Advanced Queuing - Oracle

OCIAttrSet((dvoid *)svchp, (ub4)OCI_HTYPE_SVCCTX,
(dvoid *)usrhp, (ub4)0, OCI_ATTR_SESSION, errhp);
/* allocate the dequeue options descriptor */
checkerr(errhp, OCIDescriptorAlloc(envhp, (dvoid **)&deqopt,
OCI_DTYPE_AQDEQ_OPTIONS, 0, (dvoid **)0));
do {
deqmesg(buf, &buflen);
printf("%.*s\n", buflen, buf);
} while(1);
AQ and Memory Usage
/*
* This program never reaches this point as the dequeue timesout & exits.
* If it does reach here, it will be a good place to free the dequeue
* options descriptor using OCIDescriptorFree and free the memory allocated
* by OCI for the payload using OCIObjectFree
*/
} /* end main */
static void checkerr(errhp, status)
LNOCIError *errhp;
sword status;
{
text errbuf[512];
ub4 buflen;
sb4 errcode;
if (status == OCI_SUCCESS) return;
switch (status)
{
case OCI_ERROR:
OCIErrorGet ((dvoid *) errhp, (ub4) 1, (text *) NULL, &errcode,
errbuf, (ub4) sizeof(errbuf), (ub4) OCI_HTYPE_ERROR);
printf("Error - %s\n", errbuf);
break;
case OCI_INVALID_HANDLE:
printf("Error - OCI_INVALID_HANDLE\n");
break;
default:
printf("Error - %d\n", status);
break;
}
exit(-1);
Oracle Advanced Queuing by Example A-87