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SoDelayQueueSensor Class Reference

The SoDelayQueueSensor class is the abstract base class for priority scheduled sensors. More...

#include <Inventor/sensors/SoDelayQueueSensor.h>

Inheritance diagram for SoDelayQueueSensor:
SoSensor SoDataSensor SoIdleSensor SoOneShotSensor SoFieldSensor SoNodeSensor SoPathSensor

Public Member Functions

 SoDelayQueueSensor (void)
 SoDelayQueueSensor (SoSensorCB *func, void *data)
virtual ~SoDelayQueueSensor (void)
void setPriority (uint32_t pri)
uint32_t getPriority (void) const
virtual void schedule (void)
virtual void unschedule (void)
virtual SbBool isScheduled (void) const
virtual SbBool isIdleOnly (void) const
virtual void trigger (void)
- Public Member Functions inherited from SoSensor
 SoSensor (void)
 SoSensor (SoSensorCB *func, void *data)
virtual ~SoSensor (void)
void setFunction (SoSensorCB *callbackfunction)
SoSensorCBPtr getFunction (void) const
void setData (void *callbackdata)
void * getData (void) const
void setNextInQueue (SoSensor *next)
SoSensorgetNextInQueue (void) const

Static Public Member Functions

static uint32_t getDefaultPriority (void)
- Static Public Member Functions inherited from SoSensor
static void initClass (void)

Protected Attributes

SbBool scheduled
- Protected Attributes inherited from SoSensor
void * funcData

Detailed Description

The SoDelayQueueSensor class is the abstract base class for priority scheduled sensors.

Delay queue sensors are invoked upon various events not related to time occurrences. See documentation of subclasses to see which types of events can be surveilled by the built-in sensor types.

The priority values can be used to queue events by their importance, so the sensors are triggered in the sequence you want.

The queue of delay sensors (i.e. instances of subclasses of SoDelayQueueSensor) will be processed as soon as either the runtime system is idle, or if it is continually busy they will be processed within a fixed amount of time.

This time interval is by default 1/12th of a second, but can be controlled with the SoSensorManager::setDelaySensorTimeout() interface.

Constructor & Destructor Documentation

◆ SoDelayQueueSensor() [1/2]

SoDelayQueueSensor::SoDelayQueueSensor ( void  )

Default constructor.

◆ SoDelayQueueSensor() [2/2]

SoDelayQueueSensor::SoDelayQueueSensor ( SoSensorCB func,
void *  data 

Constructor taking as arguments the sensor callback function and the userdata which will be passed to the callback.

See also
setFunction(), setData()

◆ ~SoDelayQueueSensor()

SoDelayQueueSensor::~SoDelayQueueSensor ( void  )


Member Function Documentation

◆ setPriority()

void SoDelayQueueSensor::setPriority ( uint32_t  pri)

Set this sensor's priority in the scheduling queue. When sensors are processed, high priority sensors will trigger before low priority sensors.

Please note that a low number means a high priority. A sensor with priority 5 will trigger before a sensor with priority 6.

Sensors with priority 0 have a special meaning in Coin/Inventor. They are called immediate sensors, and will trigger immediately after the current notification chain has finished. Priority 0 sensors should be used with care, since they might lead to bad performance if you do some processing in the sensor callback.

This setting does not affect SoDataSensor delete-callback invocations, which always are immediate.

See also
getPriority(), getDefaultPriority()

◆ getPriority()

uint32_t SoDelayQueueSensor::getPriority ( void  ) const

Returns sensor scheduling priority.

See also
setPriority(), getDefaultPriority()

◆ getDefaultPriority()

uint32_t SoDelayQueueSensor::getDefaultPriority ( void  )

Returns the default scheduling priority value. The default sensor priority is 100.

See also

◆ schedule()

void SoDelayQueueSensor::schedule ( void  )

Put the sensor in the global delay queue. This means it will be triggered either when the CPU is idle, or when the specified delay queue timeout is reached.

See also
SoDB::setDelaySensorTimeout(), unschedule(), isScheduled()

Implements SoSensor.

◆ unschedule()

void SoDelayQueueSensor::unschedule ( void  )

Remove sensor from the delay queue, without triggering it first.

See also
schedule(), isScheduled()

Implements SoSensor.

◆ isScheduled()

SbBool SoDelayQueueSensor::isScheduled ( void  ) const

Check if this sensor is scheduled for triggering.

See also
schedule(), unschedule()

Implements SoSensor.

◆ isIdleOnly()

SbBool SoDelayQueueSensor::isIdleOnly ( void  ) const

Returns a flag indicating whether or not the sensor should only be triggered if the application is truly idle, and not when the delay queue is processed because of the delay queue timeout.

See also

◆ trigger()

void SoDelayQueueSensor::trigger ( void  )

Trigger the sensor's callback function.

Reimplemented from SoSensor.

Reimplemented in SoDataSensor, and SoFieldSensor.

Member Data Documentation

◆ scheduled

SbBool SoDelayQueueSensor::scheduled

TRUE if the sensor is currently scheduled.

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