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enhanced xma to accept an external zone

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This commit is contained in:
hyunghwan.chung 2020-11-01 19:57:41 +00:00
parent 8b1dd90901
commit 33dea50f9b
5 changed files with 31 additions and 25 deletions
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2
moo/lib/Makefile.am
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@ -41,6 +41,7 @@ pkginclude_HEADERS = \
moo-opt.h \
moo-rbt.h \
moo-utl.h \
moo-xma.h \
moo-std.h
##################################################
@ -61,7 +62,6 @@ libmoo_la_SOURCES = \
moo-rbt.h \
moo-utl.h \
moo-prv.h \
moo-xma.h \
pack1.h \
unpack.h \
bigint.c \

2
moo/lib/Makefile.in
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@ -440,6 +440,7 @@ pkginclude_HEADERS = \
moo-opt.h \
moo-rbt.h \
moo-utl.h \
moo-xma.h \
moo-std.h
pkglib_LTLIBRARIES = libmoo.la libmoox.la
@ -456,7 +457,6 @@ libmoo_la_SOURCES = \
moo-rbt.h \
moo-utl.h \
moo-prv.h \
moo-xma.h \
pack1.h \
unpack.h \
bigint.c \

3
moo/lib/moo-xma.h
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@ -91,6 +91,7 @@ struct moo_xma_t
moo_uint8_t* start; /* zone beginning */
moo_uint8_t* end; /* zone end */
int external;
/** pointer array to free memory blocks */
moo_xma_fblk_t* xfree[MOO_XMA_FIXED + MOO_XMA_SIZE_BITS + 1];
@ -135,6 +136,7 @@ extern "C" {
MOO_EXPORT moo_xma_t* moo_xma_open (
moo_mmgr_t* mmgr, /**< memory manager */
moo_oow_t xtnsize, /**< extension size in bytes */
void* zoneptr,
moo_oow_t zonesize /**< zone size in bytes */
);
@ -171,6 +173,7 @@ static MOO_INLINE void* moo_xma_getxtn (moo_xma_t* xma) { return (void*)(xma + 1
MOO_EXPORT int moo_xma_init (
moo_xma_t* xma, /**< memory allocator */
moo_mmgr_t* mmgr, /**< memory manager */
void* zoneptr, /**< pointer to memory zone. if #MOO_NULL, a zone is auto-created */
moo_oow_t zonesize /**< zone size in bytes */
);

33
moo/lib/xma.c
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@ -125,14 +125,14 @@ static MOO_INLINE moo_oow_t getxfi (moo_xma_t* xma, moo_oow_t size)
return xfi;
}
moo_xma_t* moo_xma_open (moo_mmgr_t* mmgr, moo_oow_t xtnsize, moo_oow_t zonesize)
moo_xma_t* moo_xma_open (moo_mmgr_t* mmgr, moo_oow_t xtnsize, void* zoneptr, moo_oow_t zonesize)
{
moo_xma_t* xma;
xma = (moo_xma_t*)MOO_MMGR_ALLOC(mmgr, MOO_SIZEOF(*xma) + xtnsize);
if (MOO_UNLIKELY(!xma)) return MOO_NULL;
if (moo_xma_init(xma, mmgr, zonesize) <= -1)
if (moo_xma_init(xma, mmgr, zoneptr, zonesize) <= -1)
{
MOO_MMGR_FREE (mmgr, xma);
return MOO_NULL;
@ -148,20 +148,28 @@ void moo_xma_close (moo_xma_t* xma)
MOO_MMGR_FREE (xma->_mmgr, xma);
}
int moo_xma_init (moo_xma_t* xma, moo_mmgr_t* mmgr, moo_oow_t zonesize)
int moo_xma_init (moo_xma_t* xma, moo_mmgr_t* mmgr, void* zoneptr, moo_oow_t zonesize)
{
moo_xma_fblk_t* free;
moo_oow_t xfi;
if (!zoneptr)
{
/* round 'zonesize' to be the multiples of ALIGN */
zonesize = MOO_ALIGN_POW2(zonesize, 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 = MOO_MMGR_ALLOC(mmgr, zonesize);
if (MOO_UNLIKELY(!free)) return -1;
zoneptr = MOO_MMGR_ALLOC(mmgr, zonesize);
if (MOO_UNLIKELY(!zoneptr)) return -1;
}
else
{
xma->external = 1;
}
free = (moo_xma_fblk_t*)zoneptr;
/* initialize the header part of the free chunk. the entire zone is a single free block */
free->prev_size = 0;
@ -201,7 +209,7 @@ void moo_xma_fini (moo_xma_t* xma)
{
/* the head must point to the free chunk allocated in init().
* let's deallocate it */
MOO_MMGR_FREE (xma->_mmgr, xma->start);
if (!xma->external) MOO_MMGR_FREE (xma->_mmgr, xma->start);
xma->start = MOO_NULL;
xma->end = MOO_NULL;
}
@ -650,7 +658,7 @@ void moo_xma_free (moo_xma_t* xma, void* b)
/* attach blk to the free list */
attach_to_freelist (xma, (moo_xma_fblk_t*)blk);
}
else if ((moo_uint8_t*)x < xma->end && x->avail)
else if ((moo_uint8_t*)x >= xma->start && x->avail)
{
/*
* Merge the block with the previous block
@ -661,17 +669,12 @@ void moo_xma_free (moo_xma_t* xma, void* b)
* +------------+------------+------------+
* | X | | Y |
* +------------+------------+------------+
* ^ | ^ |
* +------+ +------+
*
*
* +---------------------+
* | v
* +-------------------------+------------+
* | X | Y |
* +-------------------------+------------+
* ^ |
* +--------------------+
*
*
*
*/
#if defined(MOO_XMA_ENABLE_STAT)

2
moo/t/t-005.c
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@ -41,7 +41,7 @@ int main ()
void* ptr1, * ptr2, * ptr3;
xma = moo_xma_open(&sys_mmgr, 0, 100000);
xma = moo_xma_open(&sys_mmgr, 0, MOO_NULL, 100000);
ptr1 = moo_xma_alloc(xma, 1000);