Mercurial > hg
annotate mercurial/lock.py @ 16719:e7bf09acd410
localrepo: add branchtip() method for faster single-branch lookups
For the PyPy repo with 744 branches and 843 branch heads, this brings
hg log -r default over NFS from:
CallCount Recursive Total(ms) Inline(ms) module:lineno(function)
3249 0 1.3222 1.3222 <open>
3244 0 0.6211 0.6211 <method 'close' of 'file' objects>
3243 0 0.0800 0.0800 <method 'read' of 'file' objects>
3241 0 0.0660 0.0660 <method 'seek' of 'file' objects>
3905 0 0.0476 0.0476 <zlib.decompress>
3281 0 2.6756 0.0472 mercurial.changelog:182(read)
+3281 0 2.5256 0.0453 +mercurial.revlog:881(revision)
+3276 0 0.0389 0.0196 +mercurial.changelog:28(decodeextra)
+6562 0 0.0123 0.0123 +<method 'split' of 'str' objects>
+6562 0 0.0408 0.0073 +mercurial.encoding:61(tolocal)
+3281 0 0.0054 0.0054 +<method 'index' of 'str' objects>
3241 0 2.2464 0.0456 mercurial.revlog:818(_loadchunk)
+3241 0 0.6205 0.6205 +<method 'close' of 'file' objects>
+3241 0 0.0765 0.0765 +<method 'read' of 'file' objects>
+3241 0 0.0660 0.0660 +<method 'seek' of 'file' objects>
+3241 0 1.4209 0.0135 +mercurial.store:374(__call__)
+3241 0 0.0122 0.0107 +mercurial.revlog:810(_addchunk)
3281 0 2.5256 0.0453 mercurial.revlog:881(revision)
+3280 0 0.0175 0.0175 +mercurial.revlog:305(rev)
+3281 0 2.2819 0.0119 +mercurial.revlog:847(_chunkraw)
+3281 0 0.0603 0.0083 +mercurial.revlog:945(_checkhash)
+3281 0 0.0051 0.0051 +mercurial.revlog:349(flags)
+3281 0 0.0040 0.0040 +<mercurial.mpatch.patches>
13682 0 0.0479 0.0248 <method 'decode' of 'str' objects>
+7418 0 0.0228 0.0076 +encodings.utf_8:15(decode)
+1 0 0.0003 0.0000 +encodings:71(search_function)
3248 0 1.3995 0.0246 mercurial.scmutil:218(__call__)
+3248 0 1.3222 1.3222 +<open>
+3248 0 0.0235 0.0184 +os.path:80(split)
+3248 0 0.0084 0.0068 +mercurial.scmutil:92(__call__)
Time: real 2.750 secs (user 0.680+0.000 sys 0.360+0.000)
down to:
CallCount Recursive Total(ms) Inline(ms) module:lineno(function)
55 31 0.0197 0.0163 <__import__>
+1 0 0.0006 0.0002 +mercurial.context:8(<module>)
+1 0 0.0042 0.0001 +mercurial.revlog:12(<module>)
+1 0 0.0002 0.0001 +mercurial.match:8(<module>)
+1 0 0.0003 0.0001 +mercurial.dirstate:7(<module>)
+1 0 0.0057 0.0001 +mercurial.changelog:8(<module>)
1 0 0.0117 0.0032 mercurial.localrepo:525(_readbranchcache)
+844 0 0.0015 0.0015 +<binascii.unhexlify>
+845 0 0.0010 0.0010 +<method 'split' of 'str' objects>
+843 0 0.0045 0.0009 +mercurial.encoding:61(tolocal)
+843 0 0.0004 0.0004 +<method 'setdefault' of 'dict' objects>
+1 0 0.0003 0.0003 +<method 'close' of 'file' objects>
3 0 0.0029 0.0029 <method 'read' of 'file' objects>
9 0 0.0018 0.0018 <open>
990 0 0.0017 0.0017 <binascii.unhexlify>
53 0 0.0016 0.0016 mercurial.demandimport:43(__init__)
862 0 0.0015 0.0015 <_codecs.utf_8_decode>
862 0 0.0037 0.0014 <method 'decode' of 'str' objects>
+862 0 0.0023 0.0008 +encodings.utf_8:15(decode)
981 0 0.0011 0.0011 <method 'split' of 'str' objects>
861 0 0.0046 0.0009 mercurial.encoding:61(tolocal)
+861 0 0.0037 0.0014 +<method 'decode' of 'str' objects>
862 0 0.0023 0.0008 encodings.utf_8:15(decode)
+862 0 0.0015 0.0015 +<_codecs.utf_8_decode>
4 0 0.0008 0.0008 <method 'close' of 'file' objects>
179 154 0.0202 0.0004 mercurial.demandimport:83(__getattribute__)
+36 11 0.0199 0.0003 +mercurial.demandimport:55(_load)
+72 0 0.0001 0.0001 +mercurial.demandimport:83(__getattribute__)
+36 0 0.0000 0.0000 +<getattr>
1 0 0.0015 0.0004 mercurial.tags:148(_readtagcache)
Time: real 0.060 secs (user 0.030+0.000 sys 0.010+0.000)
author | Brodie Rao <brodie@sf.io> |
---|---|
date | Sun, 13 May 2012 14:04:04 +0200 |
parents | cc24e4ed3e0c |
children | e7cfe3587ea4 7c44b703657b 829919ef894a |
rev | line source |
---|---|
9309
cfdcb7a465af
localrepo: document the locking scheme a little better
Greg Ward <greg-hg@gerg.ca>
parents:
8312
diff
changeset
|
1 # lock.py - simple advisory locking scheme for mercurial |
161 | 2 # |
2859 | 3 # Copyright 2005, 2006 Matt Mackall <mpm@selenic.com> |
161 | 4 # |
8225
46293a0c7e9f
updated license to be explicit about GPL version 2
Martin Geisler <mg@lazybytes.net>
parents:
8113
diff
changeset
|
5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
161 | 7 |
8312
b87a50b7125c
separate import lines from mercurial and general python modules
Simon Heimberg <simohe@besonet.ch>
parents:
8225
diff
changeset
|
8 import util, error |
b87a50b7125c
separate import lines from mercurial and general python modules
Simon Heimberg <simohe@besonet.ch>
parents:
8225
diff
changeset
|
9 import errno, os, socket, time |
8113
87a1605979e4
add a deprecation warning for gc based lock releasing
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
8108
diff
changeset
|
10 import warnings |
161 | 11 |
1559
59b3639df0a9
Convert all classes to new-style classes by deriving them from object.
Eric Hopper <hopper@omnifarious.org>
parents:
1530
diff
changeset
|
12 class lock(object): |
9309
cfdcb7a465af
localrepo: document the locking scheme a little better
Greg Ward <greg-hg@gerg.ca>
parents:
8312
diff
changeset
|
13 '''An advisory lock held by one process to control access to a set |
cfdcb7a465af
localrepo: document the locking scheme a little better
Greg Ward <greg-hg@gerg.ca>
parents:
8312
diff
changeset
|
14 of files. Non-cooperating processes or incorrectly written scripts |
cfdcb7a465af
localrepo: document the locking scheme a little better
Greg Ward <greg-hg@gerg.ca>
parents:
8312
diff
changeset
|
15 can ignore Mercurial's locking scheme and stomp all over the |
cfdcb7a465af
localrepo: document the locking scheme a little better
Greg Ward <greg-hg@gerg.ca>
parents:
8312
diff
changeset
|
16 repository, so don't do that. |
cfdcb7a465af
localrepo: document the locking scheme a little better
Greg Ward <greg-hg@gerg.ca>
parents:
8312
diff
changeset
|
17 |
cfdcb7a465af
localrepo: document the locking scheme a little better
Greg Ward <greg-hg@gerg.ca>
parents:
8312
diff
changeset
|
18 Typically used via localrepository.lock() to lock the repository |
cfdcb7a465af
localrepo: document the locking scheme a little better
Greg Ward <greg-hg@gerg.ca>
parents:
8312
diff
changeset
|
19 store (.hg/store/) or localrepository.wlock() to lock everything |
cfdcb7a465af
localrepo: document the locking scheme a little better
Greg Ward <greg-hg@gerg.ca>
parents:
8312
diff
changeset
|
20 else under .hg/.''' |
cfdcb7a465af
localrepo: document the locking scheme a little better
Greg Ward <greg-hg@gerg.ca>
parents:
8312
diff
changeset
|
21 |
1877
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
22 # lock is symlink on platforms that support it, file on others. |
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
23 |
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
24 # symlink is used because create of directory entry and contents |
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
25 # are atomic even over nfs. |
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
26 |
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
27 # old-style lock: symlink to pid |
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
28 # new-style lock: symlink to hostname:pid |
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
29 |
4947
3e25a6eb5c9a
lock.py: cache hostname, but not pid, in case we fork
Bryan O'Sullivan <bos@serpentine.com>
parents:
3877
diff
changeset
|
30 _host = None |
3e25a6eb5c9a
lock.py: cache hostname, but not pid, in case we fork
Bryan O'Sullivan <bos@serpentine.com>
parents:
3877
diff
changeset
|
31 |
2016
ff5c9a92f556
fix backtrace printed when cannot get lock.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1877
diff
changeset
|
32 def __init__(self, file, timeout=-1, releasefn=None, desc=None): |
161 | 33 self.f = file |
34 self.held = 0 | |
1787
e431344e604c
add a timeout when a lock is held (default 1024 sec)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1753
diff
changeset
|
35 self.timeout = timeout |
1530
abfab59fce79
add a releasefn keyword to lock.lock
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1062
diff
changeset
|
36 self.releasefn = releasefn |
2016
ff5c9a92f556
fix backtrace printed when cannot get lock.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1877
diff
changeset
|
37 self.desc = desc |
15589
cc24e4ed3e0c
lock: change name of release chain
Matt Mackall <mpm@selenic.com>
parents:
15583
diff
changeset
|
38 self.postrelease = [] |
161 | 39 self.lock() |
40 | |
41 def __del__(self): | |
8108
a26d33749bd8
made repo locks recursive and deprecate refcounting based lock releasing
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
7640
diff
changeset
|
42 if self.held: |
8113
87a1605979e4
add a deprecation warning for gc based lock releasing
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
8108
diff
changeset
|
43 warnings.warn("use lock.release instead of del lock", |
87a1605979e4
add a deprecation warning for gc based lock releasing
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
8108
diff
changeset
|
44 category=DeprecationWarning, |
87a1605979e4
add a deprecation warning for gc based lock releasing
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
8108
diff
changeset
|
45 stacklevel=2) |
87a1605979e4
add a deprecation warning for gc based lock releasing
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
8108
diff
changeset
|
46 |
8108
a26d33749bd8
made repo locks recursive and deprecate refcounting based lock releasing
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
7640
diff
changeset
|
47 # ensure the lock will be removed |
a26d33749bd8
made repo locks recursive and deprecate refcounting based lock releasing
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
7640
diff
changeset
|
48 # even if recursive locking did occur |
a26d33749bd8
made repo locks recursive and deprecate refcounting based lock releasing
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
7640
diff
changeset
|
49 self.held = 1 |
a26d33749bd8
made repo locks recursive and deprecate refcounting based lock releasing
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
7640
diff
changeset
|
50 |
161 | 51 self.release() |
52 | |
53 def lock(self): | |
1787
e431344e604c
add a timeout when a lock is held (default 1024 sec)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1753
diff
changeset
|
54 timeout = self.timeout |
14494
1ffeeb91c55d
check-code: flag 0/1 used as constant Boolean expression
Martin Geisler <mg@lazybytes.net>
parents:
13281
diff
changeset
|
55 while True: |
161 | 56 try: |
57 self.trylock() | |
58 return 1 | |
7640 | 59 except error.LockHeld, inst: |
1787
e431344e604c
add a timeout when a lock is held (default 1024 sec)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1753
diff
changeset
|
60 if timeout != 0: |
161 | 61 time.sleep(1) |
1787
e431344e604c
add a timeout when a lock is held (default 1024 sec)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1753
diff
changeset
|
62 if timeout > 0: |
e431344e604c
add a timeout when a lock is held (default 1024 sec)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1753
diff
changeset
|
63 timeout -= 1 |
161 | 64 continue |
7640 | 65 raise error.LockHeld(errno.ETIMEDOUT, inst.filename, self.desc, |
66 inst.locker) | |
515 | 67 |
161 | 68 def trylock(self): |
8108
a26d33749bd8
made repo locks recursive and deprecate refcounting based lock releasing
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
7640
diff
changeset
|
69 if self.held: |
a26d33749bd8
made repo locks recursive and deprecate refcounting based lock releasing
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
7640
diff
changeset
|
70 self.held += 1 |
a26d33749bd8
made repo locks recursive and deprecate refcounting based lock releasing
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
7640
diff
changeset
|
71 return |
4947
3e25a6eb5c9a
lock.py: cache hostname, but not pid, in case we fork
Bryan O'Sullivan <bos@serpentine.com>
parents:
3877
diff
changeset
|
72 if lock._host is None: |
3e25a6eb5c9a
lock.py: cache hostname, but not pid, in case we fork
Bryan O'Sullivan <bos@serpentine.com>
parents:
3877
diff
changeset
|
73 lock._host = socket.gethostname() |
4959
8933b8ea871a
Use format string for lockname again (was changed by 3e25a6eb5c9a)
Thomas Arendsen Hein <thomas@intevation.de>
parents:
4947
diff
changeset
|
74 lockname = '%s:%s' % (lock._host, os.getpid()) |
1877
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
75 while not self.held: |
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
76 try: |
4947
3e25a6eb5c9a
lock.py: cache hostname, but not pid, in case we fork
Bryan O'Sullivan <bos@serpentine.com>
parents:
3877
diff
changeset
|
77 util.makelock(lockname, self.f) |
1877
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
78 self.held = 1 |
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
79 except (OSError, IOError), why: |
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
80 if why.errno == errno.EEXIST: |
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
81 locker = self.testlock() |
3686
4308f4cdc07b
Don't step into an endless loop when lock file is empty.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
2859
diff
changeset
|
82 if locker is not None: |
7640 | 83 raise error.LockHeld(errno.EAGAIN, self.f, self.desc, |
84 locker) | |
1877
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
85 else: |
7640 | 86 raise error.LockUnavailable(why.errno, why.strerror, |
87 why.filename, self.desc) | |
1877
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
88 |
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
89 def testlock(self): |
3686
4308f4cdc07b
Don't step into an endless loop when lock file is empty.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
2859
diff
changeset
|
90 """return id of locker if lock is valid, else None. |
4308f4cdc07b
Don't step into an endless loop when lock file is empty.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
2859
diff
changeset
|
91 |
4308f4cdc07b
Don't step into an endless loop when lock file is empty.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
2859
diff
changeset
|
92 If old-style lock, we cannot tell what machine locker is on. |
4308f4cdc07b
Don't step into an endless loop when lock file is empty.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
2859
diff
changeset
|
93 with new-style lock, if locker is on this machine, we can |
4308f4cdc07b
Don't step into an endless loop when lock file is empty.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
2859
diff
changeset
|
94 see if locker is alive. If locker is on this machine but |
4308f4cdc07b
Don't step into an endless loop when lock file is empty.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
2859
diff
changeset
|
95 not alive, we can safely break lock. |
4308f4cdc07b
Don't step into an endless loop when lock file is empty.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
2859
diff
changeset
|
96 |
4308f4cdc07b
Don't step into an endless loop when lock file is empty.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
2859
diff
changeset
|
97 The lock file is only deleted when None is returned. |
4308f4cdc07b
Don't step into an endless loop when lock file is empty.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
2859
diff
changeset
|
98 |
4308f4cdc07b
Don't step into an endless loop when lock file is empty.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
2859
diff
changeset
|
99 """ |
1877
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
100 locker = util.readlock(self.f) |
2579
0875cda033fd
use __contains__, index or split instead of str.find
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
2016
diff
changeset
|
101 try: |
0875cda033fd
use __contains__, index or split instead of str.find
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
2016
diff
changeset
|
102 host, pid = locker.split(":", 1) |
0875cda033fd
use __contains__, index or split instead of str.find
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
2016
diff
changeset
|
103 except ValueError: |
1877
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
104 return locker |
4947
3e25a6eb5c9a
lock.py: cache hostname, but not pid, in case we fork
Bryan O'Sullivan <bos@serpentine.com>
parents:
3877
diff
changeset
|
105 if host != lock._host: |
1877
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
106 return locker |
161 | 107 try: |
2579
0875cda033fd
use __contains__, index or split instead of str.find
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
2016
diff
changeset
|
108 pid = int(pid) |
9685
a820cd39d415
lock: catch specific exceptions
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
9680
diff
changeset
|
109 except ValueError: |
1877
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
110 return locker |
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
111 if util.testpid(pid): |
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
112 return locker |
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
113 # if locker dead, break lock. must do this with another lock |
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
114 # held, or can race and break valid lock. |
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
115 try: |
9858
ea38a2c1bdd3
lock: the correct way to do a trylock() is to use a timeout of 0
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
9685
diff
changeset
|
116 l = lock(self.f + '.break', timeout=0) |
13281
95de08ffa324
lock: use util.unlink (issue2537)
Adrian Buehlmann <adrian@cadifra.com>
parents:
10263
diff
changeset
|
117 util.unlink(self.f) |
1877
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
118 l.release() |
7640 | 119 except error.LockError: |
1877
d314a89fa4f1
change lock format to let us detect and break stale locks.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1836
diff
changeset
|
120 return locker |
161 | 121 |
122 def release(self): | |
15583
926a06f7a353
lock: add mechanism to register post release callback
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
14494
diff
changeset
|
123 """release the lock and execute callback function if any |
926a06f7a353
lock: add mechanism to register post release callback
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
14494
diff
changeset
|
124 |
926a06f7a353
lock: add mechanism to register post release callback
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
14494
diff
changeset
|
125 If the lock have been aquired multiple time, the actual release is |
926a06f7a353
lock: add mechanism to register post release callback
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
14494
diff
changeset
|
126 delayed to the last relase call.""" |
8108
a26d33749bd8
made repo locks recursive and deprecate refcounting based lock releasing
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
7640
diff
changeset
|
127 if self.held > 1: |
a26d33749bd8
made repo locks recursive and deprecate refcounting based lock releasing
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
7640
diff
changeset
|
128 self.held -= 1 |
9680
8cea86d73887
lock: use '==' instead of 'is' for integer equality ('is' may not work)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
9309
diff
changeset
|
129 elif self.held == 1: |
161 | 130 self.held = 0 |
1530
abfab59fce79
add a releasefn keyword to lock.lock
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1062
diff
changeset
|
131 if self.releasefn: |
abfab59fce79
add a releasefn keyword to lock.lock
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1062
diff
changeset
|
132 self.releasefn() |
503
c6a2e41c8c60
Fix troubles with clone and exception handling
mpm@selenic.com
parents:
429
diff
changeset
|
133 try: |
13281
95de08ffa324
lock: use util.unlink (issue2537)
Adrian Buehlmann <adrian@cadifra.com>
parents:
10263
diff
changeset
|
134 util.unlink(self.f) |
9685
a820cd39d415
lock: catch specific exceptions
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
9680
diff
changeset
|
135 except OSError: |
a820cd39d415
lock: catch specific exceptions
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
9680
diff
changeset
|
136 pass |
15589
cc24e4ed3e0c
lock: change name of release chain
Matt Mackall <mpm@selenic.com>
parents:
15583
diff
changeset
|
137 for callback in self.postrelease: |
15583
926a06f7a353
lock: add mechanism to register post release callback
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
14494
diff
changeset
|
138 callback() |
161 | 139 |
8108
a26d33749bd8
made repo locks recursive and deprecate refcounting based lock releasing
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
7640
diff
changeset
|
140 def release(*locks): |
a26d33749bd8
made repo locks recursive and deprecate refcounting based lock releasing
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
7640
diff
changeset
|
141 for lock in locks: |
a26d33749bd8
made repo locks recursive and deprecate refcounting based lock releasing
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
7640
diff
changeset
|
142 if lock is not None: |
a26d33749bd8
made repo locks recursive and deprecate refcounting based lock releasing
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
7640
diff
changeset
|
143 lock.release() |