threading_backend.h

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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
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#ifndef TVM_RUNTIME_THREADING_BACKEND_H_
#define TVM_RUNTIME_THREADING_BACKEND_H_

#include <functional>
#include <memory>
#include <vector>

namespace tvm {
namespace runtime {
namespace threading {

class ThreadGroup {
 public:
  class Impl;

  ThreadGroup(int num_workers, std::function<void(int)> worker_callback,
              bool exclude_worker0 = false);
  ~ThreadGroup();

  void Join();

  enum AffinityMode : int {
    kBig = 1,
    kLittle = -1,
  };

  int Configure(AffinityMode mode, int nthreads, bool exclude_worker0);

 private:
  Impl* impl_;
};

void Yield();

int MaxConcurrency();

void ResetThreadPool();

}  // namespace threading
}  // namespace runtime
}  // namespace tvm

#endif  // TVM_RUNTIME_THREADING_BACKEND_H_