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documented xma.h, though terse

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hyung-hwan
2010-08-05 01:25:48 +00:00
parent e5e0bc9a78
commit 65698c30a2
11 changed files with 157 additions and 572 deletions
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23
qse/lib/cmn/xma.c
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@ -104,7 +104,8 @@ static QSE_INLINE_ALWAYS qse_size_t getxfi (qse_xma_t* xma, qse_size_t size)
return xfi;
}
qse_xma_t* qse_xma_open (qse_mmgr_t* mmgr, qse_size_t ext, qse_size_t size)
qse_xma_t* qse_xma_open (
qse_mmgr_t* mmgr, qse_size_t xtnsize, qse_size_t zonesize)
{
qse_xma_t* xma;
@ -118,10 +119,10 @@ qse_xma_t* qse_xma_open (qse_mmgr_t* mmgr, qse_size_t ext, qse_size_t size)
if (mmgr == QSE_NULL) return QSE_NULL;
}
xma = (qse_xma_t*) QSE_MMGR_ALLOC (mmgr, QSE_SIZEOF(*xma) + ext);
xma = (qse_xma_t*) QSE_MMGR_ALLOC (mmgr, QSE_SIZEOF(*xma) + xtnsize);
if (xma == QSE_NULL) return QSE_NULL;
if (qse_xma_init (xma, mmgr, size) == QSE_NULL)
if (qse_xma_init (xma, mmgr, zonesize) == QSE_NULL)
{
QSE_MMGR_FREE (mmgr, xma);
return QSE_NULL;
@ -136,22 +137,22 @@ void qse_xma_close (qse_xma_t* xma)
QSE_MMGR_FREE (xma->mmgr, xma);
}
qse_xma_t* qse_xma_init (qse_xma_t* xma, qse_mmgr_t* mmgr, qse_size_t size)
qse_xma_t* qse_xma_init (qse_xma_t* xma, qse_mmgr_t* mmgr, qse_size_t zonesize)
{
qse_xma_blk_t* free;
qse_size_t xfi;
size = ((size + ALIGN - 1) / ALIGN) * ALIGN;
/* adjust 'size' to be large enough to hold a single smallest block */
if (size < MINBLKLEN) size = MINBLKLEN;
zonesize = ((zonesize + ALIGN - 1) / ALIGN) * ALIGN;
/* adjust 'zonesize' to be large enough to hold a single smallest block */
if (zonesize < MINBLKLEN) zonesize = MINBLKLEN;
/* allocate a memory chunk to use for actual memory allocation */
free = QSE_MMGR_ALLOC (mmgr, size);
free = QSE_MMGR_ALLOC (mmgr, zonesize);
if (free == QSE_NULL) return QSE_NULL;
/* initialize the header part of the free chunk */
free->avail = 1;
free->size = size - HDRSIZE; /* size excluding the block header */
free->size = zonesize - HDRSIZE; /* size excluding the block header */
free->f.prev = QSE_NULL;
free->f.next = QSE_NULL;
free->b.next = QSE_NULL;
@ -168,9 +169,9 @@ qse_xma_t* qse_xma_init (qse_xma_t* xma, qse_mmgr_t* mmgr, qse_size_t size)
/* initialize some statistical variables */
#ifdef QSE_XMA_ENABLE_STAT
xma->stat.total = size;
xma->stat.total = zonesize;
xma->stat.alloc = 0;
xma->stat.avail = size - HDRSIZE;
xma->stat.avail = zonesize - HDRSIZE;
xma->stat.nfree = 1;
xma->stat.nused = 0;
#endif