examples/Base/ThreadsAndProcesses/TLS1/TLS1exe.cpp

//TLS1exe.cpp

/*
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Description:  
An example to demonstrate Thread Local Storage (TLS)
(See also the DLL implementation in TLS1dll.cpp)
*/


        // standard example header
#include "CommonFramework.h"
        // dll header file
#include "TLS1dll.h"

//
// Common literal text
//

_LIT(KTxtNewLines,"\n\n");


        // This function uses a statically loaded DLL to create a new CSetter object.
        // It then uses this object to set up some static data accessed through 
    // thread-local storage.
        // Thex example then shows how the static data can be accessed through
        // the member functions of another class (CGeneral).
        // All implementation code for these two classes is provided in the DLL
LOCAL_C void doExampleL()
    {
                // Introduction
        _LIT(KTxtIntro,"Thread local storage example (1) \n\n");
        console->Printf(KTxtIntro);
        
                // Construct CSetter object, set up some static data via the
                // thread local storage and use CSetter to show it.
        CSetter* theSetter = new (ELeave) CSetter(*console);
        CleanupStack::PushL(theSetter);
        
        _LIT(KTxt1,"SOME STATIC TEXT");
        theSetter->SetStaticTextL(KTxt1);
        _LIT(KTxt2,"Static data set by CSetter object\n");
        console->Printf(KTxt2);
        _LIT(KTxt3,"Static data displayed by CSetter object...\n");
        console->Printf(KTxt3);
        theSetter->ShowStaticText();

                // Construct a CGeneral object and see that it can show 
            // this static data. CGeneral knows nothing about the CSetter object
        CGeneral* theGeneral = new  (ELeave) CGeneral(*console);
        CleanupStack::Pop();
        _LIT(KTxt4,"Static data now accessed by CGeneral object...\n");
        console->Printf(KTxt4);
        theGeneral->ShowStaticText();
        console->Printf(KTxtNewLines);

                // Delete the CSetter object and then use the CGeneral object to
            // try and show static data - there should be none.
        delete theSetter;
        _LIT(KTxt5,"Static data accessed again by CGeneral object after deletion of data...\n");
        console->Printf(KTxt5);
        theGeneral->ShowStaticText();
        console->Printf(KTxtNewLines);

                // tidy up before finishing the example
        delete theGeneral;
        }

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