ClRcT
clPoolShrink(
ClPoolT poolHandle,
const ClPoolShrinkOptionsT* pShrinkOptions)
{
ClRcT rc = CL_OK;
ClPoolHeaderT* pPoolHeader = (ClPoolHeaderT*)poolHandle;
ClPoolShrinkOptionsT defaultShrinkOptions;
defaultShrinkOptions.shrinkFlags = CL_POOL_SHRINK_DEFAULT;
NULL_CHECK (pPoolHeader);
if (pShrinkOptions == NULL)
{
pShrinkOptions = &defaultShrinkOptions;
}
CL_POOL_LOG(CL_LOG_TRACE,
"Shrinking %d byte pool of %d chunksize",
pPoolHeader->poolConfig.incrementPoolSize,
pPoolHeader->poolConfig.chunkSize);
CL_POOL_LOCK (pPoolHeader);
rc = CL_POOL_SHRINK_FREELIST (pPoolHeader, pShrinkOptions);
CL_POOL_UNLOCK(pPoolHeader);
if(rc != CL_OK)
{
CL_DEBUG_PRINT (CL_DEBUG_ERROR, ("Error in shrinking free list\n"));
CL_POOL_LOG(CL_LOG_ERROR,
"Error shrinking %d byte pool of %d chunksize",
pPoolHeader->poolConfig.incrementPoolSize,
pPoolHeader->poolConfig.chunkSize);
}
return rc;
}
ClRcT
clPoolFree(
ClUint8T* pChunk,
void* pCookie)
{
ClRcT rc = CL_OK;
ClPoolHeaderT* pPoolHeader = NULL;
ClExtendedPoolHeaderT* pExtendedPoolHeader = NULL;
ClUint32T freeChunk = 0;
ClUint32T chunkSize = 0;
ClFreeListHeaderT* pCurrentFreeList = NULL;
NULL_CHECK (pChunk);
NULL_CHECK (pCookie);
pExtendedPoolHeader = (ClExtendedPoolHeaderT*)pCookie;
pPoolHeader = pExtendedPoolHeader->pPoolHeader;
CL_POOL_LOG(CL_LOG_SEV_TRACE,"freeing chunk pChunk = %p,extended pool = %p\n", pChunk,(void*)pExtendedPoolHeader);
CL_POOL_LOCK (pPoolHeader);
chunkSize = pPoolHeader->poolConfig.chunkSize;
CL_POOL_REVOKE_SIZE(pPoolHeader->flags,chunkSize);
CL_POOL_FREE_LIST_GET (pChunk, pExtendedPoolHeader, pCurrentFreeList);
pCurrentFreeList->pChunk = (ClUint8T*)pChunk;
pCurrentFreeList->pNextFreeChunk = pExtendedPoolHeader->pFirstFreeChunk;
pExtendedPoolHeader->pFirstFreeChunk = pCurrentFreeList;
CL_POOL_STATS_UPDATE_FREES (pPoolHeader);
freeChunk = ++pExtendedPoolHeader->numFreeChunks;
if (freeChunk == 1)
{
/*Was full before. Move it to partial*/
CL_POOL_LOG(CL_LOG_SEV_TRACE,"Dequeuing extended pool %p from full list and moving the extended pool to partial list\n", (void*)pExtendedPoolHeader);
CL_POOL_EXTENDED_FULLLIST_DEQUEUE (pPoolHeader, pExtendedPoolHeader);
CL_POOL_EXTENDED_PARTIALLIST_QUEUE (pPoolHeader, pExtendedPoolHeader);
}
if (freeChunk == pExtendedPoolHeader->numChunks)
{
/*
* Add to the free extended pool list after deleting from the partial
* list
*/
CL_POOL_LOG(CL_LOG_SEV_TRACE, "Dequeuing extended pool %p from partial list and moving the extended pool to free list\n", (void*)pExtendedPoolHeader);
CL_POOL_EXTENDED_PARTIALLIST_DEQUEUE(pPoolHeader,pExtendedPoolHeader);
CL_POOL_EXTENDED_FREELIST_QUEUE(pPoolHeader,pExtendedPoolHeader);
}
CL_POOL_UNLOCK(pPoolHeader);
rc = CL_OK;
return rc;
}
static
ClRcT
clPoolShrinkList(
ClPoolHeaderT *pPoolHeader,
ClExtendedListT *pList,
const ClPoolShrinkOptionsT *pShrinkOptions)
{
ClExtendedPoolHeaderT *pExtendedPoolHeader = NULL;
ClExtendedPoolHeaderT *pNext = NULL;
ClUint32T numExtendedFreePools = 0;
ClUint32T i;
ClRcT rc = CL_OK;
numExtendedFreePools = CL_POOL_EXTENDED_LIST_COUNT (pList);
switch(pShrinkOptions->shrinkFlags)
{
case CL_POOL_SHRINK_DEFAULT:
/*50 % of the free list*/
numExtendedFreePools /= 2;
break;
case CL_POOL_SHRINK_ONE:
numExtendedFreePools = CL_MIN (1, numExtendedFreePools);
break;
default:
case CL_POOL_SHRINK_ALL:
;
break;
}
if (numExtendedFreePools == 0)
{
CL_POOL_LOG(CL_LOG_SEV_WARNING,"No free list to shrink");
goto out;
}
for(i = 0, pExtendedPoolHeader = pList->pHeadExtendedList;
i < numExtendedFreePools && pExtendedPoolHeader;
++i)
{
pNext = pExtendedPoolHeader->pNext;
CL_POOL_EXTENDED_LIST_DEQUEUE(pList, pExtendedPoolHeader);
rc = clExtendedPoolDestroy (pPoolHeader, pExtendedPoolHeader);
if(rc != CL_OK)
{
CL_POOL_LOG(CL_LOG_SEV_ERROR,"Error in destroying extended pool");
goto out;
}
pExtendedPoolHeader = pNext;
}
out:
return rc;
}
static
ClRcT
clPoolDestroyWithForce(
ClPoolHeaderT *pPoolHeader,
ClBoolT forceFlag)
{
ClPoolShrinkOptionsT shrinkOptions;
ClRcT rc = CL_POOL_RC(CL_ERR_OP_NOT_PERMITTED);
shrinkOptions.shrinkFlags = CL_POOL_SHRINK_ALL;
if (forceFlag == CL_FALSE
&& (!CL_POOL_EXTENDED_PARTIALLIST_EMPTY (pPoolHeader)
|| !CL_POOL_EXTENDED_FULLLIST_EMPTY (pPoolHeader)))
{
CL_POOL_LOG(CL_LOG_SEV_WARNING, "Warning!!Destroy called when pool is being used. Chunk size:%d", pPoolHeader->poolConfig.chunkSize);
goto out;
}
rc = CL_POOL_SHRINK_FREELIST (pPoolHeader, &shrinkOptions);
if (rc != CL_OK)
{
CL_POOL_LOG(CL_LOG_SEV_ERROR, "Error shrinking pools free list for chunk size:%d", pPoolHeader->poolConfig.chunkSize);
goto out;
}
if (!CL_POOL_EXTENDED_PARTIALLIST_EMPTY(pPoolHeader))
{
CL_POOL_LOG(CL_LOG_SEV_WARNING,
"Warning!!Partial list isnt empty for chunk size:%d Count :%d\n",
pPoolHeader->poolConfig.chunkSize,
CL_POOL_EXTENDED_PARTIALLIST_COUNT (pPoolHeader));
rc = CL_POOL_SHRINK_PARTIALLIST (pPoolHeader, &shrinkOptions);
}
if (!CL_POOL_EXTENDED_FULLLIST_EMPTY (pPoolHeader))
{
CL_POOL_LOG(CL_LOG_SEV_WARNING,
"Warning !!Full list isnt empty for chunk size:%d Count :%d\n",
pPoolHeader->poolConfig.chunkSize,
CL_POOL_EXTENDED_FULLLIST_COUNT (pPoolHeader));
rc = CL_POOL_SHRINK_FULLLIST (pPoolHeader, &shrinkOptions);
}
else
{
rc = CL_OK;
}
out:
return rc;
}
static
ClRcT
clPoolAllocateExtendedPool(
ClPoolHeaderT* pPoolHeader,
ClExtendedPoolHeaderT* pExtendedPoolHeader)
{
ClRcT rc = CL_OK;
ClUint32T chunkSize = pPoolHeader->poolConfig.chunkSize;
ClUint32T incrementPoolSize = pPoolHeader->poolConfig.incrementPoolSize;
rc = CL_POOL_RC (CL_ERR_NO_MEMORY);
if ((pExtendedPoolHeader->pExtendedPoolStart =
(ClUint8T*)CL_POOL_ALLOC_EXT (incrementPoolSize)) == NULL)
{
CL_POOL_LOG(CL_LOG_SEV_ERROR,"Error allocating memory of size:%d\n", incrementPoolSize);
goto out;
}
pExtendedPoolHeader->pPoolHeader = pPoolHeader;
pExtendedPoolHeader->numChunks = incrementPoolSize/chunkSize;
pExtendedPoolHeader->numFreeChunks = pExtendedPoolHeader->numChunks;
rc = clPoolPartitionExtendedPool (pExtendedPoolHeader);
if (rc != CL_OK)
{
goto out_free;
}
/*Add this extended pool to the free list*/
CL_POOL_LOG(CL_LOG_SEV_TRACE,"Adding extended pool %p to free list",(void*)pExtendedPoolHeader);
CL_POOL_EXTENDED_FREELIST_QUEUE(pPoolHeader,pExtendedPoolHeader);
goto out;
out_free:
CL_POOL_FREE_EXTERNAL (pPoolHeader->flags,
pExtendedPoolHeader->pExtendedPoolStart, incrementPoolSize);
out:
return rc;
}
ClRcT
clPoolDestroy(
ClPoolT poolHandle)
{
ClRcT rc = CL_OK;
ClPoolHeaderT *pPoolHeader = (ClPoolHeaderT*)poolHandle;
ClPoolFlagsT flags;
NULL_CHECK (pPoolHeader);
flags = pPoolHeader->flags;
CL_POOL_LOG(CL_LOG_NOTICE,
"Destroying %d byte pool of %d chunksize",
pPoolHeader->poolConfig.incrementPoolSize,
pPoolHeader->poolConfig.chunkSize
);
CL_POOL_LOCK (pPoolHeader);
rc = clPoolDestroyWithForce (pPoolHeader, CL_FALSE);
CL_POOL_UNLOCK (pPoolHeader);
if (rc != CL_OK)
{
CL_DEBUG_PRINT (CL_DEBUG_ERROR, ("Error destroying the pool\n"));
CL_POOL_LOG(CL_LOG_ERROR,
"Error destroying %d byte pool of %d chunksize",
pPoolHeader->poolConfig.incrementPoolSize,
pPoolHeader->poolConfig.chunkSize);
goto out;
}
/*
* This is pretty dangerous and hence any users of this pool
* go for a toss.
* But destroy shouldnt be used on pre-defined pools
* with pools in use anyway.
*/
CL_POOL_LOCK_DESTROY (pPoolHeader);
CL_POOL_FREE_EXTERNAL (flags, (void*)pPoolHeader, sizeof (*pPoolHeader));
out:
return rc;
}
ClRcT
clPoolDestroyForce(
ClPoolT poolHandle)
{
ClRcT rc = CL_OK;
ClPoolHeaderT *pPoolHeader = (ClPoolHeaderT*)poolHandle;
ClPoolFlagsT flags;
NULL_CHECK (pPoolHeader);
flags = pPoolHeader->flags;
CL_POOL_LOG(CL_LOG_TRACE,
"Force destroying %d byte pool of %d chunksize",
pPoolHeader->poolConfig.incrementPoolSize,
pPoolHeader->poolConfig.chunkSize
);
CL_POOL_LOCK (pPoolHeader);
rc = clPoolDestroyWithForce (pPoolHeader, CL_TRUE);
CL_POOL_UNLOCK (pPoolHeader);
CL_POOL_LOCK_DESTROY (pPoolHeader);
CL_POOL_FREE_EXTERNAL (flags, (void*)pPoolHeader, sizeof (*pPoolHeader));
return rc;
}
static
ClRcT
clPoolPartitionExtendedPoolDebug(
ClExtendedPoolHeaderT *pExtendedPoolHeader)
{
register ClUint32T i;
ClFreeListHeaderT *pFreeList;
ClFreeListHeaderT *pCurrentFreeList;
ClUint8T *pCurrentChunkStart;
ClUint32T chunkSize = pExtendedPoolHeader->pPoolHeader->poolConfig.chunkSize;
ClUint32T numChunks = pExtendedPoolHeader->numChunks;
ClRcT rc = CL_POOL_RC(CL_ERR_NO_MEMORY);
pFreeList = (ClFreeListHeaderT*)CL_POOL_ALLOC_EXTERNAL
(pExtendedPoolHeader->pPoolHeader->flags,
sizeof (*pFreeList) * numChunks);
if (pFreeList == NULL)
{
CL_POOL_LOG(CL_LOG_SEV_ERROR,"Error allocating memory for freelist for chunk Size:%d",chunkSize);
goto out;
}
pCurrentChunkStart = pExtendedPoolHeader->pExtendedPoolStart;
pCurrentFreeList = pFreeList;
pExtendedPoolHeader->pFreeListStart = pFreeList;
pExtendedPoolHeader->pFirstFreeChunk = pCurrentFreeList;
pCurrentFreeList->pChunk = pCurrentChunkStart;
for(i = 0; i < numChunks - 1; ++i)
{
pCurrentChunkStart += chunkSize;
pCurrentFreeList->pNextFreeChunk = pCurrentFreeList + 1;
pCurrentFreeList->pNextFreeChunk->pChunk = pCurrentChunkStart;
++pCurrentFreeList;
}
pCurrentFreeList->pNextFreeChunk = NULL;
rc = CL_OK;
out:
return rc;
}
ClRcT
clPoolAllocate(
ClPoolT poolHandle,
ClUint8T** ppChunk,
void** ppCookie)
{
ClPoolHeaderT* pPoolHeader = NULL;
ClRcT rc = CL_OK;
ClFreeListHeaderT* pFreeChunk = NULL;
ClExtendedPoolHeaderT* pExtendedPoolHeader = NULL;
pPoolHeader = (ClPoolHeaderT*)poolHandle;
NULL_CHECK (pPoolHeader);
NULL_CHECK (ppChunk);
NULL_CHECK (ppCookie);
CL_POOL_LOCK (pPoolHeader);
if(CL_POOL_GRANT_SIZE(pPoolHeader->flags,
pPoolHeader->poolConfig.chunkSize) == CL_FALSE)
{
rc = CL_POOL_RC(CL_ERR_NO_MEMORY);
CL_DEBUG_PRINT(CL_DEBUG_ERROR,("Request of %d bytes would exceed process upper limit\n",pPoolHeader->poolConfig.chunkSize));
goto out_unlock;
}
/*Check for a partially full queue*/
if (CL_POOL_EXTENDED_PARTIALLIST_EMPTY (pPoolHeader))
{
/*Look for an extended pool in the free list*/
if (CL_POOL_EXTENDED_FREELIST_EMPTY (pPoolHeader))
{
/*Grow the extended pool*/
rc = clPoolExtend(poolHandle);
if(rc != CL_OK)
{
CL_DEBUG_PRINT (CL_DEBUG_ERROR,
("Pool extension error for chunksize:%d\n",
pPoolHeader->poolConfig.chunkSize));
CL_POOL_LOG(CL_LOG_ERROR,
"Pool allocate failed to extend %d byte pool of %d chunksize",
pPoolHeader->poolConfig.incrementPoolSize,
pPoolHeader->poolConfig.chunkSize);
goto out_unlock;
}
}
CL_POOL_EXTENDED_FREELIST_POP_DEQUEUE (pPoolHeader,
pExtendedPoolHeader);
CL_POOL_EXTENDED_PARTIALLIST_QUEUE (pPoolHeader ,pExtendedPoolHeader);
}
/*
* We are here when we have a free chunk:
* Point of no-return
*/
CL_POOL_EXTENDED_PARTIALLIST_POP (pPoolHeader, pExtendedPoolHeader);
pFreeChunk = pExtendedPoolHeader->pFirstFreeChunk;
pExtendedPoolHeader->pFirstFreeChunk = pFreeChunk->pNextFreeChunk;
*ppChunk = (ClUint8T*)pFreeChunk->pChunk;
*ppCookie = (void *)pExtendedPoolHeader;
CL_POOL_STATS_UPDATE_ALLOCS (pPoolHeader);
--pExtendedPoolHeader->numFreeChunks;
CL_DEBUG_PRINT (CL_DEBUG_TRACE,
("pExtendedPoolHeader = %p pExtendedPoolHeader->numFreeChunks "
"= %d pPoolHeader->poolConfig.chunkSize = %d from address = %p\n",
(void*)pExtendedPoolHeader, pExtendedPoolHeader->numFreeChunks,
pPoolHeader->poolConfig.chunkSize, (void*)pFreeChunk->pChunk));
/*
* Was free partially but now full.
* move it to full list.
*/
if (pExtendedPoolHeader->numFreeChunks == 0)
{
CL_DEBUG_PRINT (CL_DEBUG_TRACE,
("Dequeuing extended pool %p from partial list and queueing it to "
"full list\n", (void*)pExtendedPoolHeader));
CL_POOL_EXTENDED_PARTIALLIST_DEQUEUE (pPoolHeader, pExtendedPoolHeader);
CL_POOL_EXTENDED_FULLLIST_QUEUE (pPoolHeader, pExtendedPoolHeader);
}
out_unlock:
CL_POOL_UNLOCK (pPoolHeader);
return rc;
}
ClRcT
clPoolExtend(
ClPoolT poolHandle)
{
ClRcT rc = CL_OK;
ClPoolHeaderT* pPoolHeader = NULL;
ClExtendedPoolHeaderT* pExtendedPoolHeader = NULL;
pPoolHeader = (ClPoolHeaderT*)poolHandle;
NULL_CHECK (pPoolHeader);
CL_DEBUG_PRINT (CL_DEBUG_INFO,
("clPoolExtend() :: extendedPoolSize = %d, chunkSize = %d \n",
pPoolHeader->poolConfig.incrementPoolSize,
pPoolHeader->poolConfig.chunkSize));
rc = CL_POOL_RC (CL_ERR_NO_MEMORY);
if (CL_POOL_MAX_EXTENDED_POOLS (pPoolHeader))
{
CL_DEBUG_PRINT (CL_DEBUG_ERROR,
("POOL extend of %d byte pool failed.Max pool size :%d, "
"extended pools:%d\n",
pPoolHeader->poolConfig.chunkSize,
pPoolHeader->poolConfig.maxPoolSize,
pPoolHeader->stats.numExtendedPools));
goto out;
}
if((pExtendedPoolHeader =
(ClExtendedPoolHeaderT*)CL_POOL_ALLOC_EXTERNAL (pPoolHeader->flags,
sizeof (ClExtendedPoolHeaderT))) == NULL)
{
CL_DEBUG_PRINT (CL_DEBUG_ERROR,
("Error allocating memory for extended pool header, chunk "
"size:%d extended pool number:%d\n",
pPoolHeader->poolConfig.chunkSize,
pPoolHeader->stats.numExtendedPools));
goto out;
}
memset (pExtendedPoolHeader, 0, sizeof (*pExtendedPoolHeader));
CL_POOL_LOG(CL_LOG_TRACE,"Extending %d byte pool of %d chunkSize",
pPoolHeader->poolConfig.incrementPoolSize,
pPoolHeader->poolConfig.chunkSize);
/*Initialise the extended pool*/
rc = clPoolAllocateExtendedPool (pPoolHeader, pExtendedPoolHeader);
if (rc != CL_OK)
{
CL_POOL_LOG(CL_LOG_ERROR,
"Extended pool allocation of %d byte pool of %d chunksize failed",
pPoolHeader->poolConfig.incrementPoolSize,
pPoolHeader->poolConfig.chunkSize
);
CL_DEBUG_PRINT (CL_DEBUG_ERROR,
("Error allocating extended pool, chunk size:%d extended "
"pool number:%d\n",
pPoolHeader->poolConfig.chunkSize,
pPoolHeader->stats.numExtendedPools));
goto out_free;
}
CL_POOL_STATS_UPDATE_EXTENDED_POOLS_INCR(pPoolHeader);
rc = CL_OK;
goto out;
out_free:
CL_POOL_FREE_EXTERNAL (pPoolHeader->flags, pExtendedPoolHeader,
sizeof (*pExtendedPoolHeader));
out:
return rc;
}
ClRcT
clPoolCreate(
ClPoolT *pHandle,
ClPoolFlagsT flags,
const ClPoolConfigT *pPoolConfig)
{
ClRcT rc = CL_OK;
ClPoolHeaderT* pPoolHeader = NULL;
ClUint32T chunkSize = 0;
ClUint32T incrementPoolSize = 0;
ClUint32T extendedPools = 0;
ClUint32T i = 0;
NULL_CHECK (pPoolConfig);
NULL_CHECK (pHandle);
*pHandle = 0;
/* Validate the chunk config*/
rc = clPoolValidateConfig (pPoolConfig);
if(rc != CL_OK)
{
CL_DEBUG_PRINT (CL_DEBUG_ERROR, ("Invalid param\n"));
goto out;
}
chunkSize = pPoolConfig->chunkSize;
incrementPoolSize = pPoolConfig->incrementPoolSize;
extendedPools = pPoolConfig->initialPoolSize/incrementPoolSize;
rc = CL_POOL_RC (CL_ERR_NO_MEMORY);
if ((pPoolHeader = (ClPoolHeaderT*)CL_POOL_ALLOC_EXTERNAL
(flags, sizeof (*pPoolHeader))) == NULL)
{
CL_DEBUG_PRINT (CL_DEBUG_ERROR,
("Error in allocating memory for pool header, chunk size:%d\n",
chunkSize));
goto out;
}
memset (pPoolHeader, 0, sizeof (*pPoolHeader));
memcpy (&(pPoolHeader->poolConfig), pPoolConfig,
sizeof (pPoolHeader->poolConfig));
pPoolHeader->flags = (ClPoolFlagsT) (pPoolHeader->flags | flags);
rc = CL_POOL_LOCK_INIT (pPoolHeader);
if(CL_OK != rc)
{
CL_DEBUG_PRINT (CL_DEBUG_ERROR,
("CL_POOL_LOCK_INIT failed, rc=[%#X]\n", rc));
goto out;
}
/*Initialise the extended pool free,partial and full list*/
CL_POOL_EXTENDED_FREELIST_INIT (pPoolHeader);
CL_POOL_EXTENDED_PARTIALLIST_INIT (pPoolHeader);
CL_POOL_EXTENDED_FULLLIST_INIT (pPoolHeader);
if (extendedPools == 0)
{
rc = CL_OK;
goto out;
}
/*Create the initial extended pools*/
for (i = 0; i < extendedPools; ++i)
{
ClExtendedPoolHeaderT *pExtendedPoolHeader = NULL;
if ((pExtendedPoolHeader =
(ClExtendedPoolHeaderT*)CL_POOL_ALLOC_EXTERNAL (flags,
sizeof (*pExtendedPoolHeader))) == NULL)
{
CL_DEBUG_PRINT (CL_DEBUG_ERROR,
("Error allocating memory for extended pool header, chunk "
"size:%d extended pool number:%d\n", chunkSize, i));
goto out_free;
}
memset (pExtendedPoolHeader, 0, sizeof (*pExtendedPoolHeader));
/*Initialize the extended pool*/
rc = clPoolAllocateExtendedPool (pPoolHeader, pExtendedPoolHeader);
if(rc != CL_OK)
{
CL_POOL_FREE_EXTERNAL (flags, pExtendedPoolHeader,
sizeof (*pExtendedPoolHeader));
CL_DEBUG_PRINT (CL_DEBUG_ERROR,
("Error allocating extended pool, chunk size:%d extended "
"pool number:%d\n", chunkSize, i));
goto out_free;
}
CL_POOL_STATS_UPDATE_EXTENDED_POOLS_INCR(pPoolHeader);
}
*pHandle = (ClPoolT)pPoolHeader;
CL_POOL_LOG(CL_LOG_TRACE,
"%d extended pools created for %d byte pool with chunksize:%d",
extendedPools,
pPoolHeader->poolConfig.incrementPoolSize,
pPoolHeader->poolConfig.chunkSize);
rc = CL_OK;
goto out;
out_free:
if(pPoolHeader)
{
clPoolDestroy((ClPoolT)pPoolHeader);
}
out:
return rc;
}