Abstract factory for creating a service handler (SVC_HANDLER), connecting the SVC_HANDLER, and activating the SVC_HANDLER. More...

#include <Connector.h>

Inheritance diagram for ACE_Strategy_Connector< SVC_HANDLER, PEER_CONNECTOR >:

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Collaboration diagram for ACE_Strategy_Connector< SVC_HANDLER, PEER_CONNECTOR >:

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Public Types
typedef ACE_Creation_Strategy< SVC_HANDLER >	creation_strategy_type

typedef ACE_Connect_Strategy< SVC_HANDLER, PEER_CONNECTOR >	connect_strategy_type

typedef ACE_Concurrency_Strategy< SVC_HANDLER >	concurrency_strategy_type

typedef ACE_Connector< SVC_HANDLER, PEER_CONNECTOR >	base_type

typedef ACE_Creation_Strategy< SVC_HANDLER >	CREATION_STRATEGY

typedef ACE_Connect_Strategy< SVC_HANDLER, PEER_CONNECTOR >	CONNECT_STRATEGY

typedef ACE_Concurrency_Strategy< SVC_HANDLER >	CONCURRENCY_STRATEGY

typedef ACE_Connector< SVC_HANDLER, PEER_CONNECTOR >	SUPER

Public Types inherited from ACE_Connector< SVC_HANDLER, PEER_CONNECTOR >
typedef SVC_HANDLER::addr_type	addr_type

typedef PEER_CONNECTOR	connector_type

typedef SVC_HANDLER	handler_type

typedef SVC_HANDLER::stream_type	stream_type

typedef PEER_CONNECTOR::PEER_ADDR	peer_addr_type

typedef PEER_CONNECTOR::PEER_ADDR	PEER_ADDR_TYPEDEF

Public Types inherited from ACE_Event_Handler
enum	{ LO_PRIORITY = 0 , HI_PRIORITY = 10 , NULL_MASK = 0 , READ_MASK = (1 << 0) , WRITE_MASK = (1 << 1) , EXCEPT_MASK = (1 << 2) , ACCEPT_MASK = (1 << 3) , CONNECT_MASK = (1 << 4) , TIMER_MASK = (1 << 5) , QOS_MASK = (1 << 6) , GROUP_QOS_MASK = (1 << 7) , SIGNAL_MASK = (1 << 8) , ALL_EVENTS_MASK , RWE_MASK , DONT_CALL = (1 << 9) }

enum	{ ACE_EVENT_HANDLER_NOT_RESUMED = -1 , ACE_REACTOR_RESUMES_HANDLER = 0 , ACE_APPLICATION_RESUMES_HANDLER }

typedef long	Reference_Count
	Reference count type.

Public Member Functions
	ACE_Strategy_Connector (ACE_Reactor r=ACE_Reactor::instance(), ACE_Creation_Strategy< SVC_HANDLER > =0, ACE_Connect_Strategy< SVC_HANDLER, PEER_CONNECTOR > =0, ACE_Concurrency_Strategy< SVC_HANDLER > =0, int flags=0)

virtual int	open (ACE_Reactor *r, int flags)

virtual int	open (ACE_Reactor r=ACE_Reactor::instance(), ACE_Creation_Strategy< SVC_HANDLER > =0, ACE_Connect_Strategy< SVC_HANDLER, PEER_CONNECTOR > =0, ACE_Concurrency_Strategy< SVC_HANDLER > =0, int flags=0)

virtual	~ACE_Strategy_Connector ()
	Shutdown a connector and release resources.

virtual int	close ()
	Close down the Connector.

virtual ACE_Creation_Strategy< SVC_HANDLER > *	creation_strategy () const

virtual ACE_Connect_Strategy< SVC_HANDLER, PEER_CONNECTOR > *	connect_strategy () const

virtual ACE_Concurrency_Strategy< SVC_HANDLER > *	concurrency_strategy () const

Public Member Functions inherited from ACE_Connector< SVC_HANDLER, PEER_CONNECTOR >
	ACE_Connector (ACE_Reactor *r=ACE_Reactor::instance(), int flags=0)

virtual	~ACE_Connector ()
	Shutdown a connector and release resources.

virtual int	connect (SVC_HANDLER *&svc_handler, const typename PEER_CONNECTOR::PEER_ADDR &remote_addr, const ACE_Synch_Options &synch_options=ACE_Synch_Options::defaults, const typename PEER_CONNECTOR::PEER_ADDR &local_addr=reinterpret_cast< const peer_addr_type & >(peer_addr_type::sap_any), int reuse_addr=0, int flags=O_RDWR, int perms=0)

virtual int	connect (SVC_HANDLER &svc_handler_hint, SVC_HANDLER &svc_handler, const typename PEER_CONNECTOR::PEER_ADDR &remote_addr, const ACE_Synch_Options &synch_options=ACE_Synch_Options::defaults, const typename PEER_CONNECTOR::PEER_ADDR &local_addr=reinterpret_cast< const peer_addr_type & >(peer_addr_type::sap_any), int reuse_addr=0, int flags=O_RDWR, int perms=0)

virtual int	connect_n (size_t n, SVC_HANDLER svc_handlers[], typename PEER_CONNECTOR::PEER_ADDR remote_addrs[], ACE_TCHAR failed_svc_handlers=0, const ACE_Synch_Options &synch_options=ACE_Synch_Options::defaults)

virtual int	cancel (SVC_HANDLER *svc_handler)

virtual PEER_CONNECTOR &	connector () const
	Return the underlying PEER_CONNECTOR object.

virtual void	initialize_svc_handler (ACE_HANDLE handle, SVC_HANDLER *svc_handler)
	Initialize Svc_Handler.

virtual void	reactor (ACE_Reactor *reactor)
	Set Reactor.

virtual ACE_Reactor *	reactor () const
	Get Reactor.

void	dump () const
	Dump the state of an object.

Public Member Functions inherited from ACE_Connector_Base< SVC_HANDLER >
virtual	~ACE_Connector_Base ()=default

Public Member Functions inherited from ACE_Service_Object
	ACE_Service_Object (ACE_Reactor *=0)
	Constructor.

virtual	~ACE_Service_Object ()
	Destructor.

Public Member Functions inherited from ACE_Event_Handler
virtual	~ACE_Event_Handler ()=default
	Destructor is virtual to enable proper cleanup.

virtual ACE_HANDLE	get_handle () const
	Get the I/O handle.

virtual void	set_handle (ACE_HANDLE)
	Set the I/O handle.

virtual int	priority () const

virtual void	priority (int priority)
	Set the priority of the Event_Handler.

virtual int	handle_input (ACE_HANDLE fd=ACE_INVALID_HANDLE)
	Called when input events occur (e.g., connection or data).

virtual int	handle_output (ACE_HANDLE fd=ACE_INVALID_HANDLE)

virtual int	handle_exception (ACE_HANDLE fd=ACE_INVALID_HANDLE)
	Called when an exceptional events occur (e.g., SIGURG).

virtual int	handle_timeout (const ACE_Time_Value &current_time, const void *act=0)

virtual int	handle_exit (ACE_Process *)
	Called when a process exits.

virtual int	handle_close (ACE_HANDLE handle, ACE_Reactor_Mask close_mask)

virtual int	handle_signal (int signum, siginfo_t =0, ucontext_t =0)

virtual int	resume_handler ()

virtual int	handle_qos (ACE_HANDLE=ACE_INVALID_HANDLE)

virtual int	handle_group_qos (ACE_HANDLE=ACE_INVALID_HANDLE)

virtual ACE_Reactor_Timer_Interface *	reactor_timer_interface () const
	Get only the reactor's timer related interface.

virtual Reference_Count	add_reference ()
	Increment reference count on the handler.

virtual Reference_Count	remove_reference ()
	Decrement reference count on the handler.

Reference_Counting_Policy &	reference_counting_policy ()
	Current Reference_Counting_Policy.

Public Member Functions inherited from ACE_Shared_Object
	ACE_Shared_Object ()
	Constructor.

virtual	~ACE_Shared_Object ()
	Destructor.

Public Attributes
	ACE_ALLOC_HOOK_DECLARE
	Declare the dynamic allocation hooks.

Public Attributes inherited from ACE_Connector< SVC_HANDLER, PEER_CONNECTOR >
	ACE_ALLOC_HOOK_DECLARE
	Declare the dynamic allocation hooks.

Public Attributes inherited from ACE_Service_Object
	ACE_ALLOC_HOOK_DECLARE
	Declare the dynamic allocation hooks.

Protected Member Functions
virtual int	make_svc_handler (SVC_HANDLER *&sh)

virtual int	connect_svc_handler (SVC_HANDLER &sh, const typename PEER_CONNECTOR::PEER_ADDR &remote_addr, ACE_Time_Value timeout, const typename PEER_CONNECTOR::PEER_ADDR &local_addr, int reuse_addr, int flags, int perms)

virtual int	connect_svc_handler (SVC_HANDLER &sh, SVC_HANDLER &sh_copy, const typename PEER_CONNECTOR::PEER_ADDR &remote_addr, ACE_Time_Value *timeout, const typename PEER_CONNECTOR::PEER_ADDR &local_addr, int reuse_addr, int flags, int perms)

virtual int	activate_svc_handler (SVC_HANDLER *svc_handler)

Protected Member Functions inherited from ACE_Connector< SVC_HANDLER, PEER_CONNECTOR >
int	nonblocking_connect (SVC_HANDLER *, const ACE_Synch_Options &)
	Creates and registers ACE_NonBlocking_Connect_Handler.

virtual int	connect_i (SVC_HANDLER &svc_handler, SVC_HANDLER *sh_copy, const typename PEER_CONNECTOR::PEER_ADDR &remote_addr, const ACE_Synch_Options &synch_options, const typename PEER_CONNECTOR::PEER_ADDR &local_addr, int reuse_addr, int flags, int perms)
	Implementation of the connect methods.

ACE_Unbounded_Set< ACE_HANDLE > &	non_blocking_handles ()

virtual int	init (int argc, ACE_TCHAR *argv[])

virtual int	fini ()
	Calls handle_close() to shutdown the Connector gracefully.

virtual int	info (ACE_TCHAR **strp, size_t length) const
	Default version returns address info in buf.

virtual int	suspend ()

virtual int	resume ()

Protected Member Functions inherited from ACE_Event_Handler
	ACE_Event_Handler (ACE_Reactor *=nullptr, int priority=ACE_Event_Handler::LO_PRIORITY)
	Force ACE_Event_Handler to be an abstract base class.

Protected Attributes
CREATION_STRATEGY *	creation_strategy_
	Creation strategy for an Connector.

bool	delete_creation_strategy_

CONNECT_STRATEGY *	connect_strategy_
	Connect strategy for a Connector.

bool	delete_connect_strategy_

CONCURRENCY_STRATEGY *	concurrency_strategy_
	Concurrency strategy for a Connector.

bool	delete_concurrency_strategy_

Protected Attributes inherited from ACE_Event_Handler
Atomic_Reference_Count	reference_count_
	Reference count.

Additional Inherited Members
Static Public Member Functions inherited from ACE_Event_Handler
static ACE_THR_FUNC_RETURN	read_adapter (void *event_handler)

static int	register_stdin_handler (ACE_Event_Handler eh, ACE_Reactor reactor, ACE_Thread_Manager *thr_mgr, int flags=THR_DETACHED)

static int	remove_stdin_handler (ACE_Reactor reactor, ACE_Thread_Manager thr_mgr)
	Performs the inverse of the register_stdin_handler() method.

Protected Types inherited from ACE_Connector< SVC_HANDLER, PEER_CONNECTOR >
typedef ACE_NonBlocking_Connect_Handler< SVC_HANDLER >	NBCH

Protected Types inherited from ACE_Event_Handler
typedef std::atomic< Reference_Count >	Atomic_Reference_Count
	Typedef for implementation of reference counting.

Detailed Description

template<class SVC_HANDLER, typename PEER_CONNECTOR>
class ACE_Strategy_Connector< SVC_HANDLER, PEER_CONNECTOR >

Abstract factory for creating a service handler (SVC_HANDLER), connecting the SVC_HANDLER, and activating the SVC_HANDLER.

Implements a flexible and extensible set of strategies for actively establishing connections with clients. There are three main strategies: (1) creating a SVC_HANDLER, (2) actively initiating a new connection from the client, and (3) activating the SVC_HANDLER with a particular concurrency mechanism after the connection is established.

Member Typedef Documentation

◆ base_type

template<class SVC_HANDLER , typename PEER_CONNECTOR >

typedef ACE_Connector<SVC_HANDLER, PEER_CONNECTOR> ACE_Strategy_Connector< SVC_HANDLER, PEER_CONNECTOR >::base_type

◆ CONCURRENCY_STRATEGY

template<class SVC_HANDLER , typename PEER_CONNECTOR >

typedef ACE_Concurrency_Strategy<SVC_HANDLER> ACE_Strategy_Connector< SVC_HANDLER, PEER_CONNECTOR >::CONCURRENCY_STRATEGY

◆ concurrency_strategy_type

template<class SVC_HANDLER , typename PEER_CONNECTOR >

typedef ACE_Concurrency_Strategy<SVC_HANDLER> ACE_Strategy_Connector< SVC_HANDLER, PEER_CONNECTOR >::concurrency_strategy_type

◆ CONNECT_STRATEGY

template<class SVC_HANDLER , typename PEER_CONNECTOR >

typedef ACE_Connect_Strategy<SVC_HANDLER, PEER_CONNECTOR> ACE_Strategy_Connector< SVC_HANDLER, PEER_CONNECTOR >::CONNECT_STRATEGY

◆ connect_strategy_type

template<class SVC_HANDLER , typename PEER_CONNECTOR >

typedef ACE_Connect_Strategy<SVC_HANDLER, PEER_CONNECTOR> ACE_Strategy_Connector< SVC_HANDLER, PEER_CONNECTOR >::connect_strategy_type

◆ CREATION_STRATEGY

template<class SVC_HANDLER , typename PEER_CONNECTOR >

typedef ACE_Creation_Strategy<SVC_HANDLER> ACE_Strategy_Connector< SVC_HANDLER, PEER_CONNECTOR >::CREATION_STRATEGY

◆ creation_strategy_type

template<class SVC_HANDLER , typename PEER_CONNECTOR >

typedef ACE_Creation_Strategy<SVC_HANDLER> ACE_Strategy_Connector< SVC_HANDLER, PEER_CONNECTOR >::creation_strategy_type

◆ SUPER

template<class SVC_HANDLER , typename PEER_CONNECTOR >

typedef ACE_Connector<SVC_HANDLER, PEER_CONNECTOR> ACE_Strategy_Connector< SVC_HANDLER, PEER_CONNECTOR >::SUPER

Constructor & Destructor Documentation

◆ ACE_Strategy_Connector()

template<typename SVC_HANDLER , typename PEER_CONNECTOR >

ACE_Strategy_Connector< SVC_HANDLER, PEER_CONNECTOR >::ACE_Strategy_Connector	(	ACE_Reactor *	r = ACE_Reactor::instance (),
		ACE_Creation_Strategy< SVC_HANDLER > *	cre_s = 0,
		ACE_Connect_Strategy< SVC_HANDLER, PEER_CONNECTOR > *	conn_s = 0,
		ACE_Concurrency_Strategy< SVC_HANDLER > *	con_s = 0,
		int	flags = 0 )

Initialize a connector. flags indicates how SVC_HANDLER's should be initialized prior to being activated. Right now, the only flag that is processed is ACE_NONBLOCK, which enabled non-blocking I/O on the SVC_HANDLER when it is opened.

◆ ~ACE_Strategy_Connector()

template<typename SVC_HANDLER , typename PEER_CONNECTOR >

ACE_Strategy_Connector< SVC_HANDLER, PEER_CONNECTOR >::~ACE_Strategy_Connector ( )

virtual

Shutdown a connector and release resources.

Member Function Documentation

◆ activate_svc_handler()

template<typename SVC_HANDLER , typename PEER_CONNECTOR >

int ACE_Strategy_Connector< SVC_HANDLER, PEER_CONNECTOR >::activate_svc_handler ( SVC_HANDLER * svc_handler )

protectedvirtual

Bridge method for activating a SVC_HANDLER with the appropriate concurrency strategy. The default behavior of this method is to activate the SVC_HANDLER by calling its <open> method (which allows the SVC_HANDLER to define its own concurrency strategy). However, subclasses can override this strategy to do more sophisticated concurrency activations (such as creating the SVC_HANDLER as an "active object" via multi-threading or multi-processing).

Reimplemented from ACE_Connector< SVC_HANDLER, PEER_CONNECTOR >.

◆ close()

template<typename SVC_HANDLER , typename PEER_CONNECTOR >

int ACE_Strategy_Connector< SVC_HANDLER, PEER_CONNECTOR >::close ( )

virtual

Close down the Connector.

Reimplemented from ACE_Connector< SVC_HANDLER, PEER_CONNECTOR >.

◆ concurrency_strategy()

template<typename SVC_HANDLER , typename PEER_CONNECTOR >

ACE_Concurrency_Strategy< SVC_HANDLER > * ACE_Strategy_Connector< SVC_HANDLER, PEER_CONNECTOR >::concurrency_strategy ( ) const

virtual

◆ connect_strategy()

template<typename SVC_HANDLER , typename PEER_CONNECTOR >

ACE_Connect_Strategy< SVC_HANDLER, PEER_CONNECTOR > * ACE_Strategy_Connector< SVC_HANDLER, PEER_CONNECTOR >::connect_strategy ( ) const

virtual

◆ connect_svc_handler() [1/2]

template<typename SVC_HANDLER , typename PEER_CONNECTOR >

int ACE_Strategy_Connector< SVC_HANDLER, PEER_CONNECTOR >::connect_svc_handler	(	SVC_HANDLER *&	sh,
		const typename PEER_CONNECTOR::PEER_ADDR &	remote_addr,
		ACE_Time_Value *	timeout,
		const typename PEER_CONNECTOR::PEER_ADDR &	local_addr,
		int	reuse_addr,
		int	flags,
		int	perms )

protectedvirtual

Bridge method for connecting the new connection into the SVC_HANDLER. The default behavior delegates to the <PEER_CONNECTOR::connect> in the <Connect_Strategy>.

Reimplemented from ACE_Connector< SVC_HANDLER, PEER_CONNECTOR >.

◆ connect_svc_handler() [2/2]

template<typename SVC_HANDLER , typename PEER_CONNECTOR >

int ACE_Strategy_Connector< SVC_HANDLER, PEER_CONNECTOR >::connect_svc_handler	(	SVC_HANDLER *&	sh,
		SVC_HANDLER *&	sh_copy,
		const typename PEER_CONNECTOR::PEER_ADDR &	remote_addr,
		ACE_Time_Value *	timeout,
		const typename PEER_CONNECTOR::PEER_ADDR &	local_addr,
		int	reuse_addr,
		int	flags,
		int	perms )

protectedvirtual

Bridge method for connecting the new connection into the SVC_HANDLER. The default behavior delegates to the <PEER_CONNECTOR::connect> in the <Connect_Strategy>. sh_copy is used to obtain a copy of the sh pointer, but that can be kept in the stack; the motivation is a bit too long to include here, but basically we want to modify sh safely, using the internal locks in the Connect_Strategy, while saving a TSS copy in sh_copy, usually located in the stack.

Reimplemented from ACE_Connector< SVC_HANDLER, PEER_CONNECTOR >.

◆ creation_strategy()

template<typename SVC_HANDLER , typename PEER_CONNECTOR >

ACE_Creation_Strategy< SVC_HANDLER > * ACE_Strategy_Connector< SVC_HANDLER, PEER_CONNECTOR >::creation_strategy ( ) const

virtual

◆ make_svc_handler()

template<typename SVC_HANDLER , typename PEER_CONNECTOR >

int ACE_Strategy_Connector< SVC_HANDLER, PEER_CONNECTOR >::make_svc_handler ( SVC_HANDLER *& sh )

protectedvirtual

Bridge method for creating a SVC_HANDLER. The strategy for creating a SVC_HANDLER are configured into the Connector via it's <creation_strategy_>. The default is to create a new SVC_HANDLER only if sh == 0, else sh is unchanged. However, subclasses can override this policy to perform SVC_HANDLER creation in any way that they like (such as creating subclass instances of SVC_HANDLER, using a singleton, dynamically linking the handler, etc.). Returns -1 if failure, else 0.

Reimplemented from ACE_Connector< SVC_HANDLER, PEER_CONNECTOR >.

◆ open() [1/2]

template<typename SVC_HANDLER , typename PEER_CONNECTOR >

int ACE_Strategy_Connector< SVC_HANDLER, PEER_CONNECTOR >::open	(	ACE_Reactor *	r,
		int	flags )

virtual

Initialize a connector. flags indicates how SVC_HANDLER's should be initialized prior to being activated. Right now, the only flag that is processed is ACE_NONBLOCK, which enabled non-blocking I/O on the SVC_HANDLER when it is opened. Default strategies would be created and used.

Reimplemented from ACE_Connector< SVC_HANDLER, PEER_CONNECTOR >.

◆ open() [2/2]

template<typename SVC_HANDLER , typename PEER_CONNECTOR >

int ACE_Strategy_Connector< SVC_HANDLER, PEER_CONNECTOR >::open	(	ACE_Reactor *	r = ACE_Reactor::instance (),
		ACE_Creation_Strategy< SVC_HANDLER > *	cre_s = 0,
		ACE_Connect_Strategy< SVC_HANDLER, PEER_CONNECTOR > *	conn_s = 0,
		ACE_Concurrency_Strategy< SVC_HANDLER > *	con_s = 0,
		int	flags = 0 )

virtual

Initialize a connector. flags indicates how SVC_HANDLER's should be initialized prior to being activated. Right now, the only flag that is processed is ACE_NONBLOCK, which enabled non-blocking I/O on the SVC_HANDLER when it is opened.