зеркало из https://github.com/mozilla/gecko-dev.git
62 строки
1.5 KiB
C++
62 строки
1.5 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/. */
|
|
|
|
#ifndef mozilla_CompositorLRU_h
|
|
#define mozilla_CompositorLRU_h
|
|
|
|
#include "mozilla/StaticPtr.h"
|
|
|
|
#include "nsISupportsImpl.h"
|
|
#include "nsTArray.h"
|
|
|
|
#include <utility>
|
|
|
|
namespace mozilla {
|
|
namespace layers {
|
|
|
|
class PCompositorBridgeParent;
|
|
|
|
class CompositorLRU final
|
|
{
|
|
typedef std::pair<PCompositorBridgeParent*, uint64_t> CompositorLayerPair;
|
|
public:
|
|
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(CompositorLRU)
|
|
|
|
static void Init();
|
|
static CompositorLRU* GetSingleton();
|
|
|
|
/**
|
|
* Adds the (PCompositorBridgeParent, LayerId) pair to the LRU pool. If
|
|
* the pool size grows over mLRUSize, the oldest PCompositorBridgeParent
|
|
* is evicted.
|
|
*/
|
|
void Add(PCompositorBridgeParent* aCompositor, const uint64_t& id);
|
|
|
|
/**
|
|
* Remove the (PCompositorBridgeParent, LayersId) pair from the LRU pool.
|
|
*/
|
|
void Remove(PCompositorBridgeParent* aCompositor, const uint64_t& id);
|
|
|
|
/**
|
|
* Remove all PCompositorBridgeParents from the LRU pool.
|
|
*/
|
|
void Remove(PCompositorBridgeParent* aCompositor);
|
|
|
|
private:
|
|
static StaticRefPtr<CompositorLRU> sSingleton;
|
|
|
|
CompositorLRU();
|
|
~CompositorLRU();
|
|
uint32_t mLRUSize;
|
|
nsTArray<CompositorLayerPair> mLRU;
|
|
};
|
|
|
|
} // namespace layers
|
|
} // namespace mozilla
|
|
|
|
#endif // mozilla_CompositorLRU_h
|