clang  9.0.0svn
MPIBugReporter.h
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1 //===-- MPIBugReporter.h - bug reporter -----------------------*- 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 defines prefabricated reports which are emitted in
11 /// case of MPI related bugs, detected by path-sensitive analysis.
12 ///
13 //===----------------------------------------------------------------------===//
14 
15 #ifndef LLVM_CLANG_LIB_STATICANALYZER_CHECKERS_MPICHECKER_MPIBUGREPORTER_H
16 #define LLVM_CLANG_LIB_STATICANALYZER_CHECKERS_MPICHECKER_MPIBUGREPORTER_H
17 
18 #include "MPITypes.h"
20 
21 namespace clang {
22 namespace ento {
23 namespace mpi {
24 
26 public:
28  UnmatchedWaitBugType.reset(new BugType(&CB, "Unmatched wait", MPIError));
29  DoubleNonblockingBugType.reset(
30  new BugType(&CB, "Double nonblocking", MPIError));
31  MissingWaitBugType.reset(new BugType(&CB, "Missing wait", MPIError));
32  }
33 
34  /// Report duplicate request use by nonblocking calls without intermediate
35  /// wait.
36  ///
37  /// \param MPICallEvent MPI call that caused the double nonblocking
38  /// \param Req request that was used by two nonblocking calls in sequence
39  /// \param RequestRegion memory region of the request
40  /// \param ExplNode node in the graph the bug appeared at
41  /// \param BReporter bug reporter for current context
42  void reportDoubleNonblocking(const CallEvent &MPICallEvent,
43  const Request &Req,
44  const MemRegion *const RequestRegion,
45  const ExplodedNode *const ExplNode,
46  BugReporter &BReporter) const;
47 
48  /// Report a missing wait for a nonblocking call.
49  ///
50  /// \param Req request that is not matched by a wait
51  /// \param RequestRegion memory region of the request
52  /// \param ExplNode node in the graph the bug appeared at
53  /// \param BReporter bug reporter for current context
54  void reportMissingWait(const Request &Req,
55  const MemRegion *const RequestRegion,
56  const ExplodedNode *const ExplNode,
57  BugReporter &BReporter) const;
58 
59  /// Report a wait on a request that has not been used at all before.
60  ///
61  /// \param CE wait call that uses the request
62  /// \param RequestRegion memory region of the request
63  /// \param ExplNode node in the graph the bug appeared at
64  /// \param BReporter bug reporter for current context
65  void reportUnmatchedWait(const CallEvent &CE,
66  const MemRegion *const RequestRegion,
67  const ExplodedNode *const ExplNode,
68  BugReporter &BReporter) const;
69 
70 private:
71  const std::string MPIError = "MPI Error";
72 
73  // path-sensitive bug types
74  std::unique_ptr<BugType> UnmatchedWaitBugType;
75  std::unique_ptr<BugType> MissingWaitBugType;
76  std::unique_ptr<BugType> DoubleNonblockingBugType;
77 
78  /// Bug visitor class to find the node where the request region was previously
79  /// used in order to include it into the BugReport path.
80  class RequestNodeVisitor : public BugReporterVisitor {
81  public:
82  RequestNodeVisitor(const MemRegion *const MemoryRegion,
83  const std::string &ErrText)
84  : RequestRegion(MemoryRegion), ErrorText(ErrText) {}
85 
86  void Profile(llvm::FoldingSetNodeID &ID) const override {
87  static int X = 0;
88  ID.AddPointer(&X);
89  ID.AddPointer(RequestRegion);
90  }
91 
92  std::shared_ptr<PathDiagnosticPiece> VisitNode(const ExplodedNode *N,
93  BugReporterContext &BRC,
94  BugReport &BR) override;
95 
96  private:
97  const MemRegion *const RequestRegion;
98  bool IsNodeFound = false;
99  std::string ErrorText;
100  };
101 };
102 
103 } // end of namespace: mpi
104 } // end of namespace: ento
105 } // end of namespace: clang
106 
107 #endif
This file provides definitions to model concepts of MPI.
MemRegion - The root abstract class for all memory regions.
Definition: MemRegion.h:94
void reportDoubleNonblocking(const CallEvent &MPICallEvent, const Request &Req, const MemRegion *const RequestRegion, const ExplodedNode *const ExplNode, BugReporter &BReporter) const
Report duplicate request use by nonblocking calls without intermediate wait.
void reportUnmatchedWait(const CallEvent &CE, const MemRegion *const RequestRegion, const ExplodedNode *const ExplNode, BugReporter &BReporter) const
Report a wait on a request that has not been used at all before.
void reportMissingWait(const Request &Req, const MemRegion *const RequestRegion, const ExplodedNode *const ExplNode, BugReporter &BReporter) const
Report a missing wait for a nonblocking call.
BugReporter is a utility class for generating PathDiagnostics for analysis.
Definition: BugReporter.h:421
MPIBugReporter(const CheckerBase &CB)
Dataflow Directional Tag Classes.
Represents an abstract call to a function or method along a particular path.
Definition: CallEvent.h:138
X
Add a minimal nested name specifier fixit hint to allow lookup of a tag name from an outer enclosing ...
Definition: SemaDecl.cpp:14423
This class provides an interface through which checkers can create individual bug reports...
Definition: BugReporter.h:75