outgoing: rework the handling of the `missingroots` case to be faster
The previous implementation was slow, to the point it was taking a significant
amount of `hg bundle --type none-streamv2` call. We rework the code to compute
the same value much faster, making the operation disappear from the `hg bundle
--type none-streamv2` profile. Someone would remark that producing a streamclone
does not requires an `outgoing` object. However that is a matter for another
day. There is other user of `missingroots` (non stream `hg bundle` call for
example), and they will also benefit from this rework.
We implement an old TODO in the process, directly computing the missing and
common attribute as we have most element at hand already.
### benchmark.name = hg.command.bundle
# bin-env-vars.hg.flavor = default
# bin-env-vars.hg.py-re2-module = default
# benchmark.variants.revs = all
# benchmark.variants.type = none-streamv2
## data-env-vars.name = heptapod-public-2024-03-25-zstd-sparse-revlog
before: 7.750458
after: 6.665565 (-14.00%, -1.08)
## data-env-vars.name = mercurial-public-2024-03-22-zstd-sparse-revlog
before: 0.700229
after: 0.496050 (-29.16%, -0.20)
## data-env-vars.name = mozilla-try-2023-03-22-zstd-sparse-revlog
before: 346.508952
after: 316.749699 (-8.59%, -29.76)
## data-env-vars.name = pypy-2024-03-22-zstd-sparse-revlog
before: 3.401700
after: 2.915810 (-14.28%, -0.49)
## data-env-vars.name = tryton-public-2024-03-22-zstd-sparse-revlog
before: 1.870798
after: 1.461583 (-21.87%, -0.41)
note: this whole `missingroots` of outgoing has a limited number of callers and
could likely be replace by something simpler (like taking an explicit
"missing_revs" set for example). However this is a wider change and we focus on
a small impact, quick rework that does not change the API for now.
#require py37
$ byteify_strings () {
> "$PYTHON" "$TESTDIR/../contrib/byteify-strings.py" "$@"
> }
Test version
$ byteify_strings --version
Byteify strings * (glob)
Test in-place
$ cat > testfile.py <<EOF
> obj['test'] = b"1234"
> mydict.iteritems()
> EOF
$ byteify_strings testfile.py -i
$ cat testfile.py
obj[b'test'] = b"1234"
mydict.iteritems()
Test with dictiter
$ cat > testfile.py <<EOF
> obj['test'] = b"1234"
> mydict.iteritems()
> EOF
$ byteify_strings testfile.py --dictiter
obj[b'test'] = b"1234"
mydict.items()
Test kwargs-like objects
$ cat > testfile.py <<EOF
> kwargs['test'] = "123"
> kwargs[test['testing']]
> kwargs[test[[['testing']]]]
> kwargs[kwargs['testing']]
> kwargs.get('test')
> kwargs.pop('test')
> kwargs.get('test', 'testing')
> kwargs.pop('test', 'testing')
> kwargs.setdefault('test', 'testing')
>
> opts['test'] = "123"
> opts[test['testing']]
> opts[test[[['testing']]]]
> opts[opts['testing']]
> opts.get('test')
> opts.pop('test')
> opts.get('test', 'testing')
> opts.pop('test', 'testing')
> opts.setdefault('test', 'testing')
>
> commitopts['test'] = "123"
> commitopts[test['testing']]
> commitopts[test[[['testing']]]]
> commitopts[commitopts['testing']]
> commitopts.get('test')
> commitopts.pop('test')
> commitopts.get('test', 'testing')
> commitopts.pop('test', 'testing')
> commitopts.setdefault('test', 'testing')
> EOF
$ byteify_strings testfile.py --treat-as-kwargs kwargs opts commitopts
kwargs['test'] = b"123"
kwargs[test[b'testing']]
kwargs[test[[[b'testing']]]]
kwargs[kwargs['testing']]
kwargs.get('test')
kwargs.pop('test')
kwargs.get('test', b'testing')
kwargs.pop('test', b'testing')
kwargs.setdefault('test', b'testing')
opts['test'] = b"123"
opts[test[b'testing']]
opts[test[[[b'testing']]]]
opts[opts['testing']]
opts.get('test')
opts.pop('test')
opts.get('test', b'testing')
opts.pop('test', b'testing')
opts.setdefault('test', b'testing')
commitopts['test'] = b"123"
commitopts[test[b'testing']]
commitopts[test[[[b'testing']]]]
commitopts[commitopts['testing']]
commitopts.get('test')
commitopts.pop('test')
commitopts.get('test', b'testing')
commitopts.pop('test', b'testing')
commitopts.setdefault('test', b'testing')
Test attr*() as methods
$ cat > testfile.py <<EOF
> setattr(o, 'a', 1)
> util.setattr(o, 'ae', 1)
> util.getattr(o, 'alksjdf', 'default')
> util.addattr(o, 'asdf')
> util.hasattr(o, 'lksjdf', 'default')
> util.safehasattr(o, 'lksjdf', 'default')
> @eh.wrapfunction(func, 'lksjdf')
> def f():
> pass
> @eh.wrapclass(klass, 'lksjdf')
> def f():
> pass
> EOF
Test without attr*() as methods
$ cat > testfile.py <<EOF
> setattr(o, 'a', 1)
> util.setattr(o, 'ae', 1)
> util.getattr(o, 'alksjdf', 'default')
> util.addattr(o, 'asdf')
> util.hasattr(o, 'lksjdf', 'default')
> util.safehasattr(o, 'lksjdf', 'default')
> @eh.wrapfunction(func, 'lksjdf')
> def f():
> pass
> @eh.wrapclass(klass, 'lksjdf')
> def f():
> pass
> EOF
$ byteify_strings testfile.py
setattr(o, 'a', 1)
util.setattr(o, 'ae', 1)
util.getattr(o, 'alksjdf', b'default')
util.addattr(o, 'asdf')
util.hasattr(o, 'lksjdf', b'default')
util.safehasattr(o, 'lksjdf', b'default')
@eh.wrapfunction(func, 'lksjdf')
def f():
pass
@eh.wrapclass(klass, 'lksjdf')
def f():
pass
Test ignore comments
$ cat > testfile.py <<EOF
> # py3-transform: off
> "none"
> "of"
> 'these'
> s = """should"""
> d = '''be'''
> # py3-transform: on
> "this should"
> 'and this also'
>
> # no-py3-transform
> l = "this should be ignored"
> l2 = "this shouldn't"
>
> EOF
$ byteify_strings testfile.py
# py3-transform: off
"none"
"of"
'these'
s = """should"""
d = '''be'''
# py3-transform: on
b"this should"
b'and this also'
# no-py3-transform
l = "this should be ignored"
l2 = b"this shouldn't"
Test triple-quoted strings
$ cat > testfile.py <<EOF
> """This is ignored
> """
>
> line = """
> This should not be
> """
> line = '''
> Neither should this
> '''
> EOF
$ byteify_strings testfile.py
"""This is ignored
"""
line = b"""
This should not be
"""
line = b'''
Neither should this
'''
Test prefixed strings
$ cat > testfile.py <<EOF
> obj['test'] = b"1234"
> obj[r'test'] = u"1234"
> EOF
$ byteify_strings testfile.py
obj[b'test'] = b"1234"
obj[r'test'] = u"1234"
Test multi-line alignment
$ cat > testfile.py <<'EOF'
> def foo():
> error.Abort(_("foo"
> "bar"
> "%s")
> % parameter)
> {
> 'test': dict,
> 'test2': dict,
> }
> [
> "thing",
> "thing2"
> ]
> (
> "tuple",
> "tuple2",
> )
> {"thing",
> }
> EOF
$ byteify_strings testfile.py
def foo():
error.Abort(_(b"foo"
b"bar"
b"%s")
% parameter)
{
b'test': dict,
b'test2': dict,
}
[
b"thing",
b"thing2"
]
(
b"tuple",
b"tuple2",
)
{b"thing",
}