Program Listing for File base.h

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#pragma once

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

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

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

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

  virtual ~Sampler() = default;

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

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

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

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

} // namespace torch::data::samplers