1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// UNSUPPORTED: libcpp-has-no-threads
11
12// <mutex>
13
14// template <class Mutex> class unique_lock;
15
16// void unlock();
17
18#include <mutex>
19#include <cassert>
20
21#include "test_macros.h"
22
23bool unlock_called = false;
24
25struct mutex
26{
27    void lock() {}
28    void unlock() {unlock_called = true;}
29};
30
31mutex m;
32
33int main()
34{
35    std::unique_lock<mutex> lk(m);
36    lk.unlock();
37    assert(unlock_called == true);
38    assert(lk.owns_lock() == false);
39#ifndef TEST_HAS_NO_EXCEPTIONS
40    try
41    {
42        lk.unlock();
43        assert(false);
44    }
45    catch (std::system_error& e)
46    {
47        assert(e.code().value() == EPERM);
48    }
49#endif
50    lk.release();
51#ifndef TEST_HAS_NO_EXCEPTIONS
52    try
53    {
54        lk.unlock();
55        assert(false);
56    }
57    catch (std::system_error& e)
58    {
59        assert(e.code().value() == EPERM);
60    }
61#endif
62}
63