blob: a84850e76c73bd129aa226651497e0f8e81774b9 [file] [log] [blame]
/*
* 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.
*/
WI.MemoryManager = class MemoryManager extends WI.Object
{
constructor()
{
super();
this._enabled = false;
}
// Agent
get domains() { return ["Memory"]; }
activateExtraDomain(domain)
{
console.assert(domain === "Memory");
for (let target of WI.targets)
this.initializeTarget(target);
}
// Target
initializeTarget(target)
{
if (!this._enabled)
return;
if (target.MemoryAgent)
target.MemoryAgent.enable();
}
// Public
enable()
{
if (this._enabled)
return;
this._enabled = true;
for (let target of WI.targets)
this.initializeTarget(target);
}
disable()
{
if (!this._enabled)
return;
for (let target of WI.targets) {
if (target.MemoryAgent)
target.MemoryAgent.disable();
}
this._enabled = false;
}
// MemoryObserver
memoryPressure(timestamp, protocolSeverity)
{
if (!this._enabled)
return;
let memoryPressureEvent = WI.MemoryPressureEvent.fromPayload(timestamp, protocolSeverity);
this.dispatchEventToListeners(WI.MemoryManager.Event.MemoryPressure, {memoryPressureEvent});
}
};
WI.MemoryManager.Event = {
MemoryPressure: "memory-manager-memory-pressure",
};