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/************************************************************************
*
* cit.h --
*
*
* Copyright 1992, 1993 Data General Corporation;
* Copyright 1992, 1993 OMRON Corporation
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that neither the name OMRON or DATA GENERAL be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission of the party whose name is to be used. Neither
* OMRON or DATA GENERAL make any representation about the suitability of this
* software for any purpose. It is provided "as is" without express or
* implied warranty.
*
* OMRON AND DATA GENERAL EACH DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
* IN NO EVENT SHALL OMRON OR DATA GENERAL BE LIABLE FOR ANY SPECIAL, INDIRECT
* OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*
************************************************************************/
/* $XConsortium: cit.h,v 1.2 94/01/11 20:54:43 rob Exp $ */
#ifndef CIT_H
#define CIT_H
#include "misc.h"
/***********************************************************************/
#define RECALCULATE_NEXT_FREE_CLIENT(cid) \
{ \
if ((cid) < nextFreeClientID) \
{ \
nextFreeClientID = (cid); \
} \
clients[(cid)] = NullClient; \
\
while (!clients[currentMaxClients-1]) \
{ \
currentMaxClients--; \
} \
}
/***********************************************************************/
#define get_req_len(req,cli) ((cli)->swapped ? \
lswaps((req)->length) : (req)->length)
#define get_big_req_len(req,cli) ((cli)->swapped ? \
lswapl(((xBigReq *)(req))->length) : \
((xBigReq *)(req))->length)
typedef struct {
CARD8 reqType;
CARD8 data;
CARD16 zero B16;
CARD32 length B32;
} xBigReq;
/***********************************************************************/
#define GET_BYTES_NEEDED(client, gotnow, needed, move_header) \
{ \
if (gotnow < sizeof(xReq)) \
{ \
needed = sizeof(xReq); \
} \
else \
{ \
needed = get_req_len((xReq *)oci->bufptr, client); \
if (!needed && client->big_requests) \
{ \
move_header = TRUE; \
if (gotnow < sizeof(xBigReq)) \
{ \
needed = sizeof(xBigReq) >> 2; \
} \
else \
{ \
needed = get_big_req_len((xReq *)oci->bufptr, client); \
} \
} \
client->req_len = needed; \
if (needed) \
{ \
needed <<= 2; \
} \
else \
{ \
needed = (client->big_requests) ? sizeof(xBigReq): sizeof(xReq);\
} \
} \
}
/***********************************************************************/
#define READ_REQUEST_FROM_CLIENT(gotnow, client) \
{ \
register Bool move_header = FALSE; \
register int needed; \
register ConnectionInputPtr oci; \
\
oci = ((OsCommPtr) client->osPrivate)->input; \
\
oci->bufptr += oci->lenLastReq; \
gotnow = oci->bufcnt + oci->buffer - oci->bufptr; \
\
GET_BYTES_NEEDED(client, gotnow, needed, move_header); \
\
while (gotnow < needed) \
{ \
gotnow = ReadRequestFromClient(client, gotnow, needed); \
if (gotnow <= 0) \
{ \
goto close_down; \
} \
GET_BYTES_NEEDED(client, gotnow, needed, move_header); \
} \
oci->lenLastReq = needed; \
if (move_header) \
{ \
register xReq *request; \
\
request = (xReq *)oci->bufptr; \
oci->bufptr += (sizeof(xBigReq) - sizeof(xReq)); \
*(xReq *)oci->bufptr = *request; \
oci->lenLastReq -= (sizeof(xBigReq) - sizeof(xReq)); \
client->req_len -= (sizeof(xBigReq) - sizeof(xReq)) >> 2; \
} \
client->requestBuffer = (pointer)oci->bufptr; \
}
/***********************************************************************/
/* exported functions */
extern Bool CreateClientInputThread();
extern void CloseDownClient();
extern void KillAllClients();
extern void CloseDownRetainedResources();
extern void InitClientGlobals();
extern void InitClient();
extern unsigned long GetNextSerialNumber();
extern void MarkClientException();
#endif /* CIT_H */
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