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v0.5.1
Revision 5b943ca1a99cede201e73b1b9b92ec7e96a08aea authored by Guido van Rossum on 30 December 1997, 04:29:30 UTC, committed by Guido van Rossum on 30 December 1997, 04:29:30 UTC
1 parent d01e9aa
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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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