compat.cuh

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// SPDX-License-Identifier: Apache-2.0
 
#pragma once
 
#include <cuda_runtime.h>
#include <limits>
#include <memory>
#include <cuda/std/array>
 
#ifndef FSS_ENABLE_V1_COMPAT
#define FSS_ENABLE_V1_COMPAT 1
#endif
 
#if FSS_ENABLE_V1_COMPAT
 
namespace fss::compat::detail {
 
// Record templates backing the deprecated v1.3.0 aggregate-Key nested names.
// Each scheme header exposes one of these through a deprecated alias, so the
// deprecation warning fires only where the legacy name is spelled. Member
// declarations and definitions use the record types directly: a deprecated
// alias in a member signature would warn on every modern instantiation under
// NVCC. The SchemeTag template parameter keeps the nested types of different
// schemes distinct even when their field shapes coincide.

template <typename SchemeTag, typename Cw, int n>
struct CwsKeyRecord {
  Cw cws[n];
  int4 s0;
};

template <typename SchemeTag, typename Cw, int n>
struct OcwKeyRecord {
  [[deprecated("the par_depth template parameter is gone; pass par_depth to EvalAll() instead")]]
  static constexpr int kParDepth = -1;
  Cw cws[n];
  int4 ocw;
  int4 s0;
};

template <typename SchemeTag, typename Cw, int n>
struct FcwKeyRecord {
  Cw cws[n];
  int4 fcw;
  int4 s0;
};

template <typename SchemeTag, typename Cw, int n>
struct VdpfKeyRecord {
  Cw cws[n];
  cuda::std::array<int4, 4> cs;
  int4 ocw;
  int4 s0;
};

template <typename SchemeTag>
struct ParityTreeRecord {
  bool *p;
  bool b;
};

template <typename SchemeTag>
struct PreprocessedTreeRecord {
  std::unique_ptr<bool[]> p;
  bool b;
 
  [[deprecated("use PreprocessOwned() and OwnedParityTree::View()")]]
  ParityTreeRecord<SchemeTag> view() const { return ParityTreeRecord<SchemeTag>{p.get(), b}; }
};

template <__uint128_t kLegacySize>
constexpr int LegacyBucketSize() {
  static_assert(kLegacySize <= static_cast<__uint128_t>(std::numeric_limits<int>::max()),
      "legacy b_size: kBucketSize does not fit the legacy int domain");
  return static_cast<int>(kLegacySize);
}

template <typename SchemeTag>
struct EvalResultRecord {
  int4 y;
  cuda::std::array<int4, 4> pi_tilde;
};
 
}  // namespace fss::compat::detail
 
#endif  // FSS_ENABLE_V1_COMPAT