langviz/Node.cc

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Copyright (c) 2000-2014 Ericsson Telecom AB
   3 // All rights reserved. This program and the accompanying materials
   4 // are made available under the terms of the Eclipse Public License v1.0
   5 // which accompanies this distribution, and is available at
   6 // http://www.eclipse.org/legal/epl-v10.html
   7 ///////////////////////////////////////////////////////////////////////////////
   8 #include "Node.hh"
   9 #include "error.h"
  10 #include <stdio.h>
  11
  12 // =================================
  13 // ===== Node
  14 // =================================
  15
  16 int Node::counter=0;
  17 #ifdef MEMORY_DEBUG
  18 static Node *list_head = 0, *list_tail = 0;
  19 #endif
  20
  21 Node::Node()
  22 {
  23 #ifdef MEMORY_DEBUG
  24   prev_node = list_tail;
  25   next_node = 0;
  26   if (list_tail) list_tail->next_node = this;
  27   else list_head = this;
  28   list_tail = this;
  29 #endif
  30   counter++;
  31 }
  32
  33 Node::Node(const Node& p)
  34 {
  35 #ifdef MEMORY_DEBUG
  36   prev_node = list_tail;
  37   next_node = 0;
  38   if (list_tail) list_tail->next_node = this;
  39   else list_head = this;
  40   list_tail = this;
  41 #endif
  42   counter++;
  43 }
  44
  45 Node::~Node()
  46 {
  47   counter--;
  48 #ifdef MEMORY_DEBUG
  49   if (prev_node) prev_node->next_node = next_node;
  50   else list_head = next_node;
  51   if (next_node) next_node->prev_node = prev_node;
  52   else list_tail = prev_node;
  53 #endif
  54 }
  55
  56 void Node::chk_counter()
  57 {
  58   DEBUG(1, "Node::counter is %d", counter);
  59   if(counter)
  60     WARNING("%d nodes were not deleted."
  61             " Please send a bug report including"
  62             " the current input file(s).", counter);
  63 #ifdef MEMORY_DEBUG
  64   for(Node *iter = list_head; iter; iter = iter->next_node) {
  65     fprintf(stderr, "Undeleted node address: %p.\n", iter);
  66   }
  67   list_head = 0;
  68   list_tail = 0;
  69 #endif
  70 }
  71