threadlocal backward-compatibility module

1 files changed, 35 insertions, 0 deletions

diff --git a/paste/util/threadinglocal.py b/paste/util/threadinglocal.py
new file mode 100644
index 0000000..48559e8
--- /dev/null
+++ b/paste/util/threadinglocal.py
@@ -0,0 +1,35 @@
+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()))