int
ACE_Bounded_Cached_Connect_Strategy<SVC_HANDLER, ACE_PEER_CONNECTOR_2, CACHING_STRATEGY, ATTRIBUTES, MUTEX>::find_or_create_svc_handler_i
(SVC_HANDLER *&sh,
const ACE_PEER_CONNECTOR_ADDR &remote_addr,
ACE_Time_Value *timeout,
const ACE_PEER_CONNECTOR_ADDR &local_addr,
bool reuse_addr,
int flags,
int perms,
ACE_Hash_Map_Entry<ACE_Refcounted_Hash_Recyclable<ACE_PEER_CONNECTOR_ADDR>,
std::pair<SVC_HANDLER *, ATTRIBUTES> > *&entry,
int &found)
{
REFCOUNTED_HASH_RECYCLABLE_ADDRESS search_addr (remote_addr);
// Try to find the address in the cache. Only if we don't find it
// do we create a new <SVC_HANDLER> and connect it with the server.
while (this->find (search_addr, entry) != -1)
{
// We found a cached svc_handler.
// Get the cached <svc_handler>
sh = entry->int_id_.first ();
// Is the connection clean?
int state_result= ACE::handle_ready (sh->peer ().get_handle (),
&ACE_Time_Value::zero,
1, // read ready
0, // write ready
1);// exception ready
if (state_result == 1)
{
// The connection was disconnected during idle.
// close the svc_handler down.
if (sh->close () == -1)
{
ACE_ASSERT (0);
return -1;
}
sh = 0;
// and rotate once more...
}
else if ((state_result == -1) && (errno == ETIME))
{
// Found!!!
// Set the flag
found = 1;
// Tell the <svc_handler> that it should prepare itself for
// being recycled.
if (this->prepare_for_recycling (sh) == -1)
{
ACE_ASSERT (0);
return -1;
}
return 0;
}
else // some other return value or error...
{
ACE_ASSERT (0); // just to see it coming
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("(%t)ACE_Bounded_Cached_Connect_Strategy<>::")
ACE_TEXT ("find_or_create_svc_handler_i - ")
ACE_TEXT ("error polling server socket state.\n")));
return -1;
}
}
// Not found...
// Set the flag
found = 0;
// Check the limit of handlers...
if ((this->max_size_ > 0) &&
(this->connection_cache_.current_size () >= this->max_size_))
{
// Try to purge idle connections
if (this->purge_connections () == -1)
return -1;
// Check limit again.
if (this->connection_cache_.current_size () >= this->max_size_)
// still too much!
return -1;
// OK, we have room now...
}
// We need to use a temporary variable here since we are not
// allowed to change <sh> because other threads may use this
// when we let go of the lock during the OS level connect.
//
// Note that making a new svc_handler, connecting remotely,
// binding to the map, and assigning of the hint and recycler
// should be atomic to the outside world.
SVC_HANDLER *potential_handler = 0;
// Create a new svc_handler
if (this->make_svc_handler (potential_handler) == -1)
return -1;
// Connect using the svc_handler.
if (this->cached_connect (potential_handler,
remote_addr,
timeout,
local_addr,
reuse_addr,
flags,
perms) == -1)
{
// Close the svc handler.
potential_handler->close (0);
return -1;
}
else
{
// Insert the new SVC_HANDLER instance into the cache.
if (this->connection_cache_.bind (search_addr,
potential_handler,
entry) == -1)
{
// Close the svc handler and reset <sh>.
potential_handler->close (0);
return -1;
}
// Everything succeeded as planned. Assign <sh> to
// <potential_handler>.
sh = potential_handler;
// Set the recycler and the recycling act
this->assign_recycler (sh, this, entry);
}
return 0;
}
void process_serial_nw_ctrl_pkt(GatewayToNodeSerial_Packet *pkt) // CHECKED SO
{
if(DEBUG_SR == 1)
{
nrk_kprintf(PSTR("SR: process_serial_nw_ctrl_pkt(): Received a network control packet of type = \r\n"));
printf("%x\r\n", pkt -> type);
}
switch(pkt -> type)
{
case SERIAL_ROUTE_REPLY:
unpack_Msg_RouteReply(&mrr, pkt -> data);
if(DEBUG_SR == 0)
{
nrk_kprintf(PSTR("SR: RX SERIAL_ROUTE_REPLY: "));
printf("%u\r\n", mrr.seq_no);
}
mrr.dg = NODE_ADDR; // fill up the default gateway in any case
process_Msg_RouteReply(&mrr); // look whether this message contains my address
// and update routing tables accordingly
// in any case send this packet into the network
set_nw_pkt_header(&nw_pkt, NODE_ADDR, BCAST_ADDR, BCAST_ADDR, NODE_ADDR, NODE_ADDR, MAX_NETWORK_DIAMETER, ROUTE_REPLY, SIZE_MSG_ROUTE_REPLY, NORMAL_PRIORITY);
// FIX ME, should nextHop = INVALID_ADDR?
pack_Msg_RouteReply(nw_pkt.data, &mrr);
send_nw_pkt_blocking(&nw_pkt);
break;
case SERIAL_SEND_NW_INFO:
unpack_Msg_SendNwInfo(&msnwi, pkt -> data); // unpack the message from the GatewayToNodeSerial_Packet packet
if(DEBUG_SR == 0)
{
nrk_kprintf(PSTR("SR: RX SERIAL_SEND_NW_INFO: "));
printf("%u\r\n", msnwi.seq_no);
}
msnwi.dg = NODE_ADDR; // fill up the default gateway address in any case
// Check if the gateway is requesting for my NGB_LIST information
if(search_addr(NODE_ADDR, msnwi.addrs, MAX_SUBNET_SIZE) == TRUE)
set_continue_sending_ngblist(1);
// create a network layer packet to disseminate this information
// the function route_addr() will return the correct 'nextHop' address regardless of whether
// msnwi.addr equals BCAST_ADDR or some other node's address. Again it does not matter if the
// gateway knows the route to msnwi.addr or not.
//set_nw_pkt_header(&nw_pkt, NODE_ADDR, msnwi.addr, route_addr(msnwi.addr), NODE_ADDR, NODE_ADDR, MAX_NETWORK_DIAMETER, SEND_NW_INFO, SIZE_MSG_SEND_NW_INFO, NORMAL_PRIORITY);
set_nw_pkt_header(&nw_pkt, NODE_ADDR, BCAST_ADDR, BCAST_ADDR, NODE_ADDR, NODE_ADDR, MAX_NETWORK_DIAMETER, SEND_NW_INFO, SIZE_MSG_SEND_NW_INFO, NORMAL_PRIORITY);
pack_Msg_SendNwInfo(nw_pkt.data, &msnwi);
send_nw_pkt_blocking(&nw_pkt);
break;
case SERIAL_NW_INFO_ACQUIRED:
unpack_Msg_NwInfoAcquired(&mnwia, pkt -> data); // unpack the message from the GatewayToNodeSerial_Packet packet
if(DEBUG_SR == 0)
{
nrk_kprintf(PSTR("SR: RX SERIAL_NW_INFO_ACQUIRED: "));
printf("%u\r\n", mnwia.seq_no);
}
mnwia.dg = NODE_ADDR; // fill up the default gateway address in any case
// the gateway has obtained my NGB_LIST information
if(search_addr(NODE_ADDR, mnwia.addrs, MAX_SUBNET_SIZE) == TRUE)
set_continue_sending_ngblist(0);
// create a network layer packet to disseminate this information
set_nw_pkt_header(&nw_pkt, NODE_ADDR, BCAST_ADDR, BCAST_ADDR, NODE_ADDR, NODE_ADDR, MAX_NETWORK_DIAMETER, NW_INFO_ACQUIRED, SIZE_MSG_NW_INFO_ACQUIRED, NORMAL_PRIORITY);
pack_Msg_NwInfoAcquired(nw_pkt.data, &mnwia);
send_nw_pkt_blocking(&nw_pkt);
break;
case SERIAL_SEND_NODE_INFO:
unpack_Msg_SendNodeInfo(&msni, pkt -> data); // unpack the message from the GatewayToNodeSerial_Packet packet
if(DEBUG_SR == 0)
{
nrk_kprintf(PSTR("SR: RX SERIAL_SEND_NODE_INFO: "));
printf("%u\r\n", msni.seq_no);
}
msni.dg = NODE_ADDR; // fill up the default gateway address in any case
// Does the gateway wants my NODE_INFO information?
if(search_addr(NODE_ADDR, msni.addrs, MAX_SUBNET_SIZE) == TRUE)
set_continue_sending_nodeinfo(1);
// create a network layer packet to disseminate this information
// this packet is broadcast into the network
set_nw_pkt_header(&nw_pkt, NODE_ADDR, BCAST_ADDR, BCAST_ADDR, NODE_ADDR, NODE_ADDR, MAX_NETWORK_DIAMETER, SEND_NODE_INFO, SIZE_MSG_SEND_NODE_INFO, NORMAL_PRIORITY);
pack_Msg_SendNodeInfo(nw_pkt.data, &msni);
send_nw_pkt_blocking(&nw_pkt);
break;
case SERIAL_NODE_INFO_ACQUIRED:
unpack_Msg_NodeInfoAcquired(&mnia, pkt -> data); // unpack the message from the GatewayToNodeSerial_Packet packet
if(DEBUG_SR == 0)
{
nrk_kprintf(PSTR("SR: RX SERIAL_NODE_INFO_ACQUIRED: "));
printf("%u\r\n", mnia.seq_no);
}
mnia.dg = NODE_ADDR; // fill up the default gateway address in any case
// Has the gateway has obtained my NODE_INFO information?
if(search_addr(NODE_ADDR, mnia.addrs, MAX_SUBNET_SIZE) == TRUE)
set_continue_sending_nodeinfo(0);
// create a network layer packet to disseminate this information
set_nw_pkt_header(&nw_pkt, NODE_ADDR, BCAST_ADDR, BCAST_ADDR, NODE_ADDR, NODE_ADDR, MAX_NETWORK_DIAMETER, NODE_INFO_ACQUIRED, SIZE_MSG_NODE_INFO_ACQUIRED, NORMAL_PRIORITY);
pack_Msg_NodeInfoAcquired(nw_pkt.data, &mnia);
send_nw_pkt_blocking(&nw_pkt);
break;
default:
while(1)
nrk_kprintf(PSTR("SR: process_serial_nw_ctrl_pkt(): Invalid nw_ctrl packet received: ERROR\r\n"));
} // end switch()
return;
}
template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1, class CACHING_STRATEGY, class ATTRIBUTES, class MUTEX> int
ACE_Cached_Connect_Strategy_Ex<SVC_HANDLER, ACE_PEER_CONNECTOR_2, CACHING_STRATEGY, ATTRIBUTES, MUTEX>::find_or_create_svc_handler_i
(SVC_HANDLER *&sh,
const ACE_PEER_CONNECTOR_ADDR &remote_addr,
ACE_Time_Value *timeout,
const ACE_PEER_CONNECTOR_ADDR &local_addr,
bool reuse_addr,
int flags,
int perms,
ACE_Hash_Map_Entry<ACE_Refcounted_Hash_Recyclable<ACE_PEER_CONNECTOR_ADDR>, std::pair<SVC_HANDLER *, ATTRIBUTES> > *&entry,
int &found)
{
REFCOUNTED_HASH_RECYCLABLE_ADDRESS search_addr (remote_addr);
// Try to find the address in the cache. Only if we don't find it
// do we create a new <SVC_HANDLER> and connect it with the server.
while (this->find (search_addr, entry) != -1)
{
// We found a cached svc_handler.
// Get the cached <svc_handler>
sh = entry->int_id_.first;
// Is the connection clean?
int state_result =
ACE::handle_ready (sh->peer ().get_handle (),
&ACE_Time_Value::zero,
1, // read ready
0, // write ready
1);// exception ready
if (state_result == 1)
{
if (sh->close () == -1)
return -1;
sh = 0;
// Cycle it once again..
}
else if ((state_result == -1) && (errno == ETIME))
{
// Found!!!
// Set the flag
found = 1;
// Tell the <svc_handler> that it should prepare itself for
// being recycled.
if (this->prepare_for_recycling (sh) == -1)
return -1;
return 0;
}
else
{
return -1;
}
}
// Not found...
// Set the flag
found = 0;
// We need to use a temporary variable here since we are not
// allowed to change <sh> because other threads may use this
// when we let go of the lock during the OS level connect.
//
// Note that making a new svc_handler, connecting remotely,
// binding to the map, and assigning of the hint and recycler
// should be atomic to the outside world.
SVC_HANDLER *potential_handler = 0;
// Create a new svc_handler
if (this->make_svc_handler (potential_handler) == -1)
return -1;
// Connect using the svc_handler.
if (this->cached_connect (potential_handler,
remote_addr,
timeout,
local_addr,
reuse_addr,
flags,
perms) == -1)
{
// Close the svc handler.
potential_handler->close (0);
return -1;
}
else
{
// Insert the new SVC_HANDLER instance into the cache.
if (this->connection_cache_.bind (search_addr,
potential_handler,
entry) == -1)
{
// Close the svc handler and reset <sh>.
potential_handler->close (0);
return -1;
}
// Everything succeeded as planned. Assign <sh> to
// <potential_handler>.
sh = potential_handler;
// Set the recycler and the recycling act
this->assign_recycler (sh, this, entry);
}
return 0;
}
template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1, class MUTEX> int
ACE_Cached_Connect_Strategy<SVC_HANDLER, ACE_PEER_CONNECTOR_2, MUTEX>::find_or_create_svc_handler_i
(SVC_HANDLER *&sh,
const ACE_PEER_CONNECTOR_ADDR &remote_addr,
ACE_Time_Value *timeout,
const ACE_PEER_CONNECTOR_ADDR &local_addr,
int reuse_addr,
int flags,
int perms,
CONNECTION_MAP_ENTRY *&entry,
int &found)
{
// Explicit type conversion
REFCOUNTED_HASH_RECYCLABLE_ADDRESS search_addr (remote_addr);
// Try to find the address in the cache. Only if we don't find it
// do we create a new <SVC_HANDLER> and connect it with the server.
if (this->find (search_addr, entry) == -1)
{
// Set the flag
found = 0;
// We need to use a temporary variable here since we are not
// allowed to change <sh> because other threads may use this
// when we let go of the lock during the OS level connect.
//
// Note that making a new svc_handler, connecting remotely,
// binding to the map, and assigning of the hint and recycler
// should be atomic to the outside world.
SVC_HANDLER *potential_handler = 0;
// Create a new svc_handler
if (this->make_svc_handler (potential_handler) == -1)
return -1;
// Actively establish the connection. This is a timed blocking
// connect.
if (this->new_connection (potential_handler,
remote_addr,
timeout,
local_addr,
reuse_addr,
flags,
perms) == -1)
{
// If connect() failed because of timeouts, we have to
// reject the connection entirely. This is necessary since
// currently there is no way for the non-blocking connects
// to complete and for the <Connector> to notify the cache
// of the completion of connect().
if (errno == EWOULDBLOCK)
errno = ENOTSUP;
// Close the svc handler.
potential_handler->close (0);
return -1;
}
else
{
// Insert the new SVC_HANDLER instance into the cache.
if (this->connection_map_.bind (search_addr,
potential_handler,
entry) == -1)
{
// Close the svc handler.
potential_handler->close (CLOSE_DURING_NEW_CONNECTION);
return -1;
}
// Everything succeeded as planned. Assign <sh> to <potential_handler>.
sh = potential_handler;
// Set the recycler and the recycling act
this->assign_recycler (sh, this, entry);
}
}
else
// We found a cached svc_handler.
{
// Set the flag
found = 1;
// Get the cached <svc_handler>
sh = entry->int_id_;
// Tell the <svc_handler> that it should prepare itself for
// being recycled.
this->prepare_for_recycling (sh);
}
return 0;
}
