#include <semdata.h>

Data Fields
Objects_Control	Object

union {
Thread_queue_Control Wait_queue
	The thread queue present in all other variants.

CORE_ceiling_mutex_Control Mutex

CORE_semaphore_Control Semaphore

}	Core_control

unsigned int	variant: 3
	The semaphore variant. More...

unsigned int	discipline: 1
	The semaphore thread queue discipline. More...

Detailed Description

The following defines the control block used to manage each semaphore.

Field Documentation

◆ Core_control

union { ... } Semaphore_Control::Core_control

This contains the memory associated with the SuperCore Semaphore or Mutex instance that provides the primary functionality of each Classic API Semaphore instance. The structure used is dependent on the attributes specified by the user on the create directive.

Note: Only one of these has meaning in a particular Classic API Semaphore instance.

◆ discipline

unsigned int Semaphore_Control::discipline

The semaphore thread queue discipline.

See also: Semaphore_Discipline.

◆ Mutex

CORE_ceiling_mutex_Control Semaphore_Control::Mutex

This is the SuperCore Mutex instance associated with this Classic API Semaphore instance.

◆ Object

Objects_Control Semaphore_Control::Object

This field is the object management portion of a Semaphore instance.

◆ Semaphore

CORE_semaphore_Control Semaphore_Control::Semaphore

This is the SuperCore Semaphore instance associated with this Classic API Semaphore instance.

◆ variant

unsigned int Semaphore_Control::variant

The semaphore variant.

See also: Semaphore_Variant.

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

cpukit/include/rtems/rtems/semdata.h

Data Fields