timestamps.hpp

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/*
 * Copyright (c) 2019-2024, 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 <cudf/utilities/export.hpp>
#include <cudf/wrappers/durations.hpp>
 
namespace CUDF_EXPORT cudf {
namespace detail {
// TODO: Use chrono::utc_clock when available in libcu++?
template <class Duration>
using time_point = cuda::std::chrono::sys_time<Duration>;  
 
template <class Duration>
using timestamp = time_point<Duration>;
}  // namespace detail
 
using timestamp_D = detail::timestamp<cudf::duration_D>;
using timestamp_h = detail::timestamp<cudf::duration_h>;
using timestamp_m = detail::timestamp<cudf::duration_m>;
using timestamp_s = detail::timestamp<cudf::duration_s>;
using timestamp_ms = detail::timestamp<cudf::duration_ms>;
using timestamp_us = detail::timestamp<cudf::duration_us>;
using timestamp_ns = detail::timestamp<cudf::duration_ns>;
 
static_assert(sizeof(timestamp_D) == sizeof(typename timestamp_D::rep));
static_assert(sizeof(timestamp_h) == sizeof(typename timestamp_h::rep));
static_assert(sizeof(timestamp_m) == sizeof(typename timestamp_m::rep));
static_assert(sizeof(timestamp_s) == sizeof(typename timestamp_s::rep));
static_assert(sizeof(timestamp_ms) == sizeof(typename timestamp_ms::rep));
static_assert(sizeof(timestamp_us) == sizeof(typename timestamp_us::rep));
static_assert(sizeof(timestamp_ns) == sizeof(typename timestamp_ns::rep));
  // end of group
}  // namespace CUDF_EXPORT cudf