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-/*
- * Copyright (C) 2010 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-/**
- * @fileoverview Profiler processor is used to process log file produced
- * by V8 and produce an internal profile representation which is used
- * for building profile views in "Profiles" tab.
- */
-
-
-/**
- * Creates a Profile View builder object compatible with WebKit Profiler UI.
- *
- * @param {number} samplingRate Number of ms between profiler ticks.
- * @constructor
- */
-devtools.profiler.WebKitViewBuilder = function(samplingRate)
-{
- devtools.profiler.ViewBuilder.call(this, samplingRate);
-};
-devtools.profiler.WebKitViewBuilder.prototype.__proto__ = devtools.profiler.ViewBuilder.prototype;
-
-
-/**
- * @override
- */
-devtools.profiler.WebKitViewBuilder.prototype.createViewNode = function(funcName, totalTime, selfTime, head)
-{
- return new devtools.profiler.WebKitViewNode(funcName, totalTime, selfTime, head);
-};
-
-
-/**
- * Constructs a Profile View node object for displaying in WebKit Profiler UI.
- *
- * @param {string} internalFuncName A fully qualified function name.
- * @param {number} totalTime Amount of time that application spent in the
- * corresponding function and its descendants (not that depending on
- * profile they can be either callees or callers.)
- * @param {number} selfTime Amount of time that application spent in the
- * corresponding function only.
- * @param {devtools.profiler.ProfileView.Node} head Profile view head.
- * @constructor
- */
-devtools.profiler.WebKitViewNode = function(internalFuncName, totalTime, selfTime, head)
-{
- devtools.profiler.ProfileView.Node.call(this, internalFuncName, totalTime, selfTime, head);
- this.initFuncInfo_();
- this.callUID = internalFuncName;
-};
-devtools.profiler.WebKitViewNode.prototype.__proto__ = devtools.profiler.ProfileView.Node.prototype;
-
-
-/**
- * RegEx for stripping V8's prefixes of compiled functions.
- */
-devtools.profiler.WebKitViewNode.FUNC_NAME_STRIP_RE = /^(?:LazyCompile|Function|Callback): (.*)$/;
-
-
-/**
- * RegEx for extracting script source URL and line number.
- */
-devtools.profiler.WebKitViewNode.FUNC_NAME_PARSE_RE = /^((?:get | set )?[^ ]+) (.*):(\d+)( \{\d+\})?$/;
-
-
-/**
- * Inits "functionName", "url", and "lineNumber" fields using "internalFuncName"
- * field.
- * @private
- */
-devtools.profiler.WebKitViewNode.prototype.initFuncInfo_ = function()
-{
- var nodeAlias = devtools.profiler.WebKitViewNode;
- this.functionName = this.internalFuncName;
-
- var strippedName = nodeAlias.FUNC_NAME_STRIP_RE.exec(this.functionName);
- if (strippedName)
- this.functionName = strippedName[1];
-
- var parsedName = nodeAlias.FUNC_NAME_PARSE_RE.exec(this.functionName);
- if (parsedName) {
- this.functionName = parsedName[1];
- if (parsedName[4])
- this.functionName += parsedName[4];
- this.url = parsedName[2];
- this.lineNumber = parsedName[3];
- } else {
- this.url = '';
- this.lineNumber = 0;
- }
-};
-
-
-/**
- * Ancestor of a profile object that leaves out only JS-related functions.
- * @constructor
- */
-devtools.profiler.JsProfile = function()
-{
- devtools.profiler.Profile.call(this);
-};
-devtools.profiler.JsProfile.prototype.__proto__ = devtools.profiler.Profile.prototype;
-
-
-/**
- * RegExp that leaves only non-native JS functions.
- * @type {RegExp}
- */
-devtools.profiler.JsProfile.JS_NON_NATIVE_RE = new RegExp(
- "^" +
- "(?:Callback:)|" +
- "(?:Script: (?!native))|" +
- "(?:(?:LazyCompile|Function): [^ ]*(?: (?!native )[^ ]+:\\d+)?$)");
-
-
-/**
- * @override
- */
-devtools.profiler.JsProfile.prototype.skipThisFunction = function(name)
-{
- return !devtools.profiler.JsProfile.JS_NON_NATIVE_RE.test(name);
-};
-
-
-/**
- * Profiler processor. Consumes profiler log and builds profile views.
- * FIXME: change field naming style to use trailing underscore.
- *
- * @param {function(devtools.profiler.ProfileView)} newProfileCallback Callback
- * that receives a new processed profile.
- * @constructor
- */
-devtools.profiler.Processor = function()
-{
- var dispatches = {
- "code-creation": {
- parsers: [null, this.createAddressParser("code"), parseInt, null],
- processor: this.processCodeCreation_, backrefs: true,
- needsProfile: true },
- "code-move": { parsers: [this.createAddressParser("code"),
- this.createAddressParser("code-move-to")],
- processor: this.processCodeMove_, backrefs: true,
- needsProfile: true },
- "code-delete": { parsers: [this.createAddressParser("code")],
- processor: this.processCodeDelete_, backrefs: true,
- needsProfile: true },
- "function-creation": { parsers: [this.createAddressParser("code"),
- this.createAddressParser("function-obj")],
- processor: this.processFunctionCreation_, backrefs: true },
- "function-move": { parsers: [this.createAddressParser("code"),
- this.createAddressParser("code-move-to")],
- processor: this.processFunctionMove_, backrefs: true },
- "function-delete": { parsers: [this.createAddressParser("code")],
- processor: this.processFunctionDelete_, backrefs: true },
- "tick": { parsers: [this.createAddressParser("code"),
- this.createAddressParser("stack"), parseInt, "var-args"],
- processor: this.processTick_, backrefs: true, needProfile: true },
- "profiler": { parsers: [null, "var-args"],
- processor: this.processProfiler_, needsProfile: false },
- "heap-sample-begin": { parsers: [null, null, parseInt],
- processor: this.processHeapSampleBegin_ },
- "heap-sample-stats": { parsers: [null, null, parseInt, parseInt],
- processor: this.processHeapSampleStats_ },
- "heap-sample-item": { parsers: [null, parseInt, parseInt],
- processor: this.processHeapSampleItem_ },
- "heap-js-cons-item": { parsers: [null, parseInt, parseInt],
- processor: this.processHeapJsConsItem_ },
- "heap-js-ret-item": { parsers: [null, "var-args"],
- processor: this.processHeapJsRetItem_ },
- "heap-sample-end": { parsers: [null, null],
- processor: this.processHeapSampleEnd_ },
- // Not used in DevTools Profiler.
- "shared-library": null,
- // Obsolete row types.
- "code-allocate": null,
- "begin-code-region": null,
- "end-code-region": null};
-
- if (devtools.profiler.Profile.VERSION === 2) {
- dispatches["tick"] = { parsers: [this.createAddressParser("code"),
- this.createAddressParser("stack"),
- this.createAddressParser("func"), parseInt, "var-args"],
- processor: this.processTickV2_, backrefs: true };
- }
-
- devtools.profiler.LogReader.call(this, dispatches);
-
- /**
- * Callback that is called when a new profile is encountered in the log.
- * @type {function()}
- */
- this.startedProfileProcessing_ = null;
-
- /**
- * Callback that is called periodically to display processing status.
- * @type {function()}
- */
- this.profileProcessingStatus_ = null;
-
- /**
- * Callback that is called when a profile has been processed and is ready
- * to be shown.
- * @type {function(devtools.profiler.ProfileView)}
- */
- this.finishedProfileProcessing_ = null;
-
- /**
- * The current profile.
- * @type {devtools.profiler.JsProfile}
- */
- this.currentProfile_ = null;
-
- /**
- * Builder of profile views. Created during "profiler,begin" event processing.
- * @type {devtools.profiler.WebKitViewBuilder}
- */
- this.viewBuilder_ = null;
-
- /**
- * Next profile id.
- * @type {number}
- */
- this.profileId_ = 1;
-
- /**
- * Counter for processed ticks.
- * @type {number}
- */
- this.ticksCount_ = 0;
-
- /**
- * Interval id for updating processing status.
- * @type {number}
- */
- this.processingInterval_ = null;
-
- /**
- * The current heap snapshot.
- * @type {string}
- */
- this.currentHeapSnapshot_ = null;
-
- /**
- * Next heap snapshot id.
- * @type {number}
- */
- this.heapSnapshotId_ = 1;
-};
-devtools.profiler.Processor.prototype.__proto__ = devtools.profiler.LogReader.prototype;
-
-
-/**
- * @override
- */
-devtools.profiler.Processor.prototype.printError = function(str)
-{
- debugPrint(str);
-};
-
-
-/**
- * @override
- */
-devtools.profiler.Processor.prototype.skipDispatch = function(dispatch)
-{
- return dispatch.needsProfile && this.currentProfile_ === null;
-};
-
-
-/**
- * Sets profile processing callbacks.
- *
- * @param {function()} started Started processing callback.
- * @param {function(devtools.profiler.ProfileView)} finished Finished
- * processing callback.
- */
-devtools.profiler.Processor.prototype.setCallbacks = function(started, processing, finished)
-{
- this.startedProfileProcessing_ = started;
- this.profileProcessingStatus_ = processing;
- this.finishedProfileProcessing_ = finished;
-};
-
-
-/**
- * An address for the fake "(program)" entry. WebKit's visualisation
- * has assumptions on how the top of the call tree should look like,
- * and we need to add a fake entry as the topmost function. This
- * address is chosen because it's the end address of the first memory
- * page, which is never used for code or data, but only as a guard
- * page for catching AV errors.
- *
- * @type {number}
- */
-devtools.profiler.Processor.PROGRAM_ENTRY = 0xffff;
-/**
- * @type {string}
- */
-devtools.profiler.Processor.PROGRAM_ENTRY_STR = "0xffff";
-
-
-/**
- * Sets new profile callback.
- * @param {function(devtools.profiler.ProfileView)} callback Callback function.
- */
-devtools.profiler.Processor.prototype.setNewProfileCallback = function(callback)
-{
- this.newProfileCallback_ = callback;
-};
-
-
-devtools.profiler.Processor.prototype.processProfiler_ = function(state, params)
-{
- switch (state) {
- case "resume":
- if (this.currentProfile_ === null) {
- this.currentProfile_ = new devtools.profiler.JsProfile();
- // see the comment for devtools.profiler.Processor.PROGRAM_ENTRY
- this.currentProfile_.addCode("Function", "(program)", devtools.profiler.Processor.PROGRAM_ENTRY, 1);
- if (this.startedProfileProcessing_)
- this.startedProfileProcessing_();
- this.ticksCount_ = 0;
- var self = this;
- if (this.profileProcessingStatus_) {
- this.processingInterval_ = window.setInterval(
- function() { self.profileProcessingStatus_(self.ticksCount_); },
- 1000);
- }
- }
- break;
- case "pause":
- if (this.currentProfile_ !== null) {
- window.clearInterval(this.processingInterval_);
- this.processingInterval_ = null;
- if (this.finishedProfileProcessing_)
- this.finishedProfileProcessing_(this.createProfileForView());
- this.currentProfile_ = null;
- }
- break;
- case "begin":
- var samplingRate = NaN;
- if (params.length > 0)
- samplingRate = parseInt(params[0]);
- if (isNaN(samplingRate))
- samplingRate = 1;
- this.viewBuilder_ = new devtools.profiler.WebKitViewBuilder(samplingRate);
- break;
- // These events are valid but aren't used.
- case "compression":
- case "end": break;
- default:
- throw new Error("unknown profiler state: " + state);
- }
-};
-
-
-devtools.profiler.Processor.prototype.processCodeCreation_ = function(type, start, size, name)
-{
- this.currentProfile_.addCode(this.expandAlias(type), name, start, size);
-};
-
-
-devtools.profiler.Processor.prototype.processCodeMove_ = function(from, to)
-{
- this.currentProfile_.moveCode(from, to);
-};
-
-
-devtools.profiler.Processor.prototype.processCodeDelete_ = function(start)
-{
- this.currentProfile_.deleteCode(start);
-};
-
-
-devtools.profiler.Processor.prototype.processFunctionCreation_ = function(functionAddr, codeAddr)
-{
- this.currentProfile_.addCodeAlias(functionAddr, codeAddr);
-};
-
-
-devtools.profiler.Processor.prototype.processFunctionMove_ = function(from, to)
-{
- this.currentProfile_.safeMoveDynamicCode(from, to);
-};
-
-
-devtools.profiler.Processor.prototype.processFunctionDelete_ = function(start)
-{
- this.currentProfile_.safeDeleteDynamicCode(start);
-};
-
-
-// TODO(mnaganov): Remove after next V8 roll.
-devtools.profiler.Processor.prototype.processTick_ = function(pc, sp, vmState, stack)
-{
- // see the comment for devtools.profiler.Processor.PROGRAM_ENTRY
- stack.push(devtools.profiler.Processor.PROGRAM_ENTRY_STR);
- this.currentProfile_.recordTick(this.processStack(pc, stack));
- this.ticksCount_++;
-};
-
-
-devtools.profiler.Processor.prototype.processTickV2_ = function(pc, sp, func, vmState, stack)
-{
- // see the comment for devtools.profiler.Processor.PROGRAM_ENTRY
- stack.push(devtools.profiler.Processor.PROGRAM_ENTRY_STR);
-
-
- if (func) {
- var funcEntry = this.currentProfile_.findEntry(func);
- if (!funcEntry || !funcEntry.isJSFunction || !funcEntry.isJSFunction())
- func = 0;
- else {
- var currEntry = this.currentProfile_.findEntry(pc);
- if (!currEntry || !currEntry.isJSFunction || currEntry.isJSFunction()) {
- func = 0;
- }
- }
- }
-
- this.currentProfile_.recordTick(this.processStack(pc, func, stack));
- this.ticksCount_++;
-};
-
-
-devtools.profiler.Processor.prototype.processHeapSampleBegin_ = function(space, state, ticks)
-{
- if (space !== "Heap") return;
- this.currentHeapSnapshot_ = {
- number: this.heapSnapshotId_++,
- entries: {},
- clusters: {},
- lowlevels: {},
- ticks: ticks
- };
-};
-
-
-devtools.profiler.Processor.prototype.processHeapSampleStats_ = function(space, state, capacity, used)
-{
- if (space !== "Heap") return;
-};
-
-
-devtools.profiler.Processor.prototype.processHeapSampleItem_ = function(item, number, size)
-{
- if (!this.currentHeapSnapshot_) return;
- this.currentHeapSnapshot_.lowlevels[item] = {
- type: item, count: number, size: size
- };
-};
-
-
-devtools.profiler.Processor.prototype.processHeapJsConsItem_ = function(item, number, size)
-{
- if (!this.currentHeapSnapshot_) return;
- this.currentHeapSnapshot_.entries[item] = {
- cons: item, count: number, size: size, retainers: {}
- };
-};
-
-
-devtools.profiler.Processor.prototype.processHeapJsRetItem_ = function(item, retainersArray)
-{
- if (!this.currentHeapSnapshot_) return;
- var rawRetainers = {};
- for (var i = 0, n = retainersArray.length; i < n; ++i) {
- var entry = retainersArray[i].split(";");
- rawRetainers[entry[0]] = parseInt(entry[1], 10);
- }
-
- function mergeRetainers(entry) {
- for (var rawRetainer in rawRetainers) {
- var consName = rawRetainer.indexOf(":") !== -1 ? rawRetainer.split(":")[0] : rawRetainer;
- if (!(consName in entry.retainers))
- entry.retainers[consName] = { cons: consName, count: 0, clusters: {} };
- var retainer = entry.retainers[consName];
- retainer.count += rawRetainers[rawRetainer];
- if (consName !== rawRetainer)
- retainer.clusters[rawRetainer] = true;
- }
- }
-
- if (item.indexOf(":") !== -1) {
- // Array, Function, or Object instances cluster case.
- if (!(item in this.currentHeapSnapshot_.clusters)) {
- this.currentHeapSnapshot_.clusters[item] = {
- cons: item, retainers: {}
- };
- }
- mergeRetainers(this.currentHeapSnapshot_.clusters[item]);
- item = item.split(":")[0];
- }
- mergeRetainers(this.currentHeapSnapshot_.entries[item]);
-};
-
-
-devtools.profiler.Processor.prototype.processHeapSampleEnd_ = function(space, state)
-{
- if (space !== "Heap") return;
- var snapshot = this.currentHeapSnapshot_;
- this.currentHeapSnapshot_ = null;
- WebInspector.panels.profiles.addSnapshot(snapshot);
-};
-
-
-/**
- * Creates a profile for further displaying in ProfileView.
- */
-devtools.profiler.Processor.prototype.createProfileForView = function()
-{
- var profile = this.viewBuilder_.buildView(this.currentProfile_.getTopDownProfile());
- profile.uid = this.profileId_++;
- profile.title = UserInitiatedProfileName + "." + profile.uid;
- return profile;
-};