Mercurial > hg
view contrib/debugshell.py @ 20836:a8b4541bb961
grep: reuse the first "util.binary()" result for efficiency
Before this patch, to check whether the file in the specified revision
is binary or not, "util.binary()" is invoked via internal function
"binary()" of "hg grep" once per a line of "hg grep" output, even
though binary-ness is not changed in the same file.
This patch reuses the first "util.binary()" invocation result by
annotating internal function "binary()" with "@util.cachefunc".
Performance improvement measured by "hgperf grep -r 88d8e568add1 vfs
mercurial/scmutil.py":
before this patch:
! wall 0.024000 comb 0.015600 user 0.015600 sys 0.000000 (best of 118)
after this patch:
! wall 0.023000 comb 0.015600 user 0.015600 sys 0.000000 (best of 123)
Status of recent(88d8e568add1) "mercurial/scmutil.py":
# of lines: 919 (may affect cost of search)
# of bytes: 29633 (may affect cost of "util.binary()")
# of matches: 22 (may affect frequency of "util.binary()")
author | FUJIWARA Katsunori <foozy@lares.dti.ne.jp> |
---|---|
date | Sat, 15 Feb 2014 19:52:36 +0900 |
parents | cccc44304b2c |
children | 8b5c039f2b4f |
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# debugshell extension """a python shell with repo, changelog & manifest objects""" import sys import mercurial import code def pdb(ui, repo, msg, **opts): objects = { 'mercurial': mercurial, 'repo': repo, 'cl': repo.changelog, 'mf': repo.manifest, } code.interact(msg, local=objects) def ipdb(ui, repo, msg, **opts): import IPython cl = repo.changelog mf = repo.manifest cl, mf # use variables to appease pyflakes IPython.embed() def debugshell(ui, repo, **opts): bannermsg = "loaded repo : %s\n" \ "using source: %s" % (repo.root, mercurial.__path__[0]) pdbmap = { 'pdb' : 'code', 'ipdb' : 'IPython' } debugger = ui.config("ui", "debugger") if not debugger: debugger = 'pdb' # if IPython doesn't exist, fallback to code.interact try: __import__(pdbmap[debugger]) except ImportError: ui.warn("%s debugger specified but %s module was not found\n" % (debugger, pdbmap[debugger])) debugger = 'pdb' getattr(sys.modules[__name__], debugger)(ui, repo, bannermsg, **opts) cmdtable = { "debugshell|dbsh": (debugshell, []) }