1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
//===--- SpuriouslyWakeUpFunctionsCheck.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 "SpuriouslyWakeUpFunctionsCheck.h"
#include "clang/AST/ASTContext.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
using namespace clang::ast_matchers;
namespace clang::tidy::bugprone {
void SpuriouslyWakeUpFunctionsCheck::registerMatchers(MatchFinder *Finder) {
auto HasUniqueLock = hasDescendant(declRefExpr(
hasDeclaration(varDecl(hasType(recordDecl(classTemplateSpecializationDecl(
hasName("::std::unique_lock"),
hasTemplateArgument(
0, templateArgument(refersToType(qualType(hasDeclaration(
cxxRecordDecl(hasName("::std::mutex"))))))))))))));
auto HasWaitDescendantCpp = hasDescendant(
cxxMemberCallExpr(
anyOf(allOf(hasDescendant(memberExpr(hasDeclaration(functionDecl(
hasName("::std::condition_variable::wait"),
parameterCountIs(1))))),
onImplicitObjectArgument(
declRefExpr(to(varDecl(hasType(references(recordDecl(
hasName("::std::condition_variable")))))))),
HasUniqueLock),
allOf(hasDescendant(memberExpr(hasDeclaration(functionDecl(
hasName("::std::condition_variable::wait_for"),
parameterCountIs(2))))),
onImplicitObjectArgument(
declRefExpr(to(varDecl(hasType(references(recordDecl(
hasName("::std::condition_variable")))))))),
HasUniqueLock),
allOf(hasDescendant(memberExpr(hasDeclaration(functionDecl(
hasName("::std::condition_variable::wait_until"),
parameterCountIs(2))))),
onImplicitObjectArgument(
declRefExpr(to(varDecl(hasType(references(recordDecl(
hasName("::std::condition_variable")))))))),
HasUniqueLock)
))
.bind("wait"));
auto HasWaitDescendantC = hasDescendant(
callExpr(callee(functionDecl(hasAnyName("cnd_wait", "cnd_timedwait"))))
.bind("wait"));
if (getLangOpts().CPlusPlus) {
// Check for `CON54-CPP`
Finder->addMatcher(
ifStmt(HasWaitDescendantCpp,
unless(hasDescendant(mapAnyOf(ifStmt, whileStmt, forStmt, doStmt)
.with(HasWaitDescendantCpp)))),
this);
} else {
// Check for `CON36-C`
Finder->addMatcher(
ifStmt(HasWaitDescendantC,
unless(anyOf(
hasDescendant(mapAnyOf(ifStmt, whileStmt, forStmt, doStmt)
.with(HasWaitDescendantC)),
hasParent(mapAnyOf(whileStmt, forStmt, doStmt)),
hasParent(compoundStmt(
hasParent(mapAnyOf(whileStmt, forStmt, doStmt))))))),
this);
}
}
void SpuriouslyWakeUpFunctionsCheck::check(
const MatchFinder::MatchResult &Result) {
const auto *MatchedWait = Result.Nodes.getNodeAs<CallExpr>("wait");
StringRef WaitName = MatchedWait->getDirectCallee()->getName();
diag(MatchedWait->getExprLoc(),
"'%0' should be placed inside a while statement %select{|or used with a "
"conditional parameter}1")
<< WaitName << (WaitName != "cnd_wait" && WaitName != "cnd_timedwait");
}
} // namespace clang::tidy::bugprone
|
