ACE_Sig_Adapter Class Reference

Provide an adapter that transforms various types of signal handlers into the scheme used by the ACE_Reactor. More...

#include <Sig_Adapter.h>

Inheritance diagram for ACE_Sig_Adapter:

Collaboration diagram for ACE_Sig_Adapter:

Public Member Functions
	ACE_Sig_Adapter (ACE_Sig_Action &, int sigkey)
	ACE_Sig_Adapter (ACE_Event_Handler *, int sigkey)
	ACE_Sig_Adapter (ACE_Sig_Handler_Ex, int sigkey=0)
	~ACE_Sig_Adapter () override=default
int	sigkey () const
int	handle_signal (int, siginfo_t *, ucontext_t *) override
	Called by the ACE_Reactor to dispatch the signal handler.
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 void	reactor (ACE_Reactor *reactor)
	Set the event demultiplexors.
virtual ACE_Reactor *	reactor () const
	Get the event demultiplexors.
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 Attributes
	ACE_ALLOC_HOOK_DECLARE

Private Types
enum	{ ACE_HANDLER , SIG_ACTION , C_FUNCTION }
	Is this an external handler or an ACE handler? More...

Private Attributes
int const	sigkey_
	Key for this signal handler (used to remove it).
enum ACE_Sig_Adapter:: { ... }	type_
	Is this an external handler or an ACE handler?
ACE_Sig_Action	sa_
ACE_Event_Handler *	eh_ {}
	This is an ACE event handler.
ACE_Sig_Handler_Ex	sig_func_
	This is a normal C function.

Additional Inherited Members
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.
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_Event_Handler
typedef std::atomic< Reference_Count >	Atomic_Reference_Count
	Typedef for implementation of reference counting.
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 inherited from ACE_Event_Handler
Atomic_Reference_Count	reference_count_
	Reference count.

Detailed Description

Provide an adapter that transforms various types of signal handlers into the scheme used by the ACE_Reactor.

Member Enumeration Documentation

anonymous enum

anonymous enum

private

Is this an external handler or an ACE handler?

Enumerator
ACE_HANDLER	We're just wrapping an ACE_Event_Handler.
SIG_ACTION	An ACE_Sig_Action.
C_FUNCTION	A normal C function.

Constructor & Destructor Documentation

ACE_Sig_Adapter() [1/3]

ACE_Sig_Adapter::ACE_Sig_Adapter	(	ACE_Sig_Action &	sa,
		int	sigkey
	)

ACE_Sig_Adapter() [2/3]

ACE_Sig_Adapter::ACE_Sig_Adapter	(	ACE_Event_Handler *	eh,
		int	sigkey
	)

ACE_Sig_Adapter() [3/3]

ACE_Sig_Adapter::ACE_Sig_Adapter	(	ACE_Sig_Handler_Ex	sig_func,
		int	sigkey = 0
	)

~ACE_Sig_Adapter()

ACE_Sig_Adapter::~ACE_Sig_Adapter ( )

overridedefault

Member Function Documentation

handle_signal()

int ACE_Sig_Adapter::handle_signal ( int  signum, siginfo_t *  siginfo, ucontext_t *  ucontext  )

overridevirtual

Called by the ACE_Reactor to dispatch the signal handler.

Reimplemented from ACE_Event_Handler.

sigkey()

int ACE_Sig_Adapter::sigkey

(

)

const

Returns this signal key that's used to remove this from the ACE_Reactor's internal table.

Member Data Documentation

ACE_ALLOC_HOOK_DECLARE

ACE_Sig_Adapter::ACE_ALLOC_HOOK_DECLARE

eh_

ACE_Event_Handler* ACE_Sig_Adapter::eh_ {}

private

This is an ACE event handler.

sa_

ACE_Sig_Action ACE_Sig_Adapter::sa_

private

This should be a union, but C++ won't allow that because the ACE_Sig_Action has a constructor. This is an external handler (ugh).

sig_func_

ACE_Sig_Handler_Ex ACE_Sig_Adapter::sig_func_

private

This is a normal C function.

sigkey_

int const ACE_Sig_Adapter::sigkey_

private

Key for this signal handler (used to remove it).

enum { ... } ACE_Sig_Adapter::type_

Is this an external handler or an ACE handler?

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

• Sig_Adapter.h
• Sig_Adapter.cpp