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419 lines
17 KiB
419 lines
17 KiB
<?xml version="1.0" standalone="no"?><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"><svg version="1.1" width="1200" height="182" onload="init(evt)" viewBox="0 0 1200 182" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><!--Flame graph stack visualization. See https://github.com/brendangregg/FlameGraph for latest version, and http://www.brendangregg.com/flamegraphs.html for examples.--><!--NOTES: --><defs><linearGradient id="background" y1="0" y2="1" x1="0" x2="0"><stop stop-color="#eeeeee" offset="5%"/><stop stop-color="#eeeeb0" offset="95%"/></linearGradient></defs><style type="text/css">
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text { font-family:"Verdana"; font-size:12px; fill:rgb(0,0,0); }
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#title { text-anchor:middle; font-size:17px; }
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#search { opacity:0.1; cursor:pointer; }
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#search:hover, #search.show { opacity:1; }
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#subtitle { text-anchor:middle; font-color:rgb(160,160,160); }
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#unzoom { cursor:pointer; }
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#frames > *:hover { stroke:black; stroke-width:0.5; cursor:pointer; }
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.hide { display:none; }
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.parent { opacity:0.5; }
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</style><script type="text/ecmascript"><![CDATA[var nametype = 'Function:';
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var fontsize = 12;
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var fontwidth = 0.59;
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var xpad = 10;
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var inverted = false;
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var searchcolor = 'rgb(230,0,230)';
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var fluiddrawing = true;
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var truncate_text_right = false;]]><![CDATA["use strict";
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var details, searchbtn, unzoombtn, matchedtxt, svg, searching, frames;
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function init(evt) {
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details = document.getElementById("details").firstChild;
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searchbtn = document.getElementById("search");
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unzoombtn = document.getElementById("unzoom");
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matchedtxt = document.getElementById("matched");
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svg = document.getElementsByTagName("svg")[0];
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frames = document.getElementById("frames");
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searching = 0;
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// Use GET parameters to restore a flamegraph's state.
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var restore_state = function() {
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var params = get_params();
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if (params.x && params.y)
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zoom(find_group(document.querySelector('[x="' + params.x + '"][y="' + params.y + '"]')));
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if (params.s)
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search(params.s);
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};
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if (fluiddrawing) {
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// Make width dynamic so the SVG fits its parent's width.
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svg.removeAttribute("width");
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// Edge requires us to have a viewBox that gets updated with size changes.
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var isEdge = /Edge\/\d./i.test(navigator.userAgent);
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if (!isEdge) {
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svg.removeAttribute("viewBox");
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}
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var update_for_width_change = function() {
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if (isEdge) {
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svg.attributes.viewBox.value = "0 0 " + svg.width.baseVal.value + " " + svg.height.baseVal.value;
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}
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// Keep consistent padding on left and right of frames container.
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frames.attributes.width.value = svg.width.baseVal.value - xpad * 2;
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// Text truncation needs to be adjusted for the current width.
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var el = frames.children;
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for(var i = 0; i < el.length; i++) {
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update_text(el[i]);
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}
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// Keep search elements at a fixed distance from right edge.
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var svgWidth = svg.width.baseVal.value;
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searchbtn.attributes.x.value = svgWidth - xpad - 100;
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matchedtxt.attributes.x.value = svgWidth - xpad - 100;
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};
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window.addEventListener('resize', function() {
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update_for_width_change();
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});
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// This needs to be done asynchronously for Safari to work.
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setTimeout(function() {
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unzoom();
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update_for_width_change();
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restore_state();
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}, 0);
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} else {
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restore_state();
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}
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}
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// event listeners
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window.addEventListener("click", function(e) {
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var target = find_group(e.target);
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if (target) {
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if (target.nodeName == "a") {
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if (e.ctrlKey === false) return;
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e.preventDefault();
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}
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if (target.classList.contains("parent")) unzoom();
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zoom(target);
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// set parameters for zoom state
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var el = target.querySelector("rect");
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if (el && el.attributes && el.attributes.y && el.attributes._orig_x) {
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var params = get_params()
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params.x = el.attributes._orig_x.value;
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params.y = el.attributes.y.value;
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history.replaceState(null, null, parse_params(params));
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}
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}
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else if (e.target.id == "unzoom") {
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unzoom();
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// remove zoom state
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var params = get_params();
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if (params.x) delete params.x;
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if (params.y) delete params.y;
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history.replaceState(null, null, parse_params(params));
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}
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else if (e.target.id == "search") search_prompt();
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}, false)
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// mouse-over for info
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// show
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window.addEventListener("mouseover", function(e) {
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var target = find_group(e.target);
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if (target) details.nodeValue = nametype + " " + g_to_text(target);
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}, false)
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// clear
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window.addEventListener("mouseout", function(e) {
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var target = find_group(e.target);
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if (target) details.nodeValue = ' ';
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}, false)
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// ctrl-F for search
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window.addEventListener("keydown",function (e) {
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if (e.keyCode === 114 || (e.ctrlKey && e.keyCode === 70)) {
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e.preventDefault();
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search_prompt();
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}
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}, false)
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// functions
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function get_params() {
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var params = {};
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var paramsarr = window.location.search.substr(1).split('&');
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for (var i = 0; i < paramsarr.length; ++i) {
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var tmp = paramsarr[i].split("=");
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if (!tmp[0] || !tmp[1]) continue;
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params[tmp[0]] = decodeURIComponent(tmp[1]);
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}
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return params;
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}
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function parse_params(params) {
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var uri = "?";
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for (var key in params) {
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uri += key + '=' + encodeURIComponent(params[key]) + '&';
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}
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if (uri.slice(-1) == "&")
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uri = uri.substring(0, uri.length - 1);
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if (uri == '?')
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uri = window.location.href.split('?')[0];
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return uri;
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}
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function find_child(node, selector) {
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var children = node.querySelectorAll(selector);
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if (children.length) return children[0];
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return;
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}
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function find_group(node) {
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var parent = node.parentElement;
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if (!parent) return;
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if (parent.id == "frames") return node;
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return find_group(parent);
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}
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function orig_save(e, attr, val) {
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if (e.attributes["_orig_" + attr] != undefined) return;
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if (e.attributes[attr] == undefined) return;
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if (val == undefined) val = e.attributes[attr].value;
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e.setAttribute("_orig_" + attr, val);
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}
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function orig_load(e, attr) {
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if (e.attributes["_orig_"+attr] == undefined) return;
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e.attributes[attr].value = e.attributes["_orig_" + attr].value;
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e.removeAttribute("_orig_" + attr);
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}
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function g_to_text(e) {
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var text = find_child(e, "title").firstChild.nodeValue;
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return (text)
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}
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function g_to_func(e) {
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var func = g_to_text(e);
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// if there's any manipulation we want to do to the function
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// name before it's searched, do it here before returning.
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return (func);
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}
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function update_text(e) {
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var r = find_child(e, "rect");
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var t = find_child(e, "text");
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var w = parseFloat(r.attributes.width.value) * frames.attributes.width.value / 100 - 3;
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var txt = find_child(e, "title").textContent.replace(/\([^(]*\)$/,"");
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t.attributes.x.value = format_percent((parseFloat(r.attributes.x.value) + (100 * 3 / frames.attributes.width.value)));
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// Smaller than this size won't fit anything
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if (w < 2 * fontsize * fontwidth) {
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t.textContent = "";
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return;
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}
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t.textContent = txt;
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// Fit in full text width
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if (/^ *\$/.test(txt) || t.getComputedTextLength() < w)
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return;
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if (truncate_text_right) {
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// Truncate the right side of the text.
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for (var x = txt.length - 2; x > 0; x--) {
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if (t.getSubStringLength(0, x + 2) <= w) {
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t.textContent = txt.substring(0, x) + "..";
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return;
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}
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}
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} else {
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// Truncate the left side of the text.
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for (var x = 2; x < txt.length; x++) {
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if (t.getSubStringLength(x - 2, txt.length) <= w) {
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t.textContent = ".." + txt.substring(x, txt.length);
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return;
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}
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}
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}
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t.textContent = "";
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}
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// zoom
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function zoom_reset(e) {
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if (e.attributes != undefined) {
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orig_load(e, "x");
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orig_load(e, "width");
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}
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if (e.childNodes == undefined) return;
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for(var i = 0, c = e.childNodes; i < c.length; i++) {
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zoom_reset(c[i]);
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}
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}
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function zoom_child(e, x, ratio) {
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if (e.attributes != undefined) {
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if (e.attributes.x != undefined) {
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orig_save(e, "x");
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e.attributes.x.value = format_percent((parseFloat(e.attributes.x.value) - x) * ratio);
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if (e.tagName == "text") {
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e.attributes.x.value = format_percent(parseFloat(find_child(e.parentNode, "rect[x]").attributes.x.value) + (100 * 3 / frames.attributes.width.value));
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}
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}
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if (e.attributes.width != undefined) {
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orig_save(e, "width");
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e.attributes.width.value = format_percent(parseFloat(e.attributes.width.value) * ratio);
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}
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}
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if (e.childNodes == undefined) return;
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for(var i = 0, c = e.childNodes; i < c.length; i++) {
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zoom_child(c[i], x, ratio);
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}
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}
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function zoom_parent(e) {
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if (e.attributes) {
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if (e.attributes.x != undefined) {
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orig_save(e, "x");
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e.attributes.x.value = "0.0%";
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}
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if (e.attributes.width != undefined) {
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orig_save(e, "width");
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e.attributes.width.value = "100.0%";
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}
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}
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if (e.childNodes == undefined) return;
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for(var i = 0, c = e.childNodes; i < c.length; i++) {
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zoom_parent(c[i]);
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}
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}
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function zoom(node) {
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var attr = find_child(node, "rect").attributes;
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var width = parseFloat(attr.width.value);
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var xmin = parseFloat(attr.x.value);
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var xmax = xmin + width;
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var ymin = parseFloat(attr.y.value);
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var ratio = 100 / width;
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// XXX: Workaround for JavaScript float issues (fix me)
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var fudge = 0.001;
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unzoombtn.classList.remove("hide");
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var el = frames.children;
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for (var i = 0; i < el.length; i++) {
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var e = el[i];
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var a = find_child(e, "rect").attributes;
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var ex = parseFloat(a.x.value);
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var ew = parseFloat(a.width.value);
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// Is it an ancestor
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if (!inverted) {
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var upstack = parseFloat(a.y.value) > ymin;
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} else {
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var upstack = parseFloat(a.y.value) < ymin;
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}
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if (upstack) {
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// Direct ancestor
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if (ex <= xmin && (ex+ew+fudge) >= xmax) {
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e.classList.add("parent");
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zoom_parent(e);
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update_text(e);
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}
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// not in current path
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else
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e.classList.add("hide");
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}
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// Children maybe
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else {
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// no common path
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if (ex < xmin || ex + fudge >= xmax) {
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e.classList.add("hide");
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}
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else {
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zoom_child(e, xmin, ratio);
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update_text(e);
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}
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}
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}
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}
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function unzoom() {
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unzoombtn.classList.add("hide");
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var el = frames.children;
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for(var i = 0; i < el.length; i++) {
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el[i].classList.remove("parent");
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el[i].classList.remove("hide");
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zoom_reset(el[i]);
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update_text(el[i]);
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}
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}
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// search
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function reset_search() {
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var el = document.querySelectorAll("#frames rect");
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for (var i = 0; i < el.length; i++) {
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orig_load(el[i], "fill")
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}
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var params = get_params();
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delete params.s;
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history.replaceState(null, null, parse_params(params));
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}
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function search_prompt() {
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if (!searching) {
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var term = prompt("Enter a search term (regexp " +
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"allowed, eg: ^ext4_)", "");
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if (term != null) {
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search(term)
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}
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} else {
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reset_search();
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searching = 0;
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searchbtn.classList.remove("show");
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searchbtn.firstChild.nodeValue = "Search"
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matchedtxt.classList.add("hide");
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matchedtxt.firstChild.nodeValue = ""
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}
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}
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function search(term) {
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var re = new RegExp(term);
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var el = frames.children;
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var matches = new Object();
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var maxwidth = 0;
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for (var i = 0; i < el.length; i++) {
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var e = el[i];
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var func = g_to_func(e);
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var rect = find_child(e, "rect");
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if (func == null || rect == null)
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continue;
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// Save max width. Only works as we have a root frame
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var w = parseFloat(rect.attributes.width.value);
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if (w > maxwidth)
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maxwidth = w;
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if (func.match(re)) {
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// highlight
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var x = parseFloat(rect.attributes.x.value);
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orig_save(rect, "fill");
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rect.attributes.fill.value = searchcolor;
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// remember matches
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if (matches[x] == undefined) {
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matches[x] = w;
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} else {
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if (w > matches[x]) {
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// overwrite with parent
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matches[x] = w;
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}
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}
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searching = 1;
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}
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}
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if (!searching)
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return;
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var params = get_params();
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params.s = term;
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history.replaceState(null, null, parse_params(params));
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searchbtn.classList.add("show");
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searchbtn.firstChild.nodeValue = "Reset Search";
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// calculate percent matched, excluding vertical overlap
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var count = 0;
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var lastx = -1;
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var lastw = 0;
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var keys = Array();
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for (k in matches) {
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if (matches.hasOwnProperty(k))
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keys.push(k);
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}
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// sort the matched frames by their x location
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// ascending, then width descending
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keys.sort(function(a, b){
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return a - b;
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});
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// Step through frames saving only the biggest bottom-up frames
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// thanks to the sort order. This relies on the tree property
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// where children are always smaller than their parents.
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var fudge = 0.0001; // JavaScript floating point
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for (var k in keys) {
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var x = parseFloat(keys[k]);
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var w = matches[keys[k]];
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if (x >= lastx + lastw - fudge) {
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count += w;
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lastx = x;
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lastw = w;
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}
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}
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// display matched percent
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matchedtxt.classList.remove("hide");
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var pct = 100 * count / maxwidth;
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if (pct != 100) pct = pct.toFixed(1);
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matchedtxt.firstChild.nodeValue = "Matched: " + pct + "%";
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}
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function format_percent(n) {
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return n.toFixed(4) + "%";
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}
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