view doc/style.css @ 40030:62160d3077cd

cborutil: change buffering strategy

Profiling revealed that we were spending a lot of time on the
line that was concatenating the old buffer with the incoming data
when attempting to decode long byte strings, such as manifest
revisions.

Essentially, we were feeding N chunks of size len(X) << len(Y) into
decode() and continuously allocating a new, larger buffer to hold
the undecoded input. This created substantial memory churn and
slowed down execution.

Changing the code to aggregate pending chunks in a list until we
have enough data to fully decode the next atom makes things much
more efficient.

I don't have exact data, but I recall the old code spending >1s
on manifest fulltexts from the mozilla-unified repo. The new code
doesn't significantly appear in profile output.

Differential Revision: https://phab.mercurial-scm.org/D4854

/*
 * Styles for man pages, which match with https://mercurial-scm.org/
 *
 * Color scheme & layout are borrowed from
 * https://mercurial-scm.org/css/styles.css
 *
 * Some styles are from html4css1.css from Docutils, which is in the
 * public domain.
 */

body {
    margin: 0;
    padding: 0;
    font-family: sans-serif;
}

.document {
    position: relative;  /* be a top of absolute positioning */
    margin: 1.5em 1.8em;
    padding: 0;
    line-height: 1.3;
}

/* layout: toc to right */
#contents {
    position: absolute;
    right: 0;
    top: 0;
    width: 26%;
}

/* layout: others to left */
h1.title, h2.subtitle, .section { width: 72%; }
.section .section { width: auto; }
table.docinfo { max-width: 72%; }

/* headings */
h1, h2, .topic-title, .admonition-title {
    font-family: "MgOpen Cosmetica", "Lucida Sans Unicode", sans-serif;
    font-weight: normal;
}
h1, h2, .topic-title, .admonition-title {
    margin: 1em 0 0.5em;
}
h1.title { font-size: 300%; }
h2.subtitle, h1 { font-size: 200%; }
h2, .topic-title, .admonition-title { font-size: 140%; }

/* subtitle starts with lowercase in man pages, but not in HTML */
h2.subtitle:first-letter { text-transform: uppercase; }

/* override first/last margin */
.first, h1.title, h2.subtitle { margin-top: 0 !important; }
.last, .with-subtitle { margin-bottom: 0 !important; }

blockquote, pre, dd .option-list, .field-list {
    margin: 0.2em 0 1em 2em;
}

kbd, tt, pre { font-family: monospace; }

dt { font-weight: bold; }
dd { margin-bottom: 0.5em; }

th, td { padding: 0.1em 0.2em; border: 0 none; }
th { font-weight: bold; text-align: left; }

a:link, a:visited { text-decoration: underline; }
a:hover, a:focus { text-decoration: none; }
a:link { color: #00b5f1; }
a:visited { color: #5c9caf; }
a:link.toc-backref, a:visited.toc-backref {
    text-decoration: none;
    color: inherit;  /* NOTE: `inherit' is not supported by IE6 */
}

div.admonition, div.attention, div.caution,
div.danger, div.error, div.hint, div.important,
div.note, div.tip, div.warning {
    border-top: 1px #ccc solid;
    border-bottom: 1px #ccc solid;
    padding: 0.3em 1em;
    margin: 1em;
}

div.note {
    border-color: #fcc200;
}


/*
 * The following styles are from Docutils.
 * Please refine if necessary.
 */

table.borderless td, table.borderless th {
    /* Override padding for "table.docutils td" with "! important".
       The right padding separates the table cells. */
    padding: 0 0.5em 0 0 ! important;
}

.hidden {
    display: none;
}

blockquote.epigraph {
    margin: 2em 5em;
}

div.abstract {
    margin: 2em 5em;
}

div.dedication {
    margin: 2em 5em;
    text-align: center;
    font-style: italic;
}

div.figure {
    margin-left: 2em;
    margin-right: 2em;
}

div.footer, div.header {
    clear: both;
    font-size: smaller;
}

div.line-block {
    display: block;
    margin-top: 1em;
    margin-bottom: 1em;
}

div.line-block div.line-block {
    margin-top: 0;
    margin-bottom: 0;
    margin-left: 1.5em;
}

div.sidebar {
    margin: 0 0 0.5em 1em;
    border: medium outset;
    padding: 1em;
    background-color: #ffffee;
    width: 40%;
    float: right;
    clear: right;
}

div.sidebar p.rubric {
    font-family: sans-serif;
    font-size: medium;
}

div.system-messages {
    margin: 5em;
}

div.system-messages h1 {
    color: red;
}

div.system-message {
    border: medium outset;
    padding: 1em;
}

div.system-message p.system-message-title {
    color: red;
    font-weight: bold;
}

h1.section-subtitle, h2.section-subtitle, h3.section-subtitle,
h4.section-subtitle, h5.section-subtitle, h6.section-subtitle {
    margin-top: 0.4em;
}

hr.docutils {
    width: 75%;
}

img.align-left {
    clear: left;
}

img.align-right {
    clear: right;
}

ol.simple, ul.simple {
    margin-bottom: 1em;
}

ol.arabic {
    list-style: decimal;
}

ol.loweralpha {
    list-style: lower-alpha;
}

ol.upperalpha {
    list-style: upper-alpha;
}

ol.lowerroman {
    list-style: lower-roman;
}

ol.upperroman {
    list-style: upper-roman;
}

p.attribution {
    text-align: right;
    margin-left: 50%;
}

p.caption {
    font-style: italic;
}

p.credits {
    font-style: italic;
    font-size: smaller;
}

p.label {
    white-space: nowrap;
}

p.rubric {
    font-weight: bold;
    font-size: larger;
    color: maroon;
    text-align: center;
}

pre.address {
    margin-bottom: 0;
    margin-top: 0;
    font-family: serif;
    font-size: 100%;
}

pre.literal-block, pre.doctest-block {
    margin-left: 2em;
    margin-right: 2em;
}

span.classifier {
    font-family: sans-serif;
    font-style: oblique;
}

span.classifier-delimiter {
    font-family: sans-serif;
    font-weight: bold;
}

span.interpreted {
    font-family: sans-serif;
}

span.option {
    white-space: nowrap;
}

span.pre {
    white-space: pre;
}

span.problematic {
    color: red;
}

span.section-subtitle {
    /* font-size relative to parent (h1..h6 element) */
    font-size: 80%;
}

table.citation {
    border-left: solid 1px gray;
    margin-left: 1px;
}

table.footnote {
    border-left: solid 1px black;
    margin-left: 1px;
}

h1 tt.docutils, h2 tt.docutils, h3 tt.docutils,
h4 tt.docutils, h5 tt.docutils, h6 tt.docutils {
    font-size: 100%;
}

ul.auto-toc {
    list-style-type: none;
}

div.contents.local {
    -moz-column-width: 10em;
    -moz-column-gap: 1em;

    -webkit-column-width: 10em;
    -webkit-column-gap: 1em;
}