-<?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="118" onload="init(evt)" viewBox="0 0 1200 118" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:fg="http://github.com/jonhoo/inferno"><!--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">

-text { font-family:monospace; font-size:12px }

-#title { text-anchor:middle; font-size:17px; }

-#matched { text-anchor:end; }

-#search { text-anchor:end; opacity:0.1; cursor:pointer; }

-#search:hover, #search.show { opacity:1; }

-#subtitle { text-anchor:middle; font-color:rgb(160,160,160); }

-#unzoom { cursor:pointer; }

-#frames > *:hover { stroke:black; stroke-width:0.5; cursor:pointer; }

-.hide { display:none; }

-.parent { opacity:0.5; }

-</style><script type="text/ecmascript"><![CDATA[

- var nametype = 'Function:';

- var fontsize = 12;

- var fontwidth = 0.59;

- var xpad = 10;

- var inverted = false;

- var searchcolor = 'rgb(230,0,230)';

- var fluiddrawing = true;

- var truncate_text_right = false;

- ]]><![CDATA["use strict";

-var details, searchbtn, unzoombtn, matchedtxt, svg, searching, frames, known_font_width;

-function init(evt) {

- details = document.getElementById("details").firstChild;

- searchbtn = document.getElementById("search");

- unzoombtn = document.getElementById("unzoom");

- matchedtxt = document.getElementById("matched");

- svg = document.getElementsByTagName("svg")[0];

- frames = document.getElementById("frames");

- known_font_width = get_monospace_width(frames);

- total_samples = parseInt(frames.attributes.total_samples.value);

- searching = 0;

-

- // Use GET parameters to restore a flamegraph's state.

- var restore_state = function() {

- var params = get_params();

- if (params.x && params.y)

- zoom(find_group(document.querySelector('[*|x="' + params.x + '"][y="' + params.y + '"]')));

- if (params.s)

- search(params.s);

- };

-

- if (fluiddrawing) {

- // Make width dynamic so the SVG fits its parent's width.

- svg.removeAttribute("width");

- // Edge requires us to have a viewBox that gets updated with size changes.

- var isEdge = /Edge\/\d./i.test(navigator.userAgent);

- if (!isEdge) {

- svg.removeAttribute("viewBox");

- }

- var update_for_width_change = function() {

- if (isEdge) {

- svg.attributes.viewBox.value = "0 0 " + svg.width.baseVal.value + " " + svg.height.baseVal.value;

- }

-

- // Keep consistent padding on left and right of frames container.

- frames.attributes.width.value = svg.width.baseVal.value - xpad * 2;

-

- // Text truncation needs to be adjusted for the current width.

- update_text_for_elements(frames.children);

-

- // Keep search elements at a fixed distance from right edge.

- var svgWidth = svg.width.baseVal.value;

- searchbtn.attributes.x.value = svgWidth - xpad;

- matchedtxt.attributes.x.value = svgWidth - xpad;

- };

- window.addEventListener('resize', function() {

- update_for_width_change();

- });

- // This needs to be done asynchronously for Safari to work.

- setTimeout(function() {

- unzoom();

- update_for_width_change();

- restore_state();

- }, 0);

- } else {

- restore_state();

- }

-}

-// event listeners

-window.addEventListener("click", function(e) {

- var target = find_group(e.target);

- if (target) {

- if (target.nodeName == "a") {

- if (e.ctrlKey === false) return;

- e.preventDefault();

- }

- if (target.classList.contains("parent")) unzoom();

- zoom(target);

-

- // set parameters for zoom state

- var el = target.querySelector("rect");

- if (el && el.attributes && el.attributes.y && el.attributes["fg:x"]) {

- var params = get_params()

- params.x = el.attributes["fg:x"].value;

- params.y = el.attributes.y.value;

- history.replaceState(null, null, parse_params(params));

- }

- }

- else if (e.target.id == "unzoom") {

- unzoom();

-

- // remove zoom state

- var params = get_params();

- if (params.x) delete params.x;

- if (params.y) delete params.y;

- history.replaceState(null, null, parse_params(params));

- }

- else if (e.target.id == "search") search_prompt();

-}, false)

-// mouse-over for info

-// show

-window.addEventListener("mouseover", function(e) {

- var target = find_group(e.target);

- if (target) details.nodeValue = nametype + " " + g_to_text(target);

-}, false)

-// clear

-window.addEventListener("mouseout", function(e) {

- var target = find_group(e.target);

- if (target) details.nodeValue = ' ';

-}, false)

-// ctrl-F for search

-window.addEventListener("keydown",function (e) {

- if (e.keyCode === 114 || (e.ctrlKey && e.keyCode === 70)) {

- e.preventDefault();

- search_prompt();

- }

-}, false)

-// functions

-function get_params() {

- var params = {};

- var paramsarr = window.location.search.substr(1).split('&');

- for (var i = 0; i < paramsarr.length; ++i) {

- var tmp = paramsarr[i].split("=");

- if (!tmp[0] || !tmp[1]) continue;

- params[tmp[0]] = decodeURIComponent(tmp[1]);

- }

- return params;

-}

-function parse_params(params) {

- var uri = "?";

- for (var key in params) {

- uri += key + '=' + encodeURIComponent(params[key]) + '&';

- }

- if (uri.slice(-1) == "&")

- uri = uri.substring(0, uri.length - 1);

- if (uri == '?')

- uri = window.location.href.split('?')[0];

- return uri;

-}

-function find_child(node, selector) {

- var children = node.querySelectorAll(selector);

- if (children.length) return children[0];

- return;

-}

-function find_group(node) {

- var parent = node.parentElement;

- if (!parent) return;

- if (parent.id == "frames") return node;

- return find_group(parent);

-}

-function orig_save(e, attr, val) {

- if (e.attributes["fg:orig_" + attr] != undefined) return;

- if (e.attributes[attr] == undefined) return;

- if (val == undefined) val = e.attributes[attr].value;

- e.setAttribute("fg:orig_" + attr, val);

-}

-function orig_load(e, attr) {

- if (e.attributes["fg:orig_"+attr] == undefined) return;

- e.attributes[attr].value = e.attributes["fg:orig_" + attr].value;

- e.removeAttribute("fg:orig_" + attr);

-}

-function g_to_text(e) {

- var text = find_child(e, "title").firstChild.nodeValue;

- return (text)

-}

-function g_to_func(e) {

- var func = g_to_text(e);

- // if there's any manipulation we want to do to the function

- // name before it's searched, do it here before returning.

- return (func);

-}

-function get_monospace_width(frames) {

- // Given the id="frames" element, return the width of text characters if

- // this is a monospace font, otherwise return 0.

- text = find_child(frames.children[0], "text");

- originalContent = text.textContent;

- text.textContent = "!";

- bangWidth = text.getComputedTextLength();

- text.textContent = "W";

- wWidth = text.getComputedTextLength();

- text.textContent = originalContent;

- if (bangWidth === wWidth) {

- return bangWidth;

- } else {

- return 0;

- }

-}

-function update_text_for_elements(elements) {

- // In order to render quickly in the browser, you want to do one pass of

- // reading attributes, and one pass of mutating attributes. See

- // https://web.dev/avoid-large-complex-layouts-and-layout-thrashing/ for details.

-

- // Fall back to inefficient calculation, if we're variable-width font.

- // TODO This should be optimized somehow too.

- if (known_font_width === 0) {

- for (var i = 0; i < elements.length; i++) {

- update_text(elements[i]);

- }

- return;

- }

-

- var textElemNewAttributes = [];

- for (var i = 0; i < elements.length; i++) {

- var e = elements[i];

- var r = find_child(e, "rect");

- var t = find_child(e, "text");

- var w = parseFloat(r.attributes.width.value) * frames.attributes.width.value / 100 - 3;

- var txt = find_child(e, "title").textContent.replace(/\([^(]*\)$/,"");

- var newX = format_percent((parseFloat(r.attributes.x.value) + (100 * 3 / frames.attributes.width.value)));

-

- // Smaller than this size won't fit anything

- if (w < 2 * known_font_width) {

- textElemNewAttributes.push([newX, ""]);

- continue;

- }

-

- // Fit in full text width

- if (txt.length * known_font_width < w) {

- textElemNewAttributes.push([newX, txt]);

- continue;

- }

-

- var substringLength = Math.floor(w / known_font_width) - 2;

- if (truncate_text_right) {

- // Truncate the right side of the text.

- textElemNewAttributes.push([newX, txt.substring(0, substringLength) + ".."]);

- continue;

- } else {

- // Truncate the left side of the text.

- textElemNewAttributes.push([newX, ".." + txt.substring(txt.length - substringLength, txt.length)]);

- continue;

- }

- }

-

- console.assert(textElemNewAttributes.length === elements.length, "Resize failed, please file a bug at https://github.com/jonhoo/inferno/");

-

- // Now that we know new textContent, set it all in one go so we don't refresh a bazillion times.

- for (var i = 0; i < elements.length; i++) {

- var e = elements[i];

- var values = textElemNewAttributes[i];

- var t = find_child(e, "text");

- t.attributes.x.value = values[0];

- t.textContent = values[1];

- }

-}

-

-function update_text(e) {

- var r = find_child(e, "rect");

- var t = find_child(e, "text");

- var w = parseFloat(r.attributes.width.value) * frames.attributes.width.value / 100 - 3;

- var txt = find_child(e, "title").textContent.replace(/\([^(]*\)$/,"");

- t.attributes.x.value = format_percent((parseFloat(r.attributes.x.value) + (100 * 3 / frames.attributes.width.value)));

-

- // Smaller than this size won't fit anything

- if (w < 2 * fontsize * fontwidth) {

- t.textContent = "";

- return;

- }

- t.textContent = txt;

- // Fit in full text width

- if (t.getComputedTextLength() < w)

- return;

- if (truncate_text_right) {

- // Truncate the right side of the text.

- for (var x = txt.length - 2; x > 0; x--) {

- if (t.getSubStringLength(0, x + 2) <= w) {

- t.textContent = txt.substring(0, x) + "..";

- return;

- }

- }

- } else {

- // Truncate the left side of the text.

- for (var x = 2; x < txt.length; x++) {

- if (t.getSubStringLength(x - 2, txt.length) <= w) {

- t.textContent = ".." + txt.substring(x, txt.length);

- return;

- }

- }

- }

- t.textContent = "";

-}

-// zoom

-function zoom_reset(e) {

- if (e.tagName == "rect") {

- e.attributes.x.value = format_percent(100 * parseInt(e.attributes["fg:x"].value) / total_samples);

- e.attributes.width.value = format_percent(100 * parseInt(e.attributes["fg:w"].value) / total_samples);

- }

- if (e.childNodes == undefined) return;

- for(var i = 0, c = e.childNodes; i < c.length; i++) {

- zoom_reset(c[i]);

- }

-}

-function zoom_child(e, x, zoomed_width_samples) {

- if (e.tagName == "text") {

- var parent_x = parseFloat(find_child(e.parentNode, "rect[x]").attributes.x.value);

- e.attributes.x.value = format_percent(parent_x + (100 * 3 / frames.attributes.width.value));

- } else if (e.tagName == "rect") {

- e.attributes.x.value = format_percent(100 * (parseInt(e.attributes["fg:x"].value) - x) / zoomed_width_samples);

- e.attributes.width.value = format_percent(100 * parseInt(e.attributes["fg:w"].value) / zoomed_width_samples);

- }

- if (e.childNodes == undefined) return;

- for(var i = 0, c = e.childNodes; i < c.length; i++) {

- zoom_child(c[i], x, zoomed_width_samples);

- }

-}

-function zoom_parent(e) {

- if (e.attributes) {

- if (e.attributes.x != undefined) {

- e.attributes.x.value = "0.0%";

- }

- if (e.attributes.width != undefined) {

- e.attributes.width.value = "100.0%";

- }

- }

- if (e.childNodes == undefined) return;

- for(var i = 0, c = e.childNodes; i < c.length; i++) {

- zoom_parent(c[i]);

- }

-}

-function zoom(node) {

- var attr = find_child(node, "rect").attributes;

- var width = parseInt(attr["fg:w"].value);

- var xmin = parseInt(attr["fg:x"].value);

- var xmax = xmin + width;

- var ymin = parseFloat(attr.y.value);

- unzoombtn.classList.remove("hide");

- var el = frames.children;

- var to_update_text = [];

- for (var i = 0; i < el.length; i++) {

- var e = el[i];

- var a = find_child(e, "rect").attributes;

- var ex = parseInt(a["fg:x"].value);

- var ew = parseInt(a["fg:w"].value);

- // Is it an ancestor

- if (!inverted) {

- var upstack = parseFloat(a.y.value) > ymin;

- } else {

- var upstack = parseFloat(a.y.value) < ymin;

- }

- if (upstack) {

- // Direct ancestor

- if (ex <= xmin && (ex+ew) >= xmax) {

- e.classList.add("parent");

- zoom_parent(e);

- to_update_text.push(e);

- }

- // not in current path

- else

- e.classList.add("hide");

- }

- // Children maybe

- else {

- // no common path

- if (ex < xmin || ex >= xmax) {

- e.classList.add("hide");

- }

- else {

- zoom_child(e, xmin, width);

- to_update_text.push(e);

- }

- }

- }

- update_text_for_elements(to_update_text);

-}

-function unzoom() {

- unzoombtn.classList.add("hide");

- var el = frames.children;

- for(var i = 0; i < el.length; i++) {

- el[i].classList.remove("parent");

- el[i].classList.remove("hide");

- zoom_reset(el[i]);

- }

- update_text_for_elements(el);

-}

-// search

-function reset_search() {

- var el = document.querySelectorAll("#frames rect");

- for (var i = 0; i < el.length; i++) {

- orig_load(el[i], "fill")

- }

- var params = get_params();

- delete params.s;

- history.replaceState(null, null, parse_params(params));

-}

-function search_prompt() {

- if (!searching) {

- var term = prompt("Enter a search term (regexp " +

- "allowed, eg: ^ext4_)", "");

- if (term != null) {

- search(term)

- }

- } else {

- reset_search();

- searching = 0;

- searchbtn.classList.remove("show");

- searchbtn.firstChild.nodeValue = "Search"

- matchedtxt.classList.add("hide");

- matchedtxt.firstChild.nodeValue = ""

- }

-}

-function search(term) {

- var re = new RegExp(term);

- var el = frames.children;

- var matches = new Object();

- var maxwidth = 0;

- for (var i = 0; i < el.length; i++) {

- var e = el[i];

- // Skip over frames which are either not visible, or below the zoomed-to frame

- if (e.classList.contains("hide") || e.classList.contains("parent")) {

- continue;

- }

- var func = g_to_func(e);

- var rect = find_child(e, "rect");

- if (func == null || rect == null)

- continue;

- // Save max width. Only works as we have a root frame

- var w = parseInt(rect.attributes["fg:w"].value);

- if (w > maxwidth)

- maxwidth = w;

- if (func.match(re)) {

- // highlight

- var x = parseInt(rect.attributes["fg:x"].value);

- orig_save(rect, "fill");

- rect.attributes.fill.value = searchcolor;

- // remember matches

- if (matches[x] == undefined) {

- matches[x] = w;

- } else {

- if (w > matches[x]) {

- // overwrite with parent

- matches[x] = w;

- }

- }

- searching = 1;

- }

- }

- if (!searching)

- return;

- var params = get_params();

- params.s = term;

- history.replaceState(null, null, parse_params(params));

-

- searchbtn.classList.add("show");

- searchbtn.firstChild.nodeValue = "Reset Search";

- // calculate percent matched, excluding vertical overlap

- var count = 0;

- var lastx = -1;

- var lastw = 0;

- var keys = Array();

- for (k in matches) {

- if (matches.hasOwnProperty(k))

- keys.push(k);

- }

- // sort the matched frames by their x location

- // ascending, then width descending

- keys.sort(function(a, b){

- return a - b;

- });

- // Step through frames saving only the biggest bottom-up frames

- // thanks to the sort order. This relies on the tree property

- // where children are always smaller than their parents.

- for (var k in keys) {

- var x = parseInt(keys[k]);

- var w = matches[keys[k]];

- if (x >= lastx + lastw) {

- count += w;

- lastx = x;

- lastw = w;

- }

- }

- // display matched percent

- matchedtxt.classList.remove("hide");

- var pct = 100 * count / maxwidth;

- if (pct != 100) pct = pct.toFixed(1);

- matchedtxt.firstChild.nodeValue = "Matched: " + pct + "%";

-}

-function format_percent(n) {

- return n.toFixed(4) + "%";

-}

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