Move file writes and reads to separate thread

src/util/ThreadPool.py

@@ -0,0 +1,22 @@
+import gevent.threadpool
+
+
+class ThreadPool:
+    def __init__(self, max_size):
+        self.setMaxSize(max_size)
+
+    def setMaxSize(self, max_size):
+        self.max_size = max_size
+        if max_size > 0:
+            self.pool = gevent.threadpool.ThreadPool(max_size)
+        else:
+            self.pool = None
+
+    def wrap(self, func):
+        if self.pool is None:
+            return func
+
+        def wrapper(*args, **kwargs):
+            return self.pool.apply(func, args, kwargs)
+
+        return wrapper