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Viewing changes to libcxx/test/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_compare_exchange_strong_explicit.pass.cpp

  • Committer: Package Import Robot
  • Author(s): Sylvestre Ledru, Andrej Belym
  • Date: 2012-08-01 10:38:08 UTC
  • mfrom: (1.1.1)
  • Revision ID: package-import@ubuntu.com-20120801103808-n4qy15hxyhj3vxgi
Tags: 1.0~svn161106-1~exp1
* New snapshot release

[ Andrej Belym ]
* Multiarch support.

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libcxx/test/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_compare_exchange_strong_explicit.pass.cpp
 
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//===----------------------------------------------------------------------===//
 
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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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// <memory>
 
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// shared_ptr
 
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// template <class T>
 
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// bool
 
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// atomic_compare_exchange_strong_explicit(shared_ptr<T>* p, shared_ptr<T>* v,
 
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//                                         shared_ptr<T> w, memory_order success,
 
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//                                         memory_order failure);
 
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#include <memory>
 
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#include <cassert>
 
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int main()
 
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{
 
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#if __has_feature(cxx_atomic)
 
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    {
 
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        std::shared_ptr<int> p(new int(4));
 
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        std::shared_ptr<int> v(new int(3));
 
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        std::shared_ptr<int> w(new int(2));
 
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        bool b = std::atomic_compare_exchange_strong_explicit(&p, &v, w,
 
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                                                              std::memory_order_seq_cst,
 
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                                                              std::memory_order_seq_cst);
 
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        assert(b == false);
 
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        assert(*p == 4);
 
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        assert(*v == 4);
 
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        assert(*w == 2);
 
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    }
 
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    {
 
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        std::shared_ptr<int> p(new int(4));
 
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        std::shared_ptr<int> v = p;
 
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        std::shared_ptr<int> w(new int(2));
 
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        bool b = std::atomic_compare_exchange_strong_explicit(&p, &v, w,
 
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                                                              std::memory_order_seq_cst,
 
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                                                              std::memory_order_seq_cst);
 
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        assert(b == true);
 
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        assert(*p == 2);
 
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        assert(*v == 4);
 
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        assert(*w == 2);
 
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    }
 
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#endif
 
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}