samples/console/console.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        samples/console/console.cpp
   3 // Purpose:     a sample console (as opposed to GUI) progam using wxWindows
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     04.10.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1999 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #include <stdio.h>
  21
  22 #include <wx/string.h>
  23 #include <wx/file.h>
  24 #include <wx/app.h>
  25
  26 // ----------------------------------------------------------------------------
  27 // conditional compilation
  28 // ----------------------------------------------------------------------------
  29
  30 // what to test?
  31
  32 //#define TEST_ARRAYS
  33 #define TEST_LOG
  34 //#define TEST_THREADS
  35
  36 // ============================================================================
  37 // implementation
  38 // ============================================================================
  39
  40 // ----------------------------------------------------------------------------
  41 // threads
  42 // ----------------------------------------------------------------------------
  43
  44 #ifdef TEST_THREADS
  45
  46 #include <wx/thread.h>
  47
  48 static size_t gs_counter = (size_t)-1;
  49 static wxCriticalSection gs_critsect;
  50
  51 class MyThread : public wxThread
  52 {
  53 public:
  54     MyThread(char ch);
  55
  56     // thread execution starts here
  57     virtual void *Entry();
  58
  59     // and stops here
  60     virtual void OnExit();
  61
  62 public:
  63     char m_ch;
  64 };
  65
  66 MyThread::MyThread(char ch)
  67 {
  68     m_ch = ch;
  69
  70     Create();
  71 }
  72
  73 void *MyThread::Entry()
  74 {
  75     {
  76         wxCriticalSectionLocker lock(gs_critsect);
  77         if ( gs_counter == (size_t)-1 )
  78             gs_counter = 1;
  79         else
  80             gs_counter++;
  81     }
  82
  83     for ( size_t n = 0; n < 10; n++ )
  84     {
  85         if ( TestDestroy() )
  86             break;
  87
  88         putchar(m_ch);
  89         fflush(stdout);
  90
  91         wxThread::Sleep(100);
  92     }
  93
  94     return NULL;
  95 }
  96
  97 void MyThread::OnExit()
  98 {
  99     wxCriticalSectionLocker lock(gs_critsect);
 100     gs_counter--;
 101 }
 102
 103 #endif // TEST_THREADS
 104
 105 // ----------------------------------------------------------------------------
 106 // arrays
 107 // ----------------------------------------------------------------------------
 108
 109 #ifdef TEST_ARRAYS
 110
 111 void PrintArray(const char* name, const wxArrayString& array)
 112 {
 113     printf("Dump of the array '%s'\n", name);
 114
 115     size_t nCount = array.GetCount();
 116     for ( size_t n = 0; n < nCount; n++ )
 117     {
 118         printf("\t%s[%u] = '%s'\n", name, n, array[n].c_str());
 119     }
 120 }
 121
 122 #endif // TEST_ARRAYS
 123
 124 // ----------------------------------------------------------------------------
 125 // entry point
 126 // ----------------------------------------------------------------------------
 127
 128 int main(int argc, char **argv)
 129 {
 130     if ( !wxInitialize() )
 131     {
 132         fprintf(stderr, "Failed to initialize the wxWindows library, aborting.");
 133     }
 134
 135 #ifdef TEST_ARRAYS
 136     wxArrayString a1;
 137     a1.Add("tiger");
 138     a1.Add("cat");
 139     a1.Add("lion");
 140     a1.Add("dog");
 141     a1.Add("human");
 142     a1.Add("ape");
 143
 144     puts("*** Initially:");
 145
 146     PrintArray("a1", a1);
 147
 148     wxArrayString a2(a1);
 149     PrintArray("a2", a2);
 150
 151     wxSortedArrayString a3(a1);
 152     PrintArray("a3", a3);
 153
 154     puts("*** After deleting a string from a1");
 155     a1.Remove(2);
 156
 157     PrintArray("a1", a1);
 158     PrintArray("a2", a2);
 159     PrintArray("a3", a3);
 160
 161     puts("*** After reassigning a1 to a2 and a3");
 162     a3 = a2 = a1;
 163     PrintArray("a2", a2);
 164     PrintArray("a3", a3);
 165 #endif // TEST_ARRAYS
 166
 167 #ifdef TEST_LOG
 168     wxString s;
 169     for ( size_t n = 0; n < 8000; n++ )
 170     {
 171         s << (char)('A' + (n % 26));
 172     }
 173
 174     wxString msg;
 175     msg.Printf("A very very long message: '%s', the end!\n", s.c_str());
 176
 177     // this one shouldn't be truncated
 178     printf(msg);
 179
 180     // but this one will because log functions use fixed size buffer
 181     wxLogMessage("A very very long message 2: '%s', the end!\n", s.c_str());
 182 #endif // TEST_LOG
 183
 184 #ifdef TEST_THREADS
 185     static const size_t nThreads = 3;
 186     MyThread *threads[nThreads];
 187     size_t n;
 188     for ( n = 0; n < nThreads; n++ )
 189     {
 190         threads[n] = new MyThread('+' + n);
 191         threads[n]->Run();
 192     }
 193
 194     // wait until all threads terminate
 195     for ( ;; )
 196     {
 197         wxCriticalSectionLocker lock(gs_critsect);
 198         if ( !gs_counter )
 199             break;
 200     }
 201
 202     puts("\nThat's all, folks!");
 203
 204     for ( n = 0; n < nThreads; n++ )
 205     {
 206         threads[n]->Delete();
 207     }
 208 #endif // TEST_THREADS
 209
 210     wxUninitialize();
 211
 212     return 0;
 213 }