LCOV - code coverage report
Current view: top level - include/llvm/ExecutionEngine/Orc - ObjectTransformLayer.h (source / functions) Hit Total Coverage
Test: llvm-toolchain.info Lines: 9 10 90.0 %
Date: 2017-09-14 15:23:50 Functions: 2 3 66.7 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : //===- ObjectTransformLayer.h - Run all objects through functor -*- C++ -*-===//
       2             : //
       3             : //                     The LLVM Compiler Infrastructure
       4             : //
       5             : // This file is distributed under the University of Illinois Open Source
       6             : // License. See LICENSE.TXT for details.
       7             : //
       8             : //===----------------------------------------------------------------------===//
       9             : //
      10             : // Run all objects passed in through a user supplied functor.
      11             : //
      12             : //===----------------------------------------------------------------------===//
      13             : 
      14             : #ifndef LLVM_EXECUTIONENGINE_ORC_OBJECTTRANSFORMLAYER_H
      15             : #define LLVM_EXECUTIONENGINE_ORC_OBJECTTRANSFORMLAYER_H
      16             : 
      17             : #include "llvm/ExecutionEngine/JITSymbol.h"
      18             : #include <algorithm>
      19             : #include <memory>
      20             : #include <string>
      21             : 
      22             : namespace llvm {
      23             : namespace orc {
      24             : 
      25             : /// @brief Object mutating layer.
      26             : ///
      27             : ///   This layer accepts sets of ObjectFiles (via addObject). It
      28             : /// immediately applies the user supplied functor to each object, then adds
      29             : /// the set of transformed objects to the layer below.
      30             : template <typename BaseLayerT, typename TransformFtor>
      31           2 : class ObjectTransformLayer {
      32             : public:
      33             :   /// @brief Handle to a set of added objects.
      34             :   using ObjHandleT = typename BaseLayerT::ObjHandleT;
      35             : 
      36             :   /// @brief Construct an ObjectTransformLayer with the given BaseLayer
      37           0 :   ObjectTransformLayer(BaseLayerT &BaseLayer,
      38             :                        TransformFtor Transform = TransformFtor())
      39           3 :       : BaseLayer(BaseLayer), Transform(std::move(Transform)) {}
      40             : 
      41             :   /// @brief Apply the transform functor to each object in the object set, then
      42             :   ///        add the resulting set of objects to the base layer, along with the
      43             :   ///        memory manager and symbol resolver.
      44             :   ///
      45             :   /// @return A handle for the added objects.
      46             :   template <typename ObjectPtr>
      47           2 :   Expected<ObjHandleT> addObject(ObjectPtr Obj,
      48             :                                  std::shared_ptr<JITSymbolResolver> Resolver) {
      49          14 :     return BaseLayer.addObject(Transform(std::move(Obj)), std::move(Resolver));
      50             :   }
      51             : 
      52             :   /// @brief Remove the object set associated with the handle H.
      53           1 :   Error removeObject(ObjHandleT H) { return BaseLayer.removeObject(H); }
      54             : 
      55             :   /// @brief Search for the given named symbol.
      56             :   /// @param Name The name of the symbol to search for.
      57             :   /// @param ExportedSymbolsOnly If true, search only for exported symbols.
      58             :   /// @return A handle for the given named symbol, if it exists.
      59             :   JITSymbol findSymbol(const std::string &Name, bool ExportedSymbolsOnly) {
      60           1 :     return BaseLayer.findSymbol(Name, ExportedSymbolsOnly);
      61             :   }
      62             : 
      63             :   /// @brief Get the address of the given symbol in the context of the set of
      64             :   ///        objects represented by the handle H. This call is forwarded to the
      65             :   ///        base layer's implementation.
      66             :   /// @param H The handle for the object set to search in.
      67             :   /// @param Name The name of the symbol to search for.
      68             :   /// @param ExportedSymbolsOnly If true, search only for exported symbols.
      69             :   /// @return A handle for the given named symbol, if it is found in the
      70             :   ///         given object set.
      71             :   JITSymbol findSymbolIn(ObjHandleT H, const std::string &Name,
      72             :                          bool ExportedSymbolsOnly) {
      73           1 :     return BaseLayer.findSymbolIn(H, Name, ExportedSymbolsOnly);
      74             :   }
      75             : 
      76             :   /// @brief Immediately emit and finalize the object set represented by the
      77             :   ///        given handle.
      78             :   /// @param H Handle for object set to emit/finalize.
      79             :   Error emitAndFinalize(ObjHandleT H) {
      80           1 :     return BaseLayer.emitAndFinalize(H);
      81             :   }
      82             : 
      83             :   /// @brief Map section addresses for the objects associated with the handle H.
      84             :   void mapSectionAddress(ObjHandleT H, const void *LocalAddress,
      85             :                          JITTargetAddress TargetAddr) {
      86           1 :     BaseLayer.mapSectionAddress(H, LocalAddress, TargetAddr);
      87             :   }
      88             : 
      89             :   /// @brief Access the transform functor directly.
      90             :   TransformFtor &getTransform() { return Transform; }
      91             : 
      92             :   /// @brief Access the mumate functor directly.
      93             :   const TransformFtor &getTransform() const { return Transform; }
      94             : 
      95             : private:
      96             :   BaseLayerT &BaseLayer;
      97             :   TransformFtor Transform;
      98             : };
      99             : 
     100             : } // end namespace orc
     101             : } // end namespace llvm
     102             : 
     103             : #endif // LLVM_EXECUTIONENGINE_ORC_OBJECTTRANSFORMLAYER_H

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