1 //===--- SignalHandlerCheck.h - clang-tidy ----------------------*- 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 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_SIGNALHANDLERCHECK_H 10 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_SIGNALHANDLERCHECK_H 11 12 #include "../ClangTidyCheck.h" 13 #include "llvm/ADT/StringSet.h" 14 15 namespace clang { 16 namespace tidy { 17 namespace bugprone { 18 19 /// Checker for signal handler functions. 20 /// 21 /// For the user-facing documentation see: 22 /// http://clang.llvm.org/extra/clang-tidy/checks/bugprone-signal-handler-check.html 23 class SignalHandlerCheck : public ClangTidyCheck { 24 public: 25 enum class AsyncSafeFunctionSetType { Minimal, POSIX }; 26 27 SignalHandlerCheck(StringRef Name, ClangTidyContext *Context); 28 void storeOptions(ClangTidyOptions::OptionMap &Opts) override; 29 bool isLanguageVersionSupported(const LangOptions &LangOpts) const override; 30 void registerMatchers(ast_matchers::MatchFinder *Finder) override; 31 void check(const ast_matchers::MatchFinder::MatchResult &Result) override; 32 33 private: 34 void reportBug(const FunctionDecl *CalledFunction, const Expr *CallOrRef, 35 const CallExpr *SignalCall, const FunctionDecl *HandlerDecl); 36 bool isSystemCallAllowed(const FunctionDecl *FD) const; 37 38 AsyncSafeFunctionSetType AsyncSafeFunctionSet; 39 llvm::StringSet<> &ConformingFunctions; 40 41 static llvm::StringSet<> MinimalConformingFunctions; 42 static llvm::StringSet<> POSIXConformingFunctions; 43 }; 44 45 } // namespace bugprone 46 } // namespace tidy 47 } // namespace clang 48 49 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_SIGNALHANDLERCHECK_H 50