chanegd wxTlsValue to be pointer-like instead of value-like which doesn't work for UDTs; use __thread keyword with mingw32 >= 4.3 too; use library-based thread-specific variables support in wxString cache now that it is fixed to work there; finally added a unit test for TLS stuff

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@55361 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

tests/thread/tls.cpp

@@ -0,0 +1,128 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        tests/thread/tls.cpp
+// Purpose:     wxTlsValue unit test
+// Author:      Vadim Zeitlin
+// Created:     2008-08-28
+// RCS-ID:      $Id$
+// Copyright:   (c) 2008 Vadim Zeitlin
+///////////////////////////////////////////////////////////////////////////////
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#include "testprec.h"
+
+#ifdef __BORLANDC__
+    #pragma hdrstop
+#endif
+
+#ifndef WX_PRECOMP
+#endif // WX_PRECOMP
+
+#include "wx/thread.h"
+#include "wx/tls.h"
+
+// ----------------------------------------------------------------------------
+// globals
+// ----------------------------------------------------------------------------
+
+namespace
+{
+
+// NB: this struct must be a POD, so don't use wxString as its member
+struct PerThreadData
+{
+    const char *name;
+    int number;
+};
+
+wxTLS_TYPE(PerThreadData) gs_threadDataVar;
+#define gs_threadData wxTLS_VALUE(gs_threadDataVar)
+
+wxTLS_TYPE(int) gs_threadIntVar;
+#define gs_threadInt wxTLS_VALUE(gs_threadIntVar)
+
+// ----------------------------------------------------------------------------
+// test thread
+// ----------------------------------------------------------------------------
+
+// this thread arbitrarily modifies all global thread-specific variables to
+// make sure that the changes in it are not visible from the main thread
+class TLSTestThread : public wxThread
+{
+public:
+    // ctor both creates and starts the thread
+    TLSTestThread() : wxThread(wxTHREAD_JOINABLE) { Create(); Run(); }
+
+    virtual void *Entry()
+    {
+        gs_threadInt = 17;
+
+        gs_threadData.name = "worker";
+        gs_threadData.number = 2;
+
+        CPPUNIT_ASSERT_EQUAL( "worker", gs_threadData.name );
+        CPPUNIT_ASSERT_EQUAL( 2, gs_threadData.number );
+
+        return NULL;
+    }
+};
+
+} // anonymous namespace
+
+// ----------------------------------------------------------------------------
+// test class
+// ----------------------------------------------------------------------------
+
+class TLSTestCase : public CppUnit::TestCase
+{
+public:
+    TLSTestCase() { }
+
+private:
+    CPPUNIT_TEST_SUITE( TLSTestCase );
+        CPPUNIT_TEST( TestInt );
+        CPPUNIT_TEST( TestStruct );
+    CPPUNIT_TEST_SUITE_END();
+
+    void TestInt();
+    void TestStruct();
+
+    DECLARE_NO_COPY_CLASS(TLSTestCase)
+};
+
+// register in the unnamed registry so that these tests are run by default
+CPPUNIT_TEST_SUITE_REGISTRATION( TLSTestCase );
+
+// also include in it's own registry so that these tests can be run alone
+CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( TLSTestCase, "TLSTestCase" );
+
+void TLSTestCase::TestInt()
+{
+    CPPUNIT_ASSERT_EQUAL( 0, gs_threadInt );
+
+    gs_threadInt++;
+    CPPUNIT_ASSERT_EQUAL( 1, gs_threadInt );
+
+    TLSTestThread().Wait();
+
+    CPPUNIT_ASSERT_EQUAL( 1, gs_threadInt );
+}
+
+void TLSTestCase::TestStruct()
+{
+    CPPUNIT_ASSERT_EQUAL( "", gs_threadData.name );
+    CPPUNIT_ASSERT_EQUAL( 0, gs_threadData.number );
+
+    gs_threadData.name = "main";
+    gs_threadData.number = 1;
+
+    CPPUNIT_ASSERT_EQUAL( 1, gs_threadData.number );
+
+    TLSTestThread().Wait();
+
+    CPPUNIT_ASSERT_EQUAL( "main", gs_threadData.name );
+    CPPUNIT_ASSERT_EQUAL( 1, gs_threadData.number );
+}
+