C++ MARK函数代码示例

struct listnode * list_add(t_list list, void *data){
	MARK();
	struct listnode * node = (struct listnode *)link_addnew((t_link)list,sizeof(struct listnode));
	MARK();
	node->data = data;
	return node;
}

static PyObject *extract_list(struct pointerlist *root, int values)
{
    PyObject *retval;
    int i;
    unsigned int *kdata;
    import_array();
    MARK();
    XX(print_pointerlist(root));
    if (root->size > 0) {
	quicksort(root->lst, 0, root->size-1);
    }
    MARK();
    if (values) {
	retval = PyList_New(0);
	for (i = 0; i < root->size; i++) {
	    PyList_Append(retval, root->lst[i]->self);
	    XX(PyObject_Print(root->lst[i]->self, stdout, 0));
	    XX(printf(" at address %p\n", root->lst[i]->self));
	}
	MARK();
	return retval;
    }
    retval = PyArray_FromDims(1, (int*)&(root->size), PyArray_INT);
    kdata = (unsigned int *) ((PyArrayObject*) retval)->data;
    for (i = 0; i < root->size; i++) {
	kdata[i] = root->lst[i]->key;
    }
    MARK();
    return PyArray_Return((PyArrayObject*) retval);
}

int main(int argc) {
  if (argc<2) p=true;
  BM bm;
  bm.generate();

  aos::fill(aos::a,bm.values0,1024);
  aos::fill(aos::b,bm.values1,1024);
  aos::fill(aos::c,bm.values2,1024);
  aosP::fill(aosP::a,bm.values0,1024);
  aosP::fill(aosP::b,bm.values1,1024);
  aosP::fill(aosP::c,bm.values2,1024);
  memcpy(bm.values0,soa4::m1,4*4096);
  memcpy(bm.values1,soa4::m2,4*4096);
  memcpy(bm.values2,soa4::m3,4*4096);
  memcpy(bm.values0,soa3::m1,12*1096);
  memcpy(bm.values1,soa3::m2,12*1096);
  memcpy(bm.values2,soa3::m3,12*1096);
  memcpy(bm.values0,soaP::m1,4*4096);
  memcpy(bm.values1,soaP::m2,4*4096);
  memcpy(bm.values2,soaP::m3,4*4096);

  MARK(bm,aosTest);
  MARK(bm,parTest);
  MARK(bm,soa4Test);
  MARK(bm,soa3Test);
  MARK(bm,soaPTest);


  return 0;
}

static int dfs(Agnode_t * n, Agedge_t * link, int warn)
{
    Agedge_t *e;
    Agedge_t *f;
    Agraph_t *g = agrootof(n);

    MARK(n) = 1;

    for (e = agfstin(g, n); e; e = f) {
	f = agnxtin(g, e);
	if (e == link)
	    continue;
	if (MARK(agtail(e)))
	    agdelete(g, e);
    }

    for (e = agfstout(g, n); e; e = agnxtout(g, e)) {
	if (MARK(aghead(e))) {
	    if (!warn) {
		warn++;
		fprintf(stderr,
			"warning: %s has cycle(s), transitive reduction not unique\n",
			agnameof(g));
		fprintf(stderr, "cycle involves edge %s -> %s\n",
			agnameof(agtail(e)), agnameof(aghead(e)));
	    }
	} else
	    warn = dfs(aghead(e), AGOUT2IN(e), warn);
    }

    MARK(n) = 0;
    return warn;
}

int find_first_step(sh_int src, sh_int target, int stay_zone)
{
  int curr_dir;
  sh_int curr_room;
  int src_zone = ((src - (src % 100)) / 100);
  int target_zone = ((target - (target % 100)) / 100);

  if (src < 0 || src > top_of_world || target < 0 || target > top_of_world) {
    stderr_log("Illegal value passed to find_first_step (graph.c)");
    return BFS_ERROR;
  }

  /* dez 19980805
   if ((src_zone != target_zone && stay_zone == 1) || stay_zone == 2) {
   return BFS_NO_PATH;
   }
   */
  if (src_zone != target_zone && stay_zone == 1) {
    return BFS_NO_PATH;
  }

  if (src == target) {
    return BFS_ALREADY_THERE;
  }

  /* clear marks first */
  for (curr_room = 0; curr_room <= top_of_world; curr_room++) {
    UNMARK(curr_room);
  }

  MARK(src);

  /* first, enqueue the first steps, saving which direction we're going. */
  for (curr_dir = 0; curr_dir < NUM_OF_DIRS; curr_dir++) {
    if (VALID_EDGE(src, curr_dir)) {
      MARK(TOROOM(src, curr_dir));
      bfs_enqueue(TOROOM(src, curr_dir), curr_dir);
    }
  }
  /* now, do the classic BFS. */
  while (queue_head) {
    if (queue_head->room == target) {
      curr_dir = queue_head->dir;
      bfs_clear_queue();
      return curr_dir;
    } else {
      for (curr_dir = 0; curr_dir < NUM_OF_DIRS; curr_dir++) {
        if (VALID_EDGE(queue_head->room, curr_dir)) {
          MARK(TOROOM(queue_head->room, curr_dir));
          bfs_enqueue(TOROOM(queue_head->room, curr_dir), queue_head->dir);
        }
      }
      bfs_dequeue();
    }
  }

  return BFS_NO_PATH;
}

void ComplexObject_mark(YoyoObject* ptr) {
	ptr->marked = true;
	ComplexObject* obj = (ComplexObject*) ptr;

	MARK(obj->base);
	for (size_t i = 0; i < obj->mixin_count; i++) {
		MARK(obj->mixins[i]);
	}
}

/* ********************************************************************
   This routines sorts a[0] ... a[n-1] using the fact that
   in their common prefix, after offset characters, there is a 
   suffix whose rank is known. In this routine we call this suffix anchor
   (and we denote its position and rank with anchor_pos and anchor_rank 
   respectively) but it is not necessarily an anchor (=does not necessarily 
   starts at position multiple of Anchor_dist) since this function is
   called by pseudo_anchor_sort().
   The routine works by scanning the suffixes before and after the anchor
   in order to find (and mark) those which are suffixes of a[0] ... a[n-1].
   After that, the ordering of a[0] ... a[n-1] is derived with a sigle
   scan of the marked suffixes.
   ******************************************************************** */
static void general_anchor_sort(Int32 *a, Int32 n, 
                         Int32 anchor_pos, Int32 anchor_rank, Int32 offset)
{
  int integer_cmp(const void *, const void *);
  Int32 sb, lo, hi;
  Int32 curr_lo, curr_hi, to_be_found, i,j;
  Int32 item; 
  void *ris;

  assert(Sa[anchor_rank]==anchor_pos);
  /* ---------- get bucket of anchor ---------- */
  sb = Get_small_bucket(anchor_pos);
  lo = BUCKET_FIRST(sb);
  hi = BUCKET_LAST(sb);
  assert(sb==Get_small_bucket(a[0]+offset));
  // ------ sort pointers a[0] ... a[n-1] as plain integers
  qsort(a,n, sizeof(Int32), integer_cmp);

  // ------------------------------------------------------------------
  // now we scan the bucket containing the anchor in search of suffixes
  // corresponding to the ones we have to sort. When we find one of
  // such suffixes we mark it. We go on untill n sfx's have been marked 
  // ------------------------------------------------------------------
  curr_hi = curr_lo = anchor_rank;

  // the anchor must correspond to a suffix to be sorted
  #if DEBUG
  item = anchor_pos-offset;
  assert(bsearch(&item,a,n,sizeof(Int32), integer_cmp));
  #endif

  MARK(curr_lo);
  // scan suffixes preceeding and following the anchor
  for(to_be_found=n-1;to_be_found>0; ) {
    // invariant: the next positions to check are curr_lo-1 and curr_hi+1
    assert(curr_lo > lo || curr_hi < hi);
    while (curr_lo > lo) {
      item = Sa[--curr_lo]-offset;
      ris = bsearch(&item,a,n,sizeof(Int32), integer_cmp);
      if(ris)	{MARK(curr_lo); to_be_found--;}
      else	break;
    }
    while (curr_hi < hi) {
      item = Sa[++curr_hi]-offset;
      ris = bsearch(&item,a,n,sizeof(Int32), integer_cmp);
      if(ris)	{MARK(curr_hi); to_be_found--;}
      else      break;
    }
  }
  // sort a[] using the marked suffixes
  for(j=0, i=curr_lo;i<=curr_hi;i++) 
    if(ISMARKED(i)) {
      UNMARK(i);
      a[j++] = Sa[i] - offset;
    }
  assert(j==n);  // make sure n items have been sorted
}

static inline int
add (struct S *a, struct S *b, int c)
{
  *a->x += *b->x;
  a->y += b->y;
 l1: MARK (add_l1);
  u[c + 0]++;
  a = (struct S *) 0;
  u[c + 1]++;
  a = b;
 l2: MARK (add_l2);
  u[c + 2]++;
  return *a->x + *b->x + a->y + b->y;
}

static int
bar (int i)
{
  int j = i;
  int k;
  struct S p[2] = { { &i, i * 2 }, { &j, j * 2 } };
 l1: MARK (bar_l1);
  k = add (&p[0], &p[1], 0);
 l2: MARK (bar_l2);
  p[0].x = &j;
  p[1].x = &i;
  k += add (&p[0], &p[1], 3);
 l3: MARK (bar_l3);
  return i + j + k;
}

static Block* new_block (int digits)
     /* Allocate a new block. */
{
  Block *b;
  b = MALLOC (Block, 1);

  MARK (b, lia_magic);
  b->storage =  MALLOC (Lia, digits);
  /* >>> BZERO (b->storage,    Lia, digits);  * not needed? */
  MARK (b->storage, lia_magic);
  b->first = 0;
  b->last = digits - 1;
  b->next = NULL;
  return (b);
}

Lia_pool_adt lia_pool_open (int block_size)
     /* Opens a Lia pool and returns a pointer (ADT) to it.
        A "Lia pool" is essentially a list of blocks of n == block_size
        Lia digits.  This list provides memory space for lia_pool_store().
        Initially, there is only one block allocated.  If this block gets
        filled up, a new one is allocated. */
{
  Pool *p;
  p = MALLOC (Pool, 1);
  MARK (p, lia_magic);
  p->magic = Magic_number;
  p->block_digits = Max (block_size, MIN_BLOCK_SIZE) * lia_common.max;
  p->block_list = new_block (p->block_digits);
  p->longs = 0;
  p->digits = 0;
  if (is_virgin)
    {
      lia_load (a_zero, 0);
      is_virgin = FALSE;
    }
#ifdef DO_TYPECHECKING
  minp = (Pool *) Min (minp, p);
  maxp = (Pool *) Max (maxp, p);
#endif
  return ((Lia_pool_adt) p);
}

int l_remove(node_t *head, key_t key) {
    node_t *pred, *item, *sitem;
    while (TRUE) {
        if (!l_find(&pred, &item, head, key)) {
            trace("remove item failed %d\n", key);
            return FALSE;
        }
        sitem = STRIP_MARK(item);
        node_t *inext = sitem->next;
        /* 先标记再删除 */
        if (!CAS(&sitem->next, inext, MARK(inext))) {
            trace("cas item %p mark failed\n", sitem->next);
            continue;
        }
        sitem->val = NULL_VALUE;
        int tag = GET_TAG(pred->next) + 1;
        if (CAS(&pred->next, item, TAG(STRIP_MARK(sitem->next), tag))) {
            trace("remove item %p success\n", item);
            haz_defer_free(sitem);
            return TRUE;
        }
        trace("cas item remove item %p failed\n", item);
    }
    return FALSE;
}

void FXRbId::markfunc(FXId* self){
  FXRbObject::markfunc(self);
  if(self){
    FXRbGcMark(self->getApp());
    if(self->getUserData()) MARK(self->getUserData());
    }
  }

static int gfs_fill_super_info(struct gfs_super_info *si, u32 ino)
{
	struct gfs_inode_info *inode;
	struct gfs_super *raw;
	struct buffer_head *bh;
	int err;
	mutex_init(&si->s_mutex);
	
	inode = gfs_iget_info(si->s_vfs_sb, ino);
	PDEBUG("ino=%d PTR_ERR=%li\n", (int) ino, (long)PTR_ERR(inode));
	if (IS_ERR(inode)) 
		return PTR_ERR(inode);
	
	si->s_super_inode = inode;
	bh = get_inode_data(inode,0);
	if(!bh)
		return -EIO;
	MARK();	
	raw = (struct gfs_super *) (bh->b_data + sizeof(struct gfs_inode));
	
	err = init_super_from_raw(si, raw);

	put_inode_data(inode,0);
	return err;
}

void remove_child(Agraph_t * graph, Agnode_t * node)
{
    Agedge_t *edge;
    Agedge_t *nexte;

    /* Avoid cycles */
    if MARKED
	(node) return;
    MARK(node);

    /* Skip nodes with more than one parent */
    edge = agfstin(node);
    if (edge && (agnxtin(edge) != NULL)) {
	UNMARK(node);
	return;
    }

    /* recursively remove children */
    for (edge = agfstout(node); edge; edge = nexte) {
	nexte = agnxtout(edge);
	if (aghead(edge) != node) {
	    if (verbose)
		fprintf(stderr, "Processing descendant: %s\n",
			agnameof(aghead(edge)));
	    remove_child(graph, aghead(edge));
	    agdeledge(edge);
	}
    }

    agdelnode(node);
    return;
}