ACE_Select_Reactor_Impl Class Reference

This class simply defines how Select_Reactor's basic interface functions should look like and provides a common base class for Select_Reactor using various locking mechanism. More...

#include <Select_Reactor_Base.h>

Inheritance diagram for ACE_Select_Reactor_Impl:

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Collaboration diagram for ACE_Select_Reactor_Impl:

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List of all members.

Public Types
enum	{ DEFAULT_SIZE = ACE_DEFAULT_SELECT_REACTOR_SIZE }
Public Member Functions
	ACE_Select_Reactor_Impl (bool mask_signals=true)
	Constructor.
virtual int	purge_pending_notifications (ACE_Event_Handler *=0, ACE_Reactor_Mask=ACE_Event_Handler::ALL_EVENTS_MASK)
virtual int	resumable_handler (void)
Protected Member Functions
virtual int	bit_ops (ACE_HANDLE handle, ACE_Reactor_Mask mask, ACE_Select_Reactor_Handle_Set &handle_set, int ops)
	Allow manipulation of the <wait_set_> mask and <ready_set_> mask.
virtual void	renew (void)=0
virtual int	is_suspended_i (ACE_HANDLE handle)=0
virtual void	clear_dispatch_mask (ACE_HANDLE handle, ACE_Reactor_Mask mask)
int	supress_notify_renew (void)
void	supress_notify_renew (int sr)
Protected Attributes
ACE_Select_Reactor_Handler_Repository	handler_rep_
	Table that maps <ACE_HANDLEs> to <ACE_Event_Handler *>'s.
ACE_Select_Reactor_Handle_Set	dispatch_set_
	Tracks handles that are ready for dispatch from <select>.
ACE_Select_Reactor_Handle_Set	wait_set_
	Tracks handles that are waited for by <select>.
ACE_Select_Reactor_Handle_Set	suspend_set_
	Tracks handles that are currently suspended.
ACE_Select_Reactor_Handle_Set	ready_set_
ACE_Timer_Queue *	timer_queue_
	Defined as a pointer to allow overriding by derived classes...
ACE_Sig_Handler *	signal_handler_
	Handle signals without requiring global/static variables.
ACE_Reactor_Notify *	notify_handler_
bool	delete_timer_queue_
bool	delete_signal_handler_
bool	delete_notify_handler_
bool	initialized_
	True if we've been initialized yet...
int	restart_
int	requeue_position_
ACE_thread_t	owner_
	The original thread that created this Select_Reactor.
bool	state_changed_
bool	mask_signals_
Private Member Functions
	ACE_Select_Reactor_Impl (const ACE_Select_Reactor_Impl &)
	Deny access since member-wise won't work...
ACE_Select_Reactor_Impl &	operator= (const ACE_Select_Reactor_Impl &)
Private Attributes
int	supress_renew_
Friends
class	ACE_Select_Reactor_Notify
class	ACE_Select_Reactor_Handler_Repository

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Detailed Description

This class simply defines how Select_Reactor's basic interface functions should look like and provides a common base class for Select_Reactor using various locking mechanism.

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Member Enumeration Documentation

anonymous enum

Enumerator:

DEFAULT_SIZE

Default size of the Select_Reactor's handle table.

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Constructor & Destructor Documentation

ACE_INLINE ACE_Select_Reactor_Impl::ACE_Select_Reactor_Impl

(

bool

mask_signals = true

)

Constructor.

ACE_Select_Reactor_Impl::ACE_Select_Reactor_Impl

(

const ACE_Select_Reactor_Impl &

)

[private]

Deny access since member-wise won't work...

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Member Function Documentation

int ACE_Select_Reactor_Impl::purge_pending_notifications	(	ACE_Event_Handler *	eh = 0,
		ACE_Reactor_Mask	mask = ACE_Event_Handler::ALL_EVENTS_MASK
	)			[virtual]

Purge any notifications pending in this reactor for the specified ACE_Event_Handler object. Returns the number of notifications purged. Returns -1 on error.

Implements ACE_Reactor_Impl.

int ACE_Select_Reactor_Impl::resumable_handler

(

void

)

[virtual]

Does the reactor allow the application to resume the handle on its own ie. can it pass on the control of handle resumption to the application. The select reactor has no handlers that can be resumed by the application. So return 0;

Implements ACE_Reactor_Impl.

Reimplemented in ACE_TP_Reactor.

int ACE_Select_Reactor_Impl::bit_ops	(	ACE_HANDLE	handle,
		ACE_Reactor_Mask	mask,
		ACE_Select_Reactor_Handle_Set &	handle_set,
		int	ops
	)			[protected, virtual]

Allow manipulation of the <wait_set_> mask and <ready_set_> mask.

virtual void ACE_Select_Reactor_Impl::renew

(

void

)

[protected, pure virtual]

Enqueue ourselves into the list of waiting threads at the appropriate point specified by <requeue_position_>.

Implemented in ACE_Select_Reactor_T< ACE_SELECT_REACTOR_TOKEN >, and ACE_Select_Reactor_T< ACE_Select_Reactor_Token >.

virtual int ACE_Select_Reactor_Impl::is_suspended_i

(

ACE_HANDLE

handle

)

[protected, pure virtual]

Check to see if the <Event_Handler> associated with handle is suspended. Returns 0 if not, 1 if so.

Implemented in ACE_Select_Reactor_T< ACE_SELECT_REACTOR_TOKEN >, and ACE_Select_Reactor_T< ACE_Select_Reactor_Token >.

void ACE_Select_Reactor_Impl::clear_dispatch_mask	(	ACE_HANDLE	handle,
		ACE_Reactor_Mask	mask
	)			[protected, virtual]

When register/unregister occur, then we need to re-eval our wait/suspend/dispatch set.

Reimplemented in ACE_TP_Reactor.

ACE_INLINE int ACE_Select_Reactor_Impl::supress_notify_renew

(

void

)

[protected]

Controls/access whether the notify handler should renew the Select_Reactor's token or not.

ACE_INLINE void ACE_Select_Reactor_Impl::supress_notify_renew

(

int

sr

)

[protected]

ACE_Select_Reactor_Impl& ACE_Select_Reactor_Impl::operator=

(

const ACE_Select_Reactor_Impl &

)

[private]

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Friends And Related Function Documentation

friend class ACE_Select_Reactor_Notify [friend]

friend class ACE_Select_Reactor_Handler_Repository [friend]

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Member Data Documentation

ACE_Select_Reactor_Handler_Repository ACE_Select_Reactor_Impl::handler_rep_ [protected]

Table that maps <ACE_HANDLEs> to <ACE_Event_Handler *>'s.

ACE_Select_Reactor_Handle_Set ACE_Select_Reactor_Impl::dispatch_set_ [protected]

Tracks handles that are ready for dispatch from <select>.

ACE_Select_Reactor_Handle_Set ACE_Select_Reactor_Impl::wait_set_ [protected]

Tracks handles that are waited for by <select>.

ACE_Select_Reactor_Handle_Set ACE_Select_Reactor_Impl::suspend_set_ [protected]

Tracks handles that are currently suspended.

ACE_Select_Reactor_Handle_Set ACE_Select_Reactor_Impl::ready_set_ [protected]

Track HANDLES we are interested in for various events that must be dispatched *without* going through <select>.

ACE_Timer_Queue* ACE_Select_Reactor_Impl::timer_queue_ [protected]

Defined as a pointer to allow overriding by derived classes...

ACE_Sig_Handler* ACE_Select_Reactor_Impl::signal_handler_ [protected]

Handle signals without requiring global/static variables.

ACE_Reactor_Notify* ACE_Select_Reactor_Impl::notify_handler_ [protected]

Callback object that unblocks the ACE_Select_Reactor if it's sleeping.

bool ACE_Select_Reactor_Impl::delete_timer_queue_ [protected]

Keeps track of whether we should delete the timer queue (if we didn't create it, then we don't delete it).

bool ACE_Select_Reactor_Impl::delete_signal_handler_ [protected]

Keeps track of whether we should delete the signal handler (if we didn't create it, then we don't delete it).

bool ACE_Select_Reactor_Impl::delete_notify_handler_ [protected]

Keeps track of whether we need to delete the notify handler (if we didn't create it, then we don't delete it).

bool ACE_Select_Reactor_Impl::initialized_ [protected]

True if we've been initialized yet...

int ACE_Select_Reactor_Impl::restart_ [protected]

Restart the <handle_events> event-loop method automatically when <select> is interrupted via <EINTR>.

int ACE_Select_Reactor_Impl::requeue_position_ [protected]

Position that the main ACE_Select_Reactor thread is requeued in the list of waiters during a <notify> callback. If this value == -1 we are requeued at the end of the list. Else if it's 0 then we are requeued at the front of the list. Else if it's > 1 then that indicates the number of waiters to skip over.

ACE_thread_t ACE_Select_Reactor_Impl::owner_ [protected]

The original thread that created this Select_Reactor.

bool ACE_Select_Reactor_Impl::state_changed_ [protected]

True if state has changed during dispatching of <ACE_Event_Handlers>, else false. This is used to determine whether we need to make another trip through the <Select_Reactor>'s <wait_for_multiple_events> loop.

bool ACE_Select_Reactor_Impl::mask_signals_ [protected]

If false then the Reactor will not mask the signals during the event dispatching. This is useful for applications that do not register any signal handlers and want to reduce the overhead introduce by the kernel level locks required to change the mask.

int ACE_Select_Reactor_Impl::supress_renew_ [private]

Determine whether we should renew Select_Reactor's token after handling the notification message.

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

• Select_Reactor_Base.h
• Select_Reactor_Base.cpp
• Select_Reactor_Base.inl