aboutsummaryrefslogtreecommitdiffstats
path: root/erts/emulator/beam
diff options
context:
space:
mode:
authorSverker Eriksson <[email protected]>2018-02-12 13:33:29 +0100
committerSverker Eriksson <[email protected]>2018-02-12 13:33:29 +0100
commit7d390f2dd10f7a746a45a8c5b82af55f86e41f52 (patch)
tree85abb79ad1b6754f504e60debfdecd057b9afd20 /erts/emulator/beam
parentcd9b6371a13c37f8f82586fcd82f212d306d8fad (diff)
parent06e88d07a4719a0e15b4e666b16347fad463cee6 (diff)
downloadotp-7d390f2dd10f7a746a45a8c5b82af55f86e41f52.tar.gz
otp-7d390f2dd10f7a746a45a8c5b82af55f86e41f52.tar.bz2
otp-7d390f2dd10f7a746a45a8c5b82af55f86e41f52.zip
Merge 'sverker/maint-20/alloc-n-migration/ERIERL-88'
into 'sverker/master/alloc-n-migration/ERIERL-88'
Diffstat (limited to 'erts/emulator/beam')
-rw-r--r--erts/emulator/beam/atom.names3
-rw-r--r--erts/emulator/beam/bif.c2
-rw-r--r--erts/emulator/beam/erl_alloc.c173
-rw-r--r--erts/emulator/beam/erl_alloc.h2
-rw-r--r--erts/emulator/beam/erl_alloc_util.c868
-rw-r--r--erts/emulator/beam/erl_alloc_util.h153
-rw-r--r--erts/emulator/beam/erl_ao_firstfit_alloc.c291
-rw-r--r--erts/emulator/beam/erl_ao_firstfit_alloc.h16
-rw-r--r--erts/emulator/beam/erl_goodfit_alloc.c12
9 files changed, 966 insertions, 554 deletions
diff --git a/erts/emulator/beam/atom.names b/erts/emulator/beam/atom.names
index cb4fab51f1..b6ec3e7ed2 100644
--- a/erts/emulator/beam/atom.names
+++ b/erts/emulator/beam/atom.names
@@ -577,7 +577,8 @@ atom running_procs
atom runtime
atom safe
atom save_calls
-atom scheduler
+atom sbct
+atom scheduler
atom scheduler_id
atom scheduler_wall_time
atom scheduler_wall_time_all
diff --git a/erts/emulator/beam/bif.c b/erts/emulator/beam/bif.c
index f086c434ea..d68ccc3028 100644
--- a/erts/emulator/beam/bif.c
+++ b/erts/emulator/beam/bif.c
@@ -4805,6 +4805,8 @@ BIF_RETTYPE system_flag_2(BIF_ALIST_2)
"scheduled for removal in Erlang/OTP 18. For more\n"
"information see the erlang:system_flag/2 documentation.\n");
return erts_bind_schedulers(BIF_P, BIF_ARG_2);
+ } else if (ERTS_IS_ATOM_STR("erts_alloc", BIF_ARG_1)) {
+ return erts_alloc_set_dyn_param(BIF_P, BIF_ARG_2);
}
error:
BIF_ERROR(BIF_P, BADARG);
diff --git a/erts/emulator/beam/erl_alloc.c b/erts/emulator/beam/erl_alloc.c
index 88285d8be6..239dda6bcf 100644
--- a/erts/emulator/beam/erl_alloc.c
+++ b/erts/emulator/beam/erl_alloc.c
@@ -160,7 +160,7 @@ enum allctr_type {
GOODFIT,
BESTFIT,
AFIT,
- AOFIRSTFIT
+ FIRSTFIT
};
struct au_init {
@@ -500,8 +500,9 @@ set_default_test_alloc_opts(struct au_init *ip)
SET_DEFAULT_ALLOC_OPTS(ip);
ip->enable = 0; /* Disabled by default */
ip->thr_spec = -1 * erts_no_schedulers;
- ip->atype = AOFIRSTFIT;
- ip->init.aoff.flavor = AOFF_BF;
+ ip->atype = FIRSTFIT;
+ ip->init.aoff.crr_order = FF_AOFF;
+ ip->init.aoff.blk_order = FF_BF;
ip->init.util.name_prefix = "test_";
ip->init.util.alloc_no = ERTS_ALC_A_TEST;
ip->init.util.mmbcs = 0; /* Main carrier size */
@@ -599,10 +600,10 @@ static ERTS_INLINE int
strategy_support_carrier_migration(struct au_init *auip)
{
/*
- * Currently only aoff, aoffcbf and aoffcaobf support carrier
+ * Currently only aoff* and ageff* support carrier
* migration, i.e, type AOFIRSTFIT.
*/
- return auip->atype == AOFIRSTFIT;
+ return auip->atype == FIRSTFIT;
}
static ERTS_INLINE void
@@ -617,8 +618,9 @@ adjust_carrier_migration_support(struct au_init *auip)
*/
if (!strategy_support_carrier_migration(auip)) {
/* Default to aoffcbf */
- auip->atype = AOFIRSTFIT;
- auip->init.aoff.flavor = AOFF_BF;
+ auip->atype = FIRSTFIT;
+ auip->init.aoff.crr_order = FF_AOFF;
+ auip->init.aoff.blk_order = FF_BF;
}
}
}
@@ -1132,7 +1134,7 @@ start_au_allocator(ErtsAlcType_t alctr_n,
&init->init.af,
&init->init.util);
break;
- case AOFIRSTFIT:
+ case FIRSTFIT:
as = erts_aoffalc_start((AOFFAllctr_t *) as0,
&init->init.aoff,
&init->init.util);
@@ -1226,22 +1228,32 @@ get_bool_value(char *param_end, char** argv, int* ip)
return -1;
}
+static Uint kb_to_bytes(Sint kb, Uint *bytes)
+{
+ const Uint max = ((~((Uint) 0))/1024) + 1;
+
+ if (kb < 0 || (Uint)kb > max)
+ return 0;
+ if ((Uint)kb == max)
+ *bytes = ~((Uint) 0);
+ else
+ *bytes = ((Uint) kb)*1024;
+ return 1;
+}
+
static Uint
get_kb_value(char *param_end, char** argv, int* ip)
{
Sint tmp;
- Uint max = ((~((Uint) 0))/1024) + 1;
+ Uint bytes = 0;
char *rest;
char *param = argv[*ip]+1;
char *value = get_value(param_end, argv, ip);
errno = 0;
tmp = (Sint) ErtsStrToSint(value, &rest, 10);
- if (errno != 0 || rest == value || tmp < 0 || max < ((Uint) tmp))
+ if (errno != 0 || rest == value || !kb_to_bytes(tmp, &bytes))
bad_value(param, param_end, value);
- if (max == (Uint) tmp)
- return ~((Uint) 0);
- else
- return ((Uint) tmp)*1024;
+ return bytes;
}
static UWord
@@ -1328,18 +1340,30 @@ handle_au_arg(struct au_init *auip,
switch (sub_param[0]) {
case 'a':
- if (has_prefix("acul", sub_param)) {
- if (!auip->carrier_migration_allowed) {
- if (!u_switch)
- goto bad_switch;
- else {
- /* ignore */
- (void) get_acul_value(auip, sub_param + 4, argv, ip);
- break;
- }
- }
- auip->init.util.acul = get_acul_value(auip, sub_param + 4, argv, ip);
- }
+ if (sub_param[1] == 'c') { /* Migration parameters "ac*" */
+ UWord value;
+ UWord* wp;
+ if (!auip->carrier_migration_allowed && !u_switch)
+ goto bad_switch;
+
+ if (has_prefix("acul", sub_param)) {
+ value = get_acul_value(auip, sub_param + 4, argv, ip);
+ wp = &auip->init.util.acul;
+ }
+ else if (has_prefix("acnl", sub_param)) {
+ value = get_amount_value(sub_param + 4, argv, ip);
+ wp = &auip->init.util.acnl;
+ }
+ else if (has_prefix("acfml", sub_param)) {
+ value = get_amount_value(sub_param + 5, argv, ip);
+ wp = &auip->init.util.acfml;
+ }
+ else
+ goto bad_switch;
+
+ if (auip->carrier_migration_allowed)
+ *wp = value;
+ }
else if(has_prefix("asbcst", sub_param)) {
auip->init.util.asbcst = get_kb_value(sub_param + 6, argv, ip);
}
@@ -1360,17 +1384,35 @@ handle_au_arg(struct au_init *auip,
auip->atype = AFIT;
}
else if (strcmp("aoff", alg) == 0) {
- auip->atype = AOFIRSTFIT;
- auip->init.aoff.flavor = AOFF_AOFF;
+ auip->atype = FIRSTFIT;
+ auip->init.aoff.crr_order = FF_AOFF;
+ auip->init.aoff.blk_order = FF_AOFF;
}
else if (strcmp("aoffcbf", alg) == 0) {
- auip->atype = AOFIRSTFIT;
- auip->init.aoff.flavor = AOFF_BF;
+ auip->atype = FIRSTFIT;
+ auip->init.aoff.crr_order = FF_AOFF;
+ auip->init.aoff.blk_order = FF_BF;
}
else if (strcmp("aoffcaobf", alg) == 0) {
- auip->atype = AOFIRSTFIT;
- auip->init.aoff.flavor = AOFF_AOBF;
+ auip->atype = FIRSTFIT;
+ auip->init.aoff.crr_order = FF_AOFF;
+ auip->init.aoff.blk_order = FF_AOBF;
}
+ else if (strcmp("ageffcaoff", alg) == 0) {
+ auip->atype = FIRSTFIT;
+ auip->init.aoff.crr_order = FF_AGEFF;
+ auip->init.aoff.blk_order = FF_AOFF;
+ }
+ else if (strcmp("ageffcbf", alg) == 0) {
+ auip->atype = FIRSTFIT;
+ auip->init.aoff.crr_order = FF_AGEFF;
+ auip->init.aoff.blk_order = FF_BF;
+ }
+ else if (strcmp("ageffcaobf", alg) == 0) {
+ auip->atype = FIRSTFIT;
+ auip->init.aoff.crr_order = FF_AGEFF;
+ auip->init.aoff.blk_order = FF_AOBF;
+ }
else {
bad_value(param, sub_param + 1, alg);
}
@@ -3392,6 +3434,65 @@ erts_request_alloc_info(struct process *c_p,
return 1;
}
+Eterm erts_alloc_set_dyn_param(Process* c_p, Eterm tuple)
+{
+ ErtsAllocatorThrSpec_t *tspec;
+ ErtsAlcType_t ai;
+ Allctr_t* allctr;
+ Eterm* tp;
+ Eterm res;
+
+ if (!is_tuple_arity(tuple, 3))
+ goto badarg;
+
+ tp = tuple_val(tuple);
+
+ /*
+ * Ex: {ets_alloc, sbct, 256000}
+ */
+ if (!is_atom(tp[1]) || !is_atom(tp[2]) || !is_integer(tp[3]))
+ goto badarg;
+
+ for (ai = ERTS_ALC_A_MIN; ai <= ERTS_ALC_A_MAX; ai++)
+ if (erts_is_atom_str(erts_alc_a2ad[ai], tp[1], 0))
+ break;
+
+ if (ai > ERTS_ALC_A_MAX)
+ goto badarg;
+
+ if (!erts_allctrs_info[ai].enabled ||
+ !erts_allctrs_info[ai].alloc_util) {
+ return am_notsup;
+ }
+
+ if (tp[2] == am_sbct) {
+ Uint sbct;
+ int i, ok;
+
+ if (!term_to_Uint(tp[3], &sbct))
+ goto badarg;
+
+ tspec = &erts_allctr_thr_spec[ai];
+ if (tspec->enabled) {
+ ok = 0;
+ for (i = 0; i < tspec->size; i++) {
+ allctr = tspec->allctr[i];
+ ok |= allctr->try_set_dyn_param(allctr, am_sbct, sbct);
+ }
+ }
+ else {
+ allctr = erts_allctrs_info[ai].extra;
+ ok = allctr->try_set_dyn_param(allctr, am_sbct, sbct);
+ }
+ return ok ? am_ok : am_notsup;
+ }
+ return am_notsup;
+
+badarg:
+ ERTS_BIF_PREP_ERROR(res, c_p, EXC_BADARG);
+ return res;
+}
+
/*
* The allocator wrapper prelocking stuff below is about the locking order.
* It only affects wrappers (erl_mtrace.c and erl_instrument.c) that keep locks
@@ -3528,7 +3629,7 @@ UWord erts_alc_test(UWord op, UWord a1, UWord a2, UWord a3)
&init.init.af,
&init.init.util);
break;
- case AOFIRSTFIT:
+ case FIRSTFIT:
allctr = erts_aoffalc_start((AOFFAllctr_t *)
erts_alloc(ERTS_ALC_T_UNDEF,
sizeof(AOFFAllctr_t)),
@@ -3622,7 +3723,9 @@ UWord erts_alc_test(UWord op, UWord a1, UWord a2, UWord a3)
case 0xf15: erts_free(ERTS_ALC_T_TEST, (void*)a1); return 0;
- case 0xf16: {
+ case 0xf16: return (UWord) erts_realloc(ERTS_ALC_T_TEST, (void*)a1, (Uint)a2);
+
+ case 0xf17: {
Uint extra_hdr_sz = UNIT_CEILING((Uint)a1);
ErtsAllocatorThrSpec_t* ts = &erts_allctr_thr_spec[ERTS_ALC_A_TEST];
Uint offset = ts->allctr[0]->mbc_header_size;
@@ -3649,7 +3752,7 @@ UWord erts_alc_test(UWord op, UWord a1, UWord a2, UWord a3)
*(void**)a3 = orig_destroying_mbc;
return offset;
}
- case 0xf17: {
+ case 0xf18: {
ErtsAllocatorThrSpec_t* ts = &erts_allctr_thr_spec[ERTS_ALC_A_TEST];
return ts->allctr[0]->largest_mbc_size;
}
diff --git a/erts/emulator/beam/erl_alloc.h b/erts/emulator/beam/erl_alloc.h
index 0438b7cd8c..174bf7a80a 100644
--- a/erts/emulator/beam/erl_alloc.h
+++ b/erts/emulator/beam/erl_alloc.h
@@ -171,6 +171,8 @@ __decl_noreturn void erts_realloc_n_enomem(ErtsAlcType_t,void*,Uint)
__decl_noreturn void erts_alc_fatal_error(int,int,ErtsAlcType_t,...)
__noreturn;
+Eterm erts_alloc_set_dyn_param(struct process*, Eterm);
+
#undef ERTS_HAVE_IS_IN_LITERAL_RANGE
#if defined(ARCH_32) || defined(ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION)
# define ERTS_HAVE_IS_IN_LITERAL_RANGE
diff --git a/erts/emulator/beam/erl_alloc_util.c b/erts/emulator/beam/erl_alloc_util.c
index 4d4bddb93f..fa97ead908 100644
--- a/erts/emulator/beam/erl_alloc_util.c
+++ b/erts/emulator/beam/erl_alloc_util.c
@@ -362,8 +362,10 @@ do { \
#define ERTS_CRR_ALCTR_FLG_IN_POOL (((erts_aint_t) 1) << 0)
#define ERTS_CRR_ALCTR_FLG_BUSY (((erts_aint_t) 1) << 1)
+#define ERTS_CRR_ALCTR_FLG_HOMECOMING (((erts_aint_t) 1) << 2)
#define ERTS_CRR_ALCTR_FLG_MASK (ERTS_CRR_ALCTR_FLG_IN_POOL | \
- ERTS_CRR_ALCTR_FLG_BUSY)
+ ERTS_CRR_ALCTR_FLG_BUSY | \
+ ERTS_CRR_ALCTR_FLG_HOMECOMING)
#define SBC_HEADER_SIZE \
(UNIT_CEILING(offsetof(Carrier_t, cpool) \
@@ -563,7 +565,7 @@ do { \
DEBUG_CHECK_CARRIER_NO_SZ((AP)); \
} while (0)
-#define STAT_MBC_CPOOL_INSERT(AP, CRR) \
+#define STAT_MBC_ABANDON(AP, CRR) \
do { \
UWord csz__ = CARRIER_SZ((CRR)); \
if (IS_MSEG_CARRIER((CRR))) \
@@ -1153,89 +1155,23 @@ unlink_carrier(CarrierList_t *cl, Carrier_t *crr)
ASSERT(crr->next);
crr->next->prev = crr->prev;
}
-}
-
-
#ifdef DEBUG
-static int is_in_list(ErtsDoubleLink_t* sentinel, ErtsDoubleLink_t* node)
-{
- ErtsDoubleLink_t* p;
-
- ASSERT(node != sentinel);
- for (p = sentinel->next; p != sentinel; p = p->next) {
- if (p == node)
- return 1;
- }
- return 0;
-}
-#endif /* DEBUG */
-
-static ERTS_INLINE void
-link_edl_after(ErtsDoubleLink_t* after_me, ErtsDoubleLink_t* node)
-{
- ErtsDoubleLink_t* before_me = after_me->next;
- ASSERT(node != after_me && node != before_me);
- node->next = before_me;
- node->prev = after_me;
- before_me->prev = node;
- after_me->next = node;
-}
-
-static ERTS_INLINE void
-link_edl_before(ErtsDoubleLink_t* before_me, ErtsDoubleLink_t* node)
-{
- ErtsDoubleLink_t* after_me = before_me->prev;
- ASSERT(node != before_me && node != after_me);
- node->next = before_me;
- node->prev = after_me;
- before_me->prev = node;
- after_me->next = node;
-}
-
-static ERTS_INLINE void
-unlink_edl(ErtsDoubleLink_t* node)
-{
- node->next->prev = node->prev;
- node->prev->next = node->next;
-}
-
-static ERTS_INLINE void
-relink_edl_before(ErtsDoubleLink_t* before_me, ErtsDoubleLink_t* node)
-{
- if (node != before_me && node != before_me->prev) {
- unlink_edl(node);
- link_edl_before(before_me, node);
- }
+ crr->next = crr;
+ crr->prev = crr;
+#endif
}
static ERTS_INLINE int is_abandoned(Carrier_t *crr)
{
- return crr->cpool.abandoned.next != NULL;
-}
-
-static ERTS_INLINE void
-link_abandoned_carrier(ErtsDoubleLink_t* list, Carrier_t *crr)
-{
- ASSERT(!is_abandoned(crr));
-
- link_edl_after(list, &crr->cpool.abandoned);
-
- ASSERT(crr->cpool.abandoned.next != &crr->cpool.abandoned);
- ASSERT(crr->cpool.abandoned.prev != &crr->cpool.abandoned);
+ return crr->cpool.state != ERTS_MBC_IS_HOME;
}
static ERTS_INLINE void
unlink_abandoned_carrier(Carrier_t *crr)
{
- ASSERT(is_in_list(&crr->cpool.orig_allctr->cpool.pooled_list,
- &crr->cpool.abandoned) ||
- is_in_list(&crr->cpool.orig_allctr->cpool.traitor_list,
- &crr->cpool.abandoned));
-
- unlink_edl(&crr->cpool.abandoned);
-
- crr->cpool.abandoned.next = NULL;
- crr->cpool.abandoned.prev = NULL;
+ if (crr->cpool.state == ERTS_MBC_WAS_POOLED) {
+ aoff_remove_pooled_mbc(crr->cpool.orig_allctr, crr);
+ }
}
static ERTS_INLINE void
@@ -1243,24 +1179,19 @@ clear_busy_pool_carrier(Allctr_t *allctr, Carrier_t *crr)
{
if (crr) {
erts_aint_t max_size;
- erts_aint_t new_val;
+ erts_aint_t iallctr;
max_size = (erts_aint_t) allctr->largest_fblk_in_mbc(allctr, crr);
erts_atomic_set_nob(&crr->cpool.max_size, max_size);
- new_val = (((erts_aint_t) allctr)|ERTS_CRR_ALCTR_FLG_IN_POOL);
+ iallctr = erts_atomic_read_nob(&crr->allctr);
+ ERTS_ALC_CPOOL_ASSERT((iallctr & ~ERTS_CRR_ALCTR_FLG_HOMECOMING)
+ == ((erts_aint_t)allctr |
+ ERTS_CRR_ALCTR_FLG_IN_POOL |
+ ERTS_CRR_ALCTR_FLG_BUSY));
-#ifdef ERTS_ALC_CPOOL_DEBUG
- {
- erts_aint_t old_val = new_val|ERTS_CRR_ALCTR_FLG_BUSY;
-
- ERTS_ALC_CPOOL_ASSERT(old_val
- == erts_atomic_xchg_relb(&crr->allctr,
- new_val));
- }
-#else
- erts_atomic_set_relb(&crr->allctr, new_val);
-#endif
+ iallctr &= ~ERTS_CRR_ALCTR_FLG_BUSY;
+ erts_atomic_set_relb(&crr->allctr, iallctr);
}
}
@@ -1658,6 +1589,11 @@ dealloc_mbc(Allctr_t *allctr, Carrier_t *crr)
}
+static void set_new_allctr_abandon_limit(Allctr_t*);
+static void abandon_carrier(Allctr_t*, Carrier_t*);
+static void poolify_my_carrier(Allctr_t*, Carrier_t*);
+static void enqueue_homecoming(Allctr_t*, Carrier_t*);
+
static ERTS_INLINE Allctr_t*
get_pref_allctr(void *extra)
{
@@ -1724,9 +1660,23 @@ get_used_allctr(Allctr_t *pref_allctr, int pref_lock, void *p, UWord *sizep,
erts_aint_t act;
ERTS_ALC_CPOOL_ASSERT(!(iallctr & ERTS_CRR_ALCTR_FLG_BUSY));
- act = erts_atomic_cmpxchg_ddrb(&crr->allctr,
- iallctr|ERTS_CRR_ALCTR_FLG_BUSY,
- iallctr);
+ if (iallctr & ERTS_CRR_ALCTR_FLG_HOMECOMING) {
+ /*
+ * This carrier has just been given back to us by writing
+ * to crr->allctr with a write barrier (see abandon_carrier).
+ *
+ * We need a mathing read barrier to guarantee a correct view
+ * of the carrier for deallocation work.
+ */
+ act = erts_atomic_cmpxchg_rb(&crr->allctr,
+ iallctr|ERTS_CRR_ALCTR_FLG_BUSY,
+ iallctr);
+ }
+ else {
+ act = erts_atomic_cmpxchg_ddrb(&crr->allctr,
+ iallctr|ERTS_CRR_ALCTR_FLG_BUSY,
+ iallctr);
+ }
if (act == iallctr) {
*busy_pcrr_pp = crr;
break;
@@ -1742,13 +1692,6 @@ get_used_allctr(Allctr_t *pref_allctr, int pref_lock, void *p, UWord *sizep,
erts_mtx_unlock(&pref_allctr->mutex);
}
}
-
- ERTS_ALC_CPOOL_ASSERT(
- (((iallctr & ~ERTS_CRR_ALCTR_FLG_MASK) == (erts_aint_t) pref_allctr)
- ? (((iallctr & ERTS_CRR_ALCTR_FLG_MASK) == ERTS_CRR_ALCTR_FLG_IN_POOL)
- || ((iallctr & ERTS_CRR_ALCTR_FLG_MASK) == 0))
- : 1));
-
return used_allctr;
}
}
@@ -2000,9 +1943,9 @@ handle_delayed_fix_dealloc(Allctr_t *allctr, void *ptr)
/* Carrier migrated; need to redirect block to new owner... */
int cinit = used_allctr->dd.ix - allctr->dd.ix;
- ERTS_ALC_CPOOL_ASSERT(!busy_pcrr_p);
+ ERTS_ALC_CPOOL_ASSERT(!busy_pcrr_p);
- DEC_CC(allctr->calls.this_free);
+ DEC_CC(allctr->calls.this_free);
((ErtsAllctrFixDDBlock_t *) ptr)->fix_type = type;
if (ddq_enqueue(&used_allctr->dd.q, ptr, cinit))
@@ -2011,8 +1954,9 @@ handle_delayed_fix_dealloc(Allctr_t *allctr, void *ptr)
}
}
-static void
-schedule_dealloc_carrier(Allctr_t *allctr, Carrier_t *crr);
+static void schedule_dealloc_carrier(Allctr_t*, Carrier_t*);
+static void dealloc_my_carrier(Allctr_t*, Carrier_t*);
+
static ERTS_INLINE int
handle_delayed_dealloc(Allctr_t *allctr,
@@ -2074,39 +2018,61 @@ handle_delayed_dealloc(Allctr_t *allctr,
res = 1;
blk = UMEM2BLK(ptr);
- if (IS_FREE_LAST_MBC_BLK(blk)) {
+ if (blk->bhdr == HOMECOMING_MBC_BLK_HDR) {
/*
* A multiblock carrier that previously has been migrated away
- * from us and now is back to be deallocated. For more info
- * see schedule_dealloc_carrier().
- *
- * Note that we cannot use FBLK_TO_MBC(blk) since it
- * data has been overwritten by the queue.
+ * from us, was sent back to us either because
+ * - it became empty and we need to deallocated it, or
+ * - it was inserted into the pool and we need to update our pooled_tree
*/
- Carrier_t *crr = FIRST_BLK_TO_MBC(allctr, blk);
-
- /* Restore word overwritten by the dd-queue as it will be read
- * if this carrier is pulled from dc_list by cpool_fetch()
- */
- ERTS_ALC_CPOOL_ASSERT(FBLK_TO_MBC(blk) != crr);
- ERTS_CT_ASSERT(sizeof(ErtsAllctrDDBlock_t) == sizeof(void*));
-#ifdef MBC_ABLK_OFFSET_BITS
- blk->u.carrier = crr;
-#else
- blk->carrier = crr;
-#endif
+ Carrier_t *crr = ErtsContainerStruct(blk, Carrier_t,
+ cpool.homecoming_dd.blk);
+ Block_t* first_blk = MBC_TO_FIRST_BLK(allctr, crr);
+ erts_aint_t iallctr;
ERTS_ALC_CPOOL_ASSERT(ERTS_ALC_IS_CPOOL_ENABLED(allctr));
ERTS_ALC_CPOOL_ASSERT(allctr == crr->cpool.orig_allctr);
- ERTS_ALC_CPOOL_ASSERT(((erts_aint_t) allctr)
- != (erts_atomic_read_nob(&crr->allctr)
- & ~ERTS_CRR_ALCTR_FLG_MASK));
-
- erts_atomic_set_nob(&crr->allctr, ((erts_aint_t) allctr));
- schedule_dealloc_carrier(allctr, crr);
+ iallctr = erts_atomic_read_nob(&crr->allctr);
+ ASSERT(iallctr & ERTS_CRR_ALCTR_FLG_HOMECOMING);
+ while (1) {
+ if ((iallctr & (~ERTS_CRR_ALCTR_FLG_MASK |
+ ERTS_CRR_ALCTR_FLG_IN_POOL))
+ == (erts_aint_t)allctr) {
+ /*
+ * Carrier is home (mine and not in pool)
+ */
+ ASSERT(!(iallctr & ERTS_CRR_ALCTR_FLG_BUSY));
+ erts_atomic_set_nob(&crr->allctr, (erts_aint_t)allctr);
+ if (IS_FREE_LAST_MBC_BLK(first_blk))
+ dealloc_my_carrier(allctr, crr);
+ else
+ ASSERT(crr->cpool.state == ERTS_MBC_IS_HOME);
+ }
+ else {
+ erts_aint_t exp = iallctr;
+ erts_aint_t want = iallctr & ~ERTS_CRR_ALCTR_FLG_HOMECOMING;
+
+ iallctr = erts_atomic_cmpxchg_nob(&crr->allctr,
+ want,
+ exp);
+ if (iallctr != exp)
+ continue; /* retry */
+
+ ASSERT(crr->cpool.state != ERTS_MBC_IS_HOME);
+ unlink_abandoned_carrier(crr);
+ if (iallctr & ERTS_CRR_ALCTR_FLG_IN_POOL)
+ poolify_my_carrier(allctr, crr);
+ else
+ crr->cpool.state = ERTS_MBC_WAS_TRAITOR;
+ }
+ break;
+ }
}
else {
+ ASSERT(IS_SBC_BLK(blk) || (ABLK_TO_MBC(blk) !=
+ ErtsContainerStruct(blk, Carrier_t,
+ cpool.homecoming_dd.blk)));
INC_CC(allctr->calls.this_free);
@@ -2148,20 +2114,26 @@ enqueue_dealloc_other_instance(ErtsAlcType_t type,
erts_alloc_notify_delayed_dealloc(allctr->ix);
}
-
-static void
-set_new_allctr_abandon_limit(Allctr_t *allctr);
-static void
-abandon_carrier(Allctr_t *allctr, Carrier_t *crr);
-
+static ERTS_INLINE void
+update_pooled_tree(Allctr_t *allctr, Carrier_t *crr, Uint blk_sz)
+{
+ if (allctr == crr->cpool.orig_allctr && crr->cpool.state == ERTS_MBC_WAS_POOLED) {
+ /*
+ * Update pooled_tree with a potentially new (larger) max_sz
+ */
+ AOFF_RBTree_t* crr_node = &crr->cpool.pooled;
+ if (blk_sz > crr_node->hdr.bhdr) {
+ crr_node->hdr.bhdr = blk_sz;
+ erts_aoff_larger_max_size(crr_node);
+ }
+ }
+}
static ERTS_INLINE void
check_abandon_carrier(Allctr_t *allctr, Block_t *fblk, Carrier_t **busy_pcrr_pp)
{
Carrier_t *crr;
-
- if (busy_pcrr_pp && *busy_pcrr_pp)
- return;
+ UWord ncrr_in_pool, largest_fblk;
if (!ERTS_ALC_IS_CPOOL_ENABLED(allctr))
return;
@@ -2170,8 +2142,7 @@ check_abandon_carrier(Allctr_t *allctr, Block_t *fblk, Carrier_t **busy_pcrr_pp)
if (--allctr->cpool.check_limit_count <= 0)
set_new_allctr_abandon_limit(allctr);
- if (!erts_thr_progress_is_managed_thread())
- return;
+ ASSERT(erts_thr_progress_is_managed_thread());
if (allctr->cpool.disable_abandon)
return;
@@ -2179,6 +2150,9 @@ check_abandon_carrier(Allctr_t *allctr, Block_t *fblk, Carrier_t **busy_pcrr_pp)
if (allctr->mbcs.blocks.curr.size > allctr->cpool.abandon_limit)
return;
+ ncrr_in_pool = erts_atomic_read_nob(&allctr->cpool.stat.no_carriers);
+ if (ncrr_in_pool >= allctr->cpool.in_pool_limit)
+ return;
crr = FBLK_TO_MBC(fblk);
@@ -2189,9 +2163,14 @@ check_abandon_carrier(Allctr_t *allctr, Block_t *fblk, Carrier_t **busy_pcrr_pp)
return;
if (crr->cpool.thr_prgr != ERTS_THR_PRGR_INVALID
- && !erts_thr_progress_has_reached(crr->cpool.thr_prgr))
- return;
+ && !erts_thr_progress_has_reached(crr->cpool.thr_prgr))
+ return;
+
+ largest_fblk = allctr->largest_fblk_in_mbc(allctr, crr);
+ if (largest_fblk < allctr->cpool.fblk_min_limit)
+ return;
+ erts_atomic_set_nob(&crr->cpool.max_size, largest_fblk);
abandon_carrier(allctr, crr);
}
@@ -2237,6 +2216,7 @@ dealloc_block(Allctr_t *allctr, void *ptr, ErtsAlcFixList_t *fix, int dec_cc_on_
else {
Carrier_t *busy_pcrr_p;
Allctr_t *used_allctr;
+
used_allctr = get_used_allctr(allctr, ERTS_ALC_TS_PREF_LOCK_NO, ptr,
NULL, &busy_pcrr_p);
if (used_allctr == allctr) {
@@ -2253,10 +2233,10 @@ dealloc_block(Allctr_t *allctr, void *ptr, ErtsAlcFixList_t *fix, int dec_cc_on_
/* Carrier migrated; need to redirect block to new owner... */
int cinit = used_allctr->dd.ix - allctr->dd.ix;
- ERTS_ALC_CPOOL_ASSERT(!busy_pcrr_p);
+ ERTS_ALC_CPOOL_ASSERT(!busy_pcrr_p);
- if (dec_cc_on_redirect)
- DEC_CC(allctr->calls.this_free);
+ if (dec_cc_on_redirect)
+ DEC_CC(allctr->calls.this_free);
if (ddq_enqueue(&used_allctr->dd.q, ptr, cinit))
erts_alloc_notify_delayed_dealloc(used_allctr->ix);
}
@@ -2500,15 +2480,16 @@ mbc_free(Allctr_t *allctr, void *p, Carrier_t **busy_pcrr_pp)
ASSERT(blk_sz % sizeof(Unit_t) == 0);
ASSERT(IS_MBC_BLK(blk));
- if (is_first_blk
- && is_last_blk
- && allctr->main_carrier != FIRST_BLK_TO_MBC(allctr, blk)) {
- destroy_carrier(allctr, blk, busy_pcrr_pp);
+ if (is_first_blk && is_last_blk && crr != allctr->main_carrier) {
+ destroy_carrier(allctr, blk, busy_pcrr_pp);
}
else {
(*allctr->link_free_block)(allctr, blk);
HARD_CHECK_BLK_CARRIER(allctr, blk);
- check_abandon_carrier(allctr, blk, busy_pcrr_pp);
+ if (busy_pcrr_pp && *busy_pcrr_pp)
+ update_pooled_tree(allctr, crr, blk_sz);
+ else
+ check_abandon_carrier(allctr, blk, busy_pcrr_pp);
}
}
@@ -2542,8 +2523,19 @@ mbc_realloc(Allctr_t *allctr, void *p, Uint size, Uint32 alcu_flgs,
return NULL;
#else /* !MBC_REALLOC_ALWAYS_MOVES */
- if (busy_pcrr_pp && *busy_pcrr_pp)
- goto realloc_move; /* Don't want to use carrier in pool */
+ if (busy_pcrr_pp && *busy_pcrr_pp) {
+ /*
+ * Don't want to use carrier in pool
+ */
+ new_p = mbc_alloc(allctr, size);
+ if (!new_p)
+ return NULL;
+ new_blk = UMEM2BLK(new_p);
+ ASSERT(!(IS_MBC_BLK(new_blk) && ABLK_TO_MBC(new_blk) == *busy_pcrr_pp));
+ sys_memcpy(new_p, p, MIN(size, old_blk_sz - ABLK_HDR_SZ));
+ mbc_free(allctr, p, busy_pcrr_pp);
+ return new_p;
+ }
get_blk_sz = blk_sz = UMEMSZ2BLKSZ(allctr, size);
@@ -2776,7 +2768,7 @@ mbc_realloc(Allctr_t *allctr, void *p, Uint size, Uint32 alcu_flgs,
if (cand_blk_sz < get_blk_sz) {
/* We wont fit in cand_blk get a new one */
- realloc_move:
+
#endif /* !MBC_REALLOC_ALWAYS_MOVES */
new_p = mbc_alloc(allctr, size);
@@ -2880,8 +2872,7 @@ mbc_realloc(Allctr_t *allctr, void *p, Uint size, Uint32 alcu_flgs,
#define ERTS_ALC_MAX_DEALLOC_CARRIER 10
-#define ERTS_ALC_CPOOL_MAX_FETCH_INSPECT 20
-#define ERTS_ALC_CPOOL_MAX_TRAITOR_INSPECT 10
+#define ERTS_ALC_CPOOL_MAX_FETCH_INSPECT 100
#define ERTS_ALC_CPOOL_CHECK_LIMIT_COUNT 100
#define ERTS_ALC_CPOOL_MAX_FAILED_STAT_READS 3
@@ -3045,19 +3036,18 @@ cpool_insert(Allctr_t *allctr, Carrier_t *crr)
ErtsAlcCPoolData_t *cpd1p, *cpd2p;
erts_aint_t val;
ErtsAlcCPoolData_t *sentinel = &carrier_pool[allctr->alloc_no].sentinel;
+ Allctr_t *orig_allctr = crr->cpool.orig_allctr;
ERTS_ALC_CPOOL_ASSERT(allctr->alloc_no == ERTS_ALC_A_INVALID /* testcase */
|| erts_thr_progress_is_managed_thread());
- ERTS_ALC_CPOOL_ASSERT(erts_atomic_read_nob(&crr->allctr)
- == (erts_aint_t) allctr);
- erts_atomic_add_nob(&allctr->cpool.stat.blocks_size,
+ erts_atomic_add_nob(&orig_allctr->cpool.stat.blocks_size,
(erts_aint_t) crr->cpool.blocks_size);
- erts_atomic_add_nob(&allctr->cpool.stat.no_blocks,
+ erts_atomic_add_nob(&orig_allctr->cpool.stat.no_blocks,
(erts_aint_t) crr->cpool.blocks);
- erts_atomic_add_nob(&allctr->cpool.stat.carriers_size,
+ erts_atomic_add_nob(&orig_allctr->cpool.stat.carriers_size,
(erts_aint_t) CARRIER_SZ(crr));
- erts_atomic_inc_nob(&allctr->cpool.stat.no_carriers);
+ erts_atomic_inc_nob(&orig_allctr->cpool.stat.no_carriers);
/*
* We search in 'next' direction and begin by passing
@@ -3118,8 +3108,6 @@ cpool_insert(Allctr_t *allctr, Carrier_t *crr)
(erts_aint_t) &crr->cpool,
(erts_aint_t) cpd1p);
- erts_atomic_set_wb(&crr->allctr,
- ((erts_aint_t) allctr)|ERTS_CRR_ALCTR_FLG_IN_POOL);
LTTNG3(carrier_pool_put, ERTS_ALC_A2AD(allctr->alloc_no), allctr->ix, CARRIER_SZ(crr));
}
@@ -3221,130 +3209,126 @@ cpool_delete(Allctr_t *allctr, Allctr_t *prev_allctr, Carrier_t *crr)
static Carrier_t *
cpool_fetch(Allctr_t *allctr, UWord size)
{
- int i, i_stop, has_passed_sentinel;
+ enum { IGNORANT, HAS_SEEN_SENTINEL, THE_LAST_ONE } loop_state;
+ int i;
Carrier_t *crr;
+ Carrier_t *reinsert_crr = NULL;
ErtsAlcCPoolData_t *cpdp;
- ErtsAlcCPoolData_t *cpool_entrance;
+ ErtsAlcCPoolData_t *cpool_entrance = NULL;
ErtsAlcCPoolData_t *sentinel;
- ErtsDoubleLink_t* dl;
- ErtsDoubleLink_t* first_old_traitor;
ERTS_ALC_CPOOL_ASSERT(allctr->alloc_no == ERTS_ALC_A_INVALID /* testcase */
|| erts_thr_progress_is_managed_thread());
i = ERTS_ALC_CPOOL_MAX_FETCH_INSPECT;
- first_old_traitor = allctr->cpool.traitor_list.next;
- cpool_entrance = NULL;
LTTNG3(carrier_pool_get, ERTS_ALC_A2AD(allctr->alloc_no), allctr->ix, (unsigned long)size);
/*
- * Search my own pooled_list,
+ * Search my own pooled_tree,
* i.e my abandoned carriers that were in the pool last time I checked.
*/
+ do {
+ erts_aint_t exp, act;
+
+ crr = aoff_lookup_pooled_mbc(allctr, size);
+ if (!crr)
+ break;
+
+ ASSERT(crr->cpool.state == ERTS_MBC_WAS_POOLED);
+ ASSERT(crr->cpool.orig_allctr == allctr);
+
+ aoff_remove_pooled_mbc(allctr, crr);
+
+ exp = erts_atomic_read_nob(&crr->allctr);
+ if (exp & ERTS_CRR_ALCTR_FLG_IN_POOL) {
+ ASSERT((exp & ~ERTS_CRR_ALCTR_FLG_MASK) == (erts_aint_t)allctr);
+ if (erts_atomic_read_nob(&crr->cpool.max_size) < size) {
+ /*
+ * This carrier has been fetched and inserted back again
+ * by a foreign allocator. That's why it has a stale search size.
+ */
+ ASSERT(exp & ERTS_CRR_ALCTR_FLG_HOMECOMING);
+ crr->cpool.pooled.hdr.bhdr = erts_atomic_read_nob(&crr->cpool.max_size);
+ aoff_add_pooled_mbc(allctr, crr);
+ INC_CC(allctr->cpool.stat.skip_size);
+ continue;
+ }
+ else if (exp & ERTS_CRR_ALCTR_FLG_BUSY) {
+ /*
+ * This must be our own carrier as part of a realloc call.
+ * Skip it to make things simpler.
+ * Must wait to re-insert to not be found again by lookup.
+ */
+ ASSERT(!reinsert_crr);
+ reinsert_crr = crr;
+ INC_CC(allctr->cpool.stat.skip_busy);
+ continue;
+ }
- dl = allctr->cpool.pooled_list.next;
- while(dl != &allctr->cpool.pooled_list) {
- erts_aint_t exp, act;
- crr = (Carrier_t *) (((char *) dl) - offsetof(Carrier_t, cpool.abandoned));
-
- ASSERT(!is_in_list(&allctr->cpool.traitor_list, dl));
- ASSERT(crr->cpool.orig_allctr == allctr);
- dl = dl->next;
- exp = erts_atomic_read_rb(&crr->allctr);
- if ((exp & ERTS_CRR_ALCTR_FLG_MASK) == ERTS_CRR_ALCTR_FLG_IN_POOL
- && erts_atomic_read_nob(&crr->cpool.max_size) >= size) {
- /* Try to fetch it... */
- act = erts_atomic_cmpxchg_mb(&crr->allctr,
- (erts_aint_t) allctr,
- exp);
- if (act == exp) {
- cpool_delete(allctr, ((Allctr_t *) (act & ~ERTS_CRR_ALCTR_FLG_MASK)), crr);
- unlink_abandoned_carrier(crr);
-
- /* Move sentinel to continue next search from here */
- relink_edl_before(dl, &allctr->cpool.pooled_list);
- return crr;
- }
- exp = act;
- }
- if (exp & ERTS_CRR_ALCTR_FLG_IN_POOL) {
- if (!cpool_entrance)
- cpool_entrance = &crr->cpool;
- }
- else { /* Not in pool, move to traitor_list */
- unlink_abandoned_carrier(crr);
- link_abandoned_carrier(&allctr->cpool.traitor_list, crr);
- }
- if (--i <= 0) {
- /* Move sentinel to continue next search from here */
- relink_edl_before(dl, &allctr->cpool.pooled_list);
- return NULL;
- }
- }
+ /* Try to fetch it... */
+ act = erts_atomic_cmpxchg_mb(&crr->allctr,
+ exp & ~ERTS_CRR_ALCTR_FLG_IN_POOL,
+ exp);
+ if (act == exp) {
+ cpool_delete(allctr, allctr, crr);
+ crr->cpool.state = ERTS_MBC_IS_HOME;
+
+ if (reinsert_crr)
+ aoff_add_pooled_mbc(allctr, reinsert_crr);
+ return crr;
+ }
+ exp = act;
+ INC_CC(allctr->cpool.stat.skip_race);
+ }
+ else
+ INC_CC(allctr->cpool.stat.skip_not_pooled);
- /* Now search traitor_list.
- * i.e carriers employed by other allocators last time I checked.
- * They might have been abandoned since then.
- */
+ /* Not in pool anymore */
+ ASSERT(!(exp & ERTS_CRR_ALCTR_FLG_BUSY));
+ crr->cpool.state = ERTS_MBC_WAS_TRAITOR;
- i_stop = (i < ERTS_ALC_CPOOL_MAX_TRAITOR_INSPECT ?
- 0 : i - ERTS_ALC_CPOOL_MAX_TRAITOR_INSPECT);
- dl = first_old_traitor;
- while(dl != &allctr->cpool.traitor_list) {
- erts_aint_t exp, act;
- crr = (Carrier_t *) (((char *) dl) - offsetof(Carrier_t, cpool.abandoned));
- ASSERT(dl != &allctr->cpool.pooled_list);
- ASSERT(crr->cpool.orig_allctr == allctr);
- dl = dl->next;
- exp = erts_atomic_read_rb(&crr->allctr);
- if (exp & ERTS_CRR_ALCTR_FLG_IN_POOL) {
- if (!(exp & ERTS_CRR_ALCTR_FLG_BUSY)
- && erts_atomic_read_nob(&crr->cpool.max_size) >= size) {
- /* Try to fetch it... */
- act = erts_atomic_cmpxchg_mb(&crr->allctr,
- (erts_aint_t) allctr,
- exp);
- if (act == exp) {
- cpool_delete(allctr, ((Allctr_t *) (act & ~ERTS_CRR_ALCTR_FLG_MASK)), crr);
- unlink_abandoned_carrier(crr);
+ }while (--i > 0);
- /* Move sentinel to continue next search from here */
- relink_edl_before(dl, &allctr->cpool.traitor_list);
- return crr;
- }
- exp = act;
- }
- if (exp & ERTS_CRR_ALCTR_FLG_IN_POOL) {
- if (!cpool_entrance)
- cpool_entrance = &crr->cpool;
+ if (reinsert_crr)
+ aoff_add_pooled_mbc(allctr, reinsert_crr);
- /* Move to pooled_list */
- unlink_abandoned_carrier(crr);
- link_abandoned_carrier(&allctr->cpool.pooled_list, crr);
- }
- }
- if (--i <= i_stop) {
- /* Move sentinel to continue next search from here */
- relink_edl_before(dl, &allctr->cpool.traitor_list);
- if (i > 0)
- break;
- else
- return NULL;
- }
+ /*
+ * Try find a nice cpool_entrance
+ */
+ while (allctr->cpool.pooled_tree) {
+ erts_aint_t iallctr;
+
+ crr = ErtsContainerStruct(allctr->cpool.pooled_tree, Carrier_t, cpool.pooled);
+ iallctr = erts_atomic_read_nob(&crr->allctr);
+ if (iallctr & ERTS_CRR_ALCTR_FLG_IN_POOL) {
+ cpool_entrance = &crr->cpool;
+ break;
+ }
+ /* Not in pool anymore */
+ ASSERT(!(iallctr & ERTS_CRR_ALCTR_FLG_BUSY));
+ aoff_remove_pooled_mbc(allctr, crr);
+ crr->cpool.state = ERTS_MBC_WAS_TRAITOR;
+
+ if (--i <= 0) {
+ INC_CC(allctr->cpool.stat.fail_pooled);
+ return NULL;
+ }
}
+
/*
* Finally search the shared pool and try employ foreign carriers
*/
-
sentinel = &carrier_pool[allctr->alloc_no].sentinel;
if (cpool_entrance) {
- /* We saw a pooled carried above, use it as entrance into the pool
+ /*
+ * We saw a pooled carried above, use it as entrance into the pool
*/
cpdp = cpool_entrance;
}
else {
- /* No pooled carried seen above. Start search at cpool sentinel,
+ /*
+ * No pooled carried seen above. Start search at cpool sentinel,
* but begin by passing one element before trying to fetch.
* This in order to avoid contention with threads inserting elements.
*/
@@ -3354,8 +3338,8 @@ cpool_fetch(Allctr_t *allctr, UWord size)
goto check_dc_list;
}
- has_passed_sentinel = 0;
- while (1) {
+ loop_state = IGNORANT;
+ do {
erts_aint_t exp;
cpdp = cpool_aint2cpd(cpool_read(&cpdp->prev));
if (cpdp == cpool_entrance) {
@@ -3364,38 +3348,52 @@ cpool_fetch(Allctr_t *allctr, UWord size)
if (cpdp == sentinel)
break;
}
- i = 0; /* Last one to inspect */
+ loop_state = THE_LAST_ONE;
}
else if (cpdp == sentinel) {
- if (has_passed_sentinel) {
+ if (loop_state == HAS_SEEN_SENTINEL) {
/* We been here before. cpool_entrance must have been removed */
+ INC_CC(allctr->cpool.stat.entrance_removed);
break;
}
cpdp = cpool_aint2cpd(cpool_read(&cpdp->prev));
if (cpdp == sentinel)
break;
- has_passed_sentinel = 1;
+ loop_state = HAS_SEEN_SENTINEL;
}
- crr = (Carrier_t *)(((char *)cpdp) - offsetof(Carrier_t, cpool));
+ crr = ErtsContainerStruct(cpdp, Carrier_t, cpool);
exp = erts_atomic_read_rb(&crr->allctr);
- if (((exp & (ERTS_CRR_ALCTR_FLG_MASK)) == ERTS_CRR_ALCTR_FLG_IN_POOL)
- && (erts_atomic_read_nob(&cpdp->max_size) >= size)) {
+
+ if (erts_atomic_read_nob(&cpdp->max_size) < size) {
+ INC_CC(allctr->cpool.stat.skip_size);
+ }
+ else if ((exp & (ERTS_CRR_ALCTR_FLG_IN_POOL | ERTS_CRR_ALCTR_FLG_BUSY))
+ == ERTS_CRR_ALCTR_FLG_IN_POOL) {
erts_aint_t act;
- /* Try to fetch it... */
- act = erts_atomic_cmpxchg_mb(&crr->allctr,
- (erts_aint_t) allctr,
- exp);
+ erts_aint_t want = (((erts_aint_t) allctr)
+ | (exp & ERTS_CRR_ALCTR_FLG_HOMECOMING));
+ /* Try to fetch it... */
+ act = erts_atomic_cmpxchg_mb(&crr->allctr, want, exp);
if (act == exp) {
cpool_delete(allctr, ((Allctr_t *) (act & ~ERTS_CRR_ALCTR_FLG_MASK)), crr);
if (crr->cpool.orig_allctr == allctr) {
unlink_abandoned_carrier(crr);
- }
+ crr->cpool.state = ERTS_MBC_IS_HOME;
+ }
return crr;
}
}
- if (--i <= 0)
+
+ if (exp & ERTS_CRR_ALCTR_FLG_BUSY)
+ INC_CC(allctr->cpool.stat.skip_busy);
+ else
+ INC_CC(allctr->cpool.stat.skip_race);
+
+ if (--i <= 0) {
+ INC_CC(allctr->cpool.stat.fail_shared);
return NULL;
- }
+ }
+ }while (loop_state != THE_LAST_ONE);
check_dc_list:
/* Last; check our own pending dealloc carrier list... */
@@ -3404,23 +3402,23 @@ check_dc_list:
if (erts_atomic_read_nob(&crr->cpool.max_size) >= size) {
Block_t* blk;
unlink_carrier(&allctr->cpool.dc_list, crr);
-#ifdef ERTS_ALC_CPOOL_DEBUG
- ERTS_ALC_CPOOL_ASSERT(erts_atomic_xchg_nob(&crr->allctr,
- ((erts_aint_t) allctr))
- == (((erts_aint_t) allctr) & ~ERTS_CRR_ALCTR_FLG_MASK));
-#else
- erts_atomic_set_nob(&crr->allctr, ((erts_aint_t) allctr));
-#endif
+ ERTS_ALC_CPOOL_ASSERT(erts_atomic_read_nob(&crr->allctr)
+ == ((erts_aint_t) allctr));
blk = MBC_TO_FIRST_BLK(allctr, crr);
ASSERT(FBLK_TO_MBC(blk) == crr);
allctr->link_free_block(allctr, blk);
return crr;
}
crr = crr->prev;
- if (--i <= 0)
+ if (--i <= 0) {
+ INC_CC(allctr->cpool.stat.fail_pend_dealloc);
return NULL;
+ }
}
+ if (i != ERTS_ALC_CPOOL_MAX_FETCH_INSPECT)
+ INC_CC(allctr->cpool.stat.fail);
+
return NULL;
}
@@ -3475,9 +3473,6 @@ static void
schedule_dealloc_carrier(Allctr_t *allctr, Carrier_t *crr)
{
Allctr_t *orig_allctr;
- Block_t *blk;
- int check_pending_dealloc;
- erts_aint_t max_size;
ASSERT(IS_MB_CARRIER(crr));
@@ -3488,9 +3483,17 @@ schedule_dealloc_carrier(Allctr_t *allctr, Carrier_t *crr)
orig_allctr = crr->cpool.orig_allctr;
- if (allctr != orig_allctr) {
- int cinit = orig_allctr->dd.ix - allctr->dd.ix;
-
+ if (allctr == orig_allctr) {
+ if (!(erts_atomic_read_nob(&crr->allctr) & ERTS_CRR_ALCTR_FLG_HOMECOMING)) {
+ dealloc_my_carrier(allctr, crr);
+ }
+ /*else
+ * Carrier was abandoned earlier by other thread and
+ * is still waiting for us in dd-queue.
+ * handle_delayed_dealloc() will handle it when crr is dequeued.
+ */
+ }
+ else {
/*
* We send the carrier to its origin for deallocation.
* This in order:
@@ -3499,29 +3502,39 @@ schedule_dealloc_carrier(Allctr_t *allctr, Carrier_t *crr)
* - to ensure that we always only reuse empty carriers
* originating from our own thread specific mseg_alloc
* instance which is beneficial on NUMA systems.
- *
- * The receiver will recognize that this is a carrier to
- * deallocate (and not a block which is the common case)
- * since the block is an mbc block that is free and last
- * in the carrier.
*/
- blk = MBC_TO_FIRST_BLK(allctr, crr);
- ERTS_ALC_CPOOL_ASSERT(IS_FREE_LAST_MBC_BLK(blk));
-
- ERTS_ALC_CPOOL_ASSERT(IS_MBC_FIRST_ABLK(allctr, blk));
- ERTS_ALC_CPOOL_ASSERT(crr == FBLK_TO_MBC(blk));
- ERTS_ALC_CPOOL_ASSERT(crr == FIRST_BLK_TO_MBC(allctr, blk));
- ERTS_ALC_CPOOL_ASSERT(((erts_aint_t) allctr)
- == (erts_atomic_read_nob(&crr->allctr)
- & ~ERTS_CRR_ALCTR_FLG_MASK));
+ erts_aint_t iallctr;
+#ifdef ERTS_ALC_CPOOL_DEBUG
+ Block_t* first_blk = MBC_TO_FIRST_BLK(allctr, crr);
+ ERTS_ALC_CPOOL_ASSERT(IS_FREE_LAST_MBC_BLK(first_blk));
+
+ ERTS_ALC_CPOOL_ASSERT(IS_MBC_FIRST_ABLK(allctr, first_blk));
+ ERTS_ALC_CPOOL_ASSERT(crr == FBLK_TO_MBC(first_blk));
+ ERTS_ALC_CPOOL_ASSERT(crr == FIRST_BLK_TO_MBC(allctr, first_blk));
+ ERTS_ALC_CPOOL_ASSERT((erts_atomic_read_nob(&crr->allctr)
+ & ~ERTS_CRR_ALCTR_FLG_HOMECOMING)
+ == (erts_aint_t) allctr);
+#endif
- if (ddq_enqueue(&orig_allctr->dd.q, BLK2UMEM(blk), cinit))
- erts_alloc_notify_delayed_dealloc(orig_allctr->ix);
- return;
+ iallctr = (erts_aint_t)orig_allctr | ERTS_CRR_ALCTR_FLG_HOMECOMING;
+ if (!(erts_atomic_xchg_nob(&crr->allctr, iallctr)
+ & ERTS_CRR_ALCTR_FLG_HOMECOMING)) {
+ enqueue_homecoming(allctr, crr);
+ }
}
+}
+
+static void dealloc_my_carrier(Allctr_t *allctr, Carrier_t *crr)
+{
+ Block_t *blk;
+ int check_pending_dealloc;
+ erts_aint_t max_size;
- if (is_abandoned(crr))
- unlink_abandoned_carrier(crr);
+ ERTS_ALC_CPOOL_ASSERT(allctr == crr->cpool.orig_allctr);
+ if (is_abandoned(crr)) {
+ unlink_abandoned_carrier(crr);
+ crr->cpool.state = ERTS_MBC_IS_HOME;
+ }
if (crr->cpool.thr_prgr == ERTS_THR_PRGR_INVALID
|| erts_thr_progress_has_reached(crr->cpool.thr_prgr)) {
@@ -3553,6 +3566,7 @@ schedule_dealloc_carrier(Allctr_t *allctr, Carrier_t *crr)
static ERTS_INLINE void
cpool_init_carrier_data(Allctr_t *allctr, Carrier_t *crr)
{
+ crr->cpool.homecoming_dd.blk.bhdr = HOMECOMING_MBC_BLK_HDR;
erts_atomic_init_nob(&crr->cpool.next, ERTS_AINT_NULL);
erts_atomic_init_nob(&crr->cpool.prev, ERTS_AINT_NULL);
crr->cpool.orig_allctr = allctr;
@@ -3571,8 +3585,7 @@ cpool_init_carrier_data(Allctr_t *allctr, Carrier_t *crr)
limit = (csz/100)*allctr->cpool.util_limit;
crr->cpool.abandon_limit = limit;
}
- crr->cpool.abandoned.next = NULL;
- crr->cpool.abandoned.prev = NULL;
+ crr->cpool.state = ERTS_MBC_IS_HOME;
}
static void
@@ -3598,23 +3611,62 @@ set_new_allctr_abandon_limit(Allctr_t *allctr)
static void
abandon_carrier(Allctr_t *allctr, Carrier_t *crr)
{
- erts_aint_t max_size;
+ erts_aint_t iallctr;
- STAT_MBC_CPOOL_INSERT(allctr, crr);
+ STAT_MBC_ABANDON(allctr, crr);
unlink_carrier(&allctr->mbc_list, crr);
- if (crr->cpool.orig_allctr == allctr) {
- link_abandoned_carrier(&allctr->cpool.pooled_list, crr);
+ allctr->remove_mbc(allctr, crr);
+ set_new_allctr_abandon_limit(allctr);
+
+ cpool_insert(allctr, crr);
+
+
+ iallctr = erts_atomic_read_nob(&crr->allctr);
+ if (allctr == crr->cpool.orig_allctr) {
+ /* preserve HOMECOMING flag */
+ ASSERT((iallctr & ~ERTS_CRR_ALCTR_FLG_HOMECOMING) == (erts_aint_t)allctr);
+ erts_atomic_set_wb(&crr->allctr, iallctr | ERTS_CRR_ALCTR_FLG_IN_POOL);
+ poolify_my_carrier(allctr, crr);
}
+ else {
+ ASSERT((iallctr & ~ERTS_CRR_ALCTR_FLG_HOMECOMING) == (erts_aint_t)allctr);
+ iallctr = ((erts_aint_t)crr->cpool.orig_allctr |
+ ERTS_CRR_ALCTR_FLG_HOMECOMING |
+ ERTS_CRR_ALCTR_FLG_IN_POOL);
+ if (!(erts_atomic_xchg_wb(&crr->allctr, iallctr)
+ & ERTS_CRR_ALCTR_FLG_HOMECOMING)) {
+
+ enqueue_homecoming(allctr, crr);
+ }
+ }
+}
- allctr->remove_mbc(allctr, crr);
+static void
+enqueue_homecoming(Allctr_t* allctr, Carrier_t* crr)
+{
+ Allctr_t* orig_allctr = crr->cpool.orig_allctr;
+ const int cinit = orig_allctr->dd.ix - allctr->dd.ix;
+ Block_t* dd_blk = &crr->cpool.homecoming_dd.blk;
- max_size = (erts_aint_t) allctr->largest_fblk_in_mbc(allctr, crr);
- erts_atomic_set_nob(&crr->cpool.max_size, max_size);
+ /*
+ * The receiver will recognize this as a carrier
+ * (and not a block which is the common case)
+ * since the block header is HOMECOMING_MBC_BLK_HDR.
+ */
+ ASSERT(dd_blk->bhdr == HOMECOMING_MBC_BLK_HDR);
+ if (ddq_enqueue(&orig_allctr->dd.q, BLK2UMEM(dd_blk), cinit))
+ erts_alloc_notify_delayed_dealloc(orig_allctr->ix);
+}
- cpool_insert(allctr, crr);
+static void
+poolify_my_carrier(Allctr_t *allctr, Carrier_t *crr)
+{
+ ERTS_ALC_CPOOL_ASSERT(allctr == crr->cpool.orig_allctr);
- set_new_allctr_abandon_limit(allctr);
+ crr->cpool.pooled.hdr.bhdr = erts_atomic_read_nob(&crr->cpool.max_size);
+ aoff_add_pooled_mbc(allctr, crr);
+ crr->cpool.state = ERTS_MBC_WAS_POOLED;
}
static void
@@ -3771,6 +3823,7 @@ create_carrier(Allctr_t *allctr, Uint umem_sz, UWord flags)
crr = cpool_fetch(allctr, blk_sz);
if (crr) {
STAT_MBC_CPOOL_FETCH(allctr, crr);
+ INC_CC(allctr->cpool.stat.fetch);
link_carrier(&allctr->mbc_list, crr);
(*allctr->add_mbc)(allctr, crr);
blk = (*allctr->get_free_block)(allctr, blk_sz, NULL, 0);
@@ -4128,13 +4181,18 @@ destroy_carrier(Allctr_t *allctr, Block_t *blk, Carrier_t **busy_pcrr_pp)
#endif
if (busy_pcrr_pp && *busy_pcrr_pp) {
+ erts_aint_t iallctr = erts_atomic_read_nob(&crr->allctr);
ERTS_ALC_CPOOL_ASSERT(*busy_pcrr_pp == crr);
- *busy_pcrr_pp = NULL;
- ERTS_ALC_CPOOL_ASSERT(erts_atomic_read_nob(&crr->allctr)
- == (((erts_aint_t) allctr)
- | ERTS_CRR_ALCTR_FLG_IN_POOL
- | ERTS_CRR_ALCTR_FLG_BUSY));
- erts_atomic_set_nob(&crr->allctr, ((erts_aint_t) allctr));
+ ERTS_ALC_CPOOL_ASSERT((iallctr & ~ERTS_CRR_ALCTR_FLG_HOMECOMING)
+ == (((erts_aint_t) allctr)
+ | ERTS_CRR_ALCTR_FLG_IN_POOL
+ | ERTS_CRR_ALCTR_FLG_BUSY));
+ ERTS_ALC_CPOOL_ASSERT(allctr == crr->cpool.orig_allctr);
+
+ *busy_pcrr_pp = NULL;
+ erts_atomic_set_nob(&crr->allctr,
+ (iallctr & ~(ERTS_CRR_ALCTR_FLG_IN_POOL |
+ ERTS_CRR_ALCTR_FLG_BUSY)));
cpool_delete(allctr, allctr, crr);
}
else
@@ -4184,7 +4242,6 @@ static struct {
Eterm e;
Eterm t;
Eterm ramv;
- Eterm sbct;
#if HAVE_ERTS_MSEG
Eterm asbcst;
Eterm rsbcst;
@@ -4201,6 +4258,8 @@ static struct {
Eterm smbcs;
Eterm mbcgs;
Eterm acul;
+ Eterm acnl;
+ Eterm acfml;
#if HAVE_ERTS_MSEG
Eterm mmc;
@@ -4212,6 +4271,17 @@ static struct {
Eterm mbcs;
Eterm mbcs_pool;
+ Eterm fetch;
+ Eterm fail_pooled;
+ Eterm fail_shared;
+ Eterm fail_pend_dealloc;
+ Eterm fail;
+ Eterm skip_size;
+ Eterm skip_busy;
+ Eterm skip_not_pooled;
+ Eterm skip_homecoming;
+ Eterm skip_race;
+ Eterm entrance_removed;
Eterm sbcs;
Eterm sys_alloc_carriers_size;
@@ -4272,7 +4342,6 @@ init_atoms(Allctr_t *allctr)
AM_INIT(e);
AM_INIT(t);
AM_INIT(ramv);
- AM_INIT(sbct);
#if HAVE_ERTS_MSEG
AM_INIT(asbcst);
AM_INIT(rsbcst);
@@ -4289,6 +4358,8 @@ init_atoms(Allctr_t *allctr)
AM_INIT(smbcs);
AM_INIT(mbcgs);
AM_INIT(acul);
+ AM_INIT(acnl);
+ AM_INIT(acfml);
#if HAVE_ERTS_MSEG
AM_INIT(mmc);
@@ -4300,6 +4371,17 @@ init_atoms(Allctr_t *allctr)
AM_INIT(mbcs);
AM_INIT(mbcs_pool);
+ AM_INIT(fetch);
+ AM_INIT(fail_pooled);
+ AM_INIT(fail_shared);
+ AM_INIT(fail_pend_dealloc);
+ AM_INIT(fail);
+ AM_INIT(skip_size);
+ AM_INIT(skip_busy);
+ AM_INIT(skip_not_pooled);
+ AM_INIT(skip_homecoming);
+ AM_INIT(skip_race);
+ AM_INIT(entrance_removed);
AM_INIT(sbcs);
AM_INIT(sys_alloc_carriers_size);
@@ -4583,9 +4665,56 @@ info_cpool(Allctr_t *allctr,
if (hpp || szp) {
res = NIL;
+
+ if (!sz_only) {
+ add_3tup(hpp, szp, &res, am.fail_pooled,
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_GIGA_VAL(allctr->cpool.stat.fail_pooled)),
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_VAL(allctr->cpool.stat.fail_pooled)));
+
+ add_3tup(hpp, szp, &res, am.fail_shared,
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_GIGA_VAL(allctr->cpool.stat.fail_shared)),
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_VAL(allctr->cpool.stat.fail_shared)));
+
+ add_3tup(hpp, szp, &res, am.fail_pend_dealloc,
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_GIGA_VAL(allctr->cpool.stat.fail_pend_dealloc)),
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_VAL(allctr->cpool.stat.fail_pend_dealloc)));
+
+ add_3tup(hpp, szp, &res, am.fail,
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_GIGA_VAL(allctr->cpool.stat.fail)),
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_VAL(allctr->cpool.stat.fail)));
+
+ add_3tup(hpp, szp, &res, am.fetch,
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_GIGA_VAL(allctr->cpool.stat.fetch)),
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_VAL(allctr->cpool.stat.fetch)));
+
+ add_3tup(hpp, szp, &res, am.skip_size,
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_GIGA_VAL(allctr->cpool.stat.skip_size)),
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_VAL(allctr->cpool.stat.skip_size)));
+
+ add_3tup(hpp, szp, &res, am.skip_busy,
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_GIGA_VAL(allctr->cpool.stat.skip_busy)),
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_VAL(allctr->cpool.stat.skip_busy)));
+
+ add_3tup(hpp, szp, &res, am.skip_not_pooled,
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_GIGA_VAL(allctr->cpool.stat.skip_not_pooled)),
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_VAL(allctr->cpool.stat.skip_not_pooled)));
+
+ add_3tup(hpp, szp, &res, am.skip_homecoming,
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_GIGA_VAL(allctr->cpool.stat.skip_homecoming)),
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_VAL(allctr->cpool.stat.skip_homecoming)));
+
+ add_3tup(hpp, szp, &res, am.skip_race,
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_GIGA_VAL(allctr->cpool.stat.skip_race)),
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_VAL(allctr->cpool.stat.skip_race)));
+
+ add_3tup(hpp, szp, &res, am.entrance_removed,
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_GIGA_VAL(allctr->cpool.stat.entrance_removed)),
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_VAL(allctr->cpool.stat.entrance_removed)));
+
add_2tup(hpp, szp, &res,
am.carriers_size,
bld_unstable_uint(hpp, szp, csz));
+ }
if (!sz_only)
add_2tup(hpp, szp, &res,
am.carriers,
@@ -4844,7 +4973,7 @@ info_options(Allctr_t *allctr,
Uint *szp)
{
Eterm res = THE_NON_VALUE;
- int acul;
+ UWord acul, acnl, acfml;
if (!allctr) {
if (print_to_p)
@@ -4857,6 +4986,8 @@ info_options(Allctr_t *allctr,
}
acul = allctr->cpool.util_limit;
+ acnl = allctr->cpool.in_pool_limit;
+ acfml = allctr->cpool.fblk_min_limit;
if (print_to_p) {
char topt[21]; /* Enough for any 64-bit integer */
@@ -4884,7 +5015,7 @@ info_options(Allctr_t *allctr,
"option lmbcs: %beu\n"
"option smbcs: %beu\n"
"option mbcgs: %beu\n"
- "option acul: %d\n",
+ "option acul: %bpu\n",
topt,
allctr->ramv ? "true" : "false",
allctr->sbc_threshold,
@@ -4909,9 +5040,15 @@ info_options(Allctr_t *allctr,
hpp, szp);
if (hpp || szp) {
+ add_2tup(hpp, szp, &res,
+ am.acfml,
+ bld_uint(hpp, szp, acfml));
+ add_2tup(hpp, szp, &res,
+ am.acnl,
+ bld_uint(hpp, szp, acnl));
add_2tup(hpp, szp, &res,
am.acul,
- bld_uint(hpp, szp, (UWord) acul));
+ bld_uint(hpp, szp, acul));
add_2tup(hpp, szp, &res,
am.mbcgs,
bld_uint(hpp, szp, allctr->mbc_growth_stages));
@@ -4947,7 +5084,7 @@ info_options(Allctr_t *allctr,
bld_uint(hpp, szp, allctr->mseg_opt.abs_shrink_th));
#endif
add_2tup(hpp, szp, &res,
- am.sbct,
+ am_sbct,
bld_uint(hpp, szp, allctr->sbc_threshold));
add_2tup(hpp, szp, &res, am.ramv, allctr->ramv ? am_true : am_false);
add_2tup(hpp, szp, &res, am.t, (allctr->t ? am_true : am_false));
@@ -5481,12 +5618,13 @@ erts_alcu_free_thr_pref(ErtsAlcType_t type, void *extra, void *p)
pref_allctr = get_pref_allctr(extra);
used_allctr = get_used_allctr(pref_allctr, ERTS_ALC_TS_PREF_LOCK_IF_USED,
p, NULL, &busy_pcrr_p);
- if (pref_allctr != used_allctr)
+ if (pref_allctr != used_allctr) {
enqueue_dealloc_other_instance(type,
- used_allctr,
- p,
- (used_allctr->dd.ix
- - pref_allctr->dd.ix));
+ used_allctr,
+ p,
+ (used_allctr->dd.ix
+ - pref_allctr->dd.ix));
+ }
else {
ERTS_ALCU_DBG_CHK_THR_ACCESS(used_allctr);
do_erts_alcu_free(type, used_allctr, p, &busy_pcrr_p);
@@ -5854,6 +5992,37 @@ erts_alcu_realloc_mv_thr_pref(ErtsAlcType_t type, void *extra,
+static Uint adjust_sbct(Allctr_t* allctr, Uint sbct)
+{
+#ifndef ARCH_64
+ if (sbct > 0) {
+ Uint max_mbc_block_sz = UNIT_CEILING(sbct - 1 + ABLK_HDR_SZ);
+ if (max_mbc_block_sz + UNIT_FLOOR(allctr->min_block_size - 1) > MBC_ABLK_SZ_MASK
+ || max_mbc_block_sz < sbct) { /* wrap around */
+ /*
+ * By limiting sbc_threshold to (hard limit - min_block_size)
+ * we avoid having to split off free "residue blocks"
+ * smaller than min_block_size.
+ */
+ max_mbc_block_sz = MBC_ABLK_SZ_MASK - UNIT_FLOOR(allctr->min_block_size - 1);
+ sbct = max_mbc_block_sz - ABLK_HDR_SZ + 1;
+ }
+ }
+#endif
+ return sbct;
+}
+
+int erts_alcu_try_set_dyn_param(Allctr_t* allctr, Eterm param, Uint value)
+{
+ const Uint MIN_DYN_SBCT = 4000; /* a lame catastrophe prevention */
+
+ if (param == am_sbct && value >= MIN_DYN_SBCT) {
+ allctr->sbc_threshold = adjust_sbct(allctr, value);
+ return 1;
+ }
+ return 0;
+}
+
/* ------------------------------------------------------------------------- */
int
@@ -5941,10 +6110,7 @@ erts_alcu_start(Allctr_t *allctr, AllctrInit_t *init)
allctr->min_block_size = sz;
}
- allctr->cpool.pooled_list.next = &allctr->cpool.pooled_list;
- allctr->cpool.pooled_list.prev = &allctr->cpool.pooled_list;
- allctr->cpool.traitor_list.next = &allctr->cpool.traitor_list;
- allctr->cpool.traitor_list.prev = &allctr->cpool.traitor_list;
+ allctr->cpool.pooled_tree = NULL;
allctr->cpool.dc_list.first = NULL;
allctr->cpool.dc_list.last = NULL;
allctr->cpool.abandon_limit = 0;
@@ -5954,24 +6120,18 @@ erts_alcu_start(Allctr_t *allctr, AllctrInit_t *init)
erts_atomic_init_nob(&allctr->cpool.stat.carriers_size, 0);
erts_atomic_init_nob(&allctr->cpool.stat.no_carriers, 0);
allctr->cpool.check_limit_count = ERTS_ALC_CPOOL_CHECK_LIMIT_COUNT;
- allctr->cpool.util_limit = init->ts ? 0 : init->acul;
-
- allctr->sbc_threshold = init->sbct;
-#ifndef ARCH_64
- if (allctr->sbc_threshold > 0) {
- Uint max_mbc_block_sz = UNIT_CEILING(allctr->sbc_threshold - 1 + ABLK_HDR_SZ);
- if (max_mbc_block_sz + UNIT_FLOOR(allctr->min_block_size - 1) > MBC_ABLK_SZ_MASK
- || max_mbc_block_sz < allctr->sbc_threshold) { /* wrap around */
- /*
- * By limiting sbc_threshold to (hard limit - min_block_size)
- * we avoid having to split off free "residue blocks"
- * smaller than min_block_size.
- */
- max_mbc_block_sz = MBC_ABLK_SZ_MASK - UNIT_FLOOR(allctr->min_block_size - 1);
- allctr->sbc_threshold = max_mbc_block_sz - ABLK_HDR_SZ + 1;
- }
+ if (!init->ts && init->acul && init->acnl) {
+ allctr->cpool.util_limit = init->acul;
+ allctr->cpool.in_pool_limit = init->acnl;
+ allctr->cpool.fblk_min_limit = init->acfml;
}
-#endif
+ else {
+ allctr->cpool.util_limit = 0;
+ allctr->cpool.in_pool_limit = 0;
+ allctr->cpool.fblk_min_limit = 0;
+ }
+
+ allctr->sbc_threshold = adjust_sbct(allctr, init->sbct);
#if HAVE_ERTS_MSEG
if (allctr->mseg_opt.abs_shrink_th > ~((UWord) 0) / 100)
@@ -6022,6 +6182,9 @@ erts_alcu_start(Allctr_t *allctr, AllctrInit_t *init)
allctr->sys_realloc = &erts_alcu_sys_realloc;
allctr->sys_dealloc = &erts_alcu_sys_dealloc;
}
+
+ allctr->try_set_dyn_param = &erts_alcu_try_set_dyn_param;
+
#if HAVE_ERTS_MSEG
if (init->mseg_alloc) {
ASSERT(init->mseg_realloc && init->mseg_dealloc);
@@ -6036,6 +6199,7 @@ erts_alcu_start(Allctr_t *allctr, AllctrInit_t *init)
allctr->mseg_realloc = &erts_alcu_mseg_realloc;
allctr->mseg_dealloc = &erts_alcu_mseg_dealloc;
}
+
/* If a custom carrier alloc function is specified, make sure it's used */
if (init->mseg_alloc && !init->sys_alloc) {
allctr->crr_set_flgs = CFLG_FORCE_MSEG;
diff --git a/erts/emulator/beam/erl_alloc_util.h b/erts/emulator/beam/erl_alloc_util.h
index faeb5ef368..9a6de2bb75 100644
--- a/erts/emulator/beam/erl_alloc_util.h
+++ b/erts/emulator/beam/erl_alloc_util.h
@@ -61,7 +61,9 @@ typedef struct {
UWord lmbcs;
UWord smbcs;
UWord mbcgs;
- int acul;
+ UWord acul;
+ UWord acnl;
+ UWord acfml;
void *fix;
size_t *fix_type_size;
@@ -116,6 +118,8 @@ typedef struct {
1024*1024, /* (bytes) smbcs: smallest mbc size */\
10, /* (amount) mbcgs: mbc growth stages */\
0, /* (%) acul: abandon carrier utilization limit */\
+ 1000, /* (amount) acnl: abandoned carriers number limit */\
+ 0, /* (bytes) acfml: abandoned carrier fblk min limit */\
/* --- Data not options -------------------------------------------- */\
NULL, /* (ptr) fix */\
NULL /* (ptr) fix_type_size */\
@@ -149,6 +153,8 @@ typedef struct {
128*1024, /* (bytes) smbcs: smallest mbc size */\
10, /* (amount) mbcgs: mbc growth stages */\
0, /* (%) acul: abandon carrier utilization limit */\
+ 1000, /* (amount) acnl: abandoned carriers number limit */\
+ 0, /* (bytes) acfml: abandoned carrier fblk min limit */\
/* --- Data not options -------------------------------------------- */\
NULL, /* (ptr) fix */\
NULL /* (ptr) fix_type_size */\
@@ -216,6 +222,8 @@ void erts_alcu_literal_32_sys_dealloc(Allctr_t*, void *ptr, Uint size, int supe
void erts_lcnt_update_allocator_locks(int enable);
#endif
+int erts_alcu_try_set_dyn_param(Allctr_t*, Eterm param, Uint value);
+
#endif /* !ERL_ALLOC_UTIL__ */
#if defined(GET_ERL_ALLOC_UTIL_IMPL) && !defined(ERL_ALLOC_UTIL_IMPL__)
@@ -296,41 +304,7 @@ void erts_lcnt_update_allocator_locks(int enable);
typedef union {char c[ERTS_ALLOC_ALIGN_BYTES]; long l; double d;} Unit_t;
-
-typedef struct ErtsDoubleLink_t_ {
- struct ErtsDoubleLink_t_ *next;
- struct ErtsDoubleLink_t_ *prev;
-}ErtsDoubleLink_t;
-
-typedef struct {
- erts_atomic_t next;
- erts_atomic_t prev;
- Allctr_t *orig_allctr; /* read-only while carrier is alive */
- ErtsThrPrgrVal thr_prgr;
- erts_atomic_t max_size;
- UWord abandon_limit;
- UWord blocks;
- UWord blocks_size;
- ErtsDoubleLink_t abandoned; /* node in pooled_list or traitor_list */
-} ErtsAlcCPoolData_t;
-
-
typedef struct Carrier_t_ Carrier_t;
-struct Carrier_t_ {
- UWord chdr;
- Carrier_t *next;
- Carrier_t *prev;
- erts_atomic_t allctr;
- ErtsAlcCPoolData_t cpool; /* Overwritten by block if sbc */
-};
-
-#define ERTS_ALC_CARRIER_TO_ALLCTR(C) \
- ((Allctr_t *) (erts_atomic_read_nob(&(C)->allctr) & ~FLG_MASK))
-
-typedef struct {
- Carrier_t *first;
- Carrier_t *last;
-} CarrierList_t;
typedef struct {
UWord bhdr;
@@ -344,6 +318,22 @@ typedef struct {
#endif
} Block_t;
+typedef union ErtsAllctrDDBlock_t_ ErtsAllctrDDBlock_t;
+
+union ErtsAllctrDDBlock_t_ {
+ erts_atomic_t atmc_next;
+ ErtsAllctrDDBlock_t *ptr_next;
+};
+
+typedef struct {
+ Block_t blk;
+#if !MBC_ABLK_OFFSET_BITS
+ ErtsAllctrDDBlock_t umem_;
+#endif
+} ErtsFakeDDBlock_t;
+
+
+
#define THIS_FREE_BLK_HDR_FLG (((UWord) 1) << 0)
#define PREV_FREE_BLK_HDR_FLG (((UWord) 1) << 1)
#define LAST_BLK_HDR_FLG (((UWord) 1) << 2)
@@ -352,14 +342,13 @@ typedef struct {
(THIS_FREE_BLK_HDR_FLG | PREV_FREE_BLK_HDR_FLG | LAST_BLK_HDR_FLG)
/*
- * FREE_LAST_MBC_BLK_HDR_FLGS is a special flag combo used for
- * distinguishing empty mbc's from allocated blocks in
- * handle_delayed_dealloc().
+ * HOMECOMING_MBC_BLK_HDR is a special block header combo used for
+ * distinguishing MBC's from allocated blocks in handle_delayed_dealloc().
*/
-#define FREE_LAST_MBC_BLK_HDR_FLGS (THIS_FREE_BLK_HDR_FLG | LAST_BLK_HDR_FLG)
+#define HOMECOMING_MBC_BLK_HDR (THIS_FREE_BLK_HDR_FLG | LAST_BLK_HDR_FLG)
#define IS_FREE_LAST_MBC_BLK(B) \
- (((B)->bhdr & FLG_MASK) == FREE_LAST_MBC_BLK_HDR_FLGS)
+ (((B)->bhdr & FLG_MASK) == (THIS_FREE_BLK_HDR_FLG | LAST_BLK_HDR_FLG))
#define IS_SBC_BLK(B) (((B)->bhdr & FLG_MASK) == SBC_BLK_HDR_FLG)
#define IS_MBC_BLK(B) (!IS_SBC_BLK((B)))
@@ -383,6 +372,57 @@ typedef struct {
typedef UWord FreeBlkFtr_t; /* Footer of a free block */
+/* This AOFF stuff really belong in erl_ao_firstfit_alloc.h */
+typedef struct AOFF_RBTree_t_ AOFF_RBTree_t;
+struct AOFF_RBTree_t_ {
+ Block_t hdr;
+ AOFF_RBTree_t *parent;
+ AOFF_RBTree_t *left;
+ AOFF_RBTree_t *right;
+ Uint32 flags;
+ Uint32 max_sz; /* of all blocks in this sub-tree */
+};
+
+void aoff_add_pooled_mbc(Allctr_t*, Carrier_t*);
+void aoff_remove_pooled_mbc(Allctr_t*, Carrier_t*);
+Carrier_t* aoff_lookup_pooled_mbc(Allctr_t*, Uint size);
+void erts_aoff_larger_max_size(AOFF_RBTree_t *node);
+
+typedef struct {
+ ErtsFakeDDBlock_t homecoming_dd;
+ erts_atomic_t next;
+ erts_atomic_t prev;
+ Allctr_t *orig_allctr; /* read-only while carrier is alive */
+ ErtsThrPrgrVal thr_prgr;
+ erts_atomic_t max_size;
+ UWord abandon_limit;
+ UWord blocks;
+ UWord blocks_size;
+ enum {
+ ERTS_MBC_IS_HOME,
+ ERTS_MBC_WAS_POOLED,
+ ERTS_MBC_WAS_TRAITOR
+ } state;
+ AOFF_RBTree_t pooled; /* node in pooled_tree */
+} ErtsAlcCPoolData_t;
+
+struct Carrier_t_ {
+ UWord chdr;
+ Carrier_t *next;
+ Carrier_t *prev;
+ erts_atomic_t allctr;
+ ErtsAlcCPoolData_t cpool; /* Overwritten by block if sbc */
+};
+
+#define ERTS_ALC_CARRIER_TO_ALLCTR(C) \
+ ((Allctr_t *) (erts_atomic_read_nob(&(C)->allctr) & ~FLG_MASK))
+
+typedef struct {
+ Carrier_t *first;
+ Carrier_t *last;
+} CarrierList_t;
+
+
typedef Uint64 CallCounter_t;
typedef struct {
@@ -419,13 +459,6 @@ typedef struct {
#endif
-typedef union ErtsAllctrDDBlock_t_ ErtsAllctrDDBlock_t;
-
-union ErtsAllctrDDBlock_t_ {
- erts_atomic_t atmc_next;
- ErtsAllctrDDBlock_t *ptr_next;
-};
-
typedef struct {
ErtsAllctrDDBlock_t marker;
erts_atomic_t last;
@@ -537,25 +570,37 @@ struct Allctr_t_ {
UWord crr_set_flgs;
UWord crr_clr_flgs;
- /* Carriers */
+ /* Carriers *employed* by this allocator */
CarrierList_t mbc_list;
CarrierList_t sbc_list;
struct {
- /* pooled_list, traitor list and dc_list contain only
- carriers _created_ by this allocator */
- ErtsDoubleLink_t pooled_list;
- ErtsDoubleLink_t traitor_list;
+ /* pooled_tree and dc_list contain only
+ carriers *created* by this allocator */
+ AOFF_RBTree_t* pooled_tree;
CarrierList_t dc_list;
UWord abandon_limit;
int disable_abandon;
int check_limit_count;
- int util_limit;
+ UWord util_limit; /* acul */
+ UWord in_pool_limit; /* acnl */
+ UWord fblk_min_limit; /* acmfl */
struct {
erts_atomic_t blocks_size;
erts_atomic_t no_blocks;
erts_atomic_t carriers_size;
erts_atomic_t no_carriers;
+ CallCounter_t fail_pooled;
+ CallCounter_t fail_shared;
+ CallCounter_t fail_pend_dealloc;
+ CallCounter_t fail;
+ CallCounter_t fetch;
+ CallCounter_t skip_size;
+ CallCounter_t skip_busy;
+ CallCounter_t skip_not_pooled;
+ CallCounter_t skip_homecoming;
+ CallCounter_t skip_race;
+ CallCounter_t entrance_removed;
} stat;
} cpool;
@@ -589,6 +634,8 @@ struct Allctr_t_ {
void* (*sys_realloc)(Allctr_t *allctr, void *ptr, Uint *size_p, Uint old_size, int superalign);
void (*sys_dealloc)(Allctr_t *allctr, void *ptr, Uint size, int superalign);
+ int (*try_set_dyn_param)(Allctr_t*, Eterm param, Uint value);
+
void (*init_atoms) (void);
#ifdef ERTS_ALLOC_UTIL_HARD_DEBUG
diff --git a/erts/emulator/beam/erl_ao_firstfit_alloc.c b/erts/emulator/beam/erl_ao_firstfit_alloc.c
index 05ba1f9891..f8a6101b95 100644
--- a/erts/emulator/beam/erl_ao_firstfit_alloc.c
+++ b/erts/emulator/beam/erl_ao_firstfit_alloc.c
@@ -20,7 +20,7 @@
/*
- * Description: An "address order first fit" allocator
+ * Description: A family of "first fit" allocator strategies
* based on a Red-Black (binary search) Tree. The search,
* insert, and delete operations are all O(log n) operations
* on a Red-Black Tree.
@@ -40,6 +40,10 @@
* sorting order. Blocks within the same carrier are sorted
* wrt size instead of address. The 'max_sz' field is maintained
* in order to dismiss entire carriers with too small blocks.
+ * Age Order:
+ * Carriers are ordered by creation time instead of address.
+ * Oldest carrier with a large enough free block is chosen.
+ * No age order supported for blocks.
*
* Authors: Rickard Green/Sverker Eriksson
*/
@@ -53,10 +57,12 @@
#include "erl_ao_firstfit_alloc.h"
#ifdef DEBUG
+# define IS_DEBUG 1
#if 0
#define HARD_DEBUG
#endif
#else
+# define IS_DEBUG 0
#undef HARD_DEBUG
#endif
@@ -92,18 +98,6 @@
#define RBT_ASSERT(x)
#endif
-
-/* Types... */
-typedef struct AOFF_RBTree_t_ AOFF_RBTree_t;
-
-struct AOFF_RBTree_t_ {
- Block_t hdr;
- AOFF_RBTree_t *parent;
- AOFF_RBTree_t *left;
- AOFF_RBTree_t *right;
- Uint32 flags;
- Uint32 max_sz; /* of all blocks in this sub-tree */
-};
#define AOFF_BLK_SZ(B) MBC_FBLK_SZ(&(B)->hdr)
/* BF block nodes keeps list of all with equal size
@@ -121,6 +115,7 @@ typedef struct AOFF_Carrier_t_ AOFF_Carrier_t;
struct AOFF_Carrier_t_ {
Carrier_t crr;
AOFF_RBTree_t rbt_node; /* My node in the carrier tree */
+ Sint64 birth_time;
AOFF_RBTree_t* root; /* Root of my block tree */
};
#define RBT_NODE_TO_MBC(PTR) ErtsContainerStruct((PTR), AOFF_Carrier_t, rbt_node)
@@ -136,12 +131,12 @@ struct AOFF_Carrier_t_ {
*/
#ifdef HARD_DEBUG
-# define HARD_CHECK_IS_MEMBER(ROOT,NODE) rbt_assert_is_member(ROOT,NODE)
-# define HARD_CHECK_TREE(CRR,FLV,ROOT,SZ) check_tree(CRR, FLV, ROOT, SZ)
-static AOFF_RBTree_t * check_tree(Carrier_t* within_crr, enum AOFF_Flavor flavor, AOFF_RBTree_t* root, Uint);
+# define HARD_CHECK_IS_MEMBER(ROOT,NODE) ASSERT(rbt_is_member(ROOT,NODE))
+# define HARD_CHECK_TREE(CRR,ORDER,ROOT,SZ) check_tree(CRR, ORDER, ROOT, SZ)
+static AOFF_RBTree_t * check_tree(Carrier_t*, enum AOFFSortOrder, AOFF_RBTree_t*, Uint);
#else
# define HARD_CHECK_IS_MEMBER(ROOT,NODE)
-# define HARD_CHECK_TREE(CRR,FLV,ROOT,SZ)
+# define HARD_CHECK_TREE(CRR,ORDER,ROOT,SZ)
#endif
@@ -179,25 +174,63 @@ static ERTS_INLINE void lower_max_size(AOFF_RBTree_t *node,
else ASSERT(new_max == old_max);
}
-static ERTS_INLINE SWord cmp_blocks(enum AOFF_Flavor flavor,
+/*
+ * Set possibly new larger 'max_sz' of node and propagate change toward root
+ */
+void erts_aoff_larger_max_size(AOFF_RBTree_t *node)
+{
+ AOFF_RBTree_t* x = node;
+ const Uint new_sz = node->hdr.bhdr;
+
+ ASSERT(!x->left || x->left->max_sz <= x->max_sz);
+ ASSERT(!x->right || x->right->max_sz <= x->max_sz);
+
+ while (new_sz > x->max_sz) {
+ x->max_sz = new_sz;
+ x = x->parent;
+ if (!x)
+ break;
+ }
+}
+
+/* Compare nodes for both carrier and block trees */
+static ERTS_INLINE SWord cmp_blocks(enum AOFFSortOrder order,
AOFF_RBTree_t* lhs, AOFF_RBTree_t* rhs)
{
ASSERT(lhs != rhs);
- ASSERT(flavor == AOFF_AOFF || FBLK_TO_MBC(&lhs->hdr) == FBLK_TO_MBC(&rhs->hdr));
- if (flavor != AOFF_AOFF) {
- SWord diff = (SWord)AOFF_BLK_SZ(lhs) - (SWord)AOFF_BLK_SZ(rhs);
- if (diff || flavor == AOFF_BF) return diff;
+ if (order == FF_AGEFF) {
+ AOFF_Carrier_t* lc = RBT_NODE_TO_MBC(lhs);
+ AOFF_Carrier_t* rc = RBT_NODE_TO_MBC(rhs);
+ Sint64 diff = lc->birth_time - rc->birth_time;
+ #ifdef ARCH_64
+ if (diff)
+ return diff;
+ #else
+ if (diff < 0)
+ return -1;
+ else if (diff > 0)
+ return 1;
+ #endif
+ }
+ else {
+ ASSERT(order == FF_AOFF || FBLK_TO_MBC(&lhs->hdr) == FBLK_TO_MBC(&rhs->hdr));
+ if (order != FF_AOFF) {
+ SWord diff = (SWord)AOFF_BLK_SZ(lhs) - (SWord)AOFF_BLK_SZ(rhs);
+ if (diff || order == FF_BF) return diff;
+ }
}
return (char*)lhs - (char*)rhs;
}
-static ERTS_INLINE SWord cmp_cand_blk(enum AOFF_Flavor flavor,
+/* Compare candidate block. Only for block tree */
+static ERTS_INLINE SWord cmp_cand_blk(enum AOFFSortOrder order,
Block_t* cand_blk, AOFF_RBTree_t* rhs)
{
- if (flavor != AOFF_AOFF) {
+ ASSERT(order != FF_AGEFF);
+ if (order != FF_AOFF) {
if (BLK_TO_MBC(cand_blk) == FBLK_TO_MBC(&rhs->hdr)) {
SWord diff = (SWord)MBC_BLK_SZ(cand_blk) - (SWord)MBC_FBLK_SZ(&rhs->hdr);
- if (diff || flavor == AOFF_BF) return diff;
+ if (diff || order == FF_BF) return diff;
}
}
return (char*)cand_blk - (char*)rhs;
@@ -218,11 +251,8 @@ static UWord aoff_largest_fblk_in_mbc(Allctr_t*, Carrier_t*);
/* Generic tree functions used by both carrier and block trees. */
static void rbt_delete(AOFF_RBTree_t** root, AOFF_RBTree_t* del);
-static void rbt_insert(enum AOFF_Flavor flavor, AOFF_RBTree_t** root, AOFF_RBTree_t* blk);
+static void rbt_insert(enum AOFFSortOrder, AOFF_RBTree_t** root, AOFF_RBTree_t* blk);
static AOFF_RBTree_t* rbt_search(AOFF_RBTree_t* root, Uint size);
-#ifdef HARD_DEBUG
-static int rbt_assert_is_member(AOFF_RBTree_t* root, AOFF_RBTree_t* node);
-#endif
static Eterm info_options(Allctr_t *, char *, fmtfn_t *, void *, Uint **, Uint *);
static void init_atoms(void);
@@ -230,10 +260,17 @@ static void init_atoms(void);
static int atoms_initialized = 0;
+#ifndef ERTS_HAVE_OS_MONOTONIC_TIME_SUPPORT
+static erts_atomic64_t birth_time_counter;
+#endif
+
void
erts_aoffalc_init(void)
{
atoms_initialized = 0;
+#ifndef ERTS_HAVE_OS_MONOTONIC_TIME_SUPPORT
+ erts_atomic64_init_nob(&birth_time_counter, 0);
+#endif
}
Allctr_t *
@@ -254,11 +291,12 @@ erts_aoffalc_start(AOFFAllctr_t *alc,
sys_memcpy((void *) alc, (void *) &zero.allctr, sizeof(AOFFAllctr_t));
- alc->flavor = aoffinit->flavor;
+ alc->blk_order = aoffinit->blk_order;
+ alc->crr_order = aoffinit->crr_order;
allctr->mbc_header_size = sizeof(AOFF_Carrier_t);
allctr->min_mbc_size = MIN_MBC_SZ;
allctr->min_mbc_first_free_size = MIN_MBC_FIRST_FREE_SZ;
- allctr->min_block_size = (aoffinit->flavor == AOFF_BF ?
+ allctr->min_block_size = (aoffinit->blk_order == FF_BF ?
sizeof(AOFF_RBTreeList_t):sizeof(AOFF_RBTree_t));
allctr->vsn_str = ERTS_ALC_AOFF_ALLOC_VSN_STR;
@@ -487,9 +525,9 @@ aoff_unlink_free_block(Allctr_t *allctr, Block_t *blk)
AOFF_Carrier_t *crr = (AOFF_Carrier_t*) FBLK_TO_MBC(&del->hdr);
ASSERT(crr->rbt_node.hdr.bhdr == crr->root->max_sz);
- HARD_CHECK_TREE(&crr->crr, alc->flavor, crr->root, 0);
+ HARD_CHECK_TREE(&crr->crr, alc->blk_order, crr->root, 0);
- if (alc->flavor == AOFF_BF) {
+ if (alc->blk_order == FF_BF) {
ASSERT(del->flags & IS_BF_FLG);
if (IS_LIST_ELEM(del)) {
/* Remove from list */
@@ -510,14 +548,14 @@ aoff_unlink_free_block(Allctr_t *allctr, Block_t *blk)
replace(&crr->root, (AOFF_RBTree_t*)del, LIST_NEXT(del));
- HARD_CHECK_TREE(&crr->crr, alc->flavor, crr->root, 0);
+ HARD_CHECK_TREE(&crr->crr, alc->blk_order, crr->root, 0);
return;
}
}
rbt_delete(&crr->root, (AOFF_RBTree_t*)del);
- HARD_CHECK_TREE(&crr->crr, alc->flavor, crr->root, 0);
+ HARD_CHECK_TREE(&crr->crr, alc->blk_order, crr->root, 0);
/* Update the carrier tree with a potentially new (lower) max_sz
*/
@@ -715,32 +753,33 @@ aoff_link_free_block(Allctr_t *allctr, Block_t *block)
ASSERT(allctr == ERTS_ALC_CARRIER_TO_ALLCTR(&blk_crr->crr));
ASSERT(blk_crr->rbt_node.hdr.bhdr == (blk_crr->root ? blk_crr->root->max_sz : 0));
- HARD_CHECK_TREE(&blk_crr->crr, alc->flavor, blk_crr->root, 0);
+ HARD_CHECK_TREE(&blk_crr->crr, alc->blk_order, blk_crr->root, 0);
- rbt_insert(alc->flavor, &blk_crr->root, blk);
+ rbt_insert(alc->blk_order, &blk_crr->root, blk);
- /* Update the carrier tree with a potentially new (larger) max_sz
- */
+ /*
+ * Update carrier tree with a potentially new (larger) max_sz
+ */
crr_node = &blk_crr->rbt_node;
if (blk_sz > crr_node->hdr.bhdr) {
- ASSERT(blk_sz == blk_crr->root->max_sz);
- crr_node->hdr.bhdr = blk_sz;
- while (blk_sz > crr_node->max_sz) {
- crr_node->max_sz = blk_sz;
- crr_node = crr_node->parent;
- if (!crr_node) break;
- }
+ ASSERT(blk_sz == blk_crr->root->max_sz);
+ crr_node->hdr.bhdr = blk_sz;
+ while (blk_sz > crr_node->max_sz) {
+ crr_node->max_sz = blk_sz;
+ crr_node = crr_node->parent;
+ if (!crr_node) break;
+ }
}
- HARD_CHECK_TREE(&blk_crr->crr, alc->flavor, blk_crr->root, 0);
+ HARD_CHECK_TREE(NULL, alc->crr_order, alc->mbc_root, 0);
}
static void
-rbt_insert(enum AOFF_Flavor flavor, AOFF_RBTree_t** root, AOFF_RBTree_t* blk)
+rbt_insert(enum AOFFSortOrder order, AOFF_RBTree_t** root, AOFF_RBTree_t* blk)
{
Uint blk_sz = AOFF_BLK_SZ(blk);
#ifdef DEBUG
- blk->flags = (flavor == AOFF_BF) ? IS_BF_FLG : 0;
+ blk->flags = (order == FF_BF) ? IS_BF_FLG : 0;
#else
blk->flags = 0;
#endif
@@ -760,7 +799,7 @@ rbt_insert(enum AOFF_Flavor flavor, AOFF_RBTree_t** root, AOFF_RBTree_t* blk)
if (x->max_sz < blk_sz) {
x->max_sz = blk_sz;
}
- diff = cmp_blocks(flavor, blk, x);
+ diff = cmp_blocks(order, blk, x);
if (diff < 0) {
if (!x->left) {
blk->parent = x;
@@ -778,7 +817,7 @@ rbt_insert(enum AOFF_Flavor flavor, AOFF_RBTree_t** root, AOFF_RBTree_t* blk)
x = x->right;
}
else {
- ASSERT(flavor == AOFF_BF);
+ ASSERT(order == FF_BF);
ASSERT(blk->flags & IS_BF_FLG);
ASSERT(x->flags & IS_BF_FLG);
SET_LIST_ELEM(blk);
@@ -798,7 +837,7 @@ rbt_insert(enum AOFF_Flavor flavor, AOFF_RBTree_t** root, AOFF_RBTree_t* blk)
if (IS_RED(blk->parent))
tree_insert_fixup(root, blk);
}
- if (flavor == AOFF_BF) {
+ if (order == FF_BF) {
SET_TREE_NODE(blk);
LIST_NEXT(blk) = NULL;
}
@@ -826,6 +865,16 @@ rbt_search(AOFF_RBTree_t* root, Uint size)
}
}
+Carrier_t* aoff_lookup_pooled_mbc(Allctr_t* allctr, Uint size)
+{
+ AOFF_RBTree_t* node;
+
+ if (!allctr->cpool.pooled_tree)
+ return NULL;
+ node = rbt_search(allctr->cpool.pooled_tree, size);
+ return node ? ErtsContainerStruct(node, Carrier_t, cpool.pooled) : NULL;
+}
+
static Block_t *
aoff_get_free_block(Allctr_t *allctr, Uint size,
Block_t *cand_blk, Uint cand_size)
@@ -850,7 +899,7 @@ aoff_get_free_block(Allctr_t *allctr, Uint size,
/* Get block within carrier tree
*/
#ifdef HARD_DEBUG
- dbg_blk = HARD_CHECK_TREE(&crr->crr, alc->flavor, crr->root, size);
+ dbg_blk = HARD_CHECK_TREE(&crr->crr, alc->blk_order, crr->root, size);
#endif
blk = rbt_search(crr->root, size);
@@ -863,7 +912,7 @@ aoff_get_free_block(Allctr_t *allctr, Uint size,
if (!blk)
return NULL;
- if (cand_blk && cmp_cand_blk(alc->flavor, cand_blk, blk) < 0) {
+ if (cand_blk && cmp_cand_blk(alc->blk_order, cand_blk, blk) < 0) {
return NULL; /* cand_blk was better */
}
@@ -872,23 +921,32 @@ aoff_get_free_block(Allctr_t *allctr, Uint size,
return (Block_t *) blk;
}
+static ERTS_INLINE Sint64 get_birth_time(void)
+{
+#ifdef ERTS_HAVE_OS_MONOTONIC_TIME_SUPPORT
+ return (Sint64) erts_os_monotonic_time();
+#else
+ return (Sint64) erts_atomic64_inc_read_nob(&birth_time_counter);
+#endif
+}
+
static void aoff_creating_mbc(Allctr_t *allctr, Carrier_t *carrier)
{
AOFFAllctr_t *alc = (AOFFAllctr_t *) allctr;
AOFF_Carrier_t *crr = (AOFF_Carrier_t*) carrier;
AOFF_RBTree_t **root = &alc->mbc_root;
- HARD_CHECK_TREE(NULL, 0, *root, 0);
+ HARD_CHECK_TREE(NULL, alc->crr_order, *root, 0);
- /* Link carrier in address order tree
- */
crr->rbt_node.hdr.bhdr = 0;
- rbt_insert(AOFF_AOFF, root, &crr->rbt_node);
+ if (alc->crr_order == FF_AGEFF || IS_DEBUG)
+ crr->birth_time = get_birth_time();
+ rbt_insert(alc->crr_order, root, &crr->rbt_node);
/* aoff_link_free_block will add free block later */
crr->root = NULL;
- HARD_CHECK_TREE(NULL, 0, *root, 0);
+ HARD_CHECK_TREE(NULL, alc->crr_order, *root, 0);
}
#define IS_CRR_IN_TREE(CRR,ROOT) \
@@ -911,27 +969,38 @@ static void aoff_add_mbc(Allctr_t *allctr, Carrier_t *carrier)
AOFF_RBTree_t **root = &alc->mbc_root;
ASSERT(!IS_CRR_IN_TREE(crr, *root));
- HARD_CHECK_TREE(NULL, 0, *root, 0);
+ HARD_CHECK_TREE(NULL, alc->crr_order, *root, 0);
+
+ rbt_insert(alc->crr_order, root, &crr->rbt_node);
+
+ HARD_CHECK_TREE(NULL, alc->crr_order, *root, 0);
+}
+
+void aoff_add_pooled_mbc(Allctr_t *allctr, Carrier_t *crr)
+{
+ AOFF_RBTree_t **root = &allctr->cpool.pooled_tree;
+
+ ASSERT(allctr == crr->cpool.orig_allctr);
+ HARD_CHECK_TREE(NULL, 0, *root, 0);
/* Link carrier in address order tree
*/
- rbt_insert(AOFF_AOFF, root, &crr->rbt_node);
+ rbt_insert(FF_AOFF, root, &crr->cpool.pooled);
HARD_CHECK_TREE(NULL, 0, *root, 0);
}
static void aoff_remove_mbc(Allctr_t *allctr, Carrier_t *carrier)
{
- AOFFAllctr_t *alc = (AOFFAllctr_t *) allctr;
- AOFF_Carrier_t *crr = (AOFF_Carrier_t*) carrier;
- AOFF_RBTree_t **root = &alc->mbc_root;
+ AOFF_RBTree_t **root = &((AOFFAllctr_t*)allctr)->mbc_root;
+ AOFF_Carrier_t *crr = (AOFF_Carrier_t*)carrier;
ASSERT(allctr == ERTS_ALC_CARRIER_TO_ALLCTR(carrier));
if (!IS_CRR_IN_TREE(crr,*root))
- return;
+ return;
- HARD_CHECK_TREE(NULL, 0, *root, 0);
+ HARD_CHECK_TREE(NULL, alc->crr_order, *root, 0);
rbt_delete(root, &crr->rbt_node);
crr->rbt_node.parent = NULL;
@@ -939,9 +1008,27 @@ static void aoff_remove_mbc(Allctr_t *allctr, Carrier_t *carrier)
crr->rbt_node.right = NULL;
crr->rbt_node.max_sz = crr->rbt_node.hdr.bhdr;
- HARD_CHECK_TREE(NULL, 0, *root, 0);
+ HARD_CHECK_TREE(NULL, alc->crr_order, *root, 0);
+}
+
+void aoff_remove_pooled_mbc(Allctr_t *allctr, Carrier_t *crr)
+{
+ ASSERT(allctr == crr->cpool.orig_allctr);
+
+ HARD_CHECK_TREE(NULL, 0, allctr->cpool.pooled_tree, 0);
+
+ rbt_delete(&allctr->cpool.pooled_tree, &crr->cpool.pooled);
+#ifdef DEBUG
+ crr->cpool.pooled.parent = NULL;
+ crr->cpool.pooled.left = NULL;
+ crr->cpool.pooled.right = NULL;
+ crr->cpool.pooled.max_sz = 0;
+#endif
+ HARD_CHECK_TREE(NULL, 0, allctr->cpool.pooled_tree, 0);
+
}
+
static UWord aoff_largest_fblk_in_mbc(Allctr_t* allctr, Carrier_t* carrier)
{
AOFF_Carrier_t *crr = (AOFF_Carrier_t*) carrier;
@@ -955,17 +1042,17 @@ static UWord aoff_largest_fblk_in_mbc(Allctr_t* allctr, Carrier_t* carrier)
* info_options()
*/
+static const char* flavor_str[2][3] = {
+ {"ageffcaoff", "ageffcaobf", "ageffcbf"},
+ { "aoff", "aoffcaobf", "aoffcbf"}
+};
+static Eterm flavor_atoms[2][3];
+
static struct {
Eterm as;
- Eterm aoff;
- Eterm aoffcaobf;
- Eterm aoffcbf;
-#ifdef DEBUG
- Eterm end_of_atoms;
-#endif
} am;
-static void ERTS_INLINE atom_init(Eterm *atom, char *name)
+static void ERTS_INLINE atom_init(Eterm *atom, const char *name)
{
*atom = am_atom_put(name, strlen(name));
}
@@ -974,28 +1061,16 @@ static void ERTS_INLINE atom_init(Eterm *atom, char *name)
static void
init_atoms(void)
{
-#ifdef DEBUG
- Eterm *atom;
-#endif
+ int i, j;
if (atoms_initialized)
return;
-#ifdef DEBUG
- for (atom = (Eterm *) &am; atom <= &am.end_of_atoms; atom++) {
- *atom = THE_NON_VALUE;
- }
-#endif
AM_INIT(as);
- AM_INIT(aoff);
- AM_INIT(aoffcaobf);
- AM_INIT(aoffcbf);
-#ifdef DEBUG
- for (atom = (Eterm *) &am; atom < &am.end_of_atoms; atom++) {
- ASSERT(*atom != THE_NON_VALUE);
- }
-#endif
+ for (i = 0; i < 2; i++)
+ for (j = 0; j < 3; j++)
+ atom_init(&flavor_atoms[i][j], flavor_str[i][j]);
atoms_initialized = 1;
}
@@ -1021,15 +1096,16 @@ info_options(Allctr_t *allctr,
{
AOFFAllctr_t* alc = (AOFFAllctr_t*) allctr;
Eterm res = THE_NON_VALUE;
- const char* flavor_str[3] = {"aoff", "aoffcaobf", "aoffcbf"};
- Eterm flavor_atom[3] = {am.aoff, am.aoffcaobf, am.aoffcbf};
+
+ ASSERT(alc->crr_order >= 0 && alc->crr_order <= 1);
+ ASSERT(alc->blk_order >= 1 && alc->blk_order <= 3);
if (print_to_p) {
erts_print(*print_to_p,
print_to_arg,
"%sas: %s\n",
prefix,
- flavor_str[alc->flavor]);
+ flavor_str[alc->crr_order][alc->blk_order-1]);
}
if (hpp || szp) {
@@ -1039,7 +1115,8 @@ info_options(Allctr_t *allctr,
__FILE__, __LINE__);;
res = NIL;
- add_2tup(hpp, szp, &res, am.as, flavor_atom[alc->flavor]);
+ add_2tup(hpp, szp, &res, am.as,
+ flavor_atoms[alc->crr_order][alc->blk_order-1]);
}
return res;
@@ -1057,7 +1134,7 @@ UWord
erts_aoffalc_test(UWord op, UWord a1, UWord a2)
{
switch (op) {
- case 0x500: return (UWord) ((AOFFAllctr_t *) a1)->flavor == AOFF_AOBF;
+ case 0x500: return (UWord) ((AOFFAllctr_t *) a1)->blk_order == FF_AOBF;
case 0x501: {
AOFF_RBTree_t *node = ((AOFFAllctr_t *) a1)->mbc_root;
Uint size = (Uint) a2;
@@ -1072,7 +1149,7 @@ erts_aoffalc_test(UWord op, UWord a1, UWord a2)
case 0x507: return (UWord) IS_TREE_NODE((AOFF_RBTree_t *) a1);
case 0x508: return (UWord) 0; /* IS_BF_ALGO */
case 0x509: return (UWord) ((AOFF_RBTree_t *) a1)->max_sz;
- case 0x50a: return (UWord) ((AOFFAllctr_t *) a1)->flavor == AOFF_BF;
+ case 0x50a: return (UWord) ((AOFFAllctr_t *) a1)->blk_order == FF_BF;
case 0x50b: return (UWord) LIST_PREV(a1);
default: ASSERT(0); return ~((UWord) 0);
}
@@ -1085,12 +1162,13 @@ erts_aoffalc_test(UWord op, UWord a1, UWord a2)
#ifdef HARD_DEBUG
-
-static int rbt_assert_is_member(AOFF_RBTree_t* root, AOFF_RBTree_t* node)
+static int rbt_is_member(AOFF_RBTree_t* root, AOFF_RBTree_t* node)
{
while (node != root) {
- ASSERT(node->parent);
- ASSERT(node->parent->left == node || node->parent->right == node);
+ if (!node->parent || (node->parent->left != node &&
+ node->parent->right != node)) {
+ return 0;
+ }
node = node->parent;
}
return 1;
@@ -1132,7 +1210,7 @@ static void print_tree(AOFF_RBTree_t*);
*/
static AOFF_RBTree_t *
-check_tree(Carrier_t* within_crr, enum AOFF_Flavor flavor, AOFF_RBTree_t* root, Uint size)
+check_tree(Carrier_t* within_crr, enum AOFFSortOrder order, AOFF_RBTree_t* root, Uint size)
{
AOFF_RBTree_t *res = NULL;
Sint blacks;
@@ -1144,7 +1222,8 @@ check_tree(Carrier_t* within_crr, enum AOFF_Flavor flavor, AOFF_RBTree_t* root,
#ifdef PRINT_TREE
print_tree(root);
#endif
- ASSERT(within_crr || flavor == AOFF_AOFF);
+ ASSERT((within_crr && order >= FF_AOFF) ||
+ (!within_crr && order <= FF_AOFF));
if (!root)
return res;
@@ -1202,7 +1281,7 @@ check_tree(Carrier_t* within_crr, enum AOFF_Flavor flavor, AOFF_RBTree_t* root,
ASSERT(((char*)x + AOFF_BLK_SZ(x)) <= ((char*)crr + CARRIER_SZ(crr)));
}
- if (flavor == AOFF_BF) {
+ if (order == FF_BF) {
AOFF_RBTree_t* y = x;
AOFF_RBTree_t* nxt = LIST_NEXT(y);
ASSERT(IS_TREE_NODE(x));
@@ -1225,13 +1304,13 @@ check_tree(Carrier_t* within_crr, enum AOFF_Flavor flavor, AOFF_RBTree_t* root,
if (x->left) {
ASSERT(x->left->parent == x);
- ASSERT(cmp_blocks(flavor, x->left, x) < 0);
+ ASSERT(cmp_blocks(order, x->left, x) < 0);
ASSERT(x->left->max_sz <= x->max_sz);
}
if (x->right) {
ASSERT(x->right->parent == x);
- ASSERT(cmp_blocks(flavor, x->right, x) > 0);
+ ASSERT(cmp_blocks(order, x->right, x) > 0);
ASSERT(x->right->max_sz <= x->max_sz);
}
ASSERT(x->max_sz >= AOFF_BLK_SZ(x));
@@ -1240,7 +1319,7 @@ check_tree(Carrier_t* within_crr, enum AOFF_Flavor flavor, AOFF_RBTree_t* root,
|| x->max_sz == (x->right ? x->right->max_sz : 0));
if (size && AOFF_BLK_SZ(x) >= size) {
- if (!res || cmp_blocks(flavor, x, res) < 0) {
+ if (!res || cmp_blocks(order, x, res) < 0) {
res = x;
}
}
diff --git a/erts/emulator/beam/erl_ao_firstfit_alloc.h b/erts/emulator/beam/erl_ao_firstfit_alloc.h
index 7349c6ab19..9cf4fc81a8 100644
--- a/erts/emulator/beam/erl_ao_firstfit_alloc.h
+++ b/erts/emulator/beam/erl_ao_firstfit_alloc.h
@@ -28,14 +28,16 @@
typedef struct AOFFAllctr_t_ AOFFAllctr_t;
-enum AOFF_Flavor {
- AOFF_AOFF = 0,
- AOFF_AOBF = 1,
- AOFF_BF = 2
+enum AOFFSortOrder {
+ FF_AGEFF = 0,
+ FF_AOFF = 1,
+ FF_AOBF = 2,
+ FF_BF = 3
};
typedef struct {
- enum AOFF_Flavor flavor;
+ enum AOFFSortOrder blk_order;
+ enum AOFFSortOrder crr_order;
} AOFFAllctrInit_t;
#define ERTS_DEFAULT_AOFF_ALLCTR_INIT {0/*dummy*/}
@@ -53,12 +55,12 @@ Allctr_t *erts_aoffalc_start(AOFFAllctr_t *, AOFFAllctrInit_t*, AllctrInit_t *);
#define GET_ERL_ALLOC_UTIL_IMPL
#include "erl_alloc_util.h"
-
struct AOFFAllctr_t_ {
Allctr_t allctr; /* Has to be first! */
struct AOFF_RBTree_t_* mbc_root;
- enum AOFF_Flavor flavor;
+ enum AOFFSortOrder blk_order;
+ enum AOFFSortOrder crr_order;
};
UWord erts_aoffalc_test(UWord, UWord, UWord);
diff --git a/erts/emulator/beam/erl_goodfit_alloc.c b/erts/emulator/beam/erl_goodfit_alloc.c
index 50aa41b4d2..a38f6c7daf 100644
--- a/erts/emulator/beam/erl_goodfit_alloc.c
+++ b/erts/emulator/beam/erl_goodfit_alloc.c
@@ -170,6 +170,7 @@ static void unlink_free_block (Allctr_t *, Block_t *);
static void update_last_aux_mbc (Allctr_t *, Carrier_t *);
static Eterm info_options (Allctr_t *, char *, fmtfn_t *,
void *, Uint **, Uint *);
+static int gfalc_try_set_dyn_param(Allctr_t*, Eterm param, Uint value);
static void init_atoms (void);
#ifdef ERTS_ALLOC_UTIL_HARD_DEBUG
@@ -250,6 +251,8 @@ erts_gfalc_start(GFAllctr_t *gfallctr,
if (!erts_alcu_start(allctr, init))
return NULL;
+ allctr->try_set_dyn_param = gfalc_try_set_dyn_param;
+
if (allctr->min_block_size != MIN_BLK_SZ)
return NULL;
@@ -584,6 +587,15 @@ info_options(Allctr_t *allctr,
return res;
}
+static int gfalc_try_set_dyn_param(Allctr_t* allctr, Eterm param, Uint value)
+{
+ if (param == am_sbct) {
+ /* Cannot change 'sbct' without rearranging buckets */
+ return 0;
+ }
+ return erts_alcu_try_set_dyn_param(allctr, param, value);
+}
+
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
* NOTE: erts_gfalc_test() is only supposed to be used for testing. *
* *
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-09 18:55:38 +0000