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view tests/test-contrib-check-code.t @ 42743:8c9a6adec67a
rust-discovery: using the children cache in add_missing
The DAG range computation often needs to get back to very old
revisions, and turns out to be disproportionately long, given
that the end goal is to remove the descendents of the given
missing revisons from the undecided set.
The fast iteration capabilities available in the Rust case make
it possible to avoid the DAG range entirely, at the cost of
precomputing the children cache, and to simply iterate on
children of the given missing revisions.
This is a case where staying on the same side of the interface
between the two languages has clear benefits.
On discoveries with initial undecided sets
small enough to bypass sampling entirely, the total cost of
computing the children cache and the subsequent iteration
becomes better than the Python + C counterpart, which relies on
reachableroots2.
For example, on a repo with more than one million revisions with
an initial undecided set of 11 elements, we get these figures:
Rust version with simple iteration
addcommons: 57.287us
first undecided computation: 184.278334ms
first children cache computation: 131.056us
addmissings iteration: 42.766us
first addinfo total: 185.24 ms
Python + C version
first addcommons: 0.29 ms
addcommons 0.21 ms
first undecided computation 191.35 ms
addmissings 45.75 ms
first addinfo total: 237.77 ms
On discoveries with large undecided sets, the initial price paid
makes the first addinfo slower than the Python + C version,
but that's more than compensated by the gain in sampling and
subsequent iterations.
Here's an extreme example with an undecided set of a million revisions:
Rust version:
first undecided computation: 293.842629ms
first children cache computation: 407.911297ms
addmissings iteration: 34.312869ms
first addinfo total: 776.02 ms
taking initial sample
query 2: sampling time: 1318.38 ms
query 2; still undecided: 1005013, sample size is: 200
addmissings: 143.062us
Python + C version:
first undecided computation 298.13 ms
addmissings 80.13 ms
first addinfo total: 399.62 ms
taking initial sample
query 2: sampling time: 3957.23 ms
query 2; still undecided: 1005013, sample size is: 200
addmissings 52.88 ms
Differential Revision: https://phab.mercurial-scm.org/D6428
author | Georges Racinet <georges.racinet@octobus.net> |
---|---|
date | Tue, 16 Apr 2019 01:16:39 +0200 |
parents | 867883d454ea |
children | 55d132525155 |
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$ cat > correct.py <<NO_CHECK_EOF > def toto(arg1, arg2): > del arg2 > return (5 + 6, 9) > NO_CHECK_EOF $ cat > wrong.py <<NO_CHECK_EOF > def toto( arg1, arg2): > del(arg2) > return ( 5+6, 9) > def badwrap(): > return 1 + \\ > 2 > NO_CHECK_EOF $ cat > quote.py <<NO_CHECK_EOF > # let's use quote in comments > (''' ( 4x5 ) > but """\\''' and finally''', > """let's fool checkpatch""", '1+2', > '"""', 42+1, """and > ( 4-1 ) """, "( 1+1 )\" and ") > a, '\\\\\\\\', "\\\\\\" x-2", "c-1" > NO_CHECK_EOF $ cat > classstyle.py <<NO_CHECK_EOF > class newstyle_class(object): > pass > > class oldstyle_class: > pass > > class empty(): > pass > > no_class = 1: > pass > NO_CHECK_EOF $ check_code="$TESTDIR"/../contrib/check-code.py $ "$check_code" ./wrong.py ./correct.py ./quote.py ./classstyle.py ./wrong.py:1: > def toto( arg1, arg2): gratuitous whitespace in () or [] ./wrong.py:2: > del(arg2) Python keyword is not a function ./wrong.py:3: > return ( 5+6, 9) gratuitous whitespace in () or [] missing whitespace in expression ./wrong.py:5: > return 1 + \ Use () to wrap long lines in Python, not \ ./quote.py:5: > '"""', 42+1, """and missing whitespace in expression ./classstyle.py:4: > class oldstyle_class: old-style class, use class foo(object) ./classstyle.py:7: > class empty(): class foo() creates old style object, use class foo(object) [1] $ cat > python3-compat.py << NO_CHECK_EOF > foo <> bar > reduce(lambda a, b: a + b, [1, 2, 3, 4]) > dict(key=value) > NO_CHECK_EOF $ "$check_code" python3-compat.py python3-compat.py:1: > foo <> bar <> operator is not available in Python 3+, use != python3-compat.py:2: > reduce(lambda a, b: a + b, [1, 2, 3, 4]) reduce is not available in Python 3+ python3-compat.py:3: > dict(key=value) dict() is different in Py2 and 3 and is slower than {} [1] $ cat > foo.c <<NO_CHECK_EOF > void narf() { > strcpy(foo, bar); > // strcpy_s is okay, but this comment is not > strcpy_s(foo, bar); > } > NO_CHECK_EOF $ "$check_code" ./foo.c ./foo.c:2: > strcpy(foo, bar); don't use strcpy, use strlcpy or memcpy ./foo.c:3: > // strcpy_s is okay, but this comment is not don't use //-style comments [1] $ cat > is-op.py <<NO_CHECK_EOF > # is-operator comparing number or string literal > x = None > y = x is 'foo' > y = x is "foo" > y = x is 5346 > y = x is -6 > y = x is not 'foo' > y = x is not "foo" > y = x is not 5346 > y = x is not -6 > NO_CHECK_EOF $ "$check_code" ./is-op.py ./is-op.py:3: > y = x is 'foo' object comparison with literal ./is-op.py:4: > y = x is "foo" object comparison with literal ./is-op.py:5: > y = x is 5346 object comparison with literal ./is-op.py:6: > y = x is -6 object comparison with literal ./is-op.py:7: > y = x is not 'foo' object comparison with literal ./is-op.py:8: > y = x is not "foo" object comparison with literal ./is-op.py:9: > y = x is not 5346 object comparison with literal ./is-op.py:10: > y = x is not -6 object comparison with literal [1] $ cat > for-nolineno.py <<NO_CHECK_EOF > except: > NO_CHECK_EOF $ "$check_code" for-nolineno.py --nolineno for-nolineno.py:0: > except: naked except clause [1] $ cat > warning.t <<NO_CHECK_EOF > $ function warnonly { > > } > $ diff -N aaa > $ function onwarn {} > NO_CHECK_EOF $ "$check_code" warning.t $ "$check_code" --warn warning.t warning.t:1: > $ function warnonly { warning: don't use 'function', use old style warning.t:3: > $ diff -N aaa warning: don't use 'diff -N' warning.t:4: > $ function onwarn {} warning: don't use 'function', use old style [1] $ cat > error.t <<NO_CHECK_EOF > $ [ foo == bar ] > NO_CHECK_EOF $ "$check_code" error.t error.t:1: > $ [ foo == bar ] [ foo == bar ] is a bashism, use [ foo = bar ] instead [1] $ rm error.t $ cat > raise-format.py <<NO_CHECK_EOF > raise SomeException, message > # this next line is okay > raise SomeException(arg1, arg2) > NO_CHECK_EOF $ "$check_code" not-existing.py raise-format.py Skipping*not-existing.py* (glob) raise-format.py:1: > raise SomeException, message don't use old-style two-argument raise, use Exception(message) [1] $ cat <<NO_CHECK_EOF > tab.t > indent > > heredoc > NO_CHECK_EOF $ "$check_code" tab.t tab.t:1: > indent don't use tabs to indent [1] $ rm tab.t $ cat > rst.py <<NO_CHECK_EOF > """problematic rst text > > .. note:: > wrong > """ > > ''' > > .. note:: > > valid > > new text > > .. note:: > > also valid > ''' > > """mixed > > .. note:: > > good > > .. note:: > plus bad > """ > NO_CHECK_EOF $ $check_code -w rst.py rst.py:3: > .. note:: warning: add two newlines after '.. note::' rst.py:26: > .. note:: warning: add two newlines after '.. note::' [1] $ cat > ./map-inside-gettext.py <<NO_CHECK_EOF > print(_("map inside gettext %s" % v)) > > print(_("concatenating " " by " " space %s" % v)) > print(_("concatenating " + " by " + " '+' %s" % v)) > > print(_("mapping operation in different line %s" > % v)) > > print(_( > "leading spaces inside of '(' %s" % v)) > NO_CHECK_EOF $ "$check_code" ./map-inside-gettext.py ./map-inside-gettext.py:1: > print(_("map inside gettext %s" % v)) don't use % inside _() ./map-inside-gettext.py:3: > print(_("concatenating " " by " " space %s" % v)) don't use % inside _() ./map-inside-gettext.py:4: > print(_("concatenating " + " by " + " '+' %s" % v)) don't use % inside _() ./map-inside-gettext.py:6: > print(_("mapping operation in different line %s" don't use % inside _() ./map-inside-gettext.py:9: > print(_( don't use % inside _() [1] web templates $ mkdir -p mercurial/templates $ cat > mercurial/templates/example.tmpl <<NO_CHECK_EOF > {desc} > {desc|escape} > {desc|firstline} > {desc|websub} > NO_CHECK_EOF $ "$check_code" --warnings mercurial/templates/example.tmpl mercurial/templates/example.tmpl:2: > {desc|escape} warning: follow desc keyword with either firstline or websub [1] 'string join across lines with no space' detection $ cat > stringjoin.py <<NO_CHECK_EOF > foo = (' foo' > 'bar foo.' > 'bar foo:' > 'bar foo@' > 'bar foo%' > 'bar foo*' > 'bar foo+' > 'bar foo-' > 'bar') > NO_CHECK_EOF 'missing _() in ui message' detection $ cat > uigettext.py <<NO_CHECK_EOF > ui.status("% 10s %05d % -3.2f %*s %%" > # this use '\\\\' instead of '\\', because the latter in > # heredoc on shell becomes just '\' > '\\\\ \n \t \0' > """12345 > """ > '''.:*+-= > ''' "%-6d \n 123456 .:*+-= foobar") > NO_CHECK_EOF superfluous pass $ cat > superfluous_pass.py <<NO_CHECK_EOF > # correct examples > if foo: > pass > else: > # comment-only line means still need pass > pass > def nothing(): > pass > class empty(object): > pass > if whatever: > passvalue(value) > # bad examples > if foo: > "foo" > pass > else: # trailing comment doesn't fool checker > wat() > pass > def nothing(): > "docstring means no pass" > pass > class empty(object): > """multiline > docstring also > means no pass""" > pass > NO_CHECK_EOF (Checking multiple invalid files at once examines whether caching translation table for repquote() works as expected or not. All files should break rules depending on result of repquote(), in this case) $ "$check_code" stringjoin.py uigettext.py superfluous_pass.py stringjoin.py:1: > foo = (' foo' string join across lines with no space stringjoin.py:2: > 'bar foo.' string join across lines with no space stringjoin.py:3: > 'bar foo:' string join across lines with no space stringjoin.py:4: > 'bar foo@' string join across lines with no space stringjoin.py:5: > 'bar foo%' string join across lines with no space stringjoin.py:6: > 'bar foo*' string join across lines with no space stringjoin.py:7: > 'bar foo+' string join across lines with no space stringjoin.py:8: > 'bar foo-' string join across lines with no space uigettext.py:1: > ui.status("% 10s %05d % -3.2f %*s %%" missing _() in ui message (use () to hide false-positives) superfluous_pass.py:14: > if foo: omit superfluous pass superfluous_pass.py:17: > else: # trailing comment doesn't fool checker omit superfluous pass superfluous_pass.py:20: > def nothing(): omit superfluous pass superfluous_pass.py:23: > class empty(object): omit superfluous pass [1] Check code fragments embedded in test script $ cat > embedded-code.t <<NO_CHECK_EOF > code fragment in doctest style > >>> x = (1,2) > ... > ... x = (1,2) > > code fragment in heredoc style > $ python <<EOF > > x = (1,2) > > EOF > > code fragment in file heredoc style > $ python > file.py <<EOF > > x = (1,2) > > EOF > NO_CHECK_EOF $ "$check_code" embedded-code.t embedded-code.t:2: > x = (1,2) missing whitespace after , embedded-code.t:4: > x = (1,2) missing whitespace after , embedded-code.t:8: > x = (1,2) missing whitespace after , embedded-code.t:13: > x = (1,2) missing whitespace after , [1] "max warnings per file" is shared by all embedded code fragments $ "$check_code" --per-file=3 embedded-code.t embedded-code.t:2: > x = (1,2) missing whitespace after , embedded-code.t:4: > x = (1,2) missing whitespace after , embedded-code.t:8: > x = (1,2) missing whitespace after , (too many errors, giving up) [1]