Semaphore Manager

This group contains the Semaphore Manager implementation. More...

Topics
	Semaphore Manager Multiprocessing (MP) Support
	This group contains the implementation to support the Semaphore Manager in multiprocessing (MP) configurations.

Files
file	cpukit/include/rtems/rtems/sem.h
	This header file defines the Semaphore Manager API.
file	cpukit/include/rtems/rtems/semdata.h
	This header file provides data structures used by the implementation and the Application Configuration to define _Semaphore_Information.
file	cpukit/include/rtems/rtems/semimpl.h
	This header file provides the implementation interfaces of the Semaphore Manager.
file	cpukit/rtems/src/sem.c
	This source file contains a definition of the _Semaphore_Information with zero objects.
file	cpukit/rtems/src/semcreate.c
	This source file contains the implementation of rtems_semaphore_create() and the Semaphore Manager system initialization.
file	cpukit/rtems/src/semdelete.c
	This source file contains the implementation of rtems_semaphore_delete().
file	cpukit/rtems/src/semflush.c
	This source file contains the implementation of rtems_semaphore_flush().
file	cpukit/rtems/src/semident.c
	This source file contains the implementation of rtems_semaphore_ident().
file	cpukit/rtems/src/semobtain.c
	This source file contains the implementation of rtems_semaphore_obtain().
file	cpukit/rtems/src/semrelease.c
	This source file contains the implementation of rtems_semaphore_release().
file	cpukit/rtems/src/semsetpriority.c
	This source file contains the implementation of rtems_semaphore_set_priority().

Data Structures
struct	Semaphore_Control
union	Semaphore_Control::[union].Core_control

Macros
#define	SEMAPHORE_INFORMATION_DEFINE(max, scheduler_count)
	Macro to define the objects information for the Classic Semaphore objects.

Enumerations
enum	Semaphore_Variant {   SEMAPHORE_VARIANT_MUTEX_INHERIT_PRIORITY , SEMAPHORE_VARIANT_MUTEX_PRIORITY_CEILING , SEMAPHORE_VARIANT_MUTEX_NO_PROTOCOL , SEMAPHORE_VARIANT_SIMPLE_BINARY ,   SEMAPHORE_VARIANT_COUNTING }
	Classic semaphore variants. More...
enum	Semaphore_Discipline { SEMAPHORE_DISCIPLINE_PRIORITY , SEMAPHORE_DISCIPLINE_FIFO }

Variables
Objects_Information	_Semaphore_Information
	The Classic Semaphore objects information.

Detailed Description

This group contains the Semaphore Manager implementation.

Macro Definition Documentation

SEMAPHORE_INFORMATION_DEFINE

#define SEMAPHORE_INFORMATION_DEFINE	(		max,
			scheduler_count )

Value:

OBJECTS_INFORMATION_DEFINE( \
  _Semaphore, \
  OBJECTS_CLASSIC_API, \
  OBJECTS_RTEMS_SEMAPHORES, \
  Semaphore_Control, \
  max, \
  OBJECTS_NO_STRING_NAME, \
  _Semaphore_MP_Send_extract_proxy \
)

Macro to define the objects information for the Classic Semaphore objects.

This macro should only be used by <rtems/confdefs.h>.

Parameters

max	The configured object maximum (the OBJECTS_UNLIMITED_OBJECTS flag may be set).
scheduler_count	The configured scheduler count (only used in SMP configurations).

Enumeration Type Documentation

Semaphore_Variant

enum Semaphore_Variant

Classic semaphore variants.

Must be in synchronization with Semaphore_Control::variant.