BackendContext.h

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/*
 * Copyright (c) 2020 Samsung Electronics Co., Ltd. All Rights Reserved
 *
 * 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 __ONERT_BACKEND_XNNPACK_BACKEND_CONTEXT_H__
#define __ONERT_BACKEND_XNNPACK_BACKEND_CONTEXT_H__
 
#include <backend/BackendContext.h>
#include <util/ConfigSource.h>
#include "TensorBuilder.h"
#include "KernelGenerator.h"
#include "ExternalContext.h"
 
const int kDefaultNumThreadpoolThreads = 1;
 
namespace onert
{
namespace backend
{
namespace xnnpack
{
 
class BackendContext : public onert::backend::BackendContext
{
public:
  BackendContext(const Backend *backend, ContextData &&data,
                 std::shared_ptr<ITensorRegistry> tensor_registry = nullptr,
                 std::shared_ptr<TensorBuilder> tensor_builder = nullptr,
                 std::shared_ptr<KernelGenerator> kernel_gen = nullptr)
    : onert::backend::BackendContext(backend, std::move(data), tensor_registry),
      tensor_builder{tensor_builder}, kernel_gen{kernel_gen}, _external_context(nullptr)
  {
    int num_threads = util::getConfigInt(util::config::NUM_THREADS);
    if (num_threads < 1)
      num_threads = kDefaultNumThreadpoolThreads; // default num of threads
    _external_context.reset(new ExternalContext(static_cast<size_t>(num_threads)));
  }
 
  ITensorRegistry *genTensors() override;
  FunctionMap genKernels() override;
 
  std::shared_ptr<ExternalContext> external_context() { return _external_context; }
 
public:
  // TODO Make it private
  std::shared_ptr<TensorBuilder> tensor_builder;
  std::shared_ptr<KernelGenerator> kernel_gen;
 
private:
  std::shared_ptr<ExternalContext> _external_context;
};
 
} // namespace xnnpack
} // namespace backend
} // namespace onert
 
#endif // __ONERT_BACKEND_XNNPACK_BACKEND_CONTEXT_H__