Coverage Report

Created: 2019-07-24 05:18

/Users/buildslave/jenkins/workspace/clang-stage2-coverage-R/llvm/tools/clang/lib/StaticAnalyzer/Checkers/MPI-Checker/MPIBugReporter.h
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//===-- MPIBugReporter.h - bug reporter -----------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// This file defines prefabricated reports which are emitted in
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/// case of MPI related bugs, detected by path-sensitive analysis.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_LIB_STATICANALYZER_CHECKERS_MPICHECKER_MPIBUGREPORTER_H
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#define LLVM_CLANG_LIB_STATICANALYZER_CHECKERS_MPICHECKER_MPIBUGREPORTER_H
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#include "MPITypes.h"
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#include "clang/StaticAnalyzer/Core/BugReporter/BugType.h"
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namespace clang {
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namespace ento {
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namespace mpi {
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class MPIBugReporter {
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public:
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  MPIBugReporter(const CheckerBase &CB) {
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    UnmatchedWaitBugType.reset(new BugType(&CB, "Unmatched wait", MPIError));
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    DoubleNonblockingBugType.reset(
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        new BugType(&CB, "Double nonblocking", MPIError));
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    MissingWaitBugType.reset(new BugType(&CB, "Missing wait", MPIError));
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  }
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  /// Report duplicate request use by nonblocking calls without intermediate
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  /// wait.
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  ///
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  /// \param MPICallEvent MPI call that caused the double nonblocking
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  /// \param Req request that was used by two nonblocking calls in sequence
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  /// \param RequestRegion memory region of the request
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  /// \param ExplNode node in the graph the bug appeared at
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  /// \param BReporter bug reporter for current context
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  void reportDoubleNonblocking(const CallEvent &MPICallEvent,
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                               const Request &Req,
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                               const MemRegion *const RequestRegion,
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                               const ExplodedNode *const ExplNode,
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                              BugReporter &BReporter) const;
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  /// Report a missing wait for a nonblocking call.
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  ///
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  /// \param Req request that is not matched by a wait
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  /// \param RequestRegion memory region of the request
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  /// \param ExplNode node in the graph the bug appeared at
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  /// \param BReporter bug reporter for current context
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  void reportMissingWait(const Request &Req,
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                         const MemRegion *const RequestRegion,
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                         const ExplodedNode *const ExplNode,
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                         BugReporter &BReporter) const;
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  /// Report a wait on a request that has not been used at all before.
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  ///
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  /// \param CE wait call that uses the request
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  /// \param RequestRegion memory region of the request
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  /// \param ExplNode node in the graph the bug appeared at
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  /// \param BReporter bug reporter for current context
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  void reportUnmatchedWait(const CallEvent &CE,
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                           const MemRegion *const RequestRegion,
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                           const ExplodedNode *const ExplNode,
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                           BugReporter &BReporter) const;
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private:
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  const std::string MPIError = "MPI Error";
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  // path-sensitive bug types
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  std::unique_ptr<BugType> UnmatchedWaitBugType;
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  std::unique_ptr<BugType> MissingWaitBugType;
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  std::unique_ptr<BugType> DoubleNonblockingBugType;
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  /// Bug visitor class to find the node where the request region was previously
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  /// used in order to include it into the BugReport path.
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  class RequestNodeVisitor : public BugReporterVisitor {
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  public:
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    RequestNodeVisitor(const MemRegion *const MemoryRegion,
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                       const std::string &ErrText)
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        : RequestRegion(MemoryRegion), ErrorText(ErrText) {}
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    void Profile(llvm::FoldingSetNodeID &ID) const override {
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      static int X = 0;
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      ID.AddPointer(&X);
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      ID.AddPointer(RequestRegion);
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    }
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    std::shared_ptr<PathDiagnosticPiece> VisitNode(const ExplodedNode *N,
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                                                   BugReporterContext &BRC,
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                                                   BugReport &BR) override;
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  private:
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    const MemRegion *const RequestRegion;
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    bool IsNodeFound = false;
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    std::string ErrorText;
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  };
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};
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} // end of namespace: mpi
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} // end of namespace: ento
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} // end of namespace: clang
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#endif