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Kévin Dunglas
b426776cc7
wrapperFs embeds fs.FS, which hides the StatFS, ReadDirFS and
ReadFileFS methods of the wrapped filesystem. fs.Stat on
DefaultFileSystem did open, fstat and close instead of one stat,
for every fs.Stat in the file matcher and file_server, including the
literal-path case of fs.Glob.
GlobFS is not forwarded: OsFS.Glob uses filepath.Glob, which differs
from fs.Glob (Lstat for literal patterns, OS path separators).
Stat now succeeds on files and directories that cannot be opened, and
no longer blocks on FIFOs. The file matcher matches unreadable files
instead of skipping them, file_server picks an unreadable index file
(403) instead of trying the next one, and browse lists symlinks to
unreadable directories as directories.
BenchmarkFileMatcher, Apple M5 Pro, macOS, count=10:
before after delta
existing file 18.90µs 1.570µs -91.70%
front controller 20.85µs 3.040µs -85.42%
existing file 936 B 728 B 22 -> 18 allocs
front controller 1312 B 1520 B 35 -> 33 allocs