Remove nonrecursive decorator

docs/decorators.rst

@@ -2,5 +2,3 @@ Decorators
 ==========
 
 .. autoclass:: gaphas.decorators.g_async
-
-.. autofunction:: gaphas.decorators.nonrecursive

gaphas/canvas.py

@@ -34,7 +34,6 @@
 
 from gaphas import matrix, tree
 from gaphas.connections import Connection, Connections
-from gaphas.decorators import nonrecursive
 from gaphas.item import Item
 from gaphas.model import View
 
@@ -232,7 +231,6 @@ def request_matrix_update(self, item):
         """Schedule only the matrix to be updated."""
         self.request_update(item)
 
-    @nonrecursive
     def update_now(self, dirty_items):
         """Perform an update of the items that requested an update."""
         try:

gaphas/decorators.py

@@ -101,30 +101,3 @@ def async_wrapper(*_args):
                 self.source(async_wrapper).attach()
 
         return wrapper
-
-
-def nonrecursive(func):
-    """Enforce a function or method is not executed recursively:
-
-    >>> class A(object):
-    ...     @nonrecursive
-    ...     def a(self, x=1):
-    ...         print(x)
-    ...         self.a(x+1)
-    >>> A().a()
-    1
-    >>> A().a()
-    1
-    """
-    m = threading.Lock()
-
-    def wrapper(*args, **kwargs):
-        """Decorate function with a mutex that prohibits recursive
-        execution."""
-        if m.acquire(False):
-            try:
-                return func(*args, **kwargs)
-            finally:
-                m.release()
-
-    return wrapper