mercurial/lock.py
author mason@suse.com
Tue, 13 Sep 2005 19:32:43 -0500
changeset 1237 227cfbe34109
parent 1062 6d5a62a549fa
child 1530 abfab59fce79
permissions -rw-r--r--
Fix off by one in convert-repo tags --- crew.orig/contrib/convert-repo 2005-07-16 11:52:06.000000000 -0400 +++ crew/contrib/convert-repo 2005-09-02 02:58:14.000000000 -0400 @@ -86,9 +86,7 @@ class convert_git: for f in os.listdir(self.path + "/.git/refs/tags"): try: h = file(self.path + "/.git/refs/tags/" + f).read().strip() - p, a, d, m = self.getcommit(h) - if not p: p = [h] # git is ugly, don't blame me - tags[f] = p[0] + tags[f] = h except: pass return tags -- _______________________________________________ Mercurial mailing list Mercurial@selenic.com http://selenic.com/mailman/listinfo/mercurial

# 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 (OSError, IOError):
            raise LockHeld(util.readlock(self.f))

    def release(self):
        if self.held:
            self.held = 0
            try:
                os.unlink(self.f)
            except: pass