node: do not use static member variable

[model-checker.git] / nodestack.cc

diff --git a/nodestack.cc b/nodestack.cc
index df5fc633ac37aba0b6df464f51be996ab8403eb6..74e6a11a43bbeacab4cc0e3dc39a9ee0dc279760 100644 (file)
--- a/nodestack.cc
+++ b/nodestack.cc
@@ -3,15 +3,12 @@
 #include "common.h"
 #include "model.h"
 
-int Node::total_nodes = 0;
-
 Node::Node(ModelAction *act, int nthreads)
        : action(act),
        num_threads(nthreads),
        explored_children(num_threads),
        backtrack(num_threads)
 {
-       total_nodes++;
 }
 
 Node::~Node()
@@ -94,8 +91,10 @@ static void clear_node_list(node_list_t *list, node_list_t::iterator start,
 }
 
 NodeStack::NodeStack()
+       : total_nodes(0)
 {
        node_list.push_back(new Node());
+       total_nodes++;
        iter = node_list.begin();
 }
 
@@ -136,6 +135,7 @@ ModelAction * NodeStack::explore_action(ModelAction *act)
                /* Record action */
                get_head()->explore_child(act);
                node_list.push_back(new Node(act, model->get_num_threads()));
+               total_nodes++;
                iter++;
        }
        return (*iter)->get_action();