online  h#l=J 2RPmmLZ7 honline 1 #l=J 2RPm2- h0 # li~ Ji?u2\1h m) # # Module providing various facilities to other parts of the package # # multiprocessing/util.py # # Copyright (c) 2006-2008, R Oudkerk # All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # # 1. Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # 3. Neither the name of author nor the names of any contributors may be # used to endorse or promote products derived from this software # without specific prior written permission. # # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF # SUCH DAMAGE. # import itertools import weakref import atexit import threading # we want threading to install it's # cleanup function before multiprocessing does from subprocess import _args_from_interpreter_flags from multiprocessing.process import current_process, active_children __all__ = [ 'sub_debug', 'debug', 'info', 'sub_warning', 'get_logger', 'log_to_stderr', 'get_temp_dir', 'register_after_fork', 'is_exiting', 'Finalize', 'ForkAwareThreadLock', 'ForkAwareLocal', 'SUBDEBUG', 'SUBWARNING', ] # # Logging # NOTSET = 0 SUBDEBUG = 5 DEBUG = 10 INFO = 20 SUBWARNING = 25 LOGGER_NAME = 'multiprocessing' DEFAULT_LOGGING_FORMAT = '[%(levelname)s/%(processName)s] %(message)s' _logger = None _log_to_stderr = False def sub_debug(msg, *args): if _logger: _logger.log(SUBDEBUG, msg, *args) def debug(msg, *args): if _logger: _logger.log(DEBUG, msg, *args) def info(msg, *args): if _logger: _logger.log(INFO, msg, *args) def sub_warning(msg, *args): if _logger: _logger.log(SUBWARNING, msg, *args) def get_logger(): ''' Returns logger used by multiprocessing ''' global _logger import logging, atexit logging._acquireLock() try: if not _logger: _logger = logging.getLogger(LOGGER_NAME) _logger.propagate = 0 logging.addLevelName(SUBDEBUG, 'SUBDEBUG') logging.addLevelName(SUBWARNING, 'SUBWARNING') # XXX multiprocessing should cleanup before logging if hasattr(atexit, 'unregister'): atexit.unregister(_exit_function) atexit.register(_exit_function) else: atexit._exithandlers.remove((_exit_function, (), {})) atexit._exithandlers.append((_exit_function, (), {})) finally: logging._releaseLock() return _logger def log_to_stderr(level=None): ''' Turn on logging and add a handler which prints to stderr ''' global _log_to_stderr import logging logger = get_logger() formatter = logging.Formatter(DEFAULT_LOGGING_FORMAT) handler = logging.StreamHandler() handler.setFormatter(formatter) logger.addHandler(handler) if level: