ACE
6.3.1
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Adapts an ACE timer queue to be driven asynchronously using signals. More...
#include <Timer_Queue_Adapters.h>
Public Types | |
typedef TQ | TIMER_QUEUE |
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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. More... | |
Public Member Functions | |
ACE_Async_Timer_Queue_Adapter (ACE_Sig_Set *mask=0) | |
Constructor. More... | |
long | schedule (TYPE type, const void *act, const ACE_Time_Value &future_time, const ACE_Time_Value &interval=ACE_Time_Value::zero) |
int | cancel (long timer_id, const void **act=0) |
int | expire (void) |
TQ & | timer_queue (void) |
Return a reference to the underlying timer queue. More... | |
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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 ¤t_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 | resume_handler (void) |
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. More... | |
virtual ACE_Reactor * | reactor (void) const |
Get the event demultiplexors. More... | |
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... | |
Private Member Functions | |
virtual int | schedule_ualarm (void) |
Perform the logic to compute the new ualarm(2) setting. More... | |
virtual int | handle_signal (int signum, siginfo_t *, ucontext_t *) |
Called back by SIGALRM handler. More... | |
Private Attributes | |
ACE_Sig_Handler | sig_handler_ |
TQ | timer_queue_ |
ACE_Sig_Set | mask_ |
Mask of signals to be blocked when we're servicing SIGALRM . More... | |
Additional Inherited Members | |
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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... | |
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typedef ACE_Atomic_Op < ACE_SYNCH_MUTEX, Reference_Count > | Atomic_Reference_Count |
Typedef for implementation of reference counting. More... | |
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ACE_Event_Handler (ACE_Reactor *=0, int priority=ACE_Event_Handler::LO_PRIORITY) | |
Force ACE_Event_Handler to be an abstract base class. More... | |
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Atomic_Reference_Count | reference_count_ |
Reference count. More... | |
Adapts an ACE timer queue to be driven asynchronously using signals.
This implementation uses the ACE_OS::ualarm call, to generate the SIGARLM signal that is caught by this class.
typedef TQ ACE_Async_Timer_Queue_Adapter< TQ, TYPE >::TIMER_QUEUE |
ACE_Async_Timer_Queue_Adapter< TQ, TYPE >::ACE_Async_Timer_Queue_Adapter | ( | 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.
int ACE_Async_Timer_Queue_Adapter< TQ, TYPE >::cancel | ( | long | timer_id, |
const void ** | act = 0 |
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Cancel the timer_id and pass back the act if an address is passed in.
int ACE_Async_Timer_Queue_Adapter< TQ, TYPE >::expire | ( | void | ) |
Dispatch all timers with expiry time at or before the current time. Returns the number of timers expired.
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privatevirtual |
Called back by SIGALRM
handler.
Reimplemented from ACE_Event_Handler.
long ACE_Async_Timer_Queue_Adapter< TQ, TYPE >::schedule | ( | TYPE | type, |
const void * | act, | ||
const ACE_Time_Value & | future_time, | ||
const ACE_Time_Value & | interval = ACE_Time_Value::zero |
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Schedule the timer according to the semantics of the ACE_Timer_List. This timer gets dispatched via a signal, rather than by a user calling expire(). Note that interval timers are not implemented yet.
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privatevirtual |
Perform the logic to compute the new ualarm(2) setting.
TQ & ACE_Async_Timer_Queue_Adapter< TQ, TYPE >::timer_queue | ( | void | ) |
Return a reference to the underlying timer queue.
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private |
Mask of signals to be blocked when we're servicing SIGALRM
.
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private |
Handler for the SIGALRM
signal, so that we can access our state without requiring any global variables.
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private |
Implementation of the timer queue (e.g., ACE_Timer_List, ACE_Timer_Heap, etc.).