1 //===-- MPITypes.h - Functionality to model MPI concepts --------*- 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 /// \file
10 /// This file provides definitions to model concepts of MPI. The mpi::Request
11 /// class defines a wrapper class, in order to make MPI requests trackable for
12 /// path-sensitive analysis.
13 ///
14 //===----------------------------------------------------------------------===//
15 
16 #ifndef LLVM_CLANG_LIB_STATICANALYZER_CHECKERS_MPICHECKER_MPITYPES_H
17 #define LLVM_CLANG_LIB_STATICANALYZER_CHECKERS_MPICHECKER_MPITYPES_H
18 
19 #include "clang/StaticAnalyzer/Checkers/MPIFunctionClassifier.h"
20 #include "clang/StaticAnalyzer/Core/PathSensitive/CallEvent.h"
21 #include "llvm/ADT/SmallSet.h"
22 
23 namespace clang {
24 namespace ento {
25 namespace mpi {
26 
27 class Request {
28 public:
29   enum State : unsigned char { Nonblocking, Wait };
30 
31   Request(State S) : CurrentState{S} {}
32 
33   void Profile(llvm::FoldingSetNodeID &Id) const {
34     Id.AddInteger(CurrentState);
35   }
36 
37   bool operator==(const Request &ToCompare) const {
38     return CurrentState == ToCompare.CurrentState;
39   }
40 
41   const State CurrentState;
42 };
43 
44 // The RequestMap stores MPI requests which are identified by their memory
45 // region. Requests are used in MPI to complete nonblocking operations with wait
46 // operations. A custom map implementation is used, in order to make it
47 // available in an arbitrary amount of translation units.
48 struct RequestMap {};
49 typedef llvm::ImmutableMap<const clang::ento::MemRegion *,
50                            clang::ento::mpi::Request>
51     RequestMapImpl;
52 
53 } // end of namespace: mpi
54 
55 template <>
56 struct ProgramStateTrait<mpi::RequestMap>
57     : public ProgramStatePartialTrait<mpi::RequestMapImpl> {
58   static void *GDMIndex() {
59     static int index = 0;
60     return &index;
61   }
62 };
63 
64 } // end of namespace: ento
65 } // end of namespace: clang
66 #endif
67