libstdc++-v3/testsuite/ext/mt_allocator/tune-2.cc

   1 // 2004-08-25 Benjamin Kosnik <bkoz@redhat.com>
   2 //
   3 // Copyright (C) 2004-2019 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 3, 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 COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 #include <memory>
  21 #include <ext/mt_allocator.h>
  22 #include <testsuite_hooks.h>
  23 #include <testsuite_character.h>
  24
  25 #ifdef __GTHREADS
  26 #define __cxxthread true
  27 #else
  28 #define __cxxthread false
  29 #endif
  30
  31 // Tune characteristics.
  32 // __per_type_pool_policy
  33 void test02()
  34 {
  35   typedef __gnu_test::pod_int value_type;
  36
  37   using __gnu_cxx::__pool;
  38   using __gnu_cxx::__per_type_pool_policy;
  39
  40   typedef __per_type_pool_policy<value_type, __pool, __cxxthread> policy_type;
  41   typedef __gnu_cxx::__mt_alloc<value_type, policy_type> allocator_type;
  42   typedef __gnu_cxx::__pool_base::_Tune tune_type;
  43
  44   allocator_type a;
  45   tune_type t_default = a._M_get_options();
  46   tune_type t_opt(32, 5120, 32, 5120, 20, 10, false);
  47   tune_type t_small(16, 1024, 32, 2048, 1, 10, false);
  48
  49   tune_type t1 = t_default;
  50   a._M_set_options(t_opt);
  51   tune_type t2 = a._M_get_options();
  52   VERIFY( t1._M_align != t2._M_align );
  53
  54   allocator_type::pointer p1 = a.allocate(128);
  55   allocator_type::pointer p2 = a.allocate(5128);
  56   a._M_set_options(t_small);
  57   tune_type t3 = a._M_get_options();
  58   VERIFY( t3._M_chunk_size != t_small._M_chunk_size );
  59   VERIFY( t3._M_chunk_size == t_opt._M_chunk_size );
  60
  61   a.deallocate(p1, 128);
  62   a.deallocate(p2, 5128);
  63 }
  64
  65 int main()
  66 {
  67   test02();
  68
  69   return 0;
  70 }