diff -r 799196d0b05d -r 12ebd3934fef eric7/EricUtilities/EricMutexLocker.py
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/eric7/EricUtilities/EricMutexLocker.py Sat May 22 16:52:45 2021 +0200
@@ -0,0 +1,50 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2020 - 2021 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing a context manager locking and unlocking a mutex.
+"""
+
+import contextlib
+
+
+class EricMutexLocker(contextlib.AbstractContextManager):
+ """
+ Class implementing a context manager locking and unlocking a mutex.
+ """
+ def __init__(self, mutex):
+ """
+ Constructor
+
+ @param mutex reference to the mutex to be locked
+ @type QMutex or QRecursiveMutex
+ """
+ self.__mutex = mutex
+
+ def __enter__(self):
+ """
+ Special method called when entering the runtime ccontext.
+
+ @return reference to the context manager object
+ @rtype E5OverrideCursor
+ """
+ self.__mutex.lock()
+
+ return self
+
+ def __exit__(self, exc_type, exc_value, traceback):
+ """
+ Special method called when exiting the runtime ccontext.
+
+ @param exc_type type of an exception raised in the runtime context
+ @param exc_value value of an exception raised in the runtime context
+ @param traceback traceback of an exception raised in the runtime
+ context
+ @return always returns None to not suppress any exception
+ @rtype None
+ """
+ self.__mutex.unlock()
+
+ return None # __IGNORE_WARNING_M831__
