1 //===------ NullResolver.h - Reject symbol lookup requests ------*- 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 //   Defines a RuntimeDyld::SymbolResolver subclass that rejects all symbol
11 // resolution requests, for clients that have no cross-object fixups.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #ifndef LLVM_EXECUTIONENGINE_ORC_NULLRESOLVER_H
16 #define LLVM_EXECUTIONENGINE_ORC_NULLRESOLVER_H
17 
18 #include "llvm/ExecutionEngine/Orc/Legacy.h"
19 #include "llvm/ExecutionEngine/RuntimeDyld.h"
20 
21 namespace llvm {
22 namespace orc {
23 
24 class NullResolver : public SymbolResolver {
25 public:
26   SymbolNameSet getResponsibilitySet(const SymbolNameSet &Symbols) final;
27 
28   SymbolNameSet lookup(std::shared_ptr<AsynchronousSymbolQuery> Query,
29                        SymbolNameSet Symbols) final;
30 };
31 
32 /// SymbolResolver impliementation that rejects all resolution requests.
33 /// Useful for clients that have no cross-object fixups.
34 class NullLegacyResolver : public LegacyJITSymbolResolver {
35 public:
36   JITSymbol findSymbol(const std::string &Name) final;
37 
38   JITSymbol findSymbolInLogicalDylib(const std::string &Name) final;
39 };
40 
41 } // End namespace orc.
42 } // End namespace llvm.
43 
44 #endif // LLVM_EXECUTIONENGINE_ORC_NULLRESOLVER_H
45