Mercurial > public > mercurial-scm > hg-stable
diff mercurial/branchmap.py @ 51651:c0e30a019ce1 stable
mmap: only use mmap to read rev-branch-cache data if it is safe
Cf `is_mmap_safe` docstring.
| author | Pierre-Yves David <pierre-yves.david@octobus.net> |
|---|---|
| date | Wed, 03 Jul 2024 12:31:21 +0200 |
| parents | f02ec1ecb3bf |
| children | f4733654f144 |
line wrap: on
line diff
--- a/mercurial/branchmap.py Wed Jul 03 12:26:57 2024 +0200 +++ b/mercurial/branchmap.py Wed Jul 03 12:31:21 2024 +0200 @@ -1213,11 +1213,12 @@ if self._names: try: - if repo.ui.configbool(b'storage', b'revbranchcache.mmap'): - with repo.cachevfs(_rbcrevs) as fp: + usemmap = repo.ui.configbool(b'storage', b'revbranchcache.mmap') + with repo.cachevfs(_rbcrevs) as fp: + if usemmap and repo.cachevfs.is_mmap_safe(_rbcrevs): data = util.buffer(util.mmapread(fp)) - else: - data = repo.cachevfs.read(_rbcrevs) + else: + data = fp.read() self._rbcrevs = rbcrevs(data) except (IOError, OSError) as inst: repo.ui.debug(