Mercurial > hg > mercurial-crew-with-dirclash
annotate mercurial/lock.py @ 822:b678e6d4f92d
Attempt to yield names in sorted order when walking.
This is an improvement in behaviour, but the walk and changes code still
has some flaws that make sorted name presentation difficult:
- changes returns tuples of names, instead of a sorted list of (name,
status) pairs.
- walk yields deleted names after all others.
author | Bryan O'Sullivan <bos@serpentine.com> |
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date | Sun, 31 Jul 2005 18:03:46 -0800 |
parents | 574869103985 |
children | 6d5a62a549fa |
rev | line source |
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161 | 1 # lock.py - simple locking scheme for mercurial |
2 # | |
3 # Copyright 2005 Matt Mackall <mpm@selenic.com> | |
4 # | |
5 # This software may be used and distributed according to the terms | |
6 # of the GNU General Public License, incorporated herein by reference. | |
7 | |
8 import os, time | |
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[PATCH] Enables lock work under the other 'OS'
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9 import util |
161 | 10 |
11 class LockHeld(Exception): | |
12 pass | |
13 | |
14 class lock: | |
15 def __init__(self, file, wait = 1): | |
16 self.f = file | |
17 self.held = 0 | |
18 self.wait = wait | |
19 self.lock() | |
20 | |
21 def __del__(self): | |
22 self.release() | |
23 | |
24 def lock(self): | |
25 while 1: | |
26 try: | |
27 self.trylock() | |
28 return 1 | |
29 except LockHeld, inst: | |
30 if self.wait: | |
31 time.sleep(1) | |
32 continue | |
33 raise inst | |
515 | 34 |
161 | 35 def trylock(self): |
36 pid = os.getpid() | |
37 try: | |
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38 util.makelock(str(pid), self.f) |
161 | 39 self.held = 1 |
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5ca319a641e1
Make makelock and readlock work on filesystems without symlink support.
Thomas Arendsen Hein <thomas@intevation.de>
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40 except (OSError, IOError): |
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41 raise LockHeld(util.readlock(self.f)) |
161 | 42 |
43 def release(self): | |
44 if self.held: | |
45 self.held = 0 | |
503
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Fix troubles with clone and exception handling
mpm@selenic.com
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46 try: |
c6a2e41c8c60
Fix troubles with clone and exception handling
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47 os.unlink(self.f) |
c6a2e41c8c60
Fix troubles with clone and exception handling
mpm@selenic.com
parents:
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48 except: pass |
161 | 49 |