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_STRINGS
  35 //#define TEST_THREADS
  36 #define TEST_TIME
  37 //#define TEST_LONGLONG
  38
  39 // ============================================================================
  40 // implementation
  41 // ============================================================================
  42
  43 // ----------------------------------------------------------------------------
  44 // long long
  45 // ----------------------------------------------------------------------------
  46
  47 #ifdef TEST_LONGLONG
  48
  49 #include <wx/longlong.h>
  50 #include <wx/timer.h>
  51
  52 static void TestSpeed()
  53 {
  54     static const long max = 100000000;
  55     long n;
  56
  57     {
  58         wxStopWatch sw;
  59
  60         long l = 0;
  61         for ( n = 0; n < max; n++ )
  62         {
  63             l += n;
  64         }
  65
  66         printf("Summing longs took %ld milliseconds.\n", sw.Time());
  67     }
  68
  69     {
  70         wxStopWatch sw;
  71
  72         __int64 l = 0;
  73         for ( n = 0; n < max; n++ )
  74         {
  75             l += n;
  76         }
  77
  78         printf("Summing __int64s took %ld milliseconds.\n", sw.Time());
  79     }
  80
  81     {
  82         wxStopWatch sw;
  83
  84         wxLongLong l;
  85         for ( n = 0; n < max; n++ )
  86         {
  87             l += n;
  88         }
  89
  90         printf("Summing wxLongLongs took %ld milliseconds.\n", sw.Time());
  91     }
  92 }
  93
  94 static void TestDivision()
  95 {
  96     #define MAKE_LL(x1, x2, x3, x4) wxLongLong((x1 << 16) | x2, (x3 << 16) | x3)
  97
  98     // seed pseudo random generator
  99     //srand((unsigned)time(NULL));
 100
 101     size_t nTested = 0;
 102     for ( size_t n = 0; n < 10000; n++ )
 103     {
 104         // get a random wxLongLong (shifting by 12 the MSB ensures that the
 105         // multiplication will not overflow)
 106         wxLongLong ll = MAKE_LL((rand() >> 12), rand(), rand(), rand());
 107
 108         wxASSERT( (ll * 1000l)/1000l == ll );
 109
 110         nTested++;
 111     }
 112
 113     printf("\n*** Tested %u divisions/multiplications: ok\n", nTested);
 114
 115     #undef MAKE_LL
 116 }
 117
 118 #endif // TEST_LONGLONG
 119
 120 // ----------------------------------------------------------------------------
 121 // date time
 122 // ----------------------------------------------------------------------------
 123
 124 #ifdef TEST_TIME
 125
 126 #include <wx/datetime.h>
 127
 128 // this test miscellaneous static wxDateTime functions
 129 static void TestTimeStatic()
 130 {
 131     puts("\n*** wxDateTime static methods test ***");
 132
 133     // some info about the current date
 134     int year = wxDateTime::GetCurrentYear();
 135     printf("Current year %d is %sa leap one and has %d days.\n",
 136            year,
 137            wxDateTime::IsLeapYear(year) ? "" : "not ",
 138            wxDateTime::GetNumberOfDays(year));
 139
 140     wxDateTime::Month month = wxDateTime::GetCurrentMonth();
 141     printf("Current month is '%s' ('%s') and it has %d days\n",
 142            wxDateTime::GetMonthName(month, TRUE).c_str(),
 143            wxDateTime::GetMonthName(month).c_str(),
 144            wxDateTime::GetNumberOfDays(month));
 145
 146     // leap year logic
 147     static const nYears = 5;
 148     static const int years[2][nYears] =
 149     {
 150         // first line: the years to test
 151         { 1990, 1976, 2000, 2030, 1984, },
 152
 153         // second line: TRUE if leap, FALSE otherwise
 154         { FALSE, TRUE, TRUE, FALSE, TRUE }
 155     };
 156
 157     for ( size_t n = 0; n < nYears; n++ )
 158     {
 159         int year = years[0][n];
 160         bool should = years[1][n] != 0;
 161
 162         printf("Year %d is %sa leap year (should be: %s)\n",
 163                year,
 164                wxDateTime::IsLeapYear(year) ? "" : "not ",
 165                should ? "yes" : "no");
 166
 167         wxASSERT( should == wxDateTime::IsLeapYear(year) );
 168     }
 169 }
 170
 171 // test constructing wxDateTime objects
 172 static void TestTimeSet()
 173 {
 174     puts("\n*** wxDateTime construction test ***");
 175
 176     printf("Current time:\t%s\n", wxDateTime::Now().Format().c_str());
 177     printf("Unix epoch:\t%s\n", wxDateTime((time_t)0).Format().c_str());
 178     printf("Today noon:\t%s\n", wxDateTime(12, 0).Format().c_str());
 179     printf("May 29, 1976:\t%s\n", wxDateTime(29, wxDateTime::May, 1976).Format().c_str());
 180 }
 181
 182 #endif // TEST_TIME
 183
 184 // ----------------------------------------------------------------------------
 185 // threads
 186 // ----------------------------------------------------------------------------
 187
 188 #ifdef TEST_THREADS
 189
 190 #include <wx/thread.h>
 191
 192 static size_t gs_counter = (size_t)-1;
 193 static wxCriticalSection gs_critsect;
 194 static wxCondition gs_cond;
 195
 196 class MyJoinableThread : public wxThread
 197 {
 198 public:
 199     MyJoinableThread(size_t n) : wxThread(wxTHREAD_JOINABLE)
 200         { m_n = n; Create(); }
 201
 202     // thread execution starts here
 203     virtual ExitCode Entry();
 204
 205 private:
 206     size_t m_n;
 207 };
 208
 209 wxThread::ExitCode MyJoinableThread::Entry()
 210 {
 211     unsigned long res = 1;
 212     for ( size_t n = 1; n < m_n; n++ )
 213     {
 214         res *= n;
 215
 216         // it's a loooong calculation :-)
 217         Sleep(100);
 218     }
 219
 220     return (ExitCode)res;
 221 }
 222
 223 class MyDetachedThread : public wxThread
 224 {
 225 public:
 226     MyDetachedThread(size_t n, char ch) { m_n = n; m_ch = ch; Create(); }
 227
 228     // thread execution starts here
 229     virtual ExitCode Entry();
 230
 231     // and stops here
 232     virtual void OnExit();
 233
 234 private:
 235     size_t m_n; // number of characters to write
 236     char m_ch;  // character to write
 237 };
 238
 239 wxThread::ExitCode MyDetachedThread::Entry()
 240 {
 241     {
 242         wxCriticalSectionLocker lock(gs_critsect);
 243         if ( gs_counter == (size_t)-1 )
 244             gs_counter = 1;
 245         else
 246             gs_counter++;
 247     }
 248
 249     for ( size_t n = 0; n < m_n; n++ )
 250     {
 251         if ( TestDestroy() )
 252             break;
 253
 254         putchar(m_ch);
 255         fflush(stdout);
 256
 257         wxThread::Sleep(100);
 258     }
 259
 260     return 0;
 261 }
 262
 263 void MyDetachedThread::OnExit()
 264 {
 265     wxLogTrace("thread", "Thread %ld is in OnExit", GetId());
 266
 267     wxCriticalSectionLocker lock(gs_critsect);
 268     if ( !--gs_counter )
 269         gs_cond.Signal();
 270 }
 271
 272 void TestDetachedThreads()
 273 {
 274     puts("\n*** Testing detached threads ***");
 275
 276     static const size_t nThreads = 3;
 277     MyDetachedThread *threads[nThreads];
 278     size_t n;
 279     for ( n = 0; n < nThreads; n++ )
 280     {
 281         threads[n] = new MyDetachedThread(10, 'A' + n);
 282     }
 283
 284     threads[0]->SetPriority(WXTHREAD_MIN_PRIORITY);
 285     threads[1]->SetPriority(WXTHREAD_MAX_PRIORITY);
 286
 287     for ( n = 0; n < nThreads; n++ )
 288     {
 289         threads[n]->Run();
 290     }
 291
 292     // wait until all threads terminate
 293     gs_cond.Wait();
 294
 295     puts("");
 296 }
 297
 298 void TestJoinableThreads()
 299 {
 300     puts("\n*** Testing a joinable thread (a loooong calculation...) ***");
 301
 302     // calc 10! in the background
 303     MyJoinableThread thread(10);
 304     thread.Run();
 305
 306     printf("\nThread terminated with exit code %lu.\n",
 307            (unsigned long)thread.Wait());
 308 }
 309
 310 void TestThreadSuspend()
 311 {
 312     puts("\n*** Testing thread suspend/resume functions ***");
 313
 314     MyDetachedThread *thread = new MyDetachedThread(15, 'X');
 315
 316     thread->Run();
 317
 318     // this is for this demo only, in a real life program we'd use another
 319     // condition variable which would be signaled from wxThread::Entry() to
 320     // tell us that the thread really started running - but here just wait a
 321     // bit and hope that it will be enough (the problem is, of course, that
 322     // the thread might still not run when we call Pause() which will result
 323     // in an error)
 324     wxThread::Sleep(300);
 325
 326     for ( size_t n = 0; n < 3; n++ )
 327     {
 328         thread->Pause();
 329
 330         puts("\nThread suspended");
 331         if ( n > 0 )
 332         {
 333             // don't sleep but resume immediately the first time
 334             wxThread::Sleep(300);
 335         }
 336         puts("Going to resume the thread");
 337
 338         thread->Resume();
 339     }
 340
 341     // wait until the thread terminates
 342     gs_cond.Wait();
 343
 344     puts("");
 345 }
 346
 347 void TestThreadDelete()
 348 {
 349     // As above, using Sleep() is only for testing here - we must use some
 350     // synchronisation object instead to ensure that the thread is still
 351     // running when we delete it - deleting a detached thread which already
 352     // terminated will lead to a crash!
 353
 354     puts("\n*** Testing thread delete function ***");
 355
 356     MyDetachedThread *thread1 = new MyDetachedThread(30, 'Y');
 357
 358     thread1->Run();
 359
 360     wxThread::Sleep(300);
 361
 362     thread1->Delete();
 363
 364     puts("\nDeleted a running thread.");
 365
 366     MyDetachedThread *thread2 = new MyDetachedThread(30, 'Z');
 367
 368     thread2->Run();
 369
 370     wxThread::Sleep(300);
 371
 372     thread2->Pause();
 373
 374     thread2->Delete();
 375
 376     puts("\nDeleted a sleeping thread.");
 377
 378     MyJoinableThread *thread3 = new MyJoinableThread(20);
 379     thread3->Run();
 380
 381     thread3->Delete();
 382
 383     puts("\nDeleted a joinable thread.");
 384
 385     MyJoinableThread *thread4 = new MyJoinableThread(2);
 386     thread4->Run();
 387
 388     wxThread::Sleep(300);
 389
 390     thread4->Delete();
 391
 392     puts("\nDeleted a joinable thread which already terminated.");
 393
 394     puts("");
 395 }
 396
 397 #endif // TEST_THREADS
 398
 399 // ----------------------------------------------------------------------------
 400 // arrays
 401 // ----------------------------------------------------------------------------
 402
 403 #ifdef TEST_ARRAYS
 404
 405 void PrintArray(const char* name, const wxArrayString& array)
 406 {
 407     printf("Dump of the array '%s'\n", name);
 408
 409     size_t nCount = array.GetCount();
 410     for ( size_t n = 0; n < nCount; n++ )
 411     {
 412         printf("\t%s[%u] = '%s'\n", name, n, array[n].c_str());
 413     }
 414 }
 415
 416 #endif // TEST_ARRAYS
 417
 418 // ----------------------------------------------------------------------------
 419 // strings
 420 // ----------------------------------------------------------------------------
 421
 422 #ifdef TEST_STRINGS
 423
 424 #include "wx/timer.h"
 425
 426 void TestString()
 427 {
 428     wxStopWatch sw;
 429
 430     wxString a, b, c;
 431
 432     a.reserve (128);
 433     b.reserve (128);
 434     c.reserve (128);
 435
 436     for (int i = 0; i < 1000000; ++i)
 437     {
 438         a = "Hello";
 439         b = " world";
 440         c = "! How'ya doin'?";
 441         a += b;
 442         a += c;
 443         c = "Hello world! What's up?";
 444         if (c != a)
 445             c = "Doh!";
 446     }
 447
 448     printf ("TestString elapsed time: %ld\n", sw.Time());
 449 }
 450
 451 void TestPChar()
 452 {
 453     wxStopWatch sw;
 454
 455     char a [128];
 456     char b [128];
 457     char c [128];
 458
 459     for (int i = 0; i < 1000000; ++i)
 460     {
 461         strcpy (a, "Hello");
 462         strcpy (b, " world");
 463         strcpy (c, "! How'ya doin'?");
 464         strcat (a, b);
 465         strcat (a, c);
 466         strcpy (c, "Hello world! What's up?");
 467         if (strcmp (c, a) == 0)
 468             strcpy (c, "Doh!");
 469     }
 470
 471     printf ("TestPChar elapsed time: %ld\n", sw.Time());
 472 }
 473
 474 #endif // TEST_STRINGS
 475
 476 // ----------------------------------------------------------------------------
 477 // entry point
 478 // ----------------------------------------------------------------------------
 479
 480 int main(int argc, char **argv)
 481 {
 482     if ( !wxInitialize() )
 483     {
 484         fprintf(stderr, "Failed to initialize the wxWindows library, aborting.");
 485     }
 486
 487 #ifdef TEST_STRINGS
 488     TestPChar();
 489     TestString();
 490 #endif // TEST_STRINGS
 491
 492 #ifdef TEST_ARRAYS
 493     wxArrayString a1;
 494     a1.Add("tiger");
 495     a1.Add("cat");
 496     a1.Add("lion");
 497     a1.Add("dog");
 498     a1.Add("human");
 499     a1.Add("ape");
 500
 501     puts("*** Initially:");
 502
 503     PrintArray("a1", a1);
 504
 505     wxArrayString a2(a1);
 506     PrintArray("a2", a2);
 507
 508     wxSortedArrayString a3(a1);
 509     PrintArray("a3", a3);
 510
 511     puts("*** After deleting a string from a1");
 512     a1.Remove(2);
 513
 514     PrintArray("a1", a1);
 515     PrintArray("a2", a2);
 516     PrintArray("a3", a3);
 517
 518     puts("*** After reassigning a1 to a2 and a3");
 519     a3 = a2 = a1;
 520     PrintArray("a2", a2);
 521     PrintArray("a3", a3);
 522 #endif // TEST_ARRAYS
 523
 524 #ifdef TEST_LOG
 525     wxString s;
 526     for ( size_t n = 0; n < 8000; n++ )
 527     {
 528         s << (char)('A' + (n % 26));
 529     }
 530
 531     wxString msg;
 532     msg.Printf("A very very long message: '%s', the end!\n", s.c_str());
 533
 534     // this one shouldn't be truncated
 535     printf(msg);
 536
 537     // but this one will because log functions use fixed size buffer
 538     // (note that it doesn't need '\n' at the end neither - will be added
 539     //  by wxLog anyhow)
 540     wxLogMessage("A very very long message 2: '%s', the end!", s.c_str());
 541 #endif // TEST_LOG
 542
 543 #ifdef TEST_THREADS
 544     if ( argc > 1 && argv[1][0] == 't' )
 545         wxLog::AddTraceMask("thread");
 546
 547     if ( 0 )
 548         TestDetachedThreads();
 549     if ( 0 )
 550         TestJoinableThreads();
 551     if ( 0 )
 552         TestThreadSuspend();
 553     if ( 1 )
 554         TestThreadDelete();
 555
 556 #endif // TEST_THREADS
 557
 558 #ifdef TEST_LONGLONG
 559     if ( 0 )
 560         TestSpeed();
 561     if ( 1 )
 562         TestDivision();
 563 #endif // TEST_LONGLONG
 564
 565 #ifdef TEST_TIME
 566     TestTimeStatic();
 567     TestTimeSet();
 568 #endif // TEST_TIME
 569
 570     wxUninitialize();
 571
 572     return 0;
 573 }