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ara-mdk / platform / external / chromium-trace / b4fa51e79280d8da43825ac47737b38cdcf9b6bf / . / script.js
blob: 993791c60735ccc96215f4cf5ea00f944915d9c6 [file] [log] [blame]
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
const cr = (function() {
/**
* Whether we are using a Mac or not.
* @type {boolean}
*/
const isMac = /Mac/.test(navigator.platform);
/**
* Whether this is on the Windows platform or not.
* @type {boolean}
*/
const isWindows = /Win/.test(navigator.platform);
/**
* Whether this is on chromeOS or not.
* @type {boolean}
*/
const isChromeOS = /CrOS/.test(navigator.userAgent);
/**
* Whether this is on vanilla Linux (not chromeOS).
* @type {boolean}
*/
const isLinux = /Linux/.test(navigator.userAgent);
/**
* Whether this uses GTK or not.
* @type {boolean}
*/
const isGTK = /GTK/.test(chrome.toolkit);
/**
* Whether this uses the views toolkit or not.
* @type {boolean}
*/
const isViews = /views/.test(chrome.toolkit);
/**
* Whether this window is optimized for touch-based input.
* @type {boolean}
*/
const isTouchOptimized = !!chrome.touchOptimized;
/**
* Sets the os and toolkit attributes in the <html> element so that platform
* specific css rules can be applied.
*/
function enablePlatformSpecificCSSRules() {
if (isMac)
doc.documentElement.setAttribute('os', 'mac');
if (isWindows)
doc.documentElement.setAttribute('os', 'windows');
if (isChromeOS)
doc.documentElement.setAttribute('os', 'chromeos');
if (isLinux)
doc.documentElement.setAttribute('os', 'linux');
if (isGTK)
doc.documentElement.setAttribute('toolkit', 'gtk');
if (isViews)
doc.documentElement.setAttribute('toolkit', 'views');
if (isTouchOptimized)
doc.documentElement.setAttribute('touch-optimized', '');
}
/**
* Builds an object structure for the provided namespace path,
* ensuring that names that already exist are not overwritten. For
* example:
* "a.b.c" -> a = {};a.b={};a.b.c={};
* @param {string} name Name of the object that this file defines.
* @param {*=} opt_object The object to expose at the end of the path.
* @param {Object=} opt_objectToExportTo The object to add the path to;
* default is {@code window}.
* @private
*/
function exportPath(name, opt_object, opt_objectToExportTo) {
var parts = name.split('.');
var cur = opt_objectToExportTo || window /* global */;
for (var part; parts.length && (part = parts.shift());) {
if (!parts.length && opt_object !== undefined) {
// last part and we have an object; use it
cur[part] = opt_object;
} else if (part in cur) {
cur = cur[part];
} else {
cur = cur[part] = {};
}
}
return cur;
};
// cr.Event is called CrEvent in here to prevent naming conflicts. We also
// store the original Event in case someone does a global alias of cr.Event.
const DomEvent = Event;
/**
* Creates a new event to be used with cr.EventTarget or DOM EventTarget
* objects.
* @param {string} type The name of the event.
* @param {boolean=} opt_bubbles Whether the event bubbles. Default is false.
* @param {boolean=} opt_preventable Whether the default action of the event
* can be prevented.
* @constructor
* @extends {DomEvent}
*/
function CrEvent(type, opt_bubbles, opt_preventable) {
var e = cr.doc.createEvent('Event');
e.initEvent(type, !!opt_bubbles, !!opt_preventable);
e.__proto__ = CrEvent.prototype;
return e;
}
CrEvent.prototype = {
__proto__: DomEvent.prototype
};
/**
* Fires a property change event on the target.
* @param {EventTarget} target The target to dispatch the event on.
* @param {string} propertyName The name of the property that changed.
* @param {*} newValue The new value for the property.
* @param {*} oldValue The old value for the property.
*/
function dispatchPropertyChange(target, propertyName, newValue, oldValue) {
var e = new CrEvent(propertyName + 'Change');
e.propertyName = propertyName;
e.newValue = newValue;
e.oldValue = oldValue;
target.dispatchEvent(e);
}
/**
* Converts a camelCase javascript property name to a hyphenated-lower-case
* attribute name.
* @param {string} jsName The javascript camelCase property name.
* @return {string} The equivalent hyphenated-lower-case attribute name.
*/
function getAttributeName(jsName) {
return jsName.replace(/([A-Z])/g, '-$1').toLowerCase();
}
/**
* The kind of property to define in {@code defineProperty}.
* @enum {number}
*/
const PropertyKind = {
/**
* Plain old JS property where the backing data is stored as a "private"
* field on the object.
*/
JS: 'js',
/**
* The property backing data is stored as an attribute on an element.
*/
ATTR: 'attr',
/**
* The property backing data is stored as an attribute on an element. If the
* element has the attribute then the value is true.
*/
BOOL_ATTR: 'boolAttr'
};
/**
* Helper function for defineProperty that returns the getter to use for the
* property.
* @param {string} name
* @param {cr.PropertyKind} kind
* @return {function():*} The getter for the property.
*/
function getGetter(name, kind) {
switch (kind) {
case PropertyKind.JS:
var privateName = name + '_';
return function() {
return this[privateName];
};
case PropertyKind.ATTR:
var attributeName = getAttributeName(name);
return function() {
return this.getAttribute(attributeName);
};
case PropertyKind.BOOL_ATTR:
var attributeName = getAttributeName(name);
return function() {
return this.hasAttribute(attributeName);
};
}
}
/**
* Helper function for defineProperty that returns the setter of the right
* kind.
* @param {string} name The name of the property we are defining the setter
* for.
* @param {cr.PropertyKind} kind The kind of property we are getting the
* setter for.
* @param {function(*):void} opt_setHook A function to run after the property
* is set, but before the propertyChange event is fired.
* @return {function(*):void} The function to use as a setter.
*/
function getSetter(name, kind, opt_setHook) {
switch (kind) {
case PropertyKind.JS:
var privateName = name + '_';
return function(value) {
var oldValue = this[privateName];
if (value !== oldValue) {
this[privateName] = value;
if (opt_setHook)
opt_setHook.call(this, value, oldValue);
dispatchPropertyChange(this, name, value, oldValue);
}
};
case PropertyKind.ATTR:
var attributeName = getAttributeName(name);
return function(value) {
var oldValue = this[attributeName];
if (value !== oldValue) {
if (value == undefined)
this.removeAttribute(attributeName);
else
this.setAttribute(attributeName, value);
if (opt_setHook)
opt_setHook.call(this, value, oldValue);
dispatchPropertyChange(this, name, value, oldValue);
}
};
case PropertyKind.BOOL_ATTR:
var attributeName = getAttributeName(name);
return function(value) {
var oldValue = this[attributeName];
if (value !== oldValue) {
if (value)
this.setAttribute(attributeName, name);
else
this.removeAttribute(attributeName);
if (opt_setHook)
opt_setHook.call(this, value, oldValue);
dispatchPropertyChange(this, name, value, oldValue);
}
};
}
}
/**
* Defines a property on an object. When the setter changes the value a
* property change event with the type {@code name + 'Change'} is fired.
* @param {!Object} obj The object to define the property for.
* @param {string} name The name of the property.
* @param {cr.PropertyKind=} opt_kind What kind of underlying storage to use.
* @param {function(*):void} opt_setHook A function to run after the
* property is set, but before the propertyChange event is fired.
*/
function defineProperty(obj, name, opt_kind, opt_setHook) {
if (typeof obj == 'function')
obj = obj.prototype;
var kind = opt_kind || PropertyKind.JS;
if (!obj.__lookupGetter__(name)) {
obj.__defineGetter__(name, getGetter(name, kind));
}
if (!obj.__lookupSetter__(name)) {
obj.__defineSetter__(name, getSetter(name, kind, opt_setHook));
}
}
/**
* Counter for use with createUid
*/
var uidCounter = 1;
/**
* @return {number} A new unique ID.
*/
function createUid() {
return uidCounter++;
}
/**
* Returns a unique ID for the item. This mutates the item so it needs to be
* an object
* @param {!Object} item The item to get the unique ID for.
* @return {number} The unique ID for the item.
*/
function getUid(item) {
if (item.hasOwnProperty('uid'))
return item.uid;
return item.uid = createUid();
}
/**
* Dispatches a simple event on an event target.
* @param {!EventTarget} target The event target to dispatch the event on.
* @param {string} type The type of the event.
* @param {boolean=} opt_bubbles Whether the event bubbles or not.
* @param {boolean=} opt_cancelable Whether the default action of the event
* can be prevented.
* @return {boolean} If any of the listeners called {@code preventDefault}
* during the dispatch this will return false.
*/
function dispatchSimpleEvent(target, type, opt_bubbles, opt_cancelable) {
var e = new cr.Event(type, opt_bubbles, opt_cancelable);
return target.dispatchEvent(e);
}
/**
* @param {string} name
* @param {!Function} fun
*/
function define(name, fun) {
var obj = exportPath(name);
var exports = fun();
for (var propertyName in exports) {
// Maybe we should check the prototype chain here? The current usage
// pattern is always using an object literal so we only care about own
// properties.
var propertyDescriptor = Object.getOwnPropertyDescriptor(exports,
propertyName);
if (propertyDescriptor)
Object.defineProperty(obj, propertyName, propertyDescriptor);
}
}
/**
* Document used for various document related operations.
* @type {!Document}
*/
var doc = document;
/**
* Allows you to run func in the context of a different document.
* @param {!Document} document The document to use.
* @param {function():*} func The function to call.
*/
function withDoc(document, func) {
var oldDoc = doc;
doc = document;
try {
func();
} finally {
doc = oldDoc;
}
}
/**
* Adds a {@code getInstance} static method that always return the same
* instance object.
* @param {!Function} ctor The constructor for the class to add the static
* method to.
*/
function addSingletonGetter(ctor) {
ctor.getInstance = function() {
return ctor.instance_ || (ctor.instance_ = new ctor());
};
}
return {
addSingletonGetter: addSingletonGetter,
isChromeOS: isChromeOS,
isMac: isMac,
isWindows: isWindows,
isLinux: isLinux,
isViews: isViews,
isTouchOptimized: isTouchOptimized,
enablePlatformSpecificCSSRules: enablePlatformSpecificCSSRules,
define: define,
defineProperty: defineProperty,
PropertyKind: PropertyKind,
createUid: createUid,
getUid: getUid,
dispatchSimpleEvent: dispatchSimpleEvent,
dispatchPropertyChange: dispatchPropertyChange,
/**
* The document that we are currently using.
* @type {!Document}
*/
get doc() {
return doc;
},
withDoc: withDoc,
Event: CrEvent
};
})();
// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/**
* @fileoverview This contains an implementation of the EventTarget interface
* as defined by DOM Level 2 Events.
*/
cr.define('cr', function() {
/**
* Creates a new EventTarget. This class implements the DOM level 2
* EventTarget interface and can be used wherever those are used.
* @constructor
*/
function EventTarget() {
}
EventTarget.prototype = {
/**
* Adds an event listener to the target.
* @param {string} type The name of the event.
* @param {!Function|{handleEvent:Function}} handler The handler for the
* event. This is called when the event is dispatched.
*/
addEventListener: function(type, handler) {
if (!this.listeners_)
this.listeners_ = Object.create(null);
if (!(type in this.listeners_)) {
this.listeners_[type] = [handler];
} else {
var handlers = this.listeners_[type];
if (handlers.indexOf(handler) < 0)
handlers.push(handler);
}
},
/**
* Removes an event listener from the target.
* @param {string} type The name of the event.
* @param {!Function|{handleEvent:Function}} handler The handler for the
* event.
*/
removeEventListener: function(type, handler) {
if (!this.listeners_)
return;
if (type in this.listeners_) {
var handlers = this.listeners_[type];
var index = handlers.indexOf(handler);
if (index >= 0) {
// Clean up if this was the last listener.
if (handlers.length == 1)
delete this.listeners_[type];
else
handlers.splice(index, 1);
}
}
},
/**
* Dispatches an event and calls all the listeners that are listening to
* the type of the event.
* @param {!cr.event.Event} event The event to dispatch.
* @return {boolean} Whether the default action was prevented. If someone
* calls preventDefault on the event object then this returns false.
*/
dispatchEvent: function(event) {
if (!this.listeners_)
return true;
// Since we are using DOM Event objects we need to override some of the
// properties and methods so that we can emulate this correctly.
var self = this;
event.__defineGetter__('target', function() {
return self;
});
event.preventDefault = function() {
this.returnValue = false;
};
var type = event.type;
var prevented = 0;
if (type in this.listeners_) {
// Clone to prevent removal during dispatch
var handlers = this.listeners_[type].concat();
for (var i = 0, handler; handler = handlers[i]; i++) {
if (handler.handleEvent)
prevented |= handler.handleEvent.call(handler, event) === false;
else
prevented |= handler.call(this, event) === false;
}
}
return !prevented && event.returnValue;
}
};
// Export
return {
EventTarget: EventTarget
};
});
// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
cr.define('cr.ui', function() {
/**
* Decorates elements as an instance of a class.
* @param {string|!Element} source The way to find the element(s) to decorate.
* If this is a string then {@code querySeletorAll} is used to find the
* elements to decorate.
* @param {!Function} constr The constructor to decorate with. The constr
* needs to have a {@code decorate} function.
*/
function decorate(source, constr) {
var elements;
if (typeof source == 'string')
elements = cr.doc.querySelectorAll(source);
else
elements = [source];
for (var i = 0, el; el = elements[i]; i++) {
if (!(el instanceof constr))
constr.decorate(el);
}
}
/**
* Helper function for creating new element for define.
*/
function createElementHelper(tagName, opt_bag) {
// Allow passing in ownerDocument to create in a different document.
var doc;
if (opt_bag && opt_bag.ownerDocument)
doc = opt_bag.ownerDocument;
else
doc = cr.doc;
return doc.createElement(tagName);
}
/**
* Creates the constructor for a UI element class.
*
* Usage:
* <pre>
* var List = cr.ui.define('list');
* List.prototype = {
* __proto__: HTMLUListElement.prototype,
* decorate: function() {
* ...
* },
* ...
* };
* </pre>
*
* @param {string|Function} tagNameOrFunction The tagName or
* function to use for newly created elements. If this is a function it
* needs to return a new element when called.
* @return {function(Object=):Element} The constructor function which takes
* an optional property bag. The function also has a static
* {@code decorate} method added to it.
*/
function define(tagNameOrFunction) {
var createFunction, tagName;
if (typeof tagNameOrFunction == 'function') {
createFunction = tagNameOrFunction;
tagName = '';
} else {
createFunction = createElementHelper;
tagName = tagNameOrFunction;
}
/**
* Creates a new UI element constructor.
* @param {Object=} opt_propertyBag Optional bag of properties to set on the
* object after created. The property {@code ownerDocument} is special
* cased and it allows you to create the element in a different
* document than the default.
* @constructor
*/
function f(opt_propertyBag) {
var el = createFunction(tagName, opt_propertyBag);
f.decorate(el);
for (var propertyName in opt_propertyBag) {
el[propertyName] = opt_propertyBag[propertyName];
}
return el;
}
/**
* Decorates an element as a UI element class.
* @param {!Element} el The element to decorate.
*/
f.decorate = function(el) {
el.__proto__ = f.prototype;
el.decorate();
};
return f;
}
/**
* Input elements do not grow and shrink with their content. This is a simple
* (and not very efficient) way of handling shrinking to content with support
* for min width and limited by the width of the parent element.
* @param {HTMLElement} el The element to limit the width for.
* @param {number} parentEl The parent element that should limit the size.
* @param {number} min The minimum width.
*/
function limitInputWidth(el, parentEl, min) {
// Needs a size larger than borders
el.style.width = '10px';
var doc = el.ownerDocument;
var win = doc.defaultView;
var computedStyle = win.getComputedStyle(el);
var parentComputedStyle = win.getComputedStyle(parentEl);
var rtl = computedStyle.direction == 'rtl';
// To get the max width we get the width of the treeItem minus the position
// of the input.
var inputRect = el.getBoundingClientRect(); // box-sizing
var parentRect = parentEl.getBoundingClientRect();
var startPos = rtl ? parentRect.right - inputRect.right :
inputRect.left - parentRect.left;
// Add up border and padding of the input.
var inner = parseInt(computedStyle.borderLeftWidth, 10) +
parseInt(computedStyle.paddingLeft, 10) +
parseInt(computedStyle.paddingRight, 10) +
parseInt(computedStyle.borderRightWidth, 10);
// We also need to subtract the padding of parent to prevent it to overflow.
var parentPadding = rtl ? parseInt(parentComputedStyle.paddingLeft, 10) :
parseInt(parentComputedStyle.paddingRight, 10);
var max = parentEl.clientWidth - startPos - inner - parentPadding;
function limit() {
if (el.scrollWidth > max) {
el.style.width = max + 'px';
} else {
el.style.width = 0;
var sw = el.scrollWidth;
if (sw < min) {
el.style.width = min + 'px';
} else {
el.style.width = sw + 'px';
}
}
}
el.addEventListener('input', limit);
limit();
}
return {
decorate: decorate,
define: define,
limitInputWidth: limitInputWidth
};
});
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/**
* The global object.
* @type {!Object}
*/
const global = this;
/**
* Alias for document.getElementById.
* @param {string} id The ID of the element to find.
* @return {HTMLElement} The found element or null if not found.
*/
function $(id) {
return document.getElementById(id);
}
/**
* Calls chrome.send with a callback and restores the original afterwards.
* @param {string} name The name of the message to send.
* @param {!Array} params The parameters to send.
* @param {string} callbackName The name of the function that the backend calls.
* @param {!Function} The function to call.
*/
function chromeSend(name, params, callbackName, callback) {
var old = global[callbackName];
global[callbackName] = function() {
// restore
global[callbackName] = old;
var args = Array.prototype.slice.call(arguments);
return callback.apply(global, args);
};
chrome.send(name, params);
}
/**
* Generates a CSS url string.
* @param {string} s The URL to generate the CSS url for.
* @return {string} The CSS url string.
*/
function url(s) {
// http://www.w3.org/TR/css3-values/#uris
// Parentheses, commas, whitespace characters, single quotes (') and double
// quotes (") appearing in a URI must be escaped with a backslash
var s2 = s.replace(/(\(|\)|\,|\s|\'|\"|\\)/g, '\\$1');
// WebKit has a bug when it comes to URLs that end with \
// https://bugs.webkit.org/show_bug.cgi?id=28885
if (/\\\\$/.test(s2)) {
// Add a space to work around the WebKit bug.
s2 += ' ';
}
return 'url("' + s2 + '")';
}
/**
* Parses query parameters from Location.
* @param {string} s The URL to generate the CSS url for.
* @return {object} Dictionary containing name value pairs for URL
*/
function parseQueryParams(location) {
var params = {};
var query = unescape(location.search.substring(1));
var vars = query.split("&");
for (var i=0; i < vars.length; i++) {
var pair = vars[i].split("=");
params[pair[0]] = pair[1];
}
return params;
}
function findAncestorByClass(el, className) {
return findAncestor(el, function(el) {
if (el.classList)
return el.classList.contains(className);
return null;
});
}
/**
* Return the first ancestor for which the {@code predicate} returns true.
* @param {Node} node The node to check.
* @param {function(Node) : boolean} predicate The function that tests the
* nodes.
* @return {Node} The found ancestor or null if not found.
*/
function findAncestor(node, predicate) {
var last = false;
while (node != null && !(last = predicate(node))) {
node = node.parentNode;
}
return last ? node : null;
}
function swapDomNodes(a, b) {
var afterA = a.nextSibling;
if (afterA == b) {
swapDomNodes(b, a);
return;
}
var aParent = a.parentNode;
b.parentNode.replaceChild(a, b);
aParent.insertBefore(b, afterA);
}
/**
* Disables text selection and dragging.
*/
function disableTextSelectAndDrag() {
// Disable text selection.
document.onselectstart = function(e) {
e.preventDefault();
}
// Disable dragging.
document.ondragstart = function(e) {
e.preventDefault();
}
}
/**
* Check the directionality of the page.
* @return {boolean} True if Chrome is running an RTL UI.
*/
function isRTL() {
return document.documentElement.dir == 'rtl';
}
/**
* Simple common assertion API
* @param {*} condition The condition to test. Note that this may be used to
* test whether a value is defined or not, and we don't want to force a
* cast to Boolean.
* @param {string=} opt_message A message to use in any error.
*/
function assert(condition, opt_message) {
'use strict';
if (!condition) {
var msg = 'Assertion failed';
if (opt_message)
msg = msg + ': ' + opt_message;
throw new Error(msg);
}
}
/**
* Get an element that's known to exist by its ID. We use this instead of just
* calling getElementById and not checking the result because this lets us
* satisfy the JSCompiler type system.
* @param {string} id The identifier name.
* @return {!Element} the Element.
*/
function getRequiredElement(id) {
var element = $(id);
assert(element, 'Missing required element: ' + id);
return element;
}
// Handle click on a link. If the link points to a chrome: or file: url, then
// call into the browser to do the navigation.
document.addEventListener('click', function(e) {
// Allow preventDefault to work.
if (!e.returnValue)
return;
var el = e.target;
if (el.nodeType == Node.ELEMENT_NODE &&
el.webkitMatchesSelector('A, A *')) {
while (el.tagName != 'A') {
el = el.parentElement;
}
if ((el.protocol == 'file:' || el.protocol == 'about:') &&
(e.button == 0 || e.button == 1)) {
chrome.send('navigateToUrl', [
el.href,
el.target,
e.button,
e.altKey,
e.ctrlKey,
e.metaKey,
e.shiftKey
]);
e.preventDefault();
}
}
});
/**
* Creates a new URL which is the old URL with a GET param of key=value.
* @param {string} url The base URL. There is not sanity checking on the URL so
* it must be passed in a proper format.
* @param {string} key The key of the param.
* @param {string} value The value of the param.
* @return {string}
*/
function appendParam(url, key, value) {
var param = encodeURIComponent(key) + '=' + encodeURIComponent(value);
if (url.indexOf('?') == -1)
return url + '?' + param;
return url + '&' + param;
}
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/**
* @fileoverview TimelineModel is a parsed representation of the
* TraceEvents obtained from base/trace_event in which the begin-end
* tokens are converted into a hierarchy of processes, threads,
* subrows, and slices.
*
* The building block of the model is a slice. A slice is roughly
* equivalent to function call executing on a specific thread. As a
* result, slices may have one or more subslices.
*
* A thread contains one or more subrows of slices. Row 0 corresponds to
* the "root" slices, e.g. the topmost slices. Row 1 contains slices that
* are nested 1 deep in the stack, and so on. We use these subrows to draw
* nesting tasks.
*
*/
cr.define('tracing', function() {
/**
* A TimelineSlice represents an interval of time on a given resource plus
* parameters associated with that interval.
*
* A slice is typically associated with a specific trace event pair on a
* specific thread.
* For example,
* TRACE_EVENT_BEGIN1("x","myArg", 7) at time=0.1ms
* TRACE_EVENT_END() at time=0.3ms
* This results in a single timeline slice from 0.1 with duration 0.2 on a
* specific thread.
*
* A slice can also be an interval of time on a Cpu on a TimelineCpu.
*
* All time units are stored in milliseconds.
* @constructor
*/
function TimelineSlice(title, colorId, start, args, opt_duration) {
this.title = title;
this.start = start;
this.colorId = colorId;
this.args = args;
this.didNotFinish = false;
this.subSlices = [];
if (opt_duration !== undefined)
this.duration = opt_duration;
}
TimelineSlice.prototype = {
selected: false,
duration: undefined,
get end() {
return this.start + this.duration;
}
};
/**
* A TimelineThread stores all the trace events collected for a particular
* thread. We organize the slices on a thread by "subrows," where subrow 0
* has all the root slices, subrow 1 those nested 1 deep, and so on. There
* is also a set of non-nested subrows.
*
* @constructor
*/
function TimelineThread(parent, tid) {
this.parent = parent;
this.tid = tid;
this.subRows = [[]];
this.nonNestedSubRows = [];
}
TimelineThread.prototype = {
/**
* Name of the thread, if present.
*/
name: undefined,
getSubrow: function(i) {
while (i >= this.subRows.length)
this.subRows.push([]);
return this.subRows[i];
},
addNonNestedSlice: function(slice) {
for (var i = 0; i < this.nonNestedSubRows.length; i++) {
var currSubRow = this.nonNestedSubRows[i];
var lastSlice = currSubRow[currSubRow.length - 1];
if (slice.start >= lastSlice.start + lastSlice.duration) {
currSubRow.push(slice);
return;
}
}
this.nonNestedSubRows.push([slice]);
},
/**
* Updates the minTimestamp and maxTimestamp fields based on the
* current slices and nonNestedSubRows attached to the thread.
*/
updateBounds: function() {
var values = [];
var slices;
if (this.subRows[0].length != 0) {
slices = this.subRows[0];
values.push(slices[0].start);
values.push(slices[slices.length - 1].end);
}
for (var i = 0; i < this.nonNestedSubRows.length; ++i) {
slices = this.nonNestedSubRows[i];
values.push(slices[0].start);
values.push(slices[slices.length - 1].end);
}
if (values.length) {
this.minTimestamp = Math.min.apply(Math, values);
this.maxTimestamp = Math.max.apply(Math, values);
} else {
this.minTimestamp = undefined;
this.maxTimestamp = undefined;
}
},
/**
* @return {String} A user-friendly name for this thread.
*/
get userFriendlyName() {
var tname = this.name || this.tid;
return this.parent.pid + ': ' + tname;
},
/**
* @return {String} User friendly details about this thread.
*/
get userFriendlyDetials() {
return 'pid: ' + this.parent.pid +
', tid: ' + this.tid +
(this.name ? ', name: ' + this.name : '');
}
};
/**
* Comparison between threads that orders first by pid,
* then by names, then by tid.
*/
TimelineThread.compare = function(x, y) {
if (x.parent.pid != y.parent.pid) {
return TimelineProcess.compare(x.parent, y.parent.pid);
}
if (x.name && y.name) {
var tmp = x.name.localeCompare(y.name);
if (tmp == 0)
return x.tid - y.tid;
return tmp;
} else if (x.name) {
return -1;
} else if (y.name) {
return 1;
} else {
return x.tid - y.tid;
}
};
/**
* Stores all the samples for a given counter.
* @constructor
*/
function TimelineCounter(parent, id, name) {
this.parent = parent;
this.id = id;
this.name = name;
this.seriesNames = [];
this.seriesColors = [];
this.timestamps = [];
this.samples = [];
}
TimelineCounter.prototype = {
__proto__: Object.prototype,
get numSeries() {
return this.seriesNames.length;
},
get numSamples() {
return this.timestamps.length;
},
/**
* Updates the bounds for this counter based on the samples it contains.
*/
updateBounds: function() {
if (this.seriesNames.length != this.seriesColors.length)
throw 'seriesNames.length must match seriesColors.length';
if (this.numSeries * this.numSamples != this.samples.length)
throw 'samples.length must be a multiple of numSamples.';
this.totals = [];
if (this.samples.length == 0) {
this.minTimestamp = undefined;
this.maxTimestamp = undefined;
this.maxTotal = 0;
return;
}
this.minTimestamp = this.timestamps[0];
this.maxTimestamp = this.timestamps[this.timestamps.length - 1];
var numSeries = this.numSeries;
var maxTotal = -Infinity;
for (var i = 0; i < this.timestamps.length; i++) {
var total = 0;
for (var j = 0; j < numSeries; j++) {
total += this.samples[i * numSeries + j];
this.totals.push(total);
}
if (total > maxTotal)
maxTotal = total;
}
if (this.maxTotal === undefined) {
this.maxTotal = maxTotal;
}
}
};
/**
* Comparison between counters that orders by pid, then name.
*/
TimelineCounter.compare = function(x, y) {
if (x.parent.pid != y.parent.pid) {
return TimelineProcess.compare(x.parent, y.parent.pid);
}
var tmp = x.name.localeCompare(y.name);
if (tmp == 0)
return x.tid - y.tid;
return tmp;
};
/**
* The TimelineProcess represents a single process in the
* trace. Right now, we keep this around purely for bookkeeping
* reasons.
* @constructor
*/
function TimelineProcess(pid) {
this.pid = pid;
this.threads = {};
this.counters = {};
};
TimelineProcess.prototype = {
get numThreads() {
var n = 0;
for (var p in this.threads) {
n++;
}
return n;
},
/**
* @return {TimlineThread} The thread identified by tid on this process,
* creating it if it doesn't exist.
*/
getOrCreateThread: function(tid) {
if (!this.threads[tid])
this.threads[tid] = new TimelineThread(this, tid);
return this.threads[tid];
},
/**
* @return {TimlineCounter} The counter on this process named 'name',
* creating it if it doesn't exist.
*/
getOrCreateCounter: function(cat, name) {
var id = cat + '.' + name;
if (!this.counters[id])
this.counters[id] = new TimelineCounter(this, id, name);
return this.counters[id];
}
};
/**
* Comparison between processes that orders by pid.
*/
TimelineProcess.compare = function(x, y) {
return x.pid - y.pid;
};
/**
* The TimelineCpu represents a Cpu from the kernel's point of view.
* @constructor
*/
function TimelineCpu(number) {
this.cpuNumber = number;
this.slices = [];
this.counters = {};
};
TimelineCpu.prototype = {
/**
* @return {TimlineCounter} The counter on this process named 'name',
* creating it if it doesn't exist.
*/
getOrCreateCounter: function(cat, name) {
var id;
if (cat.length)
id = cat + '.' + name;
else
id = name;
if (!this.counters[id])
this.counters[id] = new TimelineCounter(this, id, name);
return this.counters[id];
},
/**
* Updates the minTimestamp and maxTimestamp fields based on the
* current slices attached to the cpu.
*/
updateBounds: function() {
var values = [];
if (this.slices.length) {
this.minTimestamp = this.slices[0].start;
this.maxTimestamp = this.slices[this.slices.length - 1].end;
} else {
this.minTimestamp = undefined;
this.maxTimestamp = undefined;
}
}
};
/**
* Comparison between processes that orders by cpuNumber.
*/
TimelineCpu.compare = function(x, y) {
return x.cpuNumber - y.cpuNumber;
};
// The color pallette is split in half, with the upper
// half of the pallette being the "highlighted" verison
// of the base color. So, color 7's highlighted form is
// 7 + (pallette.length / 2).
//
// These bright versions of colors are automatically generated
// from the base colors.
//
// Within the color pallette, there are "regular" colors,
// which can be used for random color selection, and
// reserved colors, which are used when specific colors
// need to be used, e.g. where red is desired.
const palletteBase = [
{r: 138, g: 113, b: 152},
{r: 175, g: 112, b: 133},
{r: 127, g: 135, b: 225},
{r: 93, g: 81, b: 137},
{r: 116, g: 143, b: 119},
{r: 178, g: 214, b: 122},
{r: 87, g: 109, b: 147},
{r: 119, g: 155, b: 95},
{r: 114, g: 180, b: 160},
{r: 132, g: 85, b: 103},
{r: 157, g: 210, b: 150},
{r: 148, g: 94, b: 86},
{r: 164, g: 108, b: 138},
{r: 139, g: 191, b: 150},
{r: 110, g: 99, b: 145},
{r: 80, g: 129, b: 109},
{r: 125, g: 140, b: 149},
{r: 93, g: 124, b: 132},
{r: 140, g: 85, b: 140},
{r: 104, g: 163, b: 162},
{r: 132, g: 141, b: 178},
{r: 131, g: 105, b: 147},
{r: 135, g: 183, b: 98},
{r: 152, g: 134, b: 177},
{r: 141, g: 188, b: 141},
{r: 133, g: 160, b: 210},
{r: 126, g: 186, b: 148},
{r: 112, g: 198, b: 205},
{r: 180, g: 122, b: 195},
{r: 203, g: 144, b: 152},
// Reserved Entires
{r: 182, g: 125, b: 143},
{r: 126, g: 200, b: 148},
{r: 133, g: 160, b: 210},
{r: 240, g: 240, b: 240}];
// Make sure this number tracks the number of reserved entries in the
// pallette.
const numReservedColorIds = 4;
function brighten(c) {
var k;
if (c.r >= 240 && c.g >= 240 && c.b >= 240)
k = -0.20;
else
k = 0.45;
return {r: Math.min(255, c.r + Math.floor(c.r * k)),
g: Math.min(255, c.g + Math.floor(c.g * k)),
b: Math.min(255, c.b + Math.floor(c.b * k))};
}
function colorToString(c) {
return 'rgb(' + c.r + ',' + c.g + ',' + c.b + ')';
}
/**
* The number of color IDs that getStringColorId can choose from.
*/
const numRegularColorIds = palletteBase.length - numReservedColorIds;
const highlightIdBoost = palletteBase.length;
const pallette = palletteBase.concat(palletteBase.map(brighten)).
map(colorToString);
/**
* Computes a simplistic hashcode of the provide name. Used to chose colors
* for slices.
* @param {string} name The string to hash.
*/
function getStringHash(name) {
var hash = 0;
for (var i = 0; i < name.length; ++i)
hash = (hash + 37 * hash + 11 * name.charCodeAt(i)) % 0xFFFFFFFF;
return hash;
}
/**
* Gets the color pallette.
*/
function getPallette() {
return pallette;
}
/**
* @return {Number} The value to add to a color ID to get its highlighted
* colro ID. E.g. 7 + getPalletteHighlightIdBoost() yields a brightened from
* of 7's base color.
*/
function getPalletteHighlightIdBoost() {
return highlightIdBoost;
}
/**
* @param {String} name The color name.
* @return {Number} The color ID for the given color name.
*/
function getColorIdByName(name) {
if (name == 'iowait')
return numRegularColorIds;
if (name == 'running')
return numRegularColorIds + 1;
if (name == 'runnable')
return numRegularColorIds + 2;
if (name == 'sleeping')
return numRegularColorIds + 3;
throw 'Unrecognized color ' + name;
}
// Previously computed string color IDs. They are based on a stable hash, so
// it is safe to save them throughout the program time.
var stringColorIdCache = {};
/**
* @return {Number} A color ID that is stably associated to the provided via
* the getStringHash method. The color ID will be chosen from the regular
* ID space only, e.g. no reserved ID will be used.
*/
function getStringColorId(string) {
if (stringColorIdCache[string] === undefined) {
var hash = getStringHash(string);
stringColorIdCache[string] = hash % numRegularColorIds;
}
return stringColorIdCache[string];
}
/**
* Builds a model from an array of TraceEvent objects.
* @param {Object=} opt_data The event data to import into the new model.
* See TimelineModel.importEvents for details and more advanced ways to
* import data.
* @param {bool=} opt_zeroAndBoost Whether to align to zero and boost the
* by 15%. Defaults to true.
* @constructor
*/
function TimelineModel(opt_eventData, opt_zeroAndBoost) {
this.cpus = {};
this.processes = {};
this.importErrors = [];
if (opt_eventData)
this.importEvents(opt_eventData, opt_zeroAndBoost);
}
var importerConstructors = [];
/**
* Registers an importer. All registered importers are considered
* when processing an import request.
*
* @param {Function} importerConstructor The importer's constructor function.
*/
TimelineModel.registerImporter = function(importerConstructor) {
importerConstructors.push(importerConstructor);
}
TimelineModel.prototype = {
__proto__: cr.EventTarget.prototype,
get numProcesses() {
var n = 0;
for (var p in this.processes)
n++;
return n;
},
/**
* @return {TimelineProcess} Gets a specific TimelineCpu or creates one if
* it does not exist.
*/
getOrCreateCpu: function(cpuNumber) {
if (!this.cpus[cpuNumber])
this.cpus[cpuNumber] = new TimelineCpu(cpuNumber);
return this.cpus[cpuNumber];
},
/**
* @return {TimelineProcess} Gets a TimlineProcess for a specified pid or
* creates one if it does not exist.
*/
getOrCreateProcess: function(pid) {
if (!this.processes[pid])
this.processes[pid] = new TimelineProcess(pid);
return this.processes[pid];
},
/**
* The import takes an array of json-ified TraceEvents and adds them into
* the TimelineModel as processes, threads, and slices.
*/
/**
* Removes threads from the model that are fully empty.
*/
pruneEmptyThreads: function() {
for (var pid in this.processes) {
var process = this.processes[pid];
var prunedThreads = {};
for (var tid in process.threads) {
var thread = process.threads[tid];
// Begin-events without matching end events leave a thread in a state
// where the toplevel subrows are empty but child subrows have
// entries. The autocloser will fix this up later. But, for the
// purposes of pruning, such threads need to be treated as having
// content.
var hasNonEmptySubrow = false;
for (var s = 0; s < thread.subRows.length; s++)
hasNonEmptySubrow |= thread.subRows[s].length > 0;
if (hasNonEmptySubrow || thread.nonNestedSubRows.legnth)
prunedThreads[tid] = thread;
}
process.threads = prunedThreads;
}
},
updateBounds: function() {
var wmin = Infinity;
var wmax = -wmin;
var hasData = false;
var threads = this.getAllThreads();
for (var tI = 0; tI < threads.length; tI++) {
var thread = threads[tI];
thread.updateBounds();
if (thread.minTimestamp != undefined &&
thread.maxTimestamp != undefined) {
wmin = Math.min(wmin, thread.minTimestamp);
wmax = Math.max(wmax, thread.maxTimestamp);
hasData = true;
}
}
var counters = this.getAllCounters();
for (var tI = 0; tI < counters.length; tI++) {
var counter = counters[tI];
counter.updateBounds();
if (counter.minTimestamp != undefined &&
counter.maxTimestamp != undefined) {
hasData = true;
wmin = Math.min(wmin, counter.minTimestamp);
wmax = Math.max(wmax, counter.maxTimestamp);
}
}
for (var cpuNumber in this.cpus) {
var cpu = this.cpus[cpuNumber];
cpu.updateBounds();
if (cpu.minTimestamp != undefined &&
cpu.maxTimestamp != undefined) {
hasData = true;
wmin = Math.min(wmin, cpu.minTimestamp);
wmax = Math.max(wmax, cpu.maxTimestamp);
}
}
if (hasData) {
this.minTimestamp = wmin;
this.maxTimestamp = wmax;
} else {
this.maxTimestamp = undefined;
this.minTimestamp = undefined;
}
},
shiftWorldToZero: function() {
if (this.minTimestamp === undefined)
return;
var timeBase = this.minTimestamp;
var threads = this.getAllThreads();
for (var tI = 0; tI < threads.length; tI++) {
var thread = threads[tI];
var shiftSubRow = function(subRow) {
for (var tS = 0; tS < subRow.length; tS++) {
var slice = subRow[tS];
slice.start = (slice.start - timeBase);
}
};
if (thread.cpuSlices)
shiftSubRow(thread.cpuSlices);
for (var tSR = 0; tSR < thread.subRows.length; tSR++) {
shiftSubRow(thread.subRows[tSR]);
}
for (var tSR = 0; tSR < thread.nonNestedSubRows.length; tSR++) {
shiftSubRow(thread.nonNestedSubRows[tSR]);
}
}
var counters = this.getAllCounters();
for (var tI = 0; tI < counters.length; tI++) {
var counter = counters[tI];
for (var sI = 0; sI < counter.timestamps.length; sI++)
counter.timestamps[sI] = (counter.timestamps[sI] - timeBase);
}
var cpus = this.getAllCpus();
for (var tI = 0; tI < cpus.length; tI++) {
var cpu = cpus[tI];
for (var sI = 0; sI < cpu.slices.length; sI++)
cpu.slices[sI].start = (cpu.slices[sI].start - timeBase);
}
this.updateBounds();
},
getAllThreads: function() {
var threads = [];
for (var pid in this.processes) {
var process = this.processes[pid];
for (var tid in process.threads) {
threads.push(process.threads[tid]);
}
}
return threads;
},
/**
* @return {Array} An array of all cpus in the model.
*/
getAllCpus: function() {
var cpus = [];
for (var cpu in this.cpus)
cpus.push(this.cpus[cpu]);
return cpus;
},
/**
* @return {Array} An array of all processes in the model.
*/
getAllProcesses: function() {
var processes = [];
for (var pid in this.processes)
processes.push(this.processes[pid]);
return processes;
},
/**
* @return {Array} An array of all the counters in the model.
*/
getAllCounters: function() {
var counters = [];
for (var pid in this.processes) {
var process = this.processes[pid];
for (var tid in process.counters) {
counters.push(process.counters[tid]);
}
}
for (var cpuNumber in this.cpus) {
var cpu = this.cpus[cpuNumber];
for (var counterName in cpu.counters)
counters.push(cpu.counters[counterName]);
}
return counters;
},
/**
* Imports the provided events into the model. The eventData type
* is undefined and will be passed to all the timeline importers registered
* via TimelineModel.registerImporter. The first importer that returns true
* for canImport(events) will be used to import the events.
*
* @param {Object} events Events to import.
* @param {boolean} isChildImport True the eventData being imported is an
* additional trace after the primary eventData.
*/
importOneTrace_: function(eventData, isAdditionalImport) {
var importerConstructor;
for (var i = 0; i < importerConstructors.length; ++i) {
if (importerConstructors[i].canImport(eventData)) {
importerConstructor = importerConstructors[i];
break;
}
}
if (!importerConstructor)
throw 'Could not find an importer for the provided eventData.';
var importer = new importerConstructor(
this, eventData, isAdditionalImport);
importer.importEvents();
this.pruneEmptyThreads();
},
/**
* Imports the provided traces into the model. The eventData type
* is undefined and will be passed to all the timeline importers registered
* via TimelineModel.registerImporter. The first importer that returns true
* for canImport(events) will be used to import the events.
*
* The primary trace is provided via the eventData variable. If multiple
* traces are to be imported, specify the first one as events, and the
* remainder in the opt_additionalEventData array.
*
* @param {Object} eventData Events to import.
* @param {bool=} opt_zeroAndBoost Whether to align to zero and boost the
* by 15%. Defaults to true.
* @param {Array=} opt_additionalEventData An array of eventData objects
* (e.g. array of arrays) to
* import after importing the primary events.
*/
importEvents: function(eventData,
opt_zeroAndBoost, opt_additionalEventData) {
if (opt_zeroAndBoost === undefined)
opt_zeroAndBoost = true;
this.importOneTrace_(eventData, false);
if (opt_additionalEventData) {
for (var i = 0; i < opt_additionalEventData.length; ++i) {
this.importOneTrace_(opt_additionalEventData[i], true);
}
}
this.updateBounds();
if (opt_zeroAndBoost)
this.shiftWorldToZero();
if (opt_zeroAndBoost &&
this.minTimestamp !== undefined &&
this.maxTimestamp !== undefined) {
var boost = (this.maxTimestamp - this.minTimestamp) * 0.15;
this.minTimestamp = this.minTimestamp - boost;
this.maxTimestamp = this.maxTimestamp + boost;
}
}
};
return {
getPallette: getPallette,
getPalletteHighlightIdBoost: getPalletteHighlightIdBoost,
getColorIdByName: getColorIdByName,
getStringHash: getStringHash,
getStringColorId: getStringColorId,
TimelineSlice: TimelineSlice,
TimelineThread: TimelineThread,
TimelineCounter: TimelineCounter,
TimelineProcess: TimelineProcess,
TimelineCpu: TimelineCpu,
TimelineModel: TimelineModel
};
});
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/**
* @fileoverview Imports text files in the Linux event trace format into the
* timeline model. This format is output both by sched_trace and by Linux's perf
* tool.
*
* This importer assumes the events arrive as a string. The unit tests provide
* examples of the trace format.
*
* Linux scheduler traces use a definition for 'pid' that is different than
* tracing uses. Whereas tracing uses pid to identify a specific process, a pid
* in a linux trace refers to a specific thread within a process. Within this
* file, we the definition used in Linux traces, as it improves the importing
* code's readability.
*/
cr.define('tracing', function() {
/**
* Represents the scheduling state for a single thread.
* @constructor
*/
function CpuState(cpu) {
this.cpu = cpu;
}
CpuState.prototype = {
__proto__: Object.prototype,
/**
* Switches the active pid on this Cpu. If necessary, add a TimelineSlice
* to the cpu representing the time spent on that Cpu since the last call to
* switchRunningLinuxPid.
*/
switchRunningLinuxPid: function(importer, prevState, ts, pid, comm, prio) {
// Generate a slice if the last active pid was not the idle task
if (this.lastActivePid !== undefined && this.lastActivePid != 0) {
var duration = ts - this.lastActiveTs;
var thread = importer.threadsByLinuxPid[this.lastActivePid];
if (thread)
name = thread.userFriendlyName;
else
name = this.lastActiveComm;
var slice = new tracing.TimelineSlice(name,
tracing.getStringColorId(name),
this.lastActiveTs,
{comm: this.lastActiveComm,
tid: this.lastActivePid,
prio: this.lastActivePrio,
stateWhenDescheduled: prevState
},
duration);
this.cpu.slices.push(slice);
}
this.lastActiveTs = ts;
this.lastActivePid = pid;
this.lastActiveComm = comm;
this.lastActivePrio = prio;
}
};
function ThreadState(tid) {
this.openSlices = [];
}
/**
* Imports linux perf events into a specified model.
* @constructor
*/
function LinuxPerfImporter(model, events, isAdditionalImport) {
this.isAdditionalImport_ = isAdditionalImport;
this.model_ = model;
this.events_ = events;
this.clockSyncRecords_ = [];
this.cpuStates_ = {};
this.kernelThreadStates_ = {};
this.buildMapFromLinuxPidsToTimelineThreads();
// To allow simple indexing of threads, we store all the threads by their
// kernel KPID. The KPID is a unique key for a thread in the trace.
this.threadStateByKPID_ = {};
}
TestExports = {};
// Matches the generic trace record:
// <idle>-0 [001] 1.23: sched_switch
var lineRE = /^\s*(.+?)\s+\[(\d+)\]\s*(\d+\.\d+):\s+(\S+):\s(.*)$/;
TestExports.lineRE = lineRE;
// Matches the sched_switch record
var schedSwitchRE = new RegExp(
'prev_comm=(.+) prev_pid=(\\d+) prev_prio=(\\d+) prev_state=(\\S) ==> ' +
'next_comm=(.+) next_pid=(\\d+) next_prio=(\\d+)');
TestExports.schedSwitchRE = schedSwitchRE;
// Matches the sched_wakeup record
var schedWakeupRE =
/comm=(.+) pid=(\d+) prio=(\d+) success=(\d+) target_cpu=(\d+)/;
TestExports.schedWakeupRE = schedWakeupRE;
// Matches the trace_event_clock_sync record
// 0: trace_event_clock_sync: parent_ts=19581477508
var traceEventClockSyncRE = /trace_event_clock_sync: parent_ts=(\d+\.?\d*)/;
TestExports.traceEventClockSyncRE = traceEventClockSyncRE;
// Matches the workqueue_execute_start record
// workqueue_execute_start: work struct c7a8a89c: function MISRWrapper
var workqueueExecuteStartRE = /work struct (.+): function (\S+)/;
// Matches the workqueue_execute_start record
// workqueue_execute_end: work struct c7a8a89c
var workqueueExecuteEndRE = /work struct (.+)/;
/**
* Guesses whether the provided events is a Linux perf string.
* Looks for the magic string "# tracer" at the start of the file,
* or the typical task-pid-cpu-timestamp-function sequence of a typical
* trace's body.
*
* @return {boolean} True when events is a linux perf array.
*/
LinuxPerfImporter.canImport = function(events) {
if (!(typeof(events) === 'string' || events instanceof String))
return false;
if (/^# tracer:/.exec(events))
return true;
var m = /^(.+)\n/.exec(events);
if (m)
events = m[1];
if (lineRE.exec(events))
return true;
return false;
};
LinuxPerfImporter.prototype = {
__proto__: Object.prototype,
/**
* Precomputes a lookup table from linux pids back to existing
* TimelineThreads. This is used during importing to add information to each
* timeline thread about whether it was running, descheduled, sleeping, et
* cetera.
*/
buildMapFromLinuxPidsToTimelineThreads: function() {
this.threadsByLinuxPid = {};
this.model_.getAllThreads().forEach(
function(thread) {
this.threadsByLinuxPid[thread.tid] = thread;
}.bind(this));
},
/**
* @return {CpuState} A CpuState corresponding to the given cpuNumber.
*/
getOrCreateCpuState: function(cpuNumber) {
if (!this.cpuStates_[cpuNumber]) {
var cpu = this.model_.getOrCreateCpu(cpuNumber);
this.cpuStates_[cpuNumber] = new CpuState(cpu);
}
return this.cpuStates_[cpuNumber];
},
/**
* @return {number} The pid extracted from the kernel thread name.
*/
parsePid: function(kernelThreadName) {
var pid = /.+-(\d+)/.exec(kernelThreadName)[1];
pid = parseInt(pid);
return pid;
},
/**
* @return {number} The string portion of the thread extracted from the
* kernel thread name.
*/
parseThreadName: function(kernelThreadName) {
return /(.+)-\d+/.exec(kernelThreadName)[1];
},
/**
* @return {TimelinThread} A thread corresponding to the kernelThreadName
*/
getOrCreateKernelThread: function(kernelThreadName) {
if (!this.kernelThreadStates_[kernelThreadName]) {
pid = this.parsePid(kernelThreadName);
var thread = this.model_.getOrCreateProcess(pid).getOrCreateThread(pid);
thread.name = kernelThreadName;
this.kernelThreadStates_[kernelThreadName] = {
pid: pid,
thread: thread,
openSlice: undefined,
openSliceTS: undefined
};
this.threadsByLinuxPid[pid] = thread;
}
return this.kernelThreadStates_[kernelThreadName];
},
/**
* Imports the data in this.events_ into model_.
*/
importEvents: function() {
this.importCpuData();
if (!this.alignClocks())
return;
this.buildPerThreadCpuSlicesFromCpuState();
},
/**
* Builds the cpuSlices array on each thread based on our knowledge of what
* each Cpu is doing. This is done only for TimelineThreads that are
* already in the model, on the assumption that not having any traced data
* on a thread means that it is not of interest to the user.
*/
buildPerThreadCpuSlicesFromCpuState: function() {
// Push the cpu slices to the threads that they run on.
for (var cpuNumber in this.cpuStates_) {
var cpuState = this.cpuStates_[cpuNumber];
var cpu = cpuState.cpu;
for (var i = 0; i < cpu.slices.length; i++) {
var slice = cpu.slices[i];
var thread = this.threadsByLinuxPid[slice.args.tid];
if (!thread)
continue;
if (!thread.tempCpuSlices)
thread.tempCpuSlices = [];
// Because Chrome's Array.sort is not a stable sort, we need to keep
// the slice index around to keep slices with identical start times in
// the proper order when sorting them.
slice.index = i;
thread.tempCpuSlices.push(slice);
}
}
// Create slices for when the thread is not running.
var runningId = tracing.getColorIdByName('running');
var runnableId = tracing.getColorIdByName('runnable');
var sleepingId = tracing.getColorIdByName('sleeping');
var ioWaitId = tracing.getColorIdByName('iowait');
this.model_.getAllThreads().forEach(function(thread) {
if (!thread.tempCpuSlices)
return;
var origSlices = thread.tempCpuSlices;
delete thread.tempCpuSlices;
origSlices.sort(function(x, y) {
var delta = x.start - y.start;
if (delta == 0) {
// Break ties using the original slice ordering.
return x.index - y.index;
} else {
return delta;
}
});
// Walk the slice list and put slices between each original slice
// to show when the thread isn't running
var slices = [];
if (origSlices.length) {
var slice = origSlices[0];
slices.push(new tracing.TimelineSlice('Running', runningId,
slice.start, {}, slice.duration));
}
for (var i = 1; i < origSlices.length; i++) {
var prevSlice = origSlices[i - 1];
var nextSlice = origSlices[i];
var midDuration = nextSlice.start - prevSlice.end;
if (prevSlice.args.stateWhenDescheduled == 'S') {
slices.push(new tracing.TimelineSlice('Sleeping', sleepingId,
prevSlice.end, {}, midDuration));
} else if (prevSlice.args.stateWhenDescheduled == 'R') {
slices.push(new tracing.TimelineSlice('Runnable', runnableId,
prevSlice.end, {}, midDuration));
} else if (prevSlice.args.stateWhenDescheduled == 'D') {
slices.push(new tracing.TimelineSlice('I/O Wait', ioWaitId,
prevSlice.end, {}, midDuration));
} else if (prevSlice.args.stateWhenDescheduled == 'T') {
slices.push(new tracing.TimelineSlice('__TASK_STOPPED', ioWaitId,
prevSlice.end, {}, midDuration));
} else if (prevSlice.args.stateWhenDescheduled == 't') {
slices.push(new tracing.TimelineSlice('debug', ioWaitId,
prevSlice.end, {}, midDuration));
} else if (prevSlice.args.stateWhenDescheduled == 'Z') {
slices.push(new tracing.TimelineSlice('Zombie', ioWaitId,
prevSlice.end, {}, midDuration));
} else if (prevSlice.args.stateWhenDescheduled == 'X') {
slices.push(new tracing.TimelineSlice('Exit Dead', ioWaitId,
prevSlice.end, {}, midDuration));
} else if (prevSlice.args.stateWhenDescheduled == 'x') {
slices.push(new tracing.TimelineSlice('Task Dead', ioWaitId,
prevSlice.end, {}, midDuration));
} else if (prevSlice.args.stateWhenDescheduled == 'W') {
slices.push(new tracing.TimelineSlice('WakeKill', ioWaitId,
prevSlice.end, {}, midDuration));
} else {
throw 'Unrecognized state: ' + prevSlice.args.stateWhenDescheduled;
}
slices.push(new tracing.TimelineSlice('Running', runningId,
nextSlice.start, {}, nextSlice.duration));
}
thread.cpuSlices = slices;
});
},
/**
* Walks the slices stored on this.cpuStates_ and adjusts their timestamps
* based on any alignment metadata we discovered.
*/
alignClocks: function() {
if (this.clockSyncRecords_.length == 0) {
// If this is an additional import, and no clock syncing records were
// found, then abort the import. Otherwise, just skip clock alignment.
if (!this.isAdditionalImport_)
return;
// Remove the newly imported CPU slices from the model.
this.abortImport();
return false;
}
// Shift all the slice times based on the sync record.
var sync = this.clockSyncRecords_[0];
var timeShift = sync.parentTS - sync.perfTS;
for (var cpuNumber in this.cpuStates_) {
var cpuState = this.cpuStates_[cpuNumber];
var cpu = cpuState.cpu;
for (var i = 0; i < cpu.slices.length; i++) {
var slice = cpu.slices[i];
slice.start = slice.start + timeShift;
slice.duration = slice.duration;
}
for (var counterName in cpu.counters) {
var counter = cpu.counters[counterName];
for (var sI = 0; sI < counter.timestamps.length; sI++)
counter.timestamps[sI] = (counter.timestamps[sI] + timeShift);
}
}
for (var kernelThreadName in this.kernelThreadStates_) {
var kthread = this.kernelThreadStates_[kernelThreadName];
var thread = kthread.thread;
for (var i = 0; i < thread.subRows[0].length; i++) {
thread.subRows[0][i].start += timeShift;
}
}
return true;
},
/**
* Removes any data that has been added to the model because of an error
* detected during the import.
*/
abortImport: function() {
if (this.pushedEventsToThreads)
throw 'Cannot abort, have alrady pushedCpuDataToThreads.';
for (var cpuNumber in this.cpuStates_)
delete this.model_.cpus[cpuNumber];
for (var kernelThreadName in this.kernelThreadStates_) {
var kthread = this.kernelThreadStates_[kernelThreadName];
var thread = kthread.thread;
var process = thread.parent;
delete process.threads[thread.tid];
delete this.model_.processes[process.pid];
}
this.model_.importErrors.push(
'Cannot import kernel trace without a clock sync.');
},
/**
* Records the fact that a pid has become runnable. This data will
* eventually get used to derive each thread's cpuSlices array.
*/
markPidRunnable: function(ts, pid, comm, prio) {
// TODO(nduca): implement this functionality.
},
/**
* Helper to process a 'begin' event (e.g. initiate a slice).
* @param {ThreadState} state Thread state (holds slices).
* @param {string} name The trace event name.
* @param {number} ts The trace event begin timestamp.
*/
processBegin: function(state, tname, name, ts, pid, tid) {
var colorId = tracing.getStringColorId(name);
var slice = new tracing.TimelineSlice(name, colorId, ts, null);
// XXX: Should these be removed from the slice before putting it into the
// model?
slice.pid = pid;
slice.tid = tid;
slice.threadName = tname;
state.openSlices.push(slice);
},
/**
* Helper to process an 'end' event (e.g. close a slice).
* @param {ThreadState} state Thread state (holds slices).
* @param {number} ts The trace event begin timestamp.
*/
processEnd: function(state, ts) {
if (state.openSlices.length == 0) {
// Ignore E events that are unmatched.
return;
}
var slice = state.openSlices.pop();
slice.duration = ts - slice.start;
// Store the slice on the correct subrow.
var thread = this.model_.getOrCreateProcess(slice.pid).
getOrCreateThread(slice.tid);
if (!thread.name)
thread.name = slice.threadName;
this.threadsByLinuxPid[slice.tid] = thread;
var subRowIndex = state.openSlices.length;
thread.getSubrow(subRowIndex).push(slice);
// Add the slice to the subSlices array of its parent.
if (state.openSlices.length) {
var parentSlice = state.openSlices[state.openSlices.length - 1];
parentSlice.subSlices.push(slice);
}
},
/**
* Helper function that closes any open slices. This happens when a trace
* ends before an 'E' phase event can get posted. When that happens, this
* closes the slice at the highest timestamp we recorded and sets the
* didNotFinish flag to true.
*/
autoCloseOpenSlices: function() {
// We need to know the model bounds in order to assign an end-time to
// the open slices.
this.model_.updateBounds();
// The model's max value in the trace is wrong at this point if there are
// un-closed events. To close those events, we need the true global max
// value. To compute this, build a list of timestamps that weren't
// included in the max calculation, then compute the real maximum based
// on that.
var openTimestamps = [];
for (var kpid in this.threadStateByKPID_) {
var state = this.threadStateByKPID_[kpid];
for (var i = 0; i < state.openSlices.length; i++) {
var slice = state.openSlices[i];
openTimestamps.push(slice.start);
for (var s = 0; s < slice.subSlices.length; s++) {
var subSlice = slice.subSlices[s];
openTimestamps.push(subSlice.start);
if (subSlice.duration)
openTimestamps.push(subSlice.end);
}
}
}
// Figure out the maximum value of model.maxTimestamp and
// Math.max(openTimestamps). Made complicated by the fact that the model
// timestamps might be undefined.
var realMaxTimestamp;
if (this.model_.maxTimestamp) {
realMaxTimestamp = Math.max(this.model_.maxTimestamp,
Math.max.apply(Math, openTimestamps));
} else {
realMaxTimestamp = Math.max.apply(Math, openTimestamps);
}
// Automatically close any slices are still open. These occur in a number
// of reasonable situations, e.g. deadlock. This pass ensures the open
// slices make it into the final model.
for (var kpid in this.threadStateByKPID_) {
var state = this.threadStateByKPID_[kpid];
while (state.openSlices.length > 0) {
var slice = state.openSlices.pop();
slice.duration = realMaxTimestamp - slice.start;
slice.didNotFinish = true;
// Store the slice on the correct subrow.
var thread = this.model_.getOrCreateProcess(slice.pid)
.getOrCreateThread(slice.tid);
var subRowIndex = state.openSlices.length;
thread.getSubrow(subRowIndex).push(slice);
// Add the slice to the subSlices array of its parent.
if (state.openSlices.length) {
var parentSlice = state.openSlices[state.openSlices.length - 1];
parentSlice.subSlices.push(slice);
}
}
}
},
/**
* Helper that creates and adds samples to a TimelineCounter object based on
* 'C' phase events.
*/
processCounter: function(name, ts, value, pid) {
var ctr = this.model_.getOrCreateProcess(pid)
.getOrCreateCounter('', name);
// Initialize the counter's series fields if needed.
//
if (ctr.numSeries == 0) {
ctr.seriesNames.push('state');
ctr.seriesColors.push(
tracing.getStringColorId(ctr.name + '.' + 'state'));
}
// Add the sample values.
ctr.timestamps.push(ts);
ctr.samples.push(value);
},
/**
* Walks the this.events_ structure and creates TimelineCpu objects.
*/
importCpuData: function() {
this.lines_ = this.events_.split('\n');
for (var lineNumber = 0; lineNumber < this.lines_.length; ++lineNumber) {
var line = this.lines_[lineNumber];
if (/^#/.exec(line) || line.length == 0)
continue;
var eventBase = lineRE.exec(line);
if (!eventBase) {
this.model_.importErrors.push('Line ' + (lineNumber + 1) +
': Unrecognized line: ' + line);
continue;
}
var cpuState = this.getOrCreateCpuState(parseInt(eventBase[2]));
var ts = parseFloat(eventBase[3]) * 1000;
var eventName = eventBase[4];
if (eventName == 'sched_switch') {
var event = schedSwitchRE.exec(eventBase[5]);
if (!event) {
this.model_.importErrors.push('Line ' + (lineNumber + 1) +
': Malformed sched_switch event');
continue;
}
var prevState = event[4];
var nextComm = event[5];
var nextPid = parseInt(event[6]);
var nextPrio = parseInt(event[7]);
cpuState.switchRunningLinuxPid(
this, prevState, ts, nextPid, nextComm, nextPrio);
} else if (eventName == 'sched_wakeup') {
var event = schedWakeupRE.exec(eventBase[5]);
if (!event) {
this.model_.importErrors.push('Line ' + (lineNumber + 1) +
': Malformed sched_wakeup event');
continue;
}
var comm = event[1];
var pid = parseInt(event[2]);
var prio = parseInt(event[3]);
this.markPidRunnable(ts, pid, comm, prio);
} else if (eventName == 'cpu_frequency') {
var event = /state=(\d+) cpu_id=(\d+)/.exec(eventBase[5]);
if (!event) {
this.model_.importErrors.push('Line ' + (lineNumber + 1) +
': Malformed cpu_frequency event');
continue;
}
var targetCpuNumber = parseInt(event[2]);
var targetCpu = this.getOrCreateCpuState(targetCpuNumber);
var freqCounter =
targetCpu.cpu.getOrCreateCounter('', 'Frequency');
if (freqCounter.numSeries == 0) {
freqCounter.seriesNames.push('state');
freqCounter.seriesColors.push(
tracing.getStringColorId(freqCounter.name + '.' + 'state'));
}
var freqState = parseInt(event[1]);
freqCounter.timestamps.push(ts);
freqCounter.samples.push(freqState);
} else if (eventName == 'cpufreq_interactive_already' ||
eventName == 'cpufreq_interactive_target') {
var event = /cpu=(\d+) load=(\d+) cur=(\d+) targ=(\d+)/.
exec(eventBase[5]);
if (!event) {
this.model_.importErrors.push('Line ' + (lineNumber + 1) +
': Malformed cpufreq_interactive_* event');
continue;
}
var targetCpuNumber = parseInt(event[1]);
var targetCpu = this.getOrCreateCpuState(targetCpuNumber);
var loadCounter =
targetCpu.cpu.getOrCreateCounter('', 'Load');
if (loadCounter.numSeries == 0) {
loadCounter.seriesNames.push('state');
loadCounter.seriesColors.push(
tracing.getStringColorId(loadCounter.name + '.' + 'state'));
}
var loadState = parseInt(event[2]);
loadCounter.timestamps.push(ts);
loadCounter.samples.push(loadState);
loadCounter.maxTotal = 100;
loadCounter.skipUpdateBounds = true;
} else if (eventName == 'workqueue_execute_start') {
var event = workqueueExecuteStartRE.exec(eventBase[5]);
if (!event) {
this.model_.importErrors.push('Line ' + (lineNumber + 1) +
': Malformed workqueue_execute_start event');
continue;
}
var kthread = this.getOrCreateKernelThread(eventBase[1]);
kthread.openSliceTS = ts;
kthread.openSlice = event[2];
} else if (eventName == 'workqueue_execute_end') {
var event = workqueueExecuteEndRE.exec(eventBase[5]);
if (!event) {
this.model_.importErrors.push('Line ' + (lineNumber + 1) +
': Malformed workqueue_execute_start event');
continue;
}
var kthread = this.getOrCreateKernelThread(eventBase[1]);
if (kthread.openSlice) {
var slice = new tracing.TimelineSlice(kthread.openSlice,
tracing.getStringColorId(kthread.openSlice),
kthread.openSliceTS,
{},
ts - kthread.openSliceTS);
kthread.thread.subRows[0].push(slice);
}
kthread.openSlice = undefined;
} else if (eventName == '0') { // trace_mark's show up with 0 prefixes.
var event = traceEventClockSyncRE.exec(eventBase[5]);
if (event)
this.clockSyncRecords_.push({
perfTS: ts,
parentTS: event[1] * 1000
});
else {
var tid = this.parsePid(eventBase[1]);
var tname = this.parseThreadName(eventBase[1]);
var kpid = tid;
if (!(kpid in this.threadStateByKPID_))
this.threadStateByKPID_[kpid] = new ThreadState();
var state = this.threadStateByKPID_[kpid];
var event = eventBase[5].split('|')
switch (event[0]) {
case 'B':
var pid = parseInt(event[1]);
var name = event[2];
this.processBegin(state, tname, name, ts, pid, tid);
break;
case 'E':
this.processEnd(state, ts);
break;
case 'C':
var pid = parseInt(event[1]);
var name = event[2];
var value = parseInt(event[3]);
this.processCounter(name, ts, value, pid);
break;
default:
this.model_.importErrors.push('Line ' + (lineNumber + 1) +
': Unrecognized event: ' + eventBase[5]);
}
}
}
}
// Autoclose any open slices.
var hasOpenSlices = false;
for (var kpid in this.threadStateByKPID_) {
var state = this.threadStateByKPID_[kpid];
hasOpenSlices |= state.openSlices.length > 0;
}
if (hasOpenSlices)
this.autoCloseOpenSlices();
}
};
tracing.TimelineModel.registerImporter(LinuxPerfImporter);
return {
LinuxPerfImporter: LinuxPerfImporter,
_LinuxPerfImporterTestExports: TestExports
};
});
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/**
* @fileoverview TraceEventImporter imports TraceEvent-formatted data
* into the provided timeline model.
*/
cr.define('tracing', function() {
function ThreadState(tid) {
this.openSlices = [];
this.openNonNestedSlices = {};
}
function TraceEventImporter(model, eventData) {
this.model_ = model;
if (typeof(eventData) === 'string' || eventData instanceof String) {
// If the event data begins with a [, then we know it should end with a ].
// The reason we check for this is because some tracing implementations
// cannot guarantee that a ']' gets written to the trace file. So, we are
// forgiving and if this is obviously the case, we fix it up before
// throwing the string at JSON.parse.
if (eventData[0] == '[') {
n = eventData.length;
if (eventData[n - 1] != ']' && eventData[n - 1] != '\n') {
eventData = eventData + ']';
} else if (eventData[n - 2] != ']' && eventData[n - 1] == '\n') {
eventData = eventData + ']';
} else if (eventData[n - 3] != ']' && eventData[n - 2] == '\r' &&
eventData[n - 1] == '\n') {
eventData = eventData + ']';
}
}
this.events_ = JSON.parse(eventData);
} else {
this.events_ = eventData;
}
// Some trace_event implementations put the actual trace events
// inside a container. E.g { ... , traceEvents: [ ] }
//
// If we see that, just pull out the trace events.
if (this.events_.traceEvents)
this.events_ = this.events_.traceEvents;
// To allow simple indexing of threads, we store all the threads by a
// PTID. A ptid is a pid and tid joined together x:y fashion, eg
// 1024:130. The ptid is a unique key for a thread in the trace.
this.threadStateByPTID_ = {};
}
/**
* @return {boolean} Whether obj is a TraceEvent array.
*/
TraceEventImporter.canImport = function(eventData) {
// May be encoded JSON. But we dont want to parse it fully yet.
// Use a simple heuristic:
// - eventData that starts with [ are probably trace_event
// - eventData that starts with { are probably trace_event
// May be encoded JSON. Treat files that start with { as importable by us.
if (typeof(eventData) === 'string' || eventData instanceof String) {
return eventData[0] == '{' || eventData[0] == '[';
}
// Might just be an array of events
if (eventData instanceof Array && eventData[0].ph)
return true;
// Might be an object with a traceEvents field in it.
if (eventData.traceEvents)
return eventData.traceEvents instanceof Array &&
eventData.traceEvents[0].ph;
return false;
};
TraceEventImporter.prototype = {
__proto__: Object.prototype,
/**
* Helper to process a 'begin' event (e.g. initiate a slice).
* @param {ThreadState} state Thread state (holds slices).
* @param {Object} event The current trace event.
*/
processBegin: function(index, state, event) {
var colorId = tracing.getStringColorId(event.name);
var slice =
{ index: index,
slice: new tracing.TimelineSlice(event.name, colorId,
event.ts / 1000,
event.args) };
if (event.uts)
slice.slice.startInUserTime = event.uts / 1000;
if (event.args['ui-nest'] === '0') {
var sliceID = event.name;
for (var x in event.args)
sliceID += ';' + event.args[x];
if (state.openNonNestedSlices[sliceID])
this.model_.importErrors.push('Event ' + sliceID + ' already open.');
state.openNonNestedSlices[sliceID] = slice;
} else {
state.openSlices.push(slice);
}
},
/**
* Helper to process an 'end' event (e.g. close a slice).
* @param {ThreadState} state Thread state (holds slices).
* @param {Object} event The current trace event.
*/
processEnd: function(state, event) {
if (event.args['ui-nest'] === '0') {
var sliceID = event.name;
for (var x in event.args)
sliceID += ';' + event.args[x];
var slice = state.openNonNestedSlices[sliceID];
if (!slice)
return;
slice.slice.duration = (event.ts / 1000) - slice.slice.start;
if (event.uts)
slice.durationInUserTime = (event.uts / 1000) -
slice.slice.startInUserTime;
// Store the slice in a non-nested subrow.
var thread =
this.model_.getOrCreateProcess(event.pid).
getOrCreateThread(event.tid);
thread.addNonNestedSlice(slice.slice);
delete state.openNonNestedSlices[name];
} else {
if (state.openSlices.length == 0) {
// Ignore E events that are unmatched.
return;
}
var slice = state.openSlices.pop().slice;
slice.duration = (event.ts / 1000) - slice.start;
if (event.uts)
slice.durationInUserTime = (event.uts / 1000) - slice.startInUserTime;
// Store the slice on the correct subrow.
var thread = this.model_.getOrCreateProcess(event.pid).
getOrCreateThread(event.tid);
var subRowIndex = state.openSlices.length;
thread.getSubrow(subRowIndex).push(slice);
// Add the slice to the subSlices array of its parent.
if (state.openSlices.length) {
var parentSlice = state.openSlices[state.openSlices.length - 1];
parentSlice.slice.subSlices.push(slice);
}
}
},
/**
* Helper function that closes any open slices. This happens when a trace
* ends before an 'E' phase event can get posted. When that happens, this
* closes the slice at the highest timestamp we recorded and sets the
* didNotFinish flag to true.
*/
autoCloseOpenSlices: function() {
// We need to know the model bounds in order to assign an end-time to
// the open slices.
this.model_.updateBounds();
// The model's max value in the trace is wrong at this point if there are
// un-closed events. To close those events, we need the true global max
// value. To compute this, build a list of timestamps that weren't
// included in the max calculation, then compute the real maximum based
// on that.
var openTimestamps = [];
for (var ptid in this.threadStateByPTID_) {
var state = this.threadStateByPTID_[ptid];
for (var i = 0; i < state.openSlices.length; i++) {
var slice = state.openSlices[i];
openTimestamps.push(slice.slice.start);
for (var s = 0; s < slice.slice.subSlices.length; s++) {
var subSlice = slice.slice.subSlices[s];
openTimestamps.push(subSlice.start);
if (subSlice.duration)
openTimestamps.push(subSlice.end);
}
}
}
// Figure out the maximum value of model.maxTimestamp and
// Math.max(openTimestamps). Made complicated by the fact that the model
// timestamps might be undefined.
var realMaxTimestamp;
if (this.model_.maxTimestamp) {
realMaxTimestamp = Math.max(this.model_.maxTimestamp,
Math.max.apply(Math, openTimestamps));
} else {
realMaxTimestamp = Math.max.apply(Math, openTimestamps);
}
// Automatically close any slices are still open. These occur in a number
// of reasonable situations, e.g. deadlock. This pass ensures the open
// slices make it into the final model.
for (var ptid in this.threadStateByPTID_) {
var state = this.threadStateByPTID_[ptid];
while (state.openSlices.length > 0) {
var slice = state.openSlices.pop();
slice.slice.duration = realMaxTimestamp - slice.slice.start;
slice.slice.didNotFinish = true;
var event = this.events_[slice.index];
// Store the slice on the correct subrow.
var thread = this.model_.getOrCreateProcess(event.pid)
.getOrCreateThread(event.tid);
var subRowIndex = state.openSlices.length;
thread.getSubrow(subRowIndex).push(slice.slice);
// Add the slice to the subSlices array of its parent.
if (state.openSlices.length) {
var parentSlice = state.openSlices[state.openSlices.length - 1];
parentSlice.slice.subSlices.push(slice.slice);
}
}
}
},
/**
* Helper that creates and adds samples to a TimelineCounter object based on
* 'C' phase events.
*/
processCounter: function(event) {
var ctr_name;
if (event.id !== undefined)
ctr_name = event.name + '[' + event.id + ']';
else
ctr_name = event.name;
var ctr = this.model_.getOrCreateProcess(event.pid)
.getOrCreateCounter(event.cat, ctr_name);
// Initialize the counter's series fields if needed.
if (ctr.numSeries == 0) {
for (var seriesName in event.args) {
ctr.seriesNames.push(seriesName);
ctr.seriesColors.push(
tracing.getStringColorId(ctr.name + '.' + seriesName));
}
if (ctr.numSeries == 0) {
this.model_.importErrors.push('Expected counter ' + event.name +
' to have at least one argument to use as a value.');
// Drop the counter.
delete ctr.parent.counters[ctr.name];
return;
}
}
// Add the sample values.
ctr.timestamps.push(event.ts / 1000);
for (var i = 0; i < ctr.numSeries; i++) {
var seriesName = ctr.seriesNames[i];
if (event.args[seriesName] === undefined) {
ctr.samples.push(0);
continue;
}
ctr.samples.push(event.args[seriesName]);
}
},
/**
* Walks through the events_ list and outputs the structures discovered to
* model_.
*/
importEvents: function() {
// Walk through events
var events = this.events_;
for (var eI = 0; eI < events.length; eI++) {
var event = events[eI];
var ptid = event.pid + ':' + event.tid;
if (!(ptid in this.threadStateByPTID_))
this.threadStateByPTID_[ptid] = new ThreadState();
var state = this.threadStateByPTID_[ptid];
if (event.ph == 'B') {
this.processBegin(eI, state, event);
} else if (event.ph == 'E') {
this.processEnd(state, event);
} else if (event.ph == 'I') {
// Treat an Instant event as a duration 0 slice.
// TimelineSliceTrack's redraw() knows how to handle this.
this.processBegin(eI, state, event);
this.processEnd(state, event);
} else if (event.ph == 'C') {
this.processCounter(event);
} else if (event.ph == 'M') {
if (event.name == 'thread_name') {
var thread = this.model_.getOrCreateProcess(event.pid)
.getOrCreateThread(event.tid);
thread.name = event.args.name;
} else {
this.model_.importErrors.push(
'Unrecognized metadata name: ' + event.name);
}
} else {
this.model_.importErrors.push(
'Unrecognized event phase: ' + event.ph +
'(' + event.name + ')');
}
}
// Autoclose any open slices.
var hasOpenSlices = false;
for (var ptid in this.threadStateByPTID_) {
var state = this.threadStateByPTID_[ptid];
hasOpenSlices |= state.openSlices.length > 0;
}
if (hasOpenSlices)
this.autoCloseOpenSlices();
}
};
tracing.TimelineModel.registerImporter(TraceEventImporter);
return {
TraceEventImporter: TraceEventImporter
};
});
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/**
* @fileoverview Helper functions for doing intersections and iteration
* over sorted arrays and intervals.
*
*/
cr.define('tracing', function() {
/**
* Finds the first index in the array whose value is >= loVal.
*
* The key for the search is defined by the mapFn. This array must
* be prearranged such that ary.map(mapFn) would also be sorted in
* ascending order.
*
* @param {Array} ary An array of arbitrary objects.
* @param {function():*} mapFn Callback that produces a key value
* from an element in ary.
* @param {number} loVal Value for which to search.
* @return {Number} Offset o into ary where all ary[i] for i <= o
* are < loVal, or ary.length if loVal is greater than all elements in
* the array.
*/
function findLowIndexInSortedArray(ary, mapFn, loVal) {
if (ary.length == 0)
return 1;
var low = 0;
var high = ary.length - 1;
var i, comparison;
var hitPos = -1;
while (low <= high) {
i = Math.floor((low + high) / 2);
comparison = mapFn(ary[i]) - loVal;
if (comparison < 0) {
low = i + 1; continue;
} else if (comparison > 0) {
high = i - 1; continue;
} else {
hitPos = i;
high = i - 1;
}
}
// return where we hit, or failing that the low pos
return hitPos != -1 ? hitPos : low;
}
/**
* Finds an index in an array of intervals that either
* intersects the provided loVal, or if no intersection is found,
* the index of the first interval whose start is > loVal.
*
* The array of intervals is defined implicitly via two mapping functions
* over the provided ary. mapLoFn determines the lower value of the interval,
* mapWidthFn the width. Intersection is lower-inclusive, e.g. [lo,lo+w).
*
* The array of intervals formed by this mapping must be non-overlapping and
* sorted in ascending order by loVal.
*
* @param {Array} ary An array of objects that can be converted into sorted
* nonoverlapping ranges [x,y) using the mapLoFn and mapWidth.
* @param {function():*} mapLoFn Callback that produces the low value for the
* interval represented by an element in the array.
* @param {function():*} mapLoFn Callback that produces the width for the
* interval represented by an element in the array.
* @param {number} loVal The low value for the search.
* @return {Number} An index in the array that intersects or is first-above
* loVal, -1 if none found and loVal is below than all the intervals,
* ary.length if loVal is greater than all the intervals.
*/
function findLowIndexInSortedIntervals(ary, mapLoFn, mapWidthFn, loVal) {
var first = findLowIndexInSortedArray(ary, mapLoFn, loVal);
if (first == 0) {
if (loVal >= mapLoFn(ary[0]) &&
loVal < mapLoFn(ary[0] + mapWidthFn(ary[0]))) {
return 0;
} else {
return -1;
}
} else if (first <= ary.length &&
loVal >= mapLoFn(ary[first - 1]) &&
loVal < mapLoFn(ary[first - 1]) + mapWidthFn(ary[first - 1])) {
return first - 1;
} else {
return ary.length;
}
}
/**
* Calls cb for all intervals in the implicit array of intervals
* defnied by ary, mapLoFn and mapHiFn that intersect the range
* [loVal,hiVal)
*
* This function uses the same scheme as findLowIndexInSortedArray
* to define the intervals. The same restrictions on sortedness and
* non-overlappingness apply.
*
* @param {Array} ary An array of objects that can be converted into sorted
* nonoverlapping ranges [x,y) using the mapLoFn and mapWidth.
* @param {function():*} mapLoFn Callback that produces the low value for the
* interval represented by an element in the array.
* @param {function():*} mapLoFn Callback that produces the width for the
* interval represented by an element in the array.
* @param {number} The low value for the search, inclusive.
* @param {number} loVal The high value for the search, non inclusive.
* @param {function():*} cb The function to run for intersecting intervals.
*/
function iterateOverIntersectingIntervals(ary, mapLoFn, mapWidthFn, loVal,
hiVal, cb) {
if (loVal > hiVal) return;
var i = findLowIndexInSortedArray(ary, mapLoFn, loVal);
if (i == -1) {
return;
}
if (i > 0) {
var hi = mapLoFn(ary[i - 1]) + mapWidthFn(ary[i - 1]);
if (hi >= loVal) {
cb(ary[i - 1]);
}
}
if (i == ary.length) {
return;
}
for (var n = ary.length; i < n; i++) {
var lo = mapLoFn(ary[i]);
if (lo >= hiVal)
break;
cb(ary[i]);
}
}
/**
* Non iterative version of iterateOverIntersectingIntervals.
*
* @return {Array} Array of elements in ary that intersect loVal, hiVal.
*/
function getIntersectingIntervals(ary, mapLoFn, mapWidthFn, loVal, hiVal) {
var tmp = [];
iterateOverIntersectingIntervals(ary, mapLoFn, mapWidthFn, loVal, hiVal,
function(d) {
tmp.push(d);
});
return tmp;
}
return {
findLowIndexInSortedArray: findLowIndexInSortedArray,
findLowIndexInSortedIntervals: findLowIndexInSortedIntervals,
iterateOverIntersectingIntervals: iterateOverIntersectingIntervals,
getIntersectingIntervals: getIntersectingIntervals
};
});
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
cr.define('tracing', function() {
/**
* Uses an embedded iframe to measure provided elements without forcing layout
* on the main document.
* @constructor
* @extends {Object}
*/
function MeasuringStick() {
var iframe = document.createElement('iframe');
iframe.style.cssText = 'width:100%;height:0;border:0;visibility:hidden';
document.body.appendChild(iframe);
this._doc = iframe.contentDocument;
this._window = iframe.contentWindow;
this._doc.body.style.cssText = 'padding:0;margin:0;overflow:hidden';
var stylesheets = document.querySelectorAll('link[rel=stylesheet]');
for (var i = 0; i < stylesheets.length; i++) {
var stylesheet = stylesheets[i];
var link = this._doc.createElement('link');
link.rel = 'stylesheet';
link.href = stylesheet.href;
this._doc.head.appendChild(link);
}
}
MeasuringStick.prototype = {
__proto__: Object.prototype,
/**
* Measures the provided element without forcing layout on the main
* document.
*/
measure: function(element) {
this._doc.body.appendChild(element);
var style = this._window.getComputedStyle(element);
var width = parseInt(style.width, 10);
var height = parseInt(style.height, 10);
this._doc.body.removeChild(element);
return { width: width, height: height };
}
};
return {
MeasuringStick: MeasuringStick
};
});
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/**
* @fileoverview Interactive visualizaiton of TimelineModel objects
* based loosely on gantt charts. Each thread in the TimelineModel is given a
* set of TimelineTracks, one per subrow in the thread. The Timeline class
* acts as a controller, creating the individual tracks, while TimelineTracks
* do actual drawing.
*
* Visually, the Timeline produces (prettier) visualizations like the following:
* Thread1: AAAAAAAAAA AAAAA
* BBBB BB
* Thread2: CCCCCC CCCCC
*
*/
cr.define('tracing', function() {
/**
* The TimelineViewport manages the transform used for navigating
* within the timeline. It is a simple transform:
* x' = (x+pan) * scale
*
* The timeline code tries to avoid directly accessing this transform,
* instead using this class to do conversion between world and view space,
* as well as the math for centering the viewport in various interesting
* ways.
*
* @constructor
* @extends {cr.EventTarget}
*/
function TimelineViewport(parentEl) {
this.parentEl_ = parentEl;
this.scaleX_ = 1;
this.panX_ = 0;
this.gridTimebase_ = 0;
this.gridStep_ = 1000 / 60;
this.gridEnabled_ = false;
this.hasCalledSetupFunction_ = false;
this.onResizeBoundToThis_ = this.onResize_.bind(this);
// The following code uses an interval to detect when the parent element
// is attached to the document. That is a trigger to run the setup function
// and install a resize listener.
this.checkForAttachInterval_ = setInterval(
this.checkForAttach_.bind(this), 250);
}
TimelineViewport.prototype = {
__proto__: cr.EventTarget.prototype,
/**
* Allows initialization of the viewport when the viewport's parent element
* has been attached to the document and given a size.
* @param {Function} fn Function to call when the viewport can be safely
* initialized.
*/
setWhenPossible: function(fn) {
this.pendingSetFunction_ = fn;
},
/**
* @return {boolean} Whether the current timeline is attached to the
* document.
*/
get isAttachedToDocument_() {
var cur = this.parentEl_;
while (cur.parentNode)
cur = cur.parentNode;
return cur == this.parentEl_.ownerDocument;
},
onResize_: function() {
this.dispatchChangeEvent();
},
/**
* Checks whether the parentNode is attached to the document.
* When it is, it installs the iframe-based resize detection hook
* and then runs the pendingSetFunction_, if present.
*/
checkForAttach_: function() {
if (!this.isAttachedToDocument_ || this.clientWidth == 0)
return;
if (!this.iframe_) {
this.iframe_ = document.createElement('iframe');
this.iframe_.style.cssText =
'position:absolute;width:100%;height:0;border:0;visibility:hidden;';
this.parentEl_.appendChild(this.iframe_);
this.iframe_.contentWindow.addEventListener('resize',
this.onResizeBoundToThis_);
}
var curSize = this.clientWidth + 'x' + this.clientHeight;
if (this.pendingSetFunction_) {
this.lastSize_ = curSize;
this.pendingSetFunction_();
this.pendingSetFunction_ = undefined;
}
window.clearInterval(this.checkForAttachInterval_);
this.checkForAttachInterval_ = undefined;
},
/**
* Fires the change event on this viewport. Used to notify listeners
* to redraw when the underlying model has been mutated.
*/
dispatchChangeEvent: function() {
cr.dispatchSimpleEvent(this, 'change');
},
detach: function() {
if (this.checkForAttachInterval_) {
window.clearInterval(this.checkForAttachInterval_);
this.checkForAttachInterval_ = undefined;
}
this.iframe_.removeEventListener('resize', this.onResizeBoundToThis_);
this.parentEl_.removeChild(this.iframe_);
},
get scaleX() {
return this.scaleX_;
},
set scaleX(s) {
var changed = this.scaleX_ != s;
if (changed) {
this.scaleX_ = s;
this.dispatchChangeEvent();
}
},
get panX() {
return this.panX_;
},
set panX(p) {
var changed = this.panX_ != p;
if (changed) {
this.panX_ = p;
this.dispatchChangeEvent();
}
},
setPanAndScale: function(p, s) {
var changed = this.scaleX_ != s || this.panX_ != p;
if (changed) {
this.scaleX_ = s;
this.panX_ = p;
this.dispatchChangeEvent();
}
},
xWorldToView: function(x) {
return (x + this.panX_) * this.scaleX_;
},
xWorldVectorToView: function(x) {
return x * this.scaleX_;
},
xViewToWorld: function(x) {
return (x / this.scaleX_) - this.panX_;
},
xViewVectorToWorld: function(x) {
return x / this.scaleX_;
},
xPanWorldPosToViewPos: function(worldX, viewX, viewWidth) {
if (typeof viewX == 'string') {
if (viewX == 'left') {
viewX = 0;
} else if (viewX == 'center') {
viewX = viewWidth / 2;
} else if (viewX == 'right') {
viewX = viewWidth - 1;
} else {
throw Error('unrecognized string for viewPos. left|center|right');
}
}
this.panX = (viewX / this.scaleX_) - worldX;
},
get gridEnabled() {
return this.gridEnabled_;
},
set gridEnabled(enabled) {
if (this.gridEnabled_ == enabled)
return;
this.gridEnabled_ = enabled && true;
this.dispatchChangeEvent();
},
get gridTimebase() {
return this.gridTimebase_;
},
set gridTimebase(timebase) {
if (this.gridTimebase_ == timebase)
return;
this.gridTimebase_ = timebase;
cr.dispatchSimpleEvent(this, 'change');
},
get gridStep() {
return this.gridStep_;
},
applyTransformToCanavs: function(ctx) {
ctx.transform(this.scaleX_, 0, 0, 1, this.panX_ * this.scaleX_, 0);
}
};
/**
* Renders a TimelineModel into a div element, making one
* TimelineTrack for each subrow in each thread of the model, managing
* overall track layout, and handling user interaction with the
* viewport.
*
* @constructor
* @extends {HTMLDivElement}
*/
Timeline = cr.ui.define('div');
Timeline.prototype = {
__proto__: HTMLDivElement.prototype,
model_: null,
decorate: function() {
this.classList.add('timeline');
this.viewport_ = new TimelineViewport(this);
this.tracks_ = this.ownerDocument.createElement('div');
this.appendChild(this.tracks_);
this.dragBox_ = this.ownerDocument.createElement('div');
this.dragBox_.className = 'timeline-drag-box';
this.appendChild(this.dragBox_);
this.hideDragBox_();
this.bindEventListener_(document, 'keypress', this.onKeypress_, this);
this.bindEventListener_(document, 'keydown', this.onKeydown_, this);
this.bindEventListener_(document, 'mousedown', this.onMouseDown_, this);
this.bindEventListener_(document, 'mousemove', this.onMouseMove_, this);
this.bindEventListener_(document, 'mouseup', this.onMouseUp_, this);
this.bindEventListener_(document, 'dblclick', this.onDblClick_, this);
this.lastMouseViewPos_ = {x: 0, y: 0};
this.selection_ = [];
},
/**
* Wraps the standard addEventListener but automatically binds the provided
* func to the provided target, tracking the resulting closure. When detach
* is called, these listeners will be automatically removed.
*/
bindEventListener_: function(object, event, func, target) {
if (!this.boundListeners_)
this.boundListeners_ = [];
var boundFunc = func.bind(target);
this.boundListeners_.push({object: object,
event: event,
boundFunc: boundFunc});
object.addEventListener(event, boundFunc);
},
detach: function() {
for (var i = 0; i < this.tracks_.children.length; i++)
this.tracks_.children[i].detach();
for (var i = 0; i < this.boundListeners_.length; i++) {
var binding = this.boundListeners_[i];
binding.object.removeEventListener(binding.event, binding.boundFunc);
}
this.boundListeners_ = undefined;
this.viewport_.detach();
},
get viewport() {
return this.viewport_;
},
get model() {
return this.model_;
},
set model(model) {
if (!model)
throw Error('Model cannot be null');
if (this.model) {
throw Error('Cannot set model twice.');
}
this.model_ = model;
// Figure out all the headings.
var allHeadings = [];
model.getAllThreads().forEach(function(t) {
allHeadings.push(t.userFriendlyName);
});
model.getAllCounters().forEach(function(c) {
allHeadings.push(c.name);
});
model.getAllCpus().forEach(function(c) {
allHeadings.push('CPU ' + c.cpuNumber);
});
// Figure out the maximum heading size.
var maxHeadingWidth = 0;
var measuringStick = new tracing.MeasuringStick();
var headingEl = document.createElement('div');
headingEl.style.position = 'fixed';
headingEl.className = 'timeline-canvas-based-track-title';
allHeadings.forEach(function(text) {
headingEl.textContent = text + ':__';
var w = measuringStick.measure(headingEl).width;
// Limit heading width to 300px.
if (w > 300)
w = 300;
if (w > maxHeadingWidth)
maxHeadingWidth = w;
});
maxHeadingWidth = maxHeadingWidth + 'px';
// Reset old tracks.
for (var i = 0; i < this.tracks_.children.length; i++)
this.tracks_.children[i].detach();
this.tracks_.textContent = '';
// Get a sorted list of CPUs
var cpus = model.getAllCpus();
cpus.sort(tracing.TimelineCpu.compare);
// Create tracks for each CPU.
cpus.forEach(function(cpu) {
var track = new tracing.TimelineCpuTrack();
track.heading = 'CPU ' + cpu.cpuNumber + ':';
track.headingWidth = maxHeadingWidth;
track.viewport = this.viewport_;
track.cpu = cpu;
this.tracks_.appendChild(track);
for (var counterName in cpu.counters) {
var counter = cpu.counters[counterName];
track = new tracing.TimelineCounterTrack();
track.heading = 'CPU ' + cpu.cpuNumber + ' ' + counter.name + ':';
track.headingWidth = maxHeadingWidth;
track.viewport = this.viewport_;
track.counter = counter;
this.tracks_.appendChild(track);
}
}.bind(this));
// Get a sorted list of processes.
var processes = model.getAllProcesses();
processes.sort(tracing.TimelineProcess.compare);
// Create tracks for each process.
processes.forEach(function(process) {
// Add counter tracks for this process.
var counters = [];
for (var tid in process.counters)
counters.push(process.counters[tid]);
counters.sort(tracing.TimelineCounter.compare);
// Create the counters for this process.
counters.forEach(function(counter) {
var track = new tracing.TimelineCounterTrack();
track.heading = counter.name + ':';
track.headingWidth = maxHeadingWidth;
track.viewport = this.viewport_;
track.counter = counter;
this.tracks_.appendChild(track);
}.bind(this));
// Get a sorted list of threads.
var threads = [];
for (var tid in process.threads)
threads.push(process.threads[tid]);
threads.sort(tracing.TimelineThread.compare);
// Create the threads.
threads.forEach(function(thread) {
var track = new tracing.TimelineThreadTrack();
track.heading = thread.userFriendlyName + ':';
track.tooltip = thread.userFriendlyDetials;
track.headingWidth = maxHeadingWidth;
track.viewport = this.viewport_;
track.thread = thread;
this.tracks_.appendChild(track);
}.bind(this));
}.bind(this));
// Set up a reasonable viewport.
this.viewport_.setWhenPossible(function() {
var rangeTimestamp = this.model_.maxTimestamp -
this.model_.minTimestamp;
var w = this.firstCanvas.width;
var scaleX = w / rangeTimestamp;
var panX = -this.model_.minTimestamp;
this.viewport_.setPanAndScale(panX, scaleX);
}.bind(this));
},
/**
* @return {Element} The element whose focused state determines
* whether to respond to keyboard inputs.
* Defaults to the parent element.
*/
get focusElement() {
if (this.focusElement_)
return this.focusElement_;
return this.parentElement;
},
/**
* Sets the element whose focus state will determine whether
* to respond to keybaord input.
*/
set focusElement(value) {
this.focusElement_ = value;
},
get listenToKeys_() {
if (!this.focusElement_)
return true;
if (this.focusElement.tabIndex >= 0)
return document.activeElement == this.focusElement;
return true;
},
onKeypress_: function(e) {
var vp = this.viewport_;
if (!this.firstCanvas)
return;
if (!this.listenToKeys_)
return;
var viewWidth = this.firstCanvas.clientWidth;
var curMouseV, curCenterW;
switch (e.keyCode) {
case 101: // e
var vX = this.lastMouseViewPos_.x;
var wX = vp.xViewToWorld(this.lastMouseViewPos_.x);
var distFromCenter = vX - (viewWidth / 2);
var percFromCenter = distFromCenter / viewWidth;
var percFromCenterSq = percFromCenter * percFromCenter;
vp.xPanWorldPosToViewPos(wX, 'center', viewWidth);
break;
case 119: // w
this.zoomBy_(1.5);
break;
case 115: // s
this.zoomBy_(1 / 1.5);
break;
case 103: // g
this.onGridToggle_(true);
break;
case 71: // G
this.onGridToggle_(false);
break;
case 87: // W
this.zoomBy_(10);
break;
case 83: // S
this.zoomBy_(1 / 10);
break;
case 97: // a
vp.panX += vp.xViewVectorToWorld(viewWidth * 0.1);
break;
case 100: // d
vp.panX -= vp.xViewVectorToWorld(viewWidth * 0.1);
break;
case 65: // A
vp.panX += vp.xViewVectorToWorld(viewWidth * 0.5);
break;
case 68: // D
vp.panX -= vp.xViewVectorToWorld(viewWidth * 0.5);
break;
}
},
// Not all keys send a keypress.
onKeydown_: function(e) {
if (!this.listenToKeys_)
return;
switch (e.keyCode) {
case 37: // left arrow
this.selectPrevious_(e);
e.preventDefault();
break;
case 39: // right arrow
this.selectNext_(e);
e.preventDefault();
break;
case 9: // TAB
if (this.focusElement.tabIndex == -1) {
if (e.shiftKey)
this.selectPrevious_(e);
else
this.selectNext_(e);
e.preventDefault();
}
break;
}
},
/**
* Zoom in or out on the timeline by the given scale factor.
* @param {integer} scale The scale factor to apply. If <1, zooms out.
*/
zoomBy_: function(scale) {
if (!this.firstCanvas)
return;
var vp = this.viewport_;
var viewWidth = this.firstCanvas.clientWidth;
var curMouseV = this.lastMouseViewPos_.x;
var curCenterW = vp.xViewToWorld(curMouseV);
vp.scaleX = vp.scaleX * scale;
vp.xPanWorldPosToViewPos(curCenterW, curMouseV, viewWidth);
},
/** Select the next slice on the timeline. Applies to each track. */
selectNext_: function(e) {
this.selectAdjoining_(e, true);
},
/** Select the previous slice on the timeline. Applies to each track. */
selectPrevious_: function(e) {
this.selectAdjoining_(e, false);
},
/**
* Helper for selection previous or next.
* @param {Event} The current event.
* @param {boolean} forwardp If true, select one forward (next).
* Else, select previous.
*/
selectAdjoining_: function(e, forwardp) {
var i, track, slice, adjoining;
var selection = [];
// Clear old selection; try and select next.
for (i = 0; i < this.selection_.length; i++) {
adjoining = undefined;
this.selection_[i].slice.selected = false;
track = this.selection_[i].track;
slice = this.selection_[i].slice;
if (slice) {
if (forwardp)
adjoining = track.pickNext(slice);
else
adjoining = track.pickPrevious(slice);
}
if (adjoining != undefined)
selection.push({track: track, slice: adjoining});
}
this.selection = selection;
e.preventDefault();
},
get keyHelp() {
var help = 'Keyboard shortcuts:\n' +
' w/s : Zoom in/out (with shift: go faster)\n' +
' a/d : Pan left/right\n' +
' e : Center on mouse\n' +
' g/G : Shows grid at the start/end of the selected task\n';
if (this.focusElement.tabIndex) {
help += ' <- : Select previous event on current timeline\n' +
' -> : Select next event on current timeline\n';
} else {
help += ' <-,^TAB : Select previous event on current timeline\n' +
' ->, TAB : Select next event on current timeline\n';
}
help +=
'\n' +
'Dbl-click to zoom in; Shift dbl-click to zoom out\n';
return help;
},
get selection() {
return this.selection_;
},
set selection(selection) {
// Clear old selection.
for (i = 0; i < this.selection_.length; i++)
this.selection_[i].slice.selected = false;
this.selection_ = selection;
cr.dispatchSimpleEvent(this, 'selectionChange');
for (i = 0; i < this.selection_.length; i++)
this.selection_[i].slice.selected = true;
this.viewport_.dispatchChangeEvent(); // Triggers a redraw.
},
get firstCanvas() {
return this.tracks_.firstChild ?
this.tracks_.firstChild.firstCanvas : undefined;
},
hideDragBox_: function() {
this.dragBox_.style.left = '-1000px';
this.dragBox_.style.top = '-1000px';
this.dragBox_.style.width = 0;
this.dragBox_.style.height = 0;
},
setDragBoxPosition_: function(eDown, eCur) {
var loX = Math.min(eDown.clientX, eCur.clientX);
var hiX = Math.max(eDown.clientX, eCur.clientX);
var loY = Math.min(eDown.clientY, eCur.clientY);
var hiY = Math.max(eDown.clientY, eCur.clientY);
this.dragBox_.style.left = loX + 'px';
this.dragBox_.style.top = loY + 'px';
this.dragBox_.style.width = hiX - loX + 'px';
this.dragBox_.style.height = hiY - loY + 'px';
var canv = this.firstCanvas;
var loWX = this.viewport_.xViewToWorld(loX - canv.offsetLeft);
var hiWX = this.viewport_.xViewToWorld(hiX - canv.offsetLeft);
var roundedDuration = Math.round((hiWX - loWX) * 100) / 100;
this.dragBox_.textContent = roundedDuration + 'ms';
var e = new cr.Event('selectionChanging');
e.loWX = loWX;
e.hiWX = hiWX;
this.dispatchEvent(e);
},
onGridToggle_: function(left) {
var tb;
if (left)
tb = Math.min.apply(Math, this.selection_.map(
function(x) { return x.slice.start; }));
else
tb = Math.max.apply(Math, this.selection_.map(
function(x) { return x.slice.end; }));
// Shift the timebase left until its just left of minTimestamp.
var numInterfvalsSinceStart = Math.ceil((tb - this.model_.minTimestamp) /
this.viewport_.gridStep_);
this.viewport_.gridTimebase = tb -
(numInterfvalsSinceStart + 1) * this.viewport_.gridStep_;
this.viewport_.gridEnabled = true;
},
onMouseDown_: function(e) {
rect = this.tracks_.getClientRects()[0];
var inside = rect &&
e.clientX >= rect.left &&
e.clientX < rect.right &&
e.clientY >= rect.top &&
e.clientY < rect.bottom;
if (!inside)
return;
var canv = this.firstCanvas;
var pos = {
x: e.clientX - canv.offsetLeft,
y: e.clientY - canv.offsetTop
};
var wX = this.viewport_.xViewToWorld(pos.x);
this.dragBeginEvent_ = e;
e.preventDefault();
if (this.focusElement.tabIndex >= 0)
this.focusElement.focus();
},
onMouseMove_: function(e) {
if (!this.firstCanvas)
return;
var canv = this.firstCanvas;
var pos = {
x: e.clientX - canv.offsetLeft,
y: e.clientY - canv.offsetTop
};
// Remember position. Used during keyboard zooming.
this.lastMouseViewPos_ = pos;
// Update the drag box
if (this.dragBeginEvent_) {
this.setDragBoxPosition_(this.dragBeginEvent_, e);
}
},
onMouseUp_: function(e) {
var i;
if (this.dragBeginEvent_) {
// Stop the dragging.
this.hideDragBox_();
var eDown = this.dragBeginEvent_;
this.dragBeginEvent_ = null;
// Figure out extents of the drag.
var loX = Math.min(eDown.clientX, e.clientX);
var hiX = Math.max(eDown.clientX, e.clientX);
var loY = Math.min(eDown.clientY, e.clientY);
var hiY = Math.max(eDown.clientY, e.clientY);
// Convert to worldspace.
var canv = this.firstCanvas;
var loWX = this.viewport_.xViewToWorld(loX - canv.offsetLeft);
var hiWX = this.viewport_.xViewToWorld(hiX - canv.offsetLeft);
// Figure out what has been hit.
var selection = [];
function addHit(type, track, slice) {
selection.push({track: track, slice: slice});
}
for (i = 0; i < this.tracks_.children.length; i++) {
var track = this.tracks_.children[i];
// Only check tracks that insersect the rect.
var trackClientRect = track.getBoundingClientRect();
var a = Math.max(loY, trackClientRect.top);
var b = Math.min(hiY, trackClientRect.bottom);
if (a <= b) {
track.pickRange(loWX, hiWX, loY, hiY, addHit);
}
}
// Activate the new selection.
this.selection = selection;
}
},
onDblClick_: function(e) {
var scale = 4;
if (e.shiftKey)
scale = 1 / scale;
this.zoomBy_(scale);
e.preventDefault();
}
};
/**
* The TimelineModel being viewed by the timeline
* @type {TimelineModel}
*/
cr.defineProperty(Timeline, 'model', cr.PropertyKind.JS);
return {
Timeline: Timeline,
TimelineViewport: TimelineViewport
};
});
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/**
* @fileoverview Renders an array of slices into the provided div,
* using a child canvas element. Uses a FastRectRenderer to draw only
* the visible slices.
*/
cr.define('tracing', function() {
var pallette = tracing.getPallette();
var highlightIdBoost = tracing.getPalletteHighlightIdBoost();
var textWidthMap = { };
function quickMeasureText(ctx, text) {
var w = textWidthMap[text];
if (!w) {
w = ctx.measureText(text).width;
textWidthMap[text] = w;
}
return w;
}
/**
* A generic track that contains other tracks as its children.
* @constructor
*/
var TimelineContainerTrack = cr.ui.define('div');
TimelineContainerTrack.prototype = {
__proto__: HTMLDivElement.prototype,
decorate: function() {
this.tracks_ = [];
},
detach: function() {
for (var i = 0; i < this.tracks_.length; i++)
this.tracks_[i].detach();
},
get viewport() {
return this.viewport_;
},
set viewport(v) {
this.viewport_ = v;
for (var i = 0; i < this.tracks_.length; i++)
this.tracks_[i].viewport = v;
this.updateChildTracks_();
},
get firstCanvas() {
if (this.tracks_.length)
return this.tracks_[0].firstCanvas;
return undefined;
},
/**
* Picks a slice, if any, at a given location.
* @param {number} wX X location to search at, in worldspace.
* @param {number} wY Y location to search at, in offset space.
* offset space.
* @param {function():*} onHitCallback Callback to call with the slice,
* if one is found.
* @return {boolean} true if a slice was found, otherwise false.
*/
pick: function(wX, wY, onHitCallback) {
for (var i = 0; i < this.tracks_.length; i++) {
var trackClientRect = this.tracks_[i].getBoundingClientRect();
if (wY >= trackClientRect.top && wY < trackClientRect.bottom)
return this.tracks_[i].pick(wX, onHitCallback);
}
return false;
},
/**
* Finds slices intersecting the given interval.
* @param {number} loWX Lower X bound of the interval to search, in
* worldspace.
* @param {number} hiWX Upper X bound of the interval to search, in
* worldspace.
* @param {number} loY Lower Y bound of the interval to search, in
* offset space.
* @param {number} hiY Upper Y bound of the interval to search, in
* offset space.
* @param {function():*} onHitCallback Function to call for each slice
* intersecting the interval.
*/
pickRange: function(loWX, hiWX, loY, hiY, onHitCallback) {
for (var i = 0; i < this.tracks_.length; i++) {
var trackClientRect = this.tracks_[i].getBoundingClientRect();
var a = Math.max(loY, trackClientRect.top);
var b = Math.min(hiY, trackClientRect.bottom);
if (a <= b)
this.tracks_[i].pickRange(loWX, hiWX, loY, hiY, onHitCallback);
}
}
};
/**
* Visualizes a TimelineThread using a series of of TimelineSliceTracks.
* @constructor
*/
var TimelineThreadTrack = cr.ui.define(TimelineContainerTrack);
TimelineThreadTrack.prototype = {
__proto__: TimelineContainerTrack.prototype,
decorate: function() {
this.classList.add('timeline-thread-track');
},
get thread(thread) {
return this.thread_;
},
set thread(thread) {
this.thread_ = thread;
this.updateChildTracks_();
},
get tooltip() {
return this.tooltip_;
},
set tooltip(value) {
this.tooltip_ = value;
this.updateChildTracks_();
},
get heading() {
return this.heading_;
},
set heading(h) {
this.heading_ = h;
this.updateChildTracks_();
},
get headingWidth() {
return this.headingWidth_;
},
set headingWidth(width) {
this.headingWidth_ = width;
this.updateChildTracks_();
},
addTrack_: function(slices) {
var track = new TimelineSliceTrack();
track.heading = '';
track.slices = slices;
track.headingWidth = this.headingWidth_;
track.viewport = this.viewport_;
this.tracks_.push(track);
this.appendChild(track);
return track;
},
updateChildTracks_: function() {
this.detach();
this.textContent = '';
this.tracks_ = [];
if (this.thread_) {
if (this.thread_.cpuSlices) {
var track = this.addTrack_(this.thread_.cpuSlices);
track.height = '4px';
}
for (var srI = 0; srI < this.thread_.nonNestedSubRows.length; ++srI) {
this.addTrack_(this.thread_.nonNestedSubRows[srI]);
}
for (var srI = 0; srI < this.thread_.subRows.length; ++srI) {
this.addTrack_(this.thread_.subRows[srI]);
}
if (this.tracks_.length > 0) {
if (this.thread_.cpuSlices) {
this.tracks_[1].heading = this.heading_;
this.tracks_[1].tooltip = this.tooltip_;
} else {
this.tracks_[0].heading = this.heading_;
this.tracks_[0].tooltip = this.tooltip_;
}
}
}
}
};
/**
* Visualizes a TimelineCpu using a series of of TimelineSliceTracks.
* @constructor
*/
var TimelineCpuTrack = cr.ui.define(TimelineContainerTrack);
TimelineCpuTrack.prototype = {
__proto__: TimelineContainerTrack.prototype,
decorate: function() {
this.classList.add('timeline-thread-track');
},
get cpu(cpu) {
return this.cpu_;
},
set cpu(cpu) {
this.cpu_ = cpu;
this.updateChildTracks_();
},
get tooltip() {
return this.tooltip_;
},
set tooltip(value) {
this.tooltip_ = value;
this.updateChildTracks_();
},
get heading() {
return this.heading_;
},
set heading(h) {
this.heading_ = h;
this.updateChildTracks_();
},
get headingWidth() {
return this.headingWidth_;
},
set headingWidth(width) {
this.headingWidth_ = width;
this.updateChildTracks_();
},
updateChildTracks_: function() {
this.detach();
this.textContent = '';
this.tracks_ = [];
if (this.cpu_) {
var track = new TimelineSliceTrack();
track.slices = this.cpu_.slices;
track.headingWidth = this.headingWidth_;
track.viewport = this.viewport_;
this.tracks_.push(track);
this.appendChild(track);
this.tracks_[0].heading = this.heading_;
this.tracks_[0].tooltip = this.tooltip_;
}
}
};
/**
* A canvas-based track constructed. Provides the basic heading and
* invalidation-managment infrastructure. Subclasses must implement drawing
* and picking code.
* @constructor
* @extends {HTMLDivElement}
*/
var CanvasBasedTrack = cr.ui.define('div');
CanvasBasedTrack.prototype = {
__proto__: HTMLDivElement.prototype,
decorate: function() {
this.className = 'timeline-canvas-based-track';
this.slices_ = null;
this.headingDiv_ = document.createElement('div');
this.headingDiv_.className = 'timeline-canvas-based-track-title';
this.appendChild(this.headingDiv_);
this.canvasContainer_ = document.createElement('div');
this.canvasContainer_.className =
'timeline-canvas-based-track-canvas-container';
this.appendChild(this.canvasContainer_);
this.canvas_ = document.createElement('canvas');
this.canvas_.className = 'timeline-canvas-based-track-canvas';
this.canvasContainer_.appendChild(this.canvas_);
this.ctx_ = this.canvas_.getContext('2d');
},
detach: function() {
if (this.viewport_)
this.viewport_.removeEventListener('change',
this.viewportChangeBoundToThis_);
},
set headingWidth(width) {
this.headingDiv_.style.width = width;
},
get heading() {
return this.headingDiv_.textContent;
},
set heading(text) {
this.headingDiv_.textContent = text;
},
set tooltip(text) {
this.headingDiv_.title = text;
},
get viewport() {
return this.viewport_;
},
set viewport(v) {
this.viewport_ = v;
if (this.viewport_)
this.viewport_.removeEventListener('change',
this.viewportChangeBoundToThis_);
this.viewport_ = v;
if (this.viewport_) {
this.viewportChangeBoundToThis_ = this.viewportChange_.bind(this);
this.viewport_.addEventListener('change',
this.viewportChangeBoundToThis_);
}
this.invalidate();
},
viewportChange_: function() {
this.invalidate();
},
invalidate: function() {
if (this.rafPending_)
return;
webkitRequestAnimationFrame(function() {
this.rafPending_ = false;
if (!this.viewport_)
return;
if (this.canvas_.width != this.canvasContainer_.clientWidth)
this.canvas_.width = this.canvasContainer_.clientWidth;
if (this.canvas_.height != this.canvasContainer_.clientHeight)
this.canvas_.height = this.canvasContainer_.clientHeight;
this.redraw();
}.bind(this), this);
this.rafPending_ = true;
},
get firstCanvas() {
return this.canvas_;
}
};
/**
* A track that displays an array of TimelineSlice objects.
* @constructor
* @extends {CanvasBasedTrack}
*/
var TimelineSliceTrack = cr.ui.define(CanvasBasedTrack);
TimelineSliceTrack.prototype = {
__proto__: CanvasBasedTrack.prototype,
decorate: function() {
this.classList.add('timeline-slice-track');
},
get slices() {
return this.slices_;
},
set slices(slices) {
this.slices_ = slices;
this.invalidate();
},
set height(height) {
this.style.height = height;
},
redraw: function() {
var ctx = this.ctx_;
var canvasW = this.canvas_.width;
var canvasH = this.canvas_.height;
ctx.clearRect(0, 0, canvasW, canvasH);
// Culling parameters.
var vp = this.viewport_;
var pixWidth = vp.xViewVectorToWorld(1);
var viewLWorld = vp.xViewToWorld(0);
var viewRWorld = vp.xViewToWorld(canvasW);
// Draw grid without a transform because the scale
// affects line width.
if (vp.gridEnabled) {
var x = vp.gridTimebase;
ctx.beginPath();
while (x < viewRWorld) {
if (x >= viewLWorld) {
// Do conversion to viewspace here rather than on
// x to avoid precision issues.
var vx = vp.xWorldToView(x);
ctx.moveTo(vx, 0);
ctx.lineTo(vx, canvasH);
}
x += vp.gridStep;
}
ctx.strokeStyle = 'rgba(255,0,0,0.25)';
ctx.stroke();
}
// Begin rendering in world space.
ctx.save();
vp.applyTransformToCanavs(ctx);
// Slices.
var tr = new tracing.FastRectRenderer(ctx, viewLWorld, 2 * pixWidth,
2 * pixWidth, viewRWorld, pallette);
tr.setYandH(0, canvasH);
var slices = this.slices_;
for (var i = 0; i < slices.length; ++i) {
var slice = slices[i];
var x = slice.start;
// Less than 0.001 causes short events to disappear when zoomed in.
var w = Math.max(slice.duration, 0.001);
var colorId = slice.selected ?
slice.colorId + highlightIdBoost :
slice.colorId;
if (w < pixWidth)
w = pixWidth;
if (slice.duration > 0) {
tr.fillRect(x, w, colorId);
} else {
// Instant: draw a triangle. If zoomed too far, collapse
// into the FastRectRenderer.
if (pixWidth > 0.001) {
tr.fillRect(x, pixWidth, colorId);
} else {
ctx.fillStyle = pallette[colorId];
ctx.beginPath();
ctx.moveTo(x - (4 * pixWidth), canvasH);
ctx.lineTo(x, 0);
ctx.lineTo(x + (4 * pixWidth), canvasH);
ctx.closePath();
ctx.fill();
}
}
}
tr.flush();
ctx.restore();
// Labels.
if (canvasH > 8) {
ctx.textAlign = 'center';
ctx.textBaseline = 'top';
ctx.font = '10px sans-serif';
ctx.strokeStyle = 'rgb(0,0,0)';
ctx.fillStyle = 'rgb(0,0,0)';
// Don't render text until until it is 20px wide
var quickDiscardThresshold = pixWidth * 20;
for (var i = 0; i < slices.length; ++i) {
var slice = slices[i];
if (slice.duration > quickDiscardThresshold) {
var title = slice.title;
if (slice.didNotFinish) {
title += ' (Did Not Finish)';
}
var labelWidth = quickMeasureText(ctx, title) + 2;
var labelWidthWorld = pixWidth * labelWidth;
if (labelWidthWorld < slice.duration) {
var cX = vp.xWorldToView(slice.start + 0.5 * slice.duration);
ctx.fillText(title, cX, 2.5, labelWidth);
}
}
}
}
},
/**
* Picks a slice, if any, at a given location.
* @param {number} wX X location to search at, in worldspace.
* @param {number} wY Y location to search at, in offset space.
* offset space.
* @param {function():*} onHitCallback Callback to call with the slice,
* if one is found.
* @return {boolean} true if a slice was found, otherwise false.
*/
pick: function(wX, wY, onHitCallback) {
var clientRect = this.getBoundingClientRect();
if (wY < clientRect.top || wY >= clientRect.bottom)
return false;
var x = tracing.findLowIndexInSortedIntervals(this.slices_,
function(x) { return x.start; },
function(x) { return x.duration; },
wX);
if (x >= 0 && x < this.slices_.length) {
onHitCallback('slice', this, this.slices_[x]);
return true;
}
return false;
},
/**
* Finds slices intersecting the given interval.
* @param {number} loWX Lower X bound of the interval to search, in
* worldspace.
* @param {number} hiWX Upper X bound of the interval to search, in
* worldspace.
* @param {number} loY Lower Y bound of the interval to search, in
* offset space.
* @param {number} hiY Upper Y bound of the interval to search, in
* offset space.
* @param {function():*} onHitCallback Function to call for each slice
* intersecting the interval.
*/
pickRange: function(loWX, hiWX, loY, hiY, onHitCallback) {
var clientRect = this.getBoundingClientRect();
var a = Math.max(loY, clientRect.top);
var b = Math.min(hiY, clientRect.bottom);
if (a > b)
return;
var that = this;
function onPickHit(slice) {
onHitCallback('slice', that, slice);
}
tracing.iterateOverIntersectingIntervals(this.slices_,
function(x) { return x.start; },
function(x) { return x.duration; },
loWX, hiWX,
onPickHit);
},
/**
* Find the index for the given slice.
* @return {index} Index of the given slice, or undefined.
* @private
*/
indexOfSlice_: function(slice) {
var index = tracing.findLowIndexInSortedArray(this.slices_,
function(x) { return x.start; },
slice.start);
while (index < this.slices_.length &&
slice.start == this.slices_[index].start &&
slice.colorId != this.slices_[index].colorId) {
index++;
}
return index < this.slices_.length ? index : undefined;
},
/**
* Return the next slice, if any, after the given slice.
* @param {slice} The previous slice.
* @return {slice} The next slice, or undefined.
* @private
*/
pickNext: function(slice) {
var index = this.indexOfSlice_(slice);
if (index != undefined) {
if (index < this.slices_.length - 1)
index++;
else
index = undefined;
}
return index != undefined ? this.slices_[index] : undefined;
},
/**
* Return the previous slice, if any, before the given slice.
* @param {slice} A slice.
* @return {slice} The previous slice, or undefined.
*/
pickPrevious: function(slice) {
var index = this.indexOfSlice_(slice);
if (index == 0)
return undefined;
else if ((index != undefined) && (index > 0))
index--;
return index != undefined ? this.slices_[index] : undefined;
}
};
/**
* A track that displays a TimelineCounter object.
* @constructor
* @extends {CanvasBasedTrack}
*/
var TimelineCounterTrack = cr.ui.define(CanvasBasedTrack);
TimelineCounterTrack.prototype = {
__proto__: CanvasBasedTrack.prototype,
decorate: function() {
this.classList.add('timeline-counter-track');
},
get counter() {
return this.counter_;
},
set counter(counter) {
this.counter_ = counter;
this.invalidate();
},
redraw: function() {
var ctr = this.counter_;
var ctx = this.ctx_;
var canvasW = this.canvas_.width;
var canvasH = this.canvas_.height;
ctx.clearRect(0, 0, canvasW, canvasH);
// Culling parametrs.
var vp = this.viewport_;
var pixWidth = vp.xViewVectorToWorld(1);
var viewLWorld = vp.xViewToWorld(0);
var viewRWorld = vp.xViewToWorld(canvasW);
// Drop sampels that are less than skipDistancePix apart.
var skipDistancePix = 1;
var skipDistanceWorld = vp.xViewVectorToWorld(skipDistancePix);
// Begin rendering in world space.
ctx.save();
vp.applyTransformToCanavs(ctx);
// Figure out where drawing should begin.
var numSeries = ctr.numSeries;
var numSamples = ctr.numSamples;
var startIndex = tracing.findLowIndexInSortedArray(ctr.timestamps,
function() {
},
viewLWorld);
// Draw indices one by one until we fall off the viewRWorld.
var yScale = canvasH / ctr.maxTotal;
for (var seriesIndex = ctr.numSeries - 1;
seriesIndex >= 0; seriesIndex--) {
var colorId = ctr.seriesColors[seriesIndex];
ctx.fillStyle = pallette[colorId];
ctx.beginPath();
// Set iLast and xLast such that the first sample we draw is the
// startIndex sample.
var iLast = startIndex - 1;
var xLast = iLast >= 0 ? ctr.timestamps[iLast] - skipDistanceWorld : -1;
var yLastView = canvasH;
// Iterate over samples from iLast onward until we either fall off the
// viewRWorld or we run out of samples. To avoid drawing too much, after
// drawing a sample at xLast, skip subsequent samples that are less than
// skipDistanceWorld from xLast.
var hasMoved = false;
while (true) {
var i = iLast + 1;
if (i >= numSamples) {
ctx.lineTo(xLast, yLastView);
ctx.lineTo(xLast + 8 * pixWidth, yLastView);
ctx.lineTo(xLast + 8 * pixWidth, canvasH);
break;
}
var x = ctr.timestamps[i];
var y = ctr.totals[i * numSeries + seriesIndex];
var yView = canvasH - (yScale * y);
if (x > viewRWorld) {
ctx.lineTo(x, yLastView);
ctx.lineTo(x, canvasH);
break;
}
if (x - xLast < skipDistanceWorld) {
iLast = i;
continue;
}
if (!hasMoved) {
ctx.moveTo(viewLWorld, canvasH);
hasMoved = true;
}
ctx.lineTo(x, yLastView);
ctx.lineTo(x, yView);
iLast = i;
xLast = x;
yLastView = yView;
}
ctx.closePath();
ctx.fill();
}
ctx.restore();
},
/**
* Picks a slice, if any, at a given location.
* @param {number} wX X location to search at, in worldspace.
* @param {number} wY Y location to search at, in offset space.
* offset space.
* @param {function():*} onHitCallback Callback to call with the slice,
* if one is found.
* @return {boolean} true if a slice was found, otherwise false.
*/
pick: function(wX, wY, onHitCallback) {
},
/**
* Finds slices intersecting the given interval.
* @param {number} loWX Lower X bound of the interval to search, in
* worldspace.
* @param {number} hiWX Upper X bound of the interval to search, in
* worldspace.
* @param {number} loY Lower Y bound of the interval to search, in
* offset space.
* @param {number} hiY Upper Y bound of the interval to search, in
* offset space.
* @param {function():*} onHitCallback Function to call for each slice
* intersecting the interval.
*/
pickRange: function(loWX, hiWX, loY, hiY, onHitCallback) {
}
};
return {
TimelineCounterTrack: TimelineCounterTrack,
TimelineSliceTrack: TimelineSliceTrack,
TimelineThreadTrack: TimelineThreadTrack,
TimelineCpuTrack: TimelineCpuTrack
};
});
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/**
* @fileoverview TimelineView visualizes TRACE_EVENT events using the
* tracing.Timeline component.
*/
cr.define('tracing', function() {
function tsRound(ts) {
return Math.round(ts * 1000.0) / 1000.0;
}
function getPadding(text, width) {
width = width || 0;
if (typeof text != 'string')
text = String(text);
if (text.length >= width)
return '';
var pad = '';
for (var i = 0; i < width - text.length; i++)
pad += ' ';
return pad;
}
function leftAlign(text, width) {
return text + getPadding(text, width);
}
function rightAlign(text, width) {
return getPadding(text, width) + text;
}
/**
* TimelineView
* @constructor
* @extends {HTMLDivElement}
*/
TimelineView = cr.ui.define('div');
TimelineView.prototype = {
__proto__: HTMLDivElement.prototype,
decorate: function() {
this.classList.add('timeline-view');
this.timelineContainer_ = document.createElement('div');
this.timelineContainer_.className = 'timeline-container';
var summaryContainer_ = document.createElement('div');
summaryContainer_.className = 'summary-container';
this.summaryEl_ = document.createElement('pre');
this.summaryEl_.className = 'summary';
summaryContainer_.appendChild(this.summaryEl_);
this.appendChild(this.timelineContainer_);
this.appendChild(summaryContainer_);
this.onSelectionChangedBoundToThis_ = this.onSelectionChanged_.bind(this);
},
set traceData(traceData) {
this.model = new tracing.TimelineModel(traceData);
},
get model(model) {
return this.timelineModel_;
},
set model(model) {
this.timelineModel_ = model;
// remove old timeline
this.timelineContainer_.textContent = '';
// create new timeline if needed
if (this.timelineModel_.minTimestamp !== undefined) {
if (this.timeline_)
this.timeline_.detach();
this.timeline_ = new tracing.Timeline();
this.timeline_.model = this.timelineModel_;
this.timeline_.focusElement = this.parentElement;
this.timelineContainer_.appendChild(this.timeline_);
this.timeline_.addEventListener('selectionChange',
this.onSelectionChangedBoundToThis_);
this.onSelectionChanged_();
} else {
this.timeline_ = null;
}
},
get timeline() {
return this.timeline_;
},
onSelectionChanged_: function(e) {
var timeline = this.timeline_;
var selection = timeline.selection;
if (!selection.length) {
var oldScrollTop = this.timelineContainer_.scrollTop;
this.summaryEl_.textContent = timeline.keyHelp;
this.timelineContainer_.scrollTop = oldScrollTop;
return;
}
var text = '';
if (selection.length == 1) {
var c0Width = 14;
var slice = selection[0].slice;
text = 'Selected item:\n';
text += leftAlign('Title', c0Width) + ': ' + slice.title + '\n';
text += leftAlign('Start', c0Width) + ': ' +
tsRound(slice.start) + ' ms\n';
text += leftAlign('Duration', c0Width) + ': ' +
tsRound(slice.duration) + ' ms\n';
if (slice.durationInUserTime)
text += leftAlign('Duration (U)', c0Width) + ': ' +
tsRound(slice.durationInUserTime) + ' ms\n';
var n = 0;
for (var argName in slice.args) {
n += 1;
}
if (n > 0) {
text += leftAlign('Args', c0Width) + ':\n';
for (var argName in slice.args) {
var argVal = slice.args[argName];
text += leftAlign(' ' + argName, c0Width) + ': ' + argVal + '\n';
}
}
} else {
var c0Width = 55;
var c1Width = 12;
var c2Width = 5;
text = 'Selection summary:\n';
var tsLo = Math.min.apply(Math, selection.map(
function(s) {return s.slice.start;}));
var tsHi = Math.max.apply(Math, selection.map(
function(s) {return s.slice.end;}));
// compute total selection duration
var titles = selection.map(function(i) { return i.slice.title; });
var slicesByTitle = {};
for (var i = 0; i < selection.length; i++) {
var slice = selection[i].slice;
if (!slicesByTitle[slice.title])
slicesByTitle[slice.title] = {
slices: []
};
slicesByTitle[slice.title].slices.push(slice);
}
var totalDuration = 0;
for (var sliceGroupTitle in slicesByTitle) {
var sliceGroup = slicesByTitle[sliceGroupTitle];
var duration = 0;
for (i = 0; i < sliceGroup.slices.length; i++)
duration += sliceGroup.slices[i].duration;
totalDuration += duration;
text += ' ' +
leftAlign(sliceGroupTitle, c0Width) + ': ' +
rightAlign(tsRound(duration) + 'ms', c1Width) + ' ' +
rightAlign(String(sliceGroup.slices.length), c2Width) +
' occurrences' + '\n';
}
text += leftAlign('*Totals', c0Width) + ' : ' +
rightAlign(tsRound(totalDuration) + 'ms', c1Width) + ' ' +
rightAlign(String(selection.length), c2Width) + ' occurrences' +
'\n';
text += '\n';
text += leftAlign('Selection start', c0Width) + ' : ' +
rightAlign(tsRound(tsLo) + 'ms', c1Width) +
'\n';
text += leftAlign('Selection extent', c0Width) + ' : ' +
rightAlign(tsRound(tsHi - tsLo) + 'ms', c1Width) +
'\n';
}
// done
var oldScrollTop = this.timelineContainer_.scrollTop;
this.summaryEl_.textContent = text;
this.timelineContainer_.scrollTop = oldScrollTop;
}
};
return {
TimelineView: TimelineView
};
});
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/**
* @fileoverview Provides a mechanism for drawing massive numbers of
* colored rectangles into a canvas in an efficient manner, provided
* they are drawn left to right with fixed y and height throughout.
*
* The basic idea used here is to fuse subpixel rectangles together so that
* we never issue a canvas fillRect for them. It turns out Javascript can
* do this quite efficiently, compared to asking Canvas2D to do the same.
*
* A few extra things are done by this class in the name of speed:
* - Viewport culling: off-viewport rectangles are discarded.
*
* - The actual discarding operation is done in world space,
* e.g. pre-transform.
*
* - Rather than expending compute cycles trying to figure out an average
* color for fused rectangles from css strings, you instead draw using
* palletized colors. The fused rect is the max pallete index encountered.
*
* Make sure to flush the trackRenderer before finishing drawing in order
* to commit any queued drawing operations.
*/
cr.define('tracing', function() {
/**
* Creates a fast rect renderer with a specific set of culling rules
* and color pallette.
* @param {GraphicsContext2D} ctx Canvas2D drawing context.
* @param {number} vpLeft The leftmost visible part of the drawing viewport.
* @param {number} minRectSize Only rectangles with width < minRectSize are
* considered for merging.
* @param {number} maxMergeDist Controls how many successive small rectangles
* can be merged together before issuing a rectangle.
* @param {number} vpRight The rightmost visible part of the viewport.
* @param {Array} pallette The color pallete for drawing. Pallette slots
* should map to valid Canvas fillStyle strings.
*
* @constructor
*/
function FastRectRenderer(ctx, vpLeft, minRectSize, maxMergeDist, vpRight,
pallette) {
this.ctx_ = ctx;
this.vpLeft_ = vpLeft;
this.minRectSize_ = minRectSize;
this.maxMergeDist_ = maxMergeDist;
this.vpRight_ = vpRight;
this.pallette_ = pallette;
}
FastRectRenderer.prototype = {
y_: 0,
h_: 0,
merging_: false,
mergeStartX_: 0,
mergeCurRight_: 0,
/**
* Changes the y position and height for subsequent fillRect
* calls. x and width are specifieid on the fillRect calls.
*/
setYandH: function(y, h) {
this.flush();
this.y_ = y;
this.h_ = h;
},
/**
* Fills rectangle at the specified location, if visible. If the
* rectangle is subpixel, it will be merged with adjacent rectangles.
* The drawing operation may not take effect until flush is called.
* @param {number} colorId The color of this rectangle, as an index
* in the renderer's color pallete.
*/
fillRect: function(x, w, colorId) {
var r = x + w;
if (r < this.vpLeft_ || x > this.vpRight_) return;
if (w < this.minRectSize_) {
if (r - this.mergeStartX_ > this.maxMergeDist_)
this.flush();
if (!this.merging_) {
this.merging_ = true;
this.mergeStartX_ = x;
this.mergeCurRight_ = r;
this.mergedColorId = colorId;
} else {
this.mergeCurRight_ = r;
this.mergedColorId = Math.max(this.mergedColorId, colorId);
}
} else {
if (this.merging_)
this.flush();
this.ctx_.fillStyle = this.pallette_[colorId];
this.ctx_.fillRect(x, this.y_, w, this.h_);
}
},
/**
* Commits any pending fillRect operations to the underlying graphics
* context.
*/
flush: function() {
if (this.merging_) {
this.ctx_.fillStyle = this.pallette_[this.mergedColorId];
this.ctx_.fillRect(this.mergeStartX_, this.y_,
this.mergeCurRight_ - this.mergeStartX_, this.h_);
this.merging_ = false;
}
}
};
return {
FastRectRenderer: FastRectRenderer
};
});
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/**
* @fileoverview Helper functions for use in tracing tests.
*/
/**
* goog.testing.assertion's assertEquals tweaked to do equality-to-a-constant.
* @param {*} a First value.
* @param {*} b Second value.
*/
function assertAlmostEquals(a, b) {
_validateArguments(2, arguments);
var var1 = nonCommentArg(1, 2, arguments);
var var2 = nonCommentArg(2, 2, arguments);
_assert(commentArg(2, arguments), Math.abs(var1 - var2) < 0.00001,
'Expected ' + _displayStringForValue(var1) + ' but was ' +
_displayStringForValue(var2));
}
cr.define('test_utils', function() {
function getAsync(url, cb) {
var req = new XMLHttpRequest();
req.open('GET', url, true);
req.onreadystatechange = function(aEvt) {
if (req.readyState == 4) {
window.setTimeout(function() {
if (req.status == 200) {
cb(req.responseText);
} else {
console.log('Failed to load ' + url);
}
}, 0);
}
};
req.send(null);
}
return {
getAsync: getAsync
};
});