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-rw-r--r--erts/emulator/beam/external.c478
1 files changed, 314 insertions, 164 deletions
diff --git a/erts/emulator/beam/external.c b/erts/emulator/beam/external.c
index 45d1f7514e..b0b232f185 100644
--- a/erts/emulator/beam/external.c
+++ b/erts/emulator/beam/external.c
@@ -36,7 +36,9 @@
#include "erl_process.h"
#include "error.h"
#include "external.h"
+#define ERL_WANT_HIPE_BIF_WRAPPER__
#include "bif.h"
+#undef ERL_WANT_HIPE_BIF_WRAPPER__
#include "big.h"
#include "dist.h"
#include "erl_binary.h"
@@ -498,15 +500,37 @@ byte *erts_encode_ext_dist_header_finalize(byte *ext, ErtsAtomCache *cache, Uint
return ep;
}
-Uint erts_encode_dist_ext_size(Eterm term, Uint32 flags, ErtsAtomCacheMap *acmp)
+int erts_encode_dist_ext_size(Eterm term, Uint32 flags, ErtsAtomCacheMap *acmp,
+ Uint* szp)
{
- Uint sz = 0;
+ Uint sz;
+ if (encode_size_struct_int(NULL, acmp, term, flags, NULL, &sz)) {
+ return -1;
+ } else {
#ifndef ERTS_DEBUG_USE_DIST_SEP
- if (!(flags & DFLAG_DIST_HDR_ATOM_CACHE))
+ if (!(flags & DFLAG_DIST_HDR_ATOM_CACHE))
#endif
- sz++ /* VERSION_MAGIC */;
- sz += encode_size_struct2(acmp, term, flags);
- return sz;
+ sz++ /* VERSION_MAGIC */;
+
+ *szp += sz;
+ return 0;
+ }
+}
+
+int erts_encode_dist_ext_size_int(Eterm term, struct erts_dsig_send_context* ctx, Uint* szp)
+{
+ Uint sz;
+ if (encode_size_struct_int(&ctx->u.sc, ctx->acmp, term, ctx->flags, &ctx->reds, &sz)) {
+ return -1;
+ } else {
+#ifndef ERTS_DEBUG_USE_DIST_SEP
+ if (!(ctx->flags & DFLAG_DIST_HDR_ATOM_CACHE))
+#endif
+ sz++ /* VERSION_MAGIC */;
+
+ *szp += sz;
+ return 0;
+ }
}
Uint erts_encode_ext_size(Eterm term)
@@ -527,19 +551,16 @@ Uint erts_encode_ext_size_ets(Eterm term)
}
-void erts_encode_dist_ext(Eterm term, byte **ext, Uint32 flags, ErtsAtomCacheMap *acmp)
+int erts_encode_dist_ext(Eterm term, byte **ext, Uint32 flags, ErtsAtomCacheMap *acmp,
+ TTBEncodeContext* ctx, Sint* reds)
{
- byte *ep = *ext;
-#ifndef ERTS_DEBUG_USE_DIST_SEP
- if (!(flags & DFLAG_DIST_HDR_ATOM_CACHE))
-#endif
- *ep++ = VERSION_MAGIC;
- ep = enc_term(acmp, term, ep, flags, NULL);
- if (!ep)
- erl_exit(ERTS_ABORT_EXIT,
- "%s:%d:erts_encode_dist_ext(): Internal data structure error\n",
- __FILE__, __LINE__);
- *ext = ep;
+ if (!ctx || !ctx->wstack.wstart) {
+ #ifndef ERTS_DEBUG_USE_DIST_SEP
+ if (!(flags & DFLAG_DIST_HDR_ATOM_CACHE))
+ #endif
+ *(*ext)++ = VERSION_MAGIC;
+ }
+ return enc_term_int(ctx, acmp, term, *ext, flags, NULL, reds, ext);
}
void erts_encode_ext(Eterm term, byte **ext)
@@ -1161,7 +1182,8 @@ typedef struct {
Eterm* hp_end;
int remaining_n;
char* remaining_bytes;
- Eterm* maps_head;
+ Eterm* maps_list;
+ struct dec_term_hamt_placeholder* hamt_list;
} B2TDecodeContext;
typedef struct {
@@ -1487,7 +1509,8 @@ static BIF_RETTYPE binary_to_term_int(Process* p, Uint32 flags, Eterm bin, Binar
ctx->u.dc.hp_start = HAlloc(p, ctx->heap_size);
ctx->u.dc.hp = ctx->u.dc.hp_start;
ctx->u.dc.hp_end = ctx->u.dc.hp_start + ctx->heap_size;
- ctx->u.dc.maps_head = NULL;
+ ctx->u.dc.maps_list = NULL;
+ ctx->u.dc.hamt_list = NULL;
ctx->state = B2TDecode;
/*fall through*/
case B2TDecode:
@@ -1740,54 +1763,14 @@ erts_term_to_binary(Process* p, Eterm Term, int level, Uint flags) {
return erts_term_to_binary_simple(p, Term, size, level, flags);
}
-/* Define for testing */
-/* #define EXTREME_TTB_TRAPPING 1 */
+/* Define EXTREME_TTB_TRAPPING for testing in dist.h */
#ifndef EXTREME_TTB_TRAPPING
-#define TERM_TO_BINARY_LOOP_FACTOR 32
#define TERM_TO_BINARY_COMPRESS_CHUNK (1 << 18)
#else
-#define TERM_TO_BINARY_LOOP_FACTOR 1
#define TERM_TO_BINARY_COMPRESS_CHUNK 10
#endif
-
-
-typedef enum { TTBSize, TTBEncode, TTBCompress } TTBState;
-typedef struct TTBSizeContext_ {
- Uint flags;
- int level;
- Uint result;
- Eterm obj;
- ErtsEStack estack;
-} TTBSizeContext;
-
-typedef struct TTBEncodeContext_ {
- Uint flags;
- int level;
- byte* ep;
- Eterm obj;
- ErtsWStack wstack;
- Binary *result_bin;
-} TTBEncodeContext;
-
-typedef struct {
- Uint real_size;
- Uint dest_len;
- byte *dbytes;
- Binary *result_bin;
- Binary *destination_bin;
- z_stream stream;
-} TTBCompressContext;
-
-typedef struct {
- int alive;
- TTBState state;
- union {
- TTBSizeContext sc;
- TTBEncodeContext ec;
- TTBCompressContext cc;
- } s;
-} TTBContext;
+#define TERM_TO_BINARY_MEMCPY_FACTOR 8
static void ttb_context_destructor(Binary *context_bin)
{
@@ -1899,8 +1882,6 @@ static Eterm erts_term_to_binary_int(Process* p, Eterm Term, int level, Uint fla
}
result_bin = erts_bin_nrml_alloc(size);
- result_bin->flags = 0;
- result_bin->orig_size = size;
erts_refc_init(&result_bin->refc, 0);
result_bin->orig_bytes[0] = VERSION_MAGIC;
/* Next state immediately, no need to export context */
@@ -1925,7 +1906,6 @@ static Eterm erts_term_to_binary_int(Process* p, Eterm Term, int level, Uint fla
}
real_size = endp - bytes;
result_bin = erts_bin_realloc(context->s.ec.result_bin,real_size);
- result_bin->orig_size = real_size;
level = context->s.ec.level;
BUMP_REDS(p, (initial_reds - reds) / TERM_TO_BINARY_LOOP_FACTOR);
if (level == 0 || real_size < 6) { /* We are done */
@@ -1962,8 +1942,6 @@ static Eterm erts_term_to_binary_int(Process* p, Eterm Term, int level, Uint fla
context->s.cc.result_bin = result_bin;
result_bin = erts_bin_nrml_alloc(real_size);
- result_bin->flags = 0;
- result_bin->orig_size = real_size;
erts_refc_init(&result_bin->refc, 0);
result_bin->orig_bytes[0] = VERSION_MAGIC;
@@ -2005,7 +1983,6 @@ static Eterm erts_term_to_binary_int(Process* p, Eterm Term, int level, Uint fla
erl_zlib_deflate_finish(&(context->s.cc.stream));
result_bin = erts_bin_realloc(context->s.cc.destination_bin,
context->s.cc.dest_len+6);
- result_bin->orig_size = context->s.cc.dest_len+6;
context->s.cc.destination_bin = NULL;
pb = (ProcBin *) HAlloc(p, PROC_BIN_SIZE);
pb->thing_word = HEADER_PROC_BIN;
@@ -2327,8 +2304,10 @@ dec_pid(ErtsDistExternal *edep, Eterm** hpp, byte* ep, ErlOffHeap* off_heap, Ete
#define ENC_TERM ((Eterm) 0)
#define ENC_ONE_CONS ((Eterm) 1)
#define ENC_PATCH_FUN_SIZE ((Eterm) 2)
-#define ENC_LAST_ARRAY_ELEMENT ((Eterm) 3)
-
+#define ENC_BIN_COPY ((Eterm) 3)
+#define ENC_MAP_PAIR ((Eterm) 4)
+#define ENC_HASHMAP_NODE ((Eterm) 5)
+#define ENC_LAST_ARRAY_ELEMENT ((Eterm) 6)
static byte*
enc_term(ErtsAtomCacheMap *acmp, Eterm obj, byte* ep, Uint32 dflags,
@@ -2364,6 +2343,9 @@ enc_term_int(TTBEncodeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj, byte* ep,
WSTACK_RESTORE(s, &ctx->wstack);
ep = ctx->ep;
obj = ctx->obj;
+ if (is_non_value(obj)) {
+ goto outer_loop;
+ }
}
}
@@ -2387,8 +2369,8 @@ enc_term_int(TTBEncodeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj, byte* ep,
obj = CAR(cons);
tl = CDR(cons);
- WSTACK_PUSH(s, is_list(tl) ? ENC_ONE_CONS : ENC_TERM);
- WSTACK_PUSH(s, tl);
+ WSTACK_PUSH2(s, (is_list(tl) ? ENC_ONE_CONS : ENC_TERM),
+ tl);
}
break;
case ENC_PATCH_FUN_SIZE:
@@ -2401,6 +2383,46 @@ enc_term_int(TTBEncodeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj, byte* ep,
put_int32(ep - size_p, size_p);
}
goto outer_loop;
+ case ENC_BIN_COPY: {
+ Uint bits = (Uint)obj;
+ Uint bitoffs = WSTACK_POP(s);
+ byte* bytes = (byte*) WSTACK_POP(s);
+ byte* dst = (byte*) WSTACK_POP(s);
+ if (bits > r * (TERM_TO_BINARY_MEMCPY_FACTOR * 8)) {
+ Uint n = r * TERM_TO_BINARY_MEMCPY_FACTOR;
+ WSTACK_PUSH5(s, (UWord)(dst + n), (UWord)(bytes + n), bitoffs,
+ ENC_BIN_COPY, bits - 8*n);
+ bits = 8*n;
+ copy_binary_to_buffer(dst, 0, bytes, bitoffs, bits);
+ obj = THE_NON_VALUE;
+ r = 0; /* yield */
+ break;
+ } else {
+ copy_binary_to_buffer(dst, 0, bytes, bitoffs, bits);
+ r -= bits / (TERM_TO_BINARY_MEMCPY_FACTOR * 8);
+ goto outer_loop;
+ }
+ }
+ case ENC_MAP_PAIR: {
+ Uint pairs_left = obj;
+ Eterm *vptr = (Eterm*) WSTACK_POP(s);
+ Eterm *kptr = (Eterm*) WSTACK_POP(s);
+
+ obj = *kptr;
+ if (--pairs_left > 0) {
+ WSTACK_PUSH4(s, (UWord)(kptr+1), (UWord)(vptr+1),
+ ENC_MAP_PAIR, pairs_left);
+ }
+ WSTACK_PUSH2(s, ENC_TERM, *vptr);
+ break;
+ }
+ case ENC_HASHMAP_NODE:
+ if (is_list(obj)) { /* leaf node [K|V] */
+ ptr = list_val(obj);
+ WSTACK_PUSH2(s, ENC_TERM, CDR(ptr));
+ obj = CAR(ptr);
+ }
+ break;
case ENC_LAST_ARRAY_ELEMENT:
/* obj is the tuple */
{
@@ -2419,17 +2441,16 @@ enc_term_int(TTBEncodeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj, byte* ep,
#else
Eterm* ptr = (Eterm *) obj;
#endif
- WSTACK_PUSH(s, val-1);
obj = *ptr++;
- WSTACK_PUSH(s, (UWord)ptr);
+ WSTACK_PUSH2(s, val-1, (UWord)ptr);
}
break;
}
L_jump_start:
- if (ctx && --r == 0) {
- *reds = r;
+ if (ctx && --r <= 0) {
+ *reds = 0;
ctx->obj = obj;
ctx->ep = ep;
WSTACK_SAVE(s, &ctx->wstack);
@@ -2578,35 +2599,60 @@ enc_term_int(TTBEncodeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj, byte* ep,
ep += 4;
}
if (i > 0) {
- WSTACK_PUSH(s, ENC_LAST_ARRAY_ELEMENT+i-1);
- WSTACK_PUSH(s, (UWord)ptr);
+ WSTACK_PUSH2(s, ENC_LAST_ARRAY_ELEMENT+i-1, (UWord)ptr);
}
break;
case MAP_DEF:
{
- map_t *mp = (map_t*)map_val(obj);
- Uint size = map_get_size(mp);
+ flatmap_t *mp = (flatmap_t*)flatmap_val(obj);
+ Uint size = flatmap_get_size(mp);
*ep++ = MAP_EXT;
put_int32(size, ep); ep += 4;
if (size > 0) {
- Eterm *kptr = map_get_keys(mp);
- Eterm *vptr = map_get_values(mp);
-
- for (i = size-1; i >= 1; i--) {
- WSTACK_PUSH(s, ENC_TERM);
- WSTACK_PUSH(s, (UWord) vptr[i]);
- WSTACK_PUSH(s, ENC_TERM);
- WSTACK_PUSH(s, (UWord) kptr[i]);
- }
+ Eterm *kptr = flatmap_get_keys(mp);
+ Eterm *vptr = flatmap_get_values(mp);
- WSTACK_PUSH(s, ENC_TERM);
- WSTACK_PUSH(s, (UWord) vptr[0]);
+ WSTACK_PUSH4(s, (UWord)kptr, (UWord)vptr,
+ ENC_MAP_PAIR, size);
+ }
+ }
+ break;
- obj = kptr[0];
- goto L_jump_start;
+ case HASHMAP_DEF:
+ {
+ Eterm hdr;
+ Uint node_sz;
+ ptr = boxed_val(obj);
+ hdr = *ptr;
+ ASSERT(is_header(hdr));
+ switch(hdr & _HEADER_MAP_SUBTAG_MASK) {
+ case HAMT_SUBTAG_HEAD_ARRAY:
+ *ep++ = MAP_EXT;
+ ptr++;
+ put_int32(*ptr, ep); ep += 4;
+ node_sz = 16;
+ break;
+ case HAMT_SUBTAG_HEAD_BITMAP:
+ *ep++ = MAP_EXT;
+ ptr++;
+ put_int32(*ptr, ep); ep += 4;
+ /*fall through*/
+ case HAMT_SUBTAG_NODE_BITMAP:
+ node_sz = hashmap_bitcount(MAP_HEADER_VAL(hdr));
+ ASSERT(node_sz < 17);
+ break;
+ default:
+ erl_exit(1, "bad header\r\n");
+ }
+
+ ptr++;
+ WSTACK_RESERVE(s, node_sz*2);
+ while(node_sz--) {
+ WSTACK_FAST_PUSH(s, ENC_HASHMAP_NODE);
+ WSTACK_FAST_PUSH(s, *ptr++);
}
}
break;
@@ -2644,6 +2690,7 @@ enc_term_int(TTBEncodeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj, byte* ep,
Uint bitoffs;
Uint bitsize;
byte* bytes;
+ byte* data_dst;
ERTS_GET_BINARY_BYTES(obj, bytes, bitoffs, bitsize);
if (dflags & DFLAG_INTERNAL_TAGS) {
@@ -2689,7 +2736,7 @@ enc_term_int(TTBEncodeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj, byte* ep,
j = binary_size(obj);
put_int32(j, ep);
ep += 4;
- copy_binary_to_buffer(ep, 0, bytes, bitoffs, 8*j);
+ data_dst = ep;
ep += j;
} else if (dflags & DFLAG_BIT_BINARIES) {
/* Bit-level binary. */
@@ -2699,7 +2746,7 @@ enc_term_int(TTBEncodeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj, byte* ep,
ep += 4;
*ep++ = bitsize;
ep[j] = 0; /* Zero unused bits at end of binary */
- copy_binary_to_buffer(ep, 0, bytes, bitoffs, 8*j+bitsize);
+ data_dst = ep;
ep += j + 1;
} else {
/*
@@ -2713,11 +2760,18 @@ enc_term_int(TTBEncodeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj, byte* ep,
put_int32((j+1), ep);
ep += 4;
ep[j] = 0; /* Zero unused bits at end of binary */
- copy_binary_to_buffer(ep, 0, bytes, bitoffs, 8*j+bitsize);
+ data_dst = ep;
ep += j+1;
*ep++ = SMALL_INTEGER_EXT;
*ep++ = bitsize;
}
+ if (ctx && j > r * TERM_TO_BINARY_MEMCPY_FACTOR) {
+ WSTACK_PUSH5(s, (UWord)data_dst, (UWord)bytes, bitoffs,
+ ENC_BIN_COPY, 8*j + bitsize);
+ } else {
+ copy_binary_to_buffer(data_dst, 0, bytes, bitoffs,
+ 8 * j + bitsize);
+ }
}
break;
case EXPORT_DEF:
@@ -2746,13 +2800,12 @@ enc_term_int(TTBEncodeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj, byte* ep,
case FUN_DEF:
{
ErlFunThing* funp = (ErlFunThing *) fun_val(obj);
+ int ei;
if ((dflags & DFLAG_NEW_FUN_TAGS) != 0) {
- int ei;
-
*ep++ = NEW_FUN_EXT;
- WSTACK_PUSH(s, ENC_PATCH_FUN_SIZE);
- WSTACK_PUSH(s, (UWord) ep); /* Position for patching in size */
+ WSTACK_PUSH2(s, ENC_PATCH_FUN_SIZE,
+ (UWord) ep); /* Position for patching in size */
ep += 4;
*ep = funp->arity;
ep += 1;
@@ -2766,16 +2819,6 @@ enc_term_int(TTBEncodeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj, byte* ep,
ep = enc_term(acmp, make_small(funp->fe->old_index), ep, dflags, off_heap);
ep = enc_term(acmp, make_small(funp->fe->old_uniq), ep, dflags, off_heap);
ep = enc_pid(acmp, funp->creator, ep, dflags);
-
- fun_env:
- for (ei = funp->num_free-1; ei > 0; ei--) {
- WSTACK_PUSH(s, ENC_TERM);
- WSTACK_PUSH(s, (UWord) funp->env[ei]);
- }
- if (funp->num_free != 0) {
- obj = funp->env[0];
- goto L_jump_start;
- }
} else {
/*
* Communicating with an obsolete erl_interface or
@@ -2807,7 +2850,13 @@ enc_term_int(TTBEncodeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj, byte* ep,
*ep++ = SMALL_TUPLE_EXT;
put_int8(funp->num_free, ep);
ep += 1;
- goto fun_env;
+ }
+ for (ei = funp->num_free-1; ei > 0; ei--) {
+ WSTACK_PUSH2(s, ENC_TERM, (UWord) funp->env[ei]);
+ }
+ if (funp->num_free != 0) {
+ obj = funp->env[0];
+ goto L_jump_start;
}
}
break;
@@ -2889,9 +2938,19 @@ undo_offheap_in_area(ErlOffHeap* off_heap, Eterm* start, Eterm* end)
#endif /* DEBUG */
}
+struct dec_term_hamt_placeholder
+{
+ struct dec_term_hamt_placeholder* next;
+ Eterm* objp; /* write result here */
+ Uint size; /* nr of leafs */
+ Eterm leafs[1];
+};
+
+#define DEC_TERM_HAMT_PLACEHOLDER_SIZE \
+ (offsetof(struct dec_term_hamt_placeholder, leafs) / sizeof(Eterm))
/* Decode term from external format into *objp.
-** On failure return NULL and (R13B04) *hpp will be unchanged.
+** On failure return NULL and *hpp will be unchanged.
*/
static byte*
dec_term(ErtsDistExternal *edep, Eterm** hpp, byte* ep, ErlOffHeap* off_heap,
@@ -2901,7 +2960,8 @@ dec_term(ErtsDistExternal *edep, Eterm** hpp, byte* ep, ErlOffHeap* off_heap,
int n;
ErtsAtomEncoding char_enc;
register Eterm* hp; /* Please don't take the address of hp */
- Eterm *maps_head; /* for validation of maps */
+ Eterm *maps_list; /* for preprocessing of small maps */
+ struct dec_term_hamt_placeholder* hamt_list; /* for preprocessing of big maps */
Eterm* next;
SWord reds;
@@ -2911,7 +2971,8 @@ dec_term(ErtsDistExternal *edep, Eterm** hpp, byte* ep, ErlOffHeap* off_heap,
next = ctx->u.dc.next;
ep = ctx->u.dc.ep;
hpp = &ctx->u.dc.hp;
- maps_head = ctx->u.dc.maps_head;
+ maps_list = ctx->u.dc.maps_list;
+ hamt_list = ctx->u.dc.hamt_list;
if (ctx->state != B2TDecode) {
int n_limit = reds;
@@ -2992,7 +3053,8 @@ dec_term(ErtsDistExternal *edep, Eterm** hpp, byte* ep, ErlOffHeap* off_heap,
reds = ERTS_SWORD_MAX;
next = objp;
*next = (Eterm) (UWord) NULL;
- maps_head = NULL;
+ maps_list = NULL;
+ hamt_list = NULL;
}
hp = *hpp;
@@ -3389,8 +3451,6 @@ dec_term_atom_common:
} else {
Binary* dbin = erts_bin_nrml_alloc(n);
ProcBin* pb;
- dbin->flags = 0;
- dbin->orig_size = n;
erts_refc_init(&dbin->refc, 1);
pb = (ProcBin *) hp;
hp += PROC_BIN_SIZE;
@@ -3398,6 +3458,7 @@ dec_term_atom_common:
pb->size = n;
pb->next = off_heap->first;
off_heap->first = (struct erl_off_heap_header*)pb;
+ OH_OVERHEAD(off_heap, pb->size / sizeof(Eterm));
pb->val = dbin;
pb->bytes = (byte*) dbin->orig_bytes;
pb->flags = 0;
@@ -3443,14 +3504,13 @@ dec_term_atom_common:
Binary* dbin = erts_bin_nrml_alloc(n);
ProcBin* pb;
- dbin->flags = 0;
- dbin->orig_size = n;
erts_refc_init(&dbin->refc, 1);
pb = (ProcBin *) hp;
pb->thing_word = HEADER_PROC_BIN;
pb->size = n;
pb->next = off_heap->first;
off_heap->first = (struct erl_off_heap_header*)pb;
+ OH_OVERHEAD(off_heap, pb->size / sizeof(Eterm));
pb->val = dbin;
pb->bytes = (byte*) dbin->orig_bytes;
pb->flags = 0;
@@ -3532,46 +3592,67 @@ dec_term_atom_common:
break;
case MAP_EXT:
{
- map_t *mp;
Uint32 size,n;
Eterm *kptr,*vptr;
Eterm keys;
size = get_int32(ep); ep += 4;
- keys = make_tuple(hp);
- *hp++ = make_arityval(size);
- hp += size;
- kptr = hp - 1;
-
- mp = (map_t*)hp;
- hp += MAP_HEADER_SIZE;
- hp += size;
- vptr = hp - 1;
-
- /* kptr, last word for keys
- * vptr, last word for values
- */
-
- /*
- * Use thing_word to link through decoded maps.
- * The list of maps is for later validation.
- */
-
- mp->thing_word = (Eterm) COMPRESS_POINTER(maps_head);
- maps_head = (Eterm *) mp;
-
- mp->size = size;
- mp->keys = keys;
- *objp = make_map(mp);
-
- for (n = size; n; n--) {
- *vptr = (Eterm) COMPRESS_POINTER(next);
- *kptr = (Eterm) COMPRESS_POINTER(vptr);
- next = kptr;
- vptr--;
- kptr--;
- }
+ if (size <= MAP_SMALL_MAP_LIMIT) {
+ flatmap_t *mp;
+
+ keys = make_tuple(hp);
+ *hp++ = make_arityval(size);
+ hp += size;
+ kptr = hp - 1;
+
+ mp = (flatmap_t*)hp;
+ hp += MAP_HEADER_SIZE;
+ hp += size;
+ vptr = hp - 1;
+
+ /* kptr, last word for keys
+ * vptr, last word for values
+ */
+
+ /*
+ * Use thing_word to link through decoded maps.
+ * The list of maps is for later validation.
+ */
+
+ mp->thing_word = (Eterm) COMPRESS_POINTER(maps_list);
+ maps_list = (Eterm *) mp;
+
+ mp->size = size;
+ mp->keys = keys;
+ *objp = make_flatmap(mp);
+
+ for (n = size; n; n--) {
+ *vptr = (Eterm) COMPRESS_POINTER(next);
+ *kptr = (Eterm) COMPRESS_POINTER(vptr);
+ next = kptr;
+ vptr--;
+ kptr--;
+ }
+ }
+ else { /* Make hamt */
+ struct dec_term_hamt_placeholder* holder =
+ (struct dec_term_hamt_placeholder*) hp;
+
+ holder->next = hamt_list;
+ hamt_list = holder;
+ holder->objp = objp;
+ holder->size = size;
+
+ hp += DEC_TERM_HAMT_PLACEHOLDER_SIZE;
+
+ for (n = size; n; n--) {
+ CDR(hp) = (Eterm) COMPRESS_POINTER(next);
+ CAR(hp) = (Eterm) COMPRESS_POINTER(&CDR(hp));
+ next = &CAR(hp);
+ hp += 2;
+ }
+ }
}
break;
case NEW_FUN_EXT:
@@ -3749,6 +3830,7 @@ dec_term_atom_common:
hp += PROC_BIN_SIZE;
pb->next = off_heap->first;
off_heap->first = (struct erl_off_heap_header*)pb;
+ OH_OVERHEAD(off_heap, pb->size / sizeof(Eterm));
pb->flags = 0;
*objp = make_binary(pb);
break;
@@ -3766,6 +3848,7 @@ dec_term_atom_common:
hp += PROC_BIN_SIZE;
pb->next = off_heap->first;
off_heap->first = (struct erl_off_heap_header*)pb;
+ OH_OVERHEAD(off_heap, pb->size / sizeof(Eterm));
pb->flags = 0;
sub = (ErlSubBin*)hp;
@@ -3792,7 +3875,8 @@ dec_term_atom_common:
ctx->u.dc.ep = ep;
ctx->u.dc.next = next;
ctx->u.dc.hp = hp;
- ctx->u.dc.maps_head = maps_head;
+ ctx->u.dc.maps_list = maps_list;
+ ctx->u.dc.hamt_list = hamt_list;
ctx->reds = 0;
return NULL;
}
@@ -3807,12 +3891,40 @@ dec_term_atom_common:
* - done here for when we know it is complete.
*/
- while (maps_head) {
- next = (Eterm *)(EXPAND_POINTER(*maps_head));
- *maps_head = MAP_HEADER;
- if (!erts_validate_and_sort_map((map_t*)maps_head))
+ while (maps_list) {
+ next = (Eterm *)(EXPAND_POINTER(*maps_list));
+ *maps_list = MAP_HEADER;
+ if (!erts_validate_and_sort_flatmap((flatmap_t*)maps_list))
goto error;
- maps_head = next;
+ maps_list = next;
+ }
+
+ /* Iterate through all the hamts and build tree nodes.
+ */
+ if (hamt_list) {
+ ErtsHeapFactory factory;
+
+ factory.p = NULL;
+ factory.hp = hp;
+ /* We assume heap will suffice (see hashmap_over_estimated_heap_size) */
+
+ do {
+ struct dec_term_hamt_placeholder* hamt = hamt_list;
+ *hamt->objp = erts_hashmap_from_array(&factory,
+ hamt->leafs,
+ hamt->size,
+ 1);
+ if (is_non_value(*hamt->objp))
+ goto error;
+
+ hamt_list = hamt->next;
+
+ /* Yes, we waste a couple of heap words per hamt
+ for the temporary placeholder */
+ *(Eterm*)hamt = make_pos_bignum_header(DEC_TERM_HAMT_PLACEHOLDER_SIZE-1);
+ } while (hamt_list);
+
+ hp = factory.hp;
}
if (ctx) {
@@ -4010,15 +4122,15 @@ encode_size_struct_int(TTBSizeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj,
break;
case MAP_DEF:
{
- map_t *mp = (map_t*)map_val(obj);
- Uint size = map_get_size(mp);
+ flatmap_t *mp = (flatmap_t*)flatmap_val(obj);
+ Uint size = flatmap_get_size(mp);
Uint i;
Eterm *ptr;
result += 1 + 4; /* tag + 4 bytes size */
/* push values first */
- ptr = map_get_values(mp);
+ ptr = flatmap_get_values(mp);
i = size;
while(i--) {
if (is_list(*ptr)) {
@@ -4032,7 +4144,7 @@ encode_size_struct_int(TTBSizeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj,
++ptr;
}
- ptr = map_get_keys(mp);
+ ptr = flatmap_get_keys(mp);
i = size;
while(i--) {
if (is_list(*ptr)) {
@@ -4048,6 +4160,38 @@ encode_size_struct_int(TTBSizeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj,
goto outer_loop;
}
break;
+
+ case HASHMAP_DEF:
+ {
+ Eterm *ptr;
+ Eterm hdr;
+ Uint node_sz;
+ ptr = boxed_val(obj);
+ hdr = *ptr;
+ ASSERT(is_header(hdr));
+ switch(hdr & _HEADER_MAP_SUBTAG_MASK) {
+ case HAMT_SUBTAG_HEAD_ARRAY:
+ ptr++;
+ node_sz = 16;
+ break;
+ case HAMT_SUBTAG_HEAD_BITMAP: ptr++;
+ case HAMT_SUBTAG_NODE_BITMAP:
+ node_sz = hashmap_bitcount(MAP_HEADER_VAL(hdr));
+ ASSERT(node_sz < 17);
+ break;
+ default:
+ erl_exit(1, "bad header\r\n");
+ }
+
+ ptr++;
+ ESTACK_RESERVE(s, node_sz);
+ while(node_sz--) {
+ ESTACK_FAST_PUSH(s, *ptr++);
+ }
+ result += 1 + 4; /* tag + 4 bytes size */
+ }
+
+ break;
case FLOAT_DEF:
if (dflags & DFLAG_NEW_FLOATS) {
result += 9;
@@ -4150,6 +4294,8 @@ encode_size_struct_int(TTBSizeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj,
return 0;
}
+
+
static Sint
decoded_size(byte *ep, byte* endp, int internal_tags, B2TContext* ctx)
{
@@ -4343,7 +4489,11 @@ init_done:
n = get_int32(ep);
ep += 4;
ADDTERMS(2*n);
- heap_size += 3 + n + 1 + n;
+ if (n <= MAP_SMALL_MAP_LIMIT) {
+ heap_size += 3 + n + 1 + n;
+ } else {
+ heap_size += hashmap_over_estimated_heap_size(n);
+ }
break;
case STRING_EXT:
CHKSIZE(2);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 02:46:57 +0000