added a primitive memory allocator

This commit is contained in:
hyung-hwan 2010-07-24 07:24:44 +00:00
parent a8e9033b86
commit a1a57732dd
6 changed files with 527 additions and 12 deletions

View File

@ -1,7 +1,7 @@
pkgincludedir = $(includedir)/qse/cmn pkgincludedir = $(includedir)/qse/cmn
pkginclude_HEADERS = \ pkginclude_HEADERS = \
mem.h chr.h str.h lda.h htb.h rbt.h \ mem.h xma.h chr.h str.h lda.h htb.h rbt.h \
rex.h sll.h dll.h opt.h tio.h \ rex.h sll.h dll.h opt.h tio.h \
fio.h pio.h sio.h time.h misc.h main.h stdio.h fio.h pio.h sio.h time.h misc.h main.h stdio.h

View File

@ -51,9 +51,9 @@ CONFIG_CLEAN_FILES =
CONFIG_CLEAN_VPATH_FILES = CONFIG_CLEAN_VPATH_FILES =
SOURCES = SOURCES =
DIST_SOURCES = DIST_SOURCES =
am__pkginclude_HEADERS_DIST = mem.h chr.h str.h lda.h htb.h rbt.h \ am__pkginclude_HEADERS_DIST = mem.h xma.h chr.h str.h lda.h htb.h \
rex.h sll.h dll.h opt.h tio.h fio.h pio.h sio.h time.h misc.h \ rbt.h rex.h sll.h dll.h opt.h tio.h fio.h pio.h sio.h time.h \
main.h stdio.h Mmgr.hpp StdMmgr.hpp Mmged.hpp misc.h main.h stdio.h Mmgr.hpp StdMmgr.hpp Mmged.hpp
am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`;
am__vpath_adj = case $$p in \ am__vpath_adj = case $$p in \
$(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \ $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \
@ -220,8 +220,8 @@ target_alias = @target_alias@
top_build_prefix = @top_build_prefix@ top_build_prefix = @top_build_prefix@
top_builddir = @top_builddir@ top_builddir = @top_builddir@
top_srcdir = @top_srcdir@ top_srcdir = @top_srcdir@
pkginclude_HEADERS = mem.h chr.h str.h lda.h htb.h rbt.h rex.h sll.h \ pkginclude_HEADERS = mem.h xma.h chr.h str.h lda.h htb.h rbt.h rex.h \
dll.h opt.h tio.h fio.h pio.h sio.h time.h misc.h main.h \ sll.h dll.h opt.h tio.h fio.h pio.h sio.h time.h misc.h main.h \
stdio.h $(am__append_1) stdio.h $(am__append_1)
all: all-am all: all-am

57
qse/include/qse/cmn/xma.h Normal file
View File

@ -0,0 +1,57 @@
/*
* $Id$
*
Copyright 2006-2009 Chung, Hyung-Hwan.
This file is part of QSE.
QSE is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation, either version 3 of
the License, or (at your option) any later version.
QSE is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with QSE. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _QSE_CMN_XMA_H_
#define _QSE_CMN_XMA_H_
#include <qse/types.h>
#include <qse/macros.h>
typedef struct qse_xma_t qse_xma_t;
typedef struct qse_xma_blk_t qse_xma_blk_t;
struct qse_xma_t
{
QSE_DEFINE_COMMON_FIELDS (xma)
qse_xma_blk_t* head;
qse_xma_blk_t* xfree[100];
struct
{
qse_size_t total;
qse_size_t alloc;
qse_size_t avail;
qse_size_t nused;
qse_size_t nfree;
} stat;
};
#ifdef __cplusplus
extern "C" {
#endif
QSE_DEFINE_COMMON_FUNCTIONS (xma)
#ifdef __cplusplus
}
#endif
#endif

View File

@ -5,7 +5,7 @@ AM_CPPFLAGS = -I$(top_srcdir)/include
lib_LTLIBRARIES = libqsecmn.la lib_LTLIBRARIES = libqsecmn.la
libqsecmn_la_SOURCES = \ libqsecmn_la_SOURCES = \
syscall.h mem.h \ syscall.h mem.h \
mem.c chr.c chr_cnv.c rex.c \ xma.c mem.c chr.c chr_cnv.c rex.c \
str_bas.c str_cnv.c str_dyn.c str_utl.c \ str_bas.c str_cnv.c str_dyn.c str_utl.c \
lda.c htb.c rbt.c sll.c dll.c opt.c \ lda.c htb.c rbt.c sll.c dll.c opt.c \
tio.c tio_get.c tio_put.c \ tio.c tio_get.c tio_put.c \

View File

@ -73,10 +73,11 @@ am__base_list = \
am__installdirs = "$(DESTDIR)$(libdir)" am__installdirs = "$(DESTDIR)$(libdir)"
LTLIBRARIES = $(lib_LTLIBRARIES) LTLIBRARIES = $(lib_LTLIBRARIES)
libqsecmn_la_DEPENDENCIES = libqsecmn_la_DEPENDENCIES =
am_libqsecmn_la_OBJECTS = mem.lo chr.lo chr_cnv.lo rex.lo str_bas.lo \ am_libqsecmn_la_OBJECTS = xma.lo mem.lo chr.lo chr_cnv.lo rex.lo \
str_cnv.lo str_dyn.lo str_utl.lo lda.lo htb.lo rbt.lo sll.lo \ str_bas.lo str_cnv.lo str_dyn.lo str_utl.lo lda.lo htb.lo \
dll.lo opt.lo tio.lo tio_get.lo tio_put.lo fio.lo pio.lo \ rbt.lo sll.lo dll.lo opt.lo tio.lo tio_get.lo tio_put.lo \
sio.lo time.lo misc.lo assert.lo main.lo stdio.lo fio.lo pio.lo sio.lo time.lo misc.lo assert.lo main.lo \
stdio.lo
libqsecmn_la_OBJECTS = $(am_libqsecmn_la_OBJECTS) libqsecmn_la_OBJECTS = $(am_libqsecmn_la_OBJECTS)
libqsecmn_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \ libqsecmn_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \
$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \ $(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
@ -261,7 +262,7 @@ AM_CPPFLAGS = -I$(top_srcdir)/include
lib_LTLIBRARIES = libqsecmn.la $(am__append_1) lib_LTLIBRARIES = libqsecmn.la $(am__append_1)
libqsecmn_la_SOURCES = \ libqsecmn_la_SOURCES = \
syscall.h mem.h \ syscall.h mem.h \
mem.c chr.c chr_cnv.c rex.c \ xma.c mem.c chr.c chr_cnv.c rex.c \
str_bas.c str_cnv.c str_dyn.c str_utl.c \ str_bas.c str_cnv.c str_dyn.c str_utl.c \
lda.c htb.c rbt.c sll.c dll.c opt.c \ lda.c htb.c rbt.c sll.c dll.c opt.c \
tio.c tio_get.c tio_put.c \ tio.c tio_get.c tio_put.c \
@ -381,6 +382,7 @@ distclean-compile:
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tio.Plo@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tio.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tio_get.Plo@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tio_get.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tio_put.Plo@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tio_put.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/xma.Plo@am__quote@
.c.o: .c.o:
@am__fastdepCC_TRUE@ $(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $< @am__fastdepCC_TRUE@ $(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<

456
qse/lib/cmn/xma.c Normal file
View File

@ -0,0 +1,456 @@
/*
* $Id$
*
Copyright 2006-2009 Chung, Hyung-Hwan.
This file is part of QSE.
QSE is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation, either version 3 of
the License, or (at your option) any later version.
QSE is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with QSE. If not, see <http://www.gnu.org/licenses/>.
*/
#include <qse/cmn/xma.h>
#include "mem.h"
#define ALIGN QSE_SIZEOF(qse_size_t)
#define HDRSIZE QSE_SIZEOF(qse_xma_blk_t)
#define SYS_TO_USR(_) (((qse_xma_blk_t*)_) + 1)
#define USR_TO_SYS(_) (((qse_xma_blk_t*)_) - 1)
#define XFIMAX(mmp) (QSE_COUNTOF(mmp->xfree)-1)
struct qse_xma_blk_t
{
qse_size_t avail: 1;
qse_size_t size: (sizeof(qse_size_t)*8)-1; /**< block size */
qse_xma_blk_t* link; /**< link to the next free block */
qse_xma_blk_t* blink; /**< link to the previous free block */
qse_xma_blk_t* back; /**< previous block */
qse_xma_blk_t* fore; /**< next block */
};
qse_xma_t* qse_xma_open (
qse_mmgr_t* mmgr, qse_size_t ext, qse_size_t size)
{
qse_xma_t* mmp;
qse_xma_blk_t* free;
if (size < HDRSIZE + ALIGN) size = HDRSIZE + ALIGN;
mmp = (qse_xma_t*) QSE_MMGR_ALLOC (mmgr, QSE_SIZEOF(*mmp) + ext + size);
if (mmp == QSE_NULL) return QSE_NULL;
QSE_MEMSET (mmp, 0, QSE_SIZEOF(*mmp));
/* make the entire region available. the allocatable block begins
* past the mmp structure */
free = (qse_xma_blk_t*)(mmp + 1);
free->size = size - HDRSIZE; /* size excluding the block header */
free->link = QSE_NULL;
free->fore = QSE_NULL;
free->back = QSE_NULL;
free->avail = 1;
/* the entire region is a free block */
mmp->xfree[XFIMAX(mmp)] = free;
mmp->head = free;
/* initialize some statistical variables */
mmp->stat.total = size;
mmp->stat.alloc = 0;
mmp->stat.avail = size - HDRSIZE;
mmp->stat.nfree = 1;
mmp->stat.nused = 0;
return mmp;
}
void qse_xma_close (qse_xma_t* mmp)
{
QSE_MMGR_FREE (mmp->mmgr, mmp);
}
static QSE_INLINE void attach_block_to_freelist (qse_xma_t* mmp, qse_xma_blk_t* b)
{
qse_size_t xfi = (b->size / ALIGN) - 1;
if (xfi > XFIMAX(mmp)) xfi = XFIMAX(mmp);
b->blink = QSE_NULL;
b->link = mmp->xfree[xfi];
if (mmp->xfree[xfi]) mmp->xfree[xfi]->blink = b;
mmp->xfree[xfi] = b;
}
static QSE_INLINE void detach_block_from_freelist (qse_xma_t* mmp, qse_xma_blk_t* b)
{
qse_xma_blk_t* x, * y;
x = b->blink;
y = b->link;
if (x) x->link = y;
else
{
qse_size_t xfi = (b->size / ALIGN) - 1;
if (xfi > XFIMAX(mmp)) xfi = XFIMAX(mmp);
mmp->xfree[xfi] = y;
}
if (y) y->blink = x;
}
static qse_xma_blk_t* alloc_from_freelist (
qse_xma_t* mmp, qse_size_t xfi, qse_size_t size)
{
qse_xma_blk_t* free;
for (free = mmp->xfree[xfi]; free; free = free->link)
{
if (free->size >= size)
{
qse_size_t rem;
rem = free->size - size;
if (rem > HDRSIZE)
{
qse_xma_blk_t* tmp;
/* the remaining part is large enough to hold
* another block. let's split it */
tmp = (qse_xma_blk_t*)(((qse_byte_t*)(free + 1)) + size);
tmp->avail = 1;
tmp->size = rem - HDRSIZE;
tmp->fore = free->fore;
tmp->back = free;
if (free->fore) free->fore->back = tmp;
free->fore = tmp;
free->size = size;
tmp->link = free->link;
free->link = tmp;
mmp->stat.avail -= HDRSIZE;
}
else
{
/* decrement the number of free blocks as the current
* block is allocated as a whole without being split */
mmp->stat.nfree--;
}
if (free->link) free->link->blink = free->blink;
if (free->blink) free->blink->link = free->link;
else
{
QSE_ASSERT (mmp->xfree[xfi] == free);
mmp->xfree[xfi] = free->link;
}
free->avail = 0;
/*
free->link = QSE_NULL;
free->blink = QSE_NULL;
*/
mmp->stat.nused++;
mmp->stat.alloc += free->size;
mmp->stat.avail -= free->size;
return free;
}
}
return QSE_NULL;
}
void* qse_xma_alloc (qse_xma_t* mmp, qse_size_t size)
{
qse_xma_blk_t* free;
qse_size_t xfi;
if (size <= 0) size = 1;
/* round up 'size' to the multiples of ALIGN */
/*size = (size + ALIGN - 1) & ~(ALIGN - 1); */
size = ((size + ALIGN - 1) / ALIGN) * ALIGN;
QSE_ASSERT (size >= ALIGN);
xfi = (size / ALIGN) - 1;
if (xfi > XFIMAX(mmp)) xfi = XFIMAX(mmp);
if (xfi < XFIMAX(mmp) && mmp->xfree[xfi])
{
/* try the best fit */
printf ("FOUND A BEST FIT...............\n");
free = mmp->xfree[xfi];
QSE_ASSERT (free->avail != 0);
QSE_ASSERT (free->size == size);
detach_block_from_freelist (mmp, free);
free->avail = 0;
mmp->stat.nfree--;
mmp->stat.nused++;
mmp->stat.alloc += free->size;
mmp->stat.avail -= free->size;
}
else
{
/* traverses the chain of free blocks */
free = alloc_from_freelist (mmp, XFIMAX(mmp), size);
if (free == QSE_NULL)
{
for (++xfi; xfi < XFIMAX(mmp) - 1; xfi++)
{
free = alloc_from_freelist (mmp, xfi, size);
if (free != QSE_NULL) break;
}
if (free == QSE_NULL) return QSE_NULL;
}
}
return SYS_TO_USR(free);
}
void qse_xma_free (qse_xma_t* mmp, void* b)
{
qse_xma_blk_t* blk = USR_TO_SYS(b);
/*QSE_ASSERT (blk->link == QSE_NULL);*/
/* update statistical variables */
mmp->stat.nused--;
mmp->stat.alloc -= blk->size;
if ((blk->back && blk->back->avail) &&
(blk->fore && blk->fore->avail))
{
/*
* Merge the block with surrounding blocks
*
* blk
* +-----+ | +-----+ +------+
* | V v | v | V
* +------------+------------+------------+------------+
* | X | | Y | Z |
* +------------+------------+------------+------------+
* ^ | ^ | ^ |
* +-----+ +------+ +------+
*
*
* +-----------------------------------+
* | V
* +--------------------------------------+------------+
* | X | Z |
* +--------------------------------------+------------+
* ^ |
* +-----------------------------------+
*/
qse_xma_blk_t* x = blk->back;
qse_xma_blk_t* y = blk->fore;
qse_xma_blk_t* z = y->fore;
qse_size_t bs = blk->size + HDRSIZE + y->size + HDRSIZE;
detach_block_from_freelist (mmp, x);
detach_block_from_freelist (mmp, y);
x->size += bs;
x->fore = z;
if (z) z->back = x;
attach_block_to_freelist (mmp, x);
mmp->stat.nfree--;
mmp->stat.avail += bs;
}
else if (blk->fore && blk->fore->avail)
{
/*
* Merge the block with the next block
*
* blk
* | +-----+ +------+
* v | v | V
* +------------+------------+------------+
* | | X | Y |
* +------------+------------+------------+
* ^ | ^ |
* +------+ +------+
*
* blk
* | +------------------+
* v | V
* +-------------------------+------------+
* | | Y |
* +-------------------------+------------+
* ^ |
* +-------------------+
*/
qse_xma_blk_t* x = blk->fore;
qse_xma_blk_t* y = x->fore;
qse_size_t bs = x->size + HDRSIZE;
/* detach x from the free list */
detach_block_from_freelist (mmp, x);
/* update the block availability */
blk->avail = 1;
/* update the block size. HDRSIZE for the header space in x */
blk->size += bs;
/* update the backward link of Y */
if (y) y->back = blk;
/* update the forward link of the block being freed */
blk->fore = y;
/* attach blk to the free list */
attach_block_to_freelist (mmp, blk);
mmp->stat.avail += bs;
}
else if (blk->back && blk->back->avail)
{
/*
* Merge the block with the previous block
*
* blk
* +-----+ | +-----+
* | V v | v
* +------------+------------+------------+
* | X | | Y |
* +------------+------------+------------+
* ^ | ^ |
* +------+ +------+
*
*
* +---------------------+
* | v
* +-------------------------+------------+
* | X | Y |
* +-------------------------+------------+
* ^ |
* +--------------------+
*
*/
qse_xma_blk_t* x = blk->back;
qse_xma_blk_t* y = blk->fore;
qse_size_t bs = blk->size + HDRSIZE;
detach_block_from_freelist (mmp, x);
x->size += blk->size + HDRSIZE;
x->fore = y;
if (y) y->back = x;
attach_block_to_freelist (mmp, x);
mmp->stat.avail += bs;
}
else
{
blk->avail = 1;
attach_block_to_freelist (mmp, blk);
mmp->stat.nfree++;
mmp->stat.avail += blk->size;
}
}
void qse_xma_dump (qse_xma_t* mmp)
{
qse_xma_blk_t* tmp;
unsigned long long fsum, asum, isum;
printf ("<MMP DUMP>\n");
printf ("== statistics ==\n");
printf ("total = %llu\n", (unsigned long long)mmp->stat.total);
printf ("alloc = %llu\n", (unsigned long long)mmp->stat.alloc);
printf ("avail = %llu\n", (unsigned long long)mmp->stat.avail);
printf ("== blocks ==\n");
printf (" size avail address\n");
for (tmp = mmp->head, fsum = 0, asum = 0; tmp; tmp = tmp->fore)
{
printf (" %-18llu %-5d %p\n", (unsigned long long)tmp->size, tmp->avail, tmp);
if (tmp->avail) fsum += tmp->size;
else asum += tmp->size;
}
isum = (mmp->stat.nfree + mmp->stat.nused) * HDRSIZE;
printf ("---------------------------------------\n");
printf ("Allocated blocks: %18llu bytes\n", asum);
printf ("Available blocks: %18llu bytes\n", fsum);
printf ("Internal use : %18llu bytes\n", isum);
printf ("Total : %18llu bytes\n", asum + fsum + isum);
}
#if 0
int main ()
{
int i;
void* ptr[100];
qse_xma_t* mmp = qse_xma_open (100000L);
if (mmp == QSE_NULL)
{
printf ("cannot open mmp\n");
return -1;
}
for (i = 0; i < 100; i++)
{
int sz = (i + 1) * 10;
/*int sz = 10240;*/
ptr[i] = qse_xma_alloc (mmp, sz);
if (ptr[i] == QSE_NULL)
{
printf ("failed to alloc %d\n", sz);
break;
}
printf ("%d %p\n", sz, ptr[i]);
}
for (--i; i > 0; i-= 3)
{
if (i >= 0) qse_xma_free (mmp, ptr[i]);
}
/*
qse_xma_free (mmp, ptr[0]);
qse_xma_free (mmp, ptr[1]);
qse_xma_free (mmp, ptr[2]);
*/
{
void* x, * y;
printf ("%p\n", qse_xma_alloc (mmp, 5000));
printf ("%p\n", qse_xma_alloc (mmp, 1000));
printf ("%p\n", (x = qse_xma_alloc (mmp, 10)));
printf ("%p\n", (y = qse_xma_alloc (mmp, 40)));
if (x) qse_xma_free (mmp, x);
if (y) qse_xma_free (mmp, y);
printf ("%p\n", (x = qse_xma_alloc (mmp, 10)));
printf ("%p\n", (y = qse_xma_alloc (mmp, 40)));
}
qse_xma_dump (mmp);
qse_xma_close (mmp);
return 0;
}
#endif