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File indexing completed on 2026-05-10 08:43:53
0001 //===- LazyObjectLinkingLayer.h - Link objects on first fn call -*- C++ -*-===// 0002 // 0003 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 0004 // See https://llvm.org/LICENSE.txt for license information. 0005 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 0006 // 0007 //===----------------------------------------------------------------------===// 0008 // 0009 // Link object files lazily on first call. 0010 // 0011 //===----------------------------------------------------------------------===// 0012 #ifndef LLVM_EXECUTIONENGINE_ORC_LAZYOBJECTLINKINGLAYER_H 0013 #define LLVM_EXECUTIONENGINE_ORC_LAZYOBJECTLINKINGLAYER_H 0014 0015 #include "llvm/ExecutionEngine/Orc/Core.h" 0016 #include "llvm/ExecutionEngine/Orc/Layer.h" 0017 0018 namespace llvm::orc { 0019 0020 class ObjectLinkingLayer; 0021 class LazyReexportsManager; 0022 class RedirectableSymbolManager; 0023 0024 /// LazyObjectLinkingLayer is an adapter for ObjectLinkingLayer that builds 0025 /// lazy reexports for all function symbols in objects that are/ added to defer 0026 /// linking until the first call to a function defined in the object. 0027 /// 0028 /// Linking is performed by emitting the object file via the base 0029 /// ObjectLinkingLayer. 0030 /// 0031 /// No partitioning is performed: The first call to any function in the object 0032 /// will trigger linking of the whole object. 0033 /// 0034 /// References to data symbols are not lazy and will trigger immediate linking 0035 /// (same os ObjectlinkingLayer). 0036 class LazyObjectLinkingLayer : public ObjectLayer { 0037 public: 0038 LazyObjectLinkingLayer(ObjectLinkingLayer &BaseLayer, 0039 LazyReexportsManager &LRMgr); 0040 0041 /// Add an object file to the JITDylib targeted by the given tracker. 0042 llvm::Error add(llvm::orc::ResourceTrackerSP RT, 0043 std::unique_ptr<MemoryBuffer> O, 0044 MaterializationUnit::Interface I) override; 0045 0046 void emit(std::unique_ptr<MaterializationResponsibility> R, 0047 std::unique_ptr<MemoryBuffer> O) override; 0048 0049 private: 0050 class RenamerPlugin; 0051 0052 ObjectLinkingLayer &BaseLayer; 0053 LazyReexportsManager &LRMgr; 0054 }; 0055 0056 } // namespace llvm::orc 0057 0058 #endif // LLVM_EXECUTIONENGINE_ORC_LAZYOBJECTLINKINGLAYER_H
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