This group contains the Object Handler implementation. More...

Modules
	Object Handler Multiprocessing (MP) Support
	This group contains the implementation to support the Object Handler in multiprocessing (MP) configurations.

Files
file	object.h
	This header file provides interfaces of the Object Handler which are used by the implementation and the Application Configuration.

file	objectdata.h
	This header file provides data structures used by the implementation and the Application Configuration to define instances of Objects_Information, ::_Objects_MP_Controls, and ultimately Thread_Configured_control.

file	objectimpl.h
	This header file provides interfaces of the Object Handler which are only used by the implementation.

file	objectactivecount.c
	This source file contains the implementation of _Objects_Active_count().

file	objectallocate.c
	This source file contains the implementation of _Objects_Allocate().

file	objectallocatenone.c
	This source file contains the implementation of _Objects_Allocate_none().

file	objectallocatestatic.c
	This source file contains the implementation of _Objects_Allocate_static().

file	objectallocateunlimited.c
	This source file contains the implementation of _Objects_Allocate_unlimited().

file	objectapimaximumclass.c
	This source file contains the implementation of _Objects_API_maximum_class().

file	objectclose.c
	This source file contains the implementation of _Objects_Close().

file	objectextendinformation.c
	This source file contains the implementation of _Objects_Extend_information().

file	objectfree.c
	This source file contains the implementation of _Objects_Free_unlimited().

file	objectfreenothing.c
	This source file contains the implementation of _Objects_Free_nothing().

file	objectfreestatic.c
	This source file contains the implementation of _Objects_Free_static().

file	objectgetinfo.c
	This source file contains the implementation of _Objects_Get_information().

file	objectgetinfoid.c
	This source file contains the implementation of _Objects_Get_information_id().

file	objectgetlocal.c
	This source file contains the implementation of _Objects_Get().

file	objectgetnameasstring.c
	This source file contains the implementation of _Objects_Name_to_string() and _Objects_Get_name_as_string().

file	objectgetnext.c
	This source file contains the implementation of _Objects_Get_next().

file	objectgetnoprotection.c
	This source file contains the implementation of _Objects_Get_no_protection().

file	objectidtoname.c
	This source file contains the implementation of _Objects_Id_to_name().

file	objectinitializeinformation.c
	This source file contains the implementation of _Objects_Initialize_information().

file	objectnamespaceremove.c
	This source file contains the implementation of _Objects_Namespace_remove_string().

file	objectnametoid.c
	This source file contains the implementation of _Objects_Name_to_id_u32().

file	objectnametoidstring.c
	This source file contains the implementation of _Objects_Get_by_name().

file	objectsetname.c
	This source file contains the implementation of _Objects_Set_name().

file	objectshrinkinformation.c
	This source file contains the implementation of _Objects_Free_objects_block() and _Objects_Shrink_information().

Data Structures
union	Objects_Name

struct	Objects_Control

struct	Objects_Information
	The information structure used to manage each API class of objects. More...

Macros
#define	OBJECTS_INDEX_START_BIT 0U

#define	OBJECTS_NODE_START_BIT 16U

#define	OBJECTS_API_START_BIT 24U

#define	OBJECTS_CLASS_START_BIT 27U

#define	OBJECTS_INDEX_MASK (Objects_Id)0x0000ffffU

#define	OBJECTS_NODE_MASK (Objects_Id)0x00ff0000U

#define	OBJECTS_API_MASK (Objects_Id)0x07000000U

#define	OBJECTS_CLASS_MASK (Objects_Id)0xf8000000U

#define	OBJECTS_INDEX_VALID_BITS (Objects_Id)0x0000ffffU

#define	OBJECTS_NODE_VALID_BITS (Objects_Id)0x000000ffU

#define	OBJECTS_API_VALID_BITS (Objects_Id)0x00000007U

#define	OBJECTS_CLASS_VALID_BITS (Objects_Id)0x0000001fU

#define	OBJECTS_UNLIMITED_OBJECTS 0x80000000U

#define	OBJECTS_ID_INITIAL_INDEX (0)

#define	OBJECTS_ID_FINAL_INDEX (0xffffU)

#define	OBJECTS_APIS_LAST OBJECTS_POSIX_API

#define	OBJECTS_ID_NONE 0

#define	OBJECTS_ID_OF_SELF ((Objects_Id) 0)

#define	OBJECTS_SEARCH_ALL_NODES 0

#define	OBJECTS_SEARCH_OTHER_NODES 0x7FFFFFFE

#define	OBJECTS_SEARCH_LOCAL_NODE 0x7FFFFFFF

#define	OBJECTS_WHO_AM_I 0

#define	OBJECTS_ID_INITIAL(_api, _class, _node) _Objects_Build_id( (_api), (_class), (_node), OBJECTS_ID_INITIAL_INDEX )

#define	OBJECTS_ID_FINAL ((Objects_Id)~0)

#define	_Objects_Build_name(_C1, _C2, _C3, _C4)

#define	_Objects_Build_id(the_api, the_class, node, index)
	Builds an object ID from its components. More...

#define	_Objects_Is_unlimited(maximum) ( ( ( maximum ) & OBJECTS_UNLIMITED_OBJECTS ) != 0 )

#define	_Objects_Maximum_per_allocation(maximum) ((Objects_Maximum) ((maximum) & ~OBJECTS_UNLIMITED_OBJECTS))

#define	_Objects_Local_node ((uint16_t) 1)
	The local MPCI node number.

#define	OBJECTS_NO_STRING_NAME 0
	Constant for the object information string name length to indicate that this object class has no string names.

#define	OBJECTS_INFORMATION_MP(name, extract)

#define	OBJECTS_INFORMATION_DEFINE_ZERO(name, api, cls, nl)
	Statically initializes an objects information. More...

#define	OBJECTS_INFORMATION_DEFINE(name, api, cls, type, max, nl, ex)
	Statically initializes an objects information. More...

#define	OBJECTS_INTERNAL_CLASSES_LAST OBJECTS_INTERNAL_THREADS

#define	OBJECTS_RTEMS_CLASSES_LAST OBJECTS_RTEMS_BARRIERS

#define	OBJECTS_POSIX_CLASSES_LAST OBJECTS_POSIX_SHMS

#define	_Objects_Maximum_nodes 1

#define	OBJECTS_INDEX_MINIMUM 1U

Typedefs
typedef uint32_t	Objects_Id

typedef uint16_t	Objects_Maximum

typedef struct Objects_Information	Objects_Information

typedef bool(*	Objects_Name_comparators) (void , void , uint16_t)

Enumerations
enum	Objects_APIs { OBJECTS_NO_API = 0 , OBJECTS_INTERNAL_API = 1 , OBJECTS_CLASSIC_API = 2 , OBJECTS_POSIX_API = 3 , OBJECTS_FAKE_OBJECTS_API = 7 }

enum	Objects_Internal_API { OBJECTS_INTERNAL_NO_CLASS = 0 , OBJECTS_INTERNAL_THREADS = 1 }

enum	Objects_Classic_API { OBJECTS_CLASSIC_NO_CLASS = 0 , OBJECTS_RTEMS_TASKS = 1 , OBJECTS_RTEMS_TIMERS , OBJECTS_RTEMS_SEMAPHORES , OBJECTS_RTEMS_MESSAGE_QUEUES , OBJECTS_RTEMS_PARTITIONS , OBJECTS_RTEMS_REGIONS , OBJECTS_RTEMS_PORTS , OBJECTS_RTEMS_PERIODS , OBJECTS_RTEMS_EXTENSIONS , OBJECTS_RTEMS_BARRIERS }

enum	Objects_POSIX_API { OBJECTS_POSIX_NO_CLASS = 0 , OBJECTS_POSIX_THREADS = 1 , OBJECTS_POSIX_KEYS , OBJECTS_POSIX_MESSAGE_QUEUES , OBJECTS_POSIX_SEMAPHORES , OBJECTS_POSIX_TIMERS , OBJECTS_POSIX_SHMS }

enum	Objects_Fake_objects_API { OBJECTS_FAKE_OBJECTS_NO_CLASS = 0 , OBJECTS_FAKE_OBJECTS_SCHEDULERS = 1 }

enum	Objects_Get_by_name_error { OBJECTS_GET_BY_NAME_INVALID_NAME , OBJECTS_GET_BY_NAME_NAME_TOO_LONG , OBJECTS_GET_BY_NAME_NO_OBJECT }

Functions
Objects_Control *	_Objects_Allocate_none (Objects_Information *information)
	Always return NULL. More...

Objects_Control *	_Objects_Allocate_static (Objects_Information *information)
	Return an inactive object or NULL. More...

Objects_Control *	_Objects_Allocate_unlimited (Objects_Information *information)
	Return an inactive object or NULL. More...

void	_Objects_Free_static (Objects_Information information, Objects_Control the_object)
	Free the object. More...

void	_Objects_Free_unlimited (Objects_Information information, Objects_Control the_object)
	Free the object. More...

Objects_Maximum	_Objects_Extend_information (Objects_Information *information)
	Extends an object class information record. More...

void	_Objects_Free_objects_block (Objects_Information *information, Objects_Maximum block)
	Free the objects block with the specified index. More...

void	_Objects_Shrink_information (Objects_Information *information)
	Shrinks an object class information record. More...

void	_Objects_Initialize_information (Objects_Information *information)
	Initializes the specified objects information. More...

unsigned int	_Objects_API_maximum_class (uint32_t api)
	Returns highest numeric value of a valid API for the specified API. More...

Objects_Control *	_Objects_Allocate (Objects_Information *information)
	Allocates an object. More...

Status_Control	_Objects_Name_to_id_u32 (uint32_t name, uint32_t node, Objects_Id id, const Objects_Information information)
	Searches an object of the specified class with the specified name on the specified set of nodes. More...

Objects_Control *	_Objects_Get_by_name (const Objects_Information information, const char name, size_t name_length_p, Objects_Get_by_name_error error)
	Gets an object control block identified by its name. More...

Status_Control	_Objects_Id_to_name (Objects_Id id, Objects_Name *name)
	Returns the name associated with object id. More...

Objects_Control *	_Objects_Get (Objects_Id id, ISR_lock_Context lock_context, const Objects_Information information)
	Maps the specified object identifier to the associated local object control block. More...

Objects_Control *	_Objects_Get_no_protection (Objects_Id id, const Objects_Information *information)
	Maps object ids to object control blocks. More...

Objects_Control *	_Objects_Get_next (Objects_Id id, const Objects_Information information, Objects_Id next_id_p)
	Gets the next open object after the specified object identifier. More...

Objects_Information *	_Objects_Get_information (Objects_APIs the_api, uint16_t the_class)
	Gets object information. More...

Objects_Information *	_Objects_Get_information_id (Objects_Id id)
	Gets information of an object from an ID. More...

char *	_Objects_Get_name_as_string (Objects_Id id, size_t length, char *name)
	Gets object name in the form of a C string. More...

size_t	_Objects_Name_to_string (Objects_Name name, bool is_string, char *buffer, size_t buffer_size)
	Converts the specified object name to a text representation. More...

Status_Control	_Objects_Set_name (const Objects_Information information, Objects_Control the_object, const char *name)
	Sets objects name. More...

void	_Objects_Namespace_remove_string (const Objects_Information information, Objects_Control the_object)
	Removes object with a string name from its namespace. More...

void	_Objects_Close (const Objects_Information information, Objects_Control the_object)
	Closes object. More...

Objects_Maximum	_Objects_Active_count (const Objects_Information *information)
	Returns the count of active objects. More...

void	_Objects_Free_nothing (void *ptr)
	This function does nothing. More...

Variables
Objects_Information **const	_Objects_Information_table [OBJECTS_APIS_LAST+1]

Detailed Description

This group contains the Object Handler implementation.

This handler provides mechanisms which can be used to initialize and manipulate all objects which have identifiers.

Macro Definition Documentation

◆ _Objects_Build_id

#define _Objects_Build_id	(	the_api,
		the_class,
		node,
		index
	)

Value:

  ( (Objects_Id) ( (Objects_Id) the_api   << OBJECTS_API_START_BIT )   | \
                 ( (Objects_Id) the_class << OBJECTS_CLASS_START_BIT ) | \
                 ( (Objects_Id) node      << OBJECTS_NODE_START_BIT )  | \
                 ( (Objects_Id) index     << OBJECTS_INDEX_START_BIT ) )

Builds an object ID from its components.

Parameters

the_api	The object API.
the_class	The object API class.
node	The object node.
index	The object index.

Returns: Returns the object ID constructed from the arguments.

◆ _Objects_Build_name

#define _Objects_Build_name	(	_C1,
		_C2,
		_C3,
		_C4
	)

Value:

  ( (uint32_t) (uint8_t) (_C1) << 24 | \
    (uint32_t) (uint8_t) (_C2) << 16 | \
    (uint32_t) (uint8_t) (_C3) << 8 | \
    (uint8_t) (_C4) )

This macro is used to build a thirty-two bit style name from four characters. The most significant byte will be the character _C1.

Parameters

[in]	_C1	is the first character of the name
[in]	_C2	is the second character of the name
[in]	_C3	is the third character of the name
[in]	_C4	is the fourth character of the name

◆ _Objects_Is_unlimited

#define _Objects_Is_unlimited ( maximum ) ( ( ( maximum ) & OBJECTS_UNLIMITED_OBJECTS ) != 0 )

Returns if the object maximum specifies unlimited objects.

Parameters

[in] maximum The object maximum specification.

Return values

true	Unlimited objects are available.
false	The object count is fixed.

◆ _Objects_Maximum_nodes

#define _Objects_Maximum_nodes 1

The following is referenced to the number of nodes in the system.

◆ OBJECTS_API_MASK

#define OBJECTS_API_MASK (Objects_Id)0x07000000U

This mask is used to extract the API portion of an object Id.

◆ OBJECTS_API_START_BIT

#define OBJECTS_API_START_BIT 24U

This is the bit position of the starting bit of the API portion of the object Id.

◆ OBJECTS_API_VALID_BITS

#define OBJECTS_API_VALID_BITS (Objects_Id)0x00000007U

This mask represents the bits that is used to ensure no extra bits are set after shifting to extract the API portion of an object Id.

◆ OBJECTS_APIS_LAST

#define OBJECTS_APIS_LAST OBJECTS_POSIX_API

This macro is used to generically specify the last API index.

◆ OBJECTS_CLASS_MASK

#define OBJECTS_CLASS_MASK (Objects_Id)0xf8000000U

This mask is used to extract the class portion of an object Id.

◆ OBJECTS_CLASS_START_BIT

#define OBJECTS_CLASS_START_BIT 27U

This is the bit position of the starting bit of the class portion of the object Id.

◆ OBJECTS_CLASS_VALID_BITS

#define OBJECTS_CLASS_VALID_BITS (Objects_Id)0x0000001fU

This mask represents the bits that is used to ensure no extra bits are set after shifting to extract the class portion of an object Id.

◆ OBJECTS_ID_FINAL

#define OBJECTS_ID_FINAL ((Objects_Id)~0)

This macro specifies the highest object ID value

◆ OBJECTS_ID_FINAL_INDEX

#define OBJECTS_ID_FINAL_INDEX (0xffffU)

This is the highest value for the index portion of an object Id.

◆ OBJECTS_ID_INITIAL

#define OBJECTS_ID_INITIAL	(	_api,
		_class,
		_node
	)	_Objects_Build_id( (_api), (_class), (_node), OBJECTS_ID_INITIAL_INDEX )

This macros calculates the lowest ID for the specified api, class, and node.

◆ OBJECTS_ID_INITIAL_INDEX

#define OBJECTS_ID_INITIAL_INDEX (0)

This is the lowest value for the index portion of an object Id.

◆ OBJECTS_ID_NONE

#define OBJECTS_ID_NONE 0

No object can have this ID.

◆ OBJECTS_ID_OF_SELF

#define OBJECTS_ID_OF_SELF ((Objects_Id) 0)

The following defines the constant which may be used to manipulate the calling task.

◆ OBJECTS_INDEX_MASK

#define OBJECTS_INDEX_MASK (Objects_Id)0x0000ffffU

This mask is used to extract the index portion of an object Id.

◆ OBJECTS_INDEX_MINIMUM

#define OBJECTS_INDEX_MINIMUM 1U

This is the minimum object ID index associated with an object.

◆ OBJECTS_INDEX_START_BIT

#define OBJECTS_INDEX_START_BIT 0U

This is the bit position of the starting bit of the index portion of the object Id.

◆ OBJECTS_INDEX_VALID_BITS

#define OBJECTS_INDEX_VALID_BITS (Objects_Id)0x0000ffffU

This mask represents the bits that is used to ensure no extra bits are set after shifting to extract the index portion of an object Id.

◆ OBJECTS_INFORMATION_DEFINE

#define OBJECTS_INFORMATION_DEFINE	(	name,
		api,
		cls,
		type,
		max,
		nl,
		ex
	)

Value:

static Objects_Control * \
name##_Local_table[ _Objects_Maximum_per_allocation( max ) ]; \
static RTEMS_SECTION( ".noinit.rtems.content.objects." #name ) \
type \
name##_Objects[ _Objects_Maximum_per_allocation( max ) ]; \
Objects_Information name##_Information = { \
  _Objects_Build_id( api, cls, 1, _Objects_Maximum_per_allocation( max ) ), \
  name##_Local_table, \
  _Objects_Is_unlimited( max ) ? \
    _Objects_Allocate_unlimited : _Objects_Allocate_static, \
  _Objects_Is_unlimited( max ) ? \
    _Objects_Free_unlimited : _Objects_Free_static, \
  0, \
  _Objects_Is_unlimited( max ) ? _Objects_Maximum_per_allocation( max ) : 0, \
  sizeof( type ), \
  nl, \
  CHAIN_INITIALIZER_EMPTY( name##_Information.Inactive ), \
  NULL, \
  NULL, \
  &name##_Objects[ 0 ].Object \
  OBJECTS_INFORMATION_MP( name##_Information, ex ) \
}

Statically initializes an objects information.

The initialized objects information references a table with statically allocated objects as specified by the object maximum parameter. These objects must be registered via a call to _Objects_Information().

Parameters

name	The object class C designator namespace prefix, e.g. _Semaphore.
api	The object API number, e.g. OBJECTS_CLASSIC_API.
cls	The object class number, e.g. OBJECTS_RTEMS_SEMAPHORES.
type	The object class type.
max	The configured object maximum (the OBJECTS_UNLIMITED_OBJECTS flag may be set).
nl	The object name string length, use OBJECTS_NO_STRING_NAME for objects without a string name.
ex	The optional object extraction method. Used only if multiprocessing (RTEMS_MULTIPROCESSING) is enabled.

◆ OBJECTS_INFORMATION_DEFINE_ZERO

#define OBJECTS_INFORMATION_DEFINE_ZERO	(	name,
		api,
		cls,
		nl
	)

Value:

Objects_Information name##_Information = { \
  _Objects_Build_id( api, cls, 1, 0 ), \
  NULL, \
  _Objects_Allocate_none, \
  NULL, \
  0, \
  0, \
  0, \
  nl, \
  CHAIN_INITIALIZER_EMPTY( name##_Information.Inactive ), \
  NULL, \
  NULL, \
  NULL \
  OBJECTS_INFORMATION_MP( name##_Information, NULL ) \
}

Statically initializes an objects information.

The initialized objects information contains no objects.

Parameters

name	The object class C designator namespace prefix, e.g. _Semaphore.
api	The object API number, e.g. OBJECTS_CLASSIC_API.
cls	The object class number, e.g. OBJECTS_RTEMS_SEMAPHORES.
nl	The object name string length, use OBJECTS_NO_STRING_NAME for objects without a string name.

◆ OBJECTS_INTERNAL_CLASSES_LAST

#define OBJECTS_INTERNAL_CLASSES_LAST OBJECTS_INTERNAL_THREADS

This macro is used to generically specify the last API index.

◆ OBJECTS_NODE_MASK

#define OBJECTS_NODE_MASK (Objects_Id)0x00ff0000U

This mask is used to extract the node portion of an object Id.

◆ OBJECTS_NODE_START_BIT

#define OBJECTS_NODE_START_BIT 16U

This is the bit position of the starting bit of the node portion of the object Id.

◆ OBJECTS_NODE_VALID_BITS

#define OBJECTS_NODE_VALID_BITS (Objects_Id)0x000000ffU

This mask represents the bits that is used to ensure no extra bits are set after shifting to extract the node portion of an object Id.

◆ OBJECTS_POSIX_CLASSES_LAST

#define OBJECTS_POSIX_CLASSES_LAST OBJECTS_POSIX_SHMS

This macro is used to generically specify the last API index.

◆ OBJECTS_RTEMS_CLASSES_LAST

#define OBJECTS_RTEMS_CLASSES_LAST OBJECTS_RTEMS_BARRIERS

This macro is used to generically specify the last API index.

◆ OBJECTS_SEARCH_ALL_NODES

#define OBJECTS_SEARCH_ALL_NODES 0

The following constant is used to specify that a name to ID search should search through all nodes.

◆ OBJECTS_SEARCH_LOCAL_NODE

#define OBJECTS_SEARCH_LOCAL_NODE 0x7FFFFFFF

The following constant is used to specify that a name to ID search should search only on this node.

◆ OBJECTS_SEARCH_OTHER_NODES

#define OBJECTS_SEARCH_OTHER_NODES 0x7FFFFFFE

The following constant is used to specify that a name to ID search should search through all nodes except the current node.

◆ OBJECTS_UNLIMITED_OBJECTS

#define OBJECTS_UNLIMITED_OBJECTS 0x80000000U

Mask to enable unlimited objects. This is used in the configuration table when specifying the number of configured objects.

◆ OBJECTS_WHO_AM_I

#define OBJECTS_WHO_AM_I 0

The following constant is used to specify that a name to ID search is being asked for the ID of the currently executing task.

Typedef Documentation

◆ Objects_Id

typedef uint32_t Objects_Id

The following type defines the control block used to manage object IDs. The format is as follows (0=LSB):

Bits 0 .. 15 = index (up to 65535 objects of a type) Bits 16 .. 23 = node (up to 255 nodes) Bits 24 .. 26 = API (up to 7 API classes) Bits 27 .. 31 = class (up to 31 object types per API)

◆ Objects_Maximum

typedef uint16_t Objects_Maximum

This type is used to store the maximum number of allowed objects of each type.

◆ Objects_Name_comparators

typedef bool(* Objects_Name_comparators) (void *, void *, uint16_t)

Functions which compare names are prototyped like this.

Enumeration Type Documentation

◆ Objects_APIs

enum Objects_APIs

This enumerated type is used in the class field of the object ID.

◆ Objects_Classic_API

enum Objects_Classic_API

This enumerated type is used in the class field of the object ID for the RTEMS Classic API.

◆ Objects_Internal_API

enum Objects_Internal_API

This enumerated type is used in the class field of the object ID for RTEMS internal object classes.

◆ Objects_POSIX_API

enum Objects_POSIX_API

This enumerated type is used in the class field of the object ID for the POSIX API.

Function Documentation

◆ _Objects_Active_count()

Objects_Maximum _Objects_Active_count ( const Objects_Information * information )

Returns the count of active objects.

Parameters

information The object information table.

Returns: The count of active objects.

◆ _Objects_Allocate()

Objects_Control * _Objects_Allocate ( Objects_Information * information )

Allocates an object.

This function locks the object allocator mutex via _Objects_Allocator_lock(). The caller must later unlock the object allocator mutex via _Objects_Allocator_unlock(). The caller must unlock the mutex in any case, even if the allocation failed due to resource shortage.

A typical object allocation code looks like this:

rtems_status_code some_create( rtems_id *id )
{
  rtems_status_code  sc;
  Some_Control      *some;
 
  // The object allocator mutex protects the executing thread from
  // asynchronous thread restart and deletion.
  some = (Some_Control *) _Objects_Allocate( &_Some_Information );
 
  if ( some != NULL ) {
    _Some_Initialize( some );
    sc = RTEMS_SUCCESSFUL;
  } else {
    sc = RTEMS_TOO_MANY;
  }
 
  _Objects_Allocator_unlock();
 
  return sc;
}

Parameters

[in,out] information The object information block.

Return values

object	The allocated object.
NULL	No object available.

See also: _Objects_Free().

◆ _Objects_Allocate_none()

Objects_Control * _Objects_Allocate_none ( Objects_Information * information )

Always return NULL.

Parameters

information The objects information.

Return values

NULL Always.

◆ _Objects_Allocate_static()

Objects_Control * _Objects_Allocate_static ( Objects_Information * information )

Return an inactive object or NULL.

Parameters

information The objects information.

Return values

NULL	No inactive object is available.
object	An inactive object.

◆ _Objects_Allocate_unlimited()

Objects_Control * _Objects_Allocate_unlimited ( Objects_Information * information )

Return an inactive object or NULL.

Try to extend the objects information if necessary.

Parameters

information The objects information.

Return values

NULL	No inactive object is available.
object	An inactive object.

◆ _Objects_API_maximum_class()

unsigned int _Objects_API_maximum_class ( uint32_t api )

Returns highest numeric value of a valid API for the specified API.

This function returns the highest numeric value of a valid API for the specified api.

Parameters

api	The API of interest.

Return values

some_value	Positive integer on success.
0	The method failed.

◆ _Objects_Close()

void _Objects_Close	(	const Objects_Information *	information,
		Objects_Control *	the_object
	)

Closes object.

This function removes the_object control pointer and object name in the Local Pointer and Local Name Tables.

Parameters

	information	Points to an Object Information Table.
[out]	the_object	A pointer to an object.

◆ _Objects_Extend_information()

Objects_Maximum _Objects_Extend_information ( Objects_Information * information )

Extends an object class information record.

Parameters

information Points to an object class information block.

Return values

0	The extend operation failed.
block	The block index of the new objects block.

◆ _Objects_Free_nothing()

void _Objects_Free_nothing ( void * ptr )

This function does nothing.

Parameters

ptr	is not used.

◆ _Objects_Free_objects_block()

void _Objects_Free_objects_block	(	Objects_Information *	information,
		Objects_Maximum	block
	)

Free the objects block with the specified index.

Parameters

information	The objects information.
block	The block index.

◆ _Objects_Free_static()

void _Objects_Free_static	(	Objects_Information *	information,
		Objects_Control *	the_object
	)

Free the object.

Append the object to the inactive chain of the objects information.

Parameters

information	The objects information.
the_object	The object to free.

◆ _Objects_Free_unlimited()

void _Objects_Free_unlimited	(	Objects_Information *	information,
		Objects_Control *	the_object
	)

Free the object.

Append the object to the inactive chain of the objects information and shrink the objects information if necessary.

Parameters

information	The objects information.
the_object	The object to free.

◆ _Objects_Get()

Objects_Control * _Objects_Get	(	Objects_Id	id,
		ISR_lock_Context *	lock_context,
		const Objects_Information *	information
	)

Maps the specified object identifier to the associated local object control block.

In this function interrupts are disabled during the object lookup. In case an associated object exists, then interrupts remain disabled, otherwise the previous interrupt state is restored.

Parameters

id	The object identifier. This is the first parameter since usual callers get the object identifier as the first parameter themself.
lock_context	The interrupt lock context. This is the second parameter since usual callers get the interrupt lock context as the second parameter themself.
information	The object class information block.

Return values

pointer	The pointer to the associated object control block. Interrupts are now disabled and must be restored using the specified lock context via _ISR_lock_ISR_enable() or _ISR_lock_Release_and_ISR_enable().
NULL	No associated object exists.

◆ _Objects_Get_by_name()

Objects_Control * _Objects_Get_by_name	(	const Objects_Information *	information,
		const char *	name,
		size_t *	name_length_p,
		Objects_Get_by_name_error *	error
	)

Gets an object control block identified by its name.

The object information must use string names.

Parameters

	information	The object information. Must not be NULL.
	name	The object name.
[out]	name_length_p	Optional parameter to return the name length.
[out]	error	The error indication in case of failure. Must not be NULL.

Return values

pointer	The first object according to object index associated with this name.
NULL	No object exists for this name or invalid parameters.

◆ _Objects_Get_information()

Objects_Information * _Objects_Get_information	(	Objects_APIs	the_api,
		uint16_t	the_class
	)

Gets object information.

This function returns the information structure given an API and Class. This can be done independent of the existence of any objects created by the API.

Parameters

the_api	Indicates the API for the information we want
the_class	Indicates the Class for the information we want

Return values

pointer	Pointer to the Object Information Table for the class of objects which corresponds to this object ID.
NULL	An error occurred.

◆ _Objects_Get_information_id()

Objects_Information * _Objects_Get_information_id ( Objects_Id id )

Gets information of an object from an ID.

This function returns the information structure given an id of an object.

Parameters

id	The object ID to get the information from.

Return values

pointer	Pointer to the Object Information Table for the class of objects which corresponds to this object ID.
NULL	An error occurred.

◆ _Objects_Get_name_as_string()

char * _Objects_Get_name_as_string	(	Objects_Id	id,
		size_t	length,
		char *	name
	)

Gets object name in the form of a C string.

This method gets the name of an object and returns its name in the form of a C string. It attempts to be careful about overflowing the user's string and about returning unprintable characters.

Parameters

	id	The object to obtain the name of.
	length	Indicates the length of the caller's buffer.
[out]	name	A string which will be filled in.

Return values

a name The operation was succeeded and the string was correctly filled in.

Return values

NULL	An error occurred.

◆ _Objects_Get_next()

Objects_Control * _Objects_Get_next	(	Objects_Id	id,
		const Objects_Information *	information,
		Objects_Id *	next_id_p
	)

Gets the next open object after the specified object identifier.

Locks the object allocator mutex in case a next object exists.

Parameters

	id	The Id of the object whose name we are locating. This is the first parameter since usual callers get the object identifier as the first parameter themself.
	information	Points to an object class information block.
[in,out]	next_id_p	The Id of the next object we will look at.

Return values

pointer	Pointer to the located object.
NULL	An error occurred.

◆ _Objects_Get_no_protection()

Objects_Control * _Objects_Get_no_protection	(	Objects_Id	id,
		const Objects_Information *	information
	)

Maps object ids to object control blocks.

This function maps object ids to object control blocks. If id corresponds to a local object, then it returns the_object control pointer which maps to id and location is set to OBJECTS_LOCAL. If the object class supports global objects and the object id is global and resides on a remote node, then location is set to OBJECTS_REMOTE, and the_object is undefined. Otherwise, location is set to OBJECTS_ERROR and the_object is undefined.

Parameters

id	The Id of the object whose name we are locating. This is the first parameter since usual callers get the object identifier as the first parameter themself.
information	Points to an object class information block.

Return values

pointer	The local object corresponding to the given id.
NULL	The object to the given id was not found locally.

◆ _Objects_Id_to_name()

Status_Control _Objects_Id_to_name	(	Objects_Id	id,
		Objects_Name *	name
	)

Returns the name associated with object id.

This function implements the common portion of the object Id to name directives. This function returns the name associated with object id.

Parameters

	id	is the Id of the object whose name we are locating.
[out]	name	will contain the name of the object, if found.

Return values

STATUS_SUCCESSFUL	The operation succeeded. name contains the name of the object.
STATUS_INVALID_ID	The id is invalid, the operation failed.

Note: This function currently does not support string names.

◆ _Objects_Initialize_information()

void _Objects_Initialize_information ( Objects_Information * information )

Initializes the specified objects information.

The objects information must be statically pre-initialized with the OBJECTS_INFORMATION_DEFINE() macro before this function is called.

Parameters

information The object information to be initialized.

◆ _Objects_Name_to_id_u32()

Status_Control _Objects_Name_to_id_u32	(	uint32_t	name,
		uint32_t	node,
		Objects_Id *	id,
		const Objects_Information *	information
	)

Searches an object of the specified class with the specified name on the specified set of nodes.

This method converts an object name to an identifier. It performs a look up using the object information block for this object class.

Parameters

	name	is the name of the object to find.
	node	is the set of nodes to search.
[out]	id	is the pointer to an object identifier variable or NULL. The object identifier will be stored in the referenced variable, if the operation was successful.
	information	is the pointer to an object class information block.

Return values

STATUS_SUCCESSFUL	The operations was successful.
STATUS_INVALID_ADDRESS	The id parameter was NULL.
STATUS_INVALID_NAME	No object exists with the specified name on the specified node set.

◆ _Objects_Name_to_string()

size_t _Objects_Name_to_string	(	Objects_Name	name,
		bool	is_string,
		char *	buffer,
		size_t	buffer_size
	)

Converts the specified object name to a text representation.

Non-printable characters according to isprint() are converted to '*'.

Parameters

	name	The object name.
	is_string	Indicates if the object name is a string or a four character array (32-bit unsigned integer).
[out]	buffer	The string buffer for the text representation.
	buffer_size	The buffer size in characters.

Returns: The length of the text representation. May be greater than or equal to the buffer size if truncation occurred.

◆ _Objects_Namespace_remove_string()

void _Objects_Namespace_remove_string	(	const Objects_Information *	information,
		Objects_Control *	the_object
	)

Removes object with a string name from its namespace.

Parameters

	information	The corresponding object information table.
[out]	the_object	The object the object to operate upon.

◆ _Objects_Set_name()

Status_Control _Objects_Set_name	(	const Objects_Information *	information,
		Objects_Control *	the_object,
		const char *	name
	)

Sets objects name.

This method sets the object name to either a copy of a string or up to the first four characters of the string based upon whether this object class uses strings for names.

Parameters

	information	points to the object information.
[out]	the_object	is the object to operate upon.
	name	is a pointer to the name to use.

Return values

STATUS_SUCCESSFUL	The operation succeeded.
STATUS_NO_MEMORY	There was no memory available to duplicate the name.

◆ _Objects_Shrink_information()

void _Objects_Shrink_information ( Objects_Information * information )

Shrinks an object class information record.

This function shrinks an object class information record. The object's name and object space are released. The local_table etc block does not shrink. The InActive list needs to be scanned to find the objects are remove them.

Parameters

information Points to an object class information block.

Variable Documentation

◆ _Objects_Information_table

Objects_Information** const _Objects_Information_table[OBJECTS_APIS_LAST+1]

extern

The following is the list of information blocks per API for each object class. From the ID, we can go to one of these information blocks, and obtain a pointer to the appropriate object control block.

Modules

Files

Data Structures

Macros

Typedefs

Enumerations

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ _Objects_Build_id

◆ _Objects_Build_name

◆ _Objects_Is_unlimited

◆ _Objects_Maximum_nodes

◆ OBJECTS_API_MASK

◆ OBJECTS_API_START_BIT

◆ OBJECTS_API_VALID_BITS

◆ OBJECTS_APIS_LAST

◆ OBJECTS_CLASS_MASK

◆ OBJECTS_CLASS_START_BIT

◆ OBJECTS_CLASS_VALID_BITS

◆ OBJECTS_ID_FINAL

◆ OBJECTS_ID_FINAL_INDEX

◆ OBJECTS_ID_INITIAL

◆ OBJECTS_ID_INITIAL_INDEX

◆ OBJECTS_ID_NONE

◆ OBJECTS_ID_OF_SELF

◆ OBJECTS_INDEX_MASK

◆ OBJECTS_INDEX_MINIMUM

◆ OBJECTS_INDEX_START_BIT

◆ OBJECTS_INDEX_VALID_BITS

◆ OBJECTS_INFORMATION_DEFINE

◆ OBJECTS_INFORMATION_DEFINE_ZERO

◆ OBJECTS_INTERNAL_CLASSES_LAST

◆ OBJECTS_NODE_MASK

◆ OBJECTS_NODE_START_BIT

◆ OBJECTS_NODE_VALID_BITS

◆ OBJECTS_POSIX_CLASSES_LAST

◆ OBJECTS_RTEMS_CLASSES_LAST

◆ OBJECTS_SEARCH_ALL_NODES

◆ OBJECTS_SEARCH_LOCAL_NODE

◆ OBJECTS_SEARCH_OTHER_NODES

◆ OBJECTS_UNLIMITED_OBJECTS

◆ OBJECTS_WHO_AM_I

Typedef Documentation

◆ Objects_Id

◆ Objects_Maximum

◆ Objects_Name_comparators

Enumeration Type Documentation

◆ Objects_APIs

◆ Objects_Classic_API

◆ Objects_Internal_API

◆ Objects_POSIX_API

Function Documentation

◆ _Objects_Active_count()

◆ _Objects_Allocate()

◆ _Objects_Allocate_none()

◆ _Objects_Allocate_static()

◆ _Objects_Allocate_unlimited()

◆ _Objects_API_maximum_class()

◆ _Objects_Close()

◆ _Objects_Extend_information()

◆ _Objects_Free_nothing()

◆ _Objects_Free_objects_block()

◆ _Objects_Free_static()

◆ _Objects_Free_unlimited()

◆ _Objects_Get()

◆ _Objects_Get_by_name()

◆ _Objects_Get_information()

◆ _Objects_Get_information_id()

◆ _Objects_Get_name_as_string()

◆ _Objects_Get_next()

◆ _Objects_Get_no_protection()

◆ _Objects_Id_to_name()

◆ _Objects_Initialize_information()

◆ _Objects_Name_to_id_u32()

◆ _Objects_Name_to_string()

◆ _Objects_Namespace_remove_string()

◆ _Objects_Set_name()

◆ _Objects_Shrink_information()