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

   1 // Boost.Signals library
   2
   3 // Copyright Douglas Gregor 2002-2004. 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 <iostream>
  13 #include <vector>
  14 #include <algorithm>
  15 #include <cstdlib>
  16 #include <ctime>
  17
  18 std::vector<int> valuesOutput;
  19 bool ungrouped1 = false;
  20 bool ungrouped2 = false;
  21 bool ungrouped3 = false;
  22
  23 struct emit_int {
  24   emit_int(int v) : value(v) {}
  25
  26   void operator()() const
  27   {
  28     BOOST_CHECK(value == 42 || (!ungrouped1 && !ungrouped2 && !ungrouped3));
  29     valuesOutput.push_back(value);
  30     std::cout << value << ' ';
  31   }
  32
  33 private:
  34   int value;
  35 };
  36
  37 struct write_ungrouped1 {
  38   void operator()() const
  39   {
  40     BOOST_CHECK(!ungrouped1);
  41     ungrouped1 = true;
  42     std::cout << "(Ungrouped #1)" << ' ';
  43   }
  44 };
  45
  46 struct write_ungrouped2 {
  47   void operator()() const
  48   {
  49     BOOST_CHECK(!ungrouped2);
  50     ungrouped2 = true;
  51     std::cout << "(Ungrouped #2)" << ' ';
  52   }
  53 };
  54
  55 struct write_ungrouped3 {
  56   void operator()() const
  57   {
  58     BOOST_CHECK(!ungrouped3);
  59     ungrouped3 = true;
  60     std::cout << "(Ungrouped #3)" << ' ';
  61   }
  62 };
  63
  64 int test_main(int, char* [])
  65 {
  66   using namespace std;
  67   srand(time(0));
  68
  69   std::vector<int> sortedValues;
  70
  71   boost::signal0<void> sig;
  72   sig.connect(write_ungrouped1());
  73   for (int i = 0; i < 100; ++i) {
  74 #ifdef BOOST_NO_STDC_NAMESPACE
  75     int v = rand() % 100;
  76 #else
  77     int v = std::rand() % 100;
  78 #endif
  79     sortedValues.push_back(v);
  80     sig.connect(v, emit_int(v));
  81
  82     if (i == 50) {
  83       sig.connect(write_ungrouped2());
  84     }
  85   }
  86   sig.connect(write_ungrouped3());
  87
  88   std::sort(sortedValues.begin(), sortedValues.end());
  89
  90   // 17 at beginning, 42 at end
  91   sortedValues.insert(sortedValues.begin(), 17);
  92   sig.connect(emit_int(17), boost::BOOST_SIGNALS_NAMESPACE::at_front);
  93   sortedValues.push_back(42);
  94   sig.connect(emit_int(42));
  95
  96   sig();
  97   std::cout << std::endl;
  98
  99   BOOST_CHECK(valuesOutput == sortedValues);
 100   BOOST_CHECK(ungrouped1);
 101   BOOST_CHECK(ungrouped2);
 102   BOOST_CHECK(ungrouped3);
 103   return 0;
 104 }