ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 > Class Template Reference

Generic factory for actively connecting clients and creating service handlers (SVC_HANDLERs). More...

#include <Connector.h>

Inheritance diagram for ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >:

Collaboration diagram for ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >:

Public Types
typedef SVC_HANDLER::addr_type	addr_type
typedef ACE_PEER_CONNECTOR	connector_type
typedef SVC_HANDLER	handler_type
typedef SVC_HANDLER::stream_type	stream_type
typedef ACE_PEER_CONNECTOR::PEER_ADDR	peer_addr_type
typedef ACE_PEER_CONNECTOR_ADDR	ACE_PEER_ADDR_TYPEDEF

Public Member Functions
	ACE_Connector (ACE_Reactor *r=ACE_Reactor::instance(), int flags=0)
virtual int	open (ACE_Reactor *r=ACE_Reactor::instance(), int flags=0)
virtual	~ACE_Connector (void)
	Shutdown a connector and release resources. More...
virtual int	connect (SVC_HANDLER *&svc_handler, const ACE_PEER_CONNECTOR_ADDR &remote_addr, const ACE_Synch_Options &synch_options=ACE_Synch_Options::defaults, const ACE_PEER_CONNECTOR_ADDR &local_addr=(peer_addr_type &) ACE_PEER_CONNECTOR_ADDR_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 ACE_PEER_CONNECTOR_ADDR &remote_addr, const ACE_Synch_Options &synch_options=ACE_Synch_Options::defaults, const ACE_PEER_CONNECTOR_ADDR &local_addr=(peer_addr_type &) ACE_PEER_CONNECTOR_ADDR_ANY, int reuse_addr=0, int flags=O_RDWR, int perms=0)
virtual int	connect_n (size_t n, SVC_HANDLER *svc_handlers[], ACE_PEER_CONNECTOR_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 int	close (void)
virtual ACE_PEER_CONNECTOR &	connector (void) const
	Return the underlying PEER_CONNECTOR object. More...
virtual void	initialize_svc_handler (ACE_HANDLE handle, SVC_HANDLER *svc_handler)
	Initialize Svc_Handler. More...
virtual void	reactor (ACE_Reactor *reactor)
	Set Reactor. More...
virtual ACE_Reactor *	reactor (void) const
	Get Reactor. More...
void	dump (void) const
	Dump the state of an object. More...
Public Member Functions inherited from ACE_Connector_Base< SVC_HANDLER >
virtual	~ACE_Connector_Base (void)
Public Member Functions inherited from ACE_Service_Object
	ACE_Service_Object (ACE_Reactor *=0)
	Constructor. More...
virtual	~ACE_Service_Object (void)
	Destructor. More...
Public Member Functions inherited from ACE_Event_Handler
virtual	~ACE_Event_Handler (void)
	Destructor is virtual to enable proper cleanup. More...
virtual ACE_HANDLE	get_handle (void) const
	Get the I/O handle. More...
virtual void	set_handle (ACE_HANDLE)
	Set the I/O handle. More...
virtual int	priority (void) const
virtual void	priority (int priority)
	Set the priority of the Event_Handler. More...
virtual int	handle_input (ACE_HANDLE fd=ACE_INVALID_HANDLE)
	Called when input events occur (e.g., connection or data). More...
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). More...
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. More...
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 (void)
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 (void) const
	Get only the reactor's timer related interface. More...
virtual Reference_Count	add_reference (void)
	Increment reference count on the handler. More...
virtual Reference_Count	remove_reference (void)
	Decrement reference count on the handler. More...
Reference_Counting_Policy &	reference_counting_policy (void)
	Current Reference_Counting_Policy. More...
Public Member Functions inherited from ACE_Shared_Object
	ACE_Shared_Object (void)
	Constructor. More...
virtual	~ACE_Shared_Object (void)
	Destructor. More...

Public Attributes
	ACE_ALLOC_HOOK_DECLARE
	Declare the dynamic allocation hooks. More...

Protected Types
typedef ACE_NonBlocking_Connect_Handler < SVC_HANDLER >	NBCH

Protected Member Functions
virtual int	make_svc_handler (SVC_HANDLER *&sh)
virtual int	connect_svc_handler (SVC_HANDLER *&svc_handler, 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)
virtual int	connect_svc_handler (SVC_HANDLER *&svc_handler, SVC_HANDLER *&sh_copy, 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)
virtual int	activate_svc_handler (SVC_HANDLER *svc_handler)
int	nonblocking_connect (SVC_HANDLER *, const ACE_Synch_Options &)
	Creates and registers ACE_NonBlocking_Connect_Handler. More...
virtual int	connect_i (SVC_HANDLER *&svc_handler, SVC_HANDLER **sh_copy, const ACE_PEER_CONNECTOR_ADDR &remote_addr, const ACE_Synch_Options &synch_options, const ACE_PEER_CONNECTOR_ADDR &local_addr, int reuse_addr, int flags, int perms)
	Implementation of the connect methods. More...
ACE_Unbounded_Set< ACE_HANDLE > &	non_blocking_handles (void)
virtual int	init (int argc, ACE_TCHAR *argv[])
virtual int	fini (void)
	Calls handle_close() to shutdown the Connector gracefully. More...
virtual int	info (ACE_TCHAR **strp, size_t length) const
	Default version returns address info in buf. More...
virtual int	suspend (void)
virtual int	resume (void)

Private Attributes
ACE_PEER_CONNECTOR	connector_
	This is the peer connector factory. More...
int	flags_
ACE_Reactor *	reactor_
	Pointer to the Reactor. More...
ACE_Unbounded_Set< ACE_HANDLE >	non_blocking_handles_
	Handle set representing the non-blocking connects in progress. More...

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. More...
Protected Attributes inherited from ACE_Event_Handler
Atomic_Reference_Count	reference_count_
	Reference count. More...

Detailed Description

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1>
class ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

Generic factory for actively connecting clients and creating service handlers (SVC_HANDLERs).

Implements the strategy for actively establishing connections with clients. An ACE_Connector is parameterized by concrete types that conform to the interfaces of PEER_CONNECTOR and SVC_HANDLER. The PEER_CONNECTOR is instantiated with a transport mechanism that actively establishes connections. The SVC_HANDLER is instantiated with a concrete type that performs the application-specific service. Both blocking and non-blocking connects are supported. Further, non-blocking connects support timeouts.

Member Typedef Documentation

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

typedef ACE_PEER_CONNECTOR_ADDR ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::ACE_PEER_ADDR_TYPEDEF

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

typedef SVC_HANDLER::addr_type ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::addr_type

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

typedef ACE_PEER_CONNECTOR ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::connector_type

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

typedef SVC_HANDLER ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::handler_type

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

typedef ACE_NonBlocking_Connect_Handler<SVC_HANDLER> ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::NBCH

protected

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

typedef ACE_PEER_CONNECTOR::PEER_ADDR ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::peer_addr_type

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

typedef SVC_HANDLER::stream_type ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::stream_type

Constructor & Destructor Documentation

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::ACE_Connector	(	ACE_Reactor *	r = ACE_Reactor::instance(),
		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.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

virtual ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::~ACE_Connector ( void  )

virtual

Shutdown a connector and release resources.

Member Function Documentation

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

virtual int ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::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 in ACE_Strategy_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

virtual int ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::cancel ( SVC_HANDLER *  svc_handler )

virtual

Cancel the svc_handler that was started asynchronously. Note that this is the only case when the Connector does not actively close the svc_handler. It is left up to the caller of <cancel> to decide the fate of the svc_handler.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

virtual int ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::close ( void  )

virtual

Close down the Connector. All pending non-blocking connects are canceled and the corresponding svc_handler is closed.

Reimplemented in ACE_Strategy_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

virtual int ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::connect ( SVC_HANDLER *&  svc_handler, const ACE_PEER_CONNECTOR_ADDR &  remote_addr, const ACE_Synch_Options &  synch_options = ACE_Synch_Options::defaults, const ACE_PEER_CONNECTOR_ADDR &  local_addr = (peer_addr_type &) ACE_PEER_CONNECTOR_ADDR_ANY, int  reuse_addr = 0, int  flags = O_RDWR, int  perms = 0  )

virtual

Initiate connection of svc_handler to peer at remote_addr using synch_options. If the caller wants to designate the selected local_addr they can (and can also insist that the local_addr be reused by passing a value reuse_addr == 1). flags and perms can be used to pass any flags that are needed to perform specific operations such as opening a file within connect with certain permissions. If the connection fails the <close> hook on the svc_handler will be called automatically to prevent resource leaks.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

virtual int ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::connect ( SVC_HANDLER *&  svc_handler_hint, SVC_HANDLER *&  svc_handler, const ACE_PEER_CONNECTOR_ADDR &  remote_addr, const ACE_Synch_Options &  synch_options = ACE_Synch_Options::defaults, const ACE_PEER_CONNECTOR_ADDR &  local_addr = (peer_addr_type &) ACE_PEER_CONNECTOR_ADDR_ANY, int  reuse_addr = 0, int  flags = O_RDWR, int  perms = 0  )

virtual

This is a variation on the previous <connect> method. On cached connectors the svc_handler_hint variable can be used as a hint for future lookups. Since this variable is modified in the context of the internal cache its use is thread-safe. But the actual svc_handler for the current connection is returned in the second parameter svc_handler. If the connection fails the <close> hook on the svc_handler will be called automatically to prevent resource leaks.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

virtual int ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::connect_i ( SVC_HANDLER *&  svc_handler, SVC_HANDLER **  sh_copy, const ACE_PEER_CONNECTOR_ADDR &  remote_addr, const ACE_Synch_Options &  synch_options, const ACE_PEER_CONNECTOR_ADDR &  local_addr, int  reuse_addr, int  flags, int  perms  )

protectedvirtual

Implementation of the connect methods.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

virtual int ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::connect_n ( size_t  n, SVC_HANDLER *  svc_handlers[], ACE_PEER_CONNECTOR_ADDR  remote_addrs[], ACE_TCHAR *  failed_svc_handlers = 0, const ACE_Synch_Options &  synch_options = ACE_Synch_Options::defaults  )

virtual

Initiate connection of n svc_handlers to peers at remote_addrs using synch_options. Returns -1 if failure occurs and 0 otherwise. If failed_svc_handlers is non-NULL, a 1 is placed in the corresponding index of failed_svc_handlers for each <svc_handlers[i]> that failed to connect, else a 0 is placed in that index.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

virtual int ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::connect_svc_handler ( SVC_HANDLER *&  svc_handler, 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  )

protectedvirtual

Bridge method for connecting the svc_handler to the remote_addr. The default behavior delegates to the <PEER_CONNECTOR::connect>.

Reimplemented in ACE_Strategy_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

virtual int ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::connect_svc_handler ( SVC_HANDLER *&  svc_handler, SVC_HANDLER *&  sh_copy, 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  )

protectedvirtual

Reimplemented in ACE_Strategy_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

virtual ACE_PEER_CONNECTOR& ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::connector ( void  ) const

virtual

Return the underlying PEER_CONNECTOR object.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

void ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::dump

(

void

)

const

Dump the state of an object.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

virtual int ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::fini ( void  )

protectedvirtual

Calls handle_close() to shutdown the Connector gracefully.

Reimplemented from ACE_Shared_Object.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

virtual int ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::info ( ACE_TCHAR **  strp, size_t  length  ) const

protectedvirtual

Default version returns address info in buf.

Reimplemented from ACE_Shared_Object.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

virtual int ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::init ( int  argc, ACE_TCHAR *  argv[]  )

protectedvirtual

Default version does no work and returns -1. Must be overloaded by application developer to do anything meaningful.

Reimplemented from ACE_Shared_Object.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

virtual void ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::initialize_svc_handler ( ACE_HANDLE  handle, SVC_HANDLER *  svc_handler  )

virtual

Initialize Svc_Handler.

Implements ACE_Connector_Base< SVC_HANDLER >.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

virtual int ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::make_svc_handler ( SVC_HANDLER *&  sh )

protectedvirtual

Bridge method for creating a SVC_HANDLER. 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 in ACE_Strategy_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

ACE_Unbounded_Set<ACE_HANDLE>& ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::non_blocking_handles ( void  )

protectedvirtual

Return the handle set representing the non-blocking connects in progress.

Implements ACE_Connector_Base< SVC_HANDLER >.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

int ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::nonblocking_connect ( SVC_HANDLER *  , const ACE_Synch_Options &    )

protected

Creates and registers ACE_NonBlocking_Connect_Handler.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

virtual int ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::open ( ACE_Reactor *  r = ACE_Reactor::instance(), 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.

Reimplemented in ACE_Strategy_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

virtual void ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::reactor ( ACE_Reactor *  reactor )

virtual

Set Reactor.

Reimplemented from ACE_Event_Handler.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

virtual ACE_Reactor* ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::reactor ( void  ) const

virtual

Get Reactor.

Reimplemented from ACE_Event_Handler.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

virtual int ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::resume ( void  )

protectedvirtual

Default version does no work and returns -1. Must be overloaded by application developer to do anything meaningful.

Reimplemented from ACE_Service_Object.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

virtual int ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::suspend ( void  )

protectedvirtual

Default version does no work and returns -1. Must be overloaded by application developer to do anything meaningful.

Reimplemented from ACE_Service_Object.

Member Data Documentation

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::ACE_ALLOC_HOOK_DECLARE

Declare the dynamic allocation hooks.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

ACE_PEER_CONNECTOR ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::connector_

private

This is the peer connector factory.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

int ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::flags_

private

Flags that indicate 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.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

ACE_Unbounded_Set<ACE_HANDLE> ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::non_blocking_handles_

private

Handle set representing the non-blocking connects in progress.

template<class SVC_HANDLER, ACE_PEER_CONNECTOR_1 >

ACE_Reactor* ACE_Connector< SVC_HANDLER, ACE_PEER_CONNECTOR_1 >::reactor_

private

Pointer to the Reactor.

---

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

• Connector.h