#include <Stub.h>

Collaboration diagram for TAO_Stub:

Public Member Functions
virtual CORBA::Policy_ptr	get_policy (CORBA::PolicyType type)

virtual CORBA::Policy_ptr	get_cached_policy (TAO_Cached_Policy_Type type)

virtual TAO_Stub *	set_policy_overrides (const CORBA::PolicyList &policies, CORBA::SetOverrideType set_add)

virtual CORBA::PolicyList *	get_policy_overrides (const CORBA::PolicyTypeSeq &types)

TAO::Transport_Queueing_Strategy *	transport_queueing_strategy (void)

CORBA::ULong	hash (CORBA::ULong maximum)

CORBA::Boolean	is_equivalent (CORBA::Object_ptr other_obj)
	Implement the is_equivalent() method for the CORBA::Object. More...

	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. More...

void	_incr_refcnt (void)

void	_decr_refcnt (void)

const TAO_SYNCH_MUTEX &	profile_lock (void) const

TAO_Profile *	profile_in_use (void)

const TAO::ObjectKey &	object_key (void) const
	Return the ObjectKey. More...

TAO_MProfile *	make_profiles (void)

const TAO_MProfile &	base_profiles (void) const
	Obtain a reference to the basic profile set. More...

TAO_MProfile &	base_profiles (void)
	Obtain a reference to the basic profile set. More...

const TAO_MProfile *	forward_profiles (void) const
	Obtain a pointer to the forwarded profile set. More...

TAO_MProfile *	forward_profiles (void)
	Obtain a pointer to the forwarded profile set. More...

TAO_Profile *	next_profile (void)
	True if permanent location forward occured, in this case the lock must be set and the. More...

void	reset_profiles (void)

CORBA::Boolean	at_starting_profile (void) const

CORBA::Boolean	valid_forward_profile (void)

void	set_valid_profile (void)
	NON-THREAD-SAFE. Will set profile_success_ to true. More...

CORBA::Boolean	valid_profile (void) const

TAO_Profile *	base_profiles (const TAO_MProfile &mprofiles)

void	add_forward_profiles (const TAO_MProfile &mprofiles, const CORBA::Boolean permanent_forward=false)

CORBA::Boolean	next_profile_retry (void)

TAO_ORB_Core *	orb_core (void) const
	Accessor. More...

CORBA::Boolean	is_collocated (void) const
	Is this stub collocated with the servant? More...

void	is_collocated (CORBA::Boolean)
	Mutator to mark this stub as being collocated with the servant. More...

CORBA::ORB_ptr	servant_orb_ptr (void)
	This returns a duplicated ORB pointer. More...

CORBA::ORB_var &	servant_orb_var (void)
	This returns the ORB var itself (generally for temporary use). More...

void	servant_orb (CORBA::ORB_ptr orb)

void	collocated_servant (TAO_Abstract_ServantBase *servant)
	Mutator for setting the servant in collocated cases. More...

TAO_Abstract_ServantBase *	collocated_servant (void) const
	Accessor for the servant reference in collocated cases. More...

void	object_proxy_broker (TAO::Object_Proxy_Broker *proxy_broker)

TAO::Object_Proxy_Broker *	object_proxy_broker (void) const

int	create_ior_info (IOP::IOR *&ior_info, CORBA::ULong &index)

void	destroy (void)
	Deallocate the TAO_Stub object. More...

CORBA::Boolean	optimize_collocation_objects (void) const
	Return the cached value from the ORB_Core. More...

CORBA::Boolean	marshal (TAO_OutputCDR &)
	Needed to avoid copying forward_profiles for thread safety. More...

void	forwarded_on_exception (bool forwarded)

bool	forwarded_on_exception () const

Public Attributes
CORBA::String_var	type_id
	All objref representations carry around a type ID. More...

Protected Member Functions
virtual	~TAO_Stub (void)

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

TAO_Profile *	next_profile_i (void)
	NON-THREAD SAFE version of next_profile (void) More...

Protected Attributes
TAO_ORB_Core_Auto_Ptr	orb_core_
	Automatically manage the ORB_Core reference count. More...

CORBA::ORB_var	orb_

CORBA::Boolean	is_collocated_

CORBA::ORB_var	servant_orb_

TAO_Abstract_ServantBase *	collocated_servant_
	Servant pointer. It is 0 except for collocated objects. More...

TAO::Object_Proxy_Broker *	object_proxy_broker_
	Pointer to the Proxy Broker. More...

TAO_MProfile	base_profiles_
	Ordered list of profiles for this object. More...

TAO_MProfile *	forward_profiles_

TAO_MProfile *	forward_profiles_perm_

TAO_Profile *	profile_in_use_
	This is the profile that we are currently sending/receiving with. More...

TAO_SYNCH_MUTEX	profile_lock_
	Mutex to protect access to the forwarding profile. More...

CORBA::Boolean	profile_success_
	Have we successfully talked to the forward profile yet? More...

ACE_Atomic_Op< TAO_SYNCH_MUTEX, unsigned long >	refcount_
	Reference counter. More...

TAO_Policy_Set *	policies_

IOP::IOR *	ior_info_

IOP::IOR *	forwarded_ior_info_
	Forwarded IOR info. More...

CORBA::Boolean const	collocation_opt_

ACE_Atomic_Op< TAO_SYNCH_MUTEX, bool >	forwarded_on_exception_

Private Member Functions
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. More...

int	get_profile_ior_info (TAO_MProfile &profile, IOP::IOR *&ior_info)
	THREAD-SAFE Create the IOR info. More...

	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 )

protectedvirtual

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

ACE_INLINE void TAO_Stub::_decr_refcnt ( void )

ACE_INLINE void TAO_Stub::_incr_refcnt ( void )

void TAO_Stub::add_forward_profiles	(	const TAO_MProfile &	mprofiles,
		const CORBA::Boolean	permanent_forward = `false`
	)

THREAD SAFE. Set the forward_profiles. This object will assume ownership of this TAO_MProfile object!! if permanent_forward is true, currently used profiles will be replaced permanently, otherwise stub may fallback to current profiles later. The flag permanent_forward=true is only valid if currently used profile set represents a GroupObject (IOGR), otherwise this flag will be ignored.

ACE_INLINE CORBA::Boolean TAO_Stub::at_starting_profile ( void ) const

Returns true if the profile in use is the same as the profile in use after reset_profiles() is called.

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

Obtain a reference to the basic profile set.

ACE_INLINE TAO_MProfile & TAO_Stub::base_profiles ( void )

Obtain a reference to the basic profile set.

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 void TAO_Stub::collocated_servant ( TAO_Abstract_ServantBase * servant )

Mutator for setting the servant in collocated cases.

ACE_INLINE TAO_Abstract_ServantBase * TAO_Stub::collocated_servant ( void ) const

Accessor for the servant reference in collocated cases.

int TAO_Stub::create_ior_info	(	IOP::IOR *&	ior_info,
		CORBA::ULong &	index
	)

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.

ACE_INLINE TAO_MProfile * TAO_Stub::forward_profiles ( void )

Obtain a pointer to the forwarded profile set.

ACE_INLINE void TAO_Stub::forwarded_on_exception ( bool forwarded )

ACE_INLINE bool TAO_Stub::forwarded_on_exception ( ) const

CORBA::Policy_ptr TAO_Stub::get_cached_policy ( TAO_Cached_Policy_Type type )

virtual

CORBA::Policy_ptr TAO_Stub::get_policy ( CORBA::PolicyType type )

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 )

virtual

int TAO_Stub::get_profile_ior_info	(	TAO_MProfile &	profile,
		IOP::IOR *&	ior_info
	)

private

THREAD-SAFE Create the IOR info.

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

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).

ACE_INLINE CORBA::Boolean TAO_Stub::is_collocated ( void ) const

Is this stub collocated with the servant?

void TAO_Stub::is_collocated ( CORBA::Boolean collocated )

Mutator to mark this stub as being collocated with the servant.

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.

CORBA::Boolean TAO_Stub::marshal ( TAO_OutputCDR & cdr )

Needed to avoid copying forward_profiles for thread safety.

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 )

True if permanent location forward occured, in this case the lock must be set and the.

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 )

protected

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.

ACE_INLINE void TAO_Stub::object_proxy_broker ( TAO::Object_Proxy_Broker * proxy_broker )

Mutator for setting the object proxy broker pointer. CORBA::Objects using this stub will use this for standard calls like is_a; get_interface; etc...

ACE_INLINE TAO::Object_Proxy_Broker * TAO_Stub::object_proxy_broker ( void ) const

Accessor for getting the object proxy broker pointer. CORBA::Objects using this stub use this for standard calls like is_a; get_interface; etc...

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 )

Manage the base (non-forwarded) profiles. Returns a pointer to the profile_in_use object. This object retains ownership of this profile.

ACE_INLINE const TAO_SYNCH_MUTEX & 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 void TAO_Stub::reset_base ( void )

private

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

ACE_INLINE void TAO_Stub::reset_forward ( void )

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 )

protected

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 mutator 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).

TAO_Stub * TAO_Stub::set_policy_overrides	(	const CORBA::PolicyList &	policies,
		CORBA::SetOverrideType	set_add
	)

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 true.

ACE_INLINE TAO::Transport_Queueing_Strategy * TAO_Stub::transport_queueing_strategy ( void )

Return the queueing 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 true if a forward profile has successfully been used. profile_success_ && forward_profiles_

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

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.

TAO_Abstract_ServantBase* TAO_Stub::collocated_servant_

protected

Servant pointer. It is 0 except for collocated objects.

CORBA::Boolean const TAO_Stub::collocation_opt_

protected

TRUE if we want to take advantage of collocation optimization in this ORB. 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 decoupled 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.

TAO_MProfile* TAO_Stub::forward_profiles_perm_

protected

The bookmark indicating permanent forward occurred, the pointer is used to identify bottom of stack forward_profiles_

IOP::IOR* TAO_Stub::forwarded_ior_info_

protected

Forwarded IOR info.

ACE_Atomic_Op<TAO_SYNCH_MUTEX, bool> TAO_Stub::forwarded_on_exception_

protected

True if forwarding request upon some specific exceptions (e.g. OBJECT_NOT_EXIST) already happened.

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::Boolean TAO_Stub::is_collocated_

protected

Flag that indicates that this stub is collocated (and that it belongs to an ORB for which collocation optimisation is active).

TAO::Object_Proxy_Broker* TAO_Stub::object_proxy_broker_

protected

Pointer to the Proxy Broker.

This cached pointer instance takes care of routing the call for standard calls in CORBA::Object like _is_a (), _get_component () etc.

CORBA::ORB_var TAO_Stub::orb_

protected

ORB required for reference counting. This will help us keep the ORB around until the CORBA::Object we represent dies.

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.

TAO_SYNCH_MUTEX TAO_Stub::profile_lock_

protected

Mutex to protect access to the forwarding profile.

CORBA::Boolean TAO_Stub::profile_success_

protected

Have we successfully talked to the forward profile yet?

ACE_Atomic_Op<TAO_SYNCH_MUTEX, unsigned long> TAO_Stub::refcount_

protected

Reference counter.

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,

we know that the ORB will stay alive long enough, and,
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:

Public Member Functions

Public Attributes

Protected Member Functions

Protected Attributes

Private Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation