senf/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 /** \file
  24     \brief intrusive_refcount unit tests */
  25
  26 //#include "intrusive_refcount.test.hh"
  27 //#include "intrusive_refcount.test.ih"
  28
  29 // Custom includes
  30 #include "intrusive_refcount.hh"
  31 #include <boost/intrusive_ptr.hpp>
  32
  33 #include <senf/Utils/auto_unit_test.hh>
  34 #include <boost/test/test_tools.hpp>
  35
  36 #define prefix_
  37 ///////////////////////////////cc.p////////////////////////////////////////
  38
  39 namespace {
  40     struct Tester
  41         : public senf::intrusive_refcount
  42     {
  43         typedef boost::intrusive_ptr<Tester> ptr;
  44
  45         Tester() { ++counter; }
  46         ~Tester() { --counter; }
  47
  48         static unsigned counter;
  49     };
  50
  51     unsigned Tester::counter = 0;
  52
  53     struct TesterCustom
  54         : public senf::intrusive_refcount_t<TesterCustom>
  55     {
  56         typedef boost::intrusive_ptr<TesterCustom> ptr;
  57         typedef senf::intrusive_refcount_t<TesterCustom> super;
  58
  59         TesterCustom() { ++counter; }
  60         ~TesterCustom() { --counter; }
  61
  62         void add_ref() { super::add_ref(); ++refs; }
  63         bool release() { --refs; super::release(); return false; }
  64
  65         static unsigned counter;
  66         static unsigned refs;
  67     };
  68
  69     unsigned TesterCustom::counter = 0;
  70     unsigned TesterCustom::refs = 0;
  71 }
  72
  73 SENF_AUTO_UNIT_TEST(intrusive_refcount)
  74 {
  75     BOOST_CHECK_EQUAL(Tester::counter,0u);
  76
  77     Tester::ptr p (new Tester);
  78     BOOST_CHECK_EQUAL(Tester::counter,1u);
  79     BOOST_CHECK_EQUAL(p->refcount(),1u);
  80     BOOST_CHECK_EQUAL(p->is_shared(),false);
  81
  82     {
  83         Tester::ptr pp (p);
  84         BOOST_CHECK_EQUAL(Tester::counter,1u);
  85         BOOST_CHECK_EQUAL(p->refcount(),2u);
  86         BOOST_CHECK_EQUAL(p->is_shared(),true);
  87     }
  88
  89     BOOST_CHECK_EQUAL(Tester::counter,1u);
  90     BOOST_CHECK_EQUAL(p->refcount(),1u);
  91     BOOST_CHECK_EQUAL(p->is_shared(),false);
  92
  93     p = 0;
  94     BOOST_CHECK_EQUAL(Tester::counter,0u);
  95 }
  96
  97 SENF_AUTO_UNIT_TEST(intrusive_refcount_t)
  98 {
  99     BOOST_CHECK_EQUAL(TesterCustom::counter,0u);
 100     BOOST_CHECK_EQUAL(TesterCustom::refs,0u);
 101
 102     TesterCustom::ptr p (new TesterCustom);
 103     BOOST_CHECK_EQUAL(TesterCustom::counter,1u);
 104     BOOST_CHECK_EQUAL(p->refcount(),1u);
 105     BOOST_CHECK_EQUAL(p->is_shared(),false);
 106     BOOST_CHECK_EQUAL(TesterCustom::refs,1u);
 107
 108
 109     {
 110         TesterCustom::ptr pp (p);
 111         BOOST_CHECK_EQUAL(TesterCustom::counter,1u);
 112         BOOST_CHECK_EQUAL(p->refcount(),2u);
 113         BOOST_CHECK_EQUAL(p->is_shared(),true);
 114         BOOST_CHECK_EQUAL(TesterCustom::refs,2u);
 115     }
 116
 117     BOOST_CHECK_EQUAL(TesterCustom::counter,1u);
 118     BOOST_CHECK_EQUAL(p->refcount(),1u);
 119     BOOST_CHECK_EQUAL(p->is_shared(),false);
 120     BOOST_CHECK_EQUAL(TesterCustom::refs,1u);
 121
 122     {
 123         TesterCustom * pp (p.get());
 124         p = 0;
 125         BOOST_CHECK_EQUAL(TesterCustom::counter,1u);
 126         BOOST_CHECK_EQUAL(TesterCustom::refs,0u);
 127         // The TesterCustom leaks ...
 128         delete pp;
 129         BOOST_CHECK_EQUAL(TesterCustom::counter,0u);
 130     }
 131 }
 132
 133 ///////////////////////////////cc.e////////////////////////////////////////
 134 #undef prefix_
 135
 136 \f
 137 // Local Variables:
 138 // mode: c++
 139 // fill-column: 100
 140 // c-file-style: "senf"
 141 // indent-tabs-mode: nil
 142 // ispell-local-dictionary: "american"
 143 // compile-command: "scons -u test"
 144 // comment-column: 40
 145 // End: