Collaboration diagram for Kernel Object Management:

Data Structures
struct	rt_object

struct	rt_object_information

Macros
#define	RT_OBJECT_FLAG_MODULE 0x80

#define	_RT_OBJECT_HOOK_CALL(func, argv) __ON_HOOK_ARGS(func, argv)

Typedefs
typedef struct rt_object *	rt_object_t

typedef rt_err_t(*	rt_object_iter_t) (rt_object_t object, void *data)

Enumerations
enum	rt_object_class_type { RT_Object_Class_Null = 0x00 , RT_Object_Class_Thread = 0x01 , RT_Object_Class_Semaphore = 0x02 , RT_Object_Class_Mutex = 0x03 , RT_Object_Class_Event = 0x04 , RT_Object_Class_MailBox = 0x05 , RT_Object_Class_MessageQueue = 0x06 , RT_Object_Class_MemHeap = 0x07 , RT_Object_Class_MemPool = 0x08 , RT_Object_Class_Device = 0x09 , RT_Object_Class_Timer = 0x0a , RT_Object_Class_Module = 0x0b , RT_Object_Class_Memory = 0x0c , RT_Object_Class_Channel = 0x0d , RT_Object_Class_ProcessGroup = 0x0e , RT_Object_Class_Session = 0x0f , RT_Object_Class_Custom = 0x10 , RT_Object_Class_Unknown = 0x11 , RT_Object_Class_Static = 0x80 }

Functions
struct rt_object_information *	rt_object_get_information (enum rt_object_class_type type)

int	rt_object_get_length (enum rt_object_class_type type)

int	rt_object_get_pointers (enum rt_object_class_type type, rt_object_t *pointers, int maxlen)

void	rt_object_init (struct rt_object object, enum rt_object_class_type type, const char name)

void	rt_object_detach (rt_object_t object)

rt_object_t	rt_object_allocate (enum rt_object_class_type type, const char *name)

void	rt_object_delete (rt_object_t object)

rt_bool_t	rt_object_is_systemobject (rt_object_t object)

rt_uint8_t	rt_object_get_type (rt_object_t object)

rt_err_t	rt_object_for_each (rt_uint8_t type, rt_object_iter_t iter, void *data)

rt_object_t	rt_object_find (const char *name, rt_uint8_t type)

rt_err_t	rt_object_get_name (rt_object_t object, char *name, rt_uint8_t name_size)

rt_object_t	rt_custom_object_create (const char name, void data, rt_err_t(data_destroy)(void ))

rt_err_t	rt_custom_object_destroy (rt_object_t obj)

Detailed Description

kernel object management

The Kernel object system can access and manage all of the kernel objects.

Kernel objects include most of the facilities in the kernel:

thread
semaphore and mutex
event/fast event, mailbox, messagequeue
memory pool
timer

Figure 2: Kernel Object

Kernel objects can be static objects, whose memory is allocated in compiling. It can be dynamic objects as well, whose memory is allocated from system heaps in runtime.

Macro Definition Documentation

◆ RT_OBJECT_FLAG_MODULE

#define RT_OBJECT_FLAG_MODULE 0x80

is module object.

◆ _RT_OBJECT_HOOK_CALL

#define _RT_OBJECT_HOOK_CALL	(	func,
		argv
	)	__ON_HOOK_ARGS(func, argv)

Add hook point in the routines.

The hook function call macro

Note: Usage: void foo() { do_something();

RT_OBJECT_HOOK_CALL(foo);

do_other_things(); }

Typedef Documentation

◆ rt_object_t

typedef struct rt_object* rt_object_t

Type for kernel objects.

◆ rt_object_iter_t

typedef rt_err_t(* rt_object_iter_t) (rt_object_t object, void *data)

iterator of rt_object_for_each()

data is the data passing in to rt_object_for_each(). iterator can return RT_EOK to continue the iteration; or any positive value to break the loop successfully; or any negative errno to break the loop on failure.

Enumeration Type Documentation

◆ rt_object_class_type

enum rt_object_class_type

The object type can be one of the follows with specific macros enabled:

Thread
Semaphore
Mutex
Event
MailBox
MessageQueue
MemHeap
MemPool
Device
Timer
Module
Unknown
Static

Enumerator
RT_Object_Class_Null	The object is not used.
RT_Object_Class_Thread	The object is a thread.
RT_Object_Class_Semaphore	The object is a semaphore.
RT_Object_Class_Mutex	The object is a mutex.
RT_Object_Class_Event	The object is a event.
RT_Object_Class_MailBox	The object is a mail box.
RT_Object_Class_MessageQueue	The object is a message queue.
RT_Object_Class_MemHeap	The object is a memory heap.
RT_Object_Class_MemPool	The object is a memory pool.
RT_Object_Class_Device	The object is a device.
RT_Object_Class_Timer	The object is a timer.
RT_Object_Class_Module	The object is a module.
RT_Object_Class_Memory	The object is a memory.
RT_Object_Class_Channel	The object is a channel
RT_Object_Class_ProcessGroup	The object is a process group
RT_Object_Class_Session	The object is a session
RT_Object_Class_Custom	The object is a custom object
RT_Object_Class_Unknown	The object is unknown.
RT_Object_Class_Static	The object is a static object.

Function Documentation

◆ rt_object_get_information()

struct rt_object_information * rt_object_get_information ( enum rt_object_class_type type )

This function will return the specified type of object information.

Parameters

type	is the type of object, which can be RT_Object_Class_Thread/Semaphore/Mutex... etc

Returns: the object type information or RT_NULL

◆ rt_object_get_length()

int rt_object_get_length ( enum rt_object_class_type type )

This function will return the length of object list in object container.

Parameters

type	is the type of object, which can be RT_Object_Class_Thread/Semaphore/Mutex... etc

Returns: the length of object list

◆ rt_object_get_pointers()

int rt_object_get_pointers	(	enum rt_object_class_type	type,
		rt_object_t *	pointers,
		int	maxlen
	)

This function will copy the object pointer of the specified type, with the maximum size specified by maxlen.

Parameters

type	is the type of object, which can be RT_Object_Class_Thread/Semaphore/Mutex... etc
pointers	is the pointer will be saved to.
maxlen	is the maximum number of pointers can be saved.

Returns: the copied number of object pointers.

◆ rt_object_init()

void rt_object_init	(	struct rt_object *	object,
		enum rt_object_class_type	type,
		const char *	name
	)

This function will initialize an object and add it to object system management.

Parameters

object	is the specified object to be initialized.
type	is the object type.
name	is the object name. In system, the object's name must be unique.

◆ rt_object_detach()

void rt_object_detach ( rt_object_t object )

This function will detach a static object from object system, and the memory of static object is not freed.

Parameters

object the specified object to be detached.

◆ rt_object_allocate()

rt_object_t rt_object_allocate	(	enum rt_object_class_type	type,
		const char *	name
	)

This function will allocate an object from object system.

Parameters

type	is the type of object.
name	is the object name. In system, the object's name must be unique.

Returns: object

◆ rt_object_delete()

void rt_object_delete ( rt_object_t object )

This function will delete an object and release object memory.

Parameters

object is the specified object to be deleted.

◆ rt_object_is_systemobject()

rt_bool_t rt_object_is_systemobject ( rt_object_t object )

This function will judge the object is system object or not.

Note: Normally, the system object is a static object and the type of object set to RT_Object_Class_Static.

Parameters

object is the specified object to be judged.

Returns: RT_TRUE if a system object, RT_FALSE for others.

◆ rt_object_get_type()

rt_uint8_t rt_object_get_type ( rt_object_t object )

This function will return the type of object without RT_Object_Class_Static flag.

Parameters

object is the specified object to be get type.

Returns: the type of object.

◆ rt_object_for_each()

rt_err_t rt_object_for_each	(	rt_uint8_t	type,
		rt_object_iter_t	iter,
		void *	data
	)

This function will iterate through each object from object container.

Parameters

type	is the type of object
iter	is the iterator
data	is the specified data passed to iterator

Returns: RT_EOK on succeed, otherwise the error from iter

Note: this function shall not be invoked in interrupt status.

◆ rt_object_find()

rt_object_t rt_object_find	(	const char *	name,
		rt_uint8_t	type
	)

This function will find specified name object from object container.

Parameters

name	is the specified name of object.
type	is the type of object

Returns: the found object or RT_NULL if there is no this object in object container.

Note: this function shall not be invoked in interrupt status.

◆ rt_object_get_name()

rt_err_t rt_object_get_name	(	rt_object_t	object,
		char *	name,
		rt_uint8_t	name_size
	)

This function will return the name of the specified object container.

Parameters

object	the specified object to be get name
name	buffer to store the object name string
name_size	maximum size of the buffer to store object name

Returns: -RT_EINVAL if any parameter is invalid or RT_EOK if the operation is successfully executed

Note: this function shall not be invoked in interrupt status

◆ rt_custom_object_create()

rt_object_t rt_custom_object_create	(	const char *	name,
		void *	data,
		rt_err_t()(void )	data_destroy
	)

This function will create a custom object container.

Parameters

name	the specified name of object.
data	the custom data
data_destroy	the custom object destroy callback

Returns: the found object or RT_NULL if there is no this object in object container.

Note: this function shall not be invoked in interrupt status.

◆ rt_custom_object_destroy()

rt_err_t rt_custom_object_destroy ( rt_object_t obj )

This function will destroy a custom object container.

Parameters

obj	the specified name of object.

Note: this function shall not be invoked in interrupt status.

Data Structures

Macros

Typedefs

Enumerations

Functions

Detailed Description

Macro Definition Documentation

◆ RT_OBJECT_FLAG_MODULE

◆ _RT_OBJECT_HOOK_CALL

Typedef Documentation

◆ rt_object_t

◆ rt_object_iter_t

Enumeration Type Documentation

◆ rt_object_class_type

Function Documentation

◆ rt_object_get_information()

◆ rt_object_get_length()

◆ rt_object_get_pointers()

◆ rt_object_init()

◆ rt_object_detach()

◆ rt_object_allocate()

◆ rt_object_delete()

◆ rt_object_is_systemobject()

◆ rt_object_get_type()

◆ rt_object_for_each()

◆ rt_object_find()

◆ rt_object_get_name()

◆ rt_custom_object_create()

◆ rt_custom_object_destroy()