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