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Diffstat (limited to 'include/llvm/ExecutionEngine/Orc/ObjectTransformLayer.h')
-rw-r--r-- | include/llvm/ExecutionEngine/Orc/ObjectTransformLayer.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/include/llvm/ExecutionEngine/Orc/ObjectTransformLayer.h b/include/llvm/ExecutionEngine/Orc/ObjectTransformLayer.h new file mode 100644 index 0000000..7af6620 --- /dev/null +++ b/include/llvm/ExecutionEngine/Orc/ObjectTransformLayer.h @@ -0,0 +1,112 @@ +//===- ObjectTransformLayer.h - Run all objects through functor -*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// Run all objects passed in through a user supplied functor. +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_EXECUTIONENGINE_ORC_OBJECTTRANSFORMLAYER_H +#define LLVM_EXECUTIONENGINE_ORC_OBJECTTRANSFORMLAYER_H + +#include "JITSymbol.h" + +namespace llvm { +namespace orc { + +/// @brief Object mutating layer. +/// +/// This layer accepts sets of ObjectFiles (via addObjectSet). 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 ObjectTransformLayer { +public: + /// @brief Handle to a set of added objects. + typedef typename BaseLayerT::ObjSetHandleT ObjSetHandleT; + + /// @brief Construct an ObjectTransformLayer with the given BaseLayer + ObjectTransformLayer(BaseLayerT &BaseLayer, + TransformFtor Transform = TransformFtor()) + : BaseLayer(BaseLayer), Transform(std::move(Transform)) {} + + /// @brief 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 ObjSetT, typename MemoryManagerPtrT, + typename SymbolResolverPtrT> + ObjSetHandleT addObjectSet(ObjSetT &Objects, MemoryManagerPtrT MemMgr, + SymbolResolverPtrT Resolver) { + + for (auto I = Objects.begin(), E = Objects.end(); I != E; ++I) + *I = Transform(std::move(*I)); + + return BaseLayer.addObjectSet(Objects, std::move(MemMgr), + std::move(Resolver)); + } + + /// @brief Remove the object set associated with the handle H. + void removeObjectSet(ObjSetHandleT H) { BaseLayer.removeObjectSet(H); } + + /// @brief 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); + } + + /// @brief Get the address of the given symbol in the context of the set of + /// objects represented by the handle H. This call is forwarded to the + /// base layer's implementation. + /// @param H The handle for 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(ObjSetHandleT H, const std::string &Name, + bool ExportedSymbolsOnly) { + return BaseLayer.findSymbolIn(H, Name, ExportedSymbolsOnly); + } + + /// @brief Immediately emit and finalize the object set represented by the + /// given handle. + /// @param H Handle for object set to emit/finalize. + void emitAndFinalize(ObjSetHandleT H) { BaseLayer.emitAndFinalize(H); } + + /// @brief Map section addresses for the objects associated with the handle H. + void mapSectionAddress(ObjSetHandleT H, const void *LocalAddress, + TargetAddress TargetAddr) { + BaseLayer.mapSectionAddress(H, LocalAddress, TargetAddr); + } + + // Ownership hack. + // FIXME: Remove this as soon as RuntimeDyldELF can apply relocations without + // referencing the original object. + template <typename OwningMBSet> + void takeOwnershipOfBuffers(ObjSetHandleT H, OwningMBSet MBs) { + BaseLayer.takeOwnershipOfBuffers(H, std::move(MBs)); + } + + /// @brief Access the transform functor directly. + TransformFtor &getTransform() { return Transform; } + + /// @brief Access the mumate functor directly. + const TransformFtor &getTransform() const { return Transform; } + +private: + BaseLayerT &BaseLayer; + TransformFtor Transform; +}; + +} // End namespace orc. +} // End namespace llvm. + +#endif // LLVM_EXECUTIONENGINE_ORC_OBJECTTRANSFORMLAYER_H |