Unify all *_EXPORT and *_IMPORT macros across c++ backend (pytorch#12019)

Summary:
TSIA. Right now we should basically use C10_EXPORT and C10_IMPORT for explicitly marking dllexport and dllimport, as a continued effort of the C10 unification.

This is a codemod by mechanically doing the following change:

CAFFE2_{EXPORT,IMPORT} -> C10_{EXPORT,IMPORT}
AT_CORE_{EXPORT,IMPORT} -> C10_{EXPORT,IMPORT}
Pull Request resolved: pytorch#12019

Reviewed By: ezyang, teng-li

Differential Revision: D10016276

Pulled By: Yangqing

fbshipit-source-id: a420d62c43d1110105fc88f9e9076e28a3203164

Author: Yangqing

aten/src/ATen/core/ATenCoreTest.h

@@ -4,5 +4,5 @@
 
 namespace at {
 
-AT_CORE_API int CoreTest();
+CAFFE2_API int CoreTest();
 }

aten/src/ATen/core/ATenGeneral.h

@@ -1,7 +1,3 @@
 #pragma once
 
 #include "ATen/core/Macros.h"
-
-// TODO: Merge the *_API macros.
-#define AT_EXPORT AT_CORE_EXPORT
-#define AT_IMPORT AT_CORE_IMPORT

aten/src/ATen/core/Allocator.h

@@ -115,7 +115,7 @@ struct Allocator {
   }
 };
 
-struct AT_CORE_API InefficientStdFunctionContext {
+struct CAFFE2_API InefficientStdFunctionContext {
   std::unique_ptr<void, std::function<void(void*)>> ptr_;
   InefficientStdFunctionContext(
       std::unique_ptr<void, std::function<void(void*)>>&& ptr)

aten/src/ATen/core/Backtrace.h

@@ -8,7 +8,7 @@
 
 namespace at {
 /// Utility to demangle a C++ symbol name.
-AT_CORE_API std::string demangle(const char* name);
+CAFFE2_API std::string demangle(const char* name);
 
 /// Returns the printable name of the type.
 template <typename T>
@@ -21,7 +21,7 @@ inline const char* demangle_type() {
 #endif // __GXX_RTTI
 }
 
-AT_CORE_API std::string get_backtrace(
+CAFFE2_API std::string get_backtrace(
     size_t frames_to_skip = 0,
     size_t maximum_number_of_frames = 64,
     bool skip_python_frames = true);

aten/src/ATen/core/Device.h

@@ -21,7 +21,7 @@ namespace at {
 /// 1. A negative index represents the current device, a non-negative index
 /// represents a specific, concrete device,
 /// 2. When the device type is CPU, the device index must be zero.
-struct AT_CORE_API Device {
+struct CAFFE2_API Device {
   using Type = at::DeviceType;
 
   /// Constructs a new `Device` from a `DeviceType` and an optional device
@@ -92,7 +92,7 @@ struct AT_CORE_API Device {
   int32_t index_ = -1;
 };
 
-AT_CORE_API std::ostream& operator<<(
+CAFFE2_API std::ostream& operator<<(
     std::ostream& stream,
     const at::Device& device);
 

aten/src/ATen/core/DeviceType.h

@@ -26,11 +26,11 @@ enum class DeviceType : int32_t {
   ONLY_FOR_TEST = 20901701, // This device type is only for test.
 };
 
-AT_CORE_API std::string DeviceTypeName(
+CAFFE2_API std::string DeviceTypeName(
     at::DeviceType d,
     bool lower_case = false);
 
-AT_CORE_API std::ostream& operator<<(std::ostream& stream, at::DeviceType type);
+CAFFE2_API std::ostream& operator<<(std::ostream& stream, at::DeviceType type);
 
 } // namespace at
 

aten/src/ATen/core/Error.h

@@ -19,7 +19,7 @@ namespace at {
 namespace detail {
 
 // Obtains the base name from a full path.
-AT_CORE_API std::string StripBasename(const std::string& full_path);
+CAFFE2_API std::string StripBasename(const std::string& full_path);
 
 inline std::ostream& _str(std::ostream& ss) {
   return ss;
@@ -56,7 +56,7 @@ inline std::string str(const char* c_str) {
 }
 
 /// Represents a location in source code (for debugging).
-struct AT_CORE_API SourceLocation {
+struct CAFFE2_API SourceLocation {
   const char* function;
   const char* file;
   uint32_t line;
@@ -71,7 +71,7 @@ std::ostream& operator<<(std::ostream& out, const SourceLocation& loc);
 ///
 /// NB: at::Error is handled specially by the default torch to suppress the
 /// backtrace, see torch/csrc/Exceptions.h
-class AT_CORE_API Error : public std::exception {
+class CAFFE2_API Error : public std::exception {
   std::vector<std::string> msg_stack_;
   std::string backtrace_;
 
@@ -128,7 +128,7 @@ class AT_CORE_API Error : public std::exception {
   }
 };
 
-class AT_CORE_API Warning {
+class CAFFE2_API Warning {
   using handler_t =
       void (*)(const SourceLocation& source_location, const char* msg);
 
@@ -152,7 +152,7 @@ class AT_CORE_API Warning {
 
 // A utility function to return an exception std::string by prepending its
 // exception type before its what() content
-AT_CORE_API std::string GetExceptionString(const std::exception& e);
+CAFFE2_API std::string GetExceptionString(const std::exception& e);
 
 } // namespace at
 

aten/src/ATen/core/Half.h

@@ -34,8 +34,8 @@ namespace at {
 
 namespace detail {
 
-AT_CORE_API float halfbits2float(unsigned short bits);
-AT_CORE_API unsigned short float2halfbits(float value);
+CAFFE2_API float halfbits2float(unsigned short bits);
+CAFFE2_API unsigned short float2halfbits(float value);
 
 } // namespace detail
 
@@ -178,7 +178,7 @@ To checked_convert(From f, const char* name) {
   return convert<To, From>(f);
 }
 
-AT_CORE_API std::ostream& operator<<(std::ostream& out, const Half& value);
+CAFFE2_API std::ostream& operator<<(std::ostream& out, const Half& value);
 
 } // namespace at
 

aten/src/ATen/core/IdWrapper.h

@@ -22,7 +22,7 @@ namespace at {
  * for you, given the underlying type supports it.
  */
 template <class ConcreteType, class UnderlyingType>
-class AT_CORE_API IdWrapper {
+class CAFFE2_API IdWrapper {
  public:
   using underlying_type = UnderlyingType;
   using concrete_type = ConcreteType;

aten/src/ATen/core/LegacyTypeDispatch.h

@@ -30,7 +30,7 @@
 
 namespace at {
 
-struct AT_CORE_API LegacyTypeInitInterface {
+struct CAFFE2_API LegacyTypeInitInterface {
   virtual ~LegacyTypeInitInterface() {}
   virtual void initCPU() const {
     AT_ERROR("cannot use CPU without ATen library");
@@ -42,15 +42,15 @@ struct AT_CORE_API LegacyTypeInitInterface {
     AT_ERROR("cannot use complex without ATen Complex library");
   }
 };
-struct AT_CORE_API LegacyTypeInitArgs {};
+struct CAFFE2_API LegacyTypeInitArgs {};
 AT_DECLARE_REGISTRY(LegacyTypeInitRegistry, LegacyTypeInitInterface, LegacyTypeInitArgs);
 #define REGISTER_LEGACY_TYPE_INIT(clsname) AT_REGISTER_CLASS(LegacyTypeInitRegistry, clsname, clsname)
 
-AT_CORE_API const LegacyTypeInitInterface& getLegacyTypeInit();
+CAFFE2_API const LegacyTypeInitInterface& getLegacyTypeInit();
 
 struct Type;
 
-struct AT_CORE_API LegacyTypeDeleter {
+struct CAFFE2_API LegacyTypeDeleter {
   using TypeDeleterFun = void(Type*);
   TypeDeleterFun *fn_ = nullptr;
   LegacyTypeDeleter() {}
@@ -62,8 +62,8 @@ struct AT_CORE_API LegacyTypeDeleter {
   }
 };
 
-class AT_CORE_API LegacyTypeDispatch {
-public:
+class CAFFE2_API LegacyTypeDispatch {
+ public:
   using TypeUniquePtr = std::unique_ptr<Type, LegacyTypeDeleter>;
   // WARNING: This function has the precondition that you have
   // initialized the type you want to call.  This initialization
@@ -150,6 +150,6 @@ class AT_CORE_API LegacyTypeDispatch {
     [static_cast<int>(ScalarType::NumOptions)];
 };
 
-AT_CORE_API LegacyTypeDispatch & globalLegacyTypeDispatch();
+CAFFE2_API LegacyTypeDispatch& globalLegacyTypeDispatch();
 
 } // namespace at

aten/src/ATen/core/SmallVector.h

@@ -59,7 +59,7 @@ static inline uint64_t NextPowerOf2(uint64_t A) {
 } // namespace detail
 
 /// This is all the non-templated stuff common to all SmallVectors.
-class AT_CORE_API SmallVectorBase {
+class CAFFE2_API SmallVectorBase {
  protected:
   void *BeginX, *EndX, *CapacityX;
 

aten/src/ATen/core/TensorTypeId.h

@@ -17,7 +17,7 @@ using _tensorTypeId_underlyingType = uint8_t;
  * Dynamic type ID of a Tensor argument.  It represents something like
  * CPUTensor, etc.
  */
-class AT_CORE_API TensorTypeId final
+class CAFFE2_API TensorTypeId final
     : public at::
           IdWrapper<TensorTypeId, details::_tensorTypeId_underlyingType> {
  public:
@@ -32,10 +32,10 @@ class AT_CORE_API TensorTypeId final
       : IdWrapper(id) {}
 
   friend class TensorTypeIdCreator;
-  friend AT_CORE_API std::ostream& operator<<(std::ostream&, TensorTypeId);
+  friend CAFFE2_API std::ostream& operator<<(std::ostream&, TensorTypeId);
 };
 
-AT_CORE_API std::ostream& operator<<(std::ostream&, at::TensorTypeId);
+CAFFE2_API std::ostream& operator<<(std::ostream&, at::TensorTypeId);
 
 } // namespace at
 

aten/src/ATen/core/TensorTypeIdRegistration.h

@@ -16,7 +16,7 @@
 
 namespace at {
 
-class AT_CORE_API TensorTypeIdCreator final {
+class CAFFE2_API TensorTypeIdCreator final {
  public:
   TensorTypeIdCreator();
 
@@ -29,10 +29,10 @@ class AT_CORE_API TensorTypeIdCreator final {
  private:
   std::atomic<details::_tensorTypeId_underlyingType> last_id_;
 
-  AT_DISABLE_COPY_AND_ASSIGN(TensorTypeIdCreator);
+  C10_DISABLE_COPY_AND_ASSIGN(TensorTypeIdCreator);
 };
 
-class AT_CORE_API TensorTypeIdRegistry final {
+class CAFFE2_API TensorTypeIdRegistry final {
  public:
   TensorTypeIdRegistry();
 
@@ -43,10 +43,10 @@ class AT_CORE_API TensorTypeIdRegistry final {
   std::unordered_set<at::TensorTypeId> registeredTypeIds_;
   std::mutex mutex_;
 
-  AT_DISABLE_COPY_AND_ASSIGN(TensorTypeIdRegistry);
+  C10_DISABLE_COPY_AND_ASSIGN(TensorTypeIdRegistry);
 };
 
-class AT_CORE_API TensorTypeIds final {
+class CAFFE2_API TensorTypeIds final {
  public:
   static TensorTypeIds& singleton();
 
@@ -61,14 +61,14 @@ class AT_CORE_API TensorTypeIds final {
   TensorTypeIdCreator creator_;
   TensorTypeIdRegistry registry_;
 
-  AT_DISABLE_COPY_AND_ASSIGN(TensorTypeIds);
+  C10_DISABLE_COPY_AND_ASSIGN(TensorTypeIds);
 };
 
 inline constexpr at::TensorTypeId TensorTypeIds::undefined() noexcept {
   return TensorTypeIdCreator::undefined();
 }
 
-class AT_CORE_API TensorTypeIdRegistrar final {
+class CAFFE2_API TensorTypeIdRegistrar final {
  public:
   TensorTypeIdRegistrar();
   ~TensorTypeIdRegistrar();
@@ -78,14 +78,15 @@ class AT_CORE_API TensorTypeIdRegistrar final {
  private:
   at::TensorTypeId id_;
 
-  AT_DISABLE_COPY_AND_ASSIGN(TensorTypeIdRegistrar);
+  C10_DISABLE_COPY_AND_ASSIGN(TensorTypeIdRegistrar);
 };
 
 inline at::TensorTypeId TensorTypeIdRegistrar::id() const noexcept {
   return id_;
 }
 
-#define AT_DECLARE_TENSOR_TYPE(TensorName) AT_CORE_API at::TensorTypeId TensorName();
+#define AT_DECLARE_TENSOR_TYPE(TensorName) \
+  CAFFE2_API at::TensorTypeId TensorName();
 
 #define AT_DEFINE_TENSOR_TYPE(TensorName)           \
   at::TensorTypeId TensorName() {                   \

aten/src/ATen/core/UniqueVoidPtr.h

@@ -10,7 +10,7 @@ using DeleterFnPtr = void (*)(void*);
 namespace detail {
 
 // Does not delete anything
-AT_CORE_API void deleteNothing(void*);
+CAFFE2_API void deleteNothing(void*);
 
 // A detail::UniqueVoidPtr is an owning smart pointer like unique_ptr, but
 // with three major differences:

aten/src/ATen/core/context_base.h

@@ -25,7 +25,7 @@ class BaseContext;
    functions that are invoked statically before in Tensor class, e.g. New,
    We will merge this with Allocator later.
  */
-class AT_CORE_API BaseStaticContext {
+class CAFFE2_API BaseStaticContext {
  public:
   virtual ~BaseStaticContext() noexcept {}
 
@@ -55,7 +55,7 @@ class AT_CORE_API BaseStaticContext {
  * functions in the BaseContext class.
  * TODO: add docs after this is finalized.
  */
-class AT_CORE_API BaseContext {
+class CAFFE2_API BaseContext {
  public:
   virtual ~BaseContext() noexcept {}
 

aten/src/ATen/core/intrusive_ptr.h

@@ -33,7 +33,7 @@ namespace c10 {
 // tells us if the object was allocated by us.  If it wasn't, no
 // intrusive_ptr for you!
 
-class AT_CORE_API intrusive_ptr_target {
+class CAFFE2_API intrusive_ptr_target {
   // Note [Weak references for intrusive refcounting]
   // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   // Here's the scheme:
@@ -114,7 +114,7 @@ class AT_CORE_API intrusive_ptr_target {
 
 namespace detail {
 template <class TTarget>
-struct AT_CORE_EXPORT intrusive_target_default_null_type final {
+struct C10_EXPORT intrusive_target_default_null_type final {
   static constexpr TTarget* singleton() noexcept {
     return nullptr;
   }
@@ -136,7 +136,7 @@ class weak_intrusive_ptr;
 template <
     class TTarget,
     class NullType = detail::intrusive_target_default_null_type<TTarget>>
-class AT_CORE_EXPORT intrusive_ptr final {
+class C10_EXPORT intrusive_ptr final {
  private:
   static_assert(
       std::is_base_of<intrusive_ptr_target, TTarget>::value,
@@ -391,7 +391,7 @@ inline bool operator!=(
 template <
     typename TTarget,
     class NullType = detail::intrusive_target_default_null_type<TTarget>>
-class AT_CORE_EXPORT weak_intrusive_ptr final {
+class C10_EXPORT weak_intrusive_ptr final {
  private:
   static_assert(
       std::is_base_of<intrusive_ptr_target, TTarget>::value,
@@ -739,13 +739,13 @@ namespace std {
 // To allow intrusive_ptr and weak_intrusive_ptr inside std::unordered_map or
 // std::unordered_set, we need std::hash
 template <class TTarget, class NullType>
-struct AT_CORE_EXPORT hash<c10::intrusive_ptr<TTarget, NullType>> {
+struct C10_EXPORT hash<c10::intrusive_ptr<TTarget, NullType>> {
   size_t operator()(const c10::intrusive_ptr<TTarget, NullType>& x) const {
     return std::hash<TTarget*>()(x.get());
   }
 };
 template <class TTarget, class NullType>
-struct AT_CORE_EXPORT hash<c10::weak_intrusive_ptr<TTarget, NullType>> {
+struct C10_EXPORT hash<c10::weak_intrusive_ptr<TTarget, NullType>> {
   size_t operator()(const c10::weak_intrusive_ptr<TTarget, NullType>& x) const {
     return std::hash<TTarget*>()(x._unsafe_get_target());
   }

aten/src/ATen/core/ivalue.h

@@ -34,7 +34,7 @@ struct CAFFE2_API ConstantString final : c10::intrusive_ptr_target {
 
 // non-mutable list
 template <typename Elem>
-struct AT_CORE_EXPORT ConstantList final : c10::intrusive_ptr_target {
+struct C10_EXPORT ConstantList final : c10::intrusive_ptr_target {
  private:
   const std::vector<Elem> elements_;
  public: