diff options
Diffstat (limited to 'Lib/multiprocessing')
| -rw-r--r-- | Lib/multiprocessing/__init__.py | 7 | ||||
| -rw-r--r-- | Lib/multiprocessing/forking.py | 22 |
2 files changed, 13 insertions, 16 deletions
diff --git a/Lib/multiprocessing/__init__.py b/Lib/multiprocessing/__init__.py index 1f3e67c..efad532 100644 --- a/Lib/multiprocessing/__init__.py +++ b/Lib/multiprocessing/__init__.py @@ -40,6 +40,13 @@ from multiprocessing.process import Process, current_process, active_children from multiprocessing.util import SUBDEBUG, SUBWARNING # +# Alias for main module -- will be reset by bootstrapping child processes +# + +if '__main__' in sys.modules: + sys.modules['__mp_main__'] = sys.modules['__main__'] + +# # Exceptions # diff --git a/Lib/multiprocessing/forking.py b/Lib/multiprocessing/forking.py index af6580d..fe4ee33 100644 --- a/Lib/multiprocessing/forking.py +++ b/Lib/multiprocessing/forking.py @@ -441,27 +441,17 @@ def prepare(data): dirs = [os.path.dirname(main_path)] assert main_name not in sys.modules, main_name + sys.modules.pop('__mp_main__', None) file, path_name, etc = imp.find_module(main_name, dirs) try: - # We would like to do "imp.load_module('__main__', ...)" - # here. However, that would cause 'if __name__ == - # "__main__"' clauses to be executed. + # We should not do 'imp.load_module("__main__", ...)' + # since that would execute 'if __name__ == "__main__"' + # clauses, potentially causing a psuedo fork bomb. main_module = imp.load_module( - '__parents_main__', file, path_name, etc + '__mp_main__', file, path_name, etc ) finally: if file: file.close() - sys.modules['__main__'] = main_module - main_module.__name__ = '__main__' - - # Try to make the potentially picklable objects in - # sys.modules['__main__'] realize they are in the main - # module -- somewhat ugly. - for obj in list(main_module.__dict__.values()): - try: - if obj.__module__ == '__parents_main__': - obj.__module__ = '__main__' - except Exception: - pass + sys.modules['__main__'] = sys.modules['__mp_main__'] = main_module |