in_workarea sub { playtree_setup };
}
+sub run_ref_updates_now ($$) {
+ my ($mrest, $updates) = @_;
+ # @$updates is a list of lines for git-update-ref, without \ns
+
+ my @upd_cmd = (git_update_ref_cmd "debrebase: $mrest", qw(--stdin));
+ debugcmd '>|', @upd_cmd;
+ open U, "|-", @upd_cmd or die $!;
+ foreach (@$updates) {
+ printdebug ">= ", $_, "\n";
+ print U $_, "\n" or die $!;
+ }
+ printdebug ">\$\n";
+ close U or failedcmd @upd_cmd;
+}
+
our $snags_forced = 0;
our $snags_tripped = 0;
our $snags_summarised = 0;
confess 'dangerous internal error' unless all_snags_summarised();
- my @upd_cmd = (git_update_ref_cmd "debrebase: $mrest", qw(--stdin));
- debugcmd '>|', @upd_cmd;
- open U, "|-", @upd_cmd or die $!;
- foreach (@deferred_updates) {
- printdebug ">= ", $_, "\n";
- print U $_, "\n" or die $!;
- }
- printdebug ">\$\n";
- close U or failedcmd @upd_cmd;
-
+ run_ref_updates_now $mrest, \@deferred_updates;
print $_, "\n" foreach @deferred_update_messages;
@deferred_updates = ();
{ local ($!,$?); copy('../gbp-pq-err', \*STDERR); }
failedcmd @gbp_cmd;
}
- runcmd @git, qw(add -f debian/patches);
+ runcmd @git, qw(add -f debian/patches) if stat_exists 'debian/patches';
}
# our own patch identification algorithm?
# this is an alternative strategy
-sub merge_series ($$;@) {
- my ($newbase, $base_q, @input_qs) = @_;
+sub mwrecknote ($$$) {
+ my ($wrecknotes, $reftail, $commitish) = @_;
+ confess unless defined $commitish;
+ printdebug "mwrecknote $reftail $commitish\n";
+ $wrecknotes->{$reftail} = $commitish;
+}
+
+sub merge_series ($$$;@) {
+ my ($newbase, $wrecknotes, $base_q, @input_qs) = @_;
# $base_q{SeriesBase} $input_qs[]{SeriesBase}
# $base_q{SeriesTip} $input_qs[]{SeriesTip}
# ^ specifies several patch series (currently we only support exactly 2)
my $result;
+ my $mwrecknote = sub { &mwrecknote($wrecknotes, @_); };
+
local $workarea = fresh_playground "$playprefix/merge";
my $seriesfile = "debian/patches/series";
in_workarea sub {
" $q->{SeriesTip}]"
];
printdebug "merge_series pec $pec ";
- runcmd @git, qw(rm -q --cached), $seriesfile;
+ runcmd @git, qw(rm -q --ignore-unmatch --cached), $seriesfile;
$pec = make_commit [ $pec ], [
"Drop series file from $s to avoid merge trouble",
"[git-debrebase merge-innards patch-queue prep:".
printdebug "pec' $pec\n";
runcmd @git, qw(reset -q --hard), $pec;
$q->{MR}{PEC} = $pec;
+ $mwrecknote->("$q->{LeftRight}-patchqueue", $pec);
}
# now, because of reverse, we are on $input_q->{MR}{OQC}
runcmd @git, qw(checkout -q -b merge);
}
runcmd @git, qw(add), $seriesfile;
- runcmd @git, qw(commit --quiet -m), 'Merged series';
+ runcmd @git, qw(commit --quiet -m), 'Merged patch queue form';
+ $mwrecknote->('merged-patchqueue', git_rev_parse 'HEAD');
printdebug "merge_series series gbp pq import\n";
runcmd qw(gbp pq import);
$build = cmdoutput @git, qw(hash-object -w -t commit ../mcommit);
}
$result = $build;
+ $mwrecknote->('merged-result', $result);
+
runcmd @git, qw(update-ref refs/heads/result), $result;
runcmd @git, qw(checkout -q -b debug);
runcmd @git, qw(commit --allow-empty -q -m M-INDEX);
runcmd @git, qw(add .);
runcmd @git, qw(commit --allow-empty -q -m M-WORKTREE);
- printdebug sprintf "merge_series done debug=%s\n",
- git_rev_parse 'HEAD';
+ my $mdebug = git_rev_parse 'HEAD';
+ printdebug sprintf "merge_series done debug=%s\n", $mdebug;
+ $mwrecknote->('merged-debug', $mdebug);
};
printdebug "merge_series returns $result\n";
return $result;
fail "something useful about failed merge attempt @_ xxx".Dumper($cl);
};
+ my $mwrecknote = sub { &mwrecknote($cl->{MergeWreckNotes}, @_); };
+
my $last_anchor;
for (;;) {
$cl = classify $cur;
+ $cl->{MergeWreckNotes} //= {};
my $ty = $cl->{Type};
my $st = $cl->{SubType};
$prline->("$cl->{CommitId} $cl->{Type}");
my $ps = $cl->{Parents};
+ $mwrecknote->('vanilla-merge', $cl->{CommitId});
+
foreach my $p (@$ps) {
$prline->(" VanillaMerge ".$p->{Ix});
$prprdelim->();
$p->{Breakwater} = $p->{SeriesBase} = $pbw;
$p->{Anchor} = $panchor;
+ my $lr = $p->{LeftRight} = (qw(left right))[$p->{Ix}];
+ $mwrecknote->("$lr-input", $p->{CommitId});
+
+ my $mwrecknote_parent = sub {
+ my ($which) = @_;
+ $mwrecknote->("$lr-".(lc $which), $p->{$which});
+ };
+ $mwrecknote_parent->('Laundered');
+ $mwrecknote_parent->('Breakwater');
+ $mwrecknote_parent->('Anchor');
+
$best_anchor = $panchor if
!defined $best_anchor or
is_fast_fwd $best_anchor, $panchor;
" p=$panchor\n";
}
+ $mwrecknote->('result-anchor', $best_anchor);
+
foreach my $p (@$ps) {
$prline->(" VanillaMerge ".$p->{Ix});
if (!is_fast_fwd $p->{Anchor}, $best_anchor) {
@ibs or confess 'internal error, expected anchor at least ?';
my $ib;
+ my $ibleaf;
foreach my $tibix (0..$#ibs) {
my $tib = $ibs[$tibix];
my $ff = is_fast_fwd $bwb, $tib;
+ my $ok = !$ff ? 'rej' : $ib ? 'extra' : 'ok';
+ my $tibleaf = "interchange-mbcand-$ok-$tibix";
+ $mwrecknote->($tibleaf, $tib);
next unless $ff;
next if $ib;
$ib = $tib;
+ $ibleaf = $tibleaf;
}
$ib or $nomerge->("no suitable interchange merge base");
$prline->(" VanillaMerge Base");
$prprdelim->();
- my ($btip, $bbw, $banchor) =
+ my ($btip, $bbw, $banchor) = eval {
walk $ib, 0, $report, $report_lprefix.' ';
+ };
+ $nomerge->("walking interchange branch merge base ($ibleaf): ".
+ $@) if length $@;
+
+ $mwrecknote->("mergebase-laundered", $btip);
+ $mwrecknote->("mergebase-breakwater", $bbw);
+ $mwrecknote->("mergebase-anchor", $banchor);
my $ibinfo = { SeriesTip => $btip,
SeriesBase => $bbw,
- Anchor => $banchor };
+ Anchor => $banchor,
+ LeftRight => 'mergebase' };
+
$bbw eq $bwb
or $nomerge->("interchange merge-base ($ib)'s".
" breakwater ($bbw)".
" != breakwaters' merge-base ($bwb)");
+
grep { $_->{Anchor} eq $ibinfo->{Anchor} } @$ps
or $nomerge->("interchange merge-base ($ib)'s".
" anchor ($ibinfo->{SeriesBase})".
(join ' ', map { $_->{Anchor} } @$ps).
")");
-
$cl->{MergeInterchangeBaseInfo} = $ibinfo;
$cl->{MergeBestAnchor} = $best_anchor;
push @brw_cl, {
} elsif ($method eq 'MergeMergeSeries') {
print "Running merge resolution for $cl->{CommitId}...\n";
$build = merge_series
- $build,
+ $build, $cl->{MergeWreckNotes},
$cl->{MergeInterchangeBaseInfo},
@{ $cl->{Parents} };
$last_anchor = $cl->{MergeBestAnchor};
~ianmdlvl / dgit.git / blobdiff