diff options
Diffstat (limited to 'erts/emulator')
| -rw-r--r-- | erts/emulator/beam/external.c | 197 | ||||
| -rw-r--r-- | erts/emulator/beam/external.h | 1 |
2 files changed, 183 insertions, 15 deletions
diff --git a/erts/emulator/beam/external.c b/erts/emulator/beam/external.c index 5e7a5cab6e..a31b2731be 100644 --- a/erts/emulator/beam/external.c +++ b/erts/emulator/beam/external.c @@ -42,6 +42,7 @@ #include "erl_binary.h" #include "erl_bits.h" #include "erl_zlib.h" +#include "erl_map.h" #ifdef HIPE #include "hipe_mode_switch.h" @@ -2555,6 +2556,38 @@ enc_term_int(TTBEncodeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj, byte* ep, } break; + case MAP_DEF: + { + map_t *mp = (map_t*)map_val(obj); + Uint size = map_get_size(mp); + Eterm *mptr; + + *ep++ = MAP_EXT; + put_int32(size, ep); ep += 4; + + /* Push values first */ + if (size > 0) { + mptr = map_get_values(mp); + for (i = size-1; i >= 1; i--) { + WSTACK_PUSH(s, ENC_TERM); + WSTACK_PUSH(s, (UWord) mptr[i]); + } + + WSTACK_PUSH(s, ENC_TERM); + WSTACK_PUSH(s, (UWord) mptr[0]); + + mptr = map_get_keys(mp); + for (i = size-1; i >= 1; i--) { + WSTACK_PUSH(s, ENC_TERM); + WSTACK_PUSH(s, (UWord) mptr[i]); + } + + obj = mptr[0]; + goto L_jump_start; + } + } + break; + case FLOAT_DEF: GET_DOUBLE(obj, f); if (dflags & DFLAG_NEW_FLOATS) { @@ -2845,6 +2878,7 @@ 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 = NULL; /* for validation of maps */ Eterm* next; SWord reds; @@ -3469,6 +3503,65 @@ dec_term_atom_common: break; } 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); + kptr = hp; + hp += size; + + mp = (map_t*)hp; + hp += MAP_HEADER_SIZE; + vptr = hp; + hp += size; + + /* kptr, first word for keys + * vptr, first 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); + + /* We assume the map is wellformed, meaning: + * - ascending key order + * - unique keys + */ + + objp = vptr + size - 1; + n = size; + + while (n-- > 0) { + *objp = (Eterm) COMPRESS_POINTER(next); + next = objp; + objp--; + } + + objp = kptr + size - 1; + n = size; + + while (n-- > 0) { + *objp = (Eterm) COMPRESS_POINTER(next); + next = objp; + objp--; + } + } + break; case NEW_FUN_EXT: { ErlFunThing* funp = (ErlFunThing *) hp; @@ -3678,21 +3771,7 @@ dec_term_atom_common: } default: - error: - /* UNDO: - * Must unlink all off-heap objects that may have been - * linked into the process. - */ - if (hp < *hpp) { /* Sometimes we used hp and sometimes *hpp */ - hp = *hpp; /* the largest must be the freshest */ - } - undo_offheap_in_area(off_heap, hp_saved, hp); - *hpp = hp_saved; - if (ctx) { - ctx->state = B2TDecodeFail; - ctx->reds = reds; - } - return NULL; + goto error; } if (--reds <= 0) { @@ -3710,12 +3789,53 @@ dec_term_atom_common: } } } + + /* Iterate through all the maps and check for validity + * - done here for when we know it is complete. + */ + + while (maps_head) { + Eterm *keys; + Sint arity; + + next = (Eterm *)(EXPAND_POINTER(*maps_head)); + keys = tuple_val(*(maps_head + 2)); + arity = arityval(*keys++); + + while(arity-- > 1) { + if (CMP(keys[arity-1],keys[arity]) >= 0) { + goto error; + } + } + + *maps_head = MAP_HEADER; + maps_head = next; + } + if (ctx) { ctx->state = B2TDone; ctx->reds = reds; } + *hpp = hp; return ep; + +error: + /* UNDO: + * Must unlink all off-heap objects that may have been + * linked into the process. + */ + if (hp < *hpp) { /* Sometimes we used hp and sometimes *hpp */ + hp = *hpp; /* the largest must be the freshest */ + } + undo_offheap_in_area(off_heap, hp_saved, hp); + *hpp = hp_saved; + if (ctx) { + ctx->state = B2TDecodeFail; + ctx->reds = reds; + } + + return NULL; } /* returns the number of bytes needed to encode an object @@ -3885,6 +4005,46 @@ encode_size_struct_int(TTBSizeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj, goto outer_loop; } break; + case MAP_DEF: + { + map_t *mp = (map_t*)map_val(obj); + Uint size = map_get_size(mp); + Uint i; + Eterm *ptr; + + result += 1 + 4; /* tag + 4 bytes size */ + + /* push values first */ + ptr = map_get_values(mp); + i = size; + while(i--) { + if (is_list(*ptr)) { + if ((m = is_string(*ptr)) && (m < MAX_STRING_LEN)) { + result += m + 2 + 1; + } else { + result += 5; + } + } + ESTACK_PUSH(s,*ptr); + ++ptr; + } + + ptr = map_get_keys(mp); + i = size; + while(i--) { + if (is_list(*ptr)) { + if ((m = is_string(*ptr)) && (m < MAX_STRING_LEN)) { + result += m + 2 + 1; + } else { + result += 5; + } + } + ESTACK_PUSH(s,*ptr); + ++ptr; + } + goto outer_loop; + } + break; case FLOAT_DEF: if (dflags & DFLAG_NEW_FLOATS) { result += 9; @@ -4175,6 +4335,13 @@ init_done: ADDTERMS(n); heap_size += n + 1; break; + case MAP_EXT: + CHKSIZE(4); + n = get_int32(ep); + ep += 4; + ADDTERMS(2*n); + heap_size += 3 + n + 1 + n; + break; case STRING_EXT: CHKSIZE(2); n = get_int16(ep); diff --git a/erts/emulator/beam/external.h b/erts/emulator/beam/external.h index 83001b2c7e..bf00958eb1 100644 --- a/erts/emulator/beam/external.h +++ b/erts/emulator/beam/external.h @@ -50,6 +50,7 @@ #define LARGE_BIG_EXT 'o' #define NEW_FUN_EXT 'p' #define EXPORT_EXT 'q' +#define MAP_EXT 't' #define FUN_EXT 'u' #define ATOM_UTF8_EXT 'v' #define SMALL_ATOM_UTF8_EXT 'w' |