UCommon
Public Member Functions | Static Public Member Functions | Protected Member Functions
ucommon::TimedEvent Class Reference

Event notification to manage scheduled realtime threads. More...

#include <thread.h>

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Public Member Functions

void reset (void)
 Reset triggered conditional.
void signal (void)
 Signal pending event.
 TimedEvent (void)
 Create event handler and timer for timing of events.
 TimedEvent (timeout_t timeout)
 Create event handler and timer set to trigger a timeout.
 TimedEvent (time_t timeout)
 Create event handler and timer set to trigger a timeout.
bool wait (timeout_t timeout)
 Wait to be signalled or until timer expires.
void wait (void)
 A simple wait until triggered.
 ~TimedEvent ()
 Destroy timer and release pending events.

Static Public Member Functions

static void reset (TimedEvent &timed)
 Event function to reset timer for external type.
static void signal (TimedEvent &timed)
 Event function for external type.
static bool wait (TimedEvent &timed, timeout_t timeout)
 Event function for external type for waiting.

Protected Member Functions

void lock (void)
 Lock the object for wait or to manipulate derived data.
void release (void)
 Release the object lock after waiting.
bool sync (void)
 Wait while locked.

Detailed Description

Event notification to manage scheduled realtime threads.

The timer is advanced to sleep threads which then wakeup either when the timer has expired or they are notified through the signal handler. This can be used to schedule and signal one-time completion handlers or for time synchronized events signaled by an asychrononous I/O or event source.

Author:
David Sugar <dyfet@gnutelephony.org>

Definition at line 365 of file thread.h.


Constructor & Destructor Documentation

Create event handler and timer set to trigger a timeout.

Parameters:
timeoutin milliseconds.
ucommon::TimedEvent::TimedEvent ( time_t  timeout)

Create event handler and timer set to trigger a timeout.

Parameters:
timeoutin seconds.

Member Function Documentation

void ucommon::TimedEvent::lock ( void  ) [protected]

Lock the object for wait or to manipulate derived data.

This is relevant to manipulations in a derived class.

void ucommon::TimedEvent::release ( void  ) [protected]

Release the object lock after waiting.

This is relevent to manipulations in a derived class.

static void ucommon::TimedEvent::reset ( TimedEvent timed) [inline, static]

Event function to reset timer for external type.

Parameters:
timedevent object to reset.

Definition at line 457 of file thread.h.

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void ucommon::TimedEvent::signal ( void  )

Signal pending event.

Object may be locked or unlocked. The signalling thread may choose to lock and check a condition in a derived class before signalling.

static void ucommon::TimedEvent::signal ( TimedEvent timed) [inline, static]

Event function for external type.

Parameters:
timedevent object to signal.

Definition at line 450 of file thread.h.

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bool ucommon::TimedEvent::sync ( void  ) [protected]

Wait while locked.

This can be used in more complex derived objects where we are concerned with synchronized access between the signaling and event thread. This can be used in place of wait, but lock and release methods must be used around it.

Returns:
true if time expired.

Wait to be signalled or until timer expires.

This is a wrapper for expire for simple completion events.

Parameters:
timeoutto wait from last reset.
Returns:
true if signaled, false if timeout.
static bool ucommon::TimedEvent::wait ( TimedEvent timed,
timeout_t  timeout 
) [inline, static]

Event function for external type for waiting.

Parameters:
timedevent object to wait on.
timeoutto wait from last reset.
Returns:
true if signalled, false if timeout.

Definition at line 466 of file thread.h.

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