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Solve malloc alignment issues.

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This commit is contained in:
C. Guy Yarvin 2014-11-11 13:49:45 -08:00
parent d1e64e60da
commit 9b4da218aa
6 changed files with 167 additions and 45 deletions
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2
Makefile
View File

@ -59,7 +59,7 @@ INCLUDE=i
MDEFINES=-DU3_OS_$(OS) -DU3_OS_ENDIAN_$(ENDIAN) -D U3_LIB=\"$(LIB)\"
# NOTFORCHECKIN - restore -O3
CFLAGS= $(COSFLAGS) -g -msse3 -ffast-math \
CFLAGS= $(COSFLAGS) -O3 -msse3 -ffast-math \
-funsigned-char \
-I/usr/local/include \
-I/opt/local/include \

26
i/n/a.h
View File

@ -311,29 +311,31 @@
**/
/** Allocation.
**/
/* Basic allocation.
/* Word-aligned allocation.
*/
/* u3a_walloc(): allocate storage measured in words.
*/
void*
u3a_walloc(c3_w len_w);
/* u3a_malloc(): allocate storage measured in bytes.
*/
void*
u3a_malloc(size_t len_i);
/* u3a_free(): free storage.
/* u3a_drop(): free storage.
*/
void
u3a_free(void* lag_v);
u3a_drop(void* lag_v);
/* u3a_wealloc(): word realloc.
*/
void*
u3a_wealloc(void* lag_v, c3_w len_w);
/* u3a_realloc(): byte realloc.
/* C-style aligned allocation - *not* compatible with above.
*/
/* u3a_malloc(): aligned storage measured in bytes.
*/
void*
u3a_malloc(size_t len_i);
/* u3a_realloc(): aligned realloc in bytes.
*/
void*
u3a_realloc(void* lag_v, size_t len_i);
@ -343,12 +345,16 @@
void*
u3a_realloc2(void* lag_v, size_t old_i, size_t new_i);
/* u3a_free(): free for aligned malloc.
*/
void
u3a_free(void* tox_v);
/* u3a_free2(): gmp-shaped free.
*/
void
u3a_free2(void* tox_v, size_t siz_i);
/* Reference and arena control.
*/
/* u3a_gain(): gain a reference count in normal space.

170
n/a.c
View File

@ -115,29 +115,75 @@ _box_detach(u3a_box* box_u)
}
}
/* _me_road_all_hat(): in u3R, allocate directly on the hat.
/* _me_align_pad(): pad to first point after pos_p aligned at (ald_w, alp_w).
*/
static c3_w*
_me_road_all_hat(c3_w len_w)
static __inline__ c3_w
_me_align_pad(u3_post pos_p, c3_w ald_w, c3_w alp_w)
{
if ( len_w > u3a_open(u3R) ) {
u3m_bail(c3__meme); return 0;
}
c3_w adj_w = (ald_w - (alp_w + 1));
c3_p off_p = (pos_p + adj_w);
c3_p orp_p = off_p &~ (ald_w - 1);
c3_p fin_p = orp_p + alp_w;
c3_w pad_w = (fin_p - pos_p);
if ( c3y == u3a_is_north(u3R) ) {
u3_post all_p;
return pad_w;
}
/* _me_align_dap(): pad to last point before pos_p aligned at (ald_w, alp_w).
*/
static __inline__ c3_w
_me_align_dap(u3_post pos_p, c3_w ald_w, c3_w alp_w)
{
c3_w adj_w = alp_w;
c3_p off_p = (pos_p - adj_w);
c3_p orp_p = (off_p &~ (ald_w - 1));
c3_p fin_p = orp_p + alp_w;
c3_w pad_w = (pos_p - fin_p);
return pad_w;
}
/* _ca_box_make_hat(): in u3R, allocate directly on the hat.
*/
static u3a_box*
_ca_box_make_hat(c3_w len_w, c3_w ald_w, c3_w alp_w, c3_w use_w)
{
c3_w pad_w;
u3_post all_p;
if ( c3y == u3a_is_north(u3R) ) {
all_p = u3R->hat_p;
u3R->hat_p += len_w;
pad_w = _me_align_pad(all_p, ald_w, alp_w);
return u3a_into(all_p);
u3R->hat_p += (len_w + pad_w);
if ( u3R->hat_p >= u3R->cap_p ) {
u3m_bail(c3__meme); return 0;
}
}
else {
u3R->hat_p -= len_w;
return u3a_into(u3R->hat_p);
all_p = (u3R->hat_p - len_w);
pad_w = _me_align_dap(all_p, ald_w, alp_w);
all_p -= pad_w;
u3R->hat_p = all_p;
if ( u3R->hat_p <= u3R->cap_p ) {
u3m_bail(c3__meme); return 0;
}
}
return _box_make(u3a_into(all_p), (len_w + pad_w), use_w);
}
#if 0
/* _me_road_all_hat(): in u3R, allocate directly on the hat.
*/
static u3a_box*
_ca_box_make_hat(c3_w len_w, c3_w alm_w, c3_w use_w)
{
return _box_make(_me_road_all_hat(len_w), len_w, use_w);
}
#endif
#if 0 // not yet used
/* _me_road_all_cap(): in u3R, allocate directly on the cap.
*/
@ -193,11 +239,13 @@ u3a_sane(void)
/* _ca_walloc(): u3a_walloc() internals.
*/
static void*
_ca_walloc(c3_w len_w)
_ca_walloc(c3_w len_w, c3_w ald_w, c3_w alp_w)
{
c3_w siz_w = c3_max(u3a_minimum, u3a_boxed(len_w));
c3_w sel_w = _box_slot(siz_w);
alp_w = (alp_w + c3_wiseof(u3a_box)) % ald_w;
// XX: this logic is totally bizarre, but preserve it.
//
if ( (sel_w != 0) && (sel_w != u3a_fbox_no - 1) ) {
@ -217,11 +265,15 @@ _ca_walloc(c3_w len_w)
else {
/* Nothing in top free list. Chip away at the hat.
*/
return u3a_boxto(_box_make(_me_road_all_hat(siz_w), siz_w, 1));
return u3a_boxto(_ca_box_make_hat(siz_w, ald_w, alp_w, 1));
}
}
else {
if ( siz_w > u3to(u3a_fbox, *pfr_p)->box_u.siz_w ) {
c3_w pad_w = _me_align_pad(*pfr_p, ald_w, alp_w);
if ( 1 == ald_w ) c3_assert(0 == pad_w);
if ( (siz_w + pad_w) > u3to(u3a_fbox, *pfr_p)->box_u.siz_w ) {
/* This free block is too small. Continue searching.
*/
pfr_p = &(u3to(u3a_fbox, *pfr_p)->nex_p);
@ -233,6 +285,7 @@ _ca_walloc(c3_w len_w)
/* We have found a free block of adequate size. Remove it
** from the free list.
*/
siz_w += pad_w;
{
{
c3_assert((0 == u3to(u3a_fbox, *pfr_p)->pre_p) ||
@ -285,7 +338,7 @@ int FOO;
void*
u3a_walloc(c3_w len_w)
{
void* ptr_v = _ca_walloc(len_w);
void* ptr_v = _ca_walloc(len_w, 1, 0);
#if 0
if ( (703 == u3_Code) &&
@ -325,16 +378,16 @@ u3a_wealloc(void* lag_v, c3_w len_w)
for ( i_w = 0; i_w < tiz_w; i_w++ ) {
new_w[i_w] = old_w[i_w];
}
u3a_free(lag_v);
u3a_drop(lag_v);
return new_w;
}
}
}
/* u3a_free(): free storage.
/* u3a_drop(): free storage.
*/
void
u3a_free(void* tox_v)
u3a_drop(void* tox_v)
{
u3a_box* box_u = u3a_botox(tox_v);
c3_w* box_w = (c3_w *)(void *)box_u;
@ -417,6 +470,7 @@ u3a_free(void* tox_v)
}
}
#if 0
/* u3a_malloc(): allocate storage measured in bytes.
*/
void*
@ -437,6 +491,54 @@ u3a_realloc(void* lag_v, size_t len_i)
return u3a_wealloc(lag_v, (len_w + 3) >> 2);
}
#else
/* u3a_malloc(): aligned storage measured in bytes.
*/
void*
u3a_malloc(size_t len_i)
{
c3_w len_w = (c3_w)((len_i + 3) >> 2);
c3_w* ptr_w = _ca_walloc(len_w + 1, 4, 3);
u3_post ptr_p = u3a_outa(ptr_w);
c3_w pad_w = _me_align_pad(ptr_p, 4, 3);
c3_w* out_w = u3a_into(ptr_p + pad_w + 1);
out_w[-1] = pad_w;
return out_w;
}
/* u3a_realloc(): aligned realloc in bytes.
*/
void*
u3a_realloc(void* lag_v, size_t len_i)
{
if ( !lag_v ) {
return u3a_malloc(len_i);
}
else {
c3_w len_w = (c3_w)((len_i + 3) >> 2);
c3_w* lag_w = lag_v;
c3_w pad_w = lag_w[-1];
c3_w* org_w = lag_w - (pad_w + 1);
u3a_box* box_u = u3a_botox((void *)org_w);
c3_w* old_w = lag_v;
c3_w tiz_w = c3_min(box_u->siz_w, len_w);
{
c3_w* new_w = u3a_malloc(len_i);
c3_w i_w;
for ( i_w = 0; i_w < tiz_w; i_w++ ) {
new_w[i_w] = old_w[i_w];
}
u3a_drop(org_w);
return new_w;
}
}
c3_w len_w = (c3_w)len_i;
return u3a_wealloc(lag_v, (len_w + 3) >> 2);
}
/* u3a_realloc2(): gmp-shaped realloc.
*/
void*
@ -445,13 +547,27 @@ u3a_realloc2(void* lag_v, size_t old_i, size_t new_i)
return u3a_realloc(lag_v, new_i);
}
/* u3a_free(): free for aligned malloc.
*/
void
u3a_free(void* tox_v)
{
c3_w* tox_w = tox_v;
c3_w pad_w = tox_w[-1];
c3_w* org_w = tox_w - (pad_w + 1);
// printf("free %p %p\r\n", org_w, tox_w);
u3a_drop(org_w);
}
/* u3a_free2(): gmp-shaped free.
*/
void
u3a_free2(void* tox_v, size_t siz_i)
{
u3a_free(tox_v);
return u3a_free(tox_v);
}
#endif
#if 1
/* _me_wash_north(): clean up mug slots after copy.
@ -946,14 +1062,14 @@ top:
if ( !_(u3a_is_cat(h_dog)) ) {
_me_lose_north(h_dog);
}
u3a_free(dog_w);
u3a_drop(dog_w);
if ( !_(u3a_is_cat(t_dog)) ) {
dog = t_dog;
goto top;
}
}
else {
u3a_free(dog_w);
u3a_drop(dog_w);
}
}
}
@ -986,14 +1102,14 @@ top:
if ( !_(u3a_is_cat(h_dog)) ) {
_me_lose_south(h_dog);
}
u3a_free(dog_w);
u3a_drop(dog_w);
if ( !_(u3a_is_cat(t_dog)) ) {
dog = t_dog;
goto top;
}
}
else {
u3a_free(dog_w);
u3a_drop(dog_w);
}
}
}
@ -1340,7 +1456,7 @@ u3a_moot(c3_w* sal_w)
if ( 1 == len_w ) {
if ( _(u3a_is_cat(las_w)) ) {
u3a_free(nov_w);
u3a_drop(nov_w);
return las_w;
}
@ -1405,7 +1521,7 @@ u3a_mint(c3_w* sal_w, c3_w len_w)
/* See if we can free the slab entirely.
*/
if ( len_w == 0 ) {
u3a_free(nov_w);
u3a_drop(nov_w);
return 0;
}
@ -1413,7 +1529,7 @@ u3a_mint(c3_w* sal_w, c3_w len_w)
c3_w low_w = nov_u->buf_w[0];
if ( _(u3a_is_cat(low_w)) ) {
u3a_free(nov_w);
u3a_drop(nov_w);
return low_w;
}

2
n/e.c
View File

@ -883,7 +883,7 @@ u3e_init(c3_o chk_o)
/* Make sure GMP uses our malloc.
*/
// mp_set_memory_functions(u3a_malloc, u3a_realloc2, u3a_free2);
mp_set_memory_functions(u3a_malloc, u3a_realloc2, u3a_free2);
/* Map at fixed address.
*/

10
n/h.c
View File

@ -72,7 +72,7 @@ _ch_buck_add(u3h_buck* hab_u, u3_noun kev)
bah_u->kev[i_w + 1] = hab_u->kev[i_w];
}
u3a_free(hab_u);
u3a_drop(hab_u);
return bah_u;
}
}
@ -150,7 +150,7 @@ _ch_node_add(u3h_node* han_u, c3_w lef_w, c3_w rem_w, u3_noun kev)
for ( i_w = inx_w; i_w < len_w; i_w++ ) {
nah_u->sot_w[i_w + 1] = han_u->sot_w[i_w];
}
u3a_free(han_u);
u3a_drop(han_u);
return nah_u;
}
}
@ -489,7 +489,7 @@ _ch_free_buck(u3h_buck* hab_u)
for ( i_w = 0; i_w < hab_u->len_w; i_w++ ) {
u3a_lose(hab_u->kev[i_w]);
}
u3a_free(hab_u);
u3a_drop(hab_u);
}
/* _ch_free_node(): free node.
@ -520,7 +520,7 @@ _ch_free_node(u3h_node* han_u, c3_w lef_w)
}
}
}
u3a_free(han_u);
u3a_drop(han_u);
}
/* u3h_free(): free hashtable.
@ -545,7 +545,7 @@ u3h_free(u3p(u3h_root) har_p)
_ch_free_node(han_u, 25);
}
}
u3a_free(har_u);
u3a_drop(har_u);
}
/* _ch_walk_buck(): walk bucket for gc.

2
n/v.c
View File

@ -64,7 +64,7 @@ u3v_hose(void)
u3p(u3v_cart) nex_p = egg_u->nex_p;
u3a_lose(egg_u->vir);
u3a_free(egg_u);
u3a_drop(egg_u);
egg_p = nex_p;
}