static void
pos_malloc_consolidate(char *name, mstate av)
{
mfastbinptr* fb;
mfastbinptr* maxfb;
mchunkptr p;
mchunkptr nextp;
#if CONSISTENCY == 1
clear_fastchunks_log(name, av);
#else
clear_fastchunks(av);
#endif
maxfb = &fastbin (av, NFASTBINS - 1);
fb = &fastbin (av, 0);
do {
p = *fb;
if (p != 0) {
#if CONSISTENCY == 1
POS_WRITE_VAUE(name, (unsigned long *)fb, (unsigned long)0);
#else
*fb = 0;
#endif
do {
nextp = p->fd;
#if CONSISTENCY == 1
clear_inuse_log(name, p);
#else
clear_inuse(p);
#endif
pos_int_free(name, av, p, 0);
} while ( (p = nextp) != 0);
}
} while (fb++ != maxfb);
}
//static void
void
pos_malloc_init_state(char *name, mstate av)
{
mchunkptr first_chunk;
unsigned long first_size;
mchunkptr last_chunk;
unsigned long last_size;
mchunkptr bck;
mchunkptr fwd;
int i;
mbinptr bin;
// init mutex key
pthread_mutex_init( &av->mutex,NULL ) ;
// initialize malloc_state
#if CONSISTENCY == 1
set_init_key_log(name, av);
#else
set_init_key(av);
#endif
// Below codes don't need logging.
for (i=1; i < NBINS; i++) {
bin = bin_at(av,i);
bin->fd = bin->bk = bin;
}
//set_max_fast(DEFAULT_MXFAST);
clear_fastchunks(av);
for (i=0; i< NFASTBINS ; i++) {
av->fastbinsY[i] = 0;
}
// first chunk
first_chunk = chunk_at_offset(av, sizeof(struct malloc_state));
first_size = (PAGESIZE - sizeof(struct malloc_state) - 2*SIZE_SZ)/2; // 956
//#if CONSISTENCY == 1
//first_size = (128*1024-1)*4096 + 960; //536867776
//first_size = request2size(first_size); // 536867792
//#else
first_size = 960;
//#endif
//insert_to_unsorted(av, first_chunk, bck, fwd, first_size);
set_head(first_chunk, first_size | FIRST_CHUNK | PREV_INUSE);
set_foot(first_chunk, first_size);
clear_inuse_bit_at_offset(first_chunk, first_size);
// last_chunk
last_chunk = chunk_at_offset(first_chunk, first_size);
//last_size = first_size;
//#if CONSISTENCY == 1
////last_size = (128*1024)*4096 + 944; // 536867760
//last_size = (256*1024)*4096 - first_size - 2*SIZE_SZ;
//last_size = request2size(last_size); // 536874032
//#else
// last_size = 988;
last_size = 1800;
//#endif
insert_to_unsorted(av, last_chunk, bck, fwd, last_size);
set_head(last_chunk, last_size | LAST_CHUNK | PREV_INUSE);
set_foot(last_chunk, last_size);
clear_inuse_bit_at_offset(last_chunk, last_size);
av->last_remainder = 0;
for (i=0; i<BINMAPSIZE; i++) {
av->binmap[i] = 0;
}
av->system_mem = PAGESIZE;
av -> prime_obj = NULL;
}
/* ------------------------- __malloc_consolidate -------------------------
__malloc_consolidate is a specialized version of free() that tears
down chunks held in fastbins. Free itself cannot be used for this
purpose since, among other things, it might place chunks back onto
fastbins. So, instead, we need to use a minor variant of the same
code.
Also, because this routine needs to be called the first time through
malloc anyway, it turns out to be the perfect place to trigger
initialization code.
*/
void attribute_hidden __malloc_consolidate(mstate av)
{
mfastbinptr* fb; /* current fastbin being consolidated */
mfastbinptr* maxfb; /* last fastbin (for loop control) */
mchunkptr p; /* current chunk being consolidated */
mchunkptr nextp; /* next chunk to consolidate */
mchunkptr unsorted_bin; /* bin header */
mchunkptr first_unsorted; /* chunk to link to */
/* These have same use as in free() */
mchunkptr nextchunk;
size_t size;
size_t nextsize;
size_t prevsize;
int nextinuse;
mchunkptr bck;
mchunkptr fwd;
/*
If max_fast is 0, we know that av hasn't
yet been initialized, in which case do so below
*/
if (av->max_fast != 0) {
clear_fastchunks(av);
unsorted_bin = unsorted_chunks(av);
/*
Remove each chunk from fast bin and consolidate it, placing it
then in unsorted bin. Among other reasons for doing this,
placing in unsorted bin avoids needing to calculate actual bins
until malloc is sure that chunks aren't immediately going to be
reused anyway.
*/
maxfb = &(av->fastbins[fastbin_index(av->max_fast)]);
fb = &(av->fastbins[0]);
do {
if ( (p = *fb) != 0) {
*fb = 0;
do {
check_inuse_chunk(p);
nextp = p->fd;
/* Slightly streamlined version of consolidation code in free() */
size = p->size & ~PREV_INUSE;
nextchunk = chunk_at_offset(p, size);
nextsize = chunksize(nextchunk);
if (!prev_inuse(p)) {
prevsize = p->prev_size;
size += prevsize;
p = chunk_at_offset(p, -((long) prevsize));
unlink(p, bck, fwd);
}
if (nextchunk != av->top) {
nextinuse = inuse_bit_at_offset(nextchunk, nextsize);
set_head(nextchunk, nextsize);
if (!nextinuse) {
size += nextsize;
unlink(nextchunk, bck, fwd);
}
first_unsorted = unsorted_bin->fd;
unsorted_bin->fd = p;
first_unsorted->bk = p;
set_head(p, size | PREV_INUSE);
p->bk = unsorted_bin;
p->fd = first_unsorted;
set_foot(p, size);
}
else {
size += nextsize;
set_head(p, size | PREV_INUSE);
av->top = p;
}
} while ( (p = nextp) != 0);
}
} while (fb++ != maxfb);
}
else {
malloc_init_state(av);
check_malloc_state();
}
}
int
__malloc_set_state(void* msptr)
{
struct malloc_save_state* ms = (struct malloc_save_state*)msptr;
size_t i;
mbinptr b;
disallow_malloc_check = 1;
ptmalloc_init();
if(ms->magic != MALLOC_STATE_MAGIC) return -1;
/* Must fail if the major version is too high. */
if((ms->version & ~0xffl) > (MALLOC_STATE_VERSION & ~0xffl)) return -2;
(void)mutex_lock(&main_arena.mutex);
/* There are no fastchunks. */
clear_fastchunks(&main_arena);
if (ms->version >= 4)
set_max_fast(ms->max_fast);
else
set_max_fast(64); /* 64 used to be the value we always used. */
for (i=0; i<NFASTBINS; ++i)
fastbin (&main_arena, i) = 0;
for (i=0; i<BINMAPSIZE; ++i)
main_arena.binmap[i] = 0;
top(&main_arena) = ms->av[2];
main_arena.last_remainder = 0;
for(i=1; i<NBINS; i++) {
b = bin_at(&main_arena, i);
if(ms->av[2*i+2] == 0) {
assert(ms->av[2*i+3] == 0);
first(b) = last(b) = b;
} else {
if(ms->version >= 3 &&
(i<NSMALLBINS || (largebin_index(chunksize(ms->av[2*i+2]))==i &&
largebin_index(chunksize(ms->av[2*i+3]))==i))) {
first(b) = ms->av[2*i+2];
last(b) = ms->av[2*i+3];
/* Make sure the links to the bins within the heap are correct. */
first(b)->bk = b;
last(b)->fd = b;
/* Set bit in binblocks. */
mark_bin(&main_arena, i);
} else {
/* Oops, index computation from chunksize must have changed.
Link the whole list into unsorted_chunks. */
first(b) = last(b) = b;
b = unsorted_chunks(&main_arena);
ms->av[2*i+2]->bk = b;
ms->av[2*i+3]->fd = b->fd;
b->fd->bk = ms->av[2*i+3];
b->fd = ms->av[2*i+2];
}
}
}
if (ms->version < 3) {
/* Clear fd_nextsize and bk_nextsize fields. */
b = unsorted_chunks(&main_arena)->fd;
while (b != unsorted_chunks(&main_arena)) {
if (!in_smallbin_range(chunksize(b))) {
b->fd_nextsize = NULL;
b->bk_nextsize = NULL;
}
b = b->fd;
}
}
mp_.sbrk_base = ms->sbrk_base;
main_arena.system_mem = ms->sbrked_mem_bytes;
mp_.trim_threshold = ms->trim_threshold;
mp_.top_pad = ms->top_pad;
mp_.n_mmaps_max = ms->n_mmaps_max;
mp_.mmap_threshold = ms->mmap_threshold;
check_action = ms->check_action;
main_arena.max_system_mem = ms->max_sbrked_mem;
mp_.n_mmaps = ms->n_mmaps;
mp_.max_n_mmaps = ms->max_n_mmaps;
mp_.mmapped_mem = ms->mmapped_mem;
mp_.max_mmapped_mem = ms->max_mmapped_mem;
/* add version-dependent code here */
if (ms->version >= 1) {
/* Check whether it is safe to enable malloc checking, or whether
it is necessary to disable it. */
if (ms->using_malloc_checking && !using_malloc_checking &&
!disallow_malloc_check)
__malloc_check_init ();
else if (!ms->using_malloc_checking && using_malloc_checking) {
__malloc_hook = NULL;
__free_hook = NULL;
__realloc_hook = NULL;
__memalign_hook = NULL;
using_malloc_checking = 0;
}
}
if (ms->version >= 4) {
#ifdef PER_THREAD
mp_.arena_test = ms->arena_test;
mp_.arena_max = ms->arena_max;
narenas = ms->narenas;
#endif
}
check_malloc_state(&main_arena);
(void)mutex_unlock(&main_arena.mutex);
return 0;
}
/* ------------------------- __malloc_consolidate -------------------------
__malloc_consolidate is a specialized version of free() that tears
down chunks held in fastbins. Free itself cannot be used for this
purpose since, among other things, it might place chunks back onto
fastbins. So, instead, we need to use a minor variant of the same
code.
Also, because this routine needs to be called the first time through
malloc anyway, it turns out to be the perfect place to trigger
initialization code.
*/
void attribute_hidden __malloc_consolidate(mstate av)
{
mfastbinptr* fb; /* current fastbin being consolidated */
mfastbinptr* maxfb; /* last fastbin (for loop control) */
mchunkptr p; /* current chunk being consolidated */
mchunkptr nextp; /* next chunk to consolidate */
mchunkptr unsorted_bin; /* bin header */
mchunkptr first_unsorted; /* chunk to link to */
ustate unit; /* */
/* These have same use as in free() */
mchunkptr nextchunk;
size_t size;
size_t nextsize;
size_t prevsize;
int nextinuse;
mchunkptr bck;
mchunkptr fwd;
/*
If max_fast is 0, we know that av hasn't
yet been initialized, in which case do so below
*/
if (av->max_fast != 0) {
clear_fastchunks(av);
unsorted_bin = unsorted_chunks(av);
/*
Remove each chunk from fast bin and consolidate it, placing it
then in unsorted bin. Among other reasons for doing this,
placing in unsorted bin avoids needing to calculate actual bins
until malloc is sure that chunks aren't immediately going to be
reused anyway.
*/
maxfb = &(av->fastbins[fastbin_index(av->max_fast)]);
fb = &(av->fastbins[0]);
do {
if ( (p = *fb) != 0) {
*fb = 0;
do {
check_inuse_chunk(p);
nextp = p->fd;
/* Slightly streamlined version of consolidation code in free() */
size = p->size & ~PREV_INUSE;
nextchunk = chunk_at_offset(p, size);
nextsize = chunksize(nextchunk);
if (!prev_inuse(p)) {
prevsize = p->prev_size;
size += prevsize;
p = chunk_at_offset(p, -((long) prevsize));
unlink(p, bck, fwd);
}
unit = lookup_ustate_by_mem((void*)p);
if (nextchunk != unit->unit_top) {
nextinuse = inuse_bit_at_offset(nextchunk, nextsize);
set_head(nextchunk, nextsize);
if (!nextinuse) {
size += nextsize;
unlink(nextchunk, bck, fwd);
}
first_unsorted = unsorted_bin->fd;
unsorted_bin->fd = p;
first_unsorted->bk = p;
set_head(p, size | PREV_INUSE);
p->bk = unsorted_bin;
p->fd = first_unsorted;
set_foot(p, size);
}
else {
size += nextsize;
set_head(p, size | PREV_INUSE);
unit->unit_top = p;
}
} while ( (p = nextp) != 0);
}
} while (fb++ != maxfb);
}
else {
if (get_abstate()->mstate_list.num == 0) {
//initialize abheap state
init_linked_list(&(get_abstate()->mstate_list));
init_linked_list(&(get_abstate()->ustate_list));
init_linked_list(&(get_abstate()->mmapped_ustate_list));
get_abstate()->ab_top = (mchunkptr)(CHANNEL_ADDR);
//allocate channel heap space
mmap((void *) CHANNEL_ADDR, CHANNEL_SIZE, PROT_READ|PROT_WRITE,
MAP_ANONYMOUS|MAP_FIXED|MAP_SHARED, -1, 0);
touch_mem((void *)CHANNEL_ADDR, CHANNEL_SIZE);
}
malloc_init_state(av);
check_malloc_state();
}
}
