*
 * Side effects:
 *	Adjusts the block time if needed.
 *
 *----------------------------------------------------------------------
 */

#ifdef __cplusplus
#define min(a, b)  (((a) < (b)) ? (a) : (b))
#endif

void
SerialSetupProc(
    ClientData data,		/* Not used. */
    int flags)			/* Event flags as passed to Tcl_DoOneEvent. */
{
    SerialInfo *infoPtr;
    int block = 1;

	/*
	 * Queue an event if the serial is signaled for reading or writing.
	 */

	if (needEvent) {
	    infoPtr->flags |= SERIAL_PENDING;
	    evPtr = (SerialEvent *)ckalloc(sizeof(SerialEvent));
	    evPtr->header.proc = SerialEventProc;
	    evPtr->infoPtr = infoPtr;
	    Tcl_QueueEvent((Tcl_Event *) evPtr, TCL_QUEUE_TAIL);
	}
    }
}


	     * Reallocate the buffer to be large enough to hold the data.
	     */

	    if (infoPtr->writeBuf) {
		ckfree(infoPtr->writeBuf);
	    }
	    infoPtr->writeBufLen = toWrite;
	    infoPtr->writeBuf = (char *)ckalloc(toWrite);
	}
	memcpy(infoPtr->writeBuf, buf, toWrite);
	infoPtr->toWrite = toWrite;
	ResetEvent(infoPtr->evWritable);
	TclPipeThreadSignal(&infoPtr->writeTI);
	bytesWritten = (DWORD) toWrite;

    char *channelName,
    int permissions)
{
    SerialInfo *infoPtr;

    SerialInit();

    infoPtr = (SerialInfo *)ckalloc(sizeof(SerialInfo));
    memset(infoPtr, 0, sizeof(SerialInfo));

    infoPtr->validMask = permissions;
    infoPtr->handle = handle;
    infoPtr->channel = (Tcl_Channel) NULL;
    infoPtr->readable = 0;
    infoPtr->writable = 1;