ThreadCanceltypeAsynchronousCheck.cpp

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//===--- ThreadCanceltypeAsynchronousCheck.cpp - clang-tidy ---------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
 
#include "ThreadCanceltypeAsynchronousCheck.h"
#include "clang/AST/ASTContext.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/Lex/Preprocessor.h"
 
using namespace clang::ast_matchers;
 
namespace clang::tidy::concurrency {
 
void ThreadCanceltypeAsynchronousCheck::registerMatchers(MatchFinder *Finder) {
  Finder->addMatcher(
      callExpr(
          callee(functionDecl(hasName("::pthread_setcanceltype"))),
          argumentCountIs(2),
          hasArgument(0, isExpandedFromMacro("PTHREAD_CANCEL_ASYNCHRONOUS")))
          .bind("setcanceltype"),
      this);
}
 
void ThreadCanceltypeAsynchronousCheck::check(
    const MatchFinder::MatchResult &Result) {
  const auto *MatchedExpr = Result.Nodes.getNodeAs<Expr>("setcanceltype");
  diag(MatchedExpr->getBeginLoc(), "the cancel type for a pthread should not "
                                   "be 'PTHREAD_CANCEL_ASYNCHRONOUS'");
}
 
} // namespace clang::tidy::concurrency