android13/frameworks/native/services/surfaceflinger/CompositionEngine/include/compositionengine/FenceResult.h

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C++

/*
* Copyright 2022 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <android-base/expected.h>
#include <utils/Errors.h>
#include <utils/StrongPointer.h>
// TODO(b/232535621): Pull this file to <ui/FenceResult.h> so that RenderEngine::drawLayers returns
// FenceResult rather than RenderEngineResult.
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wconversion"
#include <renderengine/RenderEngine.h>
#pragma clang diagnostic pop
namespace android {
class Fence;
using FenceResult = base::expected<sp<Fence>, status_t>;
// TODO(b/232535621): Prevent base::unexpected(NO_ERROR) from being a valid FenceResult.
inline status_t fenceStatus(const FenceResult& fenceResult) {
return fenceResult.ok() ? NO_ERROR : fenceResult.error();
}
inline FenceResult toFenceResult(renderengine::RenderEngineResult&& result) {
if (auto [status, fence] = std::move(result); fence.ok()) {
return sp<Fence>::make(std::move(fence));
} else {
return base::unexpected(status);
}
}
} // namespace android