C++ (Cpp) RChunk::Open Examples

Example #1

File: FixQD.cpp Project: flaithbheartaigh/almalert

void CLoadNotifier::PatchL(void)
{
  _LIT(KSysapStackMask,"*Sysap::$STK");
  _LIT(KGD1Eng,"gd1eng.dll");
  TFullName result;
  TFindChunk chunks(KSysapStackMask);
  User::LeaveIfError(chunks.Next(result));
  RChunk chunk;
  User::LeaveIfError(chunk.Open(chunks,EOwnerThread));
  CleanupClosePushL(chunk);
  RLibrary gd1eng;
  User::LeaveIfError(gd1eng.Load(KGD1Eng));
  CleanupClosePushL(gd1eng);
  TUint8* export1=(TUint8*)gd1eng.Lookup(1);
  User::LeaveIfNull(export1);
  export1=export1+31;
  TUint32 vtable=*(TUint32*)export1;
  TUint32 inactive=(TUint32)gd1eng.Lookup(4);
  User::LeaveIfNull((TAny*)inactive);
  inactive+=56;

  TUint32* data=(TUint32*)(chunk.Base()+chunk.Bottom());
  TInt length=(chunk.Top()-chunk.Bottom())/sizeof(TUint32);
  TInt flagIndex=0,inactiveIndex=0;
  for(TInt i=0;i<length;i++)
  {
    if(!flagIndex&&data[i]==vtable)
    {
      flagIndex=i+19;
    }
    if(!inactiveIndex&&data[i]==inactive)
    {
      inactiveIndex=i;
    }
    if(flagIndex&&inactiveIndex) break;
  }
  if(flagIndex&&inactiveIndex)
  {
    data[inactiveIndex+2]=data[inactiveIndex];
    data[flagIndex]=1;
  }
  CleanupStack::PopAndDestroy(2); //gd1eng, chunk
}

Example #2

File: T_fontsessioncacheproc.cpp Project: cdaffara/symbiandump-os2

void MainL()
    {
    RChunk gChunk;
    User::LeaveIfError(gChunk.Open(1));
    CleanupClosePushL(gChunk);
    
    TInt offset;
    User::LeaveIfError(User::GetTIntParameter(2,offset));
    TInt SessionHandle;
    User::LeaveIfError(User::GetTIntParameter(3,SessionHandle));
    
    CRunProc *test = new (ELeave) CRunProc;
    
    test->setFont(reinterpret_cast<CFont*>(offset + reinterpret_cast<TInt>(gChunk.Base())));
    test->setHandle(SessionHandle);
    CleanupStack::PushL(test);

    RDebug::Print(_L("T_fontsessioncacheproc MainL()"));
    test->RunTestL();
    
    CleanupStack::PopAndDestroy(2);
    }