mirror of
https://github.com/Hopiu/linkchecker.git
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6499cb1a63
git-svn-id: https://linkchecker.svn.sourceforge.net/svnroot/linkchecker/trunk/linkchecker@3658 e7d03fd6-7b0d-0410-9947-9c21f3af8025
84 lines
2.4 KiB
Python
84 lines
2.4 KiB
Python
# -*- coding: iso-8859-1 -*-
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# Copyright (C) 2000-2008 Bastian Kleineidam
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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"""
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Support for managing threads.
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"""
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import os
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import threading
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try:
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import win32process
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_has_win32process = True
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except ImportError:
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_has_win32process = False
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# generic thread priorities with mappings to Windows and Unix
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# priority values
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PRIO_HIGH = 0
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PRIO_NORMAL = 1
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PRIO_LOW = 2
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_posix_nice_val = {
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PRIO_HIGH: -5,
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PRIO_NORMAL: +0,
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PRIO_LOW: +10,
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}
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if _has_win32process:
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if hasattr(win32process, "BELOW_NORMAL_PRIORITY_CLASS"):
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_low = win32process.BELOW_NORMAL_PRIORITY_CLASS
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else:
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_low = win32process.IDLE_PRIORITY_CLASS
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if hasattr(win32process, "ABOVE_NORMAL_PRIORITY_CLASS"):
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_high = win32process.ABOVE_NORMAL_PRIORITY_CLASS
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else:
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_high = win32process.HIGH_PRIORITY_CLASS
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_nt_prio_val = {
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PRIO_HIGH: _high,
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PRIO_NORMAL: win32process.NORMAL_PRIORITY_CLASS,
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PRIO_LOW: _low,
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}
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def set_thread_priority (prio):
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"""
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Set priority of this thread (and thus also for all spawned threads).
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"""
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if os.name == 'nt' and _has_win32process:
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res = win32process.SetPriorityClass(
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win32process.GetCurrentProcess(), _nt_prio_val[prio])
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elif os.name == 'posix':
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res = os.nice(_posix_nice_val[prio])
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else:
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res = None
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return res
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class StoppableThread (threading.Thread):
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"""
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Thread class with a stop() method. The thread itself has to check
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regularly for the stopped() condition.
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"""
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def __init__ (self):
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super(StoppableThread, self).__init__()
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self._stop = threading.Event()
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def stop (self):
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self._stop.set()
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def stopped (self):
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return self._stop.isSet()
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