1 //===--- IncrementalExecutor.h - Incremental Execution ----------*- 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 // This file implements the class which performs incremental code execution.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_CLANG_LIB_INTERPRETER_INCREMENTALEXECUTOR_H
14 #define LLVM_CLANG_LIB_INTERPRETER_INCREMENTALEXECUTOR_H
15 
16 #include "llvm/ADT/DenseMap.h"
17 #include "llvm/ADT/StringRef.h"
18 #include "llvm/ExecutionEngine/Orc/ExecutionUtils.h"
19 
20 #include <memory>
21 
22 namespace llvm {
23 class Error;
24 class Module;
25 namespace orc {
26 class LLJIT;
27 class ThreadSafeContext;
28 } // namespace orc
29 } // namespace llvm
30 
31 namespace clang {
32 
33 struct PartialTranslationUnit;
34 class TargetInfo;
35 
36 class IncrementalExecutor {
37   using CtorDtorIterator = llvm::orc::CtorDtorIterator;
38   std::unique_ptr<llvm::orc::LLJIT> Jit;
39   llvm::orc::ThreadSafeContext &TSCtx;
40 
41   llvm::DenseMap<const PartialTranslationUnit *, llvm::orc::ResourceTrackerSP>
42       ResourceTrackers;
43 
44 public:
45   enum SymbolNameKind { IRName, LinkerName };
46 
47   IncrementalExecutor(llvm::orc::ThreadSafeContext &TSC, llvm::Error &Err,
48                       const clang::TargetInfo &TI);
49   ~IncrementalExecutor();
50 
51   llvm::Error addModule(PartialTranslationUnit &PTU);
52   llvm::Error removeModule(PartialTranslationUnit &PTU);
53   llvm::Error runCtors() const;
54   llvm::Expected<llvm::JITTargetAddress>
55   getSymbolAddress(llvm::StringRef Name, SymbolNameKind NameKind) const;
56   llvm::orc::LLJIT *getExecutionEngine() const { return Jit.get(); }
57 };
58 
59 } // end namespace clang
60 
61 #endif // LLVM_CLANG_LIB_INTERPRETER_INCREMENTALEXECUTOR_H
62