old-autovect-branch/libstdc++-v3/testsuite/ext/mt_allocator/tune-3.cc

   1 // 2004-08-25 Benjamin Kosnik <bkoz@redhat.com>
   2 //
   3 // Copyright (C) 2004, 2005 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  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   allocator_type a;
  53   tune_type t_default = a._M_get_options();
  54   tune_type t_opt(32, 5120, 32, 5120, 20, 10, false);
  55   tune_type t_small(16, 1024, 32, 2048, 1, 10, false);
  56
  57   // First instances assured.
  58   tune_type t1 = t_default;
  59   if (test_policy<policy_type>::per_type())
  60     {
  61       a._M_set_options(t_opt);
  62       t1 = a._M_get_options();
  63       VERIFY( t1._M_align != t_default._M_align );
  64     }
  65
  66   // Lock tune settings.
  67   typename allocator_type::pointer p1 = a.allocate(128);
  68
  69   allocator_type a2;
  70   tune_type t2 = a2._M_get_options();
  71   VERIFY( t2._M_chunk_size == t1._M_chunk_size );
  72
  73   typename allocator_type::pointer p2 = a2.allocate(5128);
  74
  75   a2._M_set_options(t_small);
  76   tune_type t3 = a2._M_get_options();
  77   VERIFY( t3._M_chunk_size != t_small._M_chunk_size );
  78   VERIFY( t3._M_chunk_size == t2._M_chunk_size );
  79
  80   a.deallocate(p1, 128);
  81   a2.deallocate(p2, 5128);
  82 }
  83
  84 int main()
  85 {
  86 #ifdef __GTHREADS
  87   test03<int, __gnu_cxx::__per_type_pool_policy<int, __pool, true> >();
  88   test03<int, __gnu_cxx::__common_pool_policy<__pool, true> >();
  89 #endif
  90
  91   test03<int, __gnu_cxx::__per_type_pool_policy<int, __pool, false> >();
  92   test03<int, __gnu_cxx::__common_pool_policy<__pool, false> >();
  93
  94   return 0;
  95 }