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CoOS/kernel/event.c@0:94897d537b31, 2011-09-10 (annotated)

Committer:: astroboy
Date:: Sat Sep 10 22:41:10 2011 +0000
Revision:: 0:94897d537b31

Who changed what in which revision?

User	Revision	Line number	New contents of line
astroboy	0:94897d537b31	1	/**
astroboy	0:94897d537b31	2	*******************************************************************************
astroboy	0:94897d537b31	3	* @file event.c
astroboy	0:94897d537b31	4	* @version V1.1.4
astroboy	0:94897d537b31	5	* @date 2011.04.20
astroboy	0:94897d537b31	6	* @brief event management implementation code of CooCox CoOS kernel.
astroboy	0:94897d537b31	7	*******************************************************************************
astroboy	0:94897d537b31	8	* @copy
astroboy	0:94897d537b31	9	*
astroboy	0:94897d537b31	10	* INTERNAL FILE,DON'T PUBLIC.
astroboy	0:94897d537b31	11	*
astroboy	0:94897d537b31	12	* <h2><center>© COPYRIGHT 2009 CooCox </center></h2>
astroboy	0:94897d537b31	13	*******************************************************************************
astroboy	0:94897d537b31	14	*/
astroboy	0:94897d537b31	15
astroboy	0:94897d537b31	16
astroboy	0:94897d537b31	17	/---------------------------- Include ---------------------------------------/
astroboy	0:94897d537b31	18	#include <coocox.h>
astroboy	0:94897d537b31	19
astroboy	0:94897d537b31	20
astroboy	0:94897d537b31	21	/---------------------------- Variable Define -------------------------------/
astroboy	0:94897d537b31	22	#if CFG_EVENT_EN > 0
astroboy	0:94897d537b31	23
astroboy	0:94897d537b31	24	ECB EventTbl[CFG_MAX_EVENT]= {{0}};/!< Table which save event control block./
astroboy	0:94897d537b31	25	P_ECB FreeEventList = 0; /!< Pointer to free event control block. /
astroboy	0:94897d537b31	26
astroboy	0:94897d537b31	27
astroboy	0:94897d537b31	28	/**
astroboy	0:94897d537b31	29	*******************************************************************************
astroboy	0:94897d537b31	30	* @brief Create a empty list of event control block
astroboy	0:94897d537b31	31	* @param[in] None
astroboy	0:94897d537b31	32	* @param[out] None
astroboy	0:94897d537b31	33	* @retval None
astroboy	0:94897d537b31	34	*
astroboy	0:94897d537b31	35	* @par Description
astroboy	0:94897d537b31	36	* @details This function is called by OSInit() API to create a ECB list,supply
astroboy	0:94897d537b31	37	* a pointer to next event control block that not used.
astroboy	0:94897d537b31	38	*******************************************************************************
astroboy	0:94897d537b31	39	*/
astroboy	0:94897d537b31	40	void CreateEventList(void)
astroboy	0:94897d537b31	41	{
astroboy	0:94897d537b31	42	U8 i;
astroboy	0:94897d537b31	43	P_ECB pecb1;
astroboy	0:94897d537b31	44	#if CFG_MAX_EVENT > 1
astroboy	0:94897d537b31	45	P_ECB pecb2;
astroboy	0:94897d537b31	46	#endif
astroboy	0:94897d537b31	47	i=0;
astroboy	0:94897d537b31	48	pecb1 = &EventTbl[0]; /* Get first item */
astroboy	0:94897d537b31	49	#if CFG_MAX_EVENT == 1 /* Build event list for only one item */
astroboy	0:94897d537b31	50	pecb1->eventPtr = Co_NULL;
astroboy	0:94897d537b31	51	pecb1->id = i; /* Assign ID. */
astroboy	0:94897d537b31	52	pecb1->eventType = EVENT_TYPE_INVALID; /* Sign that not to use. */
astroboy	0:94897d537b31	53	#endif
astroboy	0:94897d537b31	54
astroboy	0:94897d537b31	55	#if CFG_MAX_EVENT > 1 /* Build event list for more than one item */
astroboy	0:94897d537b31	56	pecb2 = &EventTbl[1];
astroboy	0:94897d537b31	57	for(;i< (CFG_MAX_EVENT-1);i++ )
astroboy	0:94897d537b31	58	{
astroboy	0:94897d537b31	59	pecb1->eventPtr = (void)pecb2; / Set link for list */
astroboy	0:94897d537b31	60	pecb1->id = i; /* Assign ID. */
astroboy	0:94897d537b31	61	pecb1->eventType = EVENT_TYPE_INVALID;/* Sign that not to use. */
astroboy	0:94897d537b31	62	pecb1++; /* Get next item */
astroboy	0:94897d537b31	63	pecb2++;
astroboy	0:94897d537b31	64	}
astroboy	0:94897d537b31	65	pecb1->eventType = EVENT_TYPE_INVALID; /* Sign that not to use. */
astroboy	0:94897d537b31	66	pecb1->eventPtr = Co_NULL; /* Set link for last item */
astroboy	0:94897d537b31	67	pecb1->id = i;
astroboy	0:94897d537b31	68	#endif
astroboy	0:94897d537b31	69
astroboy	0:94897d537b31	70	FreeEventList = &EventTbl[0]; /* Set free event item */
astroboy	0:94897d537b31	71	}
astroboy	0:94897d537b31	72
astroboy	0:94897d537b31	73
astroboy	0:94897d537b31	74
astroboy	0:94897d537b31	75	/**
astroboy	0:94897d537b31	76	*******************************************************************************
astroboy	0:94897d537b31	77	* @brief Release a ECB
astroboy	0:94897d537b31	78	* @param[in] pecb A pointer to event control block which be released.
astroboy	0:94897d537b31	79	* @param[out] None
astroboy	0:94897d537b31	80	* @retval None
astroboy	0:94897d537b31	81	*
astroboy	0:94897d537b31	82	* @par Description
astroboy	0:94897d537b31	83	* @details This function is called to release a event control block when a
astroboy	0:94897d537b31	84	* event be deleted.
astroboy	0:94897d537b31	85	*******************************************************************************
astroboy	0:94897d537b31	86	*/
astroboy	0:94897d537b31	87	static void ReleaseECB(P_ECB pecb)
astroboy	0:94897d537b31	88	{
astroboy	0:94897d537b31	89	pecb->eventType = EVENT_TYPE_INVALID; /* Sign that not to use. */
astroboy	0:94897d537b31	90	OsSchedLock(); /* Lock schedule */
astroboy	0:94897d537b31	91	pecb->eventPtr = FreeEventList; /* Release ECB that event hold */
astroboy	0:94897d537b31	92	FreeEventList = pecb; /* Reset free event item */
astroboy	0:94897d537b31	93	OsSchedUnlock(); /* Unlock schedule */
astroboy	0:94897d537b31	94	}
astroboy	0:94897d537b31	95
astroboy	0:94897d537b31	96
astroboy	0:94897d537b31	97
astroboy	0:94897d537b31	98	/**
astroboy	0:94897d537b31	99	*******************************************************************************
astroboy	0:94897d537b31	100	* @brief Create a event
astroboy	0:94897d537b31	101	* @param[in] eventType The type of event which being created.
astroboy	0:94897d537b31	102	* @param[in] eventSortType Event sort type.
astroboy	0:94897d537b31	103	* @param[in] eventCounter Event counter,ONLY for EVENT_TYPE_SEM.
astroboy	0:94897d537b31	104	* @param[in] eventPtr Event struct pointer,ONLY for Queue.Co_NULL for other
astroboy	0:94897d537b31	105	* event type.
astroboy	0:94897d537b31	106	* @param[out] None
astroboy	0:94897d537b31	107	* @retval Co_NULL Invalid pointer,create event fail.
astroboy	0:94897d537b31	108	* @retval others Pointer to event control block which had assigned right now.
astroboy	0:94897d537b31	109	*
astroboy	0:94897d537b31	110	* @par Description
astroboy	0:94897d537b31	111	* @details This function is called by CreateSem(),...
astroboy	0:94897d537b31	112	* to get a event control block and initial the event content.
astroboy	0:94897d537b31	113	*
astroboy	0:94897d537b31	114	* @note This is a internal function of CooCox CoOS,User can't call.
astroboy	0:94897d537b31	115	*******************************************************************************
astroboy	0:94897d537b31	116	*/
astroboy	0:94897d537b31	117	P_ECB CreatEvent(U8 eventType,U8 eventSortType,void* eventPtr)
astroboy	0:94897d537b31	118	{
astroboy	0:94897d537b31	119	P_ECB pecb;
astroboy	0:94897d537b31	120
astroboy	0:94897d537b31	121	OsSchedLock(); /* Lock schedule */
astroboy	0:94897d537b31	122	if(FreeEventList == Co_NULL) /* Is there no free evnet item */
astroboy	0:94897d537b31	123	{
astroboy	0:94897d537b31	124	OsSchedUnlock(); /* Yes,unlock schedule */
astroboy	0:94897d537b31	125	return 0; /* Return error */
astroboy	0:94897d537b31	126	}
astroboy	0:94897d537b31	127	pecb = FreeEventList;/* Assign the free event item to this event */
astroboy	0:94897d537b31	128	FreeEventList = (P_ECB)FreeEventList->eventPtr; /* Reset free event item */
astroboy	0:94897d537b31	129	OsSchedUnlock(); /* Unlock schedul */
astroboy	0:94897d537b31	130
astroboy	0:94897d537b31	131	pecb->eventType = eventType; /* Initialize event item as user set */
astroboy	0:94897d537b31	132	pecb->eventSortType = eventSortType;
astroboy	0:94897d537b31	133	pecb->eventPtr = eventPtr;
astroboy	0:94897d537b31	134	pecb->eventTCBList = 0;
astroboy	0:94897d537b31	135	return pecb; /* Return event item pointer */
astroboy	0:94897d537b31	136	}
astroboy	0:94897d537b31	137
astroboy	0:94897d537b31	138
astroboy	0:94897d537b31	139	/**
astroboy	0:94897d537b31	140	*******************************************************************************
astroboy	0:94897d537b31	141	* @brief Delete a event
astroboy	0:94897d537b31	142	* @param[in] pecb Pointer to event control block which will be deleted.
astroboy	0:94897d537b31	143	* @param[in] opt Delete option.
astroboy	0:94897d537b31	144	* @arg == OPT_DEL_ANYWAY Delete event always
astroboy	0:94897d537b31	145	* @arg == OPT_DEL_NO_PEND Delete event only when no task pending on.
astroboy	0:94897d537b31	146	* @param[out] None
astroboy	0:94897d537b31	147	* @retval E_INVALID_PARAMETER Parameter passed is invalid,deleted fail.
astroboy	0:94897d537b31	148	* @retval E_TASK_WAITTING These are one more tasks waitting event.
astroboy	0:94897d537b31	149	* @retval E_OK Delete event control block successful.
astroboy	0:94897d537b31	150	*
astroboy	0:94897d537b31	151	* @par Description
astroboy	0:94897d537b31	152	* @details This function is called to delete a event from the event wait list
astroboy	0:94897d537b31	153	* use specify option.
astroboy	0:94897d537b31	154	*
astroboy	0:94897d537b31	155	* @note This is a internal function of Coocox CoOS,user can't call.
astroboy	0:94897d537b31	156	*******************************************************************************
astroboy	0:94897d537b31	157	*/
astroboy	0:94897d537b31	158	StatusType DeleteEvent(P_ECB pecb,U8 opt)
astroboy	0:94897d537b31	159	{
astroboy	0:94897d537b31	160	P_OSTCB ptcb;
astroboy	0:94897d537b31	161	if(opt == OPT_DEL_NO_PEND) /* Do delete event when no task pend? */
astroboy	0:94897d537b31	162	{
astroboy	0:94897d537b31	163	if(pecb->eventTCBList != Co_NULL) /* Yes,is there task pend this event? */
astroboy	0:94897d537b31	164	{
astroboy	0:94897d537b31	165	return E_TASK_WAITING; /* Yes,error return */
astroboy	0:94897d537b31	166	}
astroboy	0:94897d537b31	167	else
astroboy	0:94897d537b31	168	{
astroboy	0:94897d537b31	169	ReleaseECB(pecb); /* No,release resource that event hold*/
astroboy	0:94897d537b31	170	}
astroboy	0:94897d537b31	171	}
astroboy	0:94897d537b31	172	else if(opt == OPT_DEL_ANYWAY) /* Do delete event anyway? */
astroboy	0:94897d537b31	173	{
astroboy	0:94897d537b31	174	OsSchedLock(); /* Lock schedule */
astroboy	0:94897d537b31	175	while(pecb->eventTCBList != Co_NULL) /* Is there task pend this event? */
astroboy	0:94897d537b31	176	{ /* Yes,remove it */
astroboy	0:94897d537b31	177	ptcb = pecb->eventTCBList;/* Get first task in event waiting list */
astroboy	0:94897d537b31	178	if(ptcb->delayTick != INVALID_VALUE) /* Is task in delay list? */
astroboy	0:94897d537b31	179	{
astroboy	0:94897d537b31	180	RemoveDelayList(ptcb); /* Yes,remove task from delay list */
astroboy	0:94897d537b31	181	}
astroboy	0:94897d537b31	182
astroboy	0:94897d537b31	183	/* Set next item as event waiting list head */
astroboy	0:94897d537b31	184	pecb->eventTCBList = ptcb->waitNext;
astroboy	0:94897d537b31	185	ptcb->waitNext = 0; /* Clear link for event waiting list */
astroboy	0:94897d537b31	186	ptcb->eventID = INVALID_ID; /* Sign that not to use. */
astroboy	0:94897d537b31	187
astroboy	0:94897d537b31	188	InsertToTCBRdyList(ptcb); /* Insert task into ready list */
astroboy	0:94897d537b31	189	}
astroboy	0:94897d537b31	190	OsSchedUnlock(); /* Unlock schedule */
astroboy	0:94897d537b31	191	ReleaseECB(pecb); /* Release resource that event hold */
astroboy	0:94897d537b31	192	}
astroboy	0:94897d537b31	193	return E_OK; /* Return OK */
astroboy	0:94897d537b31	194	}
astroboy	0:94897d537b31	195
astroboy	0:94897d537b31	196
astroboy	0:94897d537b31	197	/**
astroboy	0:94897d537b31	198	*******************************************************************************
astroboy	0:94897d537b31	199	* @brief Insert a task to event wait list
astroboy	0:94897d537b31	200	* @param[in] pecb Pointer to event control block corresponding to the event.
astroboy	0:94897d537b31	201	* @param[in] ptcb Pointer to task that will be insert to event wait list.
astroboy	0:94897d537b31	202	* @param[out] None
astroboy	0:94897d537b31	203	* @retval None
astroboy	0:94897d537b31	204	*
astroboy	0:94897d537b31	205	* @par Description
astroboy	0:94897d537b31	206	* @details This function is called to insert a task by fllowing manner:
astroboy	0:94897d537b31	207	* opt == EVENT_SORT_TYPE_FIFO By FIFO.
astroboy	0:94897d537b31	208	* opt == EVENT_SORT_TYPE_PRIO By priority order,hghest priority
astroboy	0:94897d537b31	209	* as head,lowest priority as end.
astroboy	0:94897d537b31	210	* (Highest-->...-->Lowest-->Co_NULL)
astroboy	0:94897d537b31	211	*******************************************************************************
astroboy	0:94897d537b31	212	*/
astroboy	0:94897d537b31	213	void EventTaskToWait(P_ECB pecb,P_OSTCB ptcb)
astroboy	0:94897d537b31	214	{
astroboy	0:94897d537b31	215	P_OSTCB ptcb1;
astroboy	0:94897d537b31	216	#if (CFG_EVENT_SORT == 2) \|\| (CFG_EVENT_SORT == 3)
astroboy	0:94897d537b31	217	P_OSTCB ptcb2;
astroboy	0:94897d537b31	218	#endif
astroboy	0:94897d537b31	219
astroboy	0:94897d537b31	220	OsSchedLock(); /* Lock schedule */
astroboy	0:94897d537b31	221	ptcb1 = pecb->eventTCBList; /* Get first task in event waiting list */
astroboy	0:94897d537b31	222	ptcb->eventID = pecb->id; /* Set event ID for task */
astroboy	0:94897d537b31	223
astroboy	0:94897d537b31	224	#if CFG_EVENT_SORT == 3 /* Does event waiting list sort as FIFO? */
astroboy	0:94897d537b31	225
astroboy	0:94897d537b31	226	if(pecb->eventSortType == EVENT_SORT_TYPE_FIFO)
astroboy	0:94897d537b31	227	#endif
astroboy	0:94897d537b31	228
astroboy	0:94897d537b31	229	#if (CFG_EVENT_SORT == 1) \|\| (CFG_EVENT_SORT == 3)
astroboy	0:94897d537b31	230	{
astroboy	0:94897d537b31	231	if(ptcb1 == Co_NULL) /* Is no item in event waiting list?*/
astroboy	0:94897d537b31	232	{
astroboy	0:94897d537b31	233	pecb->eventTCBList = ptcb; /* Yes,set task as first item */
astroboy	0:94897d537b31	234	}
astroboy	0:94897d537b31	235	else
astroboy	0:94897d537b31	236	{
astroboy	0:94897d537b31	237	while(ptcb1->waitNext != Co_NULL)/* No,insert task in last */
astroboy	0:94897d537b31	238	{
astroboy	0:94897d537b31	239	ptcb1 = ptcb1->waitNext;
astroboy	0:94897d537b31	240	}
astroboy	0:94897d537b31	241	ptcb1->waitNext = ptcb; /* Set link for list */
astroboy	0:94897d537b31	242	ptcb->waitPrev = ptcb1;
astroboy	0:94897d537b31	243	}
astroboy	0:94897d537b31	244	}
astroboy	0:94897d537b31	245	#endif
astroboy	0:94897d537b31	246
astroboy	0:94897d537b31	247	#if CFG_EVENT_SORT ==3 /* Does event waiting list sort as preemptive priority?*/
astroboy	0:94897d537b31	248	else if(pecb->eventSortType == EVENT_SORT_TYPE_PRIO)
astroboy	0:94897d537b31	249	#endif
astroboy	0:94897d537b31	250	#if (CFG_EVENT_SORT == 2) \|\| (CFG_EVENT_SORT == 3)
astroboy	0:94897d537b31	251	{
astroboy	0:94897d537b31	252	if(ptcb1 == Co_NULL) /* Is no item in event waiting list? */
astroboy	0:94897d537b31	253	{
astroboy	0:94897d537b31	254	pecb->eventTCBList = ptcb; /* Yes,set task as first item */
astroboy	0:94897d537b31	255	}
astroboy	0:94897d537b31	256	/* Is PRI of task higher than list first item? */
astroboy	0:94897d537b31	257	else if(ptcb1->prio > ptcb->prio)
astroboy	0:94897d537b31	258	{
astroboy	0:94897d537b31	259	pecb->eventTCBList = ptcb; /* Reset task as first item */
astroboy	0:94897d537b31	260	ptcb->waitNext = ptcb1; /* Set link for list */
astroboy	0:94897d537b31	261	ptcb1->waitPrev = ptcb;
astroboy	0:94897d537b31	262	}
astroboy	0:94897d537b31	263	else /* No,find correct place to insert */
astroboy	0:94897d537b31	264	{
astroboy	0:94897d537b31	265	ptcb2 = ptcb1->waitNext;
astroboy	0:94897d537b31	266	while(ptcb2 != Co_NULL) /* Is last item? */
astroboy	0:94897d537b31	267	{
astroboy	0:94897d537b31	268	if(ptcb2->prio > ptcb->prio) /* No,is correct place? */
astroboy	0:94897d537b31	269	{
astroboy	0:94897d537b31	270	break; /* Yes,break Circulation */
astroboy	0:94897d537b31	271	}
astroboy	0:94897d537b31	272	ptcb1 = ptcb2; /* Save current item */
astroboy	0:94897d537b31	273	ptcb2 = ptcb2->waitNext; /* Get next item */
astroboy	0:94897d537b31	274	}
astroboy	0:94897d537b31	275	ptcb1->waitNext = ptcb; /* Set link for list */
astroboy	0:94897d537b31	276	ptcb->waitPrev = ptcb1;
astroboy	0:94897d537b31	277	ptcb->waitNext = ptcb2;
astroboy	0:94897d537b31	278	if(ptcb2 != Co_NULL)
astroboy	0:94897d537b31	279	{
astroboy	0:94897d537b31	280	ptcb2->waitPrev = ptcb;
astroboy	0:94897d537b31	281	}
astroboy	0:94897d537b31	282	}
astroboy	0:94897d537b31	283	}
astroboy	0:94897d537b31	284	#endif
astroboy	0:94897d537b31	285	ptcb->state = TASK_WAITING; /* Set task status to TASK_WAITING state */
astroboy	0:94897d537b31	286	TaskSchedReq = Co_TRUE;
astroboy	0:94897d537b31	287	OsSchedUnlock(); /* Unlock schedule,and call task schedule */
astroboy	0:94897d537b31	288	}
astroboy	0:94897d537b31	289
astroboy	0:94897d537b31	290
astroboy	0:94897d537b31	291	/**
astroboy	0:94897d537b31	292	*******************************************************************************
astroboy	0:94897d537b31	293	* @brief Move a task from event WAITING list to the DELAY list
astroboy	0:94897d537b31	294	* @param[in] pecb Pointer to event control block corresponding to the event.
astroboy	0:94897d537b31	295	* @param[out] None
astroboy	0:94897d537b31	296	* @retval None
astroboy	0:94897d537b31	297	*
astroboy	0:94897d537b31	298	* @par Description
astroboy	0:94897d537b31	299	* @details This function is called to remove a task from event wait list,and
astroboy	0:94897d537b31	300	* then insert it into the READY list.
astroboy	0:94897d537b31	301	*******************************************************************************
astroboy	0:94897d537b31	302	*/
astroboy	0:94897d537b31	303	void EventTaskToRdy(P_ECB pecb)
astroboy	0:94897d537b31	304	{
astroboy	0:94897d537b31	305	P_OSTCB ptcb;
astroboy	0:94897d537b31	306	#if CFG_QUEUE_EN >0
astroboy	0:94897d537b31	307	P_QCB pqcb;
astroboy	0:94897d537b31	308	#endif
astroboy	0:94897d537b31	309	ptcb = pecb->eventTCBList;
astroboy	0:94897d537b31	310	if(ptcb == 0)
astroboy	0:94897d537b31	311	return;
astroboy	0:94897d537b31	312
astroboy	0:94897d537b31	313	pecb->eventTCBList = ptcb->waitNext;/* Get first task in event waiting list*/
astroboy	0:94897d537b31	314	if(pecb->eventTCBList != Co_NULL) /* Is no item in event waiting list? */
astroboy	0:94897d537b31	315	{
astroboy	0:94897d537b31	316	pecb->eventTCBList->waitPrev = 0; /* No,clear link for first item */
astroboy	0:94897d537b31	317	}
astroboy	0:94897d537b31	318
astroboy	0:94897d537b31	319	ptcb->waitNext = 0; /* Clear event waiting link for task*/
astroboy	0:94897d537b31	320	ptcb->eventID = INVALID_ID; /* Sign that not to use. */
astroboy	0:94897d537b31	321
astroboy	0:94897d537b31	322	if(ptcb->delayTick != INVALID_VALUE) /* Is task in delay list? */
astroboy	0:94897d537b31	323	{
astroboy	0:94897d537b31	324	RemoveDelayList(ptcb); /* Yes,remove task from DELAY list */
astroboy	0:94897d537b31	325	}
astroboy	0:94897d537b31	326	if(pecb->eventType == EVENT_TYPE_MBOX)/* Is it a mailbox event? */
astroboy	0:94897d537b31	327	{
astroboy	0:94897d537b31	328	ptcb->pmail = pecb->eventPtr; /* Yes,send mail to task */
astroboy	0:94897d537b31	329	pecb->eventPtr = Co_NULL; /* Clear event sign */
astroboy	0:94897d537b31	330	pecb->eventCounter--;
astroboy	0:94897d537b31	331	}
astroboy	0:94897d537b31	332	#if CFG_QUEUE_EN >0
astroboy	0:94897d537b31	333	else if(pecb->eventType == EVENT_TYPE_QUEUE) /* Is it a queue event? */
astroboy	0:94897d537b31	334	{
astroboy	0:94897d537b31	335	pqcb = (P_QCB)pecb->eventPtr; /* Yes,get queue pointer */
astroboy	0:94897d537b31	336	ptcb->pmail = (pqcb->qStart + pqcb->head); / Send mail to task */
astroboy	0:94897d537b31	337	pqcb->head++; /* Clear event sign */
astroboy	0:94897d537b31	338	pqcb->qSize--;
astroboy	0:94897d537b31	339	if(pqcb->head == pqcb->qMaxSize)
astroboy	0:94897d537b31	340	{
astroboy	0:94897d537b31	341	pqcb->head = 0;
astroboy	0:94897d537b31	342	}
astroboy	0:94897d537b31	343	}
astroboy	0:94897d537b31	344	#endif
astroboy	0:94897d537b31	345
astroboy	0:94897d537b31	346	#if CFG_MAILBOX_EN >0
astroboy	0:94897d537b31	347	else if(pecb->eventType == EVENT_TYPE_SEM)/* Is it a semaphore event? */
astroboy	0:94897d537b31	348	{
astroboy	0:94897d537b31	349	pecb->eventCounter--; /* Yes,clear event sign */
astroboy	0:94897d537b31	350	ptcb->pmail = (void)0xffffffff; / Indicate task woke by event */
astroboy	0:94897d537b31	351	}
astroboy	0:94897d537b31	352	#endif
astroboy	0:94897d537b31	353	if(ptcb == TCBRunning)
astroboy	0:94897d537b31	354	{
astroboy	0:94897d537b31	355	ptcb->state = TASK_RUNNING;
astroboy	0:94897d537b31	356	}
astroboy	0:94897d537b31	357	else
astroboy	0:94897d537b31	358	{
astroboy	0:94897d537b31	359	InsertToTCBRdyList(ptcb); /* Insert task into ready list */
astroboy	0:94897d537b31	360	}
astroboy	0:94897d537b31	361	}
astroboy	0:94897d537b31	362
astroboy	0:94897d537b31	363
astroboy	0:94897d537b31	364
astroboy	0:94897d537b31	365	/**
astroboy	0:94897d537b31	366	*******************************************************************************
astroboy	0:94897d537b31	367	* @brief Move a task from event wait list to the ready list
astroboy	0:94897d537b31	368	* @param[in] pecb Pointer to event control block corresponding to the event.
astroboy	0:94897d537b31	369	* @param[out] None
astroboy	0:94897d537b31	370	* @retval None
astroboy	0:94897d537b31	371	*
astroboy	0:94897d537b31	372	* @par Description
astroboy	0:94897d537b31	373	* @details This function is called to remove a task from event wait list,and
astroboy	0:94897d537b31	374	* then insert it to the ready list.
astroboy	0:94897d537b31	375	*******************************************************************************
astroboy	0:94897d537b31	376	*/
astroboy	0:94897d537b31	377	void RemoveEventWaittingList(P_OSTCB ptcb)
astroboy	0:94897d537b31	378	{
astroboy	0:94897d537b31	379	P_ECB pecb;
astroboy	0:94897d537b31	380	pecb = &EventTbl[ptcb->eventID]; /* Get event control block */
astroboy	0:94897d537b31	381
astroboy	0:94897d537b31	382	/* Is there only one item in event waiting list? */
astroboy	0:94897d537b31	383	if((ptcb->waitNext == 0) && (ptcb->waitPrev == 0))
astroboy	0:94897d537b31	384	{
astroboy	0:94897d537b31	385	pecb->eventTCBList = 0; /* Yes,set event waiting list as Co_NULL */
astroboy	0:94897d537b31	386	}
astroboy	0:94897d537b31	387	else if(ptcb->waitPrev == 0)/* Is the first item in event waiting list?*/
astroboy	0:94897d537b31	388	{
astroboy	0:94897d537b31	389	/* Yes,remove task from list,and reset event waiting list */
astroboy	0:94897d537b31	390	ptcb->waitNext->waitPrev = 0;
astroboy	0:94897d537b31	391	pecb->eventTCBList = ptcb->waitNext;
astroboy	0:94897d537b31	392	ptcb->waitNext = 0;
astroboy	0:94897d537b31	393	}
astroboy	0:94897d537b31	394	else if(ptcb->waitNext == 0)/* Is the last item in event waiting list? */
astroboy	0:94897d537b31	395	{
astroboy	0:94897d537b31	396	ptcb->waitPrev->waitNext = 0; /* Yes,remove task form list */
astroboy	0:94897d537b31	397	ptcb->waitPrev = 0;
astroboy	0:94897d537b31	398	}
astroboy	0:94897d537b31	399	else /* No, remove task from list */
astroboy	0:94897d537b31	400	{
astroboy	0:94897d537b31	401	ptcb->waitPrev->waitNext = ptcb->waitNext;
astroboy	0:94897d537b31	402	ptcb->waitNext->waitPrev = ptcb->waitPrev;
astroboy	0:94897d537b31	403	ptcb->waitPrev = 0;
astroboy	0:94897d537b31	404	ptcb->waitNext = 0;
astroboy	0:94897d537b31	405	}
astroboy	0:94897d537b31	406	ptcb->eventID = INVALID_ID; /* Sign that not to use. */
astroboy	0:94897d537b31	407	}
astroboy	0:94897d537b31	408
astroboy	0:94897d537b31	409	#endif //CFG_EVENT_EN
astroboy	0:94897d537b31	410

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	10 Sep 2011
Imports:	49
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	2
Followers:	2

CoOS/kernel/event.c@0:94897d537b31, 2011-09-10 (annotated)

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