tests/thread/tls.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        tests/thread/tls.cpp
   3 // Purpose:     wxTlsValue unit test
   4 // Author:      Vadim Zeitlin
   5 // Created:     2008-08-28
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2008 Vadim Zeitlin
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10 // ----------------------------------------------------------------------------
  11 // headers
  12 // ----------------------------------------------------------------------------
  13
  14 #include "testprec.h"
  15
  16 #ifdef __BORLANDC__
  17     #pragma hdrstop
  18 #endif
  19
  20 #ifndef WX_PRECOMP
  21 #endif // WX_PRECOMP
  22
  23 #include "wx/thread.h"
  24 #include "wx/tls.h"
  25
  26 // ----------------------------------------------------------------------------
  27 // globals
  28 // ----------------------------------------------------------------------------
  29
  30 namespace
  31 {
  32
  33 // NB: this struct must be a POD, so don't use wxString as its member
  34 struct PerThreadData
  35 {
  36     const char *name;
  37     int number;
  38 };
  39
  40 wxTLS_TYPE(PerThreadData) gs_threadDataVar;
  41 #define gs_threadData wxTLS_VALUE(gs_threadDataVar)
  42
  43 wxTLS_TYPE(int) gs_threadIntVar;
  44 #define gs_threadInt wxTLS_VALUE(gs_threadIntVar)
  45
  46 // ----------------------------------------------------------------------------
  47 // test thread
  48 // ----------------------------------------------------------------------------
  49
  50 // this thread arbitrarily modifies all global thread-specific variables to
  51 // make sure that the changes in it are not visible from the main thread
  52 class TLSTestThread : public wxThread
  53 {
  54 public:
  55     // ctor both creates and starts the thread
  56     TLSTestThread() : wxThread(wxTHREAD_JOINABLE) { Create(); Run(); }
  57
  58     virtual void *Entry()
  59     {
  60         gs_threadInt = 17;
  61
  62         gs_threadData.name = "worker";
  63         gs_threadData.number = 2;
  64
  65         CPPUNIT_ASSERT_EQUAL( "worker", gs_threadData.name );
  66         CPPUNIT_ASSERT_EQUAL( 2, gs_threadData.number );
  67
  68         return NULL;
  69     }
  70 };
  71
  72 } // anonymous namespace
  73
  74 // ----------------------------------------------------------------------------
  75 // test class
  76 // ----------------------------------------------------------------------------
  77
  78 class TLSTestCase : public CppUnit::TestCase
  79 {
  80 public:
  81     TLSTestCase() { }
  82
  83 private:
  84     CPPUNIT_TEST_SUITE( TLSTestCase );
  85         CPPUNIT_TEST( TestInt );
  86         CPPUNIT_TEST( TestStruct );
  87     CPPUNIT_TEST_SUITE_END();
  88
  89     void TestInt();
  90     void TestStruct();
  91
  92     DECLARE_NO_COPY_CLASS(TLSTestCase)
  93 };
  94
  95 // register in the unnamed registry so that these tests are run by default
  96 CPPUNIT_TEST_SUITE_REGISTRATION( TLSTestCase );
  97
  98 // also include in it's own registry so that these tests can be run alone
  99 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( TLSTestCase, "TLSTestCase" );
 100
 101 void TLSTestCase::TestInt()
 102 {
 103     CPPUNIT_ASSERT_EQUAL( 0, gs_threadInt );
 104
 105     gs_threadInt++;
 106     CPPUNIT_ASSERT_EQUAL( 1, gs_threadInt );
 107
 108     TLSTestThread().Wait();
 109
 110     CPPUNIT_ASSERT_EQUAL( 1, gs_threadInt );
 111 }
 112
 113 void TLSTestCase::TestStruct()
 114 {
 115     CPPUNIT_ASSERT_EQUAL( "", gs_threadData.name );
 116     CPPUNIT_ASSERT_EQUAL( 0, gs_threadData.number );
 117
 118     gs_threadData.name = "main";
 119     gs_threadData.number = 1;
 120
 121     CPPUNIT_ASSERT_EQUAL( 1, gs_threadData.number );
 122
 123     TLSTestThread().Wait();
 124
 125     CPPUNIT_ASSERT_EQUAL( "main", gs_threadData.name );
 126     CPPUNIT_ASSERT_EQUAL( 1, gs_threadData.number );
 127 }
 128