| /* |
| * Copyright (C) 2016 Apple 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: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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. |
| */ |
| |
| importScripts(...[ |
| "HeapSnapshot.js" |
| ]); |
| |
| HeapSnapshotWorker = class HeapSnapshotWorker |
| { |
| constructor() |
| { |
| this._nextObjectId = 1; |
| this._objects = new Map; |
| this._snapshots = []; |
| |
| self.addEventListener("message", this._handleMessage.bind(this)); |
| } |
| |
| // Actions |
| |
| clearSnapshots() |
| { |
| this._objects.clear(); |
| |
| this._snapshots = []; |
| } |
| |
| createSnapshot(snapshotString, title, imported) |
| { |
| let objectId = this._nextObjectId++; |
| let snapshot = new HeapSnapshot(objectId, snapshotString, title, imported); |
| this._objects.set(objectId, snapshot); |
| |
| if (!imported) { |
| this._snapshots.push(snapshot); |
| |
| if (this._snapshots.length > 1) { |
| setTimeout(() => { |
| let collectionData = snapshot.updateDeadNodesAndGatherCollectionData(this._snapshots); |
| if (!collectionData || !collectionData.affectedSnapshots.length) |
| return; |
| this.sendEvent("HeapSnapshot.CollectionEvent", collectionData); |
| }, 0); |
| } |
| } |
| |
| return {objectId, snapshot: snapshot.serialize()}; |
| } |
| |
| createSnapshotDiff(objectId1, objectId2) |
| { |
| let snapshot1 = this._objects.get(objectId1); |
| let snapshot2 = this._objects.get(objectId2); |
| |
| console.assert(snapshot1 instanceof HeapSnapshot); |
| console.assert(snapshot2 instanceof HeapSnapshot); |
| |
| let objectId = this._nextObjectId++; |
| let snapshotDiff = new HeapSnapshotDiff(objectId, snapshot1, snapshot2); |
| this._objects.set(objectId, snapshotDiff); |
| return {objectId, snapshotDiff: snapshotDiff.serialize()}; |
| } |
| |
| // Public |
| |
| sendEvent(eventName, eventData) |
| { |
| self.postMessage({eventName, eventData}); |
| } |
| |
| // Private |
| |
| _handleMessage(event) |
| { |
| let data = event.data; |
| |
| // Action. |
| if (data.actionName) { |
| let result = this[data.actionName](...data.actionArguments); |
| self.postMessage({callId: data.callId, result}); |
| return; |
| } |
| |
| // Method. |
| if (data.methodName) { |
| console.assert(data.objectId, "Must have an objectId to call the method on"); |
| let object = this._objects.get(data.objectId); |
| if (!object) |
| self.postMessage({callId: data.callId, error: "No such object."}); |
| else { |
| let result = object[data.methodName](...data.methodArguments); |
| self.postMessage({callId: data.callId, result}); |
| } |
| return; |
| } |
| |
| console.error("Unexpected HeapSnapshotWorker message", data); |
| } |
| }; |
| |
| self.heapSnapshotWorker = new HeapSnapshotWorker; |