add copyright message

[model-checker.git] / nodestack.cc

diff --git a/nodestack.cc b/nodestack.cc
index dbc630739473bfa2fd0dbd44717ea2873c3c3bfd..b9142435c5267f276d10ed9b9c5c315801bfd6f7 100644 (file)
--- a/nodestack.cc
+++ b/nodestack.cc
@@ -27,6 +27,7 @@
 Node::Node(ModelAction *act, Node *par, int nthreads, Node *prevfairness) :
        read_from_status(READ_FROM_PAST),
        action(act),
+       uninit_action(NULL),
        parent(par),
        num_threads(nthreads),
        explored_children(num_threads),
@@ -95,7 +96,8 @@ int Node::get_yield_data(int tid1, int tid2) const {
 }
 
 void Node::update_yield(Scheduler * scheduler) {
-       yield_data=(int *) model_calloc(1, sizeof(int)*num_threads*num_threads);
+       if (yield_data==NULL)
+               yield_data=(int *) model_calloc(1, sizeof(int)*num_threads*num_threads);
        //handle base case
        if (parent == NULL) {
                for(int i = 0; i < num_threads*num_threads; i++) {
@@ -140,6 +142,8 @@ void Node::update_yield(Scheduler * scheduler) {
 Node::~Node()
 {
        delete action;
+       if (uninit_action)
+               delete uninit_action;
        if (enabled_array)
                model_free(enabled_array);
        if (yield_data)