Are you using 1.3.0?
In my code it says:
/* If we don't have any current events, then suspend if we are
supposed to */
if (!nready) {
if (timeout && timeout->tv_sec == 0 && timeout->tv_usec == 0) {
sys_sem_signal(selectsem);
if (readset)
FD_ZERO(readset);
if (writeset)
FD_ZERO(writeset);
if (exceptset)
FD_ZERO(exceptset);
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_select: no timeout,
returning 0\n"));
set_errno(0);
return 0;
}
On Oct 6, 2008, at 11:57 AM, Chu, Zhenwei wrote:
Hi,
It seems that lwIP_select() always block even if timeout is set to 0.
The call stack shows it stops at
sys_sem_wait(sem); (line 316: sys.c)
sys_sem_wait_timeout();
Any suggestions?
Thanks
Zhenwei Chu
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