ACE
6.3.1
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Unblock the ACE_Select_Reactor from its event loop. More...
#include <Select_Reactor_Base.h>
Public Member Functions | |
ACE_Select_Reactor_Notify (void) | |
Constructor. More... | |
virtual | ~ACE_Select_Reactor_Notify (void) |
Destructor. More... | |
virtual int | open (ACE_Reactor_Impl *, ACE_Timer_Queue *=0, int disable_notify_pipe=ACE_DISABLE_NOTIFY_PIPE_DEFAULT) |
Initialize. More... | |
virtual int | close (void) |
Destroy. More... | |
virtual int | notify (ACE_Event_Handler *=0, ACE_Reactor_Mask=ACE_Event_Handler::EXCEPT_MASK, ACE_Time_Value *timeout=0) |
virtual int | dispatch_notifications (int &number_of_active_handles, ACE_Handle_Set &rd_mask) |
virtual ACE_HANDLE | notify_handle (void) |
virtual int | dispatch_notify (ACE_Notification_Buffer &buffer) |
virtual int | read_notify_pipe (ACE_HANDLE handle, ACE_Notification_Buffer &buffer) |
virtual int | is_dispatchable (ACE_Notification_Buffer &buffer) |
Verify whether the buffer has dispatchable info or not. More... | |
virtual int | handle_input (ACE_HANDLE handle) |
virtual void | max_notify_iterations (int) |
virtual int | max_notify_iterations (void) |
virtual int | purge_pending_notifications (ACE_Event_Handler *sh, ACE_Reactor_Mask mask=ACE_Event_Handler::ALL_EVENTS_MASK) |
virtual void | dump (void) const |
Dump the state of an object. 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_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 | handle_signal (int signum, siginfo_t *=0, ucontext_t *=0) |
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... | |
Public Attributes | |
ACE_ALLOC_HOOK_DECLARE | |
Declare the dynamic allocation hooks. More... | |
Protected Attributes | |
ACE_Select_Reactor_Impl * | select_reactor_ |
ACE_Pipe | notification_pipe_ |
int | max_notify_iterations_ |
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Atomic_Reference_Count | reference_count_ |
Reference count. More... | |
Additional Inherited Members | |
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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... | |
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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... | |
Unblock the ACE_Select_Reactor from its event loop.
This implementation is necessary for cases where the ACE_Select_Reactor is run in a multi-threaded program. In this case, we need to be able to unblock select
or poll
when updates occur other than in the main ACE_Select_Reactor thread. To do this, we signal an auto-reset event the ACE_Select_Reactor is listening on. If an ACE_Event_Handler and ACE_Select_Reactor_Mask is passed to notify
, the appropriate handle_*
method is dispatched in the context of the ACE_Select_Reactor thread.
ACE_Select_Reactor_Notify::ACE_Select_Reactor_Notify | ( | void | ) |
Constructor.
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Destructor.
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Destroy.
Implements ACE_Reactor_Notify.
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Handles pending threads (if any) that are waiting to unblock the ACE_Select_Reactor.
Implements ACE_Reactor_Notify.
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Handle one of the notify call on the handle
. This could be because of a thread trying to unblock the Reactor_Impl
Implements ACE_Reactor_Notify.
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Dump the state of an object.
Implements ACE_Reactor_Notify.
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Called back by the ACE_Select_Reactor when a thread wants to unblock us.
Reimplemented from ACE_Event_Handler.
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Verify whether the buffer has dispatchable info or not.
Implements ACE_Reactor_Notify.
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Set the maximum number of times that the ACE_Select_Reactor_Notify::handle_input() method will iterate and dispatch the ACE_Event_Handlers that are passed in via the notify pipe before breaking out of its recv
loop. By default, this is set to -1, which means "iterate until the pipe is empty." Setting this to a value like "1 or 2" will increase "fairness" (and thus prevent starvation) at the expense of slightly higher dispatching overhead.
Implements ACE_Reactor_Notify.
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Get the maximum number of times that the ACE_Select_Reactor_Notify::handle_input() method will iterate and dispatch the ACE_Event_Handlers that are passed in via the notify pipe before breaking out of its recv loop.
Implements ACE_Reactor_Notify.
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Called by a thread when it wants to unblock the ACE_Select_Reactor. This wakeups the ACE_Select_Reactor if currently blocked in select/poll
. Pass over both the Event_Handler
and the mask
to allow the caller to dictate which Event_Handler
method the ACE_Select_Reactor will invoke. The ACE_Time_Value indicates how long to blocking trying to notify the ACE_Select_Reactor. If timeout == 0, the caller will block until action is possible, else will wait until the relative time specified in *timeout
elapses).
Implements ACE_Reactor_Notify.
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Returns the ACE_HANDLE of the notify pipe on which the reactor is listening for notifications so that other threads can unblock the Select_Reactor
Implements ACE_Reactor_Notify.
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Initialize.
Implements ACE_Reactor_Notify.
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Purge any notifications pending in this reactor for the specified ACE_Event_Handler object. If eh == 0, all notifications for all handlers are removed (but not any notifications posted just to wake up the reactor itself). Returns the number of notifications purged. Returns -1 on error.
Implements ACE_Reactor_Notify.
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Read one of the notify call on the handle into the buffer. This could be because of a thread trying to unblock the Reactor_Impl
Return value semantics for this are: -1: nothing read, fatal, unrecoverable error 0: nothing read at all 1: complete buffer read
Implements ACE_Reactor_Notify.
ACE_Select_Reactor_Notify::ACE_ALLOC_HOOK_DECLARE |
Declare the dynamic allocation hooks.
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protected |
Keeps track of the maximum number of times that the ACE_Select_Reactor_Notify::handle_input() method will iterate and dispatch the ACE_Event_Handlers that are passed in via the notify pipe before breaking out of its recv loop. By default, this is set to -1, which means "iterate until the pipe is empty."
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Contains the ACE_HANDLE the ACE_Select_Reactor is listening on, as well as the ACE_HANDLE that threads wanting the attention of the ACE_Select_Reactor will write to.
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Keep a back pointer to the ACE_Select_Reactor. If this value if NULL then the ACE_Select_Reactor has been initialized with disable_notify_pipe.