File: test_delete_pointer.cpp

package info (click to toggle)
boost1.42 1.42.0-4
  • links: PTS, VCS
  • area: main
  • in suites: squeeze
  • size: 277,864 kB
  • ctags: 401,076
  • sloc: cpp: 1,235,659; xml: 74,142; ansic: 41,313; python: 26,756; sh: 11,840; cs: 2,118; makefile: 655; perl: 494; yacc: 456; asm: 353; csh: 6
file content (129 lines) | stat: -rw-r--r-- 3,101 bytes parent folder | download | duplicates (3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
// test_delete_pointer.cpp

// (C) Copyright 2002 Vahan Margaryan. 
// Use, modification and distribution is subject to the Boost Software
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//

#include <cstddef> // NULL
#include <fstream>

#include <cstdio> // remove
#include <boost/config.hpp>
#if defined(BOOST_NO_STDC_NAMESPACE)
namespace std{ 
    using ::remove;
}
#endif

#include "test_tools.hpp"
#include <boost/detail/no_exceptions_support.hpp>
#include <boost/serialization/throw_exception.hpp>

#include <boost/serialization/nvp.hpp>
#include <boost/serialization/split_member.hpp>
#include <boost/serialization/vector.hpp>

//A holds a pointer to another A, but doesn't own the pointer.
//objCount
class A
{
    friend class boost::serialization::access;
    template<class Archive>
    void save(Archive &ar, const unsigned int /* file_version */) const
    {
        ar << BOOST_SERIALIZATION_NVP(next_);
    }
    template<class Archive>
    void load(Archive & ar, const unsigned int /* file_version */)
    {
        static int i = 0;
        ar >> BOOST_SERIALIZATION_NVP(next_);
        if(++i == 3)
            boost::serialization::throw_exception(boost::archive::archive_exception(
                boost::archive::archive_exception::no_exception
            ));
    }
    BOOST_SERIALIZATION_SPLIT_MEMBER()
public:
    A()
    {
        next_ = 0;
        ++objcount;
    }
    A(const A& a)
    {
        next_ = a.next_; ++objcount;
    }
    ~A()
    {
        --objcount;
    }
    A* next_;
    static int objcount;
};


int A::objcount = 0;

int
test_main( int /* argc */, char* /* argv */[] )
{
    std::vector<A*> vec;
    A* a = new A;
    a->next_ = 0;
    vec.push_back(a);

    //fill the vector with chained A's. The vector is assumed
    //to own the objects - we will destroy the objects through this vector.
    unsigned int i;
    for(i   = 1; i < 10; ++i)
    {
        a = new A;
        vec[i - 1]->next_ = a;
        a->next_ = 0;
        vec.push_back(a);
    }

    const char * testfile = boost::archive::tmpnam(0);
    BOOST_REQUIRE(NULL != testfile);

    //output the vector
    {
        test_ostream os(testfile, TEST_STREAM_FLAGS);
        test_oarchive oa(os, TEST_ARCHIVE_FLAGS);
        oa << BOOST_SERIALIZATION_NVP(vec);
    }

    //erase the objects
    for(i = 0; i < vec.size(); ++i)
        delete vec[i];
    vec.clear();

    //read the vector back
    {
        test_istream is(testfile, TEST_STREAM_FLAGS);
        test_iarchive ia(is, TEST_ARCHIVE_FLAGS);
        BOOST_TRY {
            ia >> BOOST_SERIALIZATION_NVP(vec);
        }
        BOOST_CATCH (...){
            ia.delete_created_pointers();
            vec.clear();
        }
        BOOST_CATCH_END
    }

    //delete the objects
    for(i = 0; i < vec.size(); ++i)
        delete vec[i];
    vec.clear();

    //identify the leaks
    BOOST_CHECK(A::objcount == 0);
    std::remove(testfile);
    return EXIT_SUCCESS;
}