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-rw-r--r--erts/emulator/beam/erl_map.c247
1 files changed, 247 insertions, 0 deletions
diff --git a/erts/emulator/beam/erl_map.c b/erts/emulator/beam/erl_map.c
index 304b5470f5..f99a1b431b 100644
--- a/erts/emulator/beam/erl_map.c
+++ b/erts/emulator/beam/erl_map.c
@@ -64,6 +64,7 @@
*/
static const Eterm *hashmap_get(Uint32 hx, Eterm key, Eterm node);
+static Eterm hashmap_insert(Process *p, Uint32 hx, Eterm key, Eterm value, Eterm node, int is_update);
static Eterm hashmap_to_list(Process *p, Eterm map);
static Eterm hashmap_keys(Process *p, Eterm map);
static Eterm hashmap_values(Process *p, Eterm map);
@@ -594,6 +595,13 @@ Eterm erts_maps_put(Process *p, Eterm key, Eterm value, Eterm map) {
BIF_RETTYPE maps_put_3(BIF_ALIST_3) {
if (is_map(BIF_ARG_3)) {
BIF_RET(erts_maps_put(BIF_P, BIF_ARG_1, BIF_ARG_2, BIF_ARG_3));
+ } else if (is_hashmap(BIF_ARG_3)) {
+ Uint32 hx = hashmap_make_hash(BIF_ARG_1);
+ Eterm map;
+
+ map = hashmap_insert(BIF_P, hx, BIF_ARG_1, BIF_ARG_2, BIF_ARG_3, 0);
+ ASSERT(is_hashmap(map));
+ BIF_RET(map);
}
BIF_ERROR(BIF_P, BADARG);
}
@@ -748,6 +756,13 @@ BIF_RETTYPE maps_update_3(BIF_ALIST_3) {
if (erts_maps_update(BIF_P, BIF_ARG_1, BIF_ARG_2, BIF_ARG_3, &res)) {
BIF_RET(res);
}
+ } else if (is_hashmap(BIF_ARG_3)) {
+ Uint32 hx = hashmap_make_hash(BIF_ARG_1);
+ Eterm map;
+
+ map = hashmap_insert(BIF_P, hx, BIF_ARG_1, BIF_ARG_2, BIF_ARG_3, 1);
+ if (is_value(map))
+ BIF_RET(map);
}
BIF_ERROR(BIF_P, BADARG);
}
@@ -920,6 +935,238 @@ static const Eterm *hashmap_get(Uint32 hx, Eterm key, Eterm node) {
return NULL;
}
+static Eterm hashmap_insert(Process *p, Uint32 hx, Eterm key, Eterm value,
+ Eterm node, int is_update) {
+ Eterm *hp = NULL, *nhp = NULL;
+ Eterm *ptr;
+ Eterm hdr,res,ckey,fake;
+ Eterm th[2];
+ Uint32 ix, cix, bp, hval, chx;
+ Uint slot, lvl = 0, clvl;
+ Uint size = 0, n = 0, update_size = 1;
+ DECLARE_ESTACK(stack);
+
+ for (;;) {
+ switch(primary_tag(node)) {
+ case TAG_PRIMARY_LIST: /* LEAF NODE [K|V] */
+ ptr = list_val(node);
+ ckey = CAR(ptr);
+ if (EQ(ckey, key)) {
+ update_size = 0;
+ goto unroll;
+ }
+ if (is_update) {
+ res = THE_NON_VALUE;
+ goto bail_out;
+ }
+ goto insert_subnodes;
+ case TAG_PRIMARY_BOXED:
+ ptr = boxed_val(node);
+ hdr = *ptr;
+ ASSERT(is_header(hdr));
+
+ switch(hdr & _HEADER_MAP_SUBTAG_MASK) {
+ case HAMT_SUBTAG_NODE_ARRAY:
+ ix = hashmap_index(hx);
+ hx = hashmap_shift_hash(th,hx,lvl,key);
+ size += HAMT_NODE_ARRAY_SZ;
+ ESTACK_PUSH2(stack, ix, node);
+ node = ptr[ix+1];
+ break;
+ case HAMT_SUBTAG_HEAD_ARRAY:
+ ix = hashmap_index(hx);
+ hx = hashmap_shift_hash(th,hx,lvl,key);
+ size += HAMT_HEAD_ARRAY_SZ;
+ ESTACK_PUSH2(stack, ix, node);
+ node = ptr[ix+2];
+ break;
+ case HAMT_SUBTAG_NODE_BITMAP:
+ hval = MAP_HEADER_VAL(hdr);
+ ix = hashmap_index(hx);
+ bp = 1 << ix;
+ slot = hashmap_bitcount(hval & (bp - 1));
+ n = hashmap_bitcount(hval);
+
+ ESTACK_PUSH(stack, n);
+ ESTACK_PUSH3(stack, bp, slot, node);
+
+ /* occupied */
+ if (bp & hval) {
+ hx = hashmap_shift_hash(th,hx,lvl,key);
+ node = ptr[slot+1];
+ ASSERT(HAMT_NODE_BITMAP_SZ(n) <= 17);
+ size += HAMT_NODE_BITMAP_SZ(n);
+ break;
+ }
+ /* not occupied */
+ if (is_update) {
+ res = THE_NON_VALUE;
+ goto bail_out;
+ }
+ size += HAMT_NODE_BITMAP_SZ(n+1);
+ goto unroll;
+ case HAMT_SUBTAG_HEAD_BITMAP:
+ hval = MAP_HEADER_VAL(hdr);
+ ix = hashmap_index(hx);
+ bp = 1 << ix;
+ slot = hashmap_bitcount(hval & (bp - 1));
+ n = hashmap_bitcount(hval);
+
+ ESTACK_PUSH(stack, n);
+ ESTACK_PUSH3(stack, bp, slot, node);
+
+ /* occupied */
+ if (bp & hval) {
+ hx = hashmap_shift_hash(th,hx,lvl,key);
+ node = ptr[slot+2];
+ ASSERT(HAMT_HEAD_BITMAP_SZ(n) <= 18);
+ size += HAMT_HEAD_BITMAP_SZ(n);
+ break;
+ }
+ /* not occupied */
+ if (is_update) {
+ res = THE_NON_VALUE;
+ goto bail_out;
+ }
+ size += HAMT_HEAD_BITMAP_SZ(n+1);
+ goto unroll;
+ default:
+ erl_exit(1, "bad header tag %ld\r\n", hdr & _HEADER_MAP_SUBTAG_MASK);
+ break;
+ }
+ break;
+ default:
+ erl_exit(1, "bad primary tag %p\r\n", node);
+ break;
+ }
+ }
+insert_subnodes:
+ clvl = lvl;
+ chx = hashmap_restore_hash(th,clvl,ckey);
+ size += HAMT_NODE_BITMAP_SZ(2);
+ ix = hashmap_index(hx);
+ cix = hashmap_index(chx);
+
+ while (cix == ix) {
+ ESTACK_PUSH(stack, 0);
+ ESTACK_PUSH3(stack, 1 << ix, 0, MAP_HEADER_HAMT_NODE_BITMAP(0));
+ size += HAMT_NODE_BITMAP_SZ(1);
+ hx = hashmap_shift_hash(th,hx,lvl,key);
+ chx = hashmap_shift_hash(th,chx,clvl,ckey);
+ ix = hashmap_index(hx);
+ cix = hashmap_index(chx);
+ }
+ ESTACK_PUSH3(stack, cix, ix, node);
+
+unroll:
+ size += 2;
+ hp = HAlloc(p, size);
+ res = CONS(hp, key, value); hp += 2;
+
+ do {
+ node = ESTACK_POP(stack);
+ switch(primary_tag(node)) {
+ case TAG_PRIMARY_LIST:
+ ix = (Uint32) ESTACK_POP(stack);
+ cix = (Uint32) ESTACK_POP(stack);
+
+ nhp = hp;
+ *hp++ = MAP_HEADER_HAMT_NODE_BITMAP((1 << ix) | (1 << cix));
+ if (ix < cix) {
+ *hp++ = res;
+ *hp++ = node;
+ } else {
+ *hp++ = node;
+ *hp++ = res;
+ }
+ res = make_hashmap(nhp);
+ break;
+ case TAG_PRIMARY_HEADER:
+ /* subnodes, fake it */
+ fake = node;
+ node = make_boxed(&fake);
+ case TAG_PRIMARY_BOXED:
+ ptr = boxed_val(node);
+ hdr = *ptr;
+ ASSERT(is_header(hdr));
+
+ switch(hdr & _HEADER_MAP_SUBTAG_MASK) {
+ case HAMT_SUBTAG_NODE_ARRAY:
+ slot = (Uint) ESTACK_POP(stack);
+ nhp = hp;
+ n = HAMT_NODE_ARRAY_SZ;
+ while(n--) { *hp++ = *ptr++; }
+ nhp[slot+1] = res;
+ res = make_hashmap(nhp);
+ break;
+ case HAMT_SUBTAG_HEAD_ARRAY:
+ slot = (Uint) ESTACK_POP(stack);
+ nhp = hp;
+ n = HAMT_HEAD_ARRAY_SZ - 2;
+ *hp++ = MAP_HEADER_HAMT_HEAD_ARRAY; ptr++;
+ *hp++ = (*ptr++) + update_size;
+ while(n--) { *hp++ = *ptr++; }
+ nhp[slot+2] = res;
+ res = make_hashmap(nhp);
+ break;
+ case HAMT_SUBTAG_NODE_BITMAP:
+ slot = (Uint) ESTACK_POP(stack);
+ bp = (Uint32) ESTACK_POP(stack);
+ n = (Uint32) ESTACK_POP(stack);
+ hval = MAP_HEADER_VAL(hdr);
+ nhp = hp;
+ *hp++ = MAP_HEADER_HAMT_NODE_BITMAP(hval | bp); ptr++;
+
+ n -= slot;
+ while(slot--) { *hp++ = *ptr++; }
+ *hp++ = res;
+ if (hval & bp) { ptr++; n--; }
+ while(n--) { *hp++ = *ptr++; }
+
+ if ((hval | bp) == 0xffff) {
+ *nhp = make_arityval(16);
+ }
+ res = make_hashmap(nhp);
+ break;
+ case HAMT_SUBTAG_HEAD_BITMAP:
+ slot = (Uint) ESTACK_POP(stack);
+ bp = (Uint32) ESTACK_POP(stack);
+ n = (Uint32) ESTACK_POP(stack);
+ hval = MAP_HEADER_VAL(hdr);
+ nhp = hp;
+ *hp++ = MAP_HEADER_HAMT_HEAD_BITMAP(hval | bp); ptr++;
+ *hp++ = (*ptr++) + update_size;
+
+ n -= slot;
+ while(slot--) { *hp++ = *ptr++; }
+ *hp++ = res;
+ if (hval & bp) { ptr++; n--; }
+ while(n--) { *hp++ = *ptr++; }
+
+ if ((hval | bp) == 0xffff) {
+ *nhp = MAP_HEADER_HAMT_HEAD_ARRAY;
+ }
+ res = make_hashmap(nhp);
+ break;
+ default:
+ erl_exit(1, "bad header tag %x\r\n", hdr & _HEADER_MAP_SUBTAG_MASK);
+ break;
+ }
+ break;
+ default:
+ erl_exit(1, "bad primary tag %x\r\n", primary_tag(node));
+ break;
+ }
+
+ } while(!ESTACK_ISEMPTY(stack));
+
+bail_out:
+ DESTROY_ESTACK(stack);
+ ERTS_VERIFY_UNUSED_TEMP_ALLOC(p);
+ ERTS_HOLE_CHECK(p);
+ return res;
+}
+
static Eterm hashmap_keys(Process* p, Eterm node) {
DECLARE_WSTACK(stack);
hashmap_head_t* root;
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