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ACE_Async_Timer_Queue_Adapter Class Template Reference

Adapts a <TQ> to be run asynchronously. More...

#include <Timer_Queue_Adapters.h>

Inheritance diagram for ACE_Async_Timer_Queue_Adapter

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List of all members.

Public Types

typedef TQ TIMER_QUEUE

Public Methods

 ACE_Async_Timer_Queue_Adapter (ACE_Sig_Set *mask = 0)
 Constructor. More...

long schedule (ACE_Event_Handler *type, const void *act, const ACE_Time_Value &delay, const ACE_Time_Value &interval = ACE_Time_Value::zero)
 Schedule the timer according to the semantics of the . More...

int cancel (long timer_id, const void **act = 0)
 Cancel the <timer_id> and pass back the if an address is passed in.

int expire (void)
 Dispatch all timers whose values are <= <cur_time>. Returns the number of timers canceled.

TQ& timer_queue (void)
 Access the underlying <TIMER_QUEUE>.


Private Methods

virtual int schedule_ualarm (void)
 Perform the logic to compute the new ualarm(2) setting.

virtual int handle_signal (int signum, siginfo_t *, ucontext_t *)
 Called back by <SIGALRM> handler.


Private Attributes

ACE_Sig_Handler sig_handler_
 Handler for the <SIGALRM> signal, so that we can access our state without requiring any global variables.

TQ timer_queue_
 Implementation of the timer queue (e.g., , , etc.).

ACE_Sig_Set mask_
 Mask of signals to be blocked when we're servicing <SIGALRM>.


Detailed Description

template<class TQ> template class ACE_Async_Timer_Queue_Adapter

Adapts a <TQ> to be run asynchronously.

This implementation uses the <ualarm> call, which generates the SIGARLM signal that is caught by this class.


Member Typedef Documentation

template<classTQ>
typedef TQ ACE_Async_Timer_Queue_Adapter<TQ>::TIMER_QUEUE
 


Constructor & Destructor Documentation

template<classTQ>
ACE_Async_Timer_Queue_Adapter<TQ>::ACE_Async_Timer_Queue_Adapter<TQ> ( ACE_Sig_Set * mask = 0 )
 

Constructor.

Register the SIGALRM handler. If <mask> == 0 then block all signals when <SIGALRM> is run. Otherwise, just block the signals indicated in <mask>.


Member Function Documentation

template<classTQ>
int ACE_Async_Timer_Queue_Adapter<TQ>::cancel ( long timer_id,
const void ** act = 0 )
 

Cancel the <timer_id> and pass back the if an address is passed in.

template<classTQ>
int ACE_Async_Timer_Queue_Adapter<TQ>::expire ( void )
 

Dispatch all timers whose values are <= <cur_time>. Returns the number of timers canceled.

template<classTQ>
int ACE_Async_Timer_Queue_Adapter<TQ>::handle_signal ( int signum,
siginfo_t * siginfo,
ucontext_t * ucontext ) [private, virtual]
 

Called back by <SIGALRM> handler.

Reimplemented from ACE_Event_Handler.

template<classTQ>
long ACE_Async_Timer_Queue_Adapter<TQ>::schedule ( ACE_Event_Handler * type,
const void * act,
const ACE_Time_Value & delay,
const ACE_Time_Value & interval = ACE_Time_Value::zero )
 

Schedule the timer according to the semantics of the .

Tthis timer gets dispatched via a signal, rather than by a user calling <expire>. Note that interval timers are not implemented yet.

template<classTQ>
int ACE_Async_Timer_Queue_Adapter<TQ>::schedule_ualarm ( void ) [private, virtual]
 

Perform the logic to compute the new ualarm(2) setting.

template<classTQ>
TQ & ACE_Async_Timer_Queue_Adapter<TQ>::timer_queue ( void ) [inline]
 

Access the underlying <TIMER_QUEUE>.


Member Data Documentation

template<classTQ>
ACE_Sig_Set ACE_Async_Timer_Queue_Adapter<TQ>::mask_ [private]
 

Mask of signals to be blocked when we're servicing <SIGALRM>.

template<classTQ>
ACE_Sig_Handler ACE_Async_Timer_Queue_Adapter<TQ>::sig_handler_ [private]
 

Handler for the <SIGALRM> signal, so that we can access our state without requiring any global variables.

template<classTQ>
TQ ACE_Async_Timer_Queue_Adapter<TQ>::timer_queue_ [private]
 

Implementation of the timer queue (e.g., , , etc.).


The documentation for this class was generated from the following files:
Generated at Wed Nov 21 10:29:21 2001 for ACE by doxygen1.2.3 written by Dimitri van Heesch, © 1997-2000