ACE/examples/APG/Containers/Map_Manager.cpp

   1 #include "ace/Log_Msg.h"
   2 #include "ace/Map_Manager.h"
   3 #include "ace/Synch.h"
   4 #include "DataElement.h"
   5 #include "KeyType.h"
   6
   7 class Map_Example
   8 {
   9 public:
  10   // Illustrate the ACE_Map_Manager.
  11   int run ();
  12
  13 private:
  14   // Iterate in the forward direction.
  15   void iterate_forward ();
  16
  17   // Iterate in the other direction.
  18   void iterate_reverse ();
  19
  20   // Remove all elements from the map.
  21   void remove_all ();
  22
  23 private:
  24   ACE_Map_Manager<KeyType,DataElement,ACE_Null_Mutex> map_;
  25 };
  26
  27 // Listing 2 code/ch05
  28 int Map_Example::run ()
  29 {
  30   ACE_TRACE ("Map_Example::run");
  31
  32   // Corresponding KeyType objects are created on the fly.
  33   for (int i = 0; i < 100; i++)
  34     {
  35       map_.bind (i, DataElement (i));
  36     }
  37
  38   ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Map has\n")));
  39   for (int j = 0; j < 100; j++)
  40     {
  41       DataElement d;
  42       map_.find (j,d);
  43       ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("%d:"), d.getData ()));
  44     }
  45   ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("\n")));
  46
  47   // Iterate in the forward direction.
  48   this->iterate_forward ();
  49
  50   // Iterate in the other direction.
  51   this->iterate_reverse ();
  52
  53   // Remove all elements from the map.
  54   this->remove_all ();
  55
  56   // Iterate in the forward direction.
  57   this->iterate_forward ();
  58
  59   return 0;
  60 }
  61 // Listing 2
  62 // Listing 3 code/ch05
  63 void Map_Example::iterate_forward ()
  64 {
  65   ACE_TRACE ("Map_Example::iterate_forward");
  66
  67   ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Forward iteration\n")));
  68   for (ACE_Map_Manager<KeyType,
  69                        DataElement,
  70                        ACE_Null_Mutex>::iterator
  71        iter = map_.begin ();
  72        iter != map_.end ();
  73        iter++)
  74     {
  75       ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("%d:"),
  76                   (*iter).int_id_.getData ()));
  77     }
  78   ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("\n")));
  79 }
  80
  81
  82 void Map_Example::iterate_reverse ()
  83 {
  84   ACE_TRACE ("Map_Example::iterate_reverse");
  85   ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Reverse iteration\n")));
  86   for (ACE_Map_Manager<KeyType,
  87                        DataElement,
  88                        ACE_Null_Mutex>::reverse_iterator
  89        iter = map_.rbegin ();
  90        iter != map_.end ();
  91        iter++)
  92     {
  93       ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("%d:"),
  94                   (*iter).int_id_.getData ()));
  95     }
  96   ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("\n")));
  97 }
  98 // Listing 3
  99 // Listing 4 code/ch05
 100 void Map_Example::remove_all ()
 101 {
 102   ACE_TRACE ("Map_Example::remove_all");
 103
 104   // Note that we can't use the iterators here as they
 105   // are invalidated after deletions or insertions.
 106   map_.unbind_all ();
 107 }
 108 // Listing 4
 109
 110 int ACE_TMAIN (int, ACE_TCHAR *[])
 111 {
 112   Map_Example me;
 113   return  me.run ();
 114 }
 115