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authorBjörn-Egil Dahlberg <[email protected]>2015-09-15 17:36:22 +0200
committerBjörn-Egil Dahlberg <[email protected]>2015-11-17 14:45:48 +0100
commit95b25f7a3a33c43912079af713bf1f386a764071 (patch)
treea5d777b82354c0fb03f11ee684d145d420fd5b64 /erts/emulator
parent2ab76f7f1fe6ec4c94541ba5a2f0cd9dc1b9c79a (diff)
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Fix Map preserved sharing copy implementation
The Map implementation has changed since initial preserved copy implementation.
Diffstat (limited to 'erts/emulator')
-rw-r--r--erts/emulator/beam/copy.c135
1 files changed, 85 insertions, 50 deletions
diff --git a/erts/emulator/beam/copy.c b/erts/emulator/beam/copy.c
index 42b4bee29d..c7806ed8ff 100644
--- a/erts/emulator/beam/copy.c
+++ b/erts/emulator/beam/copy.c
@@ -420,19 +420,28 @@ Uint size_shared(Eterm obj)
}
goto pop_next;
}
- case MAP_SUBTAG: {
- map_t *mp = (map_t *) ptr;
- Uint n = map_get_size(mp) + 1;
- sum += n + 2;
- ptr += 2; /* hdr + size words */
- while (n-- > 0) {
- obj = *ptr++;
- if (!IS_CONST(obj)) {
- EQUEUE_PUT(s, obj);
+ case MAP_SUBTAG:
+ switch (MAP_HEADER_TYPE(hdr)) {
+ case MAP_HEADER_TAG_FLATMAP_HEAD : {
+ flatmap_t *mp = (flatmap_t*)flatmap_val(obj);
+ Uint n = flatmap_get_size(mp) + 1;
+ ptr = (Eterm *)mp;
+ sum += n + 2;
+ ptr += 2; /* hdr + size words */
+ while (n--) {
+ obj = *ptr++;
+ if (!IS_CONST(obj)) {
+ EQUEUE_PUT(s, obj);
+ }
+ }
+ goto pop_next;
}
+ case MAP_HEADER_TAG_HAMT_HEAD_BITMAP :
+ case MAP_HEADER_TAG_HAMT_HEAD_ARRAY :
+ case MAP_HEADER_TAG_HAMT_NODE_BITMAP :
+ default:
+ erl_exit(ERTS_ABORT_EXIT, "size_shared: bad hashmap type %d\n", MAP_HEADER_TYPE(hdr));
}
- goto pop_next;
- }
case BIN_MATCHSTATE_SUBTAG:
erl_exit(ERTS_ABORT_EXIT,
"size_shared: matchstate term not allowed");
@@ -533,10 +542,10 @@ cleanup:
goto cleanup_next;
}
case MAP_SUBTAG: {
- map_t *mp = (map_t *) ptr;
- Uint n = map_get_size(mp) + 1;
+ flatmap_t *mp = (flatmap_t *) ptr;
+ Uint n = flatmap_get_size(mp) + 1;
ptr += 2; /* hdr + size words */
- while (n-- > 0) {
+ while (n--) {
obj = *ptr++;
if (!IS_CONST(obj)) {
EQUEUE_PUT_UNCHECKED(s, obj);
@@ -1186,20 +1195,28 @@ Uint copy_shared_calculate(Eterm obj, shcopy_info *info, unsigned flags)
}
goto pop_next;
}
- case MAP_SUBTAG: {
- map_t *mp = (map_t *) ptr;
- Uint n = map_get_size(mp) + 1;
- sum += n + 2;
- ptr += 2; /* hdr + size words */
- while (n-- > 0) {
- obj = *ptr++;
- if (!IS_CONST(obj)) {
- EQUEUE_PUT(s, obj);
+ case MAP_SUBTAG:
+ switch (MAP_HEADER_TYPE(hdr)) {
+ case MAP_HEADER_TAG_FLATMAP_HEAD : {
+ flatmap_t *mp = (flatmap_t *) ptr;
+ Uint n = flatmap_get_size(mp) + 1;
+ sum += n + 2;
+ ptr += 2; /* hdr + size words */
+ while (n--) {
+ obj = *ptr++;
+ if (!IS_CONST(obj)) {
+ EQUEUE_PUT(s, obj);
+ }
+ }
+ goto pop_next;
}
+ case MAP_HEADER_TAG_HAMT_HEAD_BITMAP :
+ case MAP_HEADER_TAG_HAMT_HEAD_ARRAY :
+ case MAP_HEADER_TAG_HAMT_NODE_BITMAP :
+ default:
+ erl_exit(ERTS_ABORT_EXIT, "copy_shared_calculate: bad hashmap type %d\n", MAP_HEADER_TYPE(hdr));
}
- goto pop_next;
- }
- case BIN_MATCHSTATE_SUBTAG:
+ case BIN_MATCHSTATE_SUBTAG:
erl_exit(ERTS_ABORT_EXIT,
"size_shared: matchstate term not allowed");
default:
@@ -1234,7 +1251,6 @@ Uint copy_shared_calculate(Eterm obj, shcopy_info *info, unsigned flags)
}
}
-
/*
* Copy object "obj" preserving sharing.
* Second half: copy and restore the object.
@@ -1440,23 +1456,31 @@ Uint copy_shared_perform(Eterm obj, Uint size, shcopy_info *info, Eterm** hpp, E
erts_refc_inc(&funp->fe->refc, 2);
goto cleanup_next;
}
- case MAP_SUBTAG: {
- map_t *mp = (map_t *) ptr;
- Uint n = map_get_size(mp) + 1;
- *resp = make_map(hp);
- *hp++ = hdr;
- *hp++ = *++ptr;
- while (n-- > 0) {
- obj = *++ptr;
- if (IS_CONST(obj)) {
- *hp++ = obj;
- } else {
- EQUEUE_PUT_UNCHECKED(s, obj);
- *hp++ = HEAP_ELEM_TO_BE_FILLED;
- }
- }
- goto cleanup_next;
- }
+ case MAP_SUBTAG:
+ switch (MAP_HEADER_TYPE(hdr)) {
+ case MAP_HEADER_TAG_FLATMAP_HEAD : {
+ flatmap_t *mp = (flatmap_t *) ptr;
+ Uint n = flatmap_get_size(mp) + 1;
+ *resp = make_flatmap(hp);
+ *hp++ = hdr;
+ *hp++ = *++ptr;
+ while (n--) {
+ obj = *++ptr;
+ if (IS_CONST(obj)) {
+ *hp++ = obj;
+ } else {
+ EQUEUE_PUT_UNCHECKED(s, obj);
+ *hp++ = HEAP_ELEM_TO_BE_FILLED;
+ }
+ }
+ goto cleanup_next;
+ }
+ case MAP_HEADER_TAG_HAMT_HEAD_BITMAP :
+ case MAP_HEADER_TAG_HAMT_HEAD_ARRAY :
+ case MAP_HEADER_TAG_HAMT_NODE_BITMAP :
+ default:
+ erl_exit(ERTS_ABORT_EXIT, "copy_shared_perform: bad hashmap type %d\n", MAP_HEADER_TYPE(hdr));
+ }
case REFC_BINARY_SUBTAG: {
ProcBin* pb = (ProcBin *) ptr;
sz = thing_arityval(hdr);
@@ -1592,12 +1616,23 @@ Uint copy_shared_perform(Eterm obj, Uint size, shcopy_info *info, Eterm** hpp, E
remaining = 1 + funp->num_free;
break;
}
- case MAP_SUBTAG: {
- map_t *mp = (map_t *) hscan;
- remaining = map_get_size(mp) + 1;
- hscan += 2;
- break;
- }
+ case MAP_SUBTAG:
+ switch (MAP_HEADER_TYPE(*hscan)) {
+ case MAP_HEADER_TAG_FLATMAP_HEAD : {
+ flatmap_t *mp = (flatmap_t *) hscan;
+ remaining = flatmap_get_size(mp) + 1;
+ hscan += 2;
+ break;
+ }
+ case MAP_HEADER_TAG_HAMT_HEAD_BITMAP :
+ case MAP_HEADER_TAG_HAMT_HEAD_ARRAY :
+ case MAP_HEADER_TAG_HAMT_NODE_BITMAP :
+ default:
+ erl_exit(ERTS_ABORT_EXIT,
+ "copy_shared_perform: bad hashmap type %d\n",
+ MAP_HEADER_TYPE(*hscan));
+ }
+ break;
case SUB_BINARY_SUBTAG:
ASSERT(((ErlSubBin *) hscan)->bitoffs +
((ErlSubBin *) hscan)->bitsize > 0);