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e0a4782d31
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 [PATCH] Enables lock work under the other 'OS' From: K Thananchayan <thananck@yahoo.com> os.symlink is not supported under Windows. This patch introduces util.mklockf, util.getlowner that use regular files under Winodws but symlink under unix. tweaked by mpm: - changed function names - fixed to work on UNIX manifest hash: 6f650a78a3b203dcad2f861582500b6b4036599a -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (GNU/Linux) iD8DBQFCuN5sywK+sNU5EO8RAva8AJ9L9z/JHRAJS1bix48ZzSpn9ZUyPwCffhmg UfLSFBmd5tPDDi3mgsrdDEA= =ZYS9 -----END PGP SIGNATURE-----
48 lines
1.0 KiB
Python
48 lines
1.0 KiB
Python
# lock.py - simple locking scheme for mercurial
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#
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# Copyright 2005 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms
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# of the GNU General Public License, incorporated herein by reference.
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import os, time
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import util
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class LockHeld(Exception):
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pass
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class lock:
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def __init__(self, file, wait = 1):
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self.f = file
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self.held = 0
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self.wait = wait
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self.lock()
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def __del__(self):
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self.release()
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def lock(self):
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while 1:
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try:
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self.trylock()
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return 1
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except LockHeld, inst:
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if self.wait:
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time.sleep(1)
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continue
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raise inst
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def trylock(self):
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pid = os.getpid()
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try:
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util.makelock(str(pid), self.f)
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self.held = 1
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except:
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raise LockHeld(util.readlock(self.f))
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def release(self):
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if self.held:
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self.held = 0
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os.unlink(self.f)
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