Coverage for /Users/virantha/dev/ocr/pypdfocr/pypdfocr_multiprocessing : 72%

#!/usr/bin/env python2.7 

# Copyright 2013 Virantha Ekanayake All Rights Reserved. 

# 

# Licensed under the Apache License, Version 2.0 (the "License"); 

# you may not use this file except in compliance with the License. 

# You may obtain a copy of the License at 

# 

#    http://www.apache.org/licenses/LICENSE-2.0 

# 

# Unless required by applicable law or agreed to in writing, software 

# distributed under the License is distributed on an "AS IS" BASIS, 

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 

# See the License for the specific language governing permissions and 

# limitations under the License. 

import sys, os, multiprocessing.forking 

import logging 

""" Special work-around to support multiprocessing and pyinstaller --onefile on windows systms 

    https://github.com/pyinstaller/pyinstaller/wiki/Recipe-Multiprocessing 

""" 

import multiprocessing.forking as forking 

import os 

import sys 

class _Popen(multiprocessing.forking.Popen): 

    def __init__(self, *args, **kw): 

        if hasattr(sys, 'frozen'): 

            # We have to set original _MEIPASS2 value from sys._MEIPASS 

            # to get --onefile mode working. 

            os.putenv('_MEIPASS2', sys._MEIPASS) 

        try: 

            super(_Popen, self).__init__(*args, **kw) 

        finally: 

            if hasattr(sys, 'frozen'): 

                # On some platforms (e.g. AIX) 'os.unsetenv()' is not 

                # available. In those cases we cannot delete the variable 

                # but only set it to the empty string. The bootloader 

                # can handle this case. 

                if hasattr(os, 'unsetenv'): 

                    os.unsetenv('_MEIPASS2') 

                else: 

                    os.putenv('_MEIPASS2', '') 

forking.Popen = _Popen 

#class Process(multiprocessing.Process): 

    #_Popen = _Popen 

# ... 

if __name__ == '__main__': 

    # On Windows calling this function is necessary. 

    multiprocessing.freeze_support()