Skip to main content

Browse the archive

Staging
v0.5.1
https://github.com/python/cpython
09 December 2020, 11:06:31 UTC
Revision 670ded8422c6c9b20db7f8025d6a7163ae6e12d2 authored by Guido van Rossum on 09 October 1995, 21:29:13 UTC, committed by Guido van Rossum on 09 October 1995, 21:29:13 UTC 
added some files
1 parent 3ec97e5
Raw File
Tip revision: 670ded8422c6c9b20db7f8025d6a7163ae6e12d2 authored by Guido van Rossum on 09 October 1995, 21:29:13 UTC
added some files
Tip revision: 670ded8
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))
back to top