ceph/src/boost/libs/interprocess/test/enable_shared_from_this_test.cpp

   1 //////////////////////////////////////////////////////////////////////////////
   2 //  Copyright (c) 2002, 2003 Peter Dimov
   3 //
   4 // This file is the adaptation of shared_from_this_test.cpp from smart_ptr library
   5 //
   6 // (C) Copyright Ion Gaztanaga 2005-2012. Distributed under the Boost
   7 // Software License, Version 1.0. (See accompanying file
   8 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   9 //
  10 // See http://www.boost.org/libs/interprocess for documentation.
  11 //
  12 //////////////////////////////////////////////////////////////////////////////
  13 #include <boost/interprocess/detail/workaround.hpp>
  14 #include <boost/interprocess/smart_ptr/enable_shared_from_this.hpp>
  15 #include <boost/interprocess/smart_ptr/shared_ptr.hpp>
  16
  17 #include <boost/core/lightweight_test.hpp>
  18 #include <boost/interprocess/managed_shared_memory.hpp>
  19 #include "get_process_id_name.hpp"
  20
  21 //
  22
  23 using namespace boost::interprocess;
  24
  25 typedef allocator<void, managed_shared_memory::segment_manager>
  26    v_allocator_t;
  27
  28 struct X;
  29
  30 typedef deleter<X, managed_shared_memory::segment_manager>  x_deleter_t;
  31
  32 struct X :
  33    public enable_shared_from_this<X, v_allocator_t, x_deleter_t>
  34 {
  35 };
  36
  37 typedef shared_ptr<X, v_allocator_t, x_deleter_t>           v_shared_ptr;
  38
  39
  40 template<class ManagedMemory>
  41 void test_enable_shared_this(ManagedMemory &managed_mem)
  42 {
  43    v_shared_ptr p(make_managed_shared_ptr
  44       (managed_mem.template construct<X>(anonymous_instance)(), managed_mem));
  45
  46    v_shared_ptr q = p->shared_from_this();
  47    BOOST_TEST(p == q);
  48    BOOST_TEST(!(p < q) && !(q < p));
  49
  50    X v2(*p);
  51
  52    try
  53    {
  54       //This should throw bad_weak_ptr
  55       v_shared_ptr r = v2.shared_from_this();
  56       BOOST_ERROR("v2.shared_from_this() failed to throw");
  57    }
  58    catch(boost::interprocess::bad_weak_ptr const &)
  59    {
  60       //This is the expected path
  61    }
  62    catch(...){
  63       BOOST_ERROR("v2.shared_from_this() threw an unexpected exception");
  64    }
  65
  66    try
  67    {
  68       //This should not throw bad_weak_ptr
  69       *p = X();
  70       v_shared_ptr r = p->shared_from_this();
  71       BOOST_TEST(p == r);
  72       BOOST_TEST(!(p < r) && !(r < p));
  73    }
  74    catch(boost::interprocess::bad_weak_ptr const &)
  75    {
  76       BOOST_ERROR("p->shared_from_this() threw bad_weak_ptr after *p = X()");
  77    }
  78    catch(...)
  79    {
  80       BOOST_ERROR("p->shared_from_this() threw an unexpected exception after *p = X()");
  81    }
  82 }
  83
  84
  85 int main()
  86 {
  87    std::string process_name;
  88    test::get_process_id_name(process_name);
  89    shared_memory_object::remove(process_name.c_str());
  90    managed_shared_memory shmem(create_only, process_name.c_str(), 65536);
  91    test_enable_shared_this(shmem);
  92    shared_memory_object::remove(process_name.c_str());
  93    return boost::report_errors();
  94 }