base.h

#pragma once

#include <torch/csrc/WindowsTorchApiMacro.h>
#include <torch/types.h>

#include <cstddef>
#include <vector>
#include <mutex>

namespace torch {
namespace serialize {
class OutputArchive;
class InputArchive;
} // namespace serialize
} // namespace torch

namespace torch {
namespace data {
namespace samplers {
template <typename BatchRequest = std::vector<size_t>>
class Sampler {
 public:
  using BatchRequestType = BatchRequest;

  virtual ~Sampler() = default;

  TORCH_API virtual void reset(optional<size_t> new_size) = 0;

  TORCH_API virtual optional<BatchRequest> next(size_t batch_size) = 0;

  TORCH_API virtual void save(serialize::OutputArchive& archive) const = 0;

  TORCH_API virtual void load(serialize::InputArchive& archive) = 0;
};

} // namespace samplers
} // namespace data
} // namespace torch