Mercurial > hg-stable
changeset 30538:bd5c4320b5a8
debugcommands: move 'debugdeltachain' in the new module
| author | Gregory Szorc <gregory.szorc@gmail.com> |
|---|---|
| date | Wed, 17 Aug 2016 21:01:02 -0700 |
| parents | 22683f2f8100 |
| children | 74013a831872 |
| files | mercurial/commands.py mercurial/debugcommands.py |
| diffstat | 2 files changed, 101 insertions(+), 101 deletions(-) [+] |
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--- a/mercurial/commands.py Wed Aug 17 21:00:11 2016 -0700 +++ b/mercurial/commands.py Wed Aug 17 21:01:02 2016 -0700 @@ -1858,107 +1858,6 @@ with repo.wlock(False): return cmdutil.copy(ui, repo, pats, opts) -@command('debugdeltachain', - debugrevlogopts + formatteropts, - _('-c|-m|FILE'), - optionalrepo=True) -def debugdeltachain(ui, repo, file_=None, **opts): - """dump information about delta chains in a revlog - - Output can be templatized. Available template keywords are: - - :``rev``: revision number - :``chainid``: delta chain identifier (numbered by unique base) - :``chainlen``: delta chain length to this revision - :``prevrev``: previous revision in delta chain - :``deltatype``: role of delta / how it was computed - :``compsize``: compressed size of revision - :``uncompsize``: uncompressed size of revision - :``chainsize``: total size of compressed revisions in chain - :``chainratio``: total chain size divided by uncompressed revision size - (new delta chains typically start at ratio 2.00) - :``lindist``: linear distance from base revision in delta chain to end - of this revision - :``extradist``: total size of revisions not part of this delta chain from - base of delta chain to end of this revision; a measurement - of how much extra data we need to read/seek across to read - the delta chain for this revision - :``extraratio``: extradist divided by chainsize; another representation of - how much unrelated data is needed to load this delta chain - """ - r = cmdutil.openrevlog(repo, 'debugdeltachain', file_, opts) - index = r.index - generaldelta = r.version & revlog.REVLOGGENERALDELTA - - def revinfo(rev): - e = index[rev] - compsize = e[1] - uncompsize = e[2] - chainsize = 0 - - if generaldelta: - if e[3] == e[5]: - deltatype = 'p1' - elif e[3] == e[6]: - deltatype = 'p2' - elif e[3] == rev - 1: - deltatype = 'prev' - elif e[3] == rev: - deltatype = 'base' - else: - deltatype = 'other' - else: - if e[3] == rev: - deltatype = 'base' - else: - deltatype = 'prev' - - chain = r._deltachain(rev)[0] - for iterrev in chain: - e = index[iterrev] - chainsize += e[1] - - return compsize, uncompsize, deltatype, chain, chainsize - - fm = ui.formatter('debugdeltachain', opts) - - fm.plain(' rev chain# chainlen prev delta ' - 'size rawsize chainsize ratio lindist extradist ' - 'extraratio\n') - - chainbases = {} - for rev in r: - comp, uncomp, deltatype, chain, chainsize = revinfo(rev) - chainbase = chain[0] - chainid = chainbases.setdefault(chainbase, len(chainbases) + 1) - basestart = r.start(chainbase) - revstart = r.start(rev) - lineardist = revstart + comp - basestart - extradist = lineardist - chainsize - try: - prevrev = chain[-2] - except IndexError: - prevrev = -1 - - chainratio = float(chainsize) / float(uncomp) - extraratio = float(extradist) / float(chainsize) - - fm.startitem() - fm.write('rev chainid chainlen prevrev deltatype compsize ' - 'uncompsize chainsize chainratio lindist extradist ' - 'extraratio', - '%7d %7d %8d %8d %7s %10d %10d %10d %9.5f %9d %9d %10.5f\n', - rev, chainid, len(chain), prevrev, deltatype, comp, - uncomp, chainsize, chainratio, lineardist, extradist, - extraratio, - rev=rev, chainid=chainid, chainlen=len(chain), - prevrev=prevrev, deltatype=deltatype, compsize=comp, - uncompsize=uncomp, chainsize=chainsize, - chainratio=chainratio, lindist=lineardist, - extradist=extradist, extraratio=extraratio) - - fm.end() - @command('debuginstall', [] + formatteropts, '', norepo=True) def debuginstall(ui, **opts): '''test Mercurial installation
--- a/mercurial/debugcommands.py Wed Aug 17 21:00:11 2016 -0700 +++ b/mercurial/debugcommands.py Wed Aug 17 21:01:02 2016 -0700 @@ -748,3 +748,104 @@ if pp[1] != nullid: ui.write("\t%d -> %d\n" % (r.rev(pp[1]), i)) ui.write("}\n") + +@command('debugdeltachain', + commands.debugrevlogopts + commands.formatteropts, + _('-c|-m|FILE'), + optionalrepo=True) +def debugdeltachain(ui, repo, file_=None, **opts): + """dump information about delta chains in a revlog + + Output can be templatized. Available template keywords are: + + :``rev``: revision number + :``chainid``: delta chain identifier (numbered by unique base) + :``chainlen``: delta chain length to this revision + :``prevrev``: previous revision in delta chain + :``deltatype``: role of delta / how it was computed + :``compsize``: compressed size of revision + :``uncompsize``: uncompressed size of revision + :``chainsize``: total size of compressed revisions in chain + :``chainratio``: total chain size divided by uncompressed revision size + (new delta chains typically start at ratio 2.00) + :``lindist``: linear distance from base revision in delta chain to end + of this revision + :``extradist``: total size of revisions not part of this delta chain from + base of delta chain to end of this revision; a measurement + of how much extra data we need to read/seek across to read + the delta chain for this revision + :``extraratio``: extradist divided by chainsize; another representation of + how much unrelated data is needed to load this delta chain + """ + r = cmdutil.openrevlog(repo, 'debugdeltachain', file_, opts) + index = r.index + generaldelta = r.version & revlog.REVLOGGENERALDELTA + + def revinfo(rev): + e = index[rev] + compsize = e[1] + uncompsize = e[2] + chainsize = 0 + + if generaldelta: + if e[3] == e[5]: + deltatype = 'p1' + elif e[3] == e[6]: + deltatype = 'p2' + elif e[3] == rev - 1: + deltatype = 'prev' + elif e[3] == rev: + deltatype = 'base' + else: + deltatype = 'other' + else: + if e[3] == rev: + deltatype = 'base' + else: + deltatype = 'prev' + + chain = r._deltachain(rev)[0] + for iterrev in chain: + e = index[iterrev] + chainsize += e[1] + + return compsize, uncompsize, deltatype, chain, chainsize + + fm = ui.formatter('debugdeltachain', opts) + + fm.plain(' rev chain# chainlen prev delta ' + 'size rawsize chainsize ratio lindist extradist ' + 'extraratio\n') + + chainbases = {} + for rev in r: + comp, uncomp, deltatype, chain, chainsize = revinfo(rev) + chainbase = chain[0] + chainid = chainbases.setdefault(chainbase, len(chainbases) + 1) + basestart = r.start(chainbase) + revstart = r.start(rev) + lineardist = revstart + comp - basestart + extradist = lineardist - chainsize + try: + prevrev = chain[-2] + except IndexError: + prevrev = -1 + + chainratio = float(chainsize) / float(uncomp) + extraratio = float(extradist) / float(chainsize) + + fm.startitem() + fm.write('rev chainid chainlen prevrev deltatype compsize ' + 'uncompsize chainsize chainratio lindist extradist ' + 'extraratio', + '%7d %7d %8d %8d %7s %10d %10d %10d %9.5f %9d %9d %10.5f\n', + rev, chainid, len(chain), prevrev, deltatype, comp, + uncomp, chainsize, chainratio, lineardist, extradist, + extraratio, + rev=rev, chainid=chainid, chainlen=len(chain), + prevrev=prevrev, deltatype=deltatype, compsize=comp, + uncompsize=uncomp, chainsize=chainsize, + chainratio=chainratio, lindist=lineardist, + extradist=extradist, extraratio=extraratio) + + fm.end()