include/llvm/ExecutionEngine/Orc/NullResolver.h

   1 //===------ NullResolver.h - Reject symbol lookup requests ------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 //   Defines a RuntimeDyld::SymbolResolver subclass that rejects all symbol
  10 // resolution requests, for clients that have no cross-object fixups.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_EXECUTIONENGINE_ORC_NULLRESOLVER_H
  15 #define LLVM_EXECUTIONENGINE_ORC_NULLRESOLVER_H
  16
  17 #include "llvm/ExecutionEngine/Orc/Legacy.h"
  18 #include "llvm/ExecutionEngine/RuntimeDyld.h"
  19
  20 namespace llvm {
  21 namespace orc {
  22
  23 class NullResolver : public SymbolResolver {
  24 public:
  25   SymbolNameSet getResponsibilitySet(const SymbolNameSet &Symbols) final;
  26
  27   SymbolNameSet lookup(std::shared_ptr<AsynchronousSymbolQuery> Query,
  28                        SymbolNameSet Symbols) final;
  29 };
  30
  31 /// SymbolResolver impliementation that rejects all resolution requests.
  32 /// Useful for clients that have no cross-object fixups.
  33 class NullLegacyResolver : public LegacyJITSymbolResolver {
  34 public:
  35   JITSymbol findSymbol(const std::string &Name) final;
  36
  37   JITSymbol findSymbolInLogicalDylib(const std::string &Name) final;
  38 };
  39
  40 } // End namespace orc.
  41 } // End namespace llvm.
  42
  43 #endif // LLVM_EXECUTIONENGINE_ORC_NULLRESOLVER_H