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/*
* Copyright (C) 2019 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_FRAMEWORKS_ML_NN_RUNTIME_BURST_BUILDER_H
#define ANDROID_FRAMEWORKS_ML_NN_RUNTIME_BURST_BUILDER_H
#include <atomic>
#include <memory>
#include <vector>
#include "ExecutionBurstController.h"
namespace android {
namespace nn {
class CompilationBuilder;
/*
* TODO: Could we "hide" the per-step burst controller instance inside
* StepExecutor? Today it's exposed as a "sibling" to StepExecutor:
* ExecutionPlan::next both generates a StepExecutor instance and finds a
* pointer to a burst controller; and StepExecutor::startCompute is passed a
* pointer to a burst controller. Instead, could ExecutionPlan::next stash the
* burst controller in the StepExecutor, so that it doesn't have to be passed
* to any of the StepExecutor methods?
*/
class BurstBuilder {
public:
BurstBuilder(const CompilationBuilder* compilation,
std::vector<std::shared_ptr<ExecutionBurstController>> burstControllers);
bool tryLock();
void unlock();
const CompilationBuilder* getCompilation() const;
std::shared_ptr<ExecutionBurstController> getControllerAt(size_t index) const;
private:
std::atomic_flag mCurrentlyRunning = ATOMIC_FLAG_INIT;
const CompilationBuilder* mCompilation;
std::vector<std::shared_ptr<ExecutionBurstController>> mBurstControllers;
};
} // namespace nn
} // namespace android
#endif // ANDROID_FRAMEWORKS_ML_NN_RUNTIME_BURST_BUILDER_H
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