BUCKETs as an implementation for
a timer queue.
#include <ace/Timer_Hash_T.h>
template<class TYPE, class FUNCTOR, class ACE_LOCK, class BUCKET> class ACE_Timer_Hash_T : public ACE_Timer_Queue_T<TYPE, FUNCTOR, ACE_LOCK> {
public:typedef ACE_Timer_Hash_Iterator_T<TYPE, FUNCTOR, ACE_LOCK, BUCKET> HASH_ITERATOR; friend class ACE_Timer_Hash_Iterator_T<TYPE, FUNCTOR, ACE_LOCK, BUCKET>;typedef ACE_Timer_Queue_T<TYPE, FUNCTOR, ACE_LOCK> INHERITED;ACE_Timer_Hash_T ( size_t table_size, FUNCTOR *upcall_functor = 0, ACE_Free_List<ACE_Timer_Node_T <TYPE> > *freelist = 0 );ACE_Timer_Hash_T ( FUNCTOR *upcall_functor = 0, ACE_Free_List<ACE_Timer_Node_T <TYPE> > *freelist = 0 );virtual ~ACE_Timer_Hash_T (void);virtual int is_empty (void) const;virtual const ACE_Time_Value &earliest_time (void) const;virtual long schedule ( const TYPE &type, const void *act, const ACE_Time_Value &delay, const ACE_Time_Value &interval = ACE_Time_Value::zero );virtual int reset_interval ( long timer_id, const ACE_Time_Value &interval );virtual int cancel ( const TYPE &type, int dont_call_handle_close = 1 );virtual int cancel ( long timer_id, const void **act = 0, int dont_call_handle_close = 1 );virtual int expire (void);virtual int expire (const ACE_Time_Value ¤t_time);virtual ACE_Timer_Queue_Iterator_T<TYPE, FUNCTOR, ACE_LOCK> &iter ( void );virtual ACE_Timer_Node_T<TYPE> *remove_first (void);virtual void dump (void) const;virtual ACE_Timer_Node_T<TYPE> *get_first (void);private:virtual void reschedule (ACE_Timer_Node_T<TYPE> *);void find_new_earliest (void);size_t size_;BUCKET **table_;size_t table_size_;ACE_Timer_Hash_Upcall<TYPE, FUNCTOR, ACE_LOCK> table_functor_;size_t earliest_position_;HASH_ITERATOR *iterator_;inline ACE_UNIMPLEMENTED_FUNC ( ACE_Timer_Hash_T (const ACE_Timer_Hash_T<TYPE, FUNCTOR, ACE_LOCK, BUCKET> &) );};
ACE_Timer_Hash_T (
size_t table_size,
FUNCTOR *upcall_functor = 0,
ACE_Free_List<ACE_Timer_Node_T <TYPE> > *freelist = 0
);
table_size determines the size of the
hash table. upcall_functor is the instance of the FUNCTOR
to be used by the buckets. If upcall_functor is 0, a default
FUNCTOR will be created.
ACE_Timer_Hash_T (
FUNCTOR *upcall_functor = 0,
ACE_Free_List<ACE_Timer_Node_T <TYPE> > *freelist = 0
);
upcall_functor is the instance of the
FUNCTOR to be used by the queue. If upcall_functor is 0, Timer
Hash will create a default FUNCTOR. freelist the freelist of
timer nodes. If 0, then a default freelist will be created. The default
size will be ACE_DEFAULT_TIMERS and there will be no preallocation.
virtual ~ACE_Timer_Hash_T (void);
virtual int is_empty (void) const;
virtual const ACE_Time_Value &earliest_time (void) const;
ACE_Timer_Hash.
virtual long schedule (
const TYPE &type,
const void *act,
const ACE_Time_Value &delay,
const ACE_Time_Value &interval = ACE_Time_Value::zero
);
type that will expire after delay amount of time,
which is specified in absolute time. If it expires then act is
passed in as the value to the functor. If interval is != to
ACE_Time_Value::zero then it is used to reschedule the type
automatically, using relative time to the current gettimeofday.
This method returns a timer_id that is a pointer to a token
which stores information about the event. This timer_id can be
used to cancel the timer before it expires. Returns -1 on
failure.
virtual int reset_interval (
long timer_id,
const ACE_Time_Value &interval
);
timer_id to
interval, which is specified in relative time to the current
gettimeofday. If interval is equal to
ACE_Time_Value::zero, the timer will become a non-rescheduling
timer. Returns 0 if successful, -1 if not.
virtual int cancel (const TYPE &type, int dont_call_handle_close = 1);
type. If dont_call is 0
then the functor will be invoked. Returns number of timers
cancelled.
virtual int cancel (
long timer_id,
const void **act = 0,
int dont_call_handle_close = 1
);
timer_id value (which
was returned from the schedule method). If act is non-NULL
then it will be set to point to the ``magic cookie'' argument
passed in when the timer was registered. This makes it possible
to free up the memory and avoid memory leaks. If dont_call is
0 then the functor will be invoked. Returns 1 if cancellation
succeeded and 0 if the timer_id wasn't found.
virtual int expire (void);
functor for all timers whose values are =
ACE_OS::gettimeofday. Also accounts for timer_skew. Returns
the number of timers canceled.
virtual int expire (const ACE_Time_Value ¤t_time);
functor for all timers whose values are = cur_time.
This does not account for timer_skew. Returns the number of
timers canceled.
virtual ACE_Timer_Queue_Iterator_T<TYPE, FUNCTOR, ACE_LOCK> &iter (
void
);
ACE_Timer_Queue's iterator.
virtual ACE_Timer_Node_T<TYPE> *remove_first (void);
virtual void dump (void) const;
virtual ACE_Timer_Node_T<TYPE> *get_first (void);
inline ACE_UNIMPLEMENTED_FUNC (
ACE_Timer_Hash_T (const ACE_Timer_Hash_T<TYPE, FUNCTOR, ACE_LOCK, BUCKET> &)
);
brunsch@cs.wustl.edu