зеркало из https://github.com/mozilla/gecko-dev.git
102 строки
2.1 KiB
C++
102 строки
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
* vim: sw=2 ts=8 et :
|
|
*/
|
|
/* 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 "CompositorLRU.h"
|
|
|
|
#include "mozilla/ClearOnShutdown.h"
|
|
#include "mozilla/DebugOnly.h"
|
|
#include "mozilla/Preferences.h"
|
|
#include "mozilla/unused.h"
|
|
|
|
#include "CompositorBridgeParent.h"
|
|
|
|
namespace mozilla {
|
|
namespace layers {
|
|
|
|
mozilla::StaticRefPtr<CompositorLRU> CompositorLRU::sSingleton;
|
|
|
|
void
|
|
CompositorLRU::Init()
|
|
{
|
|
Unused << GetSingleton();
|
|
}
|
|
|
|
CompositorLRU*
|
|
CompositorLRU::GetSingleton()
|
|
{
|
|
if (sSingleton) {
|
|
return sSingleton;
|
|
}
|
|
sSingleton = new CompositorLRU();
|
|
ClearOnShutdown(&sSingleton);
|
|
|
|
return sSingleton;
|
|
}
|
|
|
|
CompositorLRU::CompositorLRU()
|
|
{
|
|
mLRUSize = Preferences::GetUint("layers.compositor-lru-size", uint32_t(0));
|
|
}
|
|
|
|
CompositorLRU::~CompositorLRU()
|
|
{
|
|
}
|
|
|
|
void
|
|
CompositorLRU::Add(PCompositorBridgeParent* aCompositor, const uint64_t& aId)
|
|
{
|
|
auto index = mLRU.IndexOf(std::make_pair(aCompositor, aId));
|
|
if (index != nsTArray<CompositorLayerPair>::NoIndex) {
|
|
return;
|
|
}
|
|
|
|
if (mLRUSize == 0) {
|
|
Unused << aCompositor->SendClearCachedResources(aId);
|
|
return;
|
|
}
|
|
|
|
if (mLRU.Length() == mLRUSize) {
|
|
CompositorLayerPair victim = mLRU.LastElement();
|
|
Unused << victim.first->SendClearCachedResources(victim.second);
|
|
mLRU.RemoveElement(victim);
|
|
}
|
|
mLRU.InsertElementAt(0, std::make_pair(aCompositor, aId));
|
|
}
|
|
|
|
void
|
|
CompositorLRU::Remove(PCompositorBridgeParent* aCompositor, const uint64_t& aId)
|
|
{
|
|
if (mLRUSize == 0) {
|
|
return;
|
|
}
|
|
|
|
auto index = mLRU.IndexOf(std::make_pair(aCompositor, aId));
|
|
|
|
if (index == nsTArray<PCompositorBridgeParent*>::NoIndex) {
|
|
return;
|
|
}
|
|
|
|
mLRU.RemoveElementAt(index);
|
|
}
|
|
|
|
void
|
|
CompositorLRU::Remove(PCompositorBridgeParent* aCompositor)
|
|
{
|
|
if (mLRUSize == 0) {
|
|
return;
|
|
}
|
|
|
|
for (int32_t i = mLRU.Length() - 1; i >= 0; --i) {
|
|
if (mLRU[i].first == aCompositor) {
|
|
mLRU.RemoveElementAt(i);
|
|
}
|
|
}
|
|
}
|
|
|
|
} // namespace layers
|
|
} // namespace mozilla
|