Mercurial > hg > mercurial-crew-with-dirclash
view mercurial/lock.py @ 487:2ad41189bee5
Add initial hook support
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Add initial hook support
This adds the basic hook code as well as pre and post-commit hooks.
Argument passing is by environment variable key/value pairs so that
extra data can be passed over time. File lists will generally not be
passed to hooks as these can be extremely long (>1M).
manifest hash: 45cf9bab432782c391bc9c1c048c84cc75d52740
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.0 (GNU/Linux)
iD8DBQFCwOukywK+sNU5EO8RAsVsAJ9QipR2aKRSSvoRNo+3If6JddUDkwCgkZrM
KEmZpUOxhNHqezFVrHDRTjE=
=aedm
-----END PGP SIGNATURE-----
author | mpm@selenic.com |
---|---|
date | Mon, 27 Jun 2005 22:18:12 -0800 |
parents | 688d03d6997a |
children | c6a2e41c8c60 |
line wrap: on
line source
# 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)