gecko/gfx/layers/ipc/FenceUtilsGonk.h

83 lines
1.8 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_layers_FenceUtilsGonk_h
#define mozilla_layers_FenceUtilsGonk_h
#include <unistd.h>
#include <ui/Fence.h>
#include "ipc/IPCMessageUtils.h"
#include "mozilla/layers/AsyncTransactionTracker.h" // for AsyncTransactionTracker
namespace mozilla {
namespace layers {
struct FenceHandle {
typedef android::Fence Fence;
FenceHandle()
{ }
FenceHandle(const android::sp<Fence>& aFence);
bool operator==(const FenceHandle& aOther) const {
return mFence.get() == aOther.mFence.get();
}
bool IsValid() const
{
return mFence.get() && mFence->isValid();
}
android::sp<Fence> mFence;
};
// FenceDeliveryTracker puts off releasing a Fence until a transaction complete.
class FenceDeliveryTracker : public AsyncTransactionTracker {
public:
FenceDeliveryTracker(const android::sp<android::Fence>& aFence)
: mFence(aFence)
{
MOZ_COUNT_CTOR(FenceDeliveryTracker);
}
~FenceDeliveryTracker()
{
MOZ_COUNT_DTOR(FenceDeliveryTracker);
}
virtual void Complete() MOZ_OVERRIDE
{
mFence = nullptr;
}
virtual void Cancel() MOZ_OVERRIDE
{
mFence = nullptr;
}
private:
android::sp<android::Fence> mFence;
};
} // namespace layers
} // namespace mozilla
namespace IPC {
template <>
struct ParamTraits<mozilla::layers::FenceHandle> {
typedef mozilla::layers::FenceHandle paramType;
static void Write(Message* aMsg, const paramType& aParam);
static bool Read(const Message* aMsg, void** aIter, paramType* aResult);
};
} // namespace IPC
#endif // mozilla_layers_FenceUtilsGonk_h