Imported from SVN by Bitbucket

Paste-1.7.5.1-py2.6.egg/paste/util/threadinglocal.py

@@ -0,0 +1,43 @@
+# (c) 2005 Ian Bicking and contributors; written for Paste (http://pythonpaste.org)
+# Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php
+"""
+Implementation of thread-local storage, for Python versions that don't
+have thread local storage natively.
+"""
+
+try:
+    import threading
+except ImportError:
+    # No threads, so "thread local" means process-global
+    class local(object):
+        pass
+else:
+    try:
+        local = threading.local
+    except AttributeError:
+        # Added in 2.4, but now we'll have to define it ourselves
+        import thread
+        class local(object):
+
+            def __init__(self):
+                self.__dict__['__objs'] = {}
+
+            def __getattr__(self, attr, g=thread.get_ident):
+                try:
+                    return self.__dict__['__objs'][g()][attr]
+                except KeyError:
+                    raise AttributeError(
+                        "No variable %s defined for the thread %s"
+                        % (attr, g()))
+
+            def __setattr__(self, attr, value, g=thread.get_ident):
+                self.__dict__['__objs'].setdefault(g(), {})[attr] = value
+
+            def __delattr__(self, attr, g=thread.get_ident):
+                try:
+                    del self.__dict__['__objs'][g()][attr]
+                except KeyError:
+                    raise AttributeError(
+                        "No variable %s defined for thread %s"
+                        % (attr, g()))
+