libstdc++-v3/testsuite/ext/mt_allocator/22309_thread.cc

   1 // { dg-require-sharedlib "" }
   2 // { dg-options "-g -O2 -pthread -ldl" { target *-*-linux* } }
   3
   4 // Copyright (C) 2004, 2005, 2009 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11 //
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <dlfcn.h>
  22 #include <pthread.h>
  23 #include <cstdlib>
  24 #include <stdexcept>
  25
  26 void
  27 check_dlopen(void*& h)
  28 {
  29   dlerror();
  30   void* tmp = dlopen("./testsuite_shared.so", RTLD_LAZY);
  31   if (!tmp)
  32     {
  33       try
  34         {
  35           // Throws std::logic_error on NULL string.
  36           std::string error(dlerror());
  37           throw std::runtime_error(error);
  38         }
  39       catch (const std::logic_error&)
  40         { }
  41     }
  42   h = tmp;
  43 }
  44
  45 void
  46 check_dlsym(void*& h)
  47 {
  48   dlerror();
  49
  50   typedef void (*function_type) (void);
  51   function_type fn;
  52   fn = reinterpret_cast<function_type>(dlsym(h, "try_allocation"));
  53
  54   try
  55     {
  56       std::string error(dlerror());
  57       throw std::runtime_error(error);
  58     }
  59   catch (const std::logic_error&)
  60     { }
  61
  62   fn();
  63 }
  64
  65 void
  66 check_dlclose(void*& h)
  67 {
  68   dlerror();
  69   if (dlclose(h) != 0)
  70     {
  71       try
  72         {
  73           std::string error(dlerror());
  74           throw std::runtime_error(error);
  75         }
  76       catch (const std::logic_error&)
  77         { }
  78     }
  79 }
  80
  81 void*
  82 tf(void* arg)
  83 {
  84   void* h;
  85   check_dlopen(h);
  86   check_dlsym(h);
  87   check_dlclose(h);
  88   return 0;
  89 }
  90
  91 // libstdc++/22309
  92 int
  93 main (void)
  94 {
  95   pthread_t th;
  96   pthread_create(&th, NULL, tf, NULL);
  97   pthread_join(th, NULL);
  98   return 0;
  99 }