_pv)
 
   def cb_new_frame_pv(self, **kwargs):
-    #thrd=threading.current_thread()
-    #_log.debug(f'thread:{thrd.getName()}, {thrd.native_id}')
-    #_log.debug(f"{kwargs['timestamp']}")
+    try: #pv-monitor-func
+      #thrd=threading.current_thread()
+      #_log.debug(f'thread:{thrd.getName()}, {thrd.native_id}')
+      #_log.debug(f"{kwargs['timestamp']}")
 
-    app=QApplication.instance()
-    cam=app._camera
-    sz=cam._sz
-    if kwargs['count']==sz[0]*sz[1]:
-      pic=kwargs['value'].reshape(sz[::-1])
-    else:
-      sz=app._camera.update_size()
-      pic=kwargs['value'].reshape(sz[::-1])
-    if pic.dtype==np.int16:
-      pic.dtype=np.uint16
-    camera.epics_cam.set_fiducial(pic, 255)
-    cam._pic=pic
-    cam._timestamp=kwargs['timestamp']
-    try:
-      cam.process()
-    except AttributeError as e:
-      pass
-    # self._goImg.setImage(cam._pic) caused some deadlocks.
-    # therefore try to update the image with signals instead
-    self.sigNewCamImg.emit()
+      app=QApplication.instance()
+      cam=app._camera
+      sz=cam._sz
+      if kwargs['count']==sz[0]*sz[1]:
+        pic=kwargs['value'].reshape(sz[::-1])
+      else:
+        sz=app._camera.update_size()
+        pic=kwargs['value'].reshape(sz[::-1])
+      if pic.dtype==np.int16:
+        pic.dtype=np.uint16
+      camera.epics_cam.set_fiducial(pic, 255)
+      cam._pic=pic
+      cam._timestamp=kwargs['timestamp']
+      try:
+        cam.process()
+      except AttributeError as e:
+        pass
+      # self._goImg.setImage(cam._pic) caused some deadlocks.
+      # therefore try to update the image with signals instead
+      self.sigNewCamImg.emit()
+    except Exception as e:
+      _log.critical(f'{e}')
 
   def cb_update_img(self):
     #thrd=threading.current_thread()
@@ -748,22 +751,43 @@ class WndSwissMx(QMainWindow, Ui_MainWindow):
 
     app=QApplication.instance()
     cam=app._camera
+
     self._goImg.setImage(cam._pic)
     #vb.setRange(QRectF(-1300,-1100,1400,1200))
 
+    #force a segmentation fault
+    #try:
+    #  dbgSegFault=self._dbgSegFault
+    #except AttributeError as e:
+    #  dbgSegFault=self._dbgSegFault=0
+    #_log.warning(f'dbgSegFault:{dbgSegFault}')
+    #if dbgSegFault>100:
+    #  _log.critical('Xforce a segmentation fault')
+    #  import ctypes
+    #  ctypes.string_at(0)
+    #self._dbgSegFault+=1
+
   def cb_new_frame_sim(self, **kwargs):
     app=QApplication.instance()
     sim=app._camera._sim
     imgSeq=sim['imgSeq']
     idx=sim['imgIdx']
-    sim['imgIdx']=(idx+1)%imgSeq.shape[0]
+    sim['imgIdx']=(idx+1)
+    imgIdx=idx%imgSeq.shape[0]
     # _log.info('simulated idx:{}'.format(idx))
-    pic=imgSeq[idx]
+    pic=imgSeq[imgIdx]
     self._goImg.setImage(pic)
 
     delay=500  # ms -> 2fps
     QtCore.QTimer.singleShot(delay, self.cb_new_frame_sim)
 
+    #force a segmentation fault
+    #_log.warning(f'imgIdx:{imgIdx},idx:{idx}')
+    #if idx==20:
+    #  _log.critical('force a segmentation fault')
+    #  import ctypes
+    #  ctypes.string_at(0)
+
   def load_stylesheet(self):
     with open("swissmx.css", "r") as sheet:
       self.setStyleSheet(sheet.read())
@@ -969,6 +993,14 @@ class WndSwissMx(QMainWindow, Ui_MainWindow):
     ]
     qutilities.add_item_to_toolbox(toolbox,"Fast Stage",widget_list=widgets)
 
+    #pv-monitor-func
+    #_log.info('modify monitors')
+    #for w in widgets[1:-1]: #ignore last item
+    #  for k,pv in w._motor._pvs.items():
+    #    pv.auto_monitor=False
+    #  for k,pv in w._motor._pvs.items():
+    #    pv.auto_monitor=True
+
   def build_group_collimator(self, toolbox):
     pfx=QApplication.instance()._cfg.value(AppCfg.GBL_DEV_PREFIX)[1]
     c=QWidget()