C++ (Cpp) bdd_reorder_ready Examples

Example #1

File: kernel.c Project: RCambier/EmbeddedAndVerification

int bdd_makenode(unsigned int level, int low, int high)
{
   register BddNode *node;
   register unsigned int hash;
   register int res;

#ifdef CACHESTATS
   bddcachestats.uniqueAccess++;
#endif
   
      /* check whether childs are equal */
   if (low == high)
      return low;

      /* Try to find an existing node of this kind */
   hash = NODEHASH(level, low, high);
   res = bddnodes[hash].hash;

   while(res != 0)
   {
      if (LEVEL(res) == level  &&  LOW(res) == low  &&  HIGH(res) == high)
      {
#ifdef CACHESTATS
	 bddcachestats.uniqueHit++;
#endif
	 return res;
      }

      res = bddnodes[res].next;
#ifdef CACHESTATS
      bddcachestats.uniqueChain++;
#endif
   }
   
      /* No existing node -> build one */
#ifdef CACHESTATS
   bddcachestats.uniqueMiss++;
#endif

      /* Any free nodes to use ? */
   if (bddfreepos == 0)
   {
      if (bdderrorcond)
	 return 0;
      
         /* Try to allocate more nodes */
      bdd_gbc();

      if ((bddnodesize-bddfreenum) >= usednodes_nextreorder  &&
	   bdd_reorder_ready())
      {
	 longjmp(bddexception,1);
      }

      if ((bddfreenum*100) / bddnodesize <= minfreenodes)
      {
	 bdd_noderesize(1);
	 hash = NODEHASH(level, low, high);
      }

         /* Panic if that is not possible */
      if (bddfreepos == 0)
      {
	 bdd_error(BDD_NODENUM);
	 bdderrorcond = abs(BDD_NODENUM);
	 return 0;
      }
   }

      /* Build new node */
   res = bddfreepos;
   bddfreepos = bddnodes[bddfreepos].next;
   bddfreenum--;
   bddproduced++;
   
   node = &bddnodes[res];
   LEVELp(node) = level;
   LOWp(node) = low;
   HIGHp(node) = high;
   
      /* Insert node */
   node->next = bddnodes[hash].hash;
   bddnodes[hash].hash = res;

   return res;
}

Example #2

File: kernel.c Project: UGent-HES/javabdd

int bdd_makenode(unsigned int level, int low, int high)
{
   register unsigned int hash;
   register int res;

#ifdef CACHESTATS
   bddcachestats.uniqueAccess++;
#endif
   
      /* check whether childs are equal */
   if (low == high)
      return low;

      /* Try to find an existing node of this kind */
   hash = NODEHASH(level, low, high);
   res = HASH(hash);

#if defined(SMALL_NODES)
   if (res != 0) {
       int m1 = (level << LEV_LPOS) | low;
       int m2 = ((level << (LEV_HPOS-LEV_LBITS)) & LEV_HMASK) | high;
       do {
           if (bddnodes[res].low_llev == m1 && bddnodes[res].high_hlev == m2) {
#ifdef CACHESTATS
               bddcachestats.uniqueHit++;
#endif
               return res;
           }
           res = NEXT(res);
#ifdef CACHESTATS
           bddcachestats.uniqueChain++;
#endif
       } while (res != 0);
   }
#else // SMALL_NODES
   while(res != 0)
   {
      if (LEVEL(res) == level  &&  LOW(res) == low  &&  HIGH(res) == high)
      {
#ifdef CACHESTATS
	 bddcachestats.uniqueHit++;
#endif
	 return res;
      }

      res = NEXT(res);
#ifdef CACHESTATS
      bddcachestats.uniqueChain++;
#endif
   }
#endif // SMALL_NODES
   
      /* No existing node -> build one */
#ifdef CACHESTATS
   bddcachestats.uniqueMiss++;
#endif

      /* Any free nodes to use ? */
   if (bddfreepos == 0)
   {
      if (bdderrorcond)
	 return 0;
      
         /* Try to allocate more nodes */
      bdd_gbc();

      if ((bddnodesize-bddfreenum) >= usednodes_nextreorder  &&
	   bdd_reorder_ready())
      {
	 longjmp(bddexception,1);
      }

      if ((bddfreenum*100) / bddnodesize <= minfreenodes)
      {
	 bdd_noderesize(1);
	 hash = NODEHASH(level, low, high);
      }

         /* Panic if that is not possible */
      if (bddfreepos == 0)
      {
	 bdd_error(BDD_NODENUM);
	 bdderrorcond = abs(BDD_NODENUM);
	 return 0;
      }
   }

      /* Build new node */
   res = bddfreepos;
   bddfreepos = NEXT(bddfreepos);
   bddfreenum--;
   bddproduced++;
   
   {
       int next = HASH(hash);
       CREATE_NODE(res, level, low, high, next);
       /* Insert node */
       SETHASH(hash, res);
   }

   return res;
}