/*
 * Copyright (c) 2023, NVIDIA CORPORATION.
 *
 * 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 <curand.h>

#include <vector>

namespace HugeCTR {

class CPUResource {
  std::vector<curandGenerator_t> replica_uniform_curand_generators_;
  std::vector<curandGenerator_t> replica_variant_curand_generators_;
  unsigned long long replica_uniform_seed_;

 public:
  CPUResource(unsigned long long replica_uniform_seed,
              const std::vector<unsigned long long> replica_variant_seeds);
  CPUResource(const CPUResource&) = delete;
  CPUResource& operator=(const CPUResource&) = delete;
  ~CPUResource();

  unsigned long long get_replica_uniform_seed() const { return replica_uniform_seed_; }

  const curandGenerator_t& get_replica_uniform_curand_generator(size_t id) const {
    return replica_uniform_curand_generators_[id];
  }
  const curandGenerator_t& get_replica_variant_curand_generator(size_t id) const {
    return replica_variant_curand_generators_[id];
  }
};
}  // namespace HugeCTR
