use lock to avoid reloading portal type classes in one thread while

the other one loads them


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@40754 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/dynamic/lazy_class.py

@@ -159,7 +159,9 @@ class PortalTypeMetaClass(ExtensionClass):
       raise AttributeError("Could not find a portal type class in"
                            " class hierarchy")
 
+    ERP5Base.aq_method_lock.acquire()
     portal_type = klass.__name__
+    try:
       try:
         class_definition = generatePortalTypeClass(portal_type)
       except AttributeError:
@@ -187,6 +189,8 @@ class PortalTypeMetaClass(ExtensionClass):
       klass.resetAcquisitionAndSecurity()
       for interface in interface_list:
         classImplements(klass, interface)
+    finally:
+      ERP5Base.aq_method_lock.release()
 
 def generateLazyPortalTypeClass(portal_type_name):
   return PortalTypeMetaClass(portal_type_name, (GhostPortalType,), {})

product/ERP5Type/dynamic/portal_type_class.py

@@ -33,7 +33,7 @@ from types import ModuleType
 
 from dynamic_module import registerDynamicModule
 
-from Products.ERP5Type.Base import _aq_reset
+from Products.ERP5Type.Base import _aq_reset, Base
 from Products.ERP5Type.Globals import InitializeClass
 from Products.ERP5Type.Utils import setDefaultClassProperties
 from Products.ERP5Type import document_class_registry, mixin_class_registry
@@ -371,9 +371,13 @@ def synchronizeDynamicModules(context, force=False):
 
   import erp5
 
+  Base.aq_method_lock.acquire()
+  try:
     for class_name, klass in inspect.getmembers(erp5.portal_type,
                                                 inspect.isclass):
       klass.restoreGhostState()
+  finally:
+    Base.aq_method_lock.release()
 
   # Clear accessor holders of ZODB Property Sheets
   for property_sheet_id in erp5.accessor_holder.__dict__.keys():