libstdc++-v3/testsuite/ext/mt_allocator/tune-2.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 <cassert>
  22 #include <memory>
  23 #include <ext/mt_allocator.h>
  24
  25 struct pod
  26 {
  27   int i;
  28 };
  29
  30 // Tune characteristics.
  31 // __per_type_pool_policy
  32 void test02()
  33 {
  34   typedef pod value_type;
  35 #ifdef __GTHREADS
  36   typedef __gnu_cxx::__per_type_pool_policy<value_type, true> policy_type;
  37 #else
  38   typedef __gnu_cxx::__per_type_pool_policy<value_type, false> policy_type;
  39 #endif
  40   typedef __gnu_cxx::__mt_alloc<value_type, policy_type> allocator_type;
  41   typedef __gnu_cxx::__pool_base::_Tune tune_type;
  42
  43   tune_type t_default;
  44   tune_type t_opt(16, 5120, 32, 5120, 20, 10, false);
  45   tune_type t_single(16, 5120, 32, 5120, 1, 10, false);
  46
  47   allocator_type a;
  48   tune_type t1 = a._M_get_options();
  49   assert(t1._M_align == t_default._M_align);
  50   a._M_set_options(t_opt);
  51   tune_type t2 = a._M_get_options();
  52   assert(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_single);
  57   t1 = a._M_get_options();
  58   assert(t1._M_max_threads != t_single._M_max_threads);
  59   assert(t1._M_max_threads == t_opt._M_max_threads);
  60
  61   a.deallocate(p1, 128);
  62   a.deallocate(p2, 5128);
  63 }
  64
  65
  66 int main()
  67 {
  68   test02();
  69
  70   return 0;
  71 }