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comparison mercurial/pathutil.py @ 44924:233ee525dcef

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grep: reduce the cost of pathauditor checks when grepping working copy Running `time hg grep zxczxczxczxczxc -l` on mozilla-central: before: real 0m20,000s user 0m15,796s sys 0m4,189s after: real 0m10,903s user 0m8,964s sys 0m1,916s if vfs didn't call pathauditor at all: real 0m7,781s user 0m5,968s sys 0m1,790s Differential Revision: https://phab.mercurial-scm.org/D8582
author Valentin Gatien-Baron <valentin.gatienbaron@gmail.com>
date Mon, 25 May 2020 17:39:23 -0400
parents 11f284c8c5e4
children 89a2afe31e82
comparison
equal deleted inserted replaced
44923:06105aa8bc0e 44924:233ee525dcef
1 from __future__ import absolute_import 1 from __future__ import absolute_import
2 2
3 import contextlib
3 import errno 4 import errno
4 import os 5 import os
5 import posixpath 6 import posixpath
6 import stat 7 import stat
7 8
145 try: 146 try:
146 self(path) 147 self(path)
147 return True 148 return True
148 except (OSError, error.Abort): 149 except (OSError, error.Abort):
149 return False 150 return False
151
152 @contextlib.contextmanager
153 def cached(self):
154 if self._cached:
155 yield
156 else:
157 try:
158 self._cached = True
159 yield
160 finally:
161 self.audited.clear()
162 self.auditeddir.clear()
163 self._cached = False
150 164
151 165
152 def canonpath(root, cwd, myname, auditor=None): 166 def canonpath(root, cwd, myname, auditor=None):
153 '''return the canonical path of myname, given cwd and root 167 '''return the canonical path of myname, given cwd and root
154 168