mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-07-04 19:29:55 +00:00
2050 lines
66 KiB
JavaScript
2050 lines
66 KiB
JavaScript
/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*-*/
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// You can direct about:memory to immediately load memory reports from a file
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// by providing a file= query string. For example,
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//
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// about:memory?file=/home/username/reports.json.gz
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//
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// "file=" is not case-sensitive. We'll URI-unescape the contents of the
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// "file=" argument, and obviously the filename is case-sensitive iff you're on
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// a case-sensitive filesystem. If you specify more than one "file=" argument,
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// only the first one is used.
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"use strict";
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//---------------------------------------------------------------------------
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var Cc = Components.classes;
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var Ci = Components.interfaces;
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var Cu = Components.utils;
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var CC = Components.Constructor;
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const KIND_NONHEAP = Ci.nsIMemoryReporter.KIND_NONHEAP;
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const KIND_HEAP = Ci.nsIMemoryReporter.KIND_HEAP;
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const KIND_OTHER = Ci.nsIMemoryReporter.KIND_OTHER;
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const UNITS_BYTES = Ci.nsIMemoryReporter.UNITS_BYTES;
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const UNITS_COUNT = Ci.nsIMemoryReporter.UNITS_COUNT;
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const UNITS_COUNT_CUMULATIVE = Ci.nsIMemoryReporter.UNITS_COUNT_CUMULATIVE;
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const UNITS_PERCENTAGE = Ci.nsIMemoryReporter.UNITS_PERCENTAGE;
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Cu.import("resource://gre/modules/Services.jsm");
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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Cu.import("resource://gre/modules/NetUtil.jsm");
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XPCOMUtils.defineLazyGetter(this, "nsBinaryStream",
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() => CC("@mozilla.org/binaryinputstream;1",
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"nsIBinaryInputStream",
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"setInputStream"));
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XPCOMUtils.defineLazyGetter(this, "nsFile",
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() => CC("@mozilla.org/file/local;1",
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"nsIFile", "initWithPath"));
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XPCOMUtils.defineLazyGetter(this, "nsGzipConverter",
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() => CC("@mozilla.org/streamconv;1?from=gzip&to=uncompressed",
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"nsIStreamConverter"));
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var gMgr = Cc["@mozilla.org/memory-reporter-manager;1"]
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.getService(Ci.nsIMemoryReporterManager);
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const gPageName = 'about:memory';
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document.title = gPageName;
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const gUnnamedProcessStr = "Main Process";
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var gIsDiff = false;
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//---------------------------------------------------------------------------
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// Forward slashes in URLs in paths are represented with backslashes to avoid
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// being mistaken for path separators. Paths/names where this hasn't been
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// undone are prefixed with "unsafe"; the rest are prefixed with "safe".
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function flipBackslashes(aUnsafeStr)
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{
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// Save memory by only doing the replacement if it's necessary.
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return (aUnsafeStr.indexOf('\\') === -1)
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? aUnsafeStr
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: aUnsafeStr.replace(/\\/g, '/');
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}
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const gAssertionFailureMsgPrefix = "aboutMemory.js assertion failed: ";
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// This is used for things that should never fail, and indicate a defect in
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// this file if they do.
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function assert(aCond, aMsg)
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{
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if (!aCond) {
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reportAssertionFailure(aMsg)
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throw(gAssertionFailureMsgPrefix + aMsg);
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}
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}
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// This is used for malformed input from memory reporters.
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function assertInput(aCond, aMsg)
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{
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if (!aCond) {
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throw "Invalid memory report(s): " + aMsg;
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}
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}
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function handleException(ex)
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{
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let str = ex.toString();
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if (str.startsWith(gAssertionFailureMsgPrefix)) {
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// Argh, assertion failure within this file! Give up.
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throw ex;
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} else {
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// File or memory reporter problem. Print a message.
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updateMainAndFooter(ex.toString(), HIDE_FOOTER, "badInputWarning");
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}
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}
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function reportAssertionFailure(aMsg)
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{
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let debug = Cc["@mozilla.org/xpcom/debug;1"].getService(Ci.nsIDebug2);
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if (debug.isDebugBuild) {
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debug.assertion(aMsg, "false", "aboutMemory.js", 0);
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}
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}
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function debug(x)
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{
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let section = appendElement(document.body, 'div', 'section');
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appendElementWithText(section, "div", "debug", JSON.stringify(x));
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}
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//---------------------------------------------------------------------------
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function onUnload()
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{
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}
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//---------------------------------------------------------------------------
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// The <div> holding everything but the header and footer (if they're present).
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// It's what is updated each time the page changes.
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var gMain;
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// The <div> holding the footer.
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var gFooter;
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// The "verbose" checkbox.
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var gVerbose;
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// The "anonymize" checkbox.
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var gAnonymize;
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// Values for the |aFooterAction| argument to updateTitleMainAndFooter.
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var HIDE_FOOTER = 0;
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var SHOW_FOOTER = 1;
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function updateTitleMainAndFooter(aTitleNote, aMsg, aFooterAction, aClassName)
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{
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document.title = gPageName;
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if (aTitleNote) {
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document.title += " (" + aTitleNote + ")";
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}
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// Clear gMain by replacing it with an empty node.
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let tmp = gMain.cloneNode(false);
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gMain.parentNode.replaceChild(tmp, gMain);
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gMain = tmp;
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gMain.classList.remove('hidden');
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gMain.classList.remove('verbose');
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gMain.classList.remove('non-verbose');
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if (gVerbose) {
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gMain.classList.add(gVerbose.checked ? 'verbose' : 'non-verbose');
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}
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let msgElement;
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if (aMsg) {
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let className = "section"
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if (aClassName) {
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className = className + " " + aClassName;
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}
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msgElement = appendElementWithText(gMain, 'div', className, aMsg);
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}
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switch (aFooterAction) {
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case HIDE_FOOTER: gFooter.classList.add('hidden'); break;
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case SHOW_FOOTER: gFooter.classList.remove('hidden'); break;
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default: assertInput(false, "bad footer action in updateTitleMainAndFooter");
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}
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return msgElement;
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}
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function updateMainAndFooter(aMsg, aFooterAction, aClassName)
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{
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return updateTitleMainAndFooter("", aMsg, aFooterAction, aClassName);
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}
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function appendTextNode(aP, aText)
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{
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let e = document.createTextNode(aText);
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aP.appendChild(e);
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return e;
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}
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function appendElement(aP, aTagName, aClassName)
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{
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let e = document.createElement(aTagName);
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if (aClassName) {
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e.className = aClassName;
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}
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aP.appendChild(e);
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return e;
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}
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function appendElementWithText(aP, aTagName, aClassName, aText)
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{
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let e = appendElement(aP, aTagName, aClassName);
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// Setting textContent clobbers existing children, but there are none. More
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// importantly, it avoids creating a JS-land object for the node, saving
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// memory.
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e.textContent = aText;
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return e;
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}
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//---------------------------------------------------------------------------
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const explicitTreeDescription =
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"This tree covers explicit memory allocations by the application. It includes \
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\n\n\
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* allocations made at the operating system level (via calls to functions such as \
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VirtualAlloc, vm_allocate, and mmap), \
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\n\n\
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* allocations made at the heap allocation level (via functions such as malloc, \
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calloc, realloc, memalign, operator new, and operator new[]) that have not been \
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explicitly decommitted (i.e. evicted from memory and swap), and \
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\n\n\
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* where possible, the overhead of the heap allocator itself.\
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\n\n\
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It excludes memory that is mapped implicitly such as code and data segments, \
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and thread stacks. \
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\n\n\
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'explicit' is not guaranteed to cover every explicit allocation, but it does cover \
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most (including the entire heap), and therefore it is the single best number to \
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focus on when trying to reduce memory usage.";
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//---------------------------------------------------------------------------
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function appendButton(aP, aTitle, aOnClick, aText, aId)
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{
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let b = appendElementWithText(aP, "button", "", aText);
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b.title = aTitle;
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b.onclick = aOnClick;
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if (aId) {
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b.id = aId;
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}
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return b;
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}
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function appendHiddenFileInput(aP, aId, aChangeListener)
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{
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let input = appendElementWithText(aP, "input", "hidden", "");
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input.type = "file";
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input.id = aId; // used in testing
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input.addEventListener("change", aChangeListener);
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return input;
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}
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function onLoad()
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{
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// Generate the header.
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let header = appendElement(document.body, "div", "ancillary");
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// A hidden file input element that can be invoked when necessary.
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let fileInput1 = appendHiddenFileInput(header, "fileInput1", function() {
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let file = this.files[0];
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let filename = file.mozFullPath;
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updateAboutMemoryFromFile(filename);
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});
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// Ditto.
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let fileInput2 =
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appendHiddenFileInput(header, "fileInput2", function(e) {
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let file = this.files[0];
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// First time around, we stash a copy of the filename and reinvoke. Second
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// time around we do the diff and display.
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if (!this.filename1) {
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this.filename1 = file.mozFullPath;
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// e.skipClick is only true when testing -- it allows fileInput2's
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// onchange handler to be re-called without having to go via the file
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// picker.
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if (!e.skipClick) {
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this.click();
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}
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} else {
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let filename1 = this.filename1;
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delete this.filename1;
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updateAboutMemoryFromTwoFiles(filename1, file.mozFullPath);
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}
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});
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const CuDesc = "Measure current memory reports and show.";
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const LdDesc = "Load memory reports from file and show.";
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const DfDesc = "Load memory report data from two files and show the " +
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"difference.";
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const SvDesc = "Save memory reports to file.";
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const GCDesc = "Do a global garbage collection.";
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const CCDesc = "Do a cycle collection.";
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const MMDesc = "Send three \"heap-minimize\" notifications in a " +
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"row. Each notification triggers a global garbage " +
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"collection followed by a cycle collection, and causes the " +
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"process to reduce memory usage in other ways, e.g. by " +
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"flushing various caches.";
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const GCAndCCLogDesc = "Save garbage collection log and concise cycle " +
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"collection log.\n" +
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"WARNING: These logs may be large (>1GB).";
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const GCAndCCAllLogDesc = "Save garbage collection log and verbose cycle " +
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"collection log.\n" +
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"WARNING: These logs may be large (>1GB).";
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const DMDEnabledDesc = "Analyze memory reports coverage and save the " +
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"output to the temp directory.\n";
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const DMDDisabledDesc = "DMD is not running. Please re-start with $DMD and " +
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"the other relevant environment variables set " +
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"appropriately.";
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let ops = appendElement(header, "div", "");
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let row1 = appendElement(ops, "div", "opsRow");
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let labelDiv1 =
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appendElementWithText(row1, "div", "opsRowLabel", "Show memory reports");
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let label1 = appendElementWithText(labelDiv1, "label", "");
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gVerbose = appendElement(label1, "input", "");
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gVerbose.type = "checkbox";
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gVerbose.id = "verbose"; // used for testing
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appendTextNode(label1, "verbose");
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const kEllipsis = "\u2026";
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// The "measureButton" id is used for testing.
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appendButton(row1, CuDesc, doMeasure, "Measure", "measureButton");
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appendButton(row1, LdDesc, () => fileInput1.click(), "Load" + kEllipsis);
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appendButton(row1, DfDesc, () => fileInput2.click(),
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"Load and diff" + kEllipsis);
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let row2 = appendElement(ops, "div", "opsRow");
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let labelDiv2 =
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appendElementWithText(row2, "div", "opsRowLabel", "Save memory reports");
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appendButton(row2, SvDesc, saveReportsToFile, "Measure and save" + kEllipsis);
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// XXX: this isn't a great place for this checkbox, but I can't think of
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// anywhere better.
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let label2 = appendElementWithText(labelDiv2, "label", "");
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gAnonymize = appendElement(label2, "input", "");
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gAnonymize.type = "checkbox";
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appendTextNode(label2, "anonymize");
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let row3 = appendElement(ops, "div", "opsRow");
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appendElementWithText(row3, "div", "opsRowLabel", "Free memory");
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appendButton(row3, GCDesc, doGC, "GC");
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appendButton(row3, CCDesc, doCC, "CC");
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appendButton(row3, MMDesc, doMMU, "Minimize memory usage");
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let row4 = appendElement(ops, "div", "opsRow");
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appendElementWithText(row4, "div", "opsRowLabel", "Save GC & CC logs");
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appendButton(row4, GCAndCCLogDesc,
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saveGCLogAndConciseCCLog, "Save concise", 'saveLogsConcise');
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appendButton(row4, GCAndCCAllLogDesc,
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saveGCLogAndVerboseCCLog, "Save verbose", 'saveLogsVerbose');
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// Three cases here:
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// - DMD is disabled (i.e. not built): don't show the button.
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// - DMD is enabled but is not running: show the button, but disable it.
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// - DMD is enabled and is running: show the button and enable it.
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if (gMgr.isDMDEnabled) {
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let row5 = appendElement(ops, "div", "opsRow");
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appendElementWithText(row5, "div", "opsRowLabel", "Save DMD output");
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let enableButtons = gMgr.isDMDRunning;
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let dmdButton =
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appendButton(row5, enableButtons ? DMDEnabledDesc : DMDDisabledDesc,
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doDMD, "Save");
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dmdButton.disabled = !enableButtons;
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}
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// Generate the main div, where content ("section" divs) will go. It's
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// hidden at first.
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gMain = appendElement(document.body, 'div', '');
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gMain.id = 'mainDiv';
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// Generate the footer. It's hidden at first.
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gFooter = appendElement(document.body, 'div', 'ancillary hidden');
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let a = appendElementWithText(gFooter, "a", "option",
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"Troubleshooting information");
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a.href = "about:support";
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let legendText1 = "Click on a non-leaf node in a tree to expand ('++') " +
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"or collapse ('--') its children.";
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let legendText2 = "Hover the pointer over the name of a memory report " +
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"to see a description of what it measures.";
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appendElementWithText(gFooter, "div", "legend", legendText1);
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appendElementWithText(gFooter, "div", "legend hiddenOnMobile", legendText2);
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// See if we're loading from a file. (Because about:memory is a non-standard
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// URL, location.search is undefined, so we have to use location.href
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// instead.)
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let search = location.href.split('?')[1];
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if (search) {
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let searchSplit = search.split('&');
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for (let i = 0; i < searchSplit.length; i++) {
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if (searchSplit[i].toLowerCase().startsWith('file=')) {
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let filename = searchSplit[i].substring('file='.length);
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updateAboutMemoryFromFile(decodeURIComponent(filename));
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return;
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}
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}
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}
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}
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//---------------------------------------------------------------------------
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function doGC()
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{
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Services.obs.notifyObservers(null, "child-gc-request", null);
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Cu.forceGC();
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updateMainAndFooter("Garbage collection completed", HIDE_FOOTER);
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}
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function doCC()
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{
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Services.obs.notifyObservers(null, "child-cc-request", null);
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window.QueryInterface(Ci.nsIInterfaceRequestor)
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.getInterface(Ci.nsIDOMWindowUtils)
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.cycleCollect();
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updateMainAndFooter("Cycle collection completed", HIDE_FOOTER);
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}
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function doMMU()
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{
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Services.obs.notifyObservers(null, "child-mmu-request", null);
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gMgr.minimizeMemoryUsage(
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() => updateMainAndFooter("Memory minimization completed", HIDE_FOOTER));
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}
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function doMeasure()
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{
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updateAboutMemoryFromReporters();
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}
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function saveGCLogAndConciseCCLog()
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{
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dumpGCLogAndCCLog(false);
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}
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function saveGCLogAndVerboseCCLog()
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{
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dumpGCLogAndCCLog(true);
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}
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function doDMD()
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{
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updateMainAndFooter("Saving memory reports and DMD output...", HIDE_FOOTER);
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try {
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let dumper = Cc["@mozilla.org/memory-info-dumper;1"]
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.getService(Ci.nsIMemoryInfoDumper);
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dumper.dumpMemoryInfoToTempDir(/* identifier = */ "",
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gAnonymize.checked,
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/* minimize = */ false);
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updateMainAndFooter("Saved memory reports and DMD reports analysis " +
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"to the temp directory",
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HIDE_FOOTER);
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} catch (ex) {
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updateMainAndFooter(ex.toString(), HIDE_FOOTER);
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}
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}
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function dumpGCLogAndCCLog(aVerbose)
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{
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let dumper = Cc["@mozilla.org/memory-info-dumper;1"]
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.getService(Ci.nsIMemoryInfoDumper);
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let inProgress = updateMainAndFooter("Saving logs...", HIDE_FOOTER);
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let section = appendElement(gMain, 'div', "section");
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function displayInfo(gcLog, ccLog, isParent) {
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appendElementWithText(section, 'div', "",
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"Saved GC log to " + gcLog.path);
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let ccLogType = aVerbose ? "verbose" : "concise";
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appendElementWithText(section, 'div', "",
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"Saved " + ccLogType + " CC log to " + ccLog.path);
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}
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dumper.dumpGCAndCCLogsToFile("", aVerbose, /* dumpChildProcesses = */ true,
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{ onDump: displayInfo,
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onFinish: function() {
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inProgress.remove();
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Top-level function that does the work of generating the page from the memory
|
|
* reporters.
|
|
*/
|
|
function updateAboutMemoryFromReporters()
|
|
{
|
|
updateMainAndFooter("Measuring...", HIDE_FOOTER);
|
|
|
|
try {
|
|
let processLiveMemoryReports =
|
|
function(aHandleReport, aDisplayReports) {
|
|
let handleReport = function(aProcess, aUnsafePath, aKind, aUnits,
|
|
aAmount, aDescription) {
|
|
aHandleReport(aProcess, aUnsafePath, aKind, aUnits, aAmount,
|
|
aDescription, /* presence = */ undefined);
|
|
}
|
|
|
|
let displayReportsAndFooter = function() {
|
|
updateTitleMainAndFooter("live measurement", "", SHOW_FOOTER);
|
|
aDisplayReports();
|
|
}
|
|
|
|
gMgr.getReports(handleReport, null, displayReportsAndFooter, null,
|
|
gAnonymize.checked);
|
|
}
|
|
|
|
// Process the reports from the live memory reporters.
|
|
appendAboutMemoryMain(processLiveMemoryReports,
|
|
gMgr.hasMozMallocUsableSize);
|
|
|
|
} catch (ex) {
|
|
handleException(ex);
|
|
}
|
|
}
|
|
|
|
// Increment this if the JSON format changes.
|
|
//
|
|
var gCurrentFileFormatVersion = 1;
|
|
|
|
|
|
/**
|
|
* Parse a string as JSON and extract the |memory_report| property if it has
|
|
* one, which indicates the string is from a crash dump.
|
|
*
|
|
* @param aStr
|
|
* The string.
|
|
* @return The extracted object.
|
|
*/
|
|
function parseAndUnwrapIfCrashDump(aStr) {
|
|
let obj = JSON.parse(aStr);
|
|
if (obj.memory_report !== undefined) {
|
|
// It looks like a crash dump. The memory reports should be in the
|
|
// |memory_report| property.
|
|
obj = obj.memory_report;
|
|
}
|
|
return obj;
|
|
}
|
|
|
|
/**
|
|
* Populate about:memory using the data in the given JSON object.
|
|
*
|
|
* @param aObj
|
|
* An object that (hopefully!) conforms to the JSON schema used by
|
|
* nsIMemoryInfoDumper.
|
|
*/
|
|
function updateAboutMemoryFromJSONObject(aObj)
|
|
{
|
|
try {
|
|
assertInput(aObj.version === gCurrentFileFormatVersion,
|
|
"data version number missing or doesn't match");
|
|
assertInput(aObj.hasMozMallocUsableSize !== undefined,
|
|
"missing 'hasMozMallocUsableSize' property");
|
|
assertInput(aObj.reports && aObj.reports instanceof Array,
|
|
"missing or non-array 'reports' property");
|
|
|
|
let processMemoryReportsFromFile =
|
|
function(aHandleReport, aDisplayReports) {
|
|
for (let i = 0; i < aObj.reports.length; i++) {
|
|
let r = aObj.reports[i];
|
|
|
|
// A hack: for a brief time (late in the FF26 and early in the FF27
|
|
// cycle) we were dumping memory report files that contained reports
|
|
// whose path began with "redundant/". Such reports were ignored by
|
|
// about:memory. These reports are no longer produced, but some older
|
|
// builds are still floating around and producing files that contain
|
|
// them, so we need to still handle them (i.e. ignore them). This hack
|
|
// can be removed once FF26 and associated products (e.g. B2G 1.2) are
|
|
// no longer in common use.
|
|
if (!r.path.startsWith("redundant/")) {
|
|
aHandleReport(r.process, r.path, r.kind, r.units, r.amount,
|
|
r.description, r._presence);
|
|
}
|
|
}
|
|
aDisplayReports();
|
|
}
|
|
appendAboutMemoryMain(processMemoryReportsFromFile,
|
|
aObj.hasMozMallocUsableSize);
|
|
} catch (ex) {
|
|
handleException(ex);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Populate about:memory using the data in the given JSON string.
|
|
*
|
|
* @param aStr
|
|
* A string containing JSON data conforming to the schema used by
|
|
* nsIMemoryReporterManager::dumpReports.
|
|
*/
|
|
function updateAboutMemoryFromJSONString(aStr)
|
|
{
|
|
try {
|
|
let obj = parseAndUnwrapIfCrashDump(aStr);
|
|
updateAboutMemoryFromJSONObject(obj);
|
|
} catch (ex) {
|
|
handleException(ex);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Loads the contents of a file into a string and passes that to a callback.
|
|
*
|
|
* @param aFilename
|
|
* The name of the file being read from.
|
|
* @param aTitleNote
|
|
* A description to put in the page title upon completion.
|
|
* @param aFn
|
|
* The function to call and pass the read string to upon completion.
|
|
*/
|
|
function loadMemoryReportsFromFile(aFilename, aTitleNote, aFn)
|
|
{
|
|
updateMainAndFooter("Loading...", HIDE_FOOTER);
|
|
|
|
try {
|
|
let reader = new FileReader();
|
|
reader.onerror = () => { throw "FileReader.onerror"; };
|
|
reader.onabort = () => { throw "FileReader.onabort"; };
|
|
reader.onload = (aEvent) => {
|
|
// Clear "Loading..." from above.
|
|
updateTitleMainAndFooter(aTitleNote, "", SHOW_FOOTER);
|
|
aFn(aEvent.target.result);
|
|
};
|
|
|
|
// If it doesn't have a .gz suffix, read it as a (legacy) ungzipped file.
|
|
if (!aFilename.endsWith(".gz")) {
|
|
reader.readAsText(new File(aFilename));
|
|
return;
|
|
}
|
|
|
|
// Read compressed gzip file.
|
|
let converter = new nsGzipConverter();
|
|
converter.asyncConvertData("gzip", "uncompressed", {
|
|
data: [],
|
|
onStartRequest: function(aR, aC) {},
|
|
onDataAvailable: function(aR, aC, aStream, aO, aCount) {
|
|
let bi = new nsBinaryStream(aStream);
|
|
this.data.push(bi.readBytes(aCount));
|
|
},
|
|
onStopRequest: function(aR, aC, aStatusCode) {
|
|
try {
|
|
if (!Components.isSuccessCode(aStatusCode)) {
|
|
throw aStatusCode;
|
|
}
|
|
reader.readAsText(new Blob(this.data));
|
|
} catch (ex) {
|
|
handleException(ex);
|
|
}
|
|
}
|
|
}, null);
|
|
|
|
let file = new nsFile(aFilename);
|
|
let fileChan = NetUtil.newChannel({
|
|
uri: Services.io.newFileURI(file),
|
|
loadUsingSystemPrincipal: true
|
|
});
|
|
fileChan.asyncOpen2(converter);
|
|
|
|
} catch (ex) {
|
|
handleException(ex);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Like updateAboutMemoryFromReporters(), but gets its data from a file instead
|
|
* of the memory reporters.
|
|
*
|
|
* @param aFilename
|
|
* The name of the file being read from. The expected format of the
|
|
* file's contents is described in a comment in nsIMemoryInfoDumper.idl.
|
|
*/
|
|
function updateAboutMemoryFromFile(aFilename)
|
|
{
|
|
loadMemoryReportsFromFile(aFilename, /* title note */ aFilename,
|
|
updateAboutMemoryFromJSONString);
|
|
}
|
|
|
|
/**
|
|
* Like updateAboutMemoryFromFile(), but gets its data from a two files and
|
|
* diffs them.
|
|
*
|
|
* @param aFilename1
|
|
* The name of the first file being read from.
|
|
* @param aFilename2
|
|
* The name of the first file being read from.
|
|
*/
|
|
function updateAboutMemoryFromTwoFiles(aFilename1, aFilename2)
|
|
{
|
|
let titleNote = "diff of " + aFilename1 + " and " + aFilename2;
|
|
loadMemoryReportsFromFile(aFilename1, titleNote, function(aStr1) {
|
|
loadMemoryReportsFromFile(aFilename2, titleNote, function(aStr2) {
|
|
try {
|
|
let obj1 = parseAndUnwrapIfCrashDump(aStr1);
|
|
let obj2 = parseAndUnwrapIfCrashDump(aStr2);
|
|
gIsDiff = true;
|
|
updateAboutMemoryFromJSONObject(diffJSONObjects(obj1, obj2));
|
|
gIsDiff = false;
|
|
} catch (ex) {
|
|
handleException(ex);
|
|
}
|
|
});
|
|
});
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
// Something unlikely to appear in a process name.
|
|
var kProcessPathSep = "^:^:^";
|
|
|
|
// Short for "diff report".
|
|
function DReport(aKind, aUnits, aAmount, aDescription, aNMerged, aPresence)
|
|
{
|
|
this._kind = aKind;
|
|
this._units = aUnits;
|
|
this._amount = aAmount;
|
|
this._description = aDescription;
|
|
this._nMerged = aNMerged;
|
|
if (aPresence !== undefined) {
|
|
this._presence = aPresence;
|
|
}
|
|
}
|
|
|
|
DReport.prototype = {
|
|
assertCompatible: function(aKind, aUnits)
|
|
{
|
|
assert(this._kind == aKind, "Mismatched kinds");
|
|
assert(this._units == aUnits, "Mismatched units");
|
|
|
|
// We don't check that the "description" properties match. This is because
|
|
// on Linux we can get cases where the paths are the same but the
|
|
// descriptions differ, like this:
|
|
//
|
|
// "path": "size/other-files/icon-theme.cache/[r--p]",
|
|
// "description": "/usr/share/icons/gnome/icon-theme.cache (read-only, not executable, private)"
|
|
//
|
|
// "path": "size/other-files/icon-theme.cache/[r--p]"
|
|
// "description": "/usr/share/icons/hicolor/icon-theme.cache (read-only, not executable, private)"
|
|
//
|
|
// In those cases, we just use the description from the first-encountered
|
|
// one, which is what about:memory also does.
|
|
// (Note: reports with those paths are no longer generated, but allowing
|
|
// the descriptions to differ seems reasonable.)
|
|
},
|
|
|
|
merge: function(aJr) {
|
|
this.assertCompatible(aJr.kind, aJr.units);
|
|
this._amount += aJr.amount;
|
|
this._nMerged++;
|
|
},
|
|
|
|
toJSON: function(aProcess, aPath, aAmount) {
|
|
return {
|
|
process: aProcess,
|
|
path: aPath,
|
|
kind: this._kind,
|
|
units: this._units,
|
|
amount: aAmount,
|
|
description: this._description,
|
|
_presence: this._presence
|
|
};
|
|
}
|
|
};
|
|
|
|
// Constants that indicate if a DReport was present only in one of the data
|
|
// sets, or had to be added for balance.
|
|
DReport.PRESENT_IN_FIRST_ONLY = 1;
|
|
DReport.PRESENT_IN_SECOND_ONLY = 2;
|
|
DReport.ADDED_FOR_BALANCE = 3;
|
|
|
|
/**
|
|
* Make a report map, which has combined path+process strings for keys, and
|
|
* DReport objects for values.
|
|
*
|
|
* @param aJSONReports
|
|
* The |reports| field of a JSON object.
|
|
* @return The constructed report map.
|
|
*/
|
|
function makeDReportMap(aJSONReports)
|
|
{
|
|
let dreportMap = {};
|
|
for (let i = 0; i < aJSONReports.length; i++) {
|
|
let jr = aJSONReports[i];
|
|
|
|
assert(jr.process !== undefined, "Missing process");
|
|
assert(jr.path !== undefined, "Missing path");
|
|
assert(jr.kind !== undefined, "Missing kind");
|
|
assert(jr.units !== undefined, "Missing units");
|
|
assert(jr.amount !== undefined, "Missing amount");
|
|
assert(jr.description !== undefined, "Missing description");
|
|
|
|
// Strip out some non-deterministic stuff that prevents clean diffs.
|
|
// Ideally the memory reports themselves would contain information about
|
|
// which parts of the the process and path need to be stripped -- saving us
|
|
// from hardwiring knowledge of specific reporters here -- but we have no
|
|
// mechanism for that. (Any future redesign of how memory reporters work
|
|
// should include such a mechanism.)
|
|
|
|
// Strip PIDs:
|
|
// - pid 123
|
|
// - pid=123
|
|
let pidRegex = /pid([ =])\d+/g;
|
|
let pidSubst = "pid$1NNN";
|
|
let process = jr.process.replace(pidRegex, pidSubst);
|
|
let path = jr.path.replace(pidRegex, pidSubst);
|
|
|
|
// Strip addresses:
|
|
// - .../js-zone(0x12345678)/...
|
|
// - .../zone(0x12345678)/...
|
|
// - .../worker(<URL>, 0x12345678)/...
|
|
path = path.replace(/zone\(0x[0-9A-Fa-f]+\)\//, "zone(0xNNN)/");
|
|
path = path.replace(/\/worker\((.+), 0x[0-9A-Fa-f]+\)\//,
|
|
"/worker($1, 0xNNN)/");
|
|
|
|
// Strip top window IDs:
|
|
// - explicit/window-objects/top(<URL>, id=123)/...
|
|
path = path.replace(/^(explicit\/window-objects\/top\(.*, id=)\d+\)/,
|
|
"$1NNN)");
|
|
|
|
// Strip null principal UUIDs (but not other UUIDs, because they may be
|
|
// deterministic, such as those used by add-ons).
|
|
path = path.replace(
|
|
/moz-nullprincipal:{........-....-....-....-............}/g,
|
|
"moz-nullprincipal:{NNNNNNNN-NNNN-NNNN-NNNN-NNNNNNNNNNNN}");
|
|
|
|
// Normalize omni.ja! paths.
|
|
path = path.replace(/jar:file:\\\\\\(.+)\\omni.ja!/,
|
|
"jar:file:\\\\\\...\\omni.ja!");
|
|
|
|
let processPath = process + kProcessPathSep + path;
|
|
let rOld = dreportMap[processPath];
|
|
if (rOld === undefined) {
|
|
dreportMap[processPath] =
|
|
new DReport(jr.kind, jr.units, jr.amount, jr.description, 1, undefined);
|
|
} else {
|
|
rOld.merge(jr);
|
|
}
|
|
}
|
|
return dreportMap;
|
|
}
|
|
|
|
// Return a new dreportMap which is the diff of two dreportMaps. Empties
|
|
// aDReportMap2 along the way.
|
|
function diffDReportMaps(aDReportMap1, aDReportMap2)
|
|
{
|
|
let result = {};
|
|
|
|
for (let processPath in aDReportMap1) {
|
|
let r1 = aDReportMap1[processPath];
|
|
let r2 = aDReportMap2[processPath];
|
|
let r2_amount, r2_nMerged;
|
|
let presence;
|
|
if (r2 !== undefined) {
|
|
r1.assertCompatible(r2._kind, r2._units);
|
|
r2_amount = r2._amount;
|
|
r2_nMerged = r2._nMerged;
|
|
delete aDReportMap2[processPath];
|
|
presence = undefined; // represents that it's present in both
|
|
} else {
|
|
r2_amount = 0;
|
|
r2_nMerged = 0;
|
|
presence = DReport.PRESENT_IN_FIRST_ONLY;
|
|
}
|
|
result[processPath] =
|
|
new DReport(r1._kind, r1._units, r2_amount - r1._amount, r1._description,
|
|
Math.max(r1._nMerged, r2_nMerged), presence);
|
|
}
|
|
|
|
for (let processPath in aDReportMap2) {
|
|
let r2 = aDReportMap2[processPath];
|
|
result[processPath] = new DReport(r2._kind, r2._units, r2._amount,
|
|
r2._description, r2._nMerged,
|
|
DReport.PRESENT_IN_SECOND_ONLY);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
function makeJSONReports(aDReportMap)
|
|
{
|
|
let reports = [];
|
|
for (let processPath in aDReportMap) {
|
|
let r = aDReportMap[processPath];
|
|
if (r._amount !== 0) {
|
|
// If _nMerged > 1, we give the full (aggregated) amount in the first
|
|
// copy, and then use amount=0 in the remainder. When viewed in
|
|
// about:memory, this shows up as an entry with a "[2]"-style suffix
|
|
// and the correct amount.
|
|
let split = processPath.split(kProcessPathSep);
|
|
assert(split.length >= 2);
|
|
let process = split.shift();
|
|
let path = split.join();
|
|
reports.push(r.toJSON(process, path, r._amount));
|
|
for (let i = 1; i < r._nMerged; i++) {
|
|
reports.push(r.toJSON(process, path, 0));
|
|
}
|
|
}
|
|
}
|
|
|
|
return reports;
|
|
}
|
|
|
|
// Diff two JSON objects holding memory reports.
|
|
function diffJSONObjects(aJson1, aJson2)
|
|
{
|
|
function simpleProp(aProp)
|
|
{
|
|
assert(aJson1[aProp] !== undefined && aJson1[aProp] === aJson2[aProp],
|
|
aProp + " properties don't match");
|
|
return aJson1[aProp];
|
|
}
|
|
|
|
return {
|
|
version: simpleProp("version"),
|
|
|
|
hasMozMallocUsableSize: simpleProp("hasMozMallocUsableSize"),
|
|
|
|
reports: makeJSONReports(diffDReportMaps(makeDReportMap(aJson1.reports),
|
|
makeDReportMap(aJson2.reports)))
|
|
};
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
// |PColl| is short for "process collection".
|
|
function PColl()
|
|
{
|
|
this._trees = {};
|
|
this._degenerates = {};
|
|
this._heapTotal = 0;
|
|
}
|
|
|
|
/**
|
|
* Processes reports (whether from reporters or from a file) and append the
|
|
* main part of the page.
|
|
*
|
|
* @param aProcessReports
|
|
* Function that extracts the memory reports from the reporters or from
|
|
* file.
|
|
* @param aHasMozMallocUsableSize
|
|
* Boolean indicating if moz_malloc_usable_size works.
|
|
*/
|
|
function appendAboutMemoryMain(aProcessReports, aHasMozMallocUsableSize)
|
|
{
|
|
let pcollsByProcess = {};
|
|
|
|
function handleReport(aProcess, aUnsafePath, aKind, aUnits, aAmount,
|
|
aDescription, aPresence)
|
|
{
|
|
if (aUnsafePath.startsWith("explicit/")) {
|
|
assertInput(aKind === KIND_HEAP || aKind === KIND_NONHEAP,
|
|
"bad explicit kind");
|
|
assertInput(aUnits === UNITS_BYTES, "bad explicit units");
|
|
}
|
|
|
|
assert(aPresence === undefined ||
|
|
aPresence == DReport.PRESENT_IN_FIRST_ONLY ||
|
|
aPresence == DReport.PRESENT_IN_SECOND_ONLY,
|
|
"bad presence");
|
|
|
|
let process = aProcess === "" ? gUnnamedProcessStr : aProcess;
|
|
let unsafeNames = aUnsafePath.split('/');
|
|
let unsafeName0 = unsafeNames[0];
|
|
let isDegenerate = unsafeNames.length === 1;
|
|
|
|
// Get the PColl table for the process, creating it if necessary.
|
|
let pcoll = pcollsByProcess[process];
|
|
if (!pcollsByProcess[process]) {
|
|
pcoll = pcollsByProcess[process] = new PColl();
|
|
}
|
|
|
|
// Get the root node, creating it if necessary.
|
|
let psubcoll = isDegenerate ? pcoll._degenerates : pcoll._trees;
|
|
let t = psubcoll[unsafeName0];
|
|
if (!t) {
|
|
t = psubcoll[unsafeName0] =
|
|
new TreeNode(unsafeName0, aUnits, isDegenerate);
|
|
}
|
|
|
|
if (!isDegenerate) {
|
|
// Add any missing nodes in the tree implied by aUnsafePath, and fill in
|
|
// the properties that we can with a top-down traversal.
|
|
for (let i = 1; i < unsafeNames.length; i++) {
|
|
let unsafeName = unsafeNames[i];
|
|
let u = t.findKid(unsafeName);
|
|
if (!u) {
|
|
u = new TreeNode(unsafeName, aUnits, isDegenerate);
|
|
if (!t._kids) {
|
|
t._kids = [];
|
|
}
|
|
t._kids.push(u);
|
|
}
|
|
t = u;
|
|
}
|
|
|
|
// Update the heap total if necessary.
|
|
if (unsafeName0 === "explicit" && aKind == KIND_HEAP) {
|
|
pcollsByProcess[process]._heapTotal += aAmount;
|
|
}
|
|
}
|
|
|
|
if (t._amount) {
|
|
// Duplicate! Sum the values and mark it as a dup.
|
|
t._amount += aAmount;
|
|
t._nMerged = t._nMerged ? t._nMerged + 1 : 2;
|
|
assert(t._presence === aPresence, "presence mismatch");
|
|
} else {
|
|
// New leaf node. Fill in extra node details from the report.
|
|
t._amount = aAmount;
|
|
t._description = aDescription;
|
|
if (aPresence !== undefined) {
|
|
t._presence = aPresence;
|
|
}
|
|
}
|
|
}
|
|
|
|
function displayReports()
|
|
{
|
|
// Sort the processes.
|
|
let processes = Object.keys(pcollsByProcess);
|
|
processes.sort(function(aProcessA, aProcessB) {
|
|
assert(aProcessA != aProcessB,
|
|
"Elements of Object.keys() should be unique, but " +
|
|
"saw duplicate '" + aProcessA + "' elem.");
|
|
|
|
// Always put the main process first.
|
|
if (aProcessA == gUnnamedProcessStr) {
|
|
return -1;
|
|
}
|
|
if (aProcessB == gUnnamedProcessStr) {
|
|
return 1;
|
|
}
|
|
|
|
// Then sort by resident size.
|
|
let nodeA = pcollsByProcess[aProcessA]._degenerates['resident'];
|
|
let nodeB = pcollsByProcess[aProcessB]._degenerates['resident'];
|
|
let residentA = nodeA ? nodeA._amount : -1;
|
|
let residentB = nodeB ? nodeB._amount : -1;
|
|
|
|
if (residentA > residentB) {
|
|
return -1;
|
|
}
|
|
if (residentA < residentB) {
|
|
return 1;
|
|
}
|
|
|
|
// Then sort by process name.
|
|
if (aProcessA < aProcessB) {
|
|
return -1;
|
|
}
|
|
if (aProcessA > aProcessB) {
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
});
|
|
|
|
// Generate output for each process.
|
|
for (let i = 0; i < processes.length; i++) {
|
|
let process = processes[i];
|
|
let section = appendElement(gMain, 'div', 'section');
|
|
|
|
appendProcessAboutMemoryElements(section, i, process,
|
|
pcollsByProcess[process]._trees,
|
|
pcollsByProcess[process]._degenerates,
|
|
pcollsByProcess[process]._heapTotal,
|
|
aHasMozMallocUsableSize);
|
|
}
|
|
}
|
|
|
|
aProcessReports(handleReport, displayReports);
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
// There are two kinds of TreeNode.
|
|
// - Leaf TreeNodes correspond to reports.
|
|
// - Non-leaf TreeNodes are just scaffolding nodes for the tree; their values
|
|
// are derived from their children.
|
|
// Some trees are "degenerate", i.e. they contain a single node, i.e. they
|
|
// correspond to a report whose path has no '/' separators.
|
|
function TreeNode(aUnsafeName, aUnits, aIsDegenerate)
|
|
{
|
|
this._units = aUnits;
|
|
this._unsafeName = aUnsafeName;
|
|
if (aIsDegenerate) {
|
|
this._isDegenerate = true;
|
|
}
|
|
|
|
// Leaf TreeNodes have these properties added immediately after construction:
|
|
// - _amount
|
|
// - _description
|
|
// - _nMerged (only defined if > 1)
|
|
// - _presence (only defined if value is PRESENT_IN_{FIRST,SECOND}_ONLY)
|
|
//
|
|
// Non-leaf TreeNodes have these properties added later:
|
|
// - _kids
|
|
// - _amount
|
|
// - _description
|
|
// - _hideKids (only defined if true)
|
|
// - _maxAbsDescendant (on-demand, only when gIsDiff is set)
|
|
}
|
|
|
|
TreeNode.prototype = {
|
|
findKid: function(aUnsafeName) {
|
|
if (this._kids) {
|
|
for (let i = 0; i < this._kids.length; i++) {
|
|
if (this._kids[i]._unsafeName === aUnsafeName) {
|
|
return this._kids[i];
|
|
}
|
|
}
|
|
}
|
|
return undefined;
|
|
},
|
|
|
|
// When gIsDiff is false, tree operations -- sorting and determining if a
|
|
// sub-tree is significant -- are straightforward. But when gIsDiff is true,
|
|
// the combination of positive and negative values within a tree complicates
|
|
// things. So for a non-leaf node, instead of just looking at _amount, we
|
|
// instead look at the maximum absolute value of the node and all of its
|
|
// descendants.
|
|
maxAbsDescendant: function() {
|
|
if (!this._kids) {
|
|
// No kids? Just return the absolute value of the amount.
|
|
return Math.abs(this._amount);
|
|
}
|
|
|
|
if ('_maxAbsDescendant' in this) {
|
|
// We've computed this before? Return the saved value.
|
|
return this._maxAbsDescendant;
|
|
}
|
|
|
|
// Compute the maximum absolute value of all descendants.
|
|
let max = Math.abs(this._amount);
|
|
for (let i = 0; i < this._kids.length; i++) {
|
|
max = Math.max(max, this._kids[i].maxAbsDescendant());
|
|
}
|
|
this._maxAbsDescendant = max;
|
|
return max;
|
|
},
|
|
|
|
toString: function() {
|
|
switch (this._units) {
|
|
case UNITS_BYTES: return formatBytes(this._amount);
|
|
case UNITS_COUNT:
|
|
case UNITS_COUNT_CUMULATIVE: return formatInt(this._amount);
|
|
case UNITS_PERCENTAGE: return formatPercentage(this._amount);
|
|
default:
|
|
assertInput(false, "bad units in TreeNode.toString");
|
|
}
|
|
}
|
|
};
|
|
|
|
// Sort TreeNodes first by size, then by name. The latter is important for the
|
|
// about:memory tests, which need a predictable ordering of reporters which
|
|
// have the same amount.
|
|
TreeNode.compareAmounts = function(aA, aB) {
|
|
let a, b;
|
|
if (gIsDiff) {
|
|
a = aA.maxAbsDescendant();
|
|
b = aB.maxAbsDescendant();
|
|
} else {
|
|
a = aA._amount;
|
|
b = aB._amount;
|
|
}
|
|
if (a > b) {
|
|
return -1;
|
|
}
|
|
if (a < b) {
|
|
return 1;
|
|
}
|
|
return TreeNode.compareUnsafeNames(aA, aB);
|
|
};
|
|
|
|
TreeNode.compareUnsafeNames = function(aA, aB) {
|
|
return aA._unsafeName < aB._unsafeName ? -1 :
|
|
aA._unsafeName > aB._unsafeName ? 1 :
|
|
0;
|
|
};
|
|
|
|
|
|
/**
|
|
* Fill in the remaining properties for the specified tree in a bottom-up
|
|
* fashion.
|
|
*
|
|
* @param aRoot
|
|
* The tree root.
|
|
*/
|
|
function fillInTree(aRoot)
|
|
{
|
|
// Fill in the remaining properties bottom-up.
|
|
function fillInNonLeafNodes(aT)
|
|
{
|
|
if (!aT._kids) {
|
|
// Leaf node. Has already been filled in.
|
|
|
|
} else if (aT._kids.length === 1 && aT != aRoot) {
|
|
// Non-root, non-leaf node with one child. Merge the child with the node
|
|
// to avoid redundant entries.
|
|
let kid = aT._kids[0];
|
|
let kidBytes = fillInNonLeafNodes(kid);
|
|
aT._unsafeName += '/' + kid._unsafeName;
|
|
if (kid._kids) {
|
|
aT._kids = kid._kids;
|
|
} else {
|
|
delete aT._kids;
|
|
}
|
|
aT._amount = kid._amount;
|
|
aT._description = kid._description;
|
|
if (kid._nMerged !== undefined) {
|
|
aT._nMerged = kid._nMerged
|
|
}
|
|
assert(!aT._hideKids && !kid._hideKids, "_hideKids set when merging");
|
|
|
|
} else {
|
|
// Non-leaf node with multiple children. Derive its _amount and
|
|
// _description entirely from its children...
|
|
let kidsBytes = 0;
|
|
for (let i = 0; i < aT._kids.length; i++) {
|
|
kidsBytes += fillInNonLeafNodes(aT._kids[i]);
|
|
}
|
|
|
|
// ... except in one special case. When diffing two memory report sets,
|
|
// if one set has a node with children and the other has the same node
|
|
// but without children -- e.g. the first has "a/b/c" and "a/b/d", but
|
|
// the second only has "a/b" -- we need to add a fake node "a/b/(fake)"
|
|
// to the second to make the trees comparable. It's ugly, but it works.
|
|
if (aT._amount !== undefined &&
|
|
(aT._presence === DReport.PRESENT_IN_FIRST_ONLY ||
|
|
aT._presence === DReport.PRESENT_IN_SECOND_ONLY)) {
|
|
aT._amount += kidsBytes;
|
|
let fake = new TreeNode('(fake child)', aT._units);
|
|
fake._presence = DReport.ADDED_FOR_BALANCE;
|
|
fake._amount = aT._amount - kidsBytes;
|
|
aT._kids.push(fake);
|
|
delete aT._presence;
|
|
} else {
|
|
assert(aT._amount === undefined,
|
|
"_amount already set for non-leaf node")
|
|
aT._amount = kidsBytes;
|
|
}
|
|
aT._description = "The sum of all entries below this one.";
|
|
}
|
|
return aT._amount;
|
|
}
|
|
|
|
// cannotMerge is set because don't want to merge into a tree's root node.
|
|
fillInNonLeafNodes(aRoot);
|
|
}
|
|
|
|
/**
|
|
* Compute the "heap-unclassified" value and insert it into the "explicit"
|
|
* tree.
|
|
*
|
|
* @param aT
|
|
* The "explicit" tree.
|
|
* @param aHeapAllocatedNode
|
|
* The "heap-allocated" tree node.
|
|
* @param aHeapTotal
|
|
* The sum of all explicit HEAP reports for this process.
|
|
* @return A boolean indicating if "heap-allocated" is known for the process.
|
|
*/
|
|
function addHeapUnclassifiedNode(aT, aHeapAllocatedNode, aHeapTotal)
|
|
{
|
|
if (aHeapAllocatedNode === undefined)
|
|
return false;
|
|
|
|
if (aT.findKid("heap-unclassified")) {
|
|
// heap-unclassified was already calculated, there's nothing left to do.
|
|
// This can happen when memory reports are exported from areweslimyet.com.
|
|
return true;
|
|
}
|
|
|
|
assert(aHeapAllocatedNode._isDegenerate, "heap-allocated is not degenerate");
|
|
let heapAllocatedBytes = aHeapAllocatedNode._amount;
|
|
let heapUnclassifiedT = new TreeNode("heap-unclassified", UNITS_BYTES);
|
|
heapUnclassifiedT._amount = heapAllocatedBytes - aHeapTotal;
|
|
heapUnclassifiedT._description =
|
|
"Memory not classified by a more specific report. This includes " +
|
|
"slop bytes due to internal fragmentation in the heap allocator " +
|
|
"(caused when the allocator rounds up request sizes).";
|
|
aT._kids.push(heapUnclassifiedT);
|
|
aT._amount += heapUnclassifiedT._amount;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Sort all kid nodes from largest to smallest, and insert aggregate nodes
|
|
* where appropriate.
|
|
*
|
|
* @param aTotalBytes
|
|
* The size of the tree's root node.
|
|
* @param aT
|
|
* The tree.
|
|
*/
|
|
function sortTreeAndInsertAggregateNodes(aTotalBytes, aT)
|
|
{
|
|
const kSignificanceThresholdPerc = 1;
|
|
|
|
function isInsignificant(aT)
|
|
{
|
|
if (gVerbose.checked)
|
|
return false;
|
|
|
|
let perc = gIsDiff
|
|
? 100 * aT.maxAbsDescendant() / Math.abs(aTotalBytes)
|
|
: 100 * aT._amount / aTotalBytes;
|
|
return perc < kSignificanceThresholdPerc;
|
|
}
|
|
|
|
if (!aT._kids) {
|
|
return;
|
|
}
|
|
|
|
aT._kids.sort(TreeNode.compareAmounts);
|
|
|
|
// If the first child is insignificant, they all are, and there's no point
|
|
// creating an aggregate node that lacks siblings. Just set the parent's
|
|
// _hideKids property and process all children.
|
|
if (isInsignificant(aT._kids[0])) {
|
|
aT._hideKids = true;
|
|
for (let i = 0; i < aT._kids.length; i++) {
|
|
sortTreeAndInsertAggregateNodes(aTotalBytes, aT._kids[i]);
|
|
}
|
|
return;
|
|
}
|
|
|
|
// Look at all children except the last one.
|
|
let i;
|
|
for (i = 0; i < aT._kids.length - 1; i++) {
|
|
if (isInsignificant(aT._kids[i])) {
|
|
// This child is below the significance threshold. If there are other
|
|
// (smaller) children remaining, move them under an aggregate node.
|
|
let i0 = i;
|
|
let nAgg = aT._kids.length - i0;
|
|
// Create an aggregate node. Inherit units from the parent; everything
|
|
// in the tree should have the same units anyway (we test this later).
|
|
let aggT = new TreeNode("(" + nAgg + " tiny)", aT._units);
|
|
aggT._kids = [];
|
|
let aggBytes = 0;
|
|
for ( ; i < aT._kids.length; i++) {
|
|
aggBytes += aT._kids[i]._amount;
|
|
aggT._kids.push(aT._kids[i]);
|
|
}
|
|
aggT._hideKids = true;
|
|
aggT._amount = aggBytes;
|
|
aggT._description =
|
|
nAgg + " sub-trees that are below the " + kSignificanceThresholdPerc +
|
|
"% significance threshold.";
|
|
aT._kids.splice(i0, nAgg, aggT);
|
|
aT._kids.sort(TreeNode.compareAmounts);
|
|
|
|
// Process the moved children.
|
|
for (i = 0; i < aggT._kids.length; i++) {
|
|
sortTreeAndInsertAggregateNodes(aTotalBytes, aggT._kids[i]);
|
|
}
|
|
return;
|
|
}
|
|
|
|
sortTreeAndInsertAggregateNodes(aTotalBytes, aT._kids[i]);
|
|
}
|
|
|
|
// The first n-1 children were significant. Don't consider if the last child
|
|
// is significant; there's no point creating an aggregate node that only has
|
|
// one child. Just process it.
|
|
sortTreeAndInsertAggregateNodes(aTotalBytes, aT._kids[i]);
|
|
}
|
|
|
|
// Global variable indicating if we've seen any invalid values for this
|
|
// process; it holds the unsafePaths of any such reports. It is reset for
|
|
// each new process.
|
|
var gUnsafePathsWithInvalidValuesForThisProcess = [];
|
|
|
|
function appendWarningElements(aP, aHasKnownHeapAllocated,
|
|
aHasMozMallocUsableSize)
|
|
{
|
|
if (!aHasKnownHeapAllocated && !aHasMozMallocUsableSize) {
|
|
appendElementWithText(aP, "p", "",
|
|
"WARNING: the 'heap-allocated' memory reporter and the " +
|
|
"moz_malloc_usable_size() function do not work for this platform " +
|
|
"and/or configuration. This means that 'heap-unclassified' is not " +
|
|
"shown and the 'explicit' tree shows much less memory than it should.\n\n");
|
|
|
|
} else if (!aHasKnownHeapAllocated) {
|
|
appendElementWithText(aP, "p", "",
|
|
"WARNING: the 'heap-allocated' memory reporter does not work for this " +
|
|
"platform and/or configuration. This means that 'heap-unclassified' " +
|
|
"is not shown and the 'explicit' tree shows less memory than it should.\n\n");
|
|
|
|
} else if (!aHasMozMallocUsableSize) {
|
|
appendElementWithText(aP, "p", "",
|
|
"WARNING: the moz_malloc_usable_size() function does not work for " +
|
|
"this platform and/or configuration. This means that much of the " +
|
|
"heap-allocated memory is not measured by individual memory reporters " +
|
|
"and so will fall under 'heap-unclassified'.\n\n");
|
|
}
|
|
|
|
if (gUnsafePathsWithInvalidValuesForThisProcess.length > 0) {
|
|
let div = appendElement(aP, "div");
|
|
appendElementWithText(div, "p", "",
|
|
"WARNING: the following values are negative or unreasonably large.\n");
|
|
|
|
let ul = appendElement(div, "ul");
|
|
for (let i = 0;
|
|
i < gUnsafePathsWithInvalidValuesForThisProcess.length;
|
|
i++)
|
|
{
|
|
appendTextNode(ul, " ");
|
|
appendElementWithText(ul, "li", "",
|
|
flipBackslashes(gUnsafePathsWithInvalidValuesForThisProcess[i]) + "\n");
|
|
}
|
|
|
|
appendElementWithText(div, "p", "",
|
|
"This indicates a defect in one or more memory reporters. The " +
|
|
"invalid values are highlighted.\n\n");
|
|
gUnsafePathsWithInvalidValuesForThisProcess = []; // reset for the next process
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Appends the about:memory elements for a single process.
|
|
*
|
|
* @param aP
|
|
* The parent DOM node.
|
|
* @param aN
|
|
* The number of the process, starting at 0.
|
|
* @param aProcess
|
|
* The name of the process.
|
|
* @param aTrees
|
|
* The table of non-degenerate trees for this process.
|
|
* @param aDegenerates
|
|
* The table of degenerate trees for this process.
|
|
* @param aHasMozMallocUsableSize
|
|
* Boolean indicating if moz_malloc_usable_size works.
|
|
* @return The generated text.
|
|
*/
|
|
function appendProcessAboutMemoryElements(aP, aN, aProcess, aTrees,
|
|
aDegenerates, aHeapTotal,
|
|
aHasMozMallocUsableSize)
|
|
{
|
|
const kUpwardsArrow = "\u2191",
|
|
kDownwardsArrow = "\u2193";
|
|
|
|
let appendLink = function(aHere, aThere, aArrow) {
|
|
let link = appendElementWithText(aP, "a", "upDownArrow", aArrow);
|
|
link.href = "#" + aThere + aN;
|
|
link.id = aHere + aN;
|
|
link.title = "Go to the " + aThere + " of " + aProcess;
|
|
link.style = "text-decoration: none";
|
|
|
|
// This jumps to the anchor without the page location getting the anchor
|
|
// name tacked onto its end, which is what happens with a vanilla link.
|
|
link.addEventListener("click", function(event) {
|
|
document.documentElement.scrollTop =
|
|
document.querySelector(event.target.href).offsetTop;
|
|
event.preventDefault();
|
|
}, false);
|
|
|
|
// This gives nice spacing when we copy and paste.
|
|
appendElementWithText(aP, "span", "", "\n");
|
|
}
|
|
|
|
appendElementWithText(aP, "h1", "", aProcess);
|
|
appendLink("start", "end", kDownwardsArrow);
|
|
|
|
// We'll fill this in later.
|
|
let warningsDiv = appendElement(aP, "div", "accuracyWarning");
|
|
|
|
// The explicit tree.
|
|
let hasExplicitTree;
|
|
let hasKnownHeapAllocated;
|
|
{
|
|
let treeName = "explicit";
|
|
let t = aTrees[treeName];
|
|
if (t) {
|
|
let pre = appendSectionHeader(aP, "Explicit Allocations");
|
|
hasExplicitTree = true;
|
|
fillInTree(t);
|
|
// Using the "heap-allocated" reporter here instead of
|
|
// nsMemoryReporterManager.heapAllocated goes against the usual pattern.
|
|
// But the "heap-allocated" node will go in the tree like the others, so
|
|
// we have to deal with it, and once we're dealing with it, it's easier
|
|
// to keep doing so rather than switching to the distinguished amount.
|
|
hasKnownHeapAllocated =
|
|
aDegenerates &&
|
|
addHeapUnclassifiedNode(t, aDegenerates["heap-allocated"], aHeapTotal);
|
|
sortTreeAndInsertAggregateNodes(t._amount, t);
|
|
t._description = explicitTreeDescription;
|
|
appendTreeElements(pre, t, aProcess, "");
|
|
delete aTrees[treeName];
|
|
}
|
|
appendTextNode(aP, "\n"); // gives nice spacing when we copy and paste
|
|
}
|
|
|
|
// Fill in and sort all the non-degenerate other trees.
|
|
let otherTrees = [];
|
|
for (let unsafeName in aTrees) {
|
|
let t = aTrees[unsafeName];
|
|
assert(!t._isDegenerate, "tree is degenerate");
|
|
fillInTree(t);
|
|
sortTreeAndInsertAggregateNodes(t._amount, t);
|
|
otherTrees.push(t);
|
|
}
|
|
otherTrees.sort(TreeNode.compareUnsafeNames);
|
|
|
|
// Get the length of the longest root value among the degenerate other trees,
|
|
// and sort them as well.
|
|
let otherDegenerates = [];
|
|
let maxStringLength = 0;
|
|
for (let unsafeName in aDegenerates) {
|
|
let t = aDegenerates[unsafeName];
|
|
assert(t._isDegenerate, "tree is not degenerate");
|
|
let length = t.toString().length;
|
|
if (length > maxStringLength) {
|
|
maxStringLength = length;
|
|
}
|
|
otherDegenerates.push(t);
|
|
}
|
|
otherDegenerates.sort(TreeNode.compareUnsafeNames);
|
|
|
|
// Now generate the elements, putting non-degenerate trees first.
|
|
let pre = appendSectionHeader(aP, "Other Measurements");
|
|
for (let i = 0; i < otherTrees.length; i++) {
|
|
let t = otherTrees[i];
|
|
appendTreeElements(pre, t, aProcess, "");
|
|
appendTextNode(pre, "\n"); // blank lines after non-degenerate trees
|
|
}
|
|
for (let i = 0; i < otherDegenerates.length; i++) {
|
|
let t = otherDegenerates[i];
|
|
let padText = pad("", maxStringLength - t.toString().length, ' ');
|
|
appendTreeElements(pre, t, aProcess, padText);
|
|
}
|
|
appendTextNode(aP, "\n"); // gives nice spacing when we copy and paste
|
|
|
|
// Add any warnings about inaccuracies in the "explicit" tree due to platform
|
|
// limitations. These must be computed after generating all the text. The
|
|
// newlines give nice spacing if we copy+paste into a text buffer.
|
|
if (hasExplicitTree) {
|
|
appendWarningElements(warningsDiv, hasKnownHeapAllocated,
|
|
aHasMozMallocUsableSize);
|
|
}
|
|
|
|
appendElementWithText(aP, "h3", "", "End of " + aProcess);
|
|
appendLink("end", "start", kUpwardsArrow);
|
|
}
|
|
|
|
/**
|
|
* Determines if a number has a negative sign when converted to a string.
|
|
* Works even for -0.
|
|
*
|
|
* @param aN
|
|
* The number.
|
|
* @return A boolean.
|
|
*/
|
|
function hasNegativeSign(aN)
|
|
{
|
|
if (aN === 0) { // this succeeds for 0 and -0
|
|
return 1 / aN === -Infinity; // this succeeds for -0
|
|
}
|
|
return aN < 0;
|
|
}
|
|
|
|
/**
|
|
* Formats an int as a human-readable string.
|
|
*
|
|
* @param aN
|
|
* The integer to format.
|
|
* @param aExtra
|
|
* An extra string to tack onto the end.
|
|
* @return A human-readable string representing the int.
|
|
*
|
|
* Note: building an array of chars and converting that to a string with
|
|
* Array.join at the end is more memory efficient than using string
|
|
* concatenation. See bug 722972 for details.
|
|
*/
|
|
function formatInt(aN, aExtra)
|
|
{
|
|
let neg = false;
|
|
if (hasNegativeSign(aN)) {
|
|
neg = true;
|
|
aN = -aN;
|
|
}
|
|
let s = [];
|
|
while (true) {
|
|
let k = aN % 1000;
|
|
aN = Math.floor(aN / 1000);
|
|
if (aN > 0) {
|
|
if (k < 10) {
|
|
s.unshift(",00", k);
|
|
} else if (k < 100) {
|
|
s.unshift(",0", k);
|
|
} else {
|
|
s.unshift(",", k);
|
|
}
|
|
} else {
|
|
s.unshift(k);
|
|
break;
|
|
}
|
|
}
|
|
if (neg) {
|
|
s.unshift("-");
|
|
}
|
|
if (aExtra) {
|
|
s.push(aExtra);
|
|
}
|
|
return s.join("");
|
|
}
|
|
|
|
/**
|
|
* Converts a byte count to an appropriate string representation.
|
|
*
|
|
* @param aBytes
|
|
* The byte count.
|
|
* @return The string representation.
|
|
*/
|
|
function formatBytes(aBytes)
|
|
{
|
|
let unit = gVerbose.checked ? " B" : " MB";
|
|
|
|
let s;
|
|
if (gVerbose.checked) {
|
|
s = formatInt(aBytes, unit);
|
|
} else {
|
|
let mbytes = (aBytes / (1024 * 1024)).toFixed(2);
|
|
let a = String(mbytes).split(".");
|
|
// If the argument to formatInt() is -0, it will print the negative sign.
|
|
s = formatInt(Number(a[0])) + "." + a[1] + unit;
|
|
}
|
|
return s;
|
|
}
|
|
|
|
/**
|
|
* Converts a percentage to an appropriate string representation.
|
|
*
|
|
* @param aPerc100x
|
|
* The percentage, multiplied by 100 (see nsIMemoryReporter).
|
|
* @return The string representation
|
|
*/
|
|
function formatPercentage(aPerc100x)
|
|
{
|
|
return (aPerc100x / 100).toFixed(2) + "%";
|
|
}
|
|
|
|
/**
|
|
* Right-justifies a string in a field of a given width, padding as necessary.
|
|
*
|
|
* @param aS
|
|
* The string.
|
|
* @param aN
|
|
* The field width.
|
|
* @param aC
|
|
* The char used to pad.
|
|
* @return The string representation.
|
|
*/
|
|
function pad(aS, aN, aC)
|
|
{
|
|
let padding = "";
|
|
let n2 = aN - aS.length;
|
|
for (let i = 0; i < n2; i++) {
|
|
padding += aC;
|
|
}
|
|
return padding + aS;
|
|
}
|
|
|
|
// There's a subset of the Unicode "light" box-drawing chars that is widely
|
|
// implemented in terminals, and this code sticks to that subset to maximize
|
|
// the chance that copying and pasting about:memory output to a terminal will
|
|
// work correctly.
|
|
/*
|
|
const kHorizontal = "\u2500",
|
|
kVertical = "\u2502",
|
|
kUpAndRight = "\u2514",
|
|
kUpAndRight_Right_Right = "\u2514\u2500\u2500",
|
|
kVerticalAndRight = "\u251c",
|
|
kVerticalAndRight_Right_Right = "\u251c\u2500\u2500",
|
|
kVertical_Space_Space = "\u2502 ";
|
|
|
|
const kNoKidsSep = " \u2500\u2500 ",
|
|
*/
|
|
// It doesn't. 10.4Fx issue 121.
|
|
const kHorizontal = "-",
|
|
kVertical = "|",
|
|
kUpAndRight = "+",
|
|
kUpAndRight_Right_Right = "+--",
|
|
kVerticalAndRight = "+",
|
|
kVerticalAndRight_Right_Right = "+--",
|
|
kVertical_Space_Space = "| ";
|
|
|
|
const kNoKidsSep = " -- ",
|
|
kHideKidsSep = " ++ ",
|
|
kShowKidsSep = " -- ";
|
|
|
|
function appendMrNameSpan(aP, aDescription, aUnsafeName, aIsInvalid, aNMerged,
|
|
aPresence)
|
|
{
|
|
let safeName = flipBackslashes(aUnsafeName);
|
|
if (!aIsInvalid && !aNMerged && !aPresence) {
|
|
safeName += "\n";
|
|
}
|
|
let nameSpan = appendElementWithText(aP, "span", "mrName", safeName);
|
|
nameSpan.title = aDescription;
|
|
|
|
if (aIsInvalid) {
|
|
let noteText = " [?!]";
|
|
if (!aNMerged) {
|
|
noteText += "\n";
|
|
}
|
|
let noteSpan = appendElementWithText(aP, "span", "mrNote", noteText);
|
|
noteSpan.title =
|
|
"Warning: this value is invalid and indicates a bug in one or more " +
|
|
"memory reporters. ";
|
|
}
|
|
|
|
if (aNMerged) {
|
|
let noteText = " [" + aNMerged + "]";
|
|
if (!aPresence) {
|
|
noteText += "\n";
|
|
}
|
|
let noteSpan = appendElementWithText(aP, "span", "mrNote", noteText);
|
|
noteSpan.title =
|
|
"This value is the sum of " + aNMerged +
|
|
" memory reports that all have the same path.";
|
|
}
|
|
|
|
if (aPresence) {
|
|
let c, title;
|
|
switch (aPresence) {
|
|
case DReport.PRESENT_IN_FIRST_ONLY:
|
|
c = '-';
|
|
title = "This value was only present in the first set of memory reports.";
|
|
break;
|
|
case DReport.PRESENT_IN_SECOND_ONLY:
|
|
c = '+';
|
|
title = "This value was only present in the second set of memory reports.";
|
|
break;
|
|
case DReport.ADDED_FOR_BALANCE:
|
|
c = '!';
|
|
title = "One of the sets of memory reports lacked children for this " +
|
|
"node's parent. This is a fake child node added to make the " +
|
|
"two memory sets comparable.";
|
|
break;
|
|
default: assert(false, "bad presence");
|
|
break;
|
|
}
|
|
let noteSpan = appendElementWithText(aP, "span", "mrNote",
|
|
" [" + c + "]\n");
|
|
noteSpan.title = title;
|
|
}
|
|
}
|
|
|
|
// This is used to record the (safe) IDs of which sub-trees have been manually
|
|
// expanded (marked as true) and collapsed (marked as false). It's used to
|
|
// replicate the collapsed/expanded state when the page is updated. It can end
|
|
// up holding IDs of nodes that no longer exist, e.g. for compartments that
|
|
// have been closed. This doesn't seem like a big deal, because the number is
|
|
// limited by the number of entries the user has changed from their original
|
|
// state.
|
|
var gShowSubtreesBySafeTreeId = {};
|
|
|
|
function assertClassListContains(e, className) {
|
|
assert(e, "undefined " + className);
|
|
assert(e.classList.contains(className), "classname isn't " + className);
|
|
}
|
|
|
|
function toggle(aEvent)
|
|
{
|
|
// This relies on each line being a span that contains at least four spans:
|
|
// mrValue, mrPerc, mrSep, mrName, and then zero or more mrNotes. All
|
|
// whitespace must be within one of these spans for this function to find the
|
|
// right nodes. And the span containing the children of this line must
|
|
// immediately follow. Assertions check this.
|
|
|
|
// |aEvent.target| will be one of the spans. Get the outer span.
|
|
let outerSpan = aEvent.target.parentNode;
|
|
assertClassListContains(outerSpan, "hasKids");
|
|
|
|
// Toggle the '++'/'--' separator.
|
|
let isExpansion;
|
|
let sepSpan = outerSpan.childNodes[2];
|
|
assertClassListContains(sepSpan, "mrSep");
|
|
if (sepSpan.textContent === kHideKidsSep) {
|
|
isExpansion = true;
|
|
sepSpan.textContent = kShowKidsSep;
|
|
} else if (sepSpan.textContent === kShowKidsSep) {
|
|
isExpansion = false;
|
|
sepSpan.textContent = kHideKidsSep;
|
|
} else {
|
|
assert(false, "bad sepSpan textContent");
|
|
}
|
|
|
|
// Toggle visibility of the span containing this node's children.
|
|
let subTreeSpan = outerSpan.nextSibling;
|
|
assertClassListContains(subTreeSpan, "kids");
|
|
subTreeSpan.classList.toggle("hidden");
|
|
|
|
// Record/unrecord that this sub-tree was toggled.
|
|
let safeTreeId = outerSpan.id;
|
|
if (gShowSubtreesBySafeTreeId[safeTreeId] !== undefined) {
|
|
delete gShowSubtreesBySafeTreeId[safeTreeId];
|
|
} else {
|
|
gShowSubtreesBySafeTreeId[safeTreeId] = isExpansion;
|
|
}
|
|
}
|
|
|
|
function expandPathToThisElement(aElement)
|
|
{
|
|
if (aElement.classList.contains("kids")) {
|
|
// Unhide the kids.
|
|
aElement.classList.remove("hidden");
|
|
expandPathToThisElement(aElement.previousSibling); // hasKids
|
|
|
|
} else if (aElement.classList.contains("hasKids")) {
|
|
// Change the separator to '--'.
|
|
let sepSpan = aElement.childNodes[2];
|
|
assertClassListContains(sepSpan, "mrSep");
|
|
sepSpan.textContent = kShowKidsSep;
|
|
expandPathToThisElement(aElement.parentNode); // kids or pre.entries
|
|
|
|
} else {
|
|
assertClassListContains(aElement, "entries");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Appends the elements for the tree, including its heading.
|
|
*
|
|
* @param aP
|
|
* The parent DOM node.
|
|
* @param aRoot
|
|
* The tree root.
|
|
* @param aProcess
|
|
* The process the tree corresponds to.
|
|
* @param aPadText
|
|
* A string to pad the start of each entry.
|
|
*/
|
|
function appendTreeElements(aP, aRoot, aProcess, aPadText)
|
|
{
|
|
/**
|
|
* Appends the elements for a particular tree, without a heading.
|
|
*
|
|
* @param aP
|
|
* The parent DOM node.
|
|
* @param aProcess
|
|
* The process the tree corresponds to.
|
|
* @param aUnsafeNames
|
|
* An array of the names forming the path to aT.
|
|
* @param aRoot
|
|
* The root of the tree this sub-tree belongs to.
|
|
* @param aT
|
|
* The tree.
|
|
* @param aTreelineText1
|
|
* The first part of the treeline for this entry and this entry's
|
|
* children.
|
|
* @param aTreelineText2a
|
|
* The second part of the treeline for this entry.
|
|
* @param aTreelineText2b
|
|
* The second part of the treeline for this entry's children.
|
|
* @param aParentStringLength
|
|
* The length of the formatted byte count of the top node in the tree.
|
|
*/
|
|
function appendTreeElements2(aP, aProcess, aUnsafeNames, aRoot, aT,
|
|
aTreelineText1, aTreelineText2a,
|
|
aTreelineText2b, aParentStringLength)
|
|
{
|
|
function appendN(aS, aC, aN)
|
|
{
|
|
for (let i = 0; i < aN; i++) {
|
|
aS += aC;
|
|
}
|
|
return aS;
|
|
}
|
|
|
|
// The tree line. Indent more if this entry is narrower than its parent.
|
|
let valueText = aT.toString();
|
|
let extraTreelineLength =
|
|
Math.max(aParentStringLength - valueText.length, 0);
|
|
if (extraTreelineLength > 0) {
|
|
aTreelineText2a =
|
|
appendN(aTreelineText2a, kHorizontal, extraTreelineLength);
|
|
aTreelineText2b =
|
|
appendN(aTreelineText2b, " ", extraTreelineLength);
|
|
}
|
|
let treelineText = aTreelineText1 + aTreelineText2a;
|
|
appendElementWithText(aP, "span", "treeline", treelineText);
|
|
|
|
// Detect and record invalid values. But not if gIsDiff is true, because
|
|
// we expect negative values in that case.
|
|
assertInput(aRoot._units === aT._units,
|
|
"units within a tree are inconsistent");
|
|
let tIsInvalid = false;
|
|
if (!gIsDiff && !(0 <= aT._amount && aT._amount <= aRoot._amount)) {
|
|
tIsInvalid = true;
|
|
let unsafePath = aUnsafeNames.join("/");
|
|
gUnsafePathsWithInvalidValuesForThisProcess.push(unsafePath);
|
|
reportAssertionFailure("Invalid value (" + aT._amount + " / " +
|
|
aRoot._amount + ") for " +
|
|
flipBackslashes(unsafePath));
|
|
}
|
|
|
|
// For non-leaf nodes, the entire sub-tree is put within a span so it can
|
|
// be collapsed if the node is clicked on.
|
|
let d;
|
|
let sep;
|
|
let showSubtrees;
|
|
if (aT._kids) {
|
|
// Determine if we should show the sub-tree below this entry; this
|
|
// involves reinstating any previous toggling of the sub-tree.
|
|
let unsafePath = aUnsafeNames.join("/");
|
|
let safeTreeId = aProcess + ":" + flipBackslashes(unsafePath);
|
|
showSubtrees = !aT._hideKids;
|
|
if (gShowSubtreesBySafeTreeId[safeTreeId] !== undefined) {
|
|
showSubtrees = gShowSubtreesBySafeTreeId[safeTreeId];
|
|
}
|
|
d = appendElement(aP, "span", "hasKids");
|
|
d.id = safeTreeId;
|
|
d.onclick = toggle;
|
|
sep = showSubtrees ? kShowKidsSep : kHideKidsSep;
|
|
} else {
|
|
assert(!aT._hideKids, "leaf node with _hideKids set")
|
|
sep = kNoKidsSep;
|
|
d = aP;
|
|
}
|
|
|
|
// The value.
|
|
appendElementWithText(d, "span", "mrValue" + (tIsInvalid ? " invalid" : ""),
|
|
valueText);
|
|
|
|
// The percentage (omitted for single entries).
|
|
let percText;
|
|
if (!aT._isDegenerate) {
|
|
// Treat 0 / 0 as 100%.
|
|
let num = aRoot._amount === 0 ? 100 : (100 * aT._amount / aRoot._amount);
|
|
let numText = num.toFixed(2);
|
|
percText = numText === "100.00"
|
|
? " (100.0%)"
|
|
: (0 <= num && num < 10 ? " (0" : " (") + numText + "%)";
|
|
appendElementWithText(d, "span", "mrPerc", percText);
|
|
}
|
|
|
|
// The separator.
|
|
appendElementWithText(d, "span", "mrSep", sep);
|
|
|
|
// The entry's name.
|
|
appendMrNameSpan(d, aT._description, aT._unsafeName,
|
|
tIsInvalid, aT._nMerged, aT._presence);
|
|
|
|
// In non-verbose mode, invalid nodes can be hidden in collapsed sub-trees.
|
|
// But it's good to always see them, so force this.
|
|
if (!gVerbose.checked && tIsInvalid) {
|
|
expandPathToThisElement(d);
|
|
}
|
|
|
|
// Recurse over children.
|
|
if (aT._kids) {
|
|
// The 'kids' class is just used for sanity checking in toggle().
|
|
d = appendElement(aP, "span", showSubtrees ? "kids" : "kids hidden");
|
|
|
|
let kidTreelineText1 = aTreelineText1 + aTreelineText2b;
|
|
for (let i = 0; i < aT._kids.length; i++) {
|
|
let kidTreelineText2a, kidTreelineText2b;
|
|
if (i < aT._kids.length - 1) {
|
|
kidTreelineText2a = kVerticalAndRight_Right_Right;
|
|
kidTreelineText2b = kVertical_Space_Space;
|
|
} else {
|
|
kidTreelineText2a = kUpAndRight_Right_Right;
|
|
kidTreelineText2b = " ";
|
|
}
|
|
aUnsafeNames.push(aT._kids[i]._unsafeName);
|
|
appendTreeElements2(d, aProcess, aUnsafeNames, aRoot, aT._kids[i],
|
|
kidTreelineText1, kidTreelineText2a,
|
|
kidTreelineText2b, valueText.length);
|
|
aUnsafeNames.pop();
|
|
}
|
|
}
|
|
}
|
|
|
|
let rootStringLength = aRoot.toString().length;
|
|
appendTreeElements2(aP, aProcess, [aRoot._unsafeName], aRoot, aRoot,
|
|
aPadText, "", "", rootStringLength);
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
function appendSectionHeader(aP, aText)
|
|
{
|
|
appendElementWithText(aP, "h2", "", aText + "\n");
|
|
return appendElement(aP, "pre", "entries");
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
function saveReportsToFile()
|
|
{
|
|
let fp = Cc["@mozilla.org/filepicker;1"].createInstance(Ci.nsIFilePicker);
|
|
fp.appendFilter("Zipped JSON files", "*.json.gz");
|
|
fp.appendFilters(Ci.nsIFilePicker.filterAll);
|
|
fp.filterIndex = 0;
|
|
fp.addToRecentDocs = true;
|
|
fp.defaultString = "memory-report.json.gz";
|
|
|
|
let fpFinish = function(file) {
|
|
let dumper = Cc["@mozilla.org/memory-info-dumper;1"]
|
|
.getService(Ci.nsIMemoryInfoDumper);
|
|
let finishDumping = () => {
|
|
updateMainAndFooter("Saved memory reports to " + file.path, HIDE_FOOTER);
|
|
}
|
|
dumper.dumpMemoryReportsToNamedFile(file.path, finishDumping, null,
|
|
gAnonymize.checked);
|
|
}
|
|
|
|
let fpCallback = function(aResult) {
|
|
if (aResult == Ci.nsIFilePicker.returnOK ||
|
|
aResult == Ci.nsIFilePicker.returnReplace) {
|
|
fpFinish(fp.file);
|
|
}
|
|
};
|
|
|
|
try {
|
|
fp.init(window, "Save Memory Reports", Ci.nsIFilePicker.modeSave);
|
|
} catch(ex) {
|
|
// This will fail on Android, since there is no Save as file picker there.
|
|
// Just save to the default downloads dir if it does.
|
|
let file = Services.dirsvc.get("DfltDwnld", Ci.nsIFile);
|
|
file.append(fp.defaultString);
|
|
fpFinish(file);
|
|
return;
|
|
}
|
|
fp.open(fpCallback);
|
|
}
|