libstdc++-v3/testsuite/ext/mt_allocator/tune-3.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 using __gnu_cxx::__pool;
  31 using __gnu_cxx::__common_pool_policy;
  32
  33 template<>
  34 struct test_policy<__common_pool_policy<__pool, true> >
  35 { static bool per_type() { return false; } };
  36
  37 template<>
  38 struct test_policy<__common_pool_policy<__pool, false> >
  39 { static bool per_type() { return false; } };
  40
  41 // Tune characteristics, two of different types
  42 template<typename _Tp, typename _Cp>
  43 void test03()
  44 {
  45   bool test __attribute__((unused)) = true;
  46
  47   typedef __gnu_cxx::__pool_base::_Tune tune_type;
  48   typedef _Tp value_type;
  49   typedef _Cp policy_type;
  50   typedef __gnu_cxx::__mt_alloc<value_type, policy_type> allocator_type;
  51
  52   tune_type t_opt(16, 5120, 32, 5120, 20, 10, false);
  53   tune_type t_single(16, 5120, 32, 5120, 1, 10, false);
  54
  55   // First instances assured.
  56   allocator_type a;
  57   tune_type t_default = a._M_get_options();
  58   tune_type t1 = t_default;
  59   tune_type t2;
  60   if (test_policy<policy_type>::per_type())
  61     {
  62       VERIFY( t1._M_align == t_default._M_align );
  63       a._M_set_options(t_opt);
  64       t2 = a._M_get_options();
  65       VERIFY( t1._M_align != t2._M_align );
  66     }
  67   else
  68     t2 = t1;
  69
  70   // Lock tune settings.
  71   typename allocator_type::pointer p1 = a.allocate(128);
  72
  73   allocator_type a2;
  74   tune_type t3 = a2._M_get_options();
  75   tune_type t4;
  76   VERIFY( t3._M_max_threads == t2._M_max_threads );
  77
  78   typename allocator_type::pointer p2 = a2.allocate(5128);
  79
  80   a2._M_set_options(t_single);
  81   t4 = a2._M_get_options();
  82   VERIFY( t4._M_max_threads != t_single._M_max_threads );
  83   VERIFY( t4._M_max_threads == t3._M_max_threads );
  84
  85   a.deallocate(p1, 128);
  86   a2.deallocate(p2, 5128);
  87 }
  88
  89 int main()
  90 {
  91 #ifdef __GTHREADS
  92   test03<int, __gnu_cxx::__per_type_pool_policy<int, __pool, true> >();
  93   test03<int, __gnu_cxx::__common_pool_policy<__pool, true> >();
  94 #endif
  95
  96   test03<int, __gnu_cxx::__per_type_pool_policy<int, __pool, false> >();
  97   test03<int, __gnu_cxx::__common_pool_policy<__pool, false> >();
  98
  99   return 0;
 100 }