b64f8b07c1
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@119395 91177308-0d34-0410-b5e6-96231b3b80d8
30 lines
720 B
C++
30 lines
720 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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// bool owns_lock() const;
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#include <mutex>
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#include <cassert>
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std::mutex m;
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int main()
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{
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std::unique_lock<std::mutex> lk0;
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assert(lk0.owns_lock() == false);
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std::unique_lock<std::mutex> lk1(m);
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assert(lk1.owns_lock() == true);
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lk1.unlock();
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assert(lk1.owns_lock() == false);
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}
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