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v0.8.1
Revision 9b24649118b99987a42fcab0a9793bd5d2b0d762 authored by cvs2svn on 15 August 1997, 20:18:44 UTC, committed by cvs2svn on 15 August 1997, 20:18:44 UTC
1 parent 1fed5b3
Raw File
lockfile.py
import struct, fcntl, FCNTL

def writelock(f):
	_lock(f, FCNTL.F_WRLCK)

def readlock(f):
	_lock(f, FCNTL.F_RDLCK)

def unlock(f):
	_lock(f, FCNTL.F_UNLCK)

def _lock(f, op):
	dummy = fcntl.fcntl(f.fileno(), FCNTL.F_SETLKW,
			    struct.pack('2h8l', op,
					0, 0, 0, 0, 0, 0, 0, 0, 0))
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