Mercurial > hg > mercurial-crew-with-dirclash
annotate mercurial/lock.py @ 1598:14d1f1868bf6
cleanup of revlog.group when repository is local
revlog.group cached every chunk from the revlog, the behaviour was
needed to minimize the roundtrip with old-http.
We now cache the revlog data ~4MB at a time.
The memory used server side when pulling goes down to 35Mo maximum
whereas without the patch more than 160Mo was used when cloning the linux kernel
repository.
The time used by cloning is higher mainly because of the check in revlog.revision.
before
110.25user 20.90system 2:52.00elapsed 76%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+708707minor)pagefaults 0swaps
after
117.56user 18.86system 2:50.43elapsed 80%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+748366minor)pagefaults 0swaps
| author | Benoit Boissinot <benoit.boissinot@ens-lyon.org> |
|---|---|
| date | Tue, 27 Dec 2005 13:09:49 -0600 |
| parents | 59b3639df0a9 |
| children | e6e70450edb9 |
| rev | line source |
|---|---|
| 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 | |
|
422
10c43444a38e
[PATCH] Enables lock work under the other 'OS'
mpm@selenic.com
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diff
changeset
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9 import util |
| 161 | 10 |
| 11 class LockHeld(Exception): | |
| 12 pass | |
| 13 | |
|
1559
59b3639df0a9
Convert all classes to new-style classes by deriving them from object.
Eric Hopper <hopper@omnifarious.org>
parents:
1530
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changeset
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14 class lock(object): |
|
1530
abfab59fce79
add a releasefn keyword to lock.lock
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1062
diff
changeset
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15 def __init__(self, file, wait=1, releasefn=None): |
| 161 | 16 self.f = file |
| 17 self.held = 0 | |
| 18 self.wait = wait | |
|
1530
abfab59fce79
add a releasefn keyword to lock.lock
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1062
diff
changeset
|
19 self.releasefn = releasefn |
| 161 | 20 self.lock() |
| 21 | |
| 22 def __del__(self): | |
| 23 self.release() | |
| 24 | |
| 25 def lock(self): | |
| 26 while 1: | |
| 27 try: | |
| 28 self.trylock() | |
| 29 return 1 | |
| 30 except LockHeld, inst: | |
| 31 if self.wait: | |
| 32 time.sleep(1) | |
| 33 continue | |
| 34 raise inst | |
| 515 | 35 |
| 161 | 36 def trylock(self): |
| 37 pid = os.getpid() | |
| 38 try: | |
|
422
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[PATCH] Enables lock work under the other 'OS'
mpm@selenic.com
parents:
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diff
changeset
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39 util.makelock(str(pid), self.f) |
| 161 | 40 self.held = 1 |
|
704
5ca319a641e1
Make makelock and readlock work on filesystems without symlink support.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
515
diff
changeset
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41 except (OSError, IOError): |
|
422
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[PATCH] Enables lock work under the other 'OS'
mpm@selenic.com
parents:
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diff
changeset
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42 raise LockHeld(util.readlock(self.f)) |
| 161 | 43 |
| 44 def release(self): | |
| 45 if self.held: | |
| 46 self.held = 0 | |
|
1530
abfab59fce79
add a releasefn keyword to lock.lock
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1062
diff
changeset
|
47 if self.releasefn: |
|
abfab59fce79
add a releasefn keyword to lock.lock
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1062
diff
changeset
|
48 self.releasefn() |
|
503
c6a2e41c8c60
Fix troubles with clone and exception handling
mpm@selenic.com
parents:
429
diff
changeset
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49 try: |
|
c6a2e41c8c60
Fix troubles with clone and exception handling
mpm@selenic.com
parents:
429
diff
changeset
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50 os.unlink(self.f) |
|
c6a2e41c8c60
Fix troubles with clone and exception handling
mpm@selenic.com
parents:
429
diff
changeset
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51 except: pass |
| 161 | 52 |