libstdc++-v3/testsuite/ext/mt_allocator/tune-4.cc

   1 // 2004-08-25 Benjamin Kosnik <bkoz@redhat.com>
   2 //
   3 // Copyright (C) 2004 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 2, or (at your option)
   9 // any later version.
  10 //
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING.  If not, write to the Free
  18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 // USA.
  20
  21 #include <testsuite_hooks.h>
  22 #include <memory>
  23 #include <ext/mt_allocator.h>
  24
  25 // Tune characteristics, two of same type
  26 template<typename _Tp>
  27 struct test_policy
  28 { static bool per_type() { return true; } };
  29
  30 template<bool _Thread>
  31 struct test_policy<__gnu_cxx::__common_pool_policy<_Thread> >
  32 {
  33   typedef __gnu_cxx::__common_pool_policy<_Thread> pool_type;
  34   static bool per_type() { return false; }
  35 };
  36
  37 struct pod2
  38 {
  39   int i;
  40   int j;
  41 };
  42
  43 // Tune characteristics, two of different instantiations
  44 template<typename _Tp, typename _Cp>
  45 void test04()
  46 {
  47   bool test __attribute__((unused)) = true;
  48
  49   typedef __gnu_cxx::__pool_base::_Tune tune_type;
  50   typedef _Tp value_type;
  51   typedef _Cp policy_type;
  52
  53   typedef __gnu_cxx::__mt_alloc<value_type, policy_type> allocator_type;
  54   tune_type t_default;
  55   tune_type t_opt(16, 5120, 32, 5120, 20, 10, false);
  56   tune_type t_single(16, 5120, 32, 5120, 1, 10, false);
  57
  58   allocator_type a;
  59   tune_type t1 = a._M_get_options();
  60   tune_type t2;
  61   if (test_policy<policy_type>::per_type())
  62     {
  63       VERIFY( t1._M_align == t_default._M_align );
  64       a._M_set_options(t_opt);
  65       t2 = a._M_get_options();
  66       VERIFY( t1._M_align != t2._M_align );
  67     }
  68   else
  69     t2 = t1;
  70
  71   // Lock tune settings.
  72   typename allocator_type::pointer p1 = a.allocate(128);
  73
  74   // First instance of local type assured.
  75   typedef pod2 value2_type;
  76   typedef typename allocator_type::template rebind<value2_type>::other rebind_type;
  77
  78   rebind_type a2;
  79   tune_type t3 = a2._M_get_options();
  80   tune_type t4;
  81
  82   // Both policy_type and rebind_type::policy_type have same characteristics.
  83   if (test_policy<policy_type>::per_type())
  84     {
  85       VERIFY( t3._M_align == t_default._M_align );
  86       a2._M_set_options(t_opt);
  87       t4 = a2._M_get_options();
  88       VERIFY( t3._M_align != t4._M_align );
  89       t3 = t4;
  90     }
  91   else
  92     VERIFY( t3._M_max_threads == t2._M_max_threads );
  93
  94   typename rebind_type::pointer p2 = a2.allocate(5128);
  95
  96   a2._M_set_options(t_single);
  97   t4 = a2._M_get_options();
  98   VERIFY( t4._M_max_threads != t_single._M_max_threads );
  99   VERIFY( t4._M_max_threads == t3._M_max_threads );
 100
 101   a.deallocate(p1, 128);
 102   a2.deallocate(p2, 5128);
 103 }
 104
 105 int main()
 106 {
 107 #ifdef __GTHREADS
 108   test04<float, __gnu_cxx::__common_pool_policy<true> >();
 109   test04<double, __gnu_cxx::__per_type_pool_policy<double, true> >();
 110 #endif
 111   test04<float, __gnu_cxx::__common_pool_policy<false> >();
 112   test04<double, __gnu_cxx::__per_type_pool_policy<double, false> >();
 113
 114   return 0;
 115 }