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/*
* Copyright (C) 2020 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.
*/
#ifndef ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_COMMON_RESILIENT_BURST_H
#define ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_COMMON_RESILIENT_BURST_H
#include <android-base/thread_annotations.h>
#include <nnapi/IBurst.h>
#include <nnapi/Result.h>
#include <nnapi/Types.h>
#include <functional>
#include <memory>
#include <mutex>
#include <optional>
#include <utility>
namespace android::hardware::neuralnetworks::utils {
class ResilientBurst final : public nn::IBurst,
public std::enable_shared_from_this<ResilientBurst> {
struct PrivateConstructorTag {};
public:
using Factory = std::function<nn::GeneralResult<nn::SharedBurst>()>;
static nn::GeneralResult<std::shared_ptr<const ResilientBurst>> create(Factory makeBurst);
ResilientBurst(PrivateConstructorTag tag, Factory makeBurst, nn::SharedBurst burst);
nn::SharedBurst getBurst() const;
nn::GeneralResult<nn::SharedBurst> recover(const nn::IBurst* failingBurst) const;
OptionalCacheHold cacheMemory(const nn::SharedMemory& memory) const override;
nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> execute(
const nn::Request& request, nn::MeasureTiming measure,
const nn::OptionalTimePoint& deadline,
const nn::OptionalDuration& loopTimeoutDuration) const override;
nn::GeneralResult<nn::SharedExecution> createReusableExecution(
const nn::Request& request, nn::MeasureTiming measure,
const nn::OptionalDuration& loopTimeoutDuration) const override;
private:
bool isValidInternal() const EXCLUDES(mMutex);
nn::GeneralResult<nn::SharedExecution> createReusableExecutionInternal(
const nn::Request& request, nn::MeasureTiming measure,
const nn::OptionalDuration& loopTimeoutDuration) const;
const Factory kMakeBurst;
mutable std::mutex mMutex;
mutable nn::SharedBurst mBurst GUARDED_BY(mMutex);
};
} // namespace android::hardware::neuralnetworks::utils
#endif // ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_COMMON_RESILIENT_BURST_H
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