ceph/src/boost/libs/signals/test/dead_slot_test.cpp

   1 // Boost.Signals library
   2
   3 // Copyright (C) Douglas Gregor 2001-2006. Use, modification and
   4 // distribution is subject to the Boost Software License, Version
   5 // 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   6 // http://www.boost.org/LICENSE_1_0.txt)
   7
   8 // For more information, see http://www.boost.org
   9
  10 #include <boost/test/minimal.hpp>
  11 #include <boost/signal.hpp>
  12 #include <boost/bind.hpp>
  13
  14 typedef boost::signal1<int, int> sig_type;
  15
  16 class with_constant : public boost::BOOST_SIGNALS_NAMESPACE::trackable {
  17 public:
  18   with_constant(int c) : constant(c) {}
  19
  20   int add(int i) { return i + constant; }
  21
  22 private:
  23   int constant;
  24 };
  25
  26 void do_delayed_connect(with_constant* wc,
  27                         sig_type& sig,
  28                         sig_type::slot_type slot)
  29 {
  30   // Should invalidate the slot, so that we cannot connect to it
  31   delete wc;
  32
  33   boost::BOOST_SIGNALS_NAMESPACE::connection c = sig.connect(slot);
  34   BOOST_CHECK(!c.connected());
  35 }
  36
  37 int test_main(int, char*[])
  38 {
  39   sig_type s1;
  40   with_constant* wc1 = new with_constant(7);
  41
  42   do_delayed_connect(wc1, s1, boost::bind(&with_constant::add, wc1, _1));
  43
  44   return 0;
  45 }