import os

import sys

import time

import errno

from warnings import warn

from multiprocessing.util import Finalize

from rhodecode import __platform__, PLATFORM_WIN

if __platform__ in PLATFORM_WIN:

    import ctypes

        """kill function for Win32"""

        kernel32 = ctypes.windll.kernel32

        handle = kernel32.OpenProcess(1, 0, pid)

        return (0 != kernel32.TerminateProcess(handle, 0))

else:

    kill = os.kill

class LockHeld(Exception):

    pass

class DaemonLock(object):

    """daemon locking

    USAGE:

    try:

        l = DaemonLock(desc='test lock')

        main()

        l.release()

    except LockHeld:

        sys.exit(1)

    """