libstdc++-v3/testsuite/30_threads/async/except.cc

   1 // { dg-do run { target *-*-freebsd* *-*-dragonfly* *-*-netbsd* *-*-linux* *-*-gnu* *-*-solaris* *-*-cygwin *-*-rtems* *-*-darwin* powerpc-ibm-aix* } }
   2 // { dg-options "-pthread" { target *-*-freebsd* *-*-dragonfly* *-*-netbsd* *-*-linux* *-*-gnu* *-*-solaris* powerpc-ibm-aix* } }
   3 // { dg-require-effective-target c++11 }
   4 // { dg-require-cstdint "" }
   5 // { dg-require-gthreads "" }
   6 // { dg-require-atomic-builtins "" }
   7
   8 // Copyright (C) 2010-2017 Free Software Foundation, Inc.
   9 //
  10 // This file is part of the GNU ISO C++ Library.  This library is free
  11 // software; you can redistribute it and/or modify it under the
  12 // terms of the GNU General Public License as published by the
  13 // Free Software Foundation; either version 3, or (at your option)
  14 // any later version.
  15
  16 // This library is distributed in the hope that it will be useful,
  17 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 // GNU General Public License for more details.
  20
  21 // You should have received a copy of the GNU General Public License along
  22 // with this library; see the file COPYING3.  If not see
  23 // <http://www.gnu.org/licenses/>.
  24
  25
  26 #include <future>
  27 #include <testsuite_hooks.h>
  28
  29 struct Chucky
  30 {
  31   Chucky() : copied(false) { }
  32
  33   Chucky(const Chucky& other) : copied(true)
  34   {
  35     if (other.copied)
  36       return;
  37     other.copied = true;
  38     using namespace std;
  39     // Throw on first DECAY_COPY to simulate inability to start a new thread.
  40     throw system_error(make_error_code(errc::resource_unavailable_try_again));
  41   }
  42
  43   void operator()() const { }
  44
  45   mutable bool copied;
  46 };
  47
  48 void test01()
  49 {
  50   using namespace std;
  51
  52   future<void> f = async(Chucky{});
  53   VERIFY( f.wait_for(chrono::seconds(100)) == future_status::deferred );
  54
  55   bool caught = false;
  56   try {
  57     f = async(launch::async, Chucky{});
  58   } catch (const system_error&) {
  59     caught = true;
  60   }
  61   VERIFY( caught );
  62 }
  63
  64 int main()
  65 {
  66   test01();
  67 }