/home/runner/work/cccl/cccl/cub/cub/device/device_partition.cuh
File members: /home/runner/work/cccl/cccl/cub/cub/device/device_partition.cuh
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* Copyright (c) 2011, Duane Merrill. All rights reserved.
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#pragma once
#include <cub/config.cuh>
#if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
# pragma GCC system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_CLANG)
# pragma clang system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_MSVC)
# pragma system_header
#endif // no system header
#include <cub/detail/nvtx.cuh>
#include <cub/device/dispatch/dispatch_select_if.cuh>
#include <cub/device/dispatch/dispatch_three_way_partition.cuh>
#include <cub/util_deprecated.cuh>
#include <iterator>
#include <stdio.h>
CUB_NAMESPACE_BEGIN
struct DevicePartition
{
template <typename InputIteratorT, typename FlagIterator, typename OutputIteratorT, typename NumSelectedIteratorT>
CUB_RUNTIME_FUNCTION _CCCL_FORCEINLINE static cudaError_t Flagged(
void* d_temp_storage,
size_t& temp_storage_bytes,
InputIteratorT d_in,
FlagIterator d_flags,
OutputIteratorT d_out,
NumSelectedIteratorT d_num_selected_out,
int num_items,
cudaStream_t stream = 0)
{
CUB_DETAIL_NVTX_RANGE_SCOPE_IF(d_temp_storage, "cub::DevicePartition::Flagged");
using OffsetT = int; // Signed integer type for global offsets
using SelectOp = NullType; // Selection op (not used)
using EqualityOp = NullType; // Equality operator (not used)
using DispatchSelectIfT =
DispatchSelectIf<InputIteratorT,
FlagIterator,
OutputIteratorT,
NumSelectedIteratorT,
SelectOp,
EqualityOp,
OffsetT,
true>;
return DispatchSelectIfT::Dispatch(
d_temp_storage,
temp_storage_bytes,
d_in,
d_flags,
d_out,
d_num_selected_out,
SelectOp{},
EqualityOp{},
num_items,
stream);
}
template <typename InputIteratorT, typename FlagIterator, typename OutputIteratorT, typename NumSelectedIteratorT>
CUB_DETAIL_RUNTIME_DEBUG_SYNC_IS_NOT_SUPPORTED CUB_RUNTIME_FUNCTION _CCCL_FORCEINLINE static cudaError_t Flagged(
void* d_temp_storage,
size_t& temp_storage_bytes,
InputIteratorT d_in,
FlagIterator d_flags,
OutputIteratorT d_out,
NumSelectedIteratorT d_num_selected_out,
int num_items,
cudaStream_t stream,
bool debug_synchronous)
{
CUB_DETAIL_RUNTIME_DEBUG_SYNC_USAGE_LOG
return Flagged<InputIteratorT, FlagIterator, OutputIteratorT, NumSelectedIteratorT>(
d_temp_storage, temp_storage_bytes, d_in, d_flags, d_out, d_num_selected_out, num_items, stream);
}
template <typename InputIteratorT, typename OutputIteratorT, typename NumSelectedIteratorT, typename SelectOp>
CUB_RUNTIME_FUNCTION _CCCL_FORCEINLINE static cudaError_t
If(void* d_temp_storage,
size_t& temp_storage_bytes,
InputIteratorT d_in,
OutputIteratorT d_out,
NumSelectedIteratorT d_num_selected_out,
int num_items,
SelectOp select_op,
cudaStream_t stream = 0)
{
CUB_DETAIL_NVTX_RANGE_SCOPE_IF(d_temp_storage, "cub::DevicePartition::If");
using OffsetT = int; // Signed integer type for global offsets
using FlagIterator = NullType*; // FlagT iterator type (not used)
using EqualityOp = NullType; // Equality operator (not used)
using DispatchSelectIfT =
DispatchSelectIf<InputIteratorT,
FlagIterator,
OutputIteratorT,
NumSelectedIteratorT,
SelectOp,
EqualityOp,
OffsetT,
true>;
return DispatchSelectIfT::Dispatch(
d_temp_storage,
temp_storage_bytes,
d_in,
nullptr,
d_out,
d_num_selected_out,
select_op,
EqualityOp{},
num_items,
stream);
}
template <typename InputIteratorT, typename OutputIteratorT, typename NumSelectedIteratorT, typename SelectOp>
CUB_DETAIL_RUNTIME_DEBUG_SYNC_IS_NOT_SUPPORTED CUB_RUNTIME_FUNCTION _CCCL_FORCEINLINE static cudaError_t
If(void* d_temp_storage,
size_t& temp_storage_bytes,
InputIteratorT d_in,
OutputIteratorT d_out,
NumSelectedIteratorT d_num_selected_out,
int num_items,
SelectOp select_op,
cudaStream_t stream,
bool debug_synchronous)
{
CUB_DETAIL_RUNTIME_DEBUG_SYNC_USAGE_LOG
return If<InputIteratorT, OutputIteratorT, NumSelectedIteratorT, SelectOp>(
d_temp_storage, temp_storage_bytes, d_in, d_out, d_num_selected_out, num_items, select_op, stream);
}
private:
template <bool IS_DESCENDING,
typename KeyT,
typename ValueT,
typename OffsetT,
typename BeginOffsetIteratorT,
typename EndOffsetIteratorT,
typename SelectedPolicy>
friend class DispatchSegmentedSort;
// Internal version without NVTX range
template <typename InputIteratorT,
typename FirstOutputIteratorT,
typename SecondOutputIteratorT,
typename UnselectedOutputIteratorT,
typename NumSelectedIteratorT,
typename SelectFirstPartOp,
typename SelectSecondPartOp>
CUB_RUNTIME_FUNCTION _CCCL_FORCEINLINE static cudaError_t IfNoNVTX(
void* d_temp_storage,
std::size_t& temp_storage_bytes,
InputIteratorT d_in,
FirstOutputIteratorT d_first_part_out,
SecondOutputIteratorT d_second_part_out,
UnselectedOutputIteratorT d_unselected_out,
NumSelectedIteratorT d_num_selected_out,
int num_items,
SelectFirstPartOp select_first_part_op,
SelectSecondPartOp select_second_part_op,
cudaStream_t stream = 0)
{
using OffsetT = int;
using DispatchThreeWayPartitionIfT = DispatchThreeWayPartitionIf<
InputIteratorT,
FirstOutputIteratorT,
SecondOutputIteratorT,
UnselectedOutputIteratorT,
NumSelectedIteratorT,
SelectFirstPartOp,
SelectSecondPartOp,
OffsetT>;
return DispatchThreeWayPartitionIfT::Dispatch(
d_temp_storage,
temp_storage_bytes,
d_in,
d_first_part_out,
d_second_part_out,
d_unselected_out,
d_num_selected_out,
select_first_part_op,
select_second_part_op,
num_items,
stream);
}
public:
template <typename InputIteratorT,
typename FirstOutputIteratorT,
typename SecondOutputIteratorT,
typename UnselectedOutputIteratorT,
typename NumSelectedIteratorT,
typename SelectFirstPartOp,
typename SelectSecondPartOp>
CUB_RUNTIME_FUNCTION _CCCL_FORCEINLINE static cudaError_t
If(void* d_temp_storage,
std::size_t& temp_storage_bytes,
InputIteratorT d_in,
FirstOutputIteratorT d_first_part_out,
SecondOutputIteratorT d_second_part_out,
UnselectedOutputIteratorT d_unselected_out,
NumSelectedIteratorT d_num_selected_out,
int num_items,
SelectFirstPartOp select_first_part_op,
SelectSecondPartOp select_second_part_op,
cudaStream_t stream = 0)
{
CUB_DETAIL_NVTX_RANGE_SCOPE_IF(d_temp_storage, "cub::DevicePartition::If");
return IfNoNVTX(
d_temp_storage,
temp_storage_bytes,
d_in,
d_first_part_out,
d_second_part_out,
d_unselected_out,
d_num_selected_out,
num_items,
select_first_part_op,
select_second_part_op,
stream);
}
template <typename InputIteratorT,
typename FirstOutputIteratorT,
typename SecondOutputIteratorT,
typename UnselectedOutputIteratorT,
typename NumSelectedIteratorT,
typename SelectFirstPartOp,
typename SelectSecondPartOp>
CUB_DETAIL_RUNTIME_DEBUG_SYNC_IS_NOT_SUPPORTED CUB_RUNTIME_FUNCTION _CCCL_FORCEINLINE static cudaError_t
If(void* d_temp_storage,
std::size_t& temp_storage_bytes,
InputIteratorT d_in,
FirstOutputIteratorT d_first_part_out,
SecondOutputIteratorT d_second_part_out,
UnselectedOutputIteratorT d_unselected_out,
NumSelectedIteratorT d_num_selected_out,
int num_items,
SelectFirstPartOp select_first_part_op,
SelectSecondPartOp select_second_part_op,
cudaStream_t stream,
bool debug_synchronous)
{
CUB_DETAIL_RUNTIME_DEBUG_SYNC_USAGE_LOG
return If<InputIteratorT,
FirstOutputIteratorT,
SecondOutputIteratorT,
UnselectedOutputIteratorT,
NumSelectedIteratorT,
SelectFirstPartOp,
SelectSecondPartOp>(
d_temp_storage,
temp_storage_bytes,
d_in,
d_first_part_out,
d_second_part_out,
d_unselected_out,
d_num_selected_out,
num_items,
select_first_part_op,
select_second_part_op,
stream);
}
};
CUB_NAMESPACE_END