b64f8b07c1
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@119395 91177308-0d34-0410-b5e6-96231b3b80d8
38 lines
856 B
C++
38 lines
856 B
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <mutex>
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// template <class Mutex> class unique_lock;
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// template <class Mutex>
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// void swap(unique_lock<Mutex>& x, unique_lock<Mutex>& y);
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#include <mutex>
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#include <cassert>
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struct mutex
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{
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void lock() {}
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void unlock() {}
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};
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mutex m;
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int main()
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{
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std::unique_lock<mutex> lk1(m);
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std::unique_lock<mutex> lk2;
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swap(lk1, lk2);
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assert(lk1.mutex() == nullptr);
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assert(lk1.owns_lock() == false);
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assert(lk2.mutex() == &m);
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assert(lk2.owns_lock() == true);
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}
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