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