Mercurial > hg
view tests/test-lfs-pointer.py @ 40684:e6c9ef5e11a0
match: provide and use a quick way to escape a single byte
The previous function has a lot of overhead (including being a function). In
the `_globre` case, we always escape a single byte. So we provide a dictionary
dedicated to this use case. We directly use the dictionary to avoid a function
call, these are expensive in Python.
Again, this raise a very significant performance gain:
Before: ! wall 0.059793 comb 0.060000 user 0.060000 sys 0.000000 (median of 100)
After: ! wall 0.020390 comb 0.020000 user 0.020000 sys 0.000000 (median of 146)
Total improvement for the full series:
Before: ! wall 0.153153 comb 0.150000 user 0.150000 sys 0.000000 (median of 66)
After: ! wall 0.020390 comb 0.020000 user 0.020000 sys 0.000000 (median of 146)
author | Boris Feld <boris.feld@octobus.net> |
---|---|
date | Mon, 19 Nov 2018 18:54:44 +0000 |
parents | 8a08aefa9273 |
children | 2372284d9457 |
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from __future__ import absolute_import, print_function # Import something from Mercurial, so the module loader gets initialized. from mercurial import pycompat del pycompat # unused for now from hgext.lfs import pointer def tryparse(text): r = {} try: r = pointer.deserialize(text) print('ok') except Exception as ex: print((b'%s' % ex).decode('ascii')) if r: text2 = r.serialize() if text2 != text: print('reconstructed text differs') return r t = (b'version https://git-lfs.github.com/spec/v1\n' b'oid sha256:4d7a214614ab2935c943f9e0ff69d22eadbb8f32b1' b'258daaa5e2ca24d17e2393\n' b'size 12345\n' b'x-foo extra-information\n') tryparse(b'') tryparse(t) tryparse(t.replace(b'git-lfs', b'unknown')) tryparse(t.replace(b'v1\n', b'v1\n\n')) tryparse(t.replace(b'sha256', b'ahs256')) tryparse(t.replace(b'sha256:', b'')) tryparse(t.replace(b'12345', b'0x12345')) tryparse(t.replace(b'extra-information', b'extra\0information')) tryparse(t.replace(b'extra-information', b'extra\ninformation')) tryparse(t.replace(b'x-foo', b'x_foo')) tryparse(t.replace(b'oid', b'blobid')) tryparse(t.replace(b'size', b'size-bytes').replace(b'oid', b'object-id'))