зеркало из https://github.com/mozilla/gecko-dev.git
84 строки
2.9 KiB
JavaScript
84 строки
2.9 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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const protocol = require("devtools/shared/protocol");
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const { Memory } = require("devtools/server/performance/memory");
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const { actorBridgeWithSpec } = require("devtools/server/actors/common");
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const { memorySpec } = require("devtools/shared/specs/memory");
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loader.lazyRequireGetter(this, "events", "sdk/event/core");
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loader.lazyRequireGetter(this, "StackFrameCache",
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"devtools/server/actors/utils/stack", true);
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/**
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* An actor that returns memory usage data for its parent actor's window.
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* A tab-scoped instance of this actor will measure the memory footprint of its
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* parent tab. A global-scoped instance however, will measure the memory
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* footprint of the chrome window referenced by the root actor.
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*
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* This actor wraps the Memory module at devtools/server/performance/memory.js
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* and provides RDP definitions.
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*
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* @see devtools/server/performance/memory.js for documentation.
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*/
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exports.MemoryActor = protocol.ActorClassWithSpec(memorySpec, {
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initialize: function (conn, parent, frameCache = new StackFrameCache()) {
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protocol.Actor.prototype.initialize.call(this, conn);
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this._onGarbageCollection = this._onGarbageCollection.bind(this);
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this._onAllocations = this._onAllocations.bind(this);
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this.bridge = new Memory(parent, frameCache);
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this.bridge.on("garbage-collection", this._onGarbageCollection);
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this.bridge.on("allocations", this._onAllocations);
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},
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destroy: function () {
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this.bridge.off("garbage-collection", this._onGarbageCollection);
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this.bridge.off("allocations", this._onAllocations);
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this.bridge.destroy();
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protocol.Actor.prototype.destroy.call(this);
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},
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attach: actorBridgeWithSpec("attach"),
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detach: actorBridgeWithSpec("detach"),
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getState: actorBridgeWithSpec("getState"),
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saveHeapSnapshot: function (boundaries) {
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return this.bridge.saveHeapSnapshot(boundaries);
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},
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takeCensus: actorBridgeWithSpec("takeCensus"),
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startRecordingAllocations: actorBridgeWithSpec("startRecordingAllocations"),
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stopRecordingAllocations: actorBridgeWithSpec("stopRecordingAllocations"),
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getAllocationsSettings: actorBridgeWithSpec("getAllocationsSettings"),
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getAllocations: actorBridgeWithSpec("getAllocations"),
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forceGarbageCollection: actorBridgeWithSpec("forceGarbageCollection"),
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forceCycleCollection: actorBridgeWithSpec("forceCycleCollection"),
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measure: actorBridgeWithSpec("measure"),
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residentUnique: actorBridgeWithSpec("residentUnique"),
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_onGarbageCollection: function (data) {
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if (this.conn.transport) {
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events.emit(this, "garbage-collection", data);
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}
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},
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_onAllocations: function (data) {
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if (this.conn.transport) {
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events.emit(this, "allocations", data);
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}
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},
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});
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