1 //===--- AvoidSpinlockCheck.cpp - clang-tidy-------------------------------===//
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 #include "AvoidSpinlockCheck.h"
10 #include "clang/AST/ASTContext.h"
11 #include "clang/ASTMatchers/ASTMatchFinder.h"
12 
13 using namespace clang::ast_matchers;
14 
15 namespace clang {
16 namespace tidy {
17 namespace darwin {
18 
registerMatchers(MatchFinder * Finder)19 void AvoidSpinlockCheck::registerMatchers(MatchFinder *Finder) {
20   Finder->addMatcher(
21       callExpr(callee((functionDecl(hasAnyName(
22                    "OSSpinlockLock", "OSSpinlockUnlock", "OSSpinlockTry")))))
23           .bind("spinlock"),
24       this);
25 }
26 
check(const MatchFinder::MatchResult & Result)27 void AvoidSpinlockCheck::check(const MatchFinder::MatchResult &Result) {
28   const auto *MatchedExpr = Result.Nodes.getNodeAs<CallExpr>("spinlock");
29   diag(MatchedExpr->getBeginLoc(),
30        "use os_unfair_lock_lock() or dispatch queue APIs instead of the "
31        "deprecated OSSpinLock");
32 }
33 
34 }  // namespace darwin
35 }  // namespace tidy
36 }  // namespace clang
37