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 size_t nYears = 5;
 148     static const size_t 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 // test time zones stuff
 183 static void TestTimeZones()
 184 {
 185     puts("\n*** wxDateTime timezone test ***");
 186
 187     wxDateTime now = wxDateTime::Now();
 188
 189     printf("Current GMT time:\t%s\n", now.ToGMT().Format().c_str());
 190     //TODO printf("Unix epoch (GMT):\t%s\n", wxDateTime((time_t)0).MakeGMT().Format().c_str());
 191     printf("Current time in Paris:\t%s\n", now.ToTimezone(wxDateTime::CET).Format().c_str());
 192     printf("               Moscow:\t%s\n", now.ToTimezone(wxDateTime::MSK).Format().c_str());
 193     printf("             New York:\t%s\n", now.ToTimezone(wxDateTime::EST).Format().c_str());
 194 }
 195
 196 // test some minimal support for the dates outside the standard range
 197 static void TestTimeRange()
 198 {
 199     puts("\n*** wxDateTime out-of-standard-range dates test ***");
 200
 201     printf("JDN 0:     \t%s\n",
 202             wxDateTime(0.0).Format().c_str());
 203     printf("Jan 1, 1AD:\t%s\n",
 204             wxDateTime(1, wxDateTime::Jan, 1).Format().c_str());
 205     printf("May 29, 2099:\t%s\n",
 206             wxDateTime(29, wxDateTime::May, 2099).Format().c_str());
 207 }
 208
 209 // test conversions to JDN &c
 210 static void TestTimeJulian()
 211 {
 212     puts("\n*** wxDateTime to JDN test ***");
 213
 214     printf("JDN of current time:\t%f\n", wxDateTime::Now().GetJulianDayNumber());
 215     printf("JDN of Jan 1, 1900: \t%f\n",
 216             wxDateTime(1, wxDateTime::Jan, 1900).GetJulianDayNumber());
 217     printf("JDN of Jan 1, 1BC:  \t%f\n",
 218             wxDateTime(1, wxDateTime::Jan, 0).GetJulianDayNumber());
 219     printf("JDN 0:              \t%f\n",
 220             wxDateTime(24, wxDateTime::Nov, -4713, 12, 0, 0).GetJulianDayNumber());
 221 }
 222
 223 #endif // TEST_TIME
 224
 225 // ----------------------------------------------------------------------------
 226 // threads
 227 // ----------------------------------------------------------------------------
 228
 229 #ifdef TEST_THREADS
 230
 231 #include <wx/thread.h>
 232
 233 static size_t gs_counter = (size_t)-1;
 234 static wxCriticalSection gs_critsect;
 235 static wxCondition gs_cond;
 236
 237 class MyJoinableThread : public wxThread
 238 {
 239 public:
 240     MyJoinableThread(size_t n) : wxThread(wxTHREAD_JOINABLE)
 241         { m_n = n; Create(); }
 242
 243     // thread execution starts here
 244     virtual ExitCode Entry();
 245
 246 private:
 247     size_t m_n;
 248 };
 249
 250 wxThread::ExitCode MyJoinableThread::Entry()
 251 {
 252     unsigned long res = 1;
 253     for ( size_t n = 1; n < m_n; n++ )
 254     {
 255         res *= n;
 256
 257         // it's a loooong calculation :-)
 258         Sleep(100);
 259     }
 260
 261     return (ExitCode)res;
 262 }
 263
 264 class MyDetachedThread : public wxThread
 265 {
 266 public:
 267     MyDetachedThread(size_t n, char ch)
 268     {
 269         m_n = n;
 270         m_ch = ch;
 271         m_cancelled = FALSE;
 272
 273         Create();
 274     }
 275
 276     // thread execution starts here
 277     virtual ExitCode Entry();
 278
 279     // and stops here
 280     virtual void OnExit();
 281
 282 private:
 283     size_t m_n; // number of characters to write
 284     char m_ch;  // character to write
 285
 286     bool m_cancelled;   // FALSE if we exit normally
 287 };
 288
 289 wxThread::ExitCode MyDetachedThread::Entry()
 290 {
 291     {
 292         wxCriticalSectionLocker lock(gs_critsect);
 293         if ( gs_counter == (size_t)-1 )
 294             gs_counter = 1;
 295         else
 296             gs_counter++;
 297     }
 298
 299     for ( size_t n = 0; n < m_n; n++ )
 300     {
 301         if ( TestDestroy() )
 302         {
 303             m_cancelled = TRUE;
 304
 305             break;
 306         }
 307
 308         putchar(m_ch);
 309         fflush(stdout);
 310
 311         wxThread::Sleep(100);
 312     }
 313
 314     return 0;
 315 }
 316
 317 void MyDetachedThread::OnExit()
 318 {
 319     wxLogTrace("thread", "Thread %ld is in OnExit", GetId());
 320
 321     wxCriticalSectionLocker lock(gs_critsect);
 322     if ( !--gs_counter && !m_cancelled )
 323         gs_cond.Signal();
 324 }
 325
 326 void TestDetachedThreads()
 327 {
 328     puts("\n*** Testing detached threads ***");
 329
 330     static const size_t nThreads = 3;
 331     MyDetachedThread *threads[nThreads];
 332     size_t n;
 333     for ( n = 0; n < nThreads; n++ )
 334     {
 335         threads[n] = new MyDetachedThread(10, 'A' + n);
 336     }
 337
 338     threads[0]->SetPriority(WXTHREAD_MIN_PRIORITY);
 339     threads[1]->SetPriority(WXTHREAD_MAX_PRIORITY);
 340
 341     for ( n = 0; n < nThreads; n++ )
 342     {
 343         threads[n]->Run();
 344     }
 345
 346     // wait until all threads terminate
 347     gs_cond.Wait();
 348
 349     puts("");
 350 }
 351
 352 void TestJoinableThreads()
 353 {
 354     puts("\n*** Testing a joinable thread (a loooong calculation...) ***");
 355
 356     // calc 10! in the background
 357     MyJoinableThread thread(10);
 358     thread.Run();
 359
 360     printf("\nThread terminated with exit code %lu.\n",
 361            (unsigned long)thread.Wait());
 362 }
 363
 364 void TestThreadSuspend()
 365 {
 366     puts("\n*** Testing thread suspend/resume functions ***");
 367
 368     MyDetachedThread *thread = new MyDetachedThread(15, 'X');
 369
 370     thread->Run();
 371
 372     // this is for this demo only, in a real life program we'd use another
 373     // condition variable which would be signaled from wxThread::Entry() to
 374     // tell us that the thread really started running - but here just wait a
 375     // bit and hope that it will be enough (the problem is, of course, that
 376     // the thread might still not run when we call Pause() which will result
 377     // in an error)
 378     wxThread::Sleep(300);
 379
 380     for ( size_t n = 0; n < 3; n++ )
 381     {
 382         thread->Pause();
 383
 384         puts("\nThread suspended");
 385         if ( n > 0 )
 386         {
 387             // don't sleep but resume immediately the first time
 388             wxThread::Sleep(300);
 389         }
 390         puts("Going to resume the thread");
 391
 392         thread->Resume();
 393     }
 394
 395     puts("Waiting until it terminates now");
 396
 397     // wait until the thread terminates
 398     gs_cond.Wait();
 399
 400     puts("");
 401 }
 402
 403 void TestThreadDelete()
 404 {
 405     // As above, using Sleep() is only for testing here - we must use some
 406     // synchronisation object instead to ensure that the thread is still
 407     // running when we delete it - deleting a detached thread which already
 408     // terminated will lead to a crash!
 409
 410     puts("\n*** Testing thread delete function ***");
 411
 412     MyDetachedThread *thread0 = new MyDetachedThread(30, 'W');
 413
 414     thread0->Delete();
 415
 416     puts("\nDeleted a thread which didn't start to run yet.");
 417
 418     MyDetachedThread *thread1 = new MyDetachedThread(30, 'Y');
 419
 420     thread1->Run();
 421
 422     wxThread::Sleep(300);
 423
 424     thread1->Delete();
 425
 426     puts("\nDeleted a running thread.");
 427
 428     MyDetachedThread *thread2 = new MyDetachedThread(30, 'Z');
 429
 430     thread2->Run();
 431
 432     wxThread::Sleep(300);
 433
 434     thread2->Pause();
 435
 436     thread2->Delete();
 437
 438     puts("\nDeleted a sleeping thread.");
 439
 440     MyJoinableThread thread3(20);
 441     thread3.Run();
 442
 443     thread3.Delete();
 444
 445     puts("\nDeleted a joinable thread.");
 446
 447     MyJoinableThread thread4(2);
 448     thread4.Run();
 449
 450     wxThread::Sleep(300);
 451
 452     thread4.Delete();
 453
 454     puts("\nDeleted a joinable thread which already terminated.");
 455
 456     puts("");
 457 }
 458
 459 #endif // TEST_THREADS
 460
 461 // ----------------------------------------------------------------------------
 462 // arrays
 463 // ----------------------------------------------------------------------------
 464
 465 #ifdef TEST_ARRAYS
 466
 467 void PrintArray(const char* name, const wxArrayString& array)
 468 {
 469     printf("Dump of the array '%s'\n", name);
 470
 471     size_t nCount = array.GetCount();
 472     for ( size_t n = 0; n < nCount; n++ )
 473     {
 474         printf("\t%s[%u] = '%s'\n", name, n, array[n].c_str());
 475     }
 476 }
 477
 478 #endif // TEST_ARRAYS
 479
 480 // ----------------------------------------------------------------------------
 481 // strings
 482 // ----------------------------------------------------------------------------
 483
 484 #ifdef TEST_STRINGS
 485
 486 #include "wx/timer.h"
 487
 488 void TestString()
 489 {
 490     wxStopWatch sw;
 491
 492     wxString a, b, c;
 493
 494     a.reserve (128);
 495     b.reserve (128);
 496     c.reserve (128);
 497
 498     for (int i = 0; i < 1000000; ++i)
 499     {
 500         a = "Hello";
 501         b = " world";
 502         c = "! How'ya doin'?";
 503         a += b;
 504         a += c;
 505         c = "Hello world! What's up?";
 506         if (c != a)
 507             c = "Doh!";
 508     }
 509
 510     printf ("TestString elapsed time: %ld\n", sw.Time());
 511 }
 512
 513 void TestPChar()
 514 {
 515     wxStopWatch sw;
 516
 517     char a [128];
 518     char b [128];
 519     char c [128];
 520
 521     for (int i = 0; i < 1000000; ++i)
 522     {
 523         strcpy (a, "Hello");
 524         strcpy (b, " world");
 525         strcpy (c, "! How'ya doin'?");
 526         strcat (a, b);
 527         strcat (a, c);
 528         strcpy (c, "Hello world! What's up?");
 529         if (strcmp (c, a) == 0)
 530             strcpy (c, "Doh!");
 531     }
 532
 533     printf ("TestPChar elapsed time: %ld\n", sw.Time());
 534 }
 535
 536 #endif // TEST_STRINGS
 537
 538 // ----------------------------------------------------------------------------
 539 // entry point
 540 // ----------------------------------------------------------------------------
 541
 542 int main(int argc, char **argv)
 543 {
 544     if ( !wxInitialize() )
 545     {
 546         fprintf(stderr, "Failed to initialize the wxWindows library, aborting.");
 547     }
 548
 549 #ifdef TEST_STRINGS
 550     TestPChar();
 551     TestString();
 552 #endif // TEST_STRINGS
 553
 554 #ifdef TEST_ARRAYS
 555     wxArrayString a1;
 556     a1.Add("tiger");
 557     a1.Add("cat");
 558     a1.Add("lion");
 559     a1.Add("dog");
 560     a1.Add("human");
 561     a1.Add("ape");
 562
 563     puts("*** Initially:");
 564
 565     PrintArray("a1", a1);
 566
 567     wxArrayString a2(a1);
 568     PrintArray("a2", a2);
 569
 570     wxSortedArrayString a3(a1);
 571     PrintArray("a3", a3);
 572
 573     puts("*** After deleting a string from a1");
 574     a1.Remove(2);
 575
 576     PrintArray("a1", a1);
 577     PrintArray("a2", a2);
 578     PrintArray("a3", a3);
 579
 580     puts("*** After reassigning a1 to a2 and a3");
 581     a3 = a2 = a1;
 582     PrintArray("a2", a2);
 583     PrintArray("a3", a3);
 584 #endif // TEST_ARRAYS
 585
 586 #ifdef TEST_LOG
 587     wxString s;
 588     for ( size_t n = 0; n < 8000; n++ )
 589     {
 590         s << (char)('A' + (n % 26));
 591     }
 592
 593     wxString msg;
 594     msg.Printf("A very very long message: '%s', the end!\n", s.c_str());
 595
 596     // this one shouldn't be truncated
 597     printf(msg);
 598
 599     // but this one will because log functions use fixed size buffer
 600     // (note that it doesn't need '\n' at the end neither - will be added
 601     //  by wxLog anyhow)
 602     wxLogMessage("A very very long message 2: '%s', the end!", s.c_str());
 603 #endif // TEST_LOG
 604
 605 #ifdef TEST_THREADS
 606     if ( argc > 1 && argv[1][0] == 't' )
 607         wxLog::AddTraceMask("thread");
 608
 609     if ( 1 )
 610         TestDetachedThreads();
 611     if ( 1 )
 612         TestJoinableThreads();
 613     if ( 1 )
 614         TestThreadSuspend();
 615     if ( 1 )
 616         TestThreadDelete();
 617
 618 #endif // TEST_THREADS
 619
 620 #ifdef TEST_LONGLONG
 621     if ( 0 )
 622         TestSpeed();
 623     if ( 1 )
 624         TestDivision();
 625 #endif // TEST_LONGLONG
 626
 627 #ifdef TEST_TIME
 628     TestTimeStatic();
 629     TestTimeSet();
 630     TestTimeZones();
 631     TestTimeRange();
 632     TestTimeJulian();
 633 #endif // TEST_TIME
 634
 635     wxUninitialize();
 636
 637     return 0;
 638 }