match: introduce boolean prefix() method
tl;dr: This is another step towards a (previously unstated) goal of
eliminating match.files() in conditions.
There are four types of matchers:
* always: Matches everything, checked with always(), files() is empty
* exact: Matches exact set of files, checked with isexact(), files()
contains the files to match
* patterns: Matches more complex patterns, checked with anypats(),
files() contains roots of the matched patterns
* prefix: Matches simple 'path:' patterns as prefixes ('foo' matches
both 'foo' and 'foo/bar'), no single method to check, files()
contains the prefixes to match
For completeness, it would be nice to have a method for checking for
the "prefix" type of matcher as well, so let's add that, making it
return True simply when none of the others do.
The larger goal here is to eliminate uses of match.files() in
conditions (i.e. bool(match.files())). The reason for this is that
there are scenarios when you would like to create a "prefix" matcher
that happens to match no files. One example is for 'hg files -I foo
bar'. The narrowmatcher also restricts the set of files given and it
would not surprise me if have bugs caused by that already. Note that
'if m.files() and not m.anypats()' and similar is sometimes used to
catch the "exact" and "prefix" cases above.
# perf.py - performance test routines
'''helper extension to measure performance'''
from mercurial import cmdutil, scmutil, util, commands, obsolete
from mercurial import repoview, branchmap, merge, copies
import time, os, sys
import functools
cmdtable = {}
command = cmdutil.command(cmdtable)
def gettimer(ui, opts=None):
"""return a timer function and formatter: (timer, formatter)
This functions exist to gather the creation of formatter in a single
place instead of duplicating it in all performance command."""
# enforce an idle period before execution to counteract power management
time.sleep(ui.configint("perf", "presleep", 1))
if opts is None:
opts = {}
# redirect all to stderr
ui = ui.copy()
ui.fout = ui.ferr
# get a formatter
fm = ui.formatter('perf', opts)
return functools.partial(_timer, fm), fm
def _timer(fm, func, title=None):
results = []
begin = time.time()
count = 0
while True:
ostart = os.times()
cstart = time.time()
r = func()
cstop = time.time()
ostop = os.times()
count += 1
a, b = ostart, ostop
results.append((cstop - cstart, b[0] - a[0], b[1]-a[1]))
if cstop - begin > 3 and count >= 100:
break
if cstop - begin > 10 and count >= 3:
break
fm.startitem()
if title:
fm.write('title', '! %s\n', title)
if r:
fm.write('result', '! result: %s\n', r)
m = min(results)
fm.plain('!')
fm.write('wall', ' wall %f', m[0])
fm.write('comb', ' comb %f', m[1] + m[2])
fm.write('user', ' user %f', m[1])
fm.write('sys', ' sys %f', m[2])
fm.write('count', ' (best of %d)', count)
fm.plain('\n')
@command('perfwalk')
def perfwalk(ui, repo, *pats):
timer, fm = gettimer(ui)
try:
m = scmutil.match(repo[None], pats, {})
timer(lambda: len(list(repo.dirstate.walk(m, [], True, False))))
except Exception:
try:
m = scmutil.match(repo[None], pats, {})
timer(lambda: len([b for a, b, c in repo.dirstate.statwalk([], m)]))
except Exception:
timer(lambda: len(list(cmdutil.walk(repo, pats, {}))))
fm.end()
@command('perfannotate')
def perfannotate(ui, repo, f):
timer, fm = gettimer(ui)
fc = repo['.'][f]
timer(lambda: len(fc.annotate(True)))
fm.end()
@command('perfstatus',
[('u', 'unknown', False,
'ask status to look for unknown files')])
def perfstatus(ui, repo, **opts):
#m = match.always(repo.root, repo.getcwd())
#timer(lambda: sum(map(len, repo.dirstate.status(m, [], False, False,
# False))))
timer, fm = gettimer(ui)
timer(lambda: sum(map(len, repo.status(**opts))))
fm.end()
@command('perfaddremove')
def perfaddremove(ui, repo):
timer, fm = gettimer(ui)
try:
oldquiet = repo.ui.quiet
repo.ui.quiet = True
matcher = scmutil.match(repo[None])
timer(lambda: scmutil.addremove(repo, matcher, "", dry_run=True))
finally:
repo.ui.quiet = oldquiet
fm.end()
def clearcaches(cl):
# behave somewhat consistently across internal API changes
if util.safehasattr(cl, 'clearcaches'):
cl.clearcaches()
elif util.safehasattr(cl, '_nodecache'):
from mercurial.node import nullid, nullrev
cl._nodecache = {nullid: nullrev}
cl._nodepos = None
@command('perfheads')
def perfheads(ui, repo):
timer, fm = gettimer(ui)
cl = repo.changelog
def d():
len(cl.headrevs())
clearcaches(cl)
timer(d)
fm.end()
@command('perftags')
def perftags(ui, repo):
import mercurial.changelog
import mercurial.manifest
timer, fm = gettimer(ui)
def t():
repo.changelog = mercurial.changelog.changelog(repo.svfs)
repo.manifest = mercurial.manifest.manifest(repo.svfs)
repo._tags = None
return len(repo.tags())
timer(t)
fm.end()
@command('perfancestors')
def perfancestors(ui, repo):
timer, fm = gettimer(ui)
heads = repo.changelog.headrevs()
def d():
for a in repo.changelog.ancestors(heads):
pass
timer(d)
fm.end()
@command('perfancestorset')
def perfancestorset(ui, repo, revset):
timer, fm = gettimer(ui)
revs = repo.revs(revset)
heads = repo.changelog.headrevs()
def d():
s = repo.changelog.ancestors(heads)
for rev in revs:
rev in s
timer(d)
fm.end()
@command('perfdirs')
def perfdirs(ui, repo):
timer, fm = gettimer(ui)
dirstate = repo.dirstate
'a' in dirstate
def d():
dirstate.dirs()
del dirstate._dirs
timer(d)
fm.end()
@command('perfdirstate')
def perfdirstate(ui, repo):
timer, fm = gettimer(ui)
"a" in repo.dirstate
def d():
repo.dirstate.invalidate()
"a" in repo.dirstate
timer(d)
fm.end()
@command('perfdirstatedirs')
def perfdirstatedirs(ui, repo):
timer, fm = gettimer(ui)
"a" in repo.dirstate
def d():
"a" in repo.dirstate._dirs
del repo.dirstate._dirs
timer(d)
fm.end()
@command('perffilefoldmap')
def perffilefoldmap(ui, repo):
timer, fm = gettimer(ui)
dirstate = repo.dirstate
'a' in dirstate
def d():
dirstate._filefoldmap.get('a')
del dirstate._filefoldmap
timer(d)
fm.end()
@command('perfdirfoldmap')
def perfdirfoldmap(ui, repo):
timer, fm = gettimer(ui)
dirstate = repo.dirstate
'a' in dirstate
def d():
dirstate._dirfoldmap.get('a')
del dirstate._dirfoldmap
del dirstate._dirs
timer(d)
fm.end()
@command('perfdirstatewrite')
def perfdirstatewrite(ui, repo):
timer, fm = gettimer(ui)
ds = repo.dirstate
"a" in ds
def d():
ds._dirty = True
ds.write()
timer(d)
fm.end()
@command('perfmergecalculate',
[('r', 'rev', '.', 'rev to merge against')])
def perfmergecalculate(ui, repo, rev):
timer, fm = gettimer(ui)
wctx = repo[None]
rctx = scmutil.revsingle(repo, rev, rev)
ancestor = wctx.ancestor(rctx)
# we don't want working dir files to be stat'd in the benchmark, so prime
# that cache
wctx.dirty()
def d():
# acceptremote is True because we don't want prompts in the middle of
# our benchmark
merge.calculateupdates(repo, wctx, rctx, ancestor, False, False, False,
acceptremote=True)
timer(d)
fm.end()
@command('perfpathcopies', [], "REV REV")
def perfpathcopies(ui, repo, rev1, rev2):
timer, fm = gettimer(ui)
ctx1 = scmutil.revsingle(repo, rev1, rev1)
ctx2 = scmutil.revsingle(repo, rev2, rev2)
def d():
copies.pathcopies(ctx1, ctx2)
timer(d)
fm.end()
@command('perfmanifest', [], 'REV')
def perfmanifest(ui, repo, rev):
timer, fm = gettimer(ui)
ctx = scmutil.revsingle(repo, rev, rev)
t = ctx.manifestnode()
def d():
repo.manifest._mancache.clear()
repo.manifest._cache = None
repo.manifest.read(t)
timer(d)
fm.end()
@command('perfchangeset')
def perfchangeset(ui, repo, rev):
timer, fm = gettimer(ui)
n = repo[rev].node()
def d():
repo.changelog.read(n)
#repo.changelog._cache = None
timer(d)
fm.end()
@command('perfindex')
def perfindex(ui, repo):
import mercurial.revlog
timer, fm = gettimer(ui)
mercurial.revlog._prereadsize = 2**24 # disable lazy parser in old hg
n = repo["tip"].node()
def d():
cl = mercurial.revlog.revlog(repo.svfs, "00changelog.i")
cl.rev(n)
timer(d)
fm.end()
@command('perfstartup')
def perfstartup(ui, repo):
timer, fm = gettimer(ui)
cmd = sys.argv[0]
def d():
os.system("HGRCPATH= %s version -q > /dev/null" % cmd)
timer(d)
fm.end()
@command('perfparents')
def perfparents(ui, repo):
timer, fm = gettimer(ui)
nl = [repo.changelog.node(i) for i in xrange(1000)]
def d():
for n in nl:
repo.changelog.parents(n)
timer(d)
fm.end()
@command('perfctxfiles')
def perfparents(ui, repo, x):
x = int(x)
timer, fm = gettimer(ui)
def d():
len(repo[x].files())
timer(d)
fm.end()
@command('perfrawfiles')
def perfparents(ui, repo, x):
x = int(x)
timer, fm = gettimer(ui)
cl = repo.changelog
def d():
len(cl.read(x)[3])
timer(d)
fm.end()
@command('perflookup')
def perflookup(ui, repo, rev):
timer, fm = gettimer(ui)
timer(lambda: len(repo.lookup(rev)))
fm.end()
@command('perfrevrange')
def perfrevrange(ui, repo, *specs):
timer, fm = gettimer(ui)
revrange = scmutil.revrange
timer(lambda: len(revrange(repo, specs)))
fm.end()
@command('perfnodelookup')
def perfnodelookup(ui, repo, rev):
timer, fm = gettimer(ui)
import mercurial.revlog
mercurial.revlog._prereadsize = 2**24 # disable lazy parser in old hg
n = repo[rev].node()
cl = mercurial.revlog.revlog(repo.svfs, "00changelog.i")
def d():
cl.rev(n)
clearcaches(cl)
timer(d)
fm.end()
@command('perflog',
[('', 'rename', False, 'ask log to follow renames')])
def perflog(ui, repo, **opts):
timer, fm = gettimer(ui)
ui.pushbuffer()
timer(lambda: commands.log(ui, repo, rev=[], date='', user='',
copies=opts.get('rename')))
ui.popbuffer()
fm.end()
@command('perfmoonwalk')
def perfmoonwalk(ui, repo):
"""benchmark walking the changelog backwards
This also loads the changelog data for each revision in the changelog.
"""
timer, fm = gettimer(ui)
def moonwalk():
for i in xrange(len(repo), -1, -1):
ctx = repo[i]
ctx.branch() # read changelog data (in addition to the index)
timer(moonwalk)
fm.end()
@command('perftemplating')
def perftemplating(ui, repo):
timer, fm = gettimer(ui)
ui.pushbuffer()
timer(lambda: commands.log(ui, repo, rev=[], date='', user='',
template='{date|shortdate} [{rev}:{node|short}]'
' {author|person}: {desc|firstline}\n'))
ui.popbuffer()
fm.end()
@command('perfcca')
def perfcca(ui, repo):
timer, fm = gettimer(ui)
timer(lambda: scmutil.casecollisionauditor(ui, False, repo.dirstate))
fm.end()
@command('perffncacheload')
def perffncacheload(ui, repo):
timer, fm = gettimer(ui)
s = repo.store
def d():
s.fncache._load()
timer(d)
fm.end()
@command('perffncachewrite')
def perffncachewrite(ui, repo):
timer, fm = gettimer(ui)
s = repo.store
s.fncache._load()
def d():
s.fncache._dirty = True
s.fncache.write()
timer(d)
fm.end()
@command('perffncacheencode')
def perffncacheencode(ui, repo):
timer, fm = gettimer(ui)
s = repo.store
s.fncache._load()
def d():
for p in s.fncache.entries:
s.encode(p)
timer(d)
fm.end()
@command('perfdiffwd')
def perfdiffwd(ui, repo):
"""Profile diff of working directory changes"""
timer, fm = gettimer(ui)
options = {
'w': 'ignore_all_space',
'b': 'ignore_space_change',
'B': 'ignore_blank_lines',
}
for diffopt in ('', 'w', 'b', 'B', 'wB'):
opts = dict((options[c], '1') for c in diffopt)
def d():
ui.pushbuffer()
commands.diff(ui, repo, **opts)
ui.popbuffer()
title = 'diffopts: %s' % (diffopt and ('-' + diffopt) or 'none')
timer(d, title)
fm.end()
@command('perfrevlog',
[('d', 'dist', 100, 'distance between the revisions')],
"[INDEXFILE]")
def perfrevlog(ui, repo, file_, **opts):
timer, fm = gettimer(ui)
from mercurial import revlog
dist = opts['dist']
def d():
r = revlog.revlog(lambda fn: open(fn, 'rb'), file_)
for x in xrange(0, len(r), dist):
r.revision(r.node(x))
timer(d)
fm.end()
@command('perfrevset',
[('C', 'clear', False, 'clear volatile cache between each call.')],
"REVSET")
def perfrevset(ui, repo, expr, clear=False):
"""benchmark the execution time of a revset
Use the --clean option if need to evaluate the impact of build volatile
revisions set cache on the revset execution. Volatile cache hold filtered
and obsolete related cache."""
timer, fm = gettimer(ui)
def d():
if clear:
repo.invalidatevolatilesets()
for r in repo.revs(expr): pass
timer(d)
fm.end()
@command('perfvolatilesets')
def perfvolatilesets(ui, repo, *names):
"""benchmark the computation of various volatile set
Volatile set computes element related to filtering and obsolescence."""
timer, fm = gettimer(ui)
repo = repo.unfiltered()
def getobs(name):
def d():
repo.invalidatevolatilesets()
obsolete.getrevs(repo, name)
return d
allobs = sorted(obsolete.cachefuncs)
if names:
allobs = [n for n in allobs if n in names]
for name in allobs:
timer(getobs(name), title=name)
def getfiltered(name):
def d():
repo.invalidatevolatilesets()
repoview.filterrevs(repo, name)
return d
allfilter = sorted(repoview.filtertable)
if names:
allfilter = [n for n in allfilter if n in names]
for name in allfilter:
timer(getfiltered(name), title=name)
fm.end()
@command('perfbranchmap',
[('f', 'full', False,
'Includes build time of subset'),
])
def perfbranchmap(ui, repo, full=False):
"""benchmark the update of a branchmap
This benchmarks the full repo.branchmap() call with read and write disabled
"""
timer, fm = gettimer(ui)
def getbranchmap(filtername):
"""generate a benchmark function for the filtername"""
if filtername is None:
view = repo
else:
view = repo.filtered(filtername)
def d():
if full:
view._branchcaches.clear()
else:
view._branchcaches.pop(filtername, None)
view.branchmap()
return d
# add filter in smaller subset to bigger subset
possiblefilters = set(repoview.filtertable)
allfilters = []
while possiblefilters:
for name in possiblefilters:
subset = branchmap.subsettable.get(name)
if subset not in possiblefilters:
break
else:
assert False, 'subset cycle %s!' % possiblefilters
allfilters.append(name)
possiblefilters.remove(name)
# warm the cache
if not full:
for name in allfilters:
repo.filtered(name).branchmap()
# add unfiltered
allfilters.append(None)
oldread = branchmap.read
oldwrite = branchmap.branchcache.write
try:
branchmap.read = lambda repo: None
branchmap.write = lambda repo: None
for name in allfilters:
timer(getbranchmap(name), title=str(name))
finally:
branchmap.read = oldread
branchmap.branchcache.write = oldwrite
fm.end()
@command('perfloadmarkers')
def perfloadmarkers(ui, repo):
"""benchmark the time to parse the on-disk markers for a repo
Result is the number of markers in the repo."""
timer, fm = gettimer(ui)
timer(lambda: len(obsolete.obsstore(repo.svfs)))
fm.end()