Autogenerated HTML docs for v1.8.1-rc2-5-g252f9
diff --git a/technical/send-pack-pipeline.html b/technical/send-pack-pipeline.html index 164f1e2..098f677 100644 --- a/technical/send-pack-pipeline.html +++ b/technical/send-pack-pipeline.html
@@ -2,15 +2,25 @@ "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> <head> -<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> -<meta name="generator" content="AsciiDoc 8.5.2" /> +<meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" /> +<meta name="generator" content="AsciiDoc 8.6.8" /> <title>Git-send-pack internals</title> <style type="text/css"> -/* Debug borders */ -p, li, dt, dd, div, pre, h1, h2, h3, h4, h5, h6 { -/* - border: 1px solid red; -*/ +/* Shared CSS for AsciiDoc xhtml11 and html5 backends */ + +/* Default font. */ +body { + font-family: Georgia,serif; +} + +/* Title font. */ +h1, h2, h3, h4, h5, h6, +div.title, caption.title, +thead, p.table.header, +#toctitle, +#author, #revnumber, #revdate, #revremark, +#footer { + font-family: Arial,Helvetica,sans-serif; } body { @@ -35,13 +45,8 @@ color: #083194; } -tt { - color: navy; -} - h1, h2, h3, h4, h5, h6 { color: #527bbd; - font-family: sans-serif; margin-top: 1.2em; margin-bottom: 0.5em; line-height: 1.3; @@ -59,9 +64,11 @@ h3 + * { clear: left; } +h5 { + font-size: 1.0em; +} div.sectionbody { - font-family: serif; margin-left: 0; } @@ -77,45 +84,48 @@ ul, ol, li > p { margin-top: 0; } +ul > li { color: #aaa; } +ul > li > * { color: black; } -pre { +.monospaced, code, pre { + font-family: "Courier New", Courier, monospace; + font-size: inherit; + color: navy; padding: 0; margin: 0; } -span#author { + +#author { color: #527bbd; - font-family: sans-serif; font-weight: bold; font-size: 1.1em; } -span#email { +#email { } -span#revnumber, span#revdate, span#revremark { - font-family: sans-serif; +#revnumber, #revdate, #revremark { } -div#footer { - font-family: sans-serif; +#footer { font-size: small; border-top: 2px solid silver; padding-top: 0.5em; margin-top: 4.0em; } -div#footer-text { +#footer-text { float: left; padding-bottom: 0.5em; } -div#footer-badges { +#footer-badges { float: right; padding-bottom: 0.5em; } -div#preamble { +#preamble { margin-top: 1.5em; margin-bottom: 1.5em; } -div.tableblock, div.imageblock, div.exampleblock, div.verseblock, +div.imageblock, div.exampleblock, div.verseblock, div.quoteblock, div.literalblock, div.listingblock, div.sidebarblock, div.admonitionblock { margin-top: 1.0em; @@ -135,7 +145,6 @@ /* Block element titles. */ div.title, caption.title { color: #527bbd; - font-family: sans-serif; font-weight: bold; text-align: left; margin-top: 1.0em; @@ -157,13 +166,15 @@ div.sidebarblock > div.content { background: #ffffee; - border: 1px solid silver; + border: 1px solid #dddddd; + border-left: 4px solid #f0f0f0; padding: 0.5em; } div.listingblock > div.content { - border: 1px solid silver; - background: #f4f4f4; + border: 1px solid #dddddd; + border-left: 5px solid #f0f0f0; + background: #f8f8f8; padding: 0.5em; } @@ -171,8 +182,8 @@ padding-left: 1.0em; margin-left: 1.0em; margin-right: 10%; - border-left: 5px solid #dddddd; - color: #777777; + border-left: 5px solid #f0f0f0; + color: #888; } div.quoteblock > div.attribution { @@ -180,8 +191,9 @@ text-align: right; } -div.verseblock > div.content { - white-space: pre; +div.verseblock > pre.content { + font-family: inherit; + font-size: inherit; } div.verseblock > div.attribution { padding-top: 0.75em; @@ -254,35 +266,12 @@ margin-bottom: 0.1em; } -div.tableblock > table { - border: 3px solid #527bbd; -} -thead, p.table.header { - font-family: sans-serif; - font-weight: bold; -} tfoot { font-weight: bold; } td > div.verse { white-space: pre; } -p.table { - margin-top: 0; -} -/* Because the table frame attribute is overriden by CSS in most browsers. */ -div.tableblock > table[frame="void"] { - border-style: none; -} -div.tableblock > table[frame="hsides"] { - border-left-style: none; - border-right-style: none; -} -div.tableblock > table[frame="vsides"] { - border-top-style: none; - border-bottom-style: none; -} - div.hdlist { margin-top: 0.8em; @@ -339,25 +328,32 @@ min-width: 100px; } - -@media print { - div#footer-badges { display: none; } +div.colist td { + padding-right: 0.5em; + padding-bottom: 0.3em; + vertical-align: top; +} +div.colist td img { + margin-top: 0.3em; } -div#toc { +@media print { + #footer-badges { display: none; } +} + +#toc { margin-bottom: 2.5em; } -div#toctitle { +#toctitle { color: #527bbd; - font-family: sans-serif; font-size: 1.1em; font-weight: bold; margin-top: 1.0em; margin-bottom: 0.1em; } -div.toclevel1, div.toclevel2, div.toclevel3, div.toclevel4 { +div.toclevel0, div.toclevel1, div.toclevel2, div.toclevel3, div.toclevel4 { margin-top: 0; margin-bottom: 0; } @@ -373,51 +369,173 @@ margin-left: 6em; font-size: 0.9em; } -/* Workarounds for IE6's broken and incomplete CSS2. */ -div.sidebar-content { - background: #ffffee; - border: 1px solid silver; - padding: 0.5em; +span.aqua { color: aqua; } +span.black { color: black; } +span.blue { color: blue; } +span.fuchsia { color: fuchsia; } +span.gray { color: gray; } +span.green { color: green; } +span.lime { color: lime; } +span.maroon { color: maroon; } +span.navy { color: navy; } +span.olive { color: olive; } +span.purple { color: purple; } +span.red { color: red; } +span.silver { color: silver; } +span.teal { color: teal; } +span.white { color: white; } +span.yellow { color: yellow; } + +span.aqua-background { background: aqua; } +span.black-background { background: black; } +span.blue-background { background: blue; } +span.fuchsia-background { background: fuchsia; } +span.gray-background { background: gray; } +span.green-background { background: green; } +span.lime-background { background: lime; } +span.maroon-background { background: maroon; } +span.navy-background { background: navy; } +span.olive-background { background: olive; } +span.purple-background { background: purple; } +span.red-background { background: red; } +span.silver-background { background: silver; } +span.teal-background { background: teal; } +span.white-background { background: white; } +span.yellow-background { background: yellow; } + +span.big { font-size: 2em; } +span.small { font-size: 0.6em; } + +span.underline { text-decoration: underline; } +span.overline { text-decoration: overline; } +span.line-through { text-decoration: line-through; } + +div.unbreakable { page-break-inside: avoid; } + + +/* + * xhtml11 specific + * + * */ + +div.tableblock { + margin-top: 1.0em; + margin-bottom: 1.5em; } -div.sidebar-title, div.image-title { - color: #527bbd; - font-family: sans-serif; +div.tableblock > table { + border: 3px solid #527bbd; +} +thead, p.table.header { font-weight: bold; - margin-top: 0.0em; - margin-bottom: 0.5em; + color: #527bbd; +} +p.table { + margin-top: 0; +} +/* Because the table frame attribute is overriden by CSS in most browsers. */ +div.tableblock > table[frame="void"] { + border-style: none; +} +div.tableblock > table[frame="hsides"] { + border-left-style: none; + border-right-style: none; +} +div.tableblock > table[frame="vsides"] { + border-top-style: none; + border-bottom-style: none; } -div.listingblock div.content { - border: 1px solid silver; - background: #f4f4f4; - padding: 0.5em; + +/* + * html5 specific + * + * */ + +table.tableblock { + margin-top: 1.0em; + margin-bottom: 1.5em; +} +thead, p.tableblock.header { + font-weight: bold; + color: #527bbd; +} +p.tableblock { + margin-top: 0; +} +table.tableblock { + border-width: 3px; + border-spacing: 0px; + border-style: solid; + border-color: #527bbd; + border-collapse: collapse; +} +th.tableblock, td.tableblock { + border-width: 1px; + padding: 4px; + border-style: solid; + border-color: #527bbd; } -div.quoteblock-attribution { - padding-top: 0.5em; +table.tableblock.frame-topbot { + border-left-style: hidden; + border-right-style: hidden; +} +table.tableblock.frame-sides { + border-top-style: hidden; + border-bottom-style: hidden; +} +table.tableblock.frame-none { + border-style: hidden; +} + +th.tableblock.halign-left, td.tableblock.halign-left { + text-align: left; +} +th.tableblock.halign-center, td.tableblock.halign-center { + text-align: center; +} +th.tableblock.halign-right, td.tableblock.halign-right { text-align: right; } -div.verseblock-content { - white-space: pre; +th.tableblock.valign-top, td.tableblock.valign-top { + vertical-align: top; } -div.verseblock-attribution { - padding-top: 0.75em; - text-align: left; +th.tableblock.valign-middle, td.tableblock.valign-middle { + vertical-align: middle; +} +th.tableblock.valign-bottom, td.tableblock.valign-bottom { + vertical-align: bottom; } -div.exampleblock-content { - border-left: 3px solid #dddddd; - padding-left: 0.5em; + +/* + * manpage specific + * + * */ + +body.manpage h1 { + padding-top: 0.5em; + padding-bottom: 0.5em; + border-top: 2px solid silver; + border-bottom: 2px solid silver; +} +body.manpage h2 { + border-style: none; +} +body.manpage div.sectionbody { + margin-left: 3em; } -/* IE6 sets dynamically generated links as visited. */ -div#toc a:visited { color: blue; } +@media print { + body.manpage div#toc { display: none; } +} + + </style> <script type="text/javascript"> /*<+'])'); + var re = new RegExp('[hH]([1-'+(toclevels+1)+'])'); // Function that scans the DOM tree for header elements (the DOM2 // nodeIterator API would be a better technique but not supported by all // browsers). @@ -479,6 +597,25 @@ } var toc = document.getElementById("toc"); + if (!toc) { + return; + } + + // Delete existing TOC entries in case we're reloading the TOC. + var tocEntriesToRemove = []; + var i; + for (i = 0; i < toc.childNodes.length; i++) { + var entry = toc.childNodes[i]; + if (entry.nodeName.toLowerCase() == 'div' + && entry.getAttribute("class") + && entry.getAttribute("class").match(/^toclevel/)) + tocEntriesToRemove.push(entry); + } + for (i = 0; i < tocEntriesToRemove.length; i++) { + toc.removeChild(tocEntriesToRemove[i]); + } + + // Rebuild TOC entries. var entries = tocEntries(document.getElementById("content"), toclevels); for (var i = 0; i < entries.length; ++i) { var entry = entries[i]; @@ -506,24 +643,44 @@ */ footnotes: function () { - var cont = document.getElementById("content"); + // Delete existing footnote entries in case we're reloading the footnodes. + var i; var noteholder = document.getElementById("footnotes"); + if (!noteholder) { + return; + } + var entriesToRemove = []; + for (i = 0; i < noteholder.childNodes.length; i++) { + var entry = noteholder.childNodes[i]; + if (entry.nodeName.toLowerCase() == 'div' && entry.getAttribute("class") == "footnote") + entriesToRemove.push(entry); + } + for (i = 0; i < entriesToRemove.length; i++) { + noteholder.removeChild(entriesToRemove[i]); + } + + // Rebuild footnote entries. + var cont = document.getElementById("content"); var spans = cont.getElementsByTagName("span"); var refs = {}; var n = 0; for (i=0; i<spans.length; i++) { if (spans[i].className == "footnote") { n++; - // Use [\s\S] in place of . so multi-line matches work. - // Because JavaScript has no s (dotall) regex flag. - note = spans[i].innerHTML.match(/\s*\[([\s\S]*)]\s*/)[1]; + var note = spans[i].getAttribute("data-note"); + if (!note) { + // Use [\s\S] in place of . so multi-line matches work. + // Because JavaScript has no s (dotall) regex flag. + note = spans[i].innerHTML.match(/\s*\[([\s\S]*)]\s*/)[1]; + spans[i].innerHTML = + "[<a id='_footnoteref_" + n + "' href='#_footnote_" + n + + "' title='View footnote' class='footnote'>" + n + "</a>]"; + spans[i].setAttribute("data-note", note); + } noteholder.innerHTML += "<div class='footnote' id='_footnote_" + n + "'>" + "<a href='#_footnoteref_" + n + "' title='Return to text'>" + n + "</a>. " + note + "</div>"; - spans[i].innerHTML = - "[<a id='_footnoteref_" + n + "' href='#_footnote_" + n + - "' title='View footnote' class='footnote'>" + n + "</a>]"; var id =spans[i].getAttribute("id"); if (id != null) refs["#"+id] = n; } @@ -543,17 +700,41 @@ } } } +}, + +install: function(toclevels) { + var timerId; + + function reinstall() { + asciidoc.footnotes(); + if (toclevels) { + asciidoc.toc(toclevels); + } + } + + function reinstallAndRemoveTimer() { + clearInterval(timerId); + reinstall(); + } + + timerId = setInterval(reinstall, 500); + if (document.addEventListener) + document.addEventListener("DOMContentLoaded", reinstallAndRemoveTimer, false); + else + window.onload = reinstallAndRemoveTimer; } } +asciidoc.install(); /*]]>*/ </script> </head> -<body> +<body class="article"> <div id="header"> <h1>Git-send-pack internals</h1> </div> <div id="content"> +<div class="sect1"> <h2 id="_overall_operation">Overall operation</h2> <div class="sectionbody"> <div class="olist arabic"><ol class="arabic"> @@ -596,14 +777,16 @@ </li> </ol></div> </div> +</div> +<div class="sect1"> <h2 id="_pack_objects_pipeline">Pack_objects pipeline</h2> <div class="sectionbody"> -<div class="paragraph"><p>This function gets one file descriptor (<tt>fd</tt>) which is either a +<div class="paragraph"><p>This function gets one file descriptor (<code>fd</code>) which is either a socket (over the network) or a pipe (local). What’s written to this fd goes to git-receive-pack to be unpacked.</p></div> <div class="literalblock"> <div class="content"> -<pre><tt>send-pack ---> fd ---> receive-pack</tt></pre> +<pre><code>send-pack ---> fd ---> receive-pack</code></pre> </div></div> <div class="paragraph"><p>The function pack_objects creates a pipe and then forks. The forked child execs pack-objects with --revs to receive revision @@ -611,12 +794,12 @@ packfile to the other end.</p></div> <div class="literalblock"> <div class="content"> -<pre><tt>send-pack +<pre><code>send-pack | pack_objects() ---> fd ---> receive-pack | ^ (pipe) v | - (child)</tt></pre> + (child)</code></pre> </div></div> <div class="paragraph"><p>The child dup2’s to arrange its standard output to go back to the other end, and read its standard input to come from the @@ -625,21 +808,22 @@ closes the reading side of the pipe and fd to receive-pack.</p></div> <div class="literalblock"> <div class="content"> -<pre><tt>send-pack +<pre><code>send-pack | pack_objects(parent) | v [0] - pack-objects [0] ---> receive-pack</tt></pre> + pack-objects [0] ---> receive-pack</code></pre> </div></div> <div class="paragraph"><p>[jc: the pipeline was much more complex and needed documentation before I understood an earlier bug, but now it is trivial and straightforward.]</p></div> </div> </div> +</div> <div id="footnotes"><hr /></div> <div id="footer"> <div id="footer-text"> -Last updated 2012-11-20 13:06:02 PDT +Last updated 2012-11-20 13:06:02 PST </div> </div> </body> 