37 lines
782 B
C++
37 lines
782 B
C++
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//===----------------------------------------------------------------------===//
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//
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. 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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// void swap(unique_lock& u);
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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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lk1.swap(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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