derek.holloway
7502bf64a4
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84 lines
3.7 KiB
C++
84 lines
3.7 KiB
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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#include "SpuriouslyWakeUpFunctionsCheck.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/ASTMatchers/ASTMatchFinder.h"
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using namespace clang::ast_matchers;
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namespace clang::tidy::bugprone {
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void SpuriouslyWakeUpFunctionsCheck::registerMatchers(MatchFinder *Finder) {
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auto HasUniqueLock = hasDescendant(declRefExpr(
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hasDeclaration(varDecl(hasType(recordDecl(classTemplateSpecializationDecl(
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hasName("::std::unique_lock"),
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hasTemplateArgument(
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0, templateArgument(refersToType(qualType(hasDeclaration(
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cxxRecordDecl(hasName("::std::mutex"))))))))))))));
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auto HasWaitDescendantCpp = hasDescendant(
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cxxMemberCallExpr(
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anyOf(allOf(hasDescendant(memberExpr(hasDeclaration(functionDecl(
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hasName("::std::condition_variable::wait"),
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parameterCountIs(1))))),
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onImplicitObjectArgument(
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declRefExpr(to(varDecl(hasType(references(recordDecl(
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hasName("::std::condition_variable")))))))),
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HasUniqueLock),
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allOf(hasDescendant(memberExpr(hasDeclaration(functionDecl(
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hasName("::std::condition_variable::wait_for"),
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parameterCountIs(2))))),
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onImplicitObjectArgument(
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declRefExpr(to(varDecl(hasType(references(recordDecl(
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hasName("::std::condition_variable")))))))),
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HasUniqueLock),
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allOf(hasDescendant(memberExpr(hasDeclaration(functionDecl(
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hasName("::std::condition_variable::wait_until"),
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parameterCountIs(2))))),
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onImplicitObjectArgument(
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declRefExpr(to(varDecl(hasType(references(recordDecl(
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hasName("::std::condition_variable")))))))),
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HasUniqueLock)))
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.bind("wait"));
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auto HasWaitDescendantC = hasDescendant(
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callExpr(callee(functionDecl(hasAnyName("cnd_wait", "cnd_timedwait"))))
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.bind("wait"));
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if (getLangOpts().CPlusPlus) {
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// Check for `CON54-CPP`
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Finder->addMatcher(
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ifStmt(HasWaitDescendantCpp,
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unless(hasDescendant(mapAnyOf(ifStmt, whileStmt, forStmt, doStmt)
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.with(HasWaitDescendantCpp)))),
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this);
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} else {
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// Check for `CON36-C`
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Finder->addMatcher(
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ifStmt(HasWaitDescendantC,
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unless(anyOf(
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hasDescendant(mapAnyOf(ifStmt, whileStmt, forStmt, doStmt)
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.with(HasWaitDescendantC)),
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hasParent(mapAnyOf(whileStmt, forStmt, doStmt)),
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hasParent(compoundStmt(
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hasParent(mapAnyOf(whileStmt, forStmt, doStmt))))))),
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this);
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}
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}
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void SpuriouslyWakeUpFunctionsCheck::check(
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const MatchFinder::MatchResult &Result) {
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const auto *MatchedWait = Result.Nodes.getNodeAs<CallExpr>("wait");
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const StringRef WaitName = MatchedWait->getDirectCallee()->getName();
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diag(MatchedWait->getExprLoc(),
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"'%0' should be placed inside a while statement %select{|or used with a "
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"conditional parameter}1")
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<< WaitName << (WaitName != "cnd_wait" && WaitName != "cnd_timedwait");
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}
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} // namespace clang::tidy::bugprone
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