CoOS_LWIP - Quick and dirty CoOS + LWIP ( Webserver )

Users » astroboy » Code » CoOS_LWIP

astroboy astroboy / Mbed 2 deprecated CoOS_LWIP

Quick and dirty CoOS + LWIP ( Webserver )

CoOS/kernel/mm.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 mm.c
astroboy	0:94897d537b31	4	* @version V1.1.4
astroboy	0:94897d537b31	5	* @date 2011.04.20
astroboy	0:94897d537b31	6	* @brief memory 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	#if CFG_MM_EN > 0
astroboy	0:94897d537b31	22	/---------------------------- Variable Define -------------------------------/
astroboy	0:94897d537b31	23	MM MemoryTbl[CFG_MAX_MM] = {{0}};/!< Table which save memory control block. /
astroboy	0:94897d537b31	24	U32 MemoryIDVessel = 0; /!< Memory ID container. /
astroboy	0:94897d537b31	25
astroboy	0:94897d537b31	26	/**
astroboy	0:94897d537b31	27	*******************************************************************************
astroboy	0:94897d537b31	28	* @brief Create a memory partition
astroboy	0:94897d537b31	29	* @param[in] memBuf Specify memory partition head address.
astroboy	0:94897d537b31	30	* @param[in] blockSize Specify memory block size.
astroboy	0:94897d537b31	31	* @param[in] blockNum Specify memory block number.
astroboy	0:94897d537b31	32	* @param[out] None
astroboy	0:94897d537b31	33	* @retval E_CREATE_FAIL Create memory partition fail.
astroboy	0:94897d537b31	34	* @retval others Create memory partition successful.
astroboy	0:94897d537b31	35	*
astroboy	0:94897d537b31	36	* @par Description
astroboy	0:94897d537b31	37	* @details This function is called to create a memory partition.
astroboy	0:94897d537b31	38	*******************************************************************************
astroboy	0:94897d537b31	39	*/
astroboy	0:94897d537b31	40	OS_MMID CoCreateMemPartition(U8* memBuf,U32 blockSize,U32 blockNum)
astroboy	0:94897d537b31	41	{
astroboy	0:94897d537b31	42	U8 i,j;
astroboy	0:94897d537b31	43	U8 *memory;
astroboy	0:94897d537b31	44	P_MemBlk memBlk;
astroboy	0:94897d537b31	45	memory = memBuf;
astroboy	0:94897d537b31	46
astroboy	0:94897d537b31	47	#if CFG_PAR_CHECKOUT_EN >0 /* Check validity of parameter */
astroboy	0:94897d537b31	48	if(memBuf == Co_NULL)
astroboy	0:94897d537b31	49	{
astroboy	0:94897d537b31	50	return E_CREATE_FAIL;
astroboy	0:94897d537b31	51	}
astroboy	0:94897d537b31	52	if(blockSize == 0)
astroboy	0:94897d537b31	53	{
astroboy	0:94897d537b31	54	return E_CREATE_FAIL;
astroboy	0:94897d537b31	55	}
astroboy	0:94897d537b31	56	if((blockSize&0x3) != 0)
astroboy	0:94897d537b31	57	{
astroboy	0:94897d537b31	58	return E_CREATE_FAIL;
astroboy	0:94897d537b31	59	}
astroboy	0:94897d537b31	60	if(blockNum<=1)
astroboy	0:94897d537b31	61	{
astroboy	0:94897d537b31	62	return E_CREATE_FAIL;
astroboy	0:94897d537b31	63	}
astroboy	0:94897d537b31	64	#endif
astroboy	0:94897d537b31	65
astroboy	0:94897d537b31	66	OsSchedLock(); /* Lock schedule */
astroboy	0:94897d537b31	67	for(i = 0; i < CFG_MAX_MM; i++)
astroboy	0:94897d537b31	68	{
astroboy	0:94897d537b31	69	if((MemoryIDVessel & (1 << i)) == 0) /* Is free memory ID? */
astroboy	0:94897d537b31	70	{
astroboy	0:94897d537b31	71	MemoryIDVessel \|= (1<<i); /* Yes,assign ID to this memory block */
astroboy	0:94897d537b31	72	OsSchedUnlock(); /* Unlock schedule */
astroboy	0:94897d537b31	73	MemoryTbl[i].memAddr = memory;/* Initialize memory control block*/
astroboy	0:94897d537b31	74	MemoryTbl[i].freeBlock = memory;
astroboy	0:94897d537b31	75	MemoryTbl[i].blockSize = blockSize;
astroboy	0:94897d537b31	76	MemoryTbl[i].blockNum = blockNum;
astroboy	0:94897d537b31	77	memBlk = (P_MemBlk)memory; /* Bulid list in this memory block*/
astroboy	0:94897d537b31	78	for(j=0;j<blockNum-1;j++)
astroboy	0:94897d537b31	79	{
astroboy	0:94897d537b31	80	memory = memory+blockSize;
astroboy	0:94897d537b31	81	memBlk->nextBlock = (P_MemBlk)memory;
astroboy	0:94897d537b31	82	memBlk = memBlk->nextBlock;
astroboy	0:94897d537b31	83	}
astroboy	0:94897d537b31	84	memBlk->nextBlock = Co_NULL;
astroboy	0:94897d537b31	85	return i; /* Return memory block ID */
astroboy	0:94897d537b31	86	}
astroboy	0:94897d537b31	87	}
astroboy	0:94897d537b31	88	OsSchedUnlock(); /* Unlock schedule */
astroboy	0:94897d537b31	89	return E_CREATE_FAIL; /* Error return */
astroboy	0:94897d537b31	90	}
astroboy	0:94897d537b31	91
astroboy	0:94897d537b31	92
astroboy	0:94897d537b31	93	/**
astroboy	0:94897d537b31	94	*******************************************************************************
astroboy	0:94897d537b31	95	* @brief Delete a memory partition
astroboy	0:94897d537b31	96	* @param[in] mmID Specify memory partition that want to delete.
astroboy	0:94897d537b31	97	* @param[out] None
astroboy	0:94897d537b31	98	* @retval E_INVALID_ID The memory partition id passed was invalid,delete fail.
astroboy	0:94897d537b31	99	* @retval E_OK Delete successful.
astroboy	0:94897d537b31	100	*
astroboy	0:94897d537b31	101	* @par Description
astroboy	0:94897d537b31	102	* @details This function is called to Delete a memory partition.
astroboy	0:94897d537b31	103	*******************************************************************************
astroboy	0:94897d537b31	104	*/
astroboy	0:94897d537b31	105	StatusType CoDelMemoryPartition(OS_MMID mmID)
astroboy	0:94897d537b31	106	{
astroboy	0:94897d537b31	107	P_MM memCtl;
astroboy	0:94897d537b31	108	#if CFG_PAR_CHECKOUT_EN >0 /* Check validity of parameter */
astroboy	0:94897d537b31	109	if(mmID >= CFG_MAX_MM)
astroboy	0:94897d537b31	110	{
astroboy	0:94897d537b31	111	return E_INVALID_ID;
astroboy	0:94897d537b31	112	}
astroboy	0:94897d537b31	113	if( ((1<<mmID)&MemoryIDVessel) == 0)
astroboy	0:94897d537b31	114	{
astroboy	0:94897d537b31	115	return E_INVALID_ID;
astroboy	0:94897d537b31	116	}
astroboy	0:94897d537b31	117	#endif
astroboy	0:94897d537b31	118	OsSchedLock(); /* Lock schedule */
astroboy	0:94897d537b31	119	memCtl = &MemoryTbl[mmID]; /* Release memory control block */
astroboy	0:94897d537b31	120	MemoryIDVessel &= ~(1<<mmID);
astroboy	0:94897d537b31	121	OsSchedUnlock(); /* Unlock schedule */
astroboy	0:94897d537b31	122
astroboy	0:94897d537b31	123	memCtl->memAddr = Co_NULL;
astroboy	0:94897d537b31	124	memCtl->freeBlock = Co_NULL;
astroboy	0:94897d537b31	125	memCtl->blockSize = 0;
astroboy	0:94897d537b31	126	memCtl->blockNum = 0;
astroboy	0:94897d537b31	127	return E_OK; /* Return OK */
astroboy	0:94897d537b31	128	}
astroboy	0:94897d537b31	129
astroboy	0:94897d537b31	130
astroboy	0:94897d537b31	131	/**
astroboy	0:94897d537b31	132	*******************************************************************************
astroboy	0:94897d537b31	133	* @brief Get free block number in a memory partition
astroboy	0:94897d537b31	134	* @param[in] mmID Specify memory partition.
astroboy	0:94897d537b31	135	*
astroboy	0:94897d537b31	136	* @param[out] E_INVALID_ID Invalid ID was passed and get counter failure.
astroboy	0:94897d537b31	137	* @param[out] E_OK Get current counter successful.
astroboy	0:94897d537b31	138	* @retval fbNum The number of free block.
astroboy	0:94897d537b31	139	*
astroboy	0:94897d537b31	140	* @par Description
astroboy	0:94897d537b31	141	* @details This function is called to get free block number in a memory
astroboy	0:94897d537b31	142	* partition.
astroboy	0:94897d537b31	143	*******************************************************************************
astroboy	0:94897d537b31	144	*/
astroboy	0:94897d537b31	145	U32 CoGetFreeBlockNum(OS_MMID mmID,StatusType* perr)
astroboy	0:94897d537b31	146	{
astroboy	0:94897d537b31	147	U32 fbNum;
astroboy	0:94897d537b31	148	P_MM memCtl;
astroboy	0:94897d537b31	149	P_MemBlk memBlk;
astroboy	0:94897d537b31	150	#if CFG_PAR_CHECKOUT_EN >0 /* Check validity of parameter */
astroboy	0:94897d537b31	151	if(mmID >= CFG_MAX_MM)
astroboy	0:94897d537b31	152	{
astroboy	0:94897d537b31	153	*perr = E_INVALID_ID;
astroboy	0:94897d537b31	154	return 0;
astroboy	0:94897d537b31	155	}
astroboy	0:94897d537b31	156	if( ((1<<mmID)&MemoryIDVessel) == 0)
astroboy	0:94897d537b31	157	{
astroboy	0:94897d537b31	158	perr = E_INVALID_ID; / Invalid memory id,return 0 */
astroboy	0:94897d537b31	159	return 0;
astroboy	0:94897d537b31	160	}
astroboy	0:94897d537b31	161	#endif
astroboy	0:94897d537b31	162	memCtl = &MemoryTbl[mmID];
astroboy	0:94897d537b31	163	OsSchedLock(); /* Lock schedule */
astroboy	0:94897d537b31	164	memBlk = (P_MemBlk)(memCtl->freeBlock);/* Get the free item in memory list*/
astroboy	0:94897d537b31	165	fbNum = 0;
astroboy	0:94897d537b31	166	while(memBlk != Co_NULL) /* Get counter of free item */
astroboy	0:94897d537b31	167	{
astroboy	0:94897d537b31	168	fbNum++;
astroboy	0:94897d537b31	169	memBlk = memBlk->nextBlock; /* Get next free iterm */
astroboy	0:94897d537b31	170	}
astroboy	0:94897d537b31	171	OsSchedUnlock(); /* Unlock schedul */
astroboy	0:94897d537b31	172	*perr = E_OK;
astroboy	0:94897d537b31	173	return fbNum; /* Return the counter of free item */
astroboy	0:94897d537b31	174	}
astroboy	0:94897d537b31	175
astroboy	0:94897d537b31	176
astroboy	0:94897d537b31	177	/**
astroboy	0:94897d537b31	178	*******************************************************************************
astroboy	0:94897d537b31	179	* @brief Get a memory buffer from memory partition
astroboy	0:94897d537b31	180	* @param[in] mmID Specify memory partition that want to assign buffer.
astroboy	0:94897d537b31	181	* @param[out] None
astroboy	0:94897d537b31	182	* @retval Co_NULL Assign buffer fail.
astroboy	0:94897d537b31	183	* @retval others Assign buffer successful,and return the buffer pointer.
astroboy	0:94897d537b31	184	*
astroboy	0:94897d537b31	185	* @par Description
astroboy	0:94897d537b31	186	* @details This function is called to Delete a memory partition.
astroboy	0:94897d537b31	187	*******************************************************************************
astroboy	0:94897d537b31	188	*/
astroboy	0:94897d537b31	189	void* CoGetMemoryBuffer(OS_MMID mmID)
astroboy	0:94897d537b31	190	{
astroboy	0:94897d537b31	191	P_MM memCtl;
astroboy	0:94897d537b31	192	P_MemBlk memBlk;
astroboy	0:94897d537b31	193	#if CFG_PAR_CHECKOUT_EN >0 /* Check validity of parameter */
astroboy	0:94897d537b31	194	if(mmID >= CFG_MAX_MM)
astroboy	0:94897d537b31	195	{
astroboy	0:94897d537b31	196	return Co_NULL;
astroboy	0:94897d537b31	197	}
astroboy	0:94897d537b31	198	if( ((1<<mmID)&MemoryIDVessel) == 0)
astroboy	0:94897d537b31	199	{
astroboy	0:94897d537b31	200	return Co_NULL;
astroboy	0:94897d537b31	201	}
astroboy	0:94897d537b31	202	#endif
astroboy	0:94897d537b31	203	memCtl = &MemoryTbl[mmID];
astroboy	0:94897d537b31	204	OsSchedLock(); /* Lock schedule */
astroboy	0:94897d537b31	205	if(memCtl->freeBlock == Co_NULL ) /* Is there no free item in memory list */
astroboy	0:94897d537b31	206	{
astroboy	0:94897d537b31	207	OsSchedUnlock(); /* Unlock schedule */
astroboy	0:94897d537b31	208	return Co_NULL; /* Yes,error return */
astroboy	0:94897d537b31	209	}
astroboy	0:94897d537b31	210	memBlk = (P_MemBlk)memCtl->freeBlock; /* Get free memory block */
astroboy	0:94897d537b31	211	memCtl->freeBlock = (U8)memBlk->nextBlock; / Reset the first free item */
astroboy	0:94897d537b31	212	OsSchedUnlock(); /* Unlock schedule */
astroboy	0:94897d537b31	213	return memBlk; /* Return free memory block address */
astroboy	0:94897d537b31	214	}
astroboy	0:94897d537b31	215
astroboy	0:94897d537b31	216
astroboy	0:94897d537b31	217
astroboy	0:94897d537b31	218	/**
astroboy	0:94897d537b31	219	*******************************************************************************
astroboy	0:94897d537b31	220	* @brief Free a memory buffer to memory partition
astroboy	0:94897d537b31	221	* @param[in] mmID Specify memory partition.
astroboy	0:94897d537b31	222	* @param[in] buf Specify memory buffer that want to free.
astroboy	0:94897d537b31	223	* @param[out] None
astroboy	0:94897d537b31	224	* @retval E_INVALID_ID The memory partition id passed was invalid.
astroboy	0:94897d537b31	225	* @retval E_INVALID_PARAMETER The parameter passed was invalid.
astroboy	0:94897d537b31	226	* @retval E_OK Free successful.
astroboy	0:94897d537b31	227	*
astroboy	0:94897d537b31	228	* @par Description
astroboy	0:94897d537b31	229	* @details This function is called to Delete a memory partition.
astroboy	0:94897d537b31	230	*******************************************************************************
astroboy	0:94897d537b31	231	*/
astroboy	0:94897d537b31	232	StatusType CoFreeMemoryBuffer(OS_MMID mmID,void* buf)
astroboy	0:94897d537b31	233	{
astroboy	0:94897d537b31	234	P_MM memCtl;
astroboy	0:94897d537b31	235	P_MemBlk memBlk;
astroboy	0:94897d537b31	236	#if CFG_PAR_CHECKOUT_EN >0 /* Check validity of parameter */
astroboy	0:94897d537b31	237	if(mmID >= CFG_MAX_MM)
astroboy	0:94897d537b31	238	{
astroboy	0:94897d537b31	239	return E_INVALID_ID;
astroboy	0:94897d537b31	240	}
astroboy	0:94897d537b31	241	if( ((1<<mmID)&MemoryIDVessel) == 0)
astroboy	0:94897d537b31	242	{
astroboy	0:94897d537b31	243	return E_INVALID_ID;
astroboy	0:94897d537b31	244	}
astroboy	0:94897d537b31	245	if(buf == Co_NULL)
astroboy	0:94897d537b31	246	{
astroboy	0:94897d537b31	247	return E_INVALID_PARAMETER;
astroboy	0:94897d537b31	248	}
astroboy	0:94897d537b31	249	#endif
astroboy	0:94897d537b31	250
astroboy	0:94897d537b31	251	memCtl = &MemoryTbl[mmID];
astroboy	0:94897d537b31	252	#if CFG_PAR_CHECKOUT_EN >0 /* Check validity of parameter */
astroboy	0:94897d537b31	253	if((U32)buf < (U32)(memCtl->memAddr))
astroboy	0:94897d537b31	254	{
astroboy	0:94897d537b31	255	return E_INVALID_PARAMETER;
astroboy	0:94897d537b31	256	}
astroboy	0:94897d537b31	257	if((U32)buf > (U32)(memCtl->memAddr + memCtl->blockSize*memCtl->blockNum))
astroboy	0:94897d537b31	258	{
astroboy	0:94897d537b31	259	return E_INVALID_PARAMETER;
astroboy	0:94897d537b31	260	}
astroboy	0:94897d537b31	261	if(((U32)buf - (U32)(memCtl->memAddr))%(memCtl->blockSize) != 0)
astroboy	0:94897d537b31	262	{
astroboy	0:94897d537b31	263	return E_INVALID_PARAMETER;
astroboy	0:94897d537b31	264	}
astroboy	0:94897d537b31	265	#endif
astroboy	0:94897d537b31	266	memBlk = (P_MemBlk)buf; /* Reset the first free item */
astroboy	0:94897d537b31	267	OsSchedLock();
astroboy	0:94897d537b31	268	memBlk->nextBlock = (P_MemBlk)memCtl->freeBlock;
astroboy	0:94897d537b31	269	memCtl->freeBlock = buf;
astroboy	0:94897d537b31	270	OsSchedUnlock();
astroboy	0:94897d537b31	271	return E_OK; /* Return OK */
astroboy	0:94897d537b31	272	}
astroboy	0:94897d537b31	273
astroboy	0:94897d537b31	274	#endif
astroboy	0:94897d537b31	275

Repository toolbox

Export to desktop IDE

Build repository

Repository details

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

Who changed what in which revision?

Repository toolbox

Repository details

Important Information for this Arm website

Access Warning