Mercurial > hg
view hgext/hgk.py @ 44861:065421e12248
files: speed up `hg files` when no flags change display
It's not the first time I see slowness from this command slow down
tools built on top of hg.
The majority of the time is spent merely printing the result before
this change, which is clearly not how it should be (especially since
the computation of the result also looks slow).
Running `hg files` in mozilla-central:
parent revision: 1,260s
this commit: 0,683s
this commit without batching ui.write: 0,931s
this commit replacing the body of the loop with `pass`: 0,566s
This looks like a prime candidate for a rust fast path, but until
then, it seems reasonable to optimize the python.
Differential Revision: https://phab.mercurial-scm.org/D8586
author | Valentin Gatien-Baron <valentin.gatienbaron@gmail.com> |
---|---|
date | Tue, 26 May 2020 08:15:09 -0400 |
parents | 1756f75873bf |
children | 89a2afe31e82 |
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# Minimal support for git commands on an hg repository # # Copyright 2005, 2006 Chris Mason <mason@suse.com> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. '''browse the repository in a graphical way The hgk extension allows browsing the history of a repository in a graphical way. It requires Tcl/Tk version 8.4 or later. (Tcl/Tk is not distributed with Mercurial.) hgk consists of two parts: a Tcl script that does the displaying and querying of information, and an extension to Mercurial named hgk.py, which provides hooks for hgk to get information. hgk can be found in the contrib directory, and the extension is shipped in the hgext repository, and needs to be enabled. The :hg:`view` command will launch the hgk Tcl script. For this command to work, hgk must be in your search path. Alternately, you can specify the path to hgk in your configuration file:: [hgk] path = /location/of/hgk hgk can make use of the extdiff extension to visualize revisions. Assuming you had already configured extdiff vdiff command, just add:: [hgk] vdiff=vdiff Revisions context menu will now display additional entries to fire vdiff on hovered and selected revisions. ''' from __future__ import absolute_import import os from mercurial.i18n import _ from mercurial.node import ( nullid, nullrev, short, ) from mercurial import ( commands, obsolete, patch, pycompat, registrar, scmutil, ) cmdtable = {} command = registrar.command(cmdtable) # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should # be specifying the version(s) of Mercurial they are tested with, or # leave the attribute unspecified. testedwith = b'ships-with-hg-core' configtable = {} configitem = registrar.configitem(configtable) configitem( b'hgk', b'path', default=b'hgk', ) @command( b'debug-diff-tree', [ (b'p', b'patch', None, _(b'generate patch')), (b'r', b'recursive', None, _(b'recursive')), (b'P', b'pretty', None, _(b'pretty')), (b's', b'stdin', None, _(b'stdin')), (b'C', b'copy', None, _(b'detect copies')), (b'S', b'search', b"", _(b'search')), ], b'[OPTION]... NODE1 NODE2 [FILE]...', inferrepo=True, ) def difftree(ui, repo, node1=None, node2=None, *files, **opts): """diff trees from two commits""" def __difftree(repo, node1, node2, files=None): assert node2 is not None if files is None: files = [] mmap = repo[node1].manifest() mmap2 = repo[node2].manifest() m = scmutil.match(repo[node1], files) st = repo.status(node1, node2, m) empty = short(nullid) for f in st.modified: # TODO get file permissions ui.writenoi18n( b":100664 100664 %s %s M\t%s\t%s\n" % (short(mmap[f]), short(mmap2[f]), f, f) ) for f in st.added: ui.writenoi18n( b":000000 100664 %s %s N\t%s\t%s\n" % (empty, short(mmap2[f]), f, f) ) for f in st.removed: ui.writenoi18n( b":100664 000000 %s %s D\t%s\t%s\n" % (short(mmap[f]), empty, f, f) ) ## while True: if opts['stdin']: line = ui.fin.readline() if not line: break line = line.rstrip(pycompat.oslinesep).split(b' ') node1 = line[0] if len(line) > 1: node2 = line[1] else: node2 = None node1 = repo.lookup(node1) if node2: node2 = repo.lookup(node2) else: node2 = node1 node1 = repo.changelog.parents(node1)[0] if opts['patch']: if opts['pretty']: catcommit(ui, repo, node2, b"") m = scmutil.match(repo[node1], files) diffopts = patch.difffeatureopts(ui) diffopts.git = True chunks = patch.diff(repo, node1, node2, match=m, opts=diffopts) for chunk in chunks: ui.write(chunk) else: __difftree(repo, node1, node2, files=files) if not opts['stdin']: break def catcommit(ui, repo, n, prefix, ctx=None): nlprefix = b'\n' + prefix if ctx is None: ctx = repo[n] # use ctx.node() instead ?? ui.write((b"tree %s\n" % short(ctx.changeset()[0]))) for p in ctx.parents(): ui.write((b"parent %s\n" % p)) date = ctx.date() description = ctx.description().replace(b"\0", b"") ui.write((b"author %s %d %d\n" % (ctx.user(), int(date[0]), date[1]))) if b'committer' in ctx.extra(): ui.write((b"committer %s\n" % ctx.extra()[b'committer'])) ui.write((b"revision %d\n" % ctx.rev())) ui.write((b"branch %s\n" % ctx.branch())) if obsolete.isenabled(repo, obsolete.createmarkersopt): if ctx.obsolete(): ui.writenoi18n(b"obsolete\n") ui.write((b"phase %s\n\n" % ctx.phasestr())) if prefix != b"": ui.write( b"%s%s\n" % (prefix, description.replace(b'\n', nlprefix).strip()) ) else: ui.write(description + b"\n") if prefix: ui.write(b'\0') @command(b'debug-merge-base', [], _(b'REV REV')) def base(ui, repo, node1, node2): """output common ancestor information""" node1 = repo.lookup(node1) node2 = repo.lookup(node2) n = repo.changelog.ancestor(node1, node2) ui.write(short(n) + b"\n") @command( b'debug-cat-file', [(b's', b'stdin', None, _(b'stdin'))], _(b'[OPTION]... TYPE FILE'), inferrepo=True, ) def catfile(ui, repo, type=None, r=None, **opts): """cat a specific revision""" # in stdin mode, every line except the commit is prefixed with two # spaces. This way the our caller can find the commit without magic # strings # prefix = b"" if opts['stdin']: line = ui.fin.readline() if not line: return (type, r) = line.rstrip(pycompat.oslinesep).split(b' ') prefix = b" " else: if not type or not r: ui.warn(_(b"cat-file: type or revision not supplied\n")) commands.help_(ui, b'cat-file') while r: if type != b"commit": ui.warn(_(b"aborting hg cat-file only understands commits\n")) return 1 n = repo.lookup(r) catcommit(ui, repo, n, prefix) if opts['stdin']: line = ui.fin.readline() if not line: break (type, r) = line.rstrip(pycompat.oslinesep).split(b' ') else: break # git rev-tree is a confusing thing. You can supply a number of # commit sha1s on the command line, and it walks the commit history # telling you which commits are reachable from the supplied ones via # a bitmask based on arg position. # you can specify a commit to stop at by starting the sha1 with ^ def revtree(ui, args, repo, full=b"tree", maxnr=0, parents=False): def chlogwalk(): count = len(repo) i = count l = [0] * 100 chunk = 100 while True: if chunk > i: chunk = i i = 0 else: i -= chunk for x in pycompat.xrange(chunk): if i + x >= count: l[chunk - x :] = [0] * (chunk - x) break if full is not None: if (i + x) in repo: l[x] = repo[i + x] l[x].changeset() # force reading else: if (i + x) in repo: l[x] = 1 for x in pycompat.xrange(chunk - 1, -1, -1): if l[x] != 0: yield (i + x, full is not None and l[x] or None) if i == 0: break # calculate and return the reachability bitmask for sha def is_reachable(ar, reachable, sha): if len(ar) == 0: return 1 mask = 0 for i in pycompat.xrange(len(ar)): if sha in reachable[i]: mask |= 1 << i return mask reachable = [] stop_sha1 = [] want_sha1 = [] count = 0 # figure out which commits they are asking for and which ones they # want us to stop on for i, arg in enumerate(args): if arg.startswith(b'^'): s = repo.lookup(arg[1:]) stop_sha1.append(s) want_sha1.append(s) elif arg != b'HEAD': want_sha1.append(repo.lookup(arg)) # calculate the graph for the supplied commits for i, n in enumerate(want_sha1): reachable.append(set()) visit = [n] reachable[i].add(n) while visit: n = visit.pop(0) if n in stop_sha1: continue for p in repo.changelog.parents(n): if p not in reachable[i]: reachable[i].add(p) visit.append(p) if p in stop_sha1: continue # walk the repository looking for commits that are in our # reachability graph for i, ctx in chlogwalk(): if i not in repo: continue n = repo.changelog.node(i) mask = is_reachable(want_sha1, reachable, n) if mask: parentstr = b"" if parents: pp = repo.changelog.parents(n) if pp[0] != nullid: parentstr += b" " + short(pp[0]) if pp[1] != nullid: parentstr += b" " + short(pp[1]) if not full: ui.write(b"%s%s\n" % (short(n), parentstr)) elif full == b"commit": ui.write(b"%s%s\n" % (short(n), parentstr)) catcommit(ui, repo, n, b' ', ctx) else: (p1, p2) = repo.changelog.parents(n) (h, h1, h2) = map(short, (n, p1, p2)) (i1, i2) = map(repo.changelog.rev, (p1, p2)) date = ctx.date()[0] ui.write(b"%s %s:%s" % (date, h, mask)) mask = is_reachable(want_sha1, reachable, p1) if i1 != nullrev and mask > 0: ui.write(b"%s:%s " % (h1, mask)), mask = is_reachable(want_sha1, reachable, p2) if i2 != nullrev and mask > 0: ui.write(b"%s:%s " % (h2, mask)) ui.write(b"\n") if maxnr and count >= maxnr: break count += 1 # git rev-list tries to order things by date, and has the ability to stop # at a given commit without walking the whole repo. TODO add the stop # parameter @command( b'debug-rev-list', [ (b'H', b'header', None, _(b'header')), (b't', b'topo-order', None, _(b'topo-order')), (b'p', b'parents', None, _(b'parents')), (b'n', b'max-count', 0, _(b'max-count')), ], b'[OPTION]... REV...', ) def revlist(ui, repo, *revs, **opts): """print revisions""" if opts['header']: full = b"commit" else: full = None copy = [x for x in revs] revtree(ui, copy, repo, full, opts['max_count'], opts[r'parents']) @command( b'view', [(b'l', b'limit', b'', _(b'limit number of changes displayed'), _(b'NUM'))], _(b'[-l LIMIT] [REVRANGE]'), helpcategory=command.CATEGORY_CHANGE_NAVIGATION, ) def view(ui, repo, *etc, **opts): """start interactive history viewer""" opts = pycompat.byteskwargs(opts) os.chdir(repo.root) optstr = b' '.join( [b'--%s %s' % (k, v) for k, v in pycompat.iteritems(opts) if v] ) if repo.filtername is None: optstr += b'--hidden' cmd = ui.config(b"hgk", b"path") + b" %s %s" % (optstr, b" ".join(etc)) ui.debug(b"running %s\n" % cmd) ui.system(cmd, blockedtag=b'hgk_view')