blob: c940ad563f7ca5a6ba1b546b73f623818a4819d1 (
plain)
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
|
// RUN: %clang_analyze_cc1 -analyzer-checker=alpha.unix.BlockInCriticalSection -std=c++11 -verify %s
void sleep(int x) {}
namespace std {
struct mutex {
void lock() {}
void unlock() {}
};
}
void testBlockInCriticalSection() {
std::mutex m;
m.lock();
sleep(3); // expected-warning {{A blocking function %s is called inside a critical section}}
m.unlock();
}
void testBlockInCriticalSectionWithNestedMutexes() {
std::mutex m, n, k;
m.lock();
n.lock();
k.lock();
sleep(3); // expected-warning {{A blocking function %s is called inside a critical section}}
k.unlock();
sleep(5); // expected-warning {{A blocking function %s is called inside a critical section}}
n.unlock();
sleep(3); // expected-warning {{A blocking function %s is called inside a critical section}}
m.unlock();
sleep(3); // no-warning
}
void f() {
sleep(1000); // expected-warning {{A blocking function %s is called inside a critical section}}
}
void testBlockInCriticalSectionInterProcedural() {
std::mutex m;
m.lock();
f();
m.unlock();
}
void testBlockInCriticalSectionUnexpectedUnlock() {
std::mutex m;
m.unlock();
sleep(1); // no-warning
m.lock();
sleep(1); // expected-warning {{A blocking function %s is called inside a critical section}}
}
|
