Utils/intrusive_refcount.test.cc

   1 // $Id$
   2 //
   3 // Copyright (C) 2006
   4 // Fraunhofer Institute for Open Communication Systems (FOKUS)
   5 // Competence Center NETwork research (NET), St. Augustin, GERMANY
   6 //     Stefan Bund <g0dil@berlios.de>
   7 //
   8 // This program is free software; you can redistribute it and/or modify
   9 // it under the terms of the GNU General Public License as published by
  10 // the Free Software Foundation; either version 2 of the License, or
  11 // (at your option) any later version.
  12 //
  13 // This program is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU General Public License
  19 // along with this program; if not, write to the
  20 // Free Software Foundation, Inc.,
  21 // 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  22
  23 // Unit tests
  24
  25 //#include "intrusive_refcount.test.hh"
  26 //#include "intrusive_refcount.test.ih"
  27
  28 // Custom includes
  29 #include "intrusive_refcount.hh"
  30 #include <boost/intrusive_ptr.hpp>
  31
  32 #include "../Utils/auto_unit_test.hh"
  33 #include <boost/test/test_tools.hpp>
  34
  35 #define prefix_
  36 ///////////////////////////////cc.p////////////////////////////////////////
  37
  38 namespace {
  39     struct Tester
  40         : public senf::intrusive_refcount
  41     {
  42         typedef boost::intrusive_ptr<Tester> ptr;
  43
  44         Tester() { ++counter; }
  45         ~Tester() { --counter; }
  46
  47         static unsigned counter;
  48     };
  49
  50     unsigned Tester::counter = 0;
  51
  52     struct TesterCustom
  53         : public senf::intrusive_refcount_t<TesterCustom>
  54     {
  55         typedef boost::intrusive_ptr<TesterCustom> ptr;
  56         typedef senf::intrusive_refcount_t<TesterCustom> super;
  57
  58         TesterCustom() { ++counter; }
  59         ~TesterCustom() { --counter; }
  60
  61         void add_ref() { super::add_ref(); ++refs; }
  62         bool release() { --refs; super::release(); return false; }
  63
  64         static unsigned counter;
  65         static unsigned refs;
  66     };
  67
  68     unsigned TesterCustom::counter = 0;
  69     unsigned TesterCustom::refs = 0;
  70 }
  71
  72 BOOST_AUTO_UNIT_TEST(intrusive_refcount)
  73 {
  74     BOOST_CHECK_EQUAL(Tester::counter,0u);
  75
  76     Tester::ptr p (new Tester);
  77     BOOST_CHECK_EQUAL(Tester::counter,1u);
  78     BOOST_CHECK_EQUAL(p->refcount(),1u);
  79     BOOST_CHECK_EQUAL(p->is_shared(),false);
  80
  81     {
  82         Tester::ptr pp (p);
  83         BOOST_CHECK_EQUAL(Tester::counter,1u);
  84         BOOST_CHECK_EQUAL(p->refcount(),2u);
  85         BOOST_CHECK_EQUAL(p->is_shared(),true);
  86     }
  87
  88     BOOST_CHECK_EQUAL(Tester::counter,1u);
  89     BOOST_CHECK_EQUAL(p->refcount(),1u);
  90     BOOST_CHECK_EQUAL(p->is_shared(),false);
  91
  92     p = 0;
  93     BOOST_CHECK_EQUAL(Tester::counter,0u);
  94 }
  95
  96 BOOST_AUTO_UNIT_TEST(intrusive_refcount_t)
  97 {
  98     BOOST_CHECK_EQUAL(TesterCustom::counter,0u);
  99     BOOST_CHECK_EQUAL(TesterCustom::refs,0u);
 100
 101     TesterCustom::ptr p (new TesterCustom);
 102     BOOST_CHECK_EQUAL(TesterCustom::counter,1u);
 103     BOOST_CHECK_EQUAL(p->refcount(),1u);
 104     BOOST_CHECK_EQUAL(p->is_shared(),false);
 105     BOOST_CHECK_EQUAL(TesterCustom::refs,1u);
 106
 107
 108     {
 109         TesterCustom::ptr pp (p);
 110         BOOST_CHECK_EQUAL(TesterCustom::counter,1u);
 111         BOOST_CHECK_EQUAL(p->refcount(),2u);
 112         BOOST_CHECK_EQUAL(p->is_shared(),true);
 113         BOOST_CHECK_EQUAL(TesterCustom::refs,2u);
 114     }
 115
 116     BOOST_CHECK_EQUAL(TesterCustom::counter,1u);
 117     BOOST_CHECK_EQUAL(p->refcount(),1u);
 118     BOOST_CHECK_EQUAL(p->is_shared(),false);
 119     BOOST_CHECK_EQUAL(TesterCustom::refs,1u);
 120
 121     {
 122         TesterCustom * pp (p.get());
 123         p = 0;
 124         BOOST_CHECK_EQUAL(TesterCustom::counter,1u);
 125         BOOST_CHECK_EQUAL(TesterCustom::refs,0u);
 126         // The TesterCustom leaks ...
 127         delete pp;
 128         BOOST_CHECK_EQUAL(TesterCustom::counter,0u);
 129     }
 130 }
 131
 132 ///////////////////////////////cc.e////////////////////////////////////////
 133 #undef prefix_
 134
 135 \f
 136 // Local Variables:
 137 // mode: c++
 138 // fill-column: 100
 139 // c-file-style: "senf"
 140 // indent-tabs-mode: nil
 141 // ispell-local-dictionary: "american"
 142 // compile-command: "scons -u test"
 143 // comment-column: 40
 144 // End: