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-rw-r--r--erts/emulator/beam/beam_emu.c464
1 files changed, 463 insertions, 1 deletions
diff --git a/erts/emulator/beam/beam_emu.c b/erts/emulator/beam/beam_emu.c
index 7fecdd5c5f..89d9442526 100644
--- a/erts/emulator/beam/beam_emu.c
+++ b/erts/emulator/beam/beam_emu.c
@@ -31,6 +31,7 @@
#include "big.h"
#include "beam_load.h"
#include "erl_binary.h"
+#include "erl_map.h"
#include "erl_bits.h"
#include "dist.h"
#include "beam_bp.h"
@@ -701,6 +702,19 @@ extern int count_instructions;
Fail; \
}
+#define IsMap(Src, Fail) if (is_not_map(Src)) { Fail; }
+
+#define HasMapField(Src, Key, Fail) if (has_not_map_field(Src, Key)) { Fail; }
+
+#define GetMapElement(Src, Key, Dst, Fail) \
+ do { \
+ Eterm _res = get_map_element(Src, Key); \
+ if (is_non_value(_res)) { \
+ Fail; \
+ } \
+ Dst = _res; \
+ } while (0)
+
#define IsFunction(X, Action) \
do { \
if ( !(is_any_fun(X)) ) { \
@@ -944,7 +958,13 @@ static BeamInstr* apply_fun(Process* p, Eterm fun,
Eterm args, Eterm* reg) NOINLINE;
static Eterm new_fun(Process* p, Eterm* reg,
ErlFunEntry* fe, int num_free) NOINLINE;
-
+static Eterm new_map(Process* p, Eterm* reg, BeamInstr* I) NOINLINE;
+static Eterm update_map_assoc(Process* p, Eterm* reg,
+ Eterm map, BeamInstr* I) NOINLINE;
+static Eterm update_map_exact(Process* p, Eterm* reg,
+ Eterm map, BeamInstr* I) NOINLINE;
+static int has_not_map_field(Eterm map, Eterm key);
+static Eterm get_map_element(Eterm map, Eterm key);
/*
* Functions not directly called by process_main(). OK to inline.
@@ -2323,6 +2343,55 @@ void process_main(void)
Goto(*I);
}
+ OpCase(new_map_jdII): {
+ Eterm res;
+
+ x(0) = r(0);
+ SWAPOUT;
+ res = new_map(c_p, reg, I);
+ SWAPIN;
+ r(0) = x(0);
+ StoreResult(res, Arg(1));
+ Next(4+Arg(3));
+ }
+
+ OpCase(update_map_assoc_jddII): {
+ Eterm res;
+ Eterm map;
+
+ GetArg1(1, map);
+ x(0) = r(0);
+ SWAPOUT;
+ res = update_map_assoc(c_p, reg, map, I);
+ SWAPIN;
+ if (is_value(res)) {
+ r(0) = x(0);
+ StoreResult(res, Arg(2));
+ Next(5+Arg(4));
+ } else {
+ goto badarg;
+ }
+ }
+
+ OpCase(update_map_exact_jddII): {
+ Eterm res;
+ Eterm map;
+
+ GetArg1(1, map);
+ x(0) = r(0);
+ SWAPOUT;
+ res = update_map_exact(c_p, reg, map, I);
+ SWAPIN;
+ if (is_value(res)) {
+ r(0) = x(0);
+ StoreResult(res, Arg(2));
+ Next(5+Arg(4));
+ } else {
+ goto badarg;
+ }
+ }
+
+
/*
* All guards with zero arguments have special instructions:
* self/0
@@ -5031,6 +5100,8 @@ translate_gc_bif(void* gcf)
return bit_size_1;
} else if (gcf == erts_gc_byte_size_1) {
return byte_size_1;
+ } else if (gcf == erts_gc_map_size_1) {
+ return map_size_1;
} else if (gcf == erts_gc_abs_1) {
return abs_1;
} else if (gcf == erts_gc_float_1) {
@@ -6227,6 +6298,397 @@ new_fun(Process* p, Eterm* reg, ErlFunEntry* fe, int num_free)
return make_fun(funp);
}
+static int has_not_map_field(Eterm map, Eterm key)
+{
+ map_t* mp;
+ Eterm* keys;
+ Uint i;
+ Uint n;
+
+ mp = (map_t *)map_val(map);
+ keys = map_get_keys(mp);
+ n = map_get_size(mp);
+ if (is_immed(key)) {
+ for (i = 0; i < n; i++) {
+ if (keys[i] == key) {
+ return 0;
+ }
+ }
+ } else {
+ for (i = 0; i < n; i++) {
+ if (EQ(keys[i], key)) {
+ return 0;
+ }
+ }
+ }
+ return 1;
+}
+
+static Eterm get_map_element(Eterm map, Eterm key)
+{
+ map_t *mp;
+ Eterm* ks, *vs;
+ Uint i;
+ Uint n;
+
+ mp = (map_t *)map_val(map);
+ ks = map_get_keys(mp);
+ vs = map_get_values(mp);
+ n = map_get_size(mp);
+ if (is_immed(key)) {
+ for (i = 0; i < n; i++) {
+ if (ks[i] == key) {
+ return vs[i];
+ }
+ }
+ } else {
+ for (i = 0; i < n; i++) {
+ if (EQ(ks[i], key)) {
+ return vs[i];
+ }
+ }
+ }
+ return THE_NON_VALUE;
+}
+
+#define GET_TERM(term, dest) \
+do { \
+ Eterm src = (Eterm)(term); \
+ switch (src & _TAG_IMMED1_MASK) { \
+ case (R_REG_DEF << _TAG_PRIMARY_SIZE) | TAG_PRIMARY_HEADER: \
+ dest = x(0); \
+ break; \
+ case (X_REG_DEF << _TAG_PRIMARY_SIZE) | TAG_PRIMARY_HEADER: \
+ dest = x(src >> _TAG_IMMED1_SIZE); \
+ break; \
+ case (Y_REG_DEF << _TAG_PRIMARY_SIZE) | TAG_PRIMARY_HEADER: \
+ dest = y(src >> _TAG_IMMED1_SIZE); \
+ break; \
+ default: \
+ dest = src; \
+ break; \
+ } \
+} while(0)
+
+
+static Eterm
+new_map(Process* p, Eterm* reg, BeamInstr* I)
+{
+ Uint n = Arg(3);
+ Uint i;
+ Uint need = n + 1 /* hdr */ + 1 /*size*/ + 1 /* ptr */ + 1 /* arity */;
+ Eterm keys;
+ Eterm *mhp,*thp;
+ Eterm *E;
+ BeamInstr *ptr;
+ map_t *mp;
+
+ if (HeapWordsLeft(p) < need) {
+ erts_garbage_collect(p, need, reg, Arg(2));
+ }
+
+ thp = p->htop;
+ mhp = thp + 1 + n/2;
+ E = p->stop;
+ ptr = &Arg(4);
+ keys = make_tuple(thp);
+ *thp++ = make_arityval(n/2);
+
+ mp = (map_t *)mhp; mhp += MAP_HEADER_SIZE;
+ mp->thing_word = MAP_HEADER;
+ mp->size = n/2;
+ mp->keys = keys;
+
+ for (i = 0; i < n/2; i++) {
+ GET_TERM(*ptr++, *thp++);
+ GET_TERM(*ptr++, *mhp++);
+ }
+ p->htop = mhp;
+ return make_map(mp);
+}
+
+static Eterm
+update_map_assoc(Process* p, Eterm* reg, Eterm map, BeamInstr* I)
+{
+ Uint n;
+ Uint num_old;
+ Uint num_updates;
+ Uint need;
+ map_t *old_mp, *mp;
+ Eterm res;
+ Eterm* hp;
+ Eterm* E;
+ Eterm* old_keys;
+ Eterm* old_vals;
+ BeamInstr* new_p;
+ Eterm new_key;
+ Eterm* kp;
+
+ if (is_not_map(map)) {
+ return THE_NON_VALUE;
+ }
+
+ old_mp = (map_t *) map_val(map);
+ num_old = map_get_size(old_mp);
+
+ /*
+ * If the old map is empty, create a new map.
+ */
+
+ if (num_old == 0) {
+ return new_map(p, reg, I+1);
+ }
+
+ /*
+ * Allocate heap space for the worst case (i.e. all keys in the
+ * update list are new).
+ */
+
+ num_updates = Arg(4) / 2;
+ need = 2*(num_old+num_updates) + 1 + MAP_HEADER_SIZE;
+ if (HeapWordsLeft(p) < need) {
+ Uint live = Arg(3);
+ reg[live] = map;
+ erts_garbage_collect(p, need, reg, live+1);
+ map = reg[live];
+ old_mp = (map_t *)map_val(map);
+ }
+
+ /*
+ * Build the skeleton for the map, ready to be filled in.
+ *
+ * +-----------------------------------+
+ * | (Space for aritvyal for keys) | <-----------+
+ * +-----------------------------------+ |
+ * | (Space for key 1) | | <-- kp
+ * +-----------------------------------+ |
+ * . |
+ * . |
+ * . |
+ * +-----------------------------------+ |
+ * | (Space for last key) | |
+ * +-----------------------------------+ |
+ * | MAP_HEADER | |
+ * +-----------------------------------+ |
+ * | (Space for number of keys/values) | |
+ * +-----------------------------------+ |
+ * | Boxed tuple pointer >----------------+
+ * +-----------------------------------+
+ * | (Space for value 1) | <-- hp
+ * +-----------------------------------+
+ */
+
+ E = p->stop;
+ kp = p->htop + 1; /* Point to first key */
+ hp = kp + num_old + num_updates;
+
+ res = make_map(hp);
+ mp = (map_t *)hp;
+ hp += MAP_HEADER_SIZE;
+ mp->thing_word = MAP_HEADER;
+ mp->keys = make_tuple(kp-1);
+
+ old_vals = map_get_values(old_mp);
+ old_keys = map_get_keys(old_mp);
+
+ new_p = &Arg(5);
+ GET_TERM(*new_p, new_key);
+ n = num_updates;
+
+ /*
+ * Fill in keys and values, until we run out of either updates
+ * or old values and keys.
+ */
+
+ for (;;) {
+ Eterm key;
+ Sint c;
+
+ ASSERT(kp < (Eterm *)mp);
+ key = *old_keys;
+ if ((c = CMP_TERM(key, new_key)) < 0) {
+ /* Copy old key and value */
+ *kp++ = key;
+ *hp++ = *old_vals;
+ old_keys++, old_vals++, num_old--;
+ } else { /* Replace or insert new */
+ GET_TERM(new_p[1], *hp++);
+ if (c > 0) { /* If new new key */
+ *kp++ = new_key;
+ } else { /* If replacement */
+ *kp++ = key;
+ old_keys++, old_vals++, num_old--;
+ }
+ n--;
+ if (n == 0) {
+ break;
+ } else {
+ new_p += 2;
+ GET_TERM(*new_p, new_key);
+ }
+ }
+ if (num_old == 0) {
+ break;
+ }
+ }
+
+ /*
+ * At this point, we have run out of either old keys and values,
+ * or the update list. In other words, at least of one n and
+ * num_old must be zero.
+ */
+
+ if (n > 0) {
+ /*
+ * All old keys and values have been copied, but there
+ * are still new keys and values in the update list that
+ * must be copied.
+ */
+ ASSERT(num_old == 0);
+ while (n-- > 0) {
+ GET_TERM(new_p[0], *kp++);
+ GET_TERM(new_p[1], *hp++);
+ new_p += 2;
+ }
+ } else {
+ /*
+ * All updates are now done. We may still have old
+ * keys and values that we must copy.
+ */
+ ASSERT(n == 0);
+ while (num_old-- > 0) {
+ ASSERT(kp < (Eterm *)mp);
+ *kp++ = *old_keys++;
+ *hp++ = *old_vals++;
+ }
+ }
+
+ /*
+ * Calculate how many values that are unused at the end of the
+ * key tuple and fill it out with a bignum header.
+ */
+ if ((n = (Eterm *)mp - kp) > 0) {
+ *kp = make_pos_bignum_header(n-1);
+ }
+
+ /*
+ * Fill in the size of the map in both the key tuple and in the map.
+ */
+
+ n = kp - p->htop - 1; /* Actual number of keys/values */
+ *p->htop = make_arityval(n);
+ mp->size = n;
+ p->htop = hp;
+ return res;
+}
+
+/*
+ * Update values for keys that already exist in the map.
+ */
+
+static Eterm
+update_map_exact(Process* p, Eterm* reg, Eterm map, BeamInstr* I)
+{
+ Uint n;
+ Uint i;
+ Uint num_old;
+ Uint need;
+ map_t *old_mp, *mp;
+ Eterm res;
+ Eterm* hp;
+ Eterm* E;
+ Eterm* old_keys;
+ Eterm* old_vals;
+ BeamInstr* new_p;
+ Eterm new_key;
+
+ if (is_not_map(map)) {
+ return THE_NON_VALUE;
+ }
+
+ old_mp = (map_t *) map_val(map);
+ num_old = map_get_size(old_mp);
+
+ /*
+ * If the old map is empty, create a new map.
+ */
+
+ if (num_old == 0) {
+ return new_map(p, reg, I+1);
+ }
+
+ /*
+ * Allocate the exact heap space needed.
+ */
+
+ need = num_old + MAP_HEADER_SIZE;
+ if (HeapWordsLeft(p) < need) {
+ Uint live = Arg(3);
+ reg[live] = map;
+ erts_garbage_collect(p, need, reg, live+1);
+ map = reg[live];
+ old_mp = (map_t *)map_val(map);
+ }
+
+ /*
+ * Update map, keeping the old key tuple.
+ */
+
+ hp = p->htop;
+ E = p->stop;
+
+ old_vals = map_get_values(old_mp);
+ old_keys = map_get_keys(old_mp);
+
+ res = make_map(hp);
+ mp = (map_t *)hp;
+ hp += MAP_HEADER_SIZE;
+ mp->thing_word = MAP_HEADER;
+ mp->size = num_old;
+ mp->keys = old_mp->keys;
+
+ /* Get array of key/value pairs to be updated */
+ new_p = &Arg(5);
+ GET_TERM(*new_p, new_key);
+
+ /* Update all values */
+ n = Arg(4) / 2; /* Number of values to be updated */
+ ASSERT(n > 0);
+ for (i = 0; i < num_old; i++) {
+ if (!EQ(*old_keys, new_key)) {
+ /* Not same keys */
+ *hp++ = *old_vals;
+ } else {
+ GET_TERM(new_p[1], *hp);
+ hp++;
+ n--;
+ if (n == 0) {
+ /*
+ * All updates done. Copy remaining values
+ * and return the result.
+ */
+ for (i++, old_vals++; i < num_old; i++) {
+ *hp++ = *old_vals++;
+ }
+ ASSERT(hp == p->htop + need);
+ p->htop = hp;
+ return res;
+ } else {
+ new_p += 2;
+ GET_TERM(*new_p, new_key);
+ }
+ }
+ old_vals++, old_keys++;
+ }
+
+ /*
+ * Updates left. That means that at least one the keys in the
+ * update list did not previously exist.
+ */
+ ASSERT(hp == p->htop + need);
+ return THE_NON_VALUE;
+}
+#undef GET_TERM
int catchlevel(Process *p)
{
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