Semaphore Manager Implementation

Files
file	semdata.h
	Classic Semaphore Manager Data Structures.
file	semimpl.h
	Classic Semaphore Manager Implementation.
file	semident.c
	rtems_semaphore_ident() Implementation

Classes
struct	Semaphore_Control

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

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, SEMAPHORE_VARIANT_MRSP }
	Classic semaphore variants. More...
enum	Semaphore_Discipline { SEMAPHORE_DISCIPLINE_PRIORITY, SEMAPHORE_DISCIPLINE_FIFO }

Functions
static __inline__ uintptr_t	_Semaphore_Get_flags (const Semaphore_Control *the_semaphore)
static __inline__ void	_Semaphore_Set_flags (Semaphore_Control *the_semaphore, uintptr_t flags)
static __inline__ Semaphore_Variant	_Semaphore_Get_variant (uintptr_t flags)
static __inline__ uintptr_t	_Semaphore_Set_variant (uintptr_t flags, Semaphore_Variant variant)
static __inline__ Semaphore_Discipline	_Semaphore_Get_discipline (uintptr_t flags)
static __inline__ uintptr_t	_Semaphore_Set_discipline (uintptr_t flags, Semaphore_Discipline discipline)
static __inline__ const Thread_queue_Operations *	_Semaphore_Get_operations (uintptr_t flags)
static __inline__ Semaphore_Control *	_Semaphore_Allocate (void)
	Allocates a semaphore control block from the inactive chain of free semaphore control blocks. More...
static __inline__ void	_Semaphore_Free (Semaphore_Control *the_semaphore)
	Frees a semaphore control block to the inactive chain of free semaphore control blocks. More...
static __inline__ Semaphore_Control *	_Semaphore_Get (Objects_Id id, Thread_queue_Context *queue_context)

Variables
Objects_Information	_Semaphore_Information
	The Classic Semaphore objects information.

Detailed Description

Macro Definition Documentation

SEMAPHORE_INFORMATION_DEFINE

#define SEMAPHORE_INFORMATION_DEFINE	(		max,
			scheduler_count
	)

Value:

typedef union { \
    Objects_Control Object; \
    Semaphore_Control Semaphore; \
    struct { \
      Objects_Control Object; \
      MRSP_Control Control; \
      Priority_Control ceiling_priorities[ scheduler_count ]; \
    } MRSP; \
  } Semaphore_Configured_control; \
  OBJECTS_INFORMATION_DEFINE( \
    _Semaphore, \
    OBJECTS_CLASSIC_API, \
    OBJECTS_RTEMS_SEMAPHORES, \
    Semaphore_Configured_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).

Definition at line 116 of file semdata.h.

Enumeration Type Documentation

Semaphore_Variant

enum Semaphore_Variant

Classic semaphore variants.

Must be in synchronization with Semaphore_Control::variant.

Definition at line 42 of file semimpl.h.

Function Documentation

_Semaphore_Allocate()

static __inline__ Semaphore_Control* _Semaphore_Allocate ( void  )

static

Allocates a semaphore control block from the inactive chain of free semaphore control blocks.

This function allocates a semaphore control block from the inactive chain of free semaphore control blocks.

Definition at line 144 of file semimpl.h.

_Semaphore_Free()

static __inline__ void _Semaphore_Free ( Semaphore_Control *  the_semaphore )

static

Frees a semaphore control block to the inactive chain of free semaphore control blocks.

This routine frees a semaphore control block to the inactive chain of free semaphore control blocks.

Definition at line 156 of file semimpl.h.