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-rw-r--r--erts/emulator/beam/dist.c10
-rw-r--r--erts/emulator/beam/erl_map.h13
-rw-r--r--erts/emulator/beam/erl_message.c38
-rw-r--r--erts/emulator/beam/erl_message.h4
-rw-r--r--erts/emulator/test/map_SUITE.erl61
5 files changed, 88 insertions, 38 deletions
diff --git a/erts/emulator/beam/dist.c b/erts/emulator/beam/dist.c
index d5443476ec..bab80654d5 100644
--- a/erts/emulator/beam/dist.c
+++ b/erts/emulator/beam/dist.c
@@ -1136,7 +1136,6 @@ int erts_net_message(Port *prt,
Process* rp;
DeclareTmpHeapNoproc(ctl_default,DIST_CTL_DEFAULT_SIZE);
Eterm* ctl = ctl_default;
- ErlOffHeap off_heap;
ErtsHeapFactory factory;
Eterm* hp;
Sint type;
@@ -1151,9 +1150,6 @@ int erts_net_message(Port *prt,
#endif
UseTmpHeapNoproc(DIST_CTL_DEFAULT_SIZE);
- /* Thanks to Luke Gorrie */
- off_heap.first = NULL;
- off_heap.overhead = 0;
ERTS_SMP_CHK_NO_PROC_LOCKS;
@@ -1214,7 +1210,7 @@ int erts_net_message(Port *prt,
}
hp = ctl;
- erts_factory_static_init(&factory, ctl, ctl_len, &off_heap);
+ erts_factory_tmp_init(&factory, ctl, ctl_len, ERTS_ALC_T_DCTRL_BUF);
arg = erts_decode_dist_ext(&factory, &ede);
if (is_non_value(arg)) {
#ifdef ERTS_DIST_MSG_DBG
@@ -1702,7 +1698,7 @@ int erts_net_message(Port *prt,
goto invalid_message;
}
- erts_cleanup_offheap(&off_heap);
+ erts_factory_close(&factory);
if (ctl != ctl_default) {
erts_free(ERTS_ALC_T_DCTRL_BUF, (void *) ctl);
}
@@ -1717,7 +1713,7 @@ int erts_net_message(Port *prt,
}
data_error:
PURIFY_MSG("data error");
- erts_cleanup_offheap(&off_heap);
+ erts_factory_close(&factory);
if (ctl != ctl_default) {
erts_free(ERTS_ALC_T_DCTRL_BUF, (void *) ctl);
}
diff --git a/erts/emulator/beam/erl_map.h b/erts/emulator/beam/erl_map.h
index be6f791a4e..052fa99f03 100644
--- a/erts/emulator/beam/erl_map.h
+++ b/erts/emulator/beam/erl_map.h
@@ -180,14 +180,17 @@ typedef struct hashmap_head_s {
[one cons cell + one list term in parent node] per key
[one header + one boxed term in parent node] per inner node
[one header + one size word] for root node
+ Observed average number of nodes per key is about 0.35.
*/
-#define HASHMAP_HEAP_SIZE(KEYS,NODES) ((KEYS)*3 + (NODES)*2)
+#define HASHMAP_WORDS_PER_KEY 3
+#define HASHMAP_WORDS_PER_NODE 2
#ifdef DEBUG
-# define HASHMAP_ESTIMATED_NODE_COUNT(KEYS) (KEYS)
+# define HASHMAP_ESTIMATED_TOT_NODE_SIZE(KEYS) \
+ (HASHMAP_WORDS_PER_NODE * (KEYS) * 3/10) /* slightly under estimated */
#else
-# define HASHMAP_ESTIMATED_NODE_COUNT(KEYS) (2*(KEYS)/5)
+# define HASHMAP_ESTIMATED_TOT_NODE_SIZE(KEYS) \
+ (HASHMAP_WORDS_PER_NODE * (KEYS) * 4/10) /* slightly over estimated */
#endif
#define HASHMAP_ESTIMATED_HEAP_SIZE(KEYS) \
- HASHMAP_HEAP_SIZE(KEYS,HASHMAP_ESTIMATED_NODE_COUNT(KEYS))
-
+ ((KEYS)*HASHMAP_WORDS_PER_KEY + HASHMAP_ESTIMATED_TOT_NODE_SIZE(KEYS))
#endif
diff --git a/erts/emulator/beam/erl_message.c b/erts/emulator/beam/erl_message.c
index 766e0bf52a..ac5ec79fe4 100644
--- a/erts/emulator/beam/erl_message.c
+++ b/erts/emulator/beam/erl_message.c
@@ -1577,6 +1577,9 @@ void erts_factory_selfcontained_message_init(ErtsHeapFactory* factory,
ASSERT(factory->hp >= factory->hp_start && factory->hp <= factory->hp_end);
}
+/* One static sized heap that must suffice.
+ No extra heap fragments will be allocated.
+*/
void erts_factory_static_init(ErtsHeapFactory* factory,
Eterm* hp,
Uint size,
@@ -1591,6 +1594,23 @@ void erts_factory_static_init(ErtsHeapFactory* factory,
factory->off_heap_saved.overhead = factory->off_heap->overhead;
}
+/* A temporary heap with default buffer allocated/freed by client.
+ * factory_close is same as factory_undo
+ */
+void erts_factory_tmp_init(ErtsHeapFactory* factory, Eterm* hp, Uint size,
+ Uint32 atype)
+{
+ factory->mode = FACTORY_TMP;
+ factory->hp_start = hp;
+ factory->hp = hp;
+ factory->hp_end = hp + size;
+ factory->heap_frags = NULL;
+ factory->off_heap_saved.first = NULL;
+ factory->off_heap_saved.overhead = 0;
+ factory->off_heap = &factory->off_heap_saved;
+ factory->alloc_type = atype;
+}
+
/* When we know the term is an immediate and need no heap.
*/
void erts_factory_dummy_init(ErtsHeapFactory* factory)
@@ -1641,6 +1661,7 @@ static void reserve_heap(ErtsHeapFactory* factory, Uint need, Uint xtra)
else {
/* Fall through */
case FACTORY_HEAP_FRAGS:
+ case FACTORY_TMP:
bp = factory->heap_frags;
}
@@ -1706,6 +1727,9 @@ void erts_factory_close(ErtsHeapFactory* factory)
bp->used_size = factory->hp - bp->mem;
}
break;
+ case FACTORY_TMP:
+ erts_factory_undo(factory);
+ break;
case FACTORY_STATIC: break;
case FACTORY_CLOSED: break;
default:
@@ -1832,8 +1856,20 @@ void erts_factory_undo(ErtsHeapFactory* factory)
factory->message->data.heap_frag = factory->heap_frags;
erts_cleanup_messages(factory->message);
break;
+ case FACTORY_TMP:
case FACTORY_HEAP_FRAGS:
- free_message_buffer(factory->heap_frags);
+ erts_cleanup_offheap(factory->off_heap);
+ factory->off_heap->first = NULL;
+
+ bp = factory->heap_frags;
+ while (bp != NULL) {
+ ErlHeapFragment* next_bp = bp->next;
+
+ ASSERT(bp->off_heap.first == NULL);
+ ERTS_HEAP_FREE(factory->alloc_type, (void *) bp,
+ ERTS_HEAP_FRAG_SIZE(bp->alloc_size));
+ bp = next_bp;
+ }
break;
case FACTORY_CLOSED: break;
diff --git a/erts/emulator/beam/erl_message.h b/erts/emulator/beam/erl_message.h
index fa9bb2ecde..60035d15ae 100644
--- a/erts/emulator/beam/erl_message.h
+++ b/erts/emulator/beam/erl_message.h
@@ -58,7 +58,8 @@ typedef struct {
FACTORY_HALLOC,
FACTORY_MESSAGE,
FACTORY_HEAP_FRAGS,
- FACTORY_STATIC
+ FACTORY_STATIC,
+ FACTORY_TMP
} mode;
Process* p;
Eterm* hp_start;
@@ -80,6 +81,7 @@ ErtsMessage *erts_factory_message_create(ErtsHeapFactory *, Process *,
ErtsProcLocks *, Uint sz);
void erts_factory_selfcontained_message_init(ErtsHeapFactory*, ErtsMessage *, Eterm *);
void erts_factory_static_init(ErtsHeapFactory*, Eterm* hp, Uint size, ErlOffHeap*);
+void erts_factory_tmp_init(ErtsHeapFactory*, Eterm* hp, Uint size, Uint32 atype);
void erts_factory_dummy_init(ErtsHeapFactory*);
Eterm* erts_produce_heap(ErtsHeapFactory*, Uint need, Uint xtra);
diff --git a/erts/emulator/test/map_SUITE.erl b/erts/emulator/test/map_SUITE.erl
index bde0d408f3..1d0dc9e9ae 100644
--- a/erts/emulator/test/map_SUITE.erl
+++ b/erts/emulator/test/map_SUITE.erl
@@ -2999,21 +2999,38 @@ id(I) -> I.
t_gc_rare_map_overflow(Config) ->
Pa = filename:dirname(code:which(?MODULE)),
{ok, Node} = test_server:start_node(gc_rare_map_overflow, slave, [{args, "-pa \""++Pa++"\""}]),
- Echo = spawn_link(Node, fun Loop() -> receive {From,Msg} -> From ! Msg
- end,
- Loop()
- end),
- FatMap = fatmap(34),
- false = (flatmap =:= erts_internal:term_type(FatMap)),
-
- t_gc_rare_map_overflow_do(Echo, FatMap, fun() -> erlang:garbage_collect() end),
-
- % Repeat test for minor gc:
- minor_collect(), % need this to make the next gc really be a minor
- t_gc_rare_map_overflow_do(Echo, FatMap, fun() -> true = minor_collect() end),
-
- unlink(Echo),
- test_server:stop_node(Node).
+ erts_debug:set_internal_state(available_internal_state, true),
+ try
+ Echo = spawn_link(Node, fun Loop() -> receive {From,Msg} -> From ! Msg
+ end,
+ Loop()
+ end),
+ FatMap = fatmap(34),
+ false = (flatmap =:= erts_internal:term_type(FatMap)),
+
+ t_gc_rare_map_overflow_do(Echo, FatMap, fun() -> erlang:garbage_collect() end),
+
+ %% Repeat test for minor gc:
+ t_gc_rare_map_overflow_do(Echo, FatMap, fun() -> minor_collect() end),
+
+ unlink(Echo),
+
+ %% Test fatmap in exit signal
+ Exiter = spawn_link(Node, fun Loop() -> receive {From,Msg} ->
+ "not_a_map" = Msg % badmatch!
+ end,
+ Loop()
+ end),
+ process_flag(trap_exit, true),
+ Exiter ! {self(), FatMap},
+ {'EXIT', Exiter, {{badmatch,FatMap}, _}} = receive M -> M end,
+ ok
+
+ after
+ process_flag(trap_exit, false),
+ erts_debug:set_internal_state(available_internal_state, false),
+ test_server:stop_node(Node)
+ end.
t_gc_rare_map_overflow_do(Echo, FatMap, GcFun) ->
Master = self(),
@@ -3033,15 +3050,11 @@ t_gc_rare_map_overflow_do(Echo, FatMap, GcFun) ->
ok.
minor_collect() ->
- minor_collect(minor_gcs()).
-
-minor_collect(Before) ->
+ Before = minor_gcs(),
+ erts_debug:set_internal_state(force_gc, self()),
+ erlang:yield(),
After = minor_gcs(),
- case After of
- _ when After > Before -> true;
- _ when After =:= Before -> minor_collect(Before);
- 0 -> false
- end.
+ io:format("minor_gcs: ~p -> ~p\n", [Before, After]).
minor_gcs() ->
{garbage_collection, Info} = process_info(self(), garbage_collection),
@@ -3051,7 +3064,7 @@ minor_gcs() ->
%% Generate a map with N (or N+1) keys that has an abnormal heap demand.
%% Done by finding keys that collide in the first 32-bit hash.
fatmap(N) ->
- erts_debug:set_internal_state(available_internal_state, true),
+ %%erts_debug:set_internal_state(available_internal_state, true),
Table = ets:new(void, [bag, private]),
Seed0 = rand:seed_s(exsplus, {4711, 3141592, 2718281}),
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-15 03:30:37 +0000