82 lines
3.4 KiB
Python
82 lines
3.4 KiB
Python
# Autoreloading launcher.
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# Borrowed from Peter Hunt and the CherryPy project (http://www.cherrypy.org).
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# Some taken from Ian Bicking's Paste (http://pythonpaste.org/).
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#
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# Portions copyright (c) 2004, CherryPy Team (team@cherrypy.org)
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without modification,
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# are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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# * Neither the name of the CherryPy Team nor the names of its contributors
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# may be used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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# OR TORT (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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import os, sys, thread, time
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RUN_RELOADER = True
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def reloader_thread():
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mtimes = {}
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win = (sys.platform == "win32")
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while RUN_RELOADER:
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for filename in filter(lambda v: v, map(lambda m: getattr(m, "__file__", None), sys.modules.values())):
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if filename.endswith(".pyc") or filename.endswith("*.pyo"):
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filename = filename[:-1]
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if not os.path.exists(filename):
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continue # File might be in an egg, so it can't be reloaded.
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stat = os.stat(filename)
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mtime = stat.st_mtime
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if win:
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mtime -= stat.st_ctime
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if filename not in mtimes:
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mtimes[filename] = mtime
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continue
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if mtime != mtimes[filename]:
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sys.exit(3) # force reload
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time.sleep(1)
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def restart_with_reloader():
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while True:
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args = [sys.executable] + sys.argv
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if sys.platform == "win32":
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args = ['"%s"' % arg for arg in args]
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new_environ = os.environ.copy()
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new_environ["RUN_MAIN"] = 'true'
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exit_code = os.spawnve(os.P_WAIT, sys.executable, args, new_environ)
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if exit_code != 3:
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return exit_code
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def main(main_func, args=None, kwargs=None):
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if os.environ.get("RUN_MAIN") == "true":
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if args is None:
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args = ()
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if kwargs is None:
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kwargs = {}
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thread.start_new_thread(main_func, args, kwargs)
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try:
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reloader_thread()
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except KeyboardInterrupt:
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pass
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else:
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try:
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sys.exit(restart_with_reloader())
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except KeyboardInterrupt:
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pass
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