void BufferThread(void *vp)
{
BufferThreadData * pThreadData = (BufferThreadData *) vp;
int bytesRead;
int bytesToRead;
DWORD lastUpdate = 0;
showPercentage(0);
ShowWindowAsync(hwndText, SW_HIDE);
ShowWindowAsync(hwndProgress, SW_SHOW);
while (!pThreadData->killBufferThread)
{
// read into the buffer if it isn't full
if (((pThreadData->circularBufferEnd + 1) % CIRCULAR_BUFFER_SIZE) != pThreadData->circularBufferStart)
{
if (pThreadData->circularBufferStart > pThreadData->circularBufferEnd)
bytesToRead = pThreadData->circularBufferStart - pThreadData->circularBufferEnd - 1;
else
bytesToRead = CIRCULAR_BUFFER_SIZE - pThreadData->circularBufferEnd;
bytesRead = recv(pThreadData->tcpSocket, pThreadData->circularBuffer + pThreadData->circularBufferEnd, 1, 0);
if ((bytesRead == SOCKET_ERROR) || (bytesRead == 0))
break;
pThreadData->bytesRead += bytesRead;
pThreadData->circularBufferEnd = (pThreadData->circularBufferEnd + bytesRead) % CIRCULAR_BUFFER_SIZE;
}
else
Sleep(10);
if (GetTickCount() - lastUpdate > 100)
{
int start = pThreadData->circularBufferStart;
int end = pThreadData->circularBufferEnd;
if (end < start)
end += CIRCULAR_BUFFER_SIZE;
showPercentage((end - start) * 100 / CIRCULAR_BUFFER_SIZE);
lastUpdate = GetTickCount();
}
}
pThreadData->killBufferThread = 1;
_endthread();
}
//---------------------------------------------------------------------------
__fastcall TfrmExecutie::TfrmExecutie(TComponent* Owner, String uitv, int percentage)
: TfrmTestwin(Owner, percentage == -1)
{
if (percentage != -1) showPercentage (percentage);
uitvaller = uitv;
done = false;
}
void BufferThread( void *vp )
{
BufferThreadData* pThreadData = (BufferThreadData *) vp;
int bytesRead = 0;
int bytesToRead = 0;
#ifdef INCLUDE_STATUS_WINDOW
showPercentage(0);
ShowWindowAsync(hwndText, SW_HIDE);
ShowWindowAsync(hwndProgress, SW_SHOW);
#endif
while ( !pThreadData->killBufferThread )
{
// read into the buffer if it isn't full
if ( pThreadData->circularBufferFilled < CIRCULAR_BUFFER_SIZE )
{
if ( pThreadData->circularBufferStart > pThreadData->circularBufferEnd )
{
bytesToRead = pThreadData->circularBufferStart - pThreadData->circularBufferEnd;
}
else
{
bytesToRead = CIRCULAR_BUFFER_SIZE - pThreadData->circularBufferEnd;
}
if ( bytesToRead > 4096 )
{
bytesToRead = 4096;
}
bytesRead = recv( pThreadData->tcpSocket,
pThreadData->circularBuffer + pThreadData->circularBufferEnd,
bytesToRead,
0 );
if ( ( SOCKET_ERROR == bytesRead ) || ( bytesRead == 0 ) )
{
break;
}
pThreadData->bytesRead += bytesRead;
pThreadData->circularBufferFilled += bytesRead;
pThreadData->circularBufferEnd = (pThreadData->circularBufferEnd + bytesRead) % CIRCULAR_BUFFER_SIZE;
}
else
{
// wait for more data to come
Sleep(50);
}
}
pThreadData->killBufferThread = 1;
_endthread();
}
size_t httpRead( void* ptr,
size_t size,
size_t nmemb,
void* datasource )
{
int bytesRequested = size * nmemb;
int bytesRead = 0;
int bytesToCopy;
BufferThreadData * pThreadData = (BufferThreadData *) datasource;
while ((bytesRead < bytesRequested) && (!pThreadData->killBufferThread || (pThreadData->circularBufferFilled > 0)))
{
if (pThreadData->circularBufferFilled > 0)
{
if (pThreadData->circularBufferStart < pThreadData->circularBufferEnd)
bytesToCopy = pThreadData->circularBufferEnd - pThreadData->circularBufferStart;
else
bytesToCopy = CIRCULAR_BUFFER_SIZE - pThreadData->circularBufferStart;
if (bytesRead + bytesToCopy > bytesRequested)
bytesToCopy = bytesRequested - bytesRead;
memcpy((char *) ptr + bytesRead, pThreadData->circularBuffer + pThreadData->circularBufferStart, bytesToCopy);
pThreadData->circularBufferStart = (pThreadData->circularBufferStart + bytesToCopy) % CIRCULAR_BUFFER_SIZE;
pThreadData->circularBufferFilled -= bytesToCopy;
#ifdef INCLUDE_STATUS_WINDOW
showPercentage(pThreadData->circularBufferFilled * 100 / CIRCULAR_BUFFER_SIZE);
#endif
bytesRead += bytesToCopy;
}
}
/* Who knows... maybe there's still some data in the buffer? *CM*
// Don't give any data back if we're supposed to be dead
if (pThreadData->killBufferThread)
return 0;
*/
return bytesRead / size;
}
