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Dispatch.h
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#pragma once
#include <ATen/Type.h>
#include <c10/util/Half.h>
#include <c10/util/Exception.h>
#define AT_PRIVATE_CASE_TYPE(enum_type, type, ...) \
case enum_type: { \
using scalar_t = type; \
return __VA_ARGS__(); \
}
namespace detail {
template <at::ScalarType N>
struct ScalarTypeToCType;
template<>
struct ScalarTypeToCType<at::ScalarType::Half> {
using type = at::Half;
// This is a workaround for the CUDA bug which prevents ::detail::ScalarTypeToCType<T>::type being used directly
// due to ambiguous reference which can't to be resolved. For some reason it cant pick between at::detail and at::cuda::detail.
// For repro example, please see: https://gist.github.com/izdeby/952ae7cf256ddb740a73776d39a7e7ba
// TODO: remove once the bug is fixed.
static at::Half t;
};
template<>
struct ScalarTypeToCType<at::ScalarType::Bool> {
using type = bool;
// This is a workaround for the CUDA bug which prevents ::detail::ScalarTypeToCType<T>::type being used directly
// due to ambiguous reference which can't to be resolved. For some reason it cant pick between at::detail and at::cuda::detail.
// For repro example, please see: https://gist.github.com/izdeby/952ae7cf256ddb740a73776d39a7e7ba
// TODO: remove once the bug is fixed.
static bool t;
};
inline at::ScalarType scalar_type(at::ScalarType s) {
return s;
}
C10_DEPRECATED_MESSAGE("passing at::DeprecatedTypeProperties to an AT_DISPATCH macro is deprecated, " \
"pass an at::ScalarType instead")
inline at::ScalarType scalar_type(const at::DeprecatedTypeProperties &t) {
return t.scalarType();
}
C10_DEPRECATED_MESSAGE("AT_DISPATCH_ALL_TYPES_AND_HALF is deprecated, " \
"use AT_DISPATCH_ALL_TYPES_AND(at::ScalarType::Half, ...) instead")
inline void deprecated_AT_DISPATCH_ALL_TYPES_AND_HALF() {}
C10_DEPRECATED_MESSAGE("AT_DISPATCH_ALL_TYPES_AND_HALF_AND_COMPLEX is deprecated, " \
"use AT_DISPATCH_ALL_TYPES_AND_COMPLEX_AND(at::ScalarType::Half, ...) " \
"instead")
inline void deprecated_AT_DISPATCH_ALL_TYPES_AND_HALF_AND_COMPLEX() {}
}
// NB: the the_type variable is not used, but we have kept it for
// backwards compatibility. It's probably not used by anyone though;
// but we're just being safe (and it doesn't hurt.) Note we must
// use it to shut up warnings about unused store.
#define AT_DISPATCH_FLOATING_TYPES(TYPE, NAME, ...) \
[&] { \
const auto& the_type = TYPE; \
(void)the_type; \
at::ScalarType _st = ::detail::scalar_type(TYPE); \
switch (_st) { \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Double, double, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Float, float, __VA_ARGS__) \
default: \
AT_ERROR(#NAME, " not implemented for '", toString(_st), "'"); \
} \
}()
#define AT_DISPATCH_FLOATING_TYPES_AND_HALF(TYPE, NAME, ...) \
[&] { \
const auto& the_type = TYPE; \
(void)the_type; \
at::ScalarType _st = ::detail::scalar_type(TYPE); \
switch (_st) { \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Double, double, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Float, float, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Half, at::Half, __VA_ARGS__) \
default: \
AT_ERROR(#NAME, " not implemented for '", toString(_st), "'"); \
} \
}()
#define AT_DISPATCH_FLOATING_AND_COMPLEX_TYPES(TYPE, NAME, ...) \
[&] { \
const auto& the_type = TYPE; \
(void)the_type; \
at::ScalarType _st = ::detail::scalar_type(TYPE); \
switch (_st) { \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Double, double, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Float, float, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Half, at::Half, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE( \
at::ScalarType::ComplexDouble, std::complex<double>, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE( \
at::ScalarType::ComplexFloat, std::complex<float>, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE( \
at::ScalarType::ComplexHalf, std::complex<at::Half>, __VA_ARGS__) \
default: \
AT_ERROR(#NAME, " not implemented for '", toString(_st), "'"); \
} \
}()
#define AT_DISPATCH_INTEGRAL_TYPES(TYPE, NAME, ...) \
[&] { \
const auto& the_type = TYPE; \
(void)the_type; \
at::ScalarType _st = ::detail::scalar_type(TYPE); \
switch (_st) { \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Byte, uint8_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Char, int8_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Int, int32_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Long, int64_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Short, int16_t, __VA_ARGS__) \
default: \
AT_ERROR(#NAME, " not implemented for '", toString(_st), "'"); \
} \
}()
#define AT_DISPATCH_ALL_TYPES_AND_HALF(TYPE, NAME, ...) \
[&] { \
detail::deprecated_AT_DISPATCH_ALL_TYPES_AND_HALF(); \
const auto& the_type = TYPE; \
(void)the_type; \
at::ScalarType _st = ::detail::scalar_type(TYPE); \
switch (_st) { \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Byte, uint8_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Char, int8_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Double, double, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Float, float, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Int, int32_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Long, int64_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Short, int16_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Half, at::Half, __VA_ARGS__) \
default: \
AT_ERROR(#NAME, " not implemented for '", toString(_st), "'"); \
} \
}()
#define AT_DISPATCH_ALL_TYPES(TYPE, NAME, ...) \
[&] { \
const auto& the_type = TYPE; \
(void)the_type; \
at::ScalarType _st = ::detail::scalar_type(TYPE); \
switch (_st) { \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Byte, uint8_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Char, int8_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Double, double, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Float, float, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Int, int32_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Long, int64_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Short, int16_t, __VA_ARGS__) \
default: \
AT_ERROR(#NAME, " not implemented for '", toString(_st), "'"); \
} \
}()
#define AT_DISPATCH_COMPLEX_TYPES(TYPE, NAME, ...) \
[&] { \
const auto& the_type = TYPE; \
(void)the_type; \
at::ScalarType _st = ::detail::scalar_type(TYPE); \
switch (_st) { \
AT_PRIVATE_CASE_TYPE( \
at::ScalarType::ComplexFloat, std::complex<float>, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE( \
at::ScalarType::ComplexDouble, std::complex<double>, __VA_ARGS__) \
default: \
AT_ERROR(#NAME, " not implemented for '", toString(_st), "'"); \
} \
}()
#define AT_DISPATCH_ALL_TYPES_AND_COMPLEX(TYPE, NAME, ...) \
[&] { \
const auto& the_type = TYPE; \
(void)the_type; \
at::ScalarType _st = ::detail::scalar_type(TYPE); \
switch (_st) { \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Byte, uint8_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Char, int8_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Double, double, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Float, float, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Int, int32_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Long, int64_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Short, int16_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE( \
at::ScalarType::ComplexFloat, std::complex<float>, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE( \
at::ScalarType::ComplexDouble, std::complex<double>, __VA_ARGS__) \
default: \
AT_ERROR(#NAME, " not implemented for '", toString(_st), "'"); \
} \
}()
#define AT_DISPATCH_ALL_TYPES_AND_HALF_AND_COMPLEX(TYPE, NAME, ...) \
[&] { \
detail::deprecated_AT_DISPATCH_ALL_TYPES_AND_HALF_AND_COMPLEX() \
const auto& the_type = TYPE; \
(void)the_type; \
at::ScalarType _st = ::detail::scalar_type(TYPE); \
switch (_st) { \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Byte, uint8_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Char, int8_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Double, double, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Float, float, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Int, int32_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Long, int64_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Short, int16_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Half, at::Half, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE( \
at::ScalarType::ComplexFloat, std::complex<float>, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE( \
at::ScalarType::ComplexDouble, std::complex<double>, __VA_ARGS__) \
default: \
AT_ERROR(#NAME, " not implemented for '", toString(_st), "'"); \
} \
}()
#define AT_DISPATCH_ALL_TYPES_AND(SCALARTYPE, TYPE, NAME, ...) \
[&] { \
switch (TYPE) { \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Byte, uint8_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Char, int8_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Double, double, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Float, float, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Int, int32_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Long, int64_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Short, int16_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(SCALARTYPE, decltype(::detail::ScalarTypeToCType<SCALARTYPE>::t), __VA_ARGS__) \
default: \
AT_ERROR(#NAME, " not implemented for '", toString(TYPE), "'"); \
} \
}()
#define AT_DISPATCH_ALL_TYPES_AND2(SCALARTYPE1, SCALARTYPE2, TYPE, NAME, ...) \
[&] { \
switch (TYPE) { \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Byte, uint8_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Char, int8_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Double, double, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Float, float, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Int, int32_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Long, int64_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Short, int16_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(SCALARTYPE1, decltype(::detail::ScalarTypeToCType<SCALARTYPE1>::t), __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(SCALARTYPE2, decltype(::detail::ScalarTypeToCType<SCALARTYPE2>::t), __VA_ARGS__) \
default: \
AT_ERROR(#NAME, " not implemented for '", toString(TYPE), "'"); \
} \
}()
#define AT_DISPATCH_ALL_TYPES_AND_COMPLEX_AND(SCALARTYPE1, SCALARTYPE2, TYPE, NAME, ...) \
[&] { \
switch (TYPE) { \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Byte, uint8_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Char, int8_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Double, double, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Float, float, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Int, int32_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Long, int64_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(at::ScalarType::Short, int16_t, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(SCALARTYPE1, decltype(::detail::ScalarTypeToCType<SCALARTYPE1>::t), __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE(SCALARTYPE2, decltype(::detail::ScalarTypeToCType<SCALARTYPE2>::t), __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE( \
at::ScalarType::ComplexFloat, std::complex<float>, __VA_ARGS__) \
AT_PRIVATE_CASE_TYPE( \
at::ScalarType::ComplexDouble, std::complex<double>, __VA_ARGS__) \
default: \
AT_ERROR(#NAME, " not implemented for '", TYPE, "'"); \
} \
}()