Minor annotate performance tweaks
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Minor annotate performance tweaks
manifest hash: 2edd508182c7b3dfb2e0b9b90baebdd364cb29f0
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.0 (GNU/Linux)
iD8DBQFCvfQeywK+sNU5EO8RAsYSAJ0R8SuWnyQxVgauoaEuezOe3Taq/wCbBnEs
+VG0LNrXnQM9khQyc0+pCeg=
=U5gX
-----END PGP SIGNATURE-----
# lock.py - simple locking scheme for mercurial
#
# Copyright 2005 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.
import os, time
import util
class LockHeld(Exception):
pass
class lock:
def __init__(self, file, wait = 1):
self.f = file
self.held = 0
self.wait = wait
self.lock()
def __del__(self):
self.release()
def lock(self):
while 1:
try:
self.trylock()
return 1
except LockHeld, inst:
if self.wait:
time.sleep(1)
continue
raise inst
def trylock(self):
pid = os.getpid()
try:
util.makelock(str(pid), self.f)
self.held = 1
except:
raise LockHeld(util.readlock(self.f))
def release(self):
if self.held:
self.held = 0
os.unlink(self.f)