62 lines
2.6 KiB
Python
62 lines
2.6 KiB
Python
# Copyright (c) 2011 Google Inc. All rights reserved.
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# Copyright (C) 2010 Chris Jerdonek (cjerdonek@webkit.org)
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following disclaimer
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# in the documentation and/or other materials provided with the
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# distribution.
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# * Neither the name of Google Inc. nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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"""In order for the multiprocessing module to spawn children correctly on
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Windows, we need to be running a Python module that can be imported
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(which means a file in sys.path that ends in .py). In addition, we need to
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ensure that sys.path / PYTHONPATH is set and propagating correctly.
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This module enforces that."""
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import os
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import subprocess
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import sys
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def run(*parts):
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up = os.path.dirname
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script_dir = up(up(up(os.path.abspath(__file__))))
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env = os.environ
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if 'PYTHONPATH' in env:
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if script_dir not in env['PYTHONPATH']:
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env['PYTHONPATH'] = env['PYTHONPATH'] + os.pathsep + script_dir
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else:
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env['PYTHONPATH'] = script_dir
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module_path = os.path.join(script_dir, *parts)
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cmd = [sys.executable, module_path] + sys.argv[1:]
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proc = subprocess.Popen(cmd, env=env)
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try:
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proc.wait()
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except KeyboardInterrupt:
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# We need a second wait in order to make sure the subprocess exits fully.
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# FIXME: It would be nice if we could put a timeout on this.
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proc.wait()
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sys.exit(proc.returncode)
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