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/*
* SCCS: @(#)cloop.c 1.6 (96/11/04)
*
* UniSoft Ltd., London, England
*
* (C) Copyright 1992 X/Open Company Limited
*
* All rights reserved. No part of this source code may be reproduced,
* stored in a retrieval system, or transmitted, in any form or by any
* means, electronic, mechanical, photocopying, recording or otherwise,
* except as stated in the end-user licence agreement, without the prior
* permission of the copyright owners.
*
* X/Open and the 'X' symbol are trademarks of X/Open Company Limited in
* the UK and other countries.
*/
#ifndef lint
static char sccsid[] = "@(#)cloop.c 1.6 (96/11/04) TET3 release 3.3";
#endif
/************************************************************************
SCCS: @(#)cloop.c 1.6 96/11/04 TETware release 3.3
NAME: cloop.c
PRODUCT: TETware
AUTHOR: Andrew Dingwall, UniSoft Ltd.
DATE CREATED: April 1992
DESCRIPTION:
function to manage a conversation with a client process
MODIFICATIONS:
************************************************************************/
#include <stdio.h>
#include <sys/types.h>
#include "dtmac.h"
#include "dtmsg.h"
#include "ptab.h"
#include "ltoa.h"
#include "error.h"
#include "dtetlib.h"
#ifdef NEEDsrcFile
static char srcFile[] = __FILE__; /* file name for error reporting */
#endif
/*
** tet_si_clientloop() - perform a simple client service loop iteration
** for a single process, waiting for it to complete
**
** if the i/o is non-blocking, an i/o operation times out after
** delay seconds
*/
void tet_si_clientloop(pp, delay)
register struct ptab *pp;
int delay;
{
register int done;
TRACE3(tet_Tloop, 2, "clientloop START %s, delay = %s",
tet_r2a(&pp->pt_rid), tet_i2a(delay));
pp->pt_state = PS_SNDMSG;
pp->pt_flags &= ~(PF_ATTENTION | PF_INPROGRESS | PF_IODONE | PF_IOERR);
done = 0;
while (!done) {
TRACE4(tet_Tloop, 4,
"%s clientloop TOP: state = %s, flags = %s",
tet_r2a(&pp->pt_rid), tet_ptstate(pp->pt_state),
tet_ptflags(pp->pt_flags));
tet_si_servwait(pp, delay);
if (pp->pt_flags & PF_IOERR) {
pp->pt_flags &= ~(PF_INPROGRESS | PF_IODONE);
done = 1;
continue;
}
switch (pp->pt_state) {
case PS_SNDMSG:
if (pp->pt_flags & PF_INPROGRESS)
break;
/* else fall through */
case PS_IDLE:
pp->pt_state = PS_RCVMSG;
pp->pt_flags &= ~PF_IODONE;
break;
case PS_RCVMSG:
if ((pp->pt_flags & PF_INPROGRESS) == 0)
pp->pt_state = PS_PROCESS;
break;
case PS_PROCESS:
done = 1;
continue;
case PS_DEAD:
tet_si_service(pp);
done = 1;
continue;
default:
error(0, tet_ptstate(pp->pt_state), "unexpected");
done = 1;
continue;
}
}
TRACE4(tet_Tloop, 2, "%s clientloop RETURN: state = %s, flags = %s",
tet_r2a(&pp->pt_rid), tet_ptstate(pp->pt_state),
tet_ptflags(pp->pt_flags));
}
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