Mercurial > hg
view mercurial/error.py @ 20528:1a9ebc83a74c
win32: improve the performance of win32.unlink() over CIFS
Emulating POSIX unlink() behavior with os.rename() and os.unlink() is often slow
especially over CIFS from Windows clients due to its protocol overhead. This
patch changes win32.unlink() to try first an exclusive open with the Win32
delete-on-close flag, and if a sharing violation is detected, to fall back to
the original emulation.
This patch also removes a test with os.path.isdir() since we expect opening a
directory shall fail as os.unlink() would.
Example measurements (repeated 3-times after 1-time calibration):
(Without this patch: hg update from null to default)
127 files updated, 0 files merged, 0 files removed, 0 files unresolved
time: real 19.871 secs (user 0.328+0.000 sys 1.794+0.000)
time: real 19.622 secs (user 0.312+0.000 sys 2.044+0.000)
time: real 19.138 secs (user 0.250+0.000 sys 1.872+0.000)
(Without this patch: hg update from default to null)
0 files updated, 0 files merged, 127 files removed, 0 files unresolved
time: real 35.158 secs (user 0.156+0.000 sys 2.512+0.000)
time: real 35.272 secs (user 0.250+0.000 sys 2.512+0.000)
time: real 36.569 secs (user 0.203+0.000 sys 2.387+0.000)
(With this patch: hg update from null to default)
127 files updated, 0 files merged, 0 files removed, 0 files unresolved
time: real 17.893 secs (user 0.328+0.000 sys 1.700+0.000)
time: real 18.512 secs (user 0.265+0.000 sys 1.529+0.000)
time: real 20.238 secs (user 0.312+0.000 sys 1.685+0.000)
(With this patch: hg update from default to null)
0 files updated, 0 files merged, 127 files removed, 0 files unresolved
time: real 12.312 secs (user 0.250+0.000 sys 0.811+0.000)
time: real 12.471 secs (user 0.156+0.000 sys 0.889+0.000)
time: real 9.727 secs (user 0.125+0.000 sys 0.858+0.000)
author | Kaz Nishimura <kazssym@vx68k.org> |
---|---|
date | Thu, 17 Oct 2013 13:27:17 +0900 |
parents | 3c224e0949de |
children | 28d76afa1568 |
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# error.py - Mercurial exceptions # # Copyright 2005-2008 Matt Mackall <mpm@selenic.com> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. """Mercurial exceptions. This allows us to catch exceptions at higher levels without forcing imports. """ # Do not import anything here, please class RevlogError(Exception): pass class LookupError(RevlogError, KeyError): def __init__(self, name, index, message): self.name = name if isinstance(name, str) and len(name) == 20: from node import short name = short(name) RevlogError.__init__(self, '%s@%s: %s' % (index, name, message)) def __str__(self): return RevlogError.__str__(self) class ManifestLookupError(LookupError): pass class CommandError(Exception): """Exception raised on errors in parsing the command line.""" class InterventionRequired(Exception): """Exception raised when a command requires human intervention.""" class Abort(Exception): """Raised if a command needs to print an error and exit.""" def __init__(self, *args, **kw): Exception.__init__(self, *args) self.hint = kw.get('hint') class ConfigError(Abort): 'Exception raised when parsing config files' class OutOfBandError(Exception): 'Exception raised when a remote repo reports failure' class ParseError(Exception): 'Exception raised when parsing config files (msg[, pos])' class RepoError(Exception): def __init__(self, *args, **kw): Exception.__init__(self, *args) self.hint = kw.get('hint') class RepoLookupError(RepoError): pass class CapabilityError(RepoError): pass class RequirementError(RepoError): """Exception raised if .hg/requires has an unknown entry.""" pass class LockError(IOError): def __init__(self, errno, strerror, filename, desc): IOError.__init__(self, errno, strerror, filename) self.desc = desc class LockHeld(LockError): def __init__(self, errno, filename, desc, locker): LockError.__init__(self, errno, 'Lock held', filename, desc) self.locker = locker class LockUnavailable(LockError): pass class ResponseError(Exception): """Raised to print an error with part of output and exit.""" class UnknownCommand(Exception): """Exception raised if command is not in the command table.""" class AmbiguousCommand(Exception): """Exception raised if command shortcut matches more than one command.""" # derived from KeyboardInterrupt to simplify some breakout code class SignalInterrupt(KeyboardInterrupt): """Exception raised on SIGTERM and SIGHUP.""" class SignatureError(Exception): pass