diff options
Diffstat (limited to 'TAO/orbsvcs/orbsvcs/PortableGroup/UIPMC_Connection_Handler.cpp')
-rw-r--r-- | TAO/orbsvcs/orbsvcs/PortableGroup/UIPMC_Connection_Handler.cpp | 290 |
1 files changed, 290 insertions, 0 deletions
diff --git a/TAO/orbsvcs/orbsvcs/PortableGroup/UIPMC_Connection_Handler.cpp b/TAO/orbsvcs/orbsvcs/PortableGroup/UIPMC_Connection_Handler.cpp new file mode 100644 index 00000000000..d01a0248fbd --- /dev/null +++ b/TAO/orbsvcs/orbsvcs/PortableGroup/UIPMC_Connection_Handler.cpp @@ -0,0 +1,290 @@ +// This may look like C, but it's really -*- C++ -*- +// +// $Id$ + + +#include "orbsvcs/PortableGroup/UIPMC_Connection_Handler.h" +#include "orbsvcs/PortableGroup/UIPMC_Transport.h" +#include "orbsvcs/PortableGroup/UIPMC_Endpoint.h" + +#include "tao/Timeprobe.h" +#include "tao/debug.h" +#include "tao/ORB_Core.h" +#include "tao/ORB.h" +#include "tao/CDR.h" +#include "tao/Server_Strategy_Factory.h" +#include "tao/Transport_Cache_Manager.h" +#include "tao/Thread_Lane_Resources.h" +#include "tao/Base_Transport_Property.h" +#include "tao/Resume_Handle.h" + + +ACE_RCSID(PortableGroup, + UIPMC_Connection_Handler, + "$Id$") + +TAO_BEGIN_VERSIONED_NAMESPACE_DECL + +TAO_UIPMC_Connection_Handler::TAO_UIPMC_Connection_Handler (ACE_Thread_Manager *t) + : TAO_UIPMC_SVC_HANDLER (t, 0 , 0), + TAO_Connection_Handler (0), + udp_socket_ (ACE_sap_any_cast (ACE_INET_Addr &)), + mcast_socket_ (), + using_mcast_ (0) +{ + // This constructor should *never* get called, it is just here to + // make the compiler happy: the default implementation of the + // Creation_Strategy requires a constructor with that signature, we + // don't use that implementation, but some (most?) compilers + // instantiate it anyway. + ACE_ASSERT (0); +} + + +TAO_UIPMC_Connection_Handler::TAO_UIPMC_Connection_Handler (TAO_ORB_Core *orb_core) + : TAO_UIPMC_SVC_HANDLER (orb_core->thr_mgr (), 0, 0), + TAO_Connection_Handler (orb_core), + udp_socket_ (ACE_sap_any_cast (ACE_INET_Addr &)), + mcast_socket_ (), + using_mcast_ (0) +{ + TAO_UIPMC_Transport* specific_transport = 0; + ACE_NEW(specific_transport, + TAO_UIPMC_Transport(this, orb_core, 0)); + + // store this pointer (indirectly increment ref count) + this->transport (specific_transport); +} + + +TAO_UIPMC_Connection_Handler::~TAO_UIPMC_Connection_Handler (void) +{ + if (this->using_mcast_) + { + // Closing a multicast socket automatically unsubscribes us from + // the multicast group. + this->mcast_socket_.close (); + } + else + this->udp_socket_.close (); + + delete this->transport (); + int const result = + this->release_os_resources (); + + if (result == -1 && TAO_debug_level) + { + ACE_ERROR ((LM_ERROR, + ACE_TEXT("TAO (%P|%t) - UMPIC_Connection_Handler::") + ACE_TEXT("~UMPIC_Connection_Handler, ") + ACE_TEXT("release_os_resources() failed %m\n"))); + } +} + +ACE_HANDLE +TAO_UIPMC_Connection_Handler::get_handle (void) const +{ + if (this->using_mcast_) + return this->mcast_socket_.get_handle (); + else + return this->udp_socket_.get_handle (); +} + +const ACE_INET_Addr & +TAO_UIPMC_Connection_Handler::addr (void) +{ + return this->addr_; +} + + +void +TAO_UIPMC_Connection_Handler::addr (const ACE_INET_Addr &addr) +{ + this->addr_ = addr; +} + + +const ACE_INET_Addr & +TAO_UIPMC_Connection_Handler::local_addr (void) +{ + return local_addr_; +} + + +void +TAO_UIPMC_Connection_Handler::local_addr (const ACE_INET_Addr &addr) +{ + local_addr_ = addr; +} + + +const ACE_SOCK_Dgram & +TAO_UIPMC_Connection_Handler::dgram (void) +{ + return this->udp_socket_; +} + +const ACE_SOCK_Dgram_Mcast & +TAO_UIPMC_Connection_Handler::mcast_dgram (void) +{ + return this->mcast_socket_; +} + + +int +TAO_UIPMC_Connection_Handler::open_handler (void *v) +{ + return this->open (v); +} + +int +TAO_UIPMC_Connection_Handler::open (void*) +{ + this->udp_socket_.open (this->local_addr_); + + if(TAO_debug_level > 5) + { + ACE_DEBUG ((LM_DEBUG, + ACE_TEXT("TAO (%P|%t) TAO_UIPMC_Connection_Handler::open, ") + ACE_TEXT("listening on: <%s:%u>\n"), + this->local_addr_.get_host_addr (), + this->local_addr_.get_port_number ())); + } + + this->using_mcast_ = 0; + + // Set that the transport is now connected, if fails we return -1 + // Use C-style cast b/c otherwise we get warnings on lots of + // compilers + if (!this->transport ()->post_open ((size_t) this->udp_socket_.get_handle ())) + return -1; + + return 0; +} + +int +TAO_UIPMC_Connection_Handler::open_server (void) +{ + this->mcast_socket_.join (this->local_addr_); + if( TAO_debug_level > 5) + { + ACE_DEBUG ((LM_DEBUG, + ACE_TEXT("TAO (%P|%t) TAO_UIPMC_Connection_Handler::open_server, ") + ACE_TEXT("subcribed to multicast group at %s:%d\n"), + this->local_addr_.get_host_addr (), + this->local_addr_.get_port_number () + )); + } + + this->transport ()->id ((size_t) this->mcast_socket_.get_handle ()); + this->using_mcast_ = 1; + + return 0; +} + +int +TAO_UIPMC_Connection_Handler::resume_handler (void) +{ + return ACE_Event_Handler::ACE_APPLICATION_RESUMES_HANDLER; +} + +int +TAO_UIPMC_Connection_Handler::close_connection (void) +{ + return this->close_connection_eh (this); +} + +int +TAO_UIPMC_Connection_Handler::handle_input (ACE_HANDLE h) +{ + return this->handle_input_eh (h, this); +} + +int +TAO_UIPMC_Connection_Handler::handle_output (ACE_HANDLE handle) +{ + int result = + this->handle_output_eh (handle, this); + + if (result == -1) + { + this->close_connection (); + return 0; + } + + return result; +} + +int +TAO_UIPMC_Connection_Handler::handle_timeout (const ACE_Time_Value &, + const void *) +{ + // Using this to ensure this instance will be deleted (if necessary) + // only after reset_state(). Without this, when this refcount==1 - + // the call to close() will cause a call to remove_reference() which + // will delete this. At that point this->reset_state() is in no + // man's territory and that causes SEGV on some platforms (Windows!) + + TAO_Auto_Reference<TAO_UIPMC_Connection_Handler> safeguard (*this); + + // NOTE: Perhaps not the best solution, as it feels like the upper + // layers should be responsible for this? + + // We don't use this upcall for I/O. This is only used by the + // Connector to indicate that the connection timedout. Therefore, + // we should call close(). + int ret = this->close (); + this->reset_state (TAO_LF_Event::LFS_TIMEOUT); + return ret; +} + +int +TAO_UIPMC_Connection_Handler::handle_close (ACE_HANDLE, + ACE_Reactor_Mask) +{ + // No asserts here since the handler is registered with the Reactor + // and the handler ownership is given to the Reactor. When the + // Reactor closes, it will call handle_close() on the handler. It + // is however important to overwrite handle_close() to do nothing + // since the base class does too much. + return 0; +} + +int +TAO_UIPMC_Connection_Handler::close (u_long) +{ + this->state_changed (TAO_LF_Event::LFS_CONNECTION_CLOSED, + this->orb_core ()->leader_follower ()); + this->transport ()->remove_reference (); + return 0; +} + +int +TAO_UIPMC_Connection_Handler::release_os_resources (void) +{ + return this->peer().close (); +} + +int +TAO_UIPMC_Connection_Handler::add_transport_to_cache (void) +{ + ACE_INET_Addr addr; + + // This function is called by the acceptor to add this + // transport to the transport cache. This is really + // important for proper shutdown. The address used + // is irrelevent, since UIPMC is connectionless. + + // Construct a UIPMC_Endpoint object. + TAO_UIPMC_Endpoint endpoint (addr); + + // Construct a property object + TAO_Base_Transport_Property prop (&endpoint); + + // Add the handler to Cache + return this->orb_core ()->lane_resources () + .transport_cache ().cache_transport (&prop, + this->transport ()); +} + +TAO_END_VERSIONED_NAMESPACE_DECL |