diff options
Diffstat (limited to 'erts/emulator/beam/utils.c')
| -rw-r--r-- | erts/emulator/beam/utils.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/erts/emulator/beam/utils.c b/erts/emulator/beam/utils.c index f79cb8db7d..0f2d89bbfe 100644 --- a/erts/emulator/beam/utils.c +++ b/erts/emulator/beam/utils.c @@ -1288,6 +1288,55 @@ make_hash2(Eterm term) goto hash2_common; } break; + case HASHMAP_SUBTAG: + { + Eterm* ptr = boxed_val(term) + 1; + Uint size; + int i; + switch (hdr & _HEADER_MAP_SUBTAG_MASK) { + case HAMT_SUBTAG_HEAD_ARRAY: + case HAMT_SUBTAG_HEAD_BITMAP: + size = *ptr++; + UINT32_HASH(size, HCONST_16); + if (size == 0) + goto hash2_common; + ESTACK_PUSH(s, hash_xor_values); + ESTACK_PUSH(s, hash_xor_keys); + ESTACK_PUSH(s, hash); + ESTACK_PUSH(s, HASH_MAP_TAIL); + hash = 0; + hash_xor_keys = 0; + hash_xor_values = 0; + } + switch (hdr & _HEADER_MAP_SUBTAG_MASK) { + case HAMT_SUBTAG_HEAD_ARRAY: + case HAMT_SUBTAG_NODE_ARRAY: + i = 16; + break; + case HAMT_SUBTAG_HEAD_BITMAP: + case HAMT_SUBTAG_NODE_BITMAP: + i = hashmap_bitcount(MAP_HEADER_VAL(hdr)); + break; + default: + erl_exit(1, "bad header"); + } + while (i) { + if (is_list(*ptr)) { + Eterm* cons = list_val(*ptr); + ESTACK_PUSH(s, HASH_MAP_KEY); + ESTACK_PUSH(s, CAR(cons)); + ESTACK_PUSH(s, HASH_MAP_VAL); + ESTACK_PUSH(s, CDR(cons)); + } + else { + ASSERT(is_boxed(*ptr)); + ESTACK_PUSH(s, *ptr); + } + i--; ptr++; + } + goto hash2_common; + } + break; case EXPORT_SUBTAG: { Export* ep = *((Export **) (export_val(term) + 1)); |