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//===- ObjectTransformLayer.h - Run all objects through functor -*- C++ -*-===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// // // Run all objects passed in through a user supplied functor. // //===----------------------------------------------------------------------===// #ifndef LLVM_EXECUTIONENGINE_ORC_OBJECTTRANSFORMLAYER_H #define LLVM_EXECUTIONENGINE_ORC_OBJECTTRANSFORMLAYER_H #include "llvm/ExecutionEngine/JITSymbol.h" #include "llvm/ExecutionEngine/Orc/Layer.h" #include <algorithm> #include <memory> #include <string> namespace llvm { namespace orc { class ObjectTransformLayer : public ObjectLayer { public: using TransformFunction = std::function<Expected<std::unique_ptr<MemoryBuffer>>( std::unique_ptr<MemoryBuffer>)>; ObjectTransformLayer(ExecutionSession &ES, ObjectLayer &BaseLayer, TransformFunction Transform = TransformFunction()); void emit(MaterializationResponsibility R, std::unique_ptr<MemoryBuffer> O) override; void setTransform(TransformFunction Transform) { this->Transform = std::move(Transform); } private: ObjectLayer &BaseLayer; TransformFunction Transform; }; /// Object mutating layer. /// /// This layer accepts sets of ObjectFiles (via addObject). It /// immediately applies the user supplied functor to each object, then adds /// the set of transformed objects to the layer below. template <typename BaseLayerT, typename TransformFtor> class LegacyObjectTransformLayer { public: /// Construct an ObjectTransformLayer with the given BaseLayer LLVM_ATTRIBUTE_DEPRECATED( LegacyObjectTransformLayer(BaseLayerT &BaseLayer, TransformFtor Transform = TransformFtor()), "ORCv1 layers (layers with the 'Legacy' prefix) are deprecated. Please " "use " "the ORCv2 ObjectTransformLayer instead"); /// Legacy layer constructor with deprecation acknowledgement. LegacyObjectTransformLayer(ORCv1DeprecationAcknowledgement, BaseLayerT &BaseLayer, TransformFtor Transform = TransformFtor()) : BaseLayer(BaseLayer), Transform(std::move(Transform)) {} /// Apply the transform functor to each object in the object set, then /// add the resulting set of objects to the base layer, along with the /// memory manager and symbol resolver. /// /// @return A handle for the added objects. template <typename ObjectPtr> Error addObject(VModuleKey K, ObjectPtr Obj) { return BaseLayer.addObject(std::move(K), Transform(std::move(Obj))); } /// Remove the object set associated with the VModuleKey K. Error removeObject(VModuleKey K) { return BaseLayer.removeObject(K); } /// Search for the given named symbol. /// @param Name The name of the symbol to search for. /// @param ExportedSymbolsOnly If true, search only for exported symbols. /// @return A handle for the given named symbol, if it exists. JITSymbol findSymbol(const std::string &Name, bool ExportedSymbolsOnly) { return BaseLayer.findSymbol(Name, ExportedSymbolsOnly); } /// Get the address of the given symbol in the context of the set of /// objects represented by the VModuleKey K. This call is forwarded to /// the base layer's implementation. /// @param K The VModuleKey associated with the object set to search in. /// @param Name The name of the symbol to search for. /// @param ExportedSymbolsOnly If true, search only for exported symbols. /// @return A handle for the given named symbol, if it is found in the /// given object set. JITSymbol findSymbolIn(VModuleKey K, const std::string &Name, bool ExportedSymbolsOnly) { return BaseLayer.findSymbolIn(K, Name, ExportedSymbolsOnly); } /// Immediately emit and finalize the object set represented by the /// given VModuleKey K. Error emitAndFinalize(VModuleKey K) { return BaseLayer.emitAndFinalize(K); } /// Map section addresses for the objects associated with the /// VModuleKey K. void mapSectionAddress(VModuleKey K, const void *LocalAddress, JITTargetAddress TargetAddr) { BaseLayer.mapSectionAddress(K, LocalAddress, TargetAddr); } /// Access the transform functor directly. TransformFtor &getTransform() { return Transform; } /// Access the mumate functor directly. const TransformFtor &getTransform() const { return Transform; } private: BaseLayerT &BaseLayer; TransformFtor Transform; }; template <typename BaseLayerT, typename TransformFtor> LegacyObjectTransformLayer<BaseLayerT, TransformFtor>:: LegacyObjectTransformLayer(BaseLayerT &BaseLayer, TransformFtor Transform) : BaseLayer(BaseLayer), Transform(std::move(Transform)) {} } // end namespace orc } // end namespace llvm #endif // LLVM_EXECUTIONENGINE_ORC_OBJECTTRANSFORMLAYER_H