ceph/src/boost/libs/smart_ptr/test/shared_ptr_fn_test.cpp

   1 //
   2 // shared_ptr_fn_test.cpp
   3 //
   4 // Copyright 2017 Peter Dimov
   5 //
   6 // Distributed under the Boost Software License, Version 1.0.
   7 // See accompanying file LICENSE_1_0.txt or copy at
   8 // http://www.boost.org/LICENSE_1_0.txt
   9 //
  10
  11 #include <boost/shared_ptr.hpp>
  12 #include <boost/weak_ptr.hpp>
  13 #include <boost/core/lightweight_test.hpp>
  14
  15 static void f()
  16 {
  17 }
  18
  19 struct null_deleter
  20 {
  21     template<class Y> void operator()( Y* ) {}
  22 };
  23
  24 int main()
  25 {
  26     boost::shared_ptr<void()> pf( f, null_deleter() );
  27
  28     BOOST_TEST( pf.get() == f );
  29     BOOST_TEST_EQ( pf.use_count(), 1 );
  30     BOOST_TEST( boost::get_deleter<null_deleter>( pf ) != 0 );
  31
  32     boost::weak_ptr<void()> wp( pf );
  33
  34     BOOST_TEST( wp.lock().get() == f );
  35     BOOST_TEST_EQ( wp.use_count(), 1 );
  36
  37     pf.reset();
  38
  39     BOOST_TEST( wp.lock().get() == 0 );
  40     BOOST_TEST_EQ( wp.use_count(), 0 );
  41
  42     return boost::report_errors();
  43 }