<!DOCTYPE html>
<html lang='en'>
<head>
<meta charset='utf-8'>
<style>
body {margin: 0; padding: 10px; background-color: #ffffff}
h1 {margin: 5px 0 0 0; font-size: 18px; font-weight: normal; text-align: center}
header {margin: -24px 0 5px 0; line-height: 24px}
button {font: 12px sans-serif; cursor: pointer}
p {margin: 5px 0 5px 0}
a {color: #0366d6}
#hl {position: absolute; display: none; overflow: hidden; white-space: nowrap; pointer-events: none; background-color: #ffffe0; outline: 1px solid #ffc000; height: 15px}
#hl span {padding: 0 3px 0 3px}
#status {overflow: hidden; white-space: nowrap}
#match {overflow: hidden; white-space: nowrap; display: none; float: right; text-align: right}
#reset {cursor: pointer}
#canvas {width: 100%; height: 400px}
</style>
</head>
<body style='font: 12px Verdana, sans-serif'>
<h1>Allocation profile</h1>
<header style='text-align: left'><button id='reverse' title='Reverse'>🔻</button> <button id='search' title='Search'>🔍</button></header>
<header style='text-align: right'>Produced by <a href='https://github.com/jvm-profiling-tools/async-profiler'>async-profiler</a></header>
<canvas id='canvas'></canvas>
<div id='hl'><span></span></div>
<p id='match'>Matched: <span id='matchval'></span> <span id='reset' title='Clear'>❌</span></p>
<p id='status'> </p>
<script>
// Copyright 2020 Andrei Pangin
// Licensed under the Apache License, Version 2.0.
'use strict';
var root, rootLevel, px, pattern;
var reverse = false;
const levels = Array(25);
for (let h = 0; h < levels.length; h++) {
levels[h] = [];
}
const canvas = document.getElementById('canvas');
const c = canvas.getContext('2d');
const hl = document.getElementById('hl');
const status = document.getElementById('status');
const canvasWidth = canvas.offsetWidth;
const canvasHeight = canvas.offsetHeight;
canvas.style.width = canvasWidth + 'px';
canvas.width = canvasWidth * (devicePixelRatio || 1);
canvas.height = canvasHeight * (devicePixelRatio || 1);
if (devicePixelRatio) c.scale(devicePixelRatio, devicePixelRatio);
c.font = document.body.style.font;
const palette = [
[0xb2e1b2, 20, 20, 20],
[0x50e150, 30, 30, 30],
[0x50cccc, 30, 30, 30],
[0xe15a5a, 30, 40, 40],
[0xc8c83c, 30, 30, 10],
[0xe17d00, 30, 30, 0],
[0xcce880, 20, 20, 20],
];
function getColor(p) {
const v = Math.random();
return '#' + (p[0] + ((p[1] * v) << 16 | (p[2] * v) << 8 | (p[3] * v))).toString(16);
}
function f(level, left, width, type, title, inln, c1, int) {
levels[level].push({left: left, width: width, color: getColor(palette[type]), title: title,
details: (int ? ', int=' + int : '') + (c1 ? ', c1=' + c1 : '') + (inln ? ', inln=' + inln : '')
});
}
function samples(n) {
return n === 1 ? '1 sample' : n.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ',') + ' samples';
}
function pct(a, b) {
return a >= b ? '100' : (100 * a / b).toFixed(2);
}
function findFrame(frames, x) {
let left = 0;
let right = frames.length - 1;
while (left <= right) {
const mid = (left + right) >>> 1;
const f = frames[mid];
if (f.left > x) {
right = mid - 1;
} else if (f.left + f.width <= x) {
left = mid + 1;
} else {
return f;
}
}
if (frames[left] && (frames[left].left - x) * px < 0.5) return frames[left];
if (frames[right] && (x - (frames[right].left + frames[right].width)) * px < 0.5) return frames[right];
return null;
}
function search(r) {
if (r === true && (r = prompt('Enter regexp to search:', '')) === null) {
return;
}
pattern = r ? RegExp(r) : undefined;
const matched = render(root, rootLevel);
document.getElementById('matchval').textContent = pct(matched, root.width) + '%';
document.getElementById('match').style.display = r ? 'inherit' : 'none';
}
function render(newRoot, newLevel) {
if (root) {
c.fillStyle = '#ffffff';
c.fillRect(0, 0, canvasWidth, canvasHeight);
}
root = newRoot || levels[0][0];
rootLevel = newLevel || 0;
px = canvasWidth / root.width;
const x0 = root.left;
const x1 = x0 + root.width;
const marked = [];
function mark(f) {
return marked[f.left] >= f.width || (marked[f.left] = f.width);
}
function totalMarked() {
let total = 0;
let left = 0;
Object.keys(marked).sort(function(a, b) { return a - b; }).forEach(function(x) {
if (+x >= left) {
total += marked[x];
left = +x + marked[x];
}
});
return total;
}
function drawFrame(f, y, alpha) {
if (f.left < x1 && f.left + f.width > x0) {
c.fillStyle = pattern && f.title.match(pattern) && mark(f) ? '#ee00ee' : f.color;
c.fillRect((f.left - x0) * px, y, f.width * px, 15);
if (f.width * px >= 21) {
const chars = Math.floor(f.width * px / 7);
const title = f.title.length <= chars ? f.title : f.title.substring(0, chars - 2) + '..';
c.fillStyle = '#000000';
c.fillText(title, Math.max(f.left - x0, 0) * px + 3, y + 12, f.width * px - 6);
}
if (alpha) {
c.fillStyle = 'rgba(255, 255, 255, 0.5)';
c.fillRect((f.left - x0) * px, y, f.width * px, 15);
}
}
}
for (let h = 0; h < levels.length; h++) {
const y = reverse ? h * 16 : canvasHeight - (h + 1) * 16;
const frames = levels[h];
for (let i = 0; i < frames.length; i++) {
drawFrame(frames[i], y, h < rootLevel);
}
}
return totalMarked();
}
canvas.onmousemove = function() {
const h = Math.floor((reverse ? event.offsetY : (canvasHeight - event.offsetY)) / 16);
if (h >= 0 && h < levels.length) {
const f = findFrame(levels[h], event.offsetX / px + root.left);
if (f) {
if (f != root) getSelection().removeAllRanges();
hl.style.left = (Math.max(f.left - root.left, 0) * px + canvas.offsetLeft) + 'px';
hl.style.width = (Math.min(f.width, root.width) * px) + 'px';
hl.style.top = ((reverse ? h * 16 : canvasHeight - (h + 1) * 16) + canvas.offsetTop) + 'px';
hl.firstChild.textContent = f.title;
hl.style.display = 'block';
canvas.title = f.title + '\n(' + samples(f.width) + f.details + ', ' + pct(f.width, levels[0][0].width) + '%)';
canvas.style.cursor = 'pointer';
canvas.onclick = function() {
if (f != root) {
render(f, h);
canvas.onmousemove();
}
};
status.textContent = 'Function: ' + canvas.title;
return;
}
}
canvas.onmouseout();
}
canvas.onmouseout = function() {
hl.style.display = 'none';
status.textContent = '\xa0';
canvas.title = '';
canvas.style.cursor = '';
canvas.onclick = '';
}
canvas.ondblclick = function() {
getSelection().selectAllChildren(hl);
}
document.getElementById('reverse').onclick = function() {
reverse = !reverse;
render();
}
document.getElementById('search').onclick = function() {
search(true);
}
document.getElementById('reset').onclick = function() {
search(false);
}
window.onkeydown = function() {
if (event.ctrlKey && event.keyCode === 70) {
event.preventDefault();
search(true);
} else if (event.keyCode === 27) {
search(false);
}
}
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