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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));
+}
+