From: Eric Wong <e@80x24.org>
To: meta@public-inbox.org
Subject: [PATCH 25/38] view: switch a few things to ctx->zmore
Date: Sat, 10 Sep 2022 08:17:16 +0000 [thread overview]
Message-ID: <20220910081729.2011934-26-e@80x24.org> (raw)
In-Reply-To: <20220910081729.2011934-1-e@80x24.org>
Unfortunately, this is actually slower. However, this
hopefully makes it easier to improve the internals and
make performance improvements down the line.
---
lib/PublicInbox/View.pm | 14 +++++-------
lib/PublicInbox/ViewDiff.pm | 45 +++++++++++++++++--------------------
2 files changed, 27 insertions(+), 32 deletions(-)
diff --git a/lib/PublicInbox/View.pm b/lib/PublicInbox/View.pm
index 2f99179e..3dbf8bac 100644
--- a/lib/PublicInbox/View.pm
+++ b/lib/PublicInbox/View.pm
@@ -560,7 +560,7 @@ sub add_text_body { # callback for each_part
my ($part, $depth, $idx) = @$p;
my $ct = $part->content_type || 'text/plain';
my $fn = $part->filename;
- my $rv = $ctx->{obuf};
+ my $rv = $ctx->{obuf} //= \(my $obuf = '');
my ($s, $err) = msg_part_text($part, $ct);
$s // return $$rv .= (attach_link($ctx, $ct, $p, $fn) // '');
if ($part->{is_submsg}) {
@@ -618,18 +618,16 @@ sub add_text_body { # callback for each_part
$$rv .= "\n";
}
delete $part->{bdy}; # save memory
- foreach my $cur (@sections) {
+ for my $cur (@sections) { # $cur may be huge
if ($cur =~ /\A>/) {
# we use a <span> here to allow users to specify
# their own color for quoted text
- $$rv .= qq(<span\nclass="q">);
- $$rv .= $l->to_html($cur);
- $$rv .= '</span>';
+ $ctx->zmore(qq(<span\nclass="q">),
+ $l->to_html($cur), '</span>');
} elsif ($diff) {
flush_diff($ctx, \$cur);
- } else {
- # regular lines, OK
- $$rv .= $l->to_html($cur);
+ } else { # regular lines, OK
+ $ctx->zmore($l->to_html($cur));
}
undef $cur; # free memory
}
diff --git a/lib/PublicInbox/ViewDiff.pm b/lib/PublicInbox/ViewDiff.pm
index 076aa1af..36601910 100644
--- a/lib/PublicInbox/ViewDiff.pm
+++ b/lib/PublicInbox/ViewDiff.pm
@@ -156,10 +156,7 @@ sub diff_header ($$$) {
warn "BUG? <$$x> had no ^index line";
}
$$x =~ s!^diff --git!anchor1($ctx, $pb) // 'diff --git'!ems;
- my $dst = $ctx->{obuf};
- $$dst .= qq(<span\nclass="head">);
- $$dst .= $$x;
- $$dst .= '</span>';
+ $ctx->zmore(qq(<span\nclass="head">$$x</span>));
$dctx;
}
@@ -182,9 +179,10 @@ sub diff_before_or_after ($$) {
my $ch = $ctx->{changed_href} // '#related';
$$x .= qq(<a href="$ch">changed</a>,);
$$x .= ascii_html(pop @x); # $4: insertions/deletions
- $$x .= $lnk->to_html(pop @x); # notes, commit message, etc
+ # notes, commit message, etc
+ $ctx->zmore($$x .= $lnk->to_html(pop @x));
} else {
- $ctx->{-linkify}->to_html($$x);
+ $ctx->zmore($ctx->{-linkify}->to_html($$x));
}
}
@@ -195,8 +193,7 @@ sub flush_diff ($$) {
my @top = split($EXTRACT_DIFFS, $$cur);
undef $$cur; # free memory
- my $linkify = $ctx->{-linkify};
- my $dst = $ctx->{obuf};
+ my $lnk = $ctx->{-linkify};
my $dctx; # {}, keys: Q, oid_a, oid_b
while (defined(my $x = shift @top)) {
@@ -223,28 +220,28 @@ sub flush_diff ($$) {
if (!defined($dctx)) {
$after .= $s;
} elsif ($s =~ s/\A@@ (\S+) (\S+) @@//) {
- $$dst .= qq(<span\nclass="hunk">);
- $$dst .= diff_hunk($dctx, $1, $2);
- $$dst .= $linkify->to_html($s);
- $$dst .= '</span>';
- } elsif ($s =~ /\A\+/) {
- $$dst .= qq(<span\nclass="add">);
- $$dst .= $linkify->to_html($s);
- $$dst .= '</span>';
+ $ctx->zmore(qq(<span\nclass="hunk">) .
+ diff_hunk($dctx, $1, $2) .
+ $lnk->to_html($s) .
+ '</span>');
+ } elsif ($s =~ /\A\+/) { # $s may be huge
+ $ctx->zmore(qq(<span\nclass="add">),
+ $lnk->to_html($s),
+ '</span>');
} elsif ($s =~ /\A-- $/sm) { # email sig starts
$dctx = undef;
$after .= $s;
- } elsif ($s =~ /\A-/) {
- $$dst .= qq(<span\nclass="del">);
- $$dst .= $linkify->to_html($s);
- $$dst .= '</span>';
- } else {
- $$dst .= $linkify->to_html($s);
+ } elsif ($s =~ /\A-/) { # $s may be huge
+ $ctx->zmore(qq(<span\nclass="del">),
+ $lnk->to_html($s),
+ '</span>');
+ } else { # $s may be huge
+ $ctx->zmore($lnk->to_html($s));
}
}
- $$dst .= diff_before_or_after($ctx, \$after) if !$dctx;
+ diff_before_or_after($ctx, \$after) if !$dctx;
} else {
- $$dst .= diff_before_or_after($ctx, \$x);
+ diff_before_or_after($ctx, \$x);
}
}
}
next prev parent reply other threads:[~2022-09-10 8:18 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-10 8:16 [PATCH 00/38] www: reduce memory usage Eric Wong
2022-09-10 8:16 ` [PATCH 01/38] xt: fold perf-obfuscate into perf-msgview, future-proof Eric Wong
2022-09-10 8:16 ` [PATCH 02/38] www: gzip_filter: implicitly flush {obuf} on zmore/zflush Eric Wong
2022-09-10 8:16 ` [PATCH 03/38] view: rework single message page to compress earlier Eric Wong
2022-09-10 8:16 ` [PATCH 04/38] www_atom_stream: require 200 response Eric Wong
2022-09-10 8:16 ` [PATCH 05/38] www_stream: aresponse assumes 200, too Eric Wong
2022-09-10 8:16 ` [PATCH 06/38] www_text: reduce parameter passing for response header Eric Wong
2022-09-10 8:16 ` [PATCH 07/38] viewvcs: use shorter and simpler ctx->html_done Eric Wong
2022-09-10 8:16 ` [PATCH 08/38] www_listing: consolidate some ->zmore dispatches Eric Wong
2022-09-10 8:17 ` [PATCH 09/38] www_listing: avoid unnecessary work for common cases Eric Wong
2022-09-10 8:17 ` [PATCH 10/38] www: viewdiff: use return value for diff_hunk Eric Wong
2022-09-10 8:17 ` [PATCH 11/38] view: simplify _parent_headers Eric Wong
2022-09-10 8:17 ` [PATCH 12/38] view: eml_entry: reduce manipulation of ctx->{obuf} Eric Wong
2022-09-10 8:17 ` [PATCH 13/38] gzip_filter: ->translate can reuse zmore/zflush Eric Wong
2022-09-10 8:17 ` [PATCH 14/38] view: remove multipart_text_as_html Eric Wong
2022-09-10 8:17 ` [PATCH 15/38] view: reduce subroutine calls for submsg_hdr Eric Wong
2022-09-10 8:17 ` [PATCH 16/38] view: attach_link: reduce obuf manipulation Eric Wong
2022-09-10 8:17 ` [PATCH 17/38] viewdiff: reuse existing string in diff_before_or_after Eric Wong
2022-09-10 8:17 ` [PATCH 18/38] view: _th_index_lite: avoid one s///, improve symmetry Eric Wong
2022-09-10 8:17 ` [PATCH 19/38] view: _th_index_lite: use `//' defined-or op Eric Wong
2022-09-10 8:17 ` [PATCH 20/38] view: reduce ascii_html calls and {obuf} use Eric Wong
2022-09-10 8:17 ` [PATCH 21/38] view: html_footer: golf out a few lines Eric Wong
2022-09-10 8:17 ` [PATCH 22/38] view: html_footer: remove obuf dependency Eric Wong
2022-09-10 8:17 ` [PATCH 23/38] view: html_footer: avoid escaping " in a few places Eric Wong
2022-09-10 8:17 ` [PATCH 24/38] viewdiff: diff_hunk: shorten conditionals, slightly Eric Wong
2022-09-10 8:17 ` Eric Wong [this message]
2022-09-10 8:17 ` [PATCH 26/38] www: drop {obuf} use entirely, for now Eric Wong
2022-09-10 8:17 ` [PATCH 27/38] www: switch to zadd for the majority of buffering Eric Wong
2022-09-10 8:17 ` [PATCH 28/38] www: use PerlIO::scalar (zfh) for buffering Eric Wong
2022-09-10 8:17 ` [PATCH 29/38] viewdiff: diff_before_or_after: avoid extra capture Eric Wong
2022-09-10 8:17 ` [PATCH 30/38] viewdiff: diff_header: shorten function, slightly Eric Wong
2022-09-10 8:17 ` [PATCH 31/38] www_static: switch to `print $zfh', and optimize Eric Wong
2022-09-10 8:17 ` [PATCH 32/38] httpd/async: describe which ->write subs it can call Eric Wong
2022-09-10 8:17 ` [PATCH 33/38] translate: support multiple buffer args Eric Wong
2022-09-10 8:17 ` [PATCH 34/38] gzip_filter: write: use multi-arg translate Eric Wong
2022-09-10 8:17 ` [PATCH 35/38] feed: new_html_i: switch from zmore to `print $zfh' Eric Wong
2022-09-10 8:17 ` [PATCH 36/38] mbox*: use multi-arg ->translate and ->write Eric Wong
2022-09-10 8:17 ` [PATCH 37/38] www_listing: switch to `print $zfh' Eric Wong
2022-09-10 8:17 ` [PATCH 38/38] viewvcs: " Eric Wong
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