| /*! |
| * Copyright (c) 2017 by Contributors |
| * \file tvm/api_registry.h |
| * \brief This file contains utilities related to |
| * the TVM's global function registry. |
| */ |
| #ifndef TVM_API_REGISTRY_H_ |
| #define TVM_API_REGISTRY_H_ |
| |
| #include <string> |
| #include "base.h" |
| #include "packed_func_ext.h" |
| #include "runtime/registry.h" |
| |
| namespace tvm { |
| /*! |
| * \brief Register an API function globally. |
| * It simply redirects to TVM_REGISTER_GLOBAL |
| * |
| * \code |
| * TVM_REGISTER_API(MyPrint) |
| * .set_body([](TVMArgs args, TVMRetValue* rv) { |
| * // my code. |
| * }); |
| * \endcode |
| */ |
| #define TVM_REGISTER_API(OpName) TVM_REGISTER_GLOBAL(OpName) |
| |
| /*! |
| * \brief Node container of EnvFunc |
| * \sa EnvFunc |
| */ |
| class EnvFuncNode : public Node { |
| public: |
| /*! \brief Unique name of the global function */ |
| std::string name; |
| /*! \brief The internal packed function */ |
| PackedFunc func; |
| /*! \brief constructor */ |
| EnvFuncNode() {} |
| |
| void VisitAttrs(AttrVisitor* v) final { |
| v->Visit("name", &name); |
| } |
| |
| static constexpr const char* _type_key = "EnvFunc"; |
| TVM_DECLARE_NODE_TYPE_INFO(EnvFuncNode, Node); |
| }; |
| |
| /*! |
| * \brief A serializable function backed by TVM's global environment. |
| * |
| * This is a wrapper to enable serializable global PackedFunc. |
| * An EnvFunc is saved by its name in the global registry |
| * under the assumption that the same function is registered during load. |
| */ |
| class EnvFunc : public NodeRef { |
| public: |
| EnvFunc() {} |
| explicit EnvFunc(NodePtr<Node> n) : NodeRef(n) {} |
| /*! \return The internal global function pointer */ |
| const EnvFuncNode* operator->() const { |
| return static_cast<EnvFuncNode*>(node_.get()); |
| } |
| /*! |
| * \brief Invoke the function. |
| * \param args The arguments |
| * \returns The return value. |
| */ |
| template<typename... Args> |
| runtime::TVMRetValue operator()(Args&&... args) const { |
| const EnvFuncNode* n = operator->(); |
| CHECK(n != nullptr); |
| return n->func(std::forward<Args>(args)...); |
| } |
| /*! |
| * \brief Get a global function based on the name. |
| * \param name The name of the global function. |
| * \return The created global function. |
| * \note The function can be unique |
| */ |
| TVM_DLL static EnvFunc Get(const std::string& name); |
| /*! \brief specify container node */ |
| using ContainerType = EnvFuncNode; |
| }; |
| |
| /*! |
| * \brief Please refer to \ref TypedEnvFuncAnchor "TypedEnvFunc<R(Args..)>" |
| */ |
| template<typename FType> |
| class TypedEnvFunc; |
| |
| /*! |
| * \anchor TypedEnvFuncAnchor |
| * \brief A typed version of EnvFunc. |
| * It is backed by a GlobalFuncNode internally. |
| * |
| * \tparam R The return value of the function. |
| * \tparam Args The argument signature of the function. |
| * \sa EnvFunc |
| */ |
| template<typename R, typename... Args> |
| class TypedEnvFunc<R(Args...)> : public NodeRef { |
| public: |
| /*! \brief short hand for this function type */ |
| using TSelf = TypedEnvFunc<R(Args...)>; |
| TypedEnvFunc() {} |
| explicit TypedEnvFunc(NodePtr<Node> n) : NodeRef(n) {} |
| /*! |
| * \brief Assign global function to a TypedEnvFunc |
| * \param other Another global function. |
| * \return reference to self. |
| */ |
| TSelf& operator=(const EnvFunc& other) { |
| this->node_ = other.node_; |
| return *this; |
| } |
| /*! \return The internal global function pointer */ |
| const EnvFuncNode* operator->() const { |
| return static_cast<EnvFuncNode*>(node_.get()); |
| } |
| /*! |
| * \brief Invoke the function. |
| * \param args The arguments |
| * \returns The return value. |
| */ |
| R operator()(Args... args) const { |
| const EnvFuncNode* n = operator->(); |
| CHECK(n != nullptr); |
| return runtime::detail::typed_packed_call_dispatcher<R> |
| ::run(n->func, std::forward<Args>(args)...); |
| } |
| /*! \brief specify container node */ |
| using ContainerType = EnvFuncNode; |
| }; |
| |
| } // namespace tvm |
| #endif // TVM_API_REGISTRY_H_ |