Mercurial Repositories > eric / file diff

diff -r 58c7f23ae1cb -r a9134b4e8ed0 src/eric7/ViewManager/ViewManager.py
--- a/src/eric7/ViewManager/ViewManager.py	Sat Apr 20 18:02:35 2024 +0200
+++ b/src/eric7/ViewManager/ViewManager.py	Sat Apr 20 19:56:02 2024 +0200
@@ -147,6 +147,7 @@
         # initialize the file system watcher
         watcher = EricFileSystemWatcher.instance()
         watcher.fileModified.connect(self.__watchedFileChanged)
+        watcher.error.connect(self.__watcherError)
 
         self.__watchedFilePaths = []
 
@@ -5712,7 +5713,8 @@
             newWin, editor = self.getEditor(
                 fn, filetype=filetype, addNext=addNext, indexes=indexes
             )
-        except (OSError, UnicodeDecodeError):
+        except (OSError, UnicodeDecodeError) as err:
+            print(str(err))
             return None
 
         if newWin:
@@ -6107,6 +6109,9 @@
                     filetype=filetype,
                     tv=ericApp().getObject("TaskViewer"),
                 )
+
+                self.addWatchedFilePath(fn)
+
                 editor = assembly.getEditor()
                 self.editors.append(editor)
                 self.__connectEditor(editor)
@@ -6115,8 +6120,6 @@
                 self.editorOpenedEd.emit(editor)
                 self.editorCountChanged.emit(len(self.editors))
 
-                self.addWatchedFilePath(fn)
-
                 newWin = True
 
         if newWin:
@@ -8067,6 +8070,43 @@
             for editor in editorList:
                 editor.recordModificationTime()
 
+    @pyqtSlot(int, str)
+    def __watcherError(self, errno, strerror):
+        """
+        Private slot to handle an error of the file system watcher.
+
+        @param errno numeric error code
+        @type int
+        @param strerror error message as provided by the operating system
+        @type str
+        """
+        if errno == 24:
+            EricMessageBox.critical(
+                self,
+                self.tr("File System Watcher Error"),
+                self.tr(
+                    """<p>The operating system resources for file system watches"""
+                    """ are exhausted. This limit should be increased. On a Linux"""
+                    """ system you should """
+                    """<ul>"""
+                    """<li>sudo nano /etc/sysctl.conf</li>"""
+                    """<li>add to the bottom "fs.inotify.max_user_instances"""
+                    """ = 1024"</li>"""
+                    """<li>save and close the editor</li>"""
+                    """<li>sudo sysctl -p</li>"""
+                    """</ul></p><p>Error Message: {0}</p>"""
+                ).format(strerror),
+            )
+        else:
+            EricMessageBox.critical(
+                self,
+                self.tr("File System Watcher Error"),
+                self.tr(
+                    "The file system watcher reported an error with code <b>{0}</b>."
+                    "</p><p>Error Message: {1}</p>"
+                ).format(errno, strerror)
+            )
+
     def addWatchedFilePath(self, filePath):
         """
         Public method to add a file to the list of monitored files.