353 lines
9.2 KiB
C
353 lines
9.2 KiB
C
/*
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* File : object.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2009, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2006-03-14 Bernard the first version
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* 2006-04-21 Bernard change the scheduler lock to interrupt lock
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* 2006-05-18 Bernard fix the object init bug
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* 2006-08-03 Bernard add hook support
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* 2007-01-28 Bernard rename RT_OBJECT_Class_Static to RT_Object_Class_Static
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*/
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#include <rtthread.h>
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#include <rthw.h>
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#include "kservice.h"
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#define _OBJ_CONTAINER_LIST_INIT(c) \
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{&(rt_object_container[c].object_list), &(rt_object_container[c].object_list)}
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struct rt_object_information rt_object_container[RT_Object_Class_Unknown] =
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{
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/* init object container - thread */
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{RT_Object_Class_Thread, _OBJ_CONTAINER_LIST_INIT(RT_Object_Class_Thread), sizeof(struct rt_thread)},
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#ifdef RT_USING_SEMAPHORE
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/* init object container - semaphore */
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{RT_Object_Class_Semaphore, _OBJ_CONTAINER_LIST_INIT(RT_Object_Class_Semaphore), sizeof(struct rt_semaphore)},
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#endif
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#ifdef RT_USING_MUTEX
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/* init object container - mutex */
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{RT_Object_Class_Mutex, _OBJ_CONTAINER_LIST_INIT(RT_Object_Class_Mutex), sizeof(struct rt_mutex)},
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#endif
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#ifdef RT_USING_EVENT
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/* init object container - event */
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{RT_Object_Class_Event, _OBJ_CONTAINER_LIST_INIT(RT_Object_Class_Event), sizeof(struct rt_event)},
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#endif
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#ifdef RT_USING_MAILBOX
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/* init object container - mailbox */
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{RT_Object_Class_MailBox, _OBJ_CONTAINER_LIST_INIT(RT_Object_Class_MailBox), sizeof(struct rt_mailbox)},
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#endif
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#ifdef RT_USING_MESSAGEQUEUE
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/* init object container - message queue */
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{RT_Object_Class_MessageQueue, _OBJ_CONTAINER_LIST_INIT(RT_Object_Class_MessageQueue), sizeof(struct rt_messagequeue)},
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#endif
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#ifdef RT_USING_MEMPOOL
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/* init object container - memory pool */
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{RT_Object_Class_MemPool, _OBJ_CONTAINER_LIST_INIT(RT_Object_Class_MemPool), sizeof(struct rt_mempool)},
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#endif
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#ifdef RT_USING_DEVICE
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/* init object container - device */
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{RT_Object_Class_Device, _OBJ_CONTAINER_LIST_INIT(RT_Object_Class_Device), sizeof(struct rt_device)},
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#endif
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/* init object container - timer */
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{RT_Object_Class_Timer, _OBJ_CONTAINER_LIST_INIT(RT_Object_Class_Timer), sizeof(struct rt_timer)},
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#ifdef RT_USING_MODULE
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/* init object container - module */
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{RT_Object_Class_Module, _OBJ_CONTAINER_LIST_INIT(RT_Object_Class_Module), sizeof(struct rt_module)},
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#endif
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};
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#ifdef RT_USING_HOOK
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static void (*rt_object_attach_hook)(struct rt_object* object);
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static void (*rt_object_detach_hook)(struct rt_object* object);
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void (*rt_object_trytake_hook)(struct rt_object* object);
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void (*rt_object_take_hook)(struct rt_object* object);
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void (*rt_object_put_hook)(struct rt_object* object);
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/**
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* @addtogroup Hook
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*/
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/*@{*/
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/**
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* This function will set a hook function, which will be invoked when object
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* attaches to kernel object system.
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*
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* @param hook the hook function
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*/
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void rt_object_attach_sethook(void (*hook)(struct rt_object* object))
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{
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rt_object_attach_hook = hook;
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}
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/**
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* This function will set a hook function, which will be invoked when object
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* detaches from kernel object system.
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*
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* @param hook the hook function
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*/
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void rt_object_detach_sethook(void (*hook)(struct rt_object* object))
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{
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rt_object_detach_hook = hook;
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}
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/**
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* This function will set a hook function, which will be invoked when object
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* is taken from kernel object system.
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*
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* The object is taken means that
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* semaphore - semaphore is taken by thread
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* mutex - mutex is taken by thread
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* event - event is received by thread
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* mailbox - mail is received by thread
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* message queue - message is received by thread
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*
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* @param hook the hook function
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*/
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void rt_object_trytake_sethook(void (*hook)(struct rt_object* object))
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{
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rt_object_trytake_hook = hook;
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}
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/**
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* This function will set a hook function, which will be invoked when object
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* have been taken from kernel object system.
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*
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* The object have been taken means that
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* semaphore - semaphore have been taken by thread
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* mutex - mutex have been taken by thread
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* event - event have been received by thread
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* mailbox - mail have been received by thread
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* message queue - message have been received by thread
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* timer - timer is started
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*
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* @param hook the hook function
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*/
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void rt_object_take_sethook(void (*hook)(struct rt_object* object))
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{
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rt_object_take_hook = hook;
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}
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/**
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* This function will set a hook function, which will be invoked when object
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* is put to kernel object system.
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*
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* @param hook the hook function
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*/
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void rt_object_put_sethook(void (*hook)(struct rt_object* object))
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{
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rt_object_put_hook = hook;
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}
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/*@}*/
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#endif
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/**
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* @ingroup SystemInit
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*
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* This function will initialize system object management
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*
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*/
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void rt_system_object_init(void)
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{
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}
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/**
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* @addtogroup KernelObject
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*/
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/*@{*/
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/**
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* This function will init an object and add it to object system management.
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*
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* @param object the specified object to be initialized.
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* @param type the object type.
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* @param name the object name. In system, the object's name must
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* be unique.
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*/
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void rt_object_init(struct rt_object* object, enum rt_object_class_type type, const char* name)
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{
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register rt_base_t temp;
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struct rt_object_information* information;
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#ifdef RT_USING_MODULE
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/* get module object information */
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information = (rt_module_self() != RT_NULL) ?
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&rt_module_self()->module_object[type] : &rt_object_container[type];
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#else
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/* get object information */
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information = &rt_object_container[type];
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#endif
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/* init object's parameters */
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/* set object type to static */
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object->type = type | RT_Object_Class_Static;
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/* copy name */
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for (temp = 0; temp < RT_NAME_MAX; temp ++)
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{
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object->name[temp] = name[temp];
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}
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#ifdef RT_USING_HOOK
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if (rt_object_attach_hook != RT_NULL)
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{
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rt_object_attach_hook(object);
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}
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#endif
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/* lock interrupt */
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temp = rt_hw_interrupt_disable();
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/* insert object into information object list */
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rt_list_insert_after(&(information->object_list), &(object->list));
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/* unlock interrupt */
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rt_hw_interrupt_enable(temp);
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}
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/**
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* This function will detach a static object from object system,
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* and the memory of static object is not freed.
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*
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* @param object the specified object to be detached.
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*/
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void rt_object_detach(rt_object_t object)
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{
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register rt_base_t temp;
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/* object check */
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RT_ASSERT(object != RT_NULL);
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#ifdef RT_USING_HOOK
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if (rt_object_detach_hook != RT_NULL) rt_object_detach_hook(object);
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#endif
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/* lock interrupt */
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temp = rt_hw_interrupt_disable();
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/* remove from old list */
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rt_list_remove(&(object->list));
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/* unlock interrupt */
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rt_hw_interrupt_enable(temp);
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}
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#ifdef RT_USING_HEAP
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/**
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* This function will allocate an object from object system
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*
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* @param type the type of object
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* @param name the object name. In system, the object's name must be unique.
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*
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* @return object
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*/
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rt_object_t rt_object_allocate(enum rt_object_class_type type, const char* name)
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{
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struct rt_object* object;
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register rt_base_t temp;
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struct rt_object_information* information;
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#ifdef RT_USING_MODULE
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/* get module object information */
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information = (rt_module_self() != RT_NULL) ?
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&rt_module_self()->module_object[type] : &rt_object_container[type];
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#else
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/* get object information */
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information = &rt_object_container[type];
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#endif
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object = (struct rt_object*)rt_malloc(information->object_size);
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if (object == RT_NULL)
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{
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/* no memory can be allocated */
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return RT_NULL;
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}
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/* init object's parameters */
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/* set object type */
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object->type = type;
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/* copy name */
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for (temp = 0; temp < RT_NAME_MAX; temp ++)
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{
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object->name[temp] = name[temp];
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}
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#ifdef RT_USING_HOOK
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if (rt_object_attach_hook != RT_NULL) rt_object_attach_hook(object);
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#endif
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/* lock interrupt */
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temp = rt_hw_interrupt_disable();
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/* insert object into information object list */
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rt_list_insert_after(&(information->object_list), &(object->list));
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/* unlock interrupt */
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rt_hw_interrupt_enable(temp);
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/* return object */
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return object;
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}
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/**
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* This function will delete an object and release object memory.
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*
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* @param object the specified object to be deleted.
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*/
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void rt_object_delete(rt_object_t object)
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{
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register rt_base_t temp;
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/* object check */
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RT_ASSERT(object != RT_NULL);
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RT_ASSERT(!(object->type & RT_Object_Class_Static));
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#ifdef RT_USING_HOOK
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if (rt_object_detach_hook != RT_NULL) rt_object_detach_hook(object);
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#endif
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/* lock interrupt */
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temp = rt_hw_interrupt_disable();
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/* remove from old list */
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rt_list_remove(&(object->list));
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/* unlock interrupt */
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rt_hw_interrupt_enable(temp);
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/* free the memory of object */
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rt_free(object);
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}
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#endif
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/**
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* This function will judge the object is system object or not.
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* Normally, the system object is a static object and the type
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* of object set to RT_Object_Class_Static.
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*
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* @param object the specified object to be judged.
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*
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* @return RT_EOK if a system object, RT_ERROR for others.
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*/
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rt_err_t rt_object_is_systemobject(rt_object_t object)
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{
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/* object check */
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RT_ASSERT(object != RT_NULL);
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if (object->type & RT_Object_Class_Static) return RT_EOK;
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return -RT_ERROR;
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}
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/*@}*/
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