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v0.8.1
Revision b6aa92ebf178361e821a1ebffdce6b5fcf96bfae authored by Guido van Rossum on 03 February 1995, 12:50:04 UTC, committed by Guido van Rossum on 03 February 1995, 12:50:04 UTC
1 parent 08e767b
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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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