On Thu, 11 Sep 2014 11:58:34 +0800 xinyilong wrote: X> Dear all, X> I have met a stack overflow in select(), because there are more than 1024 X> fds in my app. I found some large fd APIs in net-snmp 5.7.2, but I did not X> find how to use those APIs, expecially in the agent_check_and_process() as X> below. X> X> How to use those APIs in the snmp_synch_response_cb as below, I think those X> APIs do not work well with select
You should use the macros defined in large_fd_set.h: /** * Add socket fd to the set *fdset if not yet present. * Enlarges the set if necessary. */ #define NETSNMP_LARGE_FD_SET(fd, fdset) /** * Remove socket fd from the set *fdset. * Do nothing if fd is not present in *fdset. * Do nothing if fd >= fdset->lfs_setsize. */ #define NETSNMP_LARGE_FD_CLR(fd, fdset) /** * Test whether set *fdset contains socket fd. * Evaluates to zero (false) if fd >= fdset->lfs_setsize. */ #define NETSNMP_LARGE_FD_ISSET(fd, fdset) #if !defined(cygwin) && defined(HAVE_WINSOCK_H) /** * Number of bytes needed to store a number of file descriptors as a * struct fd_set. */ #define NETSNMP_FD_SET_BYTES(setsize) /** Remove all sockets from the set *fdset. */ #define NETSNMP_LARGE_FD_ZERO If the agent is crashing on the select in snmp_synch_response_cb, try chaning it to netsnmp_large_fd_set_select(...) and let us know if that fixes the problem (by filing a bug report, along with your OS and net-snmp versions). Robert ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk _______________________________________________ Net-snmp-coders mailing list Net-snmp-coders@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/net-snmp-coders
