update xlib

xlib/mt/AtomicInteger.py

@@ -0,0 +1,23 @@
+import threading
+
+class AtomicInteger:
+    def __init__(self, value=0):
+        self._value = int(value)
+        self._lock = threading.Lock()
+        
+    def inc(self, d = 1):
+        with self._lock:
+            self._value += int(d)
+            return self._value
+
+    def dec(self, d = 1):
+        return self.inc(-d)    
+
+    def get_value(self) -> int:
+        with self._lock:
+            return self._value
+
+    def set_value(self, v : int):
+        with self._lock:
+            self._value = int(v)
+            return self._value

xlib/mt/__init__.py

@@ -2,4 +2,5 @@
 various threading extensions
 """
 
-from .MTOrderedData import MTOrderedData
+from .AtomicInteger import AtomicInteger
+from .MTOrderedData import MTOrderedData