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Subjectselect() stress

Hello,

I'm running some code ported from an sgi running Irix 6.5 on a
redhat 7.1 box: 2.4.7-10, i686. Control hangs on a select()
statement forever. The select is never completed, so I can't
check errno.

Please reply to me personally as I'm not currently subscribed:
jamie.sparks@cubic.com

on sgi, the call is:

select(getdtablehi(), &socklist, NULL, NULL, NULL);

where socklist is declared as: FD_SET socklist;

on linux, there is no getdtablehi() equivalent, so I use
getdtablesize() in its place. getdtablehi() returns the
number of fd's currently open and getdtablesize() returns
the number of fd's that *can* be open.

here's the code:

for (;;)
{
printf("CLEARING sockets\n");
FD_ZERO(&socklist); /* Always clear the structure first. */
FD_SET(Sockfd[0], &socklist);
FD_SET(Sockfd[1], &socklist);

int len = -1;
bool wasDequeued =false;
if (!StateManager::getSaveInProgress()&& StateManager::hasQueuedPdus())
{
FD_ZERO(&socklist); /* Always clear the structure first. */
pdu = StateManager::dequeuePostPduProcess();
len = sizeof(pdu);
wasDequeued = true;
printf("PDU DEqueued from StateManager since Save has completed\n");
}
else
{
printf("prior to select\n");
// orig sgi if (select(getdtablehi(), &socklist, NULL, NULL, NULL) < 0)

/* ****************************** */
/* THIS select() STATEMENT NEVER COMPLETES */
/* ****************************** */
if (select(getdtablesize(), &socklist, NULL, NULL, NULL) < 0)
{
if (errno != EINTR) perror("WeapTerrain");
continue;
}

printf("after select\n");
}
printf("Prior to finding which socket\n");

for (ii=0;ii<2;ii++)
{
len = -1;
if (FD_ISSET(Sockfd[ii],&socklist))
{
if (!ii)
{
len = waitForSocketMessage(Sockfd[ii],&pdu,
sizeof(pdu));
} else if (ii)
{
len = 0;
}
}

if (wasDequeued){len = sizeof(pdu);wasDequeued=false;}

if (len == sizeof(pdu) && StateManager::getSaveInProgress())
{
StateManager::queuePostPduProcess(pdu);
printf("incoming PDU queued in StateManager since SaveInProgress\n");
continue;
}

if (len >= 0)
{
printf("LEN?TYPE = %d %d\n",len, pdu.dpdu.detonation_header.type);
}

.
.
.

Please reply to me personally as I'm not currently subscribed:
jamie.sparks@cubic.com

thanks,

Jamie
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