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# TAO_Stub Class Reference

TAO_Stub. More...

`#include <Stub.h>`

Collaboration diagram for TAO_Stub:

[legend]
List of all members.

## Public Methods

virtual CORBA::Policy_ptr | get_policy (CORBA::PolicyType type ACE_ENV_ARG_DECL_WITH_DEFAULTS)
virtual CORBA::Policy_ptr | get_client_policy (CORBA::PolicyType type ACE_ENV_ARG_DECL_WITH_DEFAULTS)
virtual TAO_Stub * | set_policy_overrides (const CORBA::PolicyList &policies, CORBA::SetOverrideType set_add ACE_ENV_ARG_DECL_WITH_DEFAULTS)
virtual CORBA::PolicyList * | get_policy_overrides (const CORBA::PolicyTypeSeq &types ACE_ENV_ARG_DECL_WITH_DEFAULTS)
CORBA::Policy_ptr | relative_roundtrip_timeout (void)
CORBA::Policy_ptr | sync_scope (void)
CORBA::Policy_ptr | buffering_constraint (void)
CORBA::Policy_ptr | connection_timeout (void)
TAO_Sync_Strategy & | sync_strategy (void)
CORBA::ULong | hash (CORBA::ULong maximum ACE_ENV_ARG_DECL_WITH_DEFAULTS)
CORBA::Boolean | is_equivalent (CORBA::Object_ptr other_obj)
| Implement the is_equivalent() method for the CORBA::Object.
| TAO_Stub (const char *repository_id, const TAO_MProfile &profiles, TAO_ORB_Core *orb_core)
| Construct from a repository ID and a list of profiles.
CORBA::ULong | _incr_refcnt (void)
CORBA::ULong | _decr_refcnt (void)
ACE_Lock * | profile_lock (void) const
TAO_Profile * | profile_in_use (void)
const TAO::ObjectKey & | object_key (void) const
| Return the ObjectKey.
TAO_MProfile * | make_profiles (void)
const TAO_MProfile & | base_profiles (void) const
| Obtain a reference to the basic profile set.
TAO_MProfile & | base_profiles (void)
| Obtain a reference to the basic profile set.
const TAO_MProfile * | forward_profiles (void) const
| Obtain a pointer to the forwarded profile set.
TAO_Profile * | next_profile (void)
TAO_Profile * | next_profile_i (void)
| NON-THREAD SAFE version of next_profile (void).
void | reset_profiles (void)
void | reset_profiles_i (void)
| NON-THREAD SAFE version of reset_profiles (void);.
CORBA::Boolean | valid_forward_profile (void)
void | set_valid_profile (void)
| NON-THREAD-SAFE. Will set profile_success_ to 0.
CORBA::Boolean | valid_profile (void)
TAO_Profile * | base_profiles (const TAO_MProfile &mprofiles)
void | add_forward_profiles (const TAO_MProfile &mprofiles)
CORBA::Boolean | next_profile_retry (void)
TAO_ORB_Core * | orb_core (void) const
| Accessor.
CORBA::ORB_ptr | servant_orb_ptr (void)
| This returns a duplicated ORB pointer.
CORBA::ORB_var & | servant_orb_var (void)
| This returns the ORB var itself (generally for temporary use).
void | servant_orb (CORBA::ORB_ptr orb)
CORBA::Boolean | service_profile_selection (void)
int | create_ior_info (IOP::IOR *&ior_info, CORBA::ULong &index ACE_ENV_ARG_DECL) throw (CORBA::SystemException)
TAO_SYNCH_MUTEX & | refcount_lock (void)
| Return a reference to the reference count lock.
CORBA::ULong & | refcount (void)
| Return number of outstanding references to this object.
void | destroy (void)
| Deallocate the TAO_Stub object.
CORBA::Boolean | optimize_collocation_objects (void) const
| Return the cached value from the ORB_Core.

## Public Attributes

CORBA::String_var | type_id
| All objref representations carry around a type ID.

## Protected Methods

virtual | ~TAO_Stub (void)

## Protected Attributes

TAO_ORB_Core_Auto_Ptr | orb_core_
| Automatically manage the ORB_Core reference count.
CORBA::ORB_var | orb_
CORBA::ORB_var | servant_orb_
TAO_MProfile | base_profiles_
| Ordered list of profiles for this object.
TAO_MProfile * | forward_profiles_
TAO_Profile * | profile_in_use_
| This is the profile that we are currently sending/receiving with.
ACE_Lock * | profile_lock_ptr_
| Mutex to protect access to the forwarding profile.
size_t | profile_success_
| Have we successfully talked to the forward profile yet?
TAO_SYNCH_MUTEX | refcount_lock_
| Mutex to protect reference count.
CORBA::ULong | refcount_
| Number of outstanding references to this object.
TAO_Policy_Set * | policies_
IOP::IOR * | ior_info_
IOP::IOR * | forwarded_ior_info_
| Forwarded IOR info.
const CORBA::Boolean | collocation_opt_

## Private Methods

TAO_Profile * | set_profile_in_use_i (TAO_Profile *pfile)
void | reset_base ()
void | forward_back_one (void)
void | reset_forward ()
TAO_Profile * | next_forward_profile (void)
| NON-THREAD-SAFE. utility method for next_profile.
int | get_profile_ior_info (TAO_MProfile &profile, IOP::IOR *&ior_info ACE_ENV_ARG_DECL) throw (CORBA::SystemException)
| THREAD-SAFE Create the IOR info.
| TAO_Stub (const TAO_Stub &)
TAO_Stub & | operator= (const TAO_Stub &)

## Detailed Description

TAO_Stub.

Per-objref data includes the (protocol-specific) Profile, which is handled by placing it into a subclass of this type along with data that may be used in protocol-specific caching schemes. The type ID (the data specified by CORBA 2.0 that gets exposed "on the wire", and in stringified objrefs) is held by this module. The stub APIs are member functions of this type.

## Constructor & Destructor Documentation

TAO_Stub::TAO_Stub | ( | const char * | repository_id,
|  | const TAO_MProfile & | profiles,
|  | TAO_ORB_Core * | orb_core
| ) |

| Construct from a repository ID and a list of profiles.

TAO_Stub::~TAO_Stub | ( | void |  | ) | `[protected, virtual]`

| Destructor is to be called only through _decr_refcnt() to enforce proper reference counting.

TAO_Stub::TAO_Stub | ( | const TAO_Stub & |  | ) | `[private]`

## Member Function Documentation

CORBA::ULong TAO_Stub::_decr_refcnt | ( | void |  | ) |

CORBA::ULong TAO_Stub::_incr_refcnt | ( | void |  | ) |

void TAO_Stub::add_forward_profiles | ( | const TAO_MProfile & | mprofiles | ) |

| THREAD SAFE. Set the forward_profiles. This object will assume ownership of this TAO_MProfile object!!

ACE_INLINE TAO_Profile * TAO_Stub::base_profiles | ( | const TAO_MProfile & | mprofiles | ) |

| Initialize the base_profiles_ and set profile_in_use_ to reference the first profile.

ACE_INLINE TAO_MProfile & TAO_Stub::base_profiles | ( | void |  | ) |

| Obtain a reference to the basic profile set.

ACE_INLINE const TAO_MProfile & TAO_Stub::base_profiles | ( | void |  | ) | const

| Obtain a reference to the basic profile set.

CORBA::Policy_ptr TAO_Stub::buffering_constraint | ( | void |  | ) |

CORBA::Policy_ptr TAO_Stub::connection_timeout | ( | void |  | ) |

int TAO_Stub::create_ior_info | ( | IOP::IOR *& | ior_info,
|  | CORBA::ULong &index | ACE_ENV_ARG_DECL
| ) | throw (CORBA::SystemException)

| Create the IOP::IOR info. We will create the info at most once. Get the index of the profile we are using to make the invocation.

ACE_INLINE void TAO_Stub::destroy | ( | void |  | ) |

| Deallocate the TAO_Stub object. This method is intended to be used only by the CORBA::Object class.

void TAO_Stub::forward_back_one | ( | void |  | ) | `[private]`

| NON-THREAD-SAFE. Utility method which unrolls (removes or pops) the top most forwarding profile list.

ACE_INLINE const TAO_MProfile * TAO_Stub::forward_profiles | ( | void |  | ) | const

| Obtain a pointer to the forwarded profile set.

CORBA::Policy_ptr TAO_Stub::get_client_policy | ( | CORBA::PolicyType type | ACE_ENV_ARG_DECL_WITH_DEFAULTS | ) | `[virtual]`

CORBA::Policy_ptr TAO_Stub::get_policy | ( | CORBA::PolicyType type | ACE_ENV_ARG_DECL_WITH_DEFAULTS | ) | `[virtual]`

| Returns the effective policy if <type> is a known client-exposed policy type. Returns the effective override for all other policy types.

CORBA::PolicyList * TAO_Stub::get_policy_overrides | ( | const CORBA::PolicyTypeSeq &types | ACE_ENV_ARG_DECL_WITH_DEFAULTS | ) | `[virtual]`

int TAO_Stub::get_profile_ior_info | ( | TAO_MProfile & | profile,
|  | IOP::IOR *&ior_info | ACE_ENV_ARG_DECL
| ) | throw (CORBA::SystemException)`[private]`

| THREAD-SAFE Create the IOR info.

CORBA::ULong TAO_Stub::hash | ( | CORBA::ULong maximum | ACE_ENV_ARG_DECL_WITH_DEFAULTS | ) |

| All objref representations know how to hash themselves and compare themselves for equivalence to others. It's easily possible to have two objrefs that are distinct copies of data that refers/points to the same remote object (i.e. are equivalent).

CORBA::Boolean TAO_Stub::is_equivalent | ( | CORBA::Object_ptr | other_obj | ) |

| Implement the is_equivalent() method for the CORBA::Object.

ACE_INLINE TAO_MProfile * TAO_Stub::make_profiles | ( | void |  | ) |

| Copy of the profile list, user must free memory when done. although the user can call make_profiles() then reorder the list and give it back to TAO_Stub.

ACE_INLINE TAO_Profile * TAO_Stub::next_forward_profile | ( | void |  | ) | `[private]`

| NON-THREAD-SAFE. utility method for next_profile.

ACE_INLINE TAO_Profile * TAO_Stub::next_profile | ( | void |  | ) |

| THREAD SAFE. If forward_profiles is null then this will get the next profile in the base_profiles list. If forward is not null then this will get the next profile for the list of forwarding profiles. If all profiles have been tried then 0 is returned and profile_in_use_ is set to the first profile in the base_profiles list.

ACE_INLINE TAO_Profile * TAO_Stub::next_profile_i | ( | void |  | ) |

| NON-THREAD SAFE version of next_profile (void).

ACE_INLINE CORBA::Boolean TAO_Stub::next_profile_retry | ( | void |  | ) |

| THREAD SAFE Used to get the next profile after the one being used has failed during the initial connect or send of the message!

const TAO::ObjectKey & TAO_Stub::object_key | ( | void |  | ) | const

| Return the ObjectKey.

TAO_Stub& TAO_Stub::operator= | ( | const TAO_Stub & |  | ) | `[private]`

ACE_INLINE CORBA::Boolean TAO_Stub::optimize_collocation_objects | ( | void |  | ) | const

| Return the cached value from the ORB_Core. This flag indicates whether the stub code should make use of the collocation opportunities that are available to the ORB.

ACE_INLINE TAO_ORB_Core * TAO_Stub::orb_core | ( | void |  | ) | const

| Accessor.

ACE_INLINE TAO_Profile * TAO_Stub::profile_in_use | ( | void |  | ) |

| returns a pointer to the profile_in_use object. This object retains ownership of this profile.

ACE_INLINE ACE_Lock * TAO_Stub::profile_lock | ( | void |  | ) | const

| Return the Profile lock. This lock can be used at places where profiles need to be edited.

ACE_INLINE CORBA::ULong & TAO_Stub::refcount | ( | void |  | ) |

| Return number of outstanding references to this object. This method is meant to be used by the CORBA::Object implementation to allow it to directly manipulate the reference count.

ACE_INLINE TAO_SYNCH_MUTEX & TAO_Stub::refcount_lock | ( | void |  | ) |

| Return a reference to the reference count lock. This method is meant to be used by the CORBA::Object implementation to allow it to directly manipulate the reference count.

CORBA::Policy_ptr TAO_Stub::relative_roundtrip_timeout | ( | void |  | ) |

ACE_INLINE void TAO_Stub::reset_base | ( |  | ) | `[private]`

| NON-THREAD-SAFE. Utility method which resets or initializes the base_profile list and forward flags.

ACE_INLINE void TAO_Stub::reset_forward | ( |  | ) | `[private]`

| NOT THREAD-SAFE. Utility method which pops all forward profile lists and resets the forward_profiles_ pointer.

ACE_INLINE void TAO_Stub::reset_profiles | ( | void |  | ) |

| THREAD SAFE this method will reset the base profile list to reference the first profile and if there are anmy existing forward profiles they are reset.

ACE_INLINE void TAO_Stub::reset_profiles_i | ( | void |  | ) |

| NON-THREAD SAFE version of reset_profiles (void);.

ACE_INLINE void TAO_Stub::servant_orb | ( | CORBA::ORB_ptr | orb | ) |

| Accesor and mutator for the servant ORB. Notice that the muatator assumes the ownership of the passed in ORB and the accesor does not return a copy of the orb since the accessing of the ORB is considered temporary.

ACE_INLINE CORBA::ORB_ptr TAO_Stub::servant_orb_ptr | ( | void |  | ) |

| This returns a duplicated ORB pointer.

ACE_INLINE CORBA::ORB_var & TAO_Stub::servant_orb_var | ( | void |  | ) |

| This returns the ORB var itself (generally for temporary use).

CORBA::Boolean TAO_Stub::service_profile_selection | ( | void |  | ) |

Todo:
  Deprecated. Remove after TAO 1.2.1 is released.

TAO_Stub * TAO_Stub::set_policy_overrides | ( | const CORBA::PolicyList & | policies,
|  | CORBA::SetOverrideType set_add | ACE_ENV_ARG_DECL_WITH_DEFAULTS
| ) | `[virtual]`

TAO_Profile * TAO_Stub::set_profile_in_use_i | ( | TAO_Profile * | pfile | ) | `[private]`

| Makes a copy of the profile and frees the existing profile_in_use. NOT THREAD SAFE

ACE_INLINE void TAO_Stub::set_valid_profile | ( | void |  | ) |

| NON-THREAD-SAFE. Will set profile_success_ to 0.

CORBA::Policy_ptr TAO_Stub::sync_scope | ( | void |  | ) |

TAO_Sync_Strategy & TAO_Stub::sync_strategy | ( | void |  | ) |

| Return the sync strategy to be used in by the transport. Selection will be based on the SyncScope policies.

ACE_INLINE CORBA::Boolean TAO_Stub::valid_forward_profile | ( | void |  | ) |

| Returns 1 if a forward profile has successfully been used. profile_success_ && forward_profiles_

ACE_INLINE CORBA::Boolean TAO_Stub::valid_profile | ( | void |  | ) |

| Returns TRUE if a connection was successful with at least one profile.

## Member Data Documentation

TAO_MProfile TAO_Stub::base_profiles_`[protected]`

| Ordered list of profiles for this object.

const CORBA::Boolean TAO_Stub::collocation_opt_`[protected]`

| This should be the same value as cached in the ORB_Core. The reason for caching this helps our generated code, notably the stubs to be decoubled from ORB_Core. Please do not move it away.

TAO_MProfile* TAO_Stub::forward_profiles_`[protected]`

| The list of forwarding profiles. This is actually implemented as a linked list of TAO_MProfile objects.

IOP::IOR* TAO_Stub::forwarded_ior_info_`[protected]`

| Forwarded IOR info.

IOP::IOR* TAO_Stub::ior_info_`[protected]`

| The ior info. This is needed for GIOP 1.2, as the clients could receive an exception from the server asking for this info. The exception that the client receives is LOC_NEEDS_ADDRESSING_MODE. The data is set up here to be passed on to Invocation classes when they receive an exception. This info is for the base profiles that this class stores

CORBA::ORB_var TAO_Stub::orb_`[protected]`

Todo:
  Why do we need both a reference to the ORB_Core and its ORB? It think the memory management rules for the ORB_Core changed, in the good old days it was the CORBA::ORB class who owned the ORB_Core, now it is the other way around....

TAO_ORB_Core_Auto_Ptr TAO_Stub::orb_core_`[protected]`

| Automatically manage the ORB_Core reference count. The ORB_Core cannot go away until the object references it creates are destroyed. There are multiple reasons for this, but in particular, the allocators used for some of the TAO_Profile objects contained on each TAO_Stub are owned by the TAO_ORB_Core. This must be the first field of the class, otherwise the TAO_ORB_Core is destroyed too early!

TAO_Policy_Set* TAO_Stub::policies_`[protected]`

| The policy overrides in this object, if nil then use the default policies.

TAO_Profile* TAO_Stub::profile_in_use_`[protected]`

| This is the profile that we are currently sending/receiving with.

ACE_Lock* TAO_Stub::profile_lock_ptr_`[protected]`

| Mutex to protect access to the forwarding profile.

size_t TAO_Stub::profile_success_`[protected]`

| Have we successfully talked to the forward profile yet?

CORBA::ULong TAO_Stub::refcount_`[protected]`

| Number of outstanding references to this object.

TAO_SYNCH_MUTEX TAO_Stub::refcount_lock_`[protected]`

| Mutex to protect reference count.

CORBA::ORB_var TAO_Stub::servant_orb_`[protected]`

| If this stub refers to a collocated object then we need to hold on to the servant's ORB (which may be different from the client ORB) so that, 1. we know that the ORB will stay alive long enough, and, 2. we can search for the servant/POA's status starting from the ORB's RootPOA.

CORBA::String_var TAO_Stub::type_id

| All objref representations carry around a type ID.

The documentation for this class was generated from the following files:

- Stub.h
- Stub.cpp
- Stub.i