about summary refs log blame commit diff stats
path: root/arc/highlights
blob: bb81fb569ca4e508a801907552deba6bb4350292 (plain) (tree) 
27d5dd34 ^



27d5dd34 ^








eee42c94 ^










1
2
3

4
5
6
7
8
9
10
11

12
13
14
15
16
17
18
19
20
21



                                                                                                     







                                                                









                                                        
" vim: ft=vim
" Data-flow highlighting: http://www.reddit.com/r/programming/comments/1w76um/coding_in_color/cezpios

highlight highlight_97a5a5e3 ctermfg=205
call matchadd('highlight_97a5a5e3', '\<ncols\>')
highlight highlight_1f88e41c ctermfg=139
call matchadd('highlight_1f88e41c', '\<nrows\>')
highlight highlight_6da20a96 ctermfg=141
call matchadd('highlight_6da20a96', '\<rowidx\>')
highlight highlight_ae83eebb ctermfg=149
call matchadd('highlight_ae83eebb', 'curr-line-address-address')
highlight highlight_bb695e14 ctermfg=36
call matchadd('highlight_bb695e14', '\<default-scope\>')
highlight highlight_1e44ab4f ctermfg=208
call matchadd('highlight_1e44ab4f', '\<first-arg\>')
highlight highlight_3323f077 ctermfg=208
call matchadd('highlight_3323f077', '\<first-arg-box\>')
highlight highlight_74fc42b2 ctermfg=220
call matchadd('highlight_74fc42b2', 'second-arg')
highlight highlight_ff6f0571 ctermfg=220
call matchadd('highlight_ff6f0571', 'second-arg-box')
generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2024-11-30 10:04:49 +0000
'>290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 
//: Update refcounts when copying addresses.
//: The top of the address layer has more on refcounts.

:(scenario refcounts)
def main [
  1:address:num <- copy 1000/unsafe
  2:address:num <- copy 1:address:num
  1:address:num <- copy 0
  2:address:num <- copy 0
]
+run: {1: ("address" "number")} <- copy {1000: "literal", "unsafe": ()}
+mem: incrementing refcount of 1000: 0 -> 1
+run: {2: ("address" "number")} <- copy {1: ("address" "number")}
+mem: incrementing refcount of 1000: 1 -> 2
+run: {1: ("address" "number")} <- copy {0: "literal"}
+mem: decrementing refcount of 1000: 2 -> 1
+run: {2: ("address" "number")} <- copy {0: "literal"}
+mem: decrementing refcount of 1000: 1 -> 0

:(before "End Globals")
//: escape hatch for a later layer
bool Update_refcounts_in_write_memory = true;

:(before "End write_memory(x) Special-cases")
if (Update_refcounts_in_write_memory)
  update_any_refcounts(x, data);

:(code)
void update_any_refcounts(const reagent& canonized_x, const vector<double>& data) {
  increment_any_refcounts(canonized_x, data);  // increment first so we don't reclaim on x <- copy x
  decrement_any_refcounts(canonized_x);
}

void increment_any_refcounts(const reagent& canonized_x, const vector<double>& data) {
  if (is_mu_address(canonized_x)) {
    assert(scalar(data));
    assert(!canonized_x.metadata.size);
    increment_refcount(data.at(0));
  }
  // End Increment Refcounts(canonized_x)
}

void increment_refcount(int new_address) {
  assert(new_address >= 0);
  if (new_address == 0) return;
  int new_refcount = get_or_insert(Memory, new_address);
  trace(9999, "mem") << "incrementing refcount of " << new_address << ": " << new_refcount << " -> " << new_refcount+1 << end();
  put(Memory, new_address, new_refcount+1);
}

void decrement_any_refcounts(const reagent& canonized_x) {
  if (is_mu_address(canonized_x)) {
    assert(canonized_x.value);
    assert(!canonized_x.metadata.size);
    decrement_refcount(get_or_insert(Memory, canonized_x.value), canonized_x.type->right, payload_size(canonized_x));
  }
  // End Decrement Refcounts(canonized_x)
}

void decrement_refcount(int old_address, const type_tree* payload_type, int payload_size) {
  assert(old_address >= 0);
  if (old_address) {
    int old_refcount = get_or_insert(Memory, old_address);
    trace(9999, "mem") << "decrementing refcount of " << old_address << ": " << old_refcount << " -> " << old_refcount-1 << end();
    --old_refcount;
    put(Memory, old_address, old_refcount);
    if (old_refcount < 0) {
      tb_shutdown();
      cerr << "Negative refcount!!! " << old_address << ' ' << old_refcount << '\n';
      if (Trace_stream) {
        cerr << "Saving trace to last_trace.\n";
        ofstream fout("last_trace");
        fout << Trace_stream->readable_contents("");
        fout.close();
      }
      exit(0);
    }
    // End Decrement Refcount(old_address, payload_type, payload_size)
  }
}

int payload_size(reagent/*copy*/ x) {
  x.properties.push_back(pair<string, string_tree*>("lookup", NULL));
  lookup_memory_core(x, /*check for nulls*/false);
  return size_of(x) + /*refcount*/1;
}

:(scenario refcounts_reflexive)
def main [
  1:address:num <- new number:type
  # idempotent copies leave refcount unchanged
  1:address:num <- copy 1:address:num
]
+run: {1: ("address" "number")} <- new {number: "type"}
+mem: incrementing refcount of 1000: 0 -> 1
+run: {1: ("address" "number")} <- copy {1: ("address" "number")}
+mem: incrementing refcount of 1000: 1 -> 2
+mem: decrementing refcount of 1000: 2 -> 1

:(scenario refcounts_call)
def main [
  1:address:num <- new number:type
  # passing in addresses to recipes increments refcount
  foo 1:address:num
  # return does NOT yet decrement refcount; memory must be explicitly managed
  1:address:num <- new number:type
]
def foo [
  2:address:num <- next-ingredient
]
+run: {1: ("address" "number")} <- new {number: "type"}
+mem: incrementing refcount of 1000: 0 -> 1
+run: foo {1: ("address" "number")}
# leave ambiguous precisely when the next increment happens; a later layer
# will mess with that
+mem: incrementing refcount of 1000: 1 -> 2
+run: {1: ("address" "number")} <- new {number: "type"}
+mem: decrementing refcount of 1000: 2 -> 1

//: fix up any instructions that don't follow the usual flow of read_memory
//: before the RUN switch, and write_memory after

:(scenario refcounts_put)
container foo [
  x:address:num
]
def main [
  1:address:num <- new number:type
  2:address:foo <- new foo:type
  *2:address:foo <- put *2:address:foo, x:offset, 1:address:num
]
+run: {1: ("address" "number")} <- new {number: "type"}
+mem: incrementing refcount of 1000: 0 -> 1
+run: {2: ("address" "foo")} <- new {foo: "type"}
+mem: incrementing refcount of 1002: 0 -> 1
+run: {2: ("address" "foo"), "lookup": ()} <- put {2: ("address" "foo"), "lookup": ()}, {x: "offset"}, {1: ("address" "number")}
# put increments refcount
+mem: incrementing refcount of 1000: 1 -> 2

:(after "Write Memory in PUT in Run")
reagent/*copy*/ element = element_type(base.type, offset);
assert(!has_property(element, "lookup"));
element.set_value(address);
update_any_refcounts(element, ingredients.at(2));

:(scenario refcounts_put_index)
def main [
  1:address:num <- new number:type
  2:address:array:address:num <- new {(address number): type}, 3
  *2:address:array:address:num <- put-index *2:address:array:address:num, 0, 1:address:num
]
+run: {1: ("address" "number")} <- new {number: "type"}
+mem: incrementing refcount of 1000: 0 -> 1
+run: {2: ("address" "array" "address" "number")} <- new {(address number): "type"}, {3: "literal"}
+mem: incrementing refcount of 1002: 0 -> 1
+run: {2: ("address" "array" "address" "number"), "lookup": ()} <- put-index {2: ("address" "array" "address" "number"), "lookup": ()}, {0: "literal"}, {1: ("address" "number")}
# put-index increments refcount
+mem: incrementing refcount of 1000: 1 -> 2

:(after "Write Memory in PUT_INDEX in Run")
update_any_refcounts(element, value);

:(scenario refcounts_maybe_convert)
exclusive-container foo [
  x:num
  p:address:num
]
def main [
  1:address:num <- new number:type
  2:foo <- merge 1/p, 1:address:num
  4:address:num, 5:bool <- maybe-convert 2:foo, 1:variant/p
]
+run: {1: ("address" "number")} <- new {number: "type"}
+mem: incrementing refcount of 1000: 0 -> 1
# merging in an address increments refcount
+run: {2: "foo"} <- merge {1: "literal", "p": ()}, {1: ("address" "number")}
+mem: incrementing refcount of 1000: 1 -> 2
+run: {4: ("address" "number")}, {5: "boolean"} <- maybe-convert {2: "foo"}, {1: "variant", "p": ()}
# maybe-convert increments refcount on success
+mem: incrementing refcount of 1000: 2 -> 3

:(after "Write Memory in Successful MAYBE_CONVERT")
// TODO: double-check data here as well
vector<double> data;
for (int i = 0;  i < size_of(product);  ++i)
  data.push_back(get_or_insert(Memory, base_address+/*skip tag*/1+i));
update_any_refcounts(product, data);

//:: manage refcounts in instructions that copy multiple locations at a time

:(scenario refcounts_copy_nested)
container foo [
  x:address:num  # address inside container
]
def main [
  1:address:num <- new number:type
  2:address:foo <- new foo:type
  *2:address:foo <- put *2:address:foo, x:offset, 1:address:num
  3:foo <- copy *2:address:foo
]
+transform: compute address offsets for container foo
+transform: checking container foo, element 0
+transform: address at offset 0
+run: {1: ("address" "number")} <- new {number: "type"}
+mem: incrementing refcount of 1000: 0 -> 1
+run: {2: ("address" "foo"), "lookup": ()} <- put {2: ("address" "foo"), "lookup": ()}, {x: "offset"}, {1: ("address" "number")}
+mem: incrementing refcount of 1000: 1 -> 2
# copying a container increments refcounts of any contained addresses
+run: {3: "foo"} <- copy {2: ("address" "foo"), "lookup": ()}
+mem: incrementing refcount of 1000: 2 -> 3

:(after "End type_tree Definition")
struct address_element_info {
  int offset;  // where inside a container type (after flattening nested containers!) the address lies
  const type_tree* payload_type;  // all the information we need to compute sizes of items inside an address inside a container. Doesn't need to be a full-scale reagent, since an address inside a container can never be an array, and arrays are the only type that need to know their location to compute their size.
  address_element_info(int o, const type_tree* p) {
    offset = o;
    payload_type = p;
  }
  address_element_info(const address_element_info& other) {
    offset = other.offset;
    payload_type = other.payload_type ? new type_tree(*other.payload_type) : NULL;
  }
  ~address_element_info() {
    if (payload_type) {
      delete payload_type;
      payload_type = NULL;
    }
  }
  address_element_info& operator=(const address_element_info& other) {
    offset = other.offset;
    if (payload_type) delete payload_type;
    payload_type = other.payload_type ? new type_tree(*other.payload_type) : NULL;
    return *this;
  }
};

// For exclusive containers we might sometimes have an address at some offset
// if some other offset has a specific tag. This struct encapsulates such
// guards.
struct tag_condition_info {
  int offset;
  int tag;
  tag_condition_info(int o, int t) :offset(o), tag(t) {}
};

:(before "End container_metadata Fields")
// a list of facts of the form:
//
//  IF offset o1 has tag t2 AND offset o2 has tag t2 AND .., THEN
//    for all address_element_infos:
//      you need to update refcounts for the address at offset pointing to a payload of type payload_type (just in case we need to abandon something in the process)
map<set<tag_condition_info>, set<address_element_info> > address;
:(code)
bool operator<(const set<tag_condition_info>& a, const set<tag_condition_info>& b) {
  if (a.size() != b.size()) return a.size() < b.size();
  for (set<tag_condition_info>::const_iterator pa = a.begin(), pb = b.begin();  pa != a.end();  ++pa, ++pb) {
    if (pa->offset != pb->offset) return pa->offset < pb->offset;
    if (pa->tag != pb->tag) return pa->tag < pb->tag;
  }
  return false;  // equal
}
bool operator<(const tag_condition_info& a, const tag_condition_info& b) {
  if (a.offset != b.offset) return a.offset < b.offset;
  if (a.tag != b.tag) return a.tag < b.tag;
  return false;  // equal
}
bool operator<(const set<address_element_info>& a, const set<address_element_info>& b) {
  if (a.size() != b.size()) return a.size() < b.size();
  for (set<address_element_info>::const_iterator pa = a.begin(), pb = b.begin();  pa != a.end();  ++pa, ++pb) {
    if (pa->offset != pb->offset) return pa->offset < pb->offset;
  }
  return false;  // equal
}
bool operator<(const address_element_info& a, const address_element_info& b) {
  if (a.offset != b.offset) return a.offset < b.offset;
  return false;  // equal
}

//: populate metadata.address in a separate transform, because it requires
//: already knowing the sizes of all types

:(after "Transform.push_back(compute_container_sizes)")
Transform.push_back(compute_container_address_offsets);  // idempotent
:(code)
void compute_container_address_offsets(const recipe_ordinal r) {
  recipe& caller = get(Recipe, r);
  trace(9992, "transform") << "--- compute address offsets for " << caller.name << end();
  for (int i = 0;  i < SIZE(caller.steps);  ++i) {
    instruction& inst = caller.steps.at(i);
    trace(9993, "transform") << "- compute address offsets for " << to_string(inst) << end();
    for (int i = 0;  i < SIZE(inst.ingredients);  ++i)
      compute_container_address_offsets(inst.ingredients.at(i));
    for (int i = 0;  i < SIZE(inst.products);  ++i)
      compute_container_address_offsets(inst.products.at(i));
  }
}

void compute_container_address_offsets(reagent& r) {
  if (is_literal(r) || is_dummy(r)) return;
  compute_container_address_offsets(r.type);
  if (contains_key(Container_metadata, r.type))
    r.metadata = get(Container_metadata, r.type);
}

// the recursive structure of this function needs to exactly match
// compute_container_sizes
void compute_container_address_offsets(const type_tree* type) {
  if (!type) return;
  if (!type->atom) {
    assert(type->left->atom);
    if (type->left->name == "address") {
      compute_container_address_offsets(type->right);
    }
    else if (type->left->name == "array") {
      const type_tree* element_type = type->right;
      // hack: support both array:num:3 and array:address:num
      if (!element_type->atom && element_type->right && element_type->right->atom && is_integer(element_type->right->name))
        element_type = element_type->left;
      compute_container_address_offsets(element_type);
    }
    // End compute_container_address_offsets Non-atom Cases
  }
  if (!contains_key(Type, root_type(type)->value)) return;  // error raised elsewhere
  type_info& info = get(Type, root_type(type)->value);
  if (info.kind == CONTAINER) {
    compute_container_address_offsets(info, type);
  }
  if (info.kind == EXCLUSIVE_CONTAINER) {
    compute_exclusive_container_address_offsets(info, type);
  }
}

void compute_container_address_offsets(const type_info& container_info, const type_tree* full_type) {
  container_metadata& metadata = get(Container_metadata, full_type);
  if (!metadata.address.empty()) return;
  trace(9994, "transform") << "compute address offsets for container " << container_info.name << end();
  append_addresses(0, full_type, metadata.address, set<tag_condition_info>());
}

void compute_exclusive_container_address_offsets(const type_info& exclusive_container_info, const type_tree* full_type) {
  container_metadata& metadata = get(Container_metadata, full_type);
  trace(9994, "transform") << "compute address offsets for exclusive container " << exclusive_container_info.name << end();
  for (int tag = 0;  tag < SIZE(exclusive_container_info.elements);  ++tag) {
    set<tag_condition_info> key;
    key.insert(tag_condition_info(/*tag is at offset*/0, tag));
    append_addresses(/*skip tag offset*/1, variant_type(full_type, tag).type, metadata.address, key);
  }
}

void append_addresses(int base_offset, const type_tree* type, map<set<tag_condition_info>, set<address_element_info> >& out, const set<tag_condition_info>& key) {
  if (is_mu_address(type)) {
    get_or_insert(out, key).insert(address_element_info(base_offset, new type_tree(*type->right)));
    return;
  }
  const type_tree* root = root_type(type);
  const type_info& info = get(Type, root->value);
  if (info.kind == CONTAINER) {
    for (int curr_index = 0, curr_offset = base_offset;  curr_index < SIZE(info.elements);  ++curr_index) {
      trace(9993, "transform") << "checking container " << root->name << ", element " << curr_index << end();
      reagent/*copy*/ element = element_type(type, curr_index);  // not root
      // Compute Container Address Offset(element)
      if (is_mu_address(element)) {
        trace(9993, "transform") << "address at offset " << curr_offset << end();
        get_or_insert(out, key).insert(address_element_info(curr_offset, new type_tree(*element.type->right)));
        ++curr_offset;
      }
      else if (is_mu_container(element)) {
        append_addresses(curr_offset, element.type, out, key);
        curr_offset += size_of(element);
      }
      else if (is_mu_exclusive_container(element)) {
        const type_tree* element_root_type = root_type(element.type);
        const type_info& element_info = get(Type, element_root_type->value);
        for (int tag = 0;  tag < SIZE(element_info.elements);  ++tag) {
          set<tag_condition_info> new_key = key;
          new_key.insert(tag_condition_info(curr_offset, tag));
          if (!contains_key(out, new_key))
            append_addresses(curr_offset+/*skip tag*/1, variant_type(element.type, tag).type, out, new_key);
        }
        curr_offset += size_of(element);
      }
      else {
        // non-address primitive
        ++curr_offset;
      }
    }
  }
  else if (info.kind == EXCLUSIVE_CONTAINER) {
    for (int tag = 0;  tag < SIZE(info.elements);  ++tag) {
      set<tag_condition_info> new_key = key;
      new_key.insert(tag_condition_info(base_offset, tag));
      if (!contains_key(out, new_key))
        append_addresses(base_offset+/*skip tag*/1, variant_type(type, tag).type, out, new_key);
    }
  }
}

int payload_size(const type_tree* type) {
  assert(type->name == "address");
  assert(type->right->name != "array");
  return size_of(type->right) + /*refcount*/1;
}

//: for the following unit tests we'll do the work of the transform by hand

:(before "End Unit Tests")
void test_container_address_offsets_empty() {
  int old_size = SIZE(Container_metadata);
  // define a container with no addresses
  reagent r("x:point");
  compute_container_sizes(r);  // need to first pre-populate the metadata
  // scan
  compute_container_address_offsets(r);
  // global metadata contains just the entry for foo
  // no entries for non-container types or other junk
  CHECK_EQ(SIZE(Container_metadata)-old_size, 1);
  // the reagent we scanned knows it has no addresses
  CHECK(r.metadata.address.empty());
  // the global table contains an identical entry
  CHECK(contains_key(Container_metadata, r.type));
  CHECK(get(Container_metadata, r.type).address.empty());
  // compute_container_address_offsets creates no new entries
  CHECK_EQ(SIZE(Container_metadata)-old_size, 1);
}

void test_container_address_offsets() {
  int old_size = SIZE(Container_metadata);
  // define a container with an address at offset 0 that we have the size for
  run("container foo [\n"
      "  x:address:num\n"
      "]\n");
  reagent r("x:foo");
  compute_container_sizes(r);  // need to first pre-populate the metadata
  // scan
  compute_container_address_offsets(r);
  // global metadata contains just the entry for foo
  // no entries for non-container types or other junk
  CHECK_EQ(SIZE(Container_metadata)-old_size, 1);
  // the reagent we scanned knows it has an address at offset 0
  CHECK_EQ(SIZE(r.metadata.address), 1);
  CHECK(contains_key(r.metadata.address, set<tag_condition_info>()));
  const set<address_element_info>& address_offsets = get(r.metadata.address, set<tag_condition_info>());  // unconditional for containers
  CHECK_EQ(SIZE(address_offsets), 1);
  CHECK_EQ(address_offsets.begin()->offset, 0);
  CHECK(address_offsets.begin()->payload_type->atom);
  CHECK_EQ(address_offsets.begin()->payload_type->name, "number");
  // the global table contains an identical entry
  CHECK(contains_key(Container_metadata, r.type));
  const set<address_element_info>& address_offsets2 = get(get(Container_metadata, r.type).address, set<tag_condition_info>());
  CHECK_EQ(SIZE(address_offsets2), 1);
  CHECK_EQ(address_offsets2.begin()->offset, 0);
  CHECK(address_offsets2.begin()->payload_type->atom);
  CHECK_EQ(address_offsets2.begin()->payload_type->name, "number");
  // compute_container_address_offsets creates no new entries
  CHECK_EQ(SIZE(Container_metadata)-old_size, 1);
}

void test_container_address_offsets_2() {
  int old_size = SIZE(Container_metadata);
  // define a container with an address at offset 1 that we have the size for
  run("container foo [\n"
      "  x:num\n"
      "  y:address:num\n"
      "]\n");
  reagent r("x:foo");
  compute_container_sizes(r);  // need to first pre-populate the metadata
  // global metadata contains just the entry for foo
  // no entries for non-container types or other junk
  CHECK_EQ(SIZE(Container_metadata)-old_size, 1);
  // scan
  compute_container_address_offsets(r);
  // compute_container_address_offsets creates no new entries
  CHECK_EQ(SIZE(Container_metadata)-old_size, 1);
  // the reagent we scanned knows it has an address at offset 1
  CHECK_EQ(SIZE(r.metadata.address), 1);
  CHECK(contains_key(r.metadata.address, set<tag_condition_info>()));
  const set<address_element_info>& address_offsets = get(r.metadata.address, set<tag_condition_info>());
  CHECK_EQ(SIZE(address_offsets), 1);
  CHECK_EQ(address_offsets.begin()->offset, 1);  //
  CHECK(address_offsets.begin()->payload_type->atom);
  CHECK_EQ(address_offsets.begin()->payload_type->name, "number");
  // the global table contains an identical entry
  CHECK(contains_key(Container_metadata, r.type));
  const set<address_element_info>& address_offsets2 = get(get(Container_metadata, r.type).address, set<tag_condition_info>());
  CHECK_EQ(SIZE(address_offsets2), 1);
  CHECK_EQ(address_offsets2.begin()->offset, 1);  //
  CHECK(address_offsets2.begin()->payload_type->atom);
  CHECK_EQ(address_offsets2.begin()->payload_type->name, "number");
}

void test_container_address_offsets_nested() {
  int old_size = SIZE(Container_metadata);
  // define a container with a nested container containing an address
  run("container foo [\n"
      "  x:address:num\n"
      "  y:num\n"
      "]\n"
      "container bar [\n"
      "  p:point\n"
      "  f:foo\n"  // nested container containing address
      "]\n");
  reagent r("x:bar");
  compute_container_sizes(r);  // need to first pre-populate the metadata
  // global metadata contains entries for bar and included types: point and foo
  // no entries for non-container types or other junk
  CHECK_EQ(SIZE(Container_metadata)-old_size, 3);
  // scan
  compute_container_address_offsets(r);
  // the reagent we scanned knows it has an address at offset 2
  CHECK_EQ(SIZE(r.metadata.address), 1);
  CHECK(contains_key(r.metadata.address, set<tag_condition_info>()));
  const set<address_element_info>& address_offsets = get(r.metadata.address, set<tag_condition_info>());
  CHECK_EQ(SIZE(address_offsets), 1);
  CHECK_EQ(address_offsets.begin()->offset, 2);  //
  CHECK(address_offsets.begin()->payload_type->atom);
  CHECK_EQ(address_offsets.begin()->payload_type->name, "number");
  // the global table also knows its address offset
  CHECK(contains_key(Container_metadata, r.type));
  const set<address_element_info>& address_offsets2 = get(get(Container_metadata, r.type).address, set<tag_condition_info>());
  CHECK_EQ(SIZE(address_offsets2), 1);
  CHECK_EQ(address_offsets2.begin()->offset, 2);  //
  CHECK(address_offsets2.begin()->payload_type->atom);
  CHECK_EQ(address_offsets2.begin()->payload_type->name, "number");
  // compute_container_address_offsets creates no new entries
  CHECK_EQ(SIZE(Container_metadata)-old_size, 3);
}

void test_container_address_offsets_from_address() {
  int old_size = SIZE(Container_metadata);
  // define a container with an address at offset 0
  run("container foo [\n"
      "  x:address:num\n"
      "]\n");
  reagent r("x:address:foo");
  compute_container_sizes(r);  // need to first pre-populate the metadata
  // global metadata contains just the entry for foo
  // no entries for non-container types or other junk
  CHECK_EQ(SIZE(Container_metadata)-old_size, 1);
  // scan an address to the container
  compute_container_address_offsets(r);
  // compute_container_address_offsets creates no new entries
  CHECK_EQ(SIZE(Container_metadata)-old_size, 1);
  // scanning precomputed metadata for the container
  reagent container("x:foo");
  CHECK(contains_key(Container_metadata, container.type));
  const set<address_element_info>& address_offsets2 = get(get(Container_metadata, container.type).address, set<tag_condition_info>());
  CHECK_EQ(SIZE(address_offsets2), 1);
  CHECK_EQ(address_offsets2.begin()->offset, 0);
  CHECK(address_offsets2.begin()->payload_type->atom);
  CHECK_EQ(address_offsets2.begin()->payload_type->name, "number");
}

void test_container_address_offsets_from_array() {
  int old_size = SIZE(Container_metadata);
  // define a container with an address at offset 0
  run("container foo [\n"
      "  x:address:num\n"
      "]\n");
  reagent r("x:array:foo");
  compute_container_sizes(r);  // need to first pre-populate the metadata
  // global metadata contains just the entry for foo
  // no entries for non-container types or other junk
  CHECK_EQ(SIZE(Container_metadata)-old_size, 1);
  // scan an array of the container
  compute_container_address_offsets(r);
  // compute_container_address_offsets creates no new entries
  CHECK_EQ(SIZE(Container_metadata)-old_size, 1);
  // scanning precomputed metadata for the container
  reagent container("x:foo");
  CHECK(contains_key(Container_metadata, container.type));
  const set<address_element_info>& address_offsets2 = get(get(Container_metadata, container.type).address, set<tag_condition_info>());
  CHECK_EQ(SIZE(address_offsets2), 1);
  CHECK_EQ(address_offsets2.begin()->offset, 0);
  CHECK(address_offsets2.begin()->payload_type->atom);
  CHECK_EQ(address_offsets2.begin()->payload_type->name, "number");
}

void test_container_address_offsets_from_address_to_array() {
  int old_size = SIZE(Container_metadata);
  // define a container with an address at offset 0
  run("container foo [\n"
      "  x:address:num\n"
      "]\n");
  reagent r("x:address:array:foo");
  compute_container_sizes(r);  // need to first pre-populate the metadata
  // global metadata contains just the entry for foo
  // no entries for non-container types or other junk
  CHECK_EQ(SIZE(Container_metadata)-old_size, 1);
  // scan an address to an array of the container
  compute_container_address_offsets(r);
  // compute_container_address_offsets creates no new entries
  CHECK_EQ(SIZE(Container_metadata)-old_size, 1);
  // scanning precomputed metadata for the container
  reagent container("x:foo");
  CHECK(contains_key(Container_metadata, container.type));
  const set<address_element_info>& address_offsets2 = get(get(Container_metadata, container.type).address, set<tag_condition_info>());
  CHECK_EQ(SIZE(address_offsets2), 1);
  CHECK_EQ(address_offsets2.begin()->offset, 0);
  CHECK(address_offsets2.begin()->payload_type->atom);
  CHECK_EQ(address_offsets2.begin()->payload_type->name, "number");
}

void test_container_address_offsets_from_static_array() {
  int old_size = SIZE(Container_metadata);
  // define a container with an address at offset 0
  run("container foo [\n"
      "  x:address:num\n"
      "]\n");
  reagent r("x:array:foo:10");
  compute_container_sizes(r);  // need to first pre-populate the metadata
  // global metadata contains just the entry for foo
  // no entries for non-container types or other junk
  CHECK_EQ(SIZE(Container_metadata)-old_size, 1);
  // scan a static array of the container
  compute_container_address_offsets(r);
  // compute_container_address_offsets creates no new entries
  CHECK_EQ(SIZE(Container_metadata)-old_size, 1);
  // scanning precomputed metadata for the container
  reagent container("x:foo");
  CHECK(contains_key(Container_metadata, container.type));
  const set<address_element_info>& address_offsets2 = get(get(Container_metadata, container.type).address, set<tag_condition_info>());
  CHECK_EQ(SIZE(address_offsets2), 1);
  CHECK_EQ(address_offsets2.begin()->offset, 0);
  CHECK(address_offsets2.begin()->payload_type->atom);
  CHECK_EQ(address_offsets2.begin()->payload_type->name, "number");
}

void test_container_address_offsets_from_address_to_static_array() {
  int old_size = SIZE(Container_metadata);
  // define a container with an address at offset 0
  run("container foo [\n"
      "  x:address:num\n"
      "]\n");
  reagent r("x:address:array:foo:10");
  compute_container_sizes(r);  // need to first pre-populate the metadata
  // global metadata contains just the entry for foo
  // no entries for non-container types or other junk
  CHECK_EQ(SIZE(Container_metadata)-old_size, 1);
  // scan an address to a static array of the container
  compute_container_address_offsets(r);
  // compute_container_address_offsets creates no new entries
  CHECK_EQ(SIZE(Container_metadata)-old_size, 1);
  // scanning precomputed metadata for the container
  reagent container("x:foo");
  CHECK(contains_key(Container_metadata, container.type));
  const set<address_element_info>& address_offsets2 = get(get(Container_metadata, container.type).address, set<tag_condition_info>());
  CHECK_EQ(SIZE(address_offsets2), 1);
  CHECK_EQ(address_offsets2.begin()->offset, 0);
  CHECK(address_offsets2.begin()->payload_type->atom);
  CHECK_EQ(address_offsets2.begin()->payload_type->name, "number");
}

void test_container_address_offsets_from_repeated_address_and_array_types() {
  int old_size = SIZE(Container_metadata);
  // define a container with an address at offset 0
  run("container foo [\n"
      "  x:address:num\n"
      "]\n");
  // scan a deep nest of 'address' and 'array' types modifying a container
  reagent r("x:address:array:address:address:array:foo:10");
  compute_container_sizes(r);  // need to first pre-populate the metadata
  // global metadata contains just the entry for foo
  // no entries for non-container types or other junk
  CHECK_EQ(SIZE(Container_metadata)-old_size, 1);
  compute_container_address_offsets(r);
  // compute_container_address_offsets creates no new entries
  CHECK_EQ(SIZE(Container_metadata)-old_size, 1);
  // scanning precomputed metadata for the container
  reagent container("x:foo");
  CHECK(contains_key(Container_metadata, container.type));
  const set<address_element_info>& address_offsets2 = get(get(Container_metadata, container.type).address, set<tag_condition_info>());
  CHECK_EQ(SIZE(address_offsets2), 1);
  CHECK_EQ(address_offsets2.begin()->offset, 0);
  CHECK(address_offsets2.begin()->payload_type->atom);
  CHECK_EQ(address_offsets2.begin()->payload_type->name, "number");
}

//: use metadata.address to update refcounts within containers, arrays and
//: exclusive containers

:(before "End Increment Refcounts(canonized_x)")
if (is_mu_container(canonized_x) || is_mu_exclusive_container(canonized_x)) {
  const container_metadata& metadata = get(Container_metadata, canonized_x.type);
  for (map<set<tag_condition_info>, set<address_element_info> >::const_iterator p = metadata.address.begin();  p != metadata.address.end();  ++p) {
    if (!all_match(data, p->first)) continue;
    for (set<address_element_info>::const_iterator info = p->second.begin();  info != p->second.end();  ++info)
      increment_refcount(data.at(info->offset));
  }
}

:(before "End Decrement Refcounts(canonized_x)")
if (is_mu_container(canonized_x) || is_mu_exclusive_container(canonized_x)) {
  trace(9999, "mem") << "need to read old value of '" << to_string(canonized_x) << "' to figure out what refcounts to decrement" << end();
  // read from canonized_x but without canonizing again
  // todo: inline without running canonize all over again
  reagent/*copy*/ tmp = canonized_x;
  tmp.properties.push_back(pair<string, string_tree*>("raw", NULL));
  vector<double> data = read_memory(tmp);
  trace(9999, "mem") << "done reading old value of '" << to_string(canonized_x) << "'" << end();
  const container_metadata& metadata = get(Container_metadata, canonized_x.type);
  for (map<set<tag_condition_info>, set<address_element_info> >::const_iterator p = metadata.address.begin();  p != metadata.address.end();  ++p) {
    if (!all_match(data, p->first)) continue;
    for (set<address_element_info>::const_iterator info = p->second.begin();  info != p->second.end();  ++info)
      decrement_refcount(get_or_insert(Memory, canonized_x.value + info->offset), info->payload_type, size_of(info->payload_type)+/*refcount*/1);
  }
}

:(code)
bool all_match(const vector<double>& data, const set<tag_condition_info>& conditions) {
  for (set<tag_condition_info>::const_iterator p = conditions.begin();  p != conditions.end();  ++p) {
    if (data.at(p->offset) != p->tag)
      return false;
  }
  return true;
}

:(scenario refcounts_put_container)
container foo [
  a:bar  # contains an address
]
container bar [
  x:address:num
]
def main [
  1:address:num <- new number:type
  2:bar <- merge 1:address:num
  3:address:foo <- new foo:type
  *3:address:foo <- put *3:address:foo, a:offset, 2:bar
]
+run: {1: ("address" "number")} <- new {number: "type"}
+mem: incrementing refcount of 1000: 0 -> 1
+run: {2: "bar"} <- merge {1: ("address" "number")}
+mem: incrementing refcount of 1000: 1 -> 2
+run: {3: ("address" "foo"), "lookup": ()} <- put {3: ("address" "foo"), "lookup": ()}, {a: "offset"}, {2: "bar"}
# put increments refcount inside container
+mem: incrementing refcount of 1000: 2 -> 3

:(scenario refcounts_put_index_array)
container bar [
  x:address:num
]
def main [
  1:address:num <- new number:type
  2:bar <- merge 1:address:num
  3:address:array:bar <- new bar:type, 3
  *3:address:array:bar <- put-index *3:address:array:bar, 0, 2:bar
]
+run: {1: ("address" "number")} <- new {number: "type"}
+mem: incrementing refcount of 1000: 0 -> 1
+run: {2: "bar"} <- merge {1: ("address" "number")}
+mem: incrementing refcount of 1000: 1 -> 2
+run: {3: ("address" "array" "bar"), "lookup": ()} <- put-index {3: ("address" "array" "bar"), "lookup": ()}, {0: "literal"}, {2: "bar"}
# put-index increments refcount inside container
+mem: incrementing refcount of 1000: 2 -> 3

:(scenario refcounts_maybe_convert_container)
exclusive-container foo [
  a:num
  b:bar  # contains an address
]
container bar [
  x:address:num
]
def main [
  1:address:num <- new number:type
  2:bar <- merge 1:address:num
  3:foo <- merge 1/b, 2:bar
  5:bar, 6:bool <- maybe-convert 3:foo, 1:variant/b
]
+run: {1: ("address" "number")} <- new {number: "type"}
+mem: incrementing refcount of 1000: 0 -> 1
+run: {2: "bar"} <- merge {1: ("address" "number")}
+mem: incrementing refcount of 1000: 1 -> 2
+run: {3: "foo"} <- merge {1: "literal", "b": ()}, {2: "bar"}
+mem: incrementing refcount of 1000: 2 -> 3
+run: {5: "bar"}, {6: "boolean"} <- maybe-convert {3: "foo"}, {1: "variant", "b": ()}
+mem: incrementing refcount of 1000: 3 -> 4

:(scenario refcounts_copy_doubly_nested)
container foo [
  a:bar  # no addresses
  b:curr  # contains addresses
]
container bar [
  x:num
  y:num
]
container curr [
  x:num
  y:address:num  # address inside container inside container
]
def main [
  1:address:num <- new number:type
  2:address:curr <- new curr:type
  *2:address:curr <- put *2:address:curr, 1:offset/y, 1:address:num
  3:address:foo <- new foo:type
  *3:address:foo <- put *3:address:foo, 1:offset/b, *2:address:curr
  4:foo <- copy *3:address:foo
]
+transform: compute address offsets for container foo
+transform: checking container foo, element 1
+transform: address at offset 3
+run: {1: ("address" "number")} <- new {number: "type"}
+mem: incrementing refcount of 1000: 0 -> 1
# storing an address in a container updates its refcount
+run: {2: ("address" "curr"), "lookup": ()} <- put {2: ("address" "curr"), "lookup": ()}, {1: "offset", "y": ()}, {1: ("address" "number")}
+mem: incrementing refcount of 1000: 1 -> 2
# storing a container in a container updates refcounts of any contained addresses
+run: {3: ("address" "foo"), "lookup": ()} <- put {3: ("address" "foo"), "lookup": ()}, {1: "offset", "b": ()}, {2: ("address" "curr"), "lookup": ()}
+mem: incrementing refcount of 1000: 2 -> 3
# copying a container containing a container containing an address updates refcount
+run: {4: "foo"} <- copy {3: ("address" "foo"), "lookup": ()}
+mem: incrementing refcount of 1000: 3 -> 4

:(scenario refcounts_copy_exclusive_container_within_container)
container foo [
  a:num
  b:bar
]
exclusive-container bar [
  x:num
  y:num
  z:address:num
]
def main [
  1:address:num <- new number:type
  2:bar <- merge 0/x, 34
  3:foo <- merge 12, 2:bar
  5:bar <- merge 1/y, 35
  6:foo <- merge 13, 5:bar
  8:bar <- merge 2/z, 1:address:num
  9:foo <- merge 14, 8:bar
  11:foo <- copy 9:foo
]
+run: {1: ("address" "number")} <- new {number: "type"}
+mem: incrementing refcount of 1000: 0 -> 1
# no change while merging items of other types
+run: {8: "bar"} <- merge {2: "literal", "z": ()}, {1: ("address" "number")}
+mem: incrementing refcount of 1000: 1 -> 2
+run: {9: "foo"} <- merge {14: "literal"}, {8: "bar"}
+mem: incrementing refcount of 1000: 2 -> 3
+run: {11: "foo"} <- copy {9: "foo"}
+mem: incrementing refcount of 1000: 3 -> 4

:(scenario refcounts_copy_container_within_exclusive_container)
exclusive-container foo [
  a:num
  b:bar
]
container bar [
  x:num
  y:num
  z:address:num
]
def main [
  1:address:num <- new number:type
  2:foo <- merge 0/a, 34
  6:foo <- merge 0/a, 35
  10:bar <- merge 2/x, 15/y, 1:address:num
  13:foo <- merge 1/b, 10:bar
  17:foo <- copy 13:foo
]
+run: {1: ("address" "number")} <- new {number: "type"}
+mem: incrementing refcount of 1000: 0 -> 1
# no change while merging items of other types
+run: {10: "bar"} <- merge {2: "literal", "x": ()}, {15: "literal", "y": ()}, {1: ("address" "number")}
+mem: incrementing refcount of 1000: 1 -> 2
+run: {13: "foo"} <- merge {1: "literal", "b": ()}, {10: "bar"}
+mem: incrementing refcount of 1000: 2 -> 3
+run: {17: "foo"} <- copy {13: "foo"}
+mem: incrementing refcount of 1000: 3 -> 4

:(scenario refcounts_copy_exclusive_container_within_exclusive_container)
exclusive-container foo [
  a:num
  b:bar
]
exclusive-container bar [
  x:num
  y:address:num
]
def main [
  1:address:num <- new number:type
  10:foo <- merge 1/b, 1/y, 1:address:num
  20:foo <- copy 10:foo
]
+run: {1: ("address" "number")} <- new {number: "type"}
+mem: incrementing refcount of 1000: 0 -> 1
# no change while merging items of other types
+run: {10: "foo"} <- merge {1: "literal", "b": ()}, {1: "literal", "y": ()}, {1: ("address" "number")}
+mem: incrementing refcount of 1000: 1 -> 2
+run: {20: "foo"} <- copy {10: "foo"}
+mem: incrementing refcount of 1000: 2 -> 3

:(scenario refcounts_copy_array_within_container)
container foo [
  x:address:array:num
]
def main [
  1:address:array:num <- new number:type, 3
  2:foo <- merge 1:address:array:num
  3:address:array:num <- new number:type, 5
  2:foo <- merge 3:address:array:num
]
+run: {1: ("address" "array" "number")} <- new {number: "type"}, {3: "literal"}
+mem: incrementing refcount of 1000: 0 -> 1
+run: {2: "foo"} <- merge {1: ("address" "array" "number")}
+mem: incrementing refcount of 1000: 1 -> 2
+run: {2: "foo"} <- merge {3: ("address" "array" "number")}
+mem: decrementing refcount of 1000: 2 -> 1

:(scenario refcounts_handle_exclusive_containers_with_different_tags)
container foo1 [
  x:address:num
  y:num
]
container foo2 [
  x:num
  y:address:num
]
exclusive-container bar [
  a:foo1
  b:foo2
]
def main [
  1:address:num <- copy 12000/unsafe  # pretend allocation
  *1:address:num <- copy 34
  2:bar <- merge 0/foo1, 1:address:num, 97
  5:address:num <- copy 13000/unsafe  # pretend allocation
  *5:address:num <- copy 35
  6:bar <- merge 1/foo2, 98, 5:address:num
  2:bar <- copy 6:bar
]
+run: {2: "bar"} <- merge {0: "literal", "foo1": ()}, {1: ("address" "number")}, {97: "literal"}
+mem: incrementing refcount of 12000: 1 -> 2
+run: {6: "bar"} <- merge {1: "literal", "foo2": ()}, {98: "literal"}, {5: ("address" "number")}
+mem: incrementing refcount of 13000: 1 -> 2
+run: {2: "bar"} <- copy {6: "bar"}
+mem: incrementing refcount of 13000: 2 -> 3
+mem: decrementing refcount of 12000: 2 -> 1

:(code)
bool is_mu_container(const reagent& r) {
  return is_mu_container(r.type);
}
bool is_mu_container(const type_tree* type) {
  if (!type) return false;
  // End is_mu_container(type) Special-cases
  if (type->value == 0) return false;
  type_info& info = get(Type, type->value);
  return info.kind == CONTAINER;
}

bool is_mu_exclusive_container(const reagent& r) {
  return is_mu_exclusive_container(r.type);
}
bool is_mu_exclusive_container(const type_tree* type) {
  if (!type) return false;
  // End is_mu_exclusive_container(type) Special-cases
  if (type->value == 0) return false;
  type_info& info = get(Type, type->value);
  return info.kind == EXCLUSIVE_CONTAINER;
}
generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2024-11-30 10:04:48 +0000