зеркало из https://github.com/mozilla/gecko-dev.git
53 строки
1.8 KiB
C++
53 строки
1.8 KiB
C++
/* -*- Mode: C++; tab-width: 50; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* 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/. */
|
|
|
|
#include "LoadManager.h"
|
|
#include "LoadManagerFactory.h"
|
|
#include "MainThreadUtils.h"
|
|
#include "nsIObserverService.h"
|
|
|
|
#include "mozilla/Preferences.h"
|
|
|
|
namespace mozilla {
|
|
|
|
// Assume stored in an nsAutoPtr<>
|
|
LoadManager *
|
|
LoadManagerBuild(void)
|
|
{
|
|
return new LoadManager(LoadManagerSingleton::Get());
|
|
}
|
|
|
|
/* static */ LoadManagerSingleton*
|
|
LoadManagerSingleton::Get() {
|
|
if (!sSingleton) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
bool loadEncoderOnly =
|
|
mozilla::Preferences::GetBool("media.navigator.load_adapt.encoder_only", true);
|
|
int loadMeasurementInterval =
|
|
mozilla::Preferences::GetInt("media.navigator.load_adapt.measure_interval", 1000);
|
|
int averagingSeconds =
|
|
mozilla::Preferences::GetInt("media.navigator.load_adapt.avg_seconds", 3);
|
|
float highLoadThreshold =
|
|
mozilla::Preferences::GetFloat("media.navigator.load_adapt.high_load", 0.90f);
|
|
float lowLoadThreshold =
|
|
mozilla::Preferences::GetFloat("media.navigator.load_adapt.low_load", 0.40f);
|
|
|
|
sSingleton = new LoadManagerSingleton(loadEncoderOnly,
|
|
loadMeasurementInterval,
|
|
averagingSeconds,
|
|
highLoadThreshold,
|
|
lowLoadThreshold);
|
|
|
|
nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
|
|
if (obs) {
|
|
obs->AddObserver(sSingleton, "xpcom-shutdown", false);
|
|
}
|
|
}
|
|
return sSingleton;
|
|
}
|
|
|
|
}; // namespace
|