Use multiple network event loop threads with separate data structures.

bin/named/main.c

@@ -824,7 +824,7 @@ create_managers(void) {
 	}
 
 	result = isc_socketmgr_create2(named_g_mctx, &named_g_socketmgr,
-				       maxsocks);
+				       maxsocks, named_g_udpdisp);
 	if (result != ISC_R_SUCCESS) {
 		UNEXPECTED_ERROR(__FILE__, __LINE__,
 				 "isc_socketmgr_create() failed: %s",

lib/isc/include/isc/socket.h

@@ -813,7 +813,7 @@ isc_socketmgr_create(isc_mem_t *mctx, isc_socketmgr_t **managerp);
 
 isc_result_t
 isc_socketmgr_create2(isc_mem_t *mctx, isc_socketmgr_t **managerp,
-		      unsigned int maxsocks);
+		      unsigned int maxsocks, int nthreads);
 /*%<
  * Create a socket manager.  If "maxsocks" is non-zero, it specifies the
  * maximum number of sockets that the created manager should handle.