* @param nthreads The number of threads which exist at this point in the
* execution trace.
*/
-Node::Node(ModelAction *act, Node *par, int nthreads)
+Node::Node(ModelAction *act, Node *par, int nthreads, bool *enabled)
: action(act),
parent(par),
num_threads(nthreads),
{
if (act)
act->set_node(this);
+ enabled_array=(bool *)MYMALLOC(sizeof(bool)*num_threads);
+ if (enabled)
+ memcpy(enabled_array, enabled, sizeof(bool)*num_threads);
+ else
+ for(int i=0;i<num_threads;i++)
+ enabled_array[i]=false;
}
/** @brief Node desctructor */
{
if (action)
delete action;
+ MYFREE(enabled_array);
}
/** Prints debugging info for the ModelAction associated with this Node */
* @param i is the promise index.
*/
void Node::set_promise(unsigned int i) {
- if (i>=promises.size())
- promises.resize(i+1,0);
- promises[i]=1;
+ if (i >= promises.size())
+ promises.resize(i + 1, PROMISE_IGNORE);
+ if (promises[i] == PROMISE_IGNORE)
+ promises[i] = PROMISE_UNFULFILLED;
}
/**
* @return true if the promise should be satisfied by the given model action.
*/
bool Node::get_promise(unsigned int i) {
- return (i<promises.size())&&(promises[i]==2);
+ return (i < promises.size()) && (promises[i] == PROMISE_FULFILLED);
}
/**
* @return true if we have a valid combination.
*/
bool Node::increment_promise() {
- for (unsigned int i=0;i<promises.size();i++) {
- if (promises[i]==1) {
- promises[i]=2;
- while (i>0) {
+ for (unsigned int i = 0; i < promises.size(); i++) {
+ if (promises[i] == PROMISE_UNFULFILLED) {
+ promises[i] = PROMISE_FULFILLED;
+ while (i > 0) {
i--;
- if (promises[i]==2)
- promises[i]=1;
+ if (promises[i] == PROMISE_FULFILLED)
+ promises[i] = PROMISE_UNFULFILLED;
}
return true;
}
* @return true if we have explored all promise combinations.
*/
bool Node::promise_empty() {
- for (unsigned int i=0;i<promises.size();i++)
- if (promises[i]==1)
+ for (unsigned int i = 0; i < promises.size();i++)
+ if (promises[i] == PROMISE_UNFULFILLED)
return false;
return true;
}
* Adds a value from a weakly ordered future write to backtrack to.
* @param value is the value to backtrack to.
*/
-bool Node::add_future_value(uint64_t value) {
- for(unsigned int i=0;i<future_values.size();i++)
- if (future_values[i]==value)
- return false;
+bool Node::add_future_value(uint64_t value, modelclock_t expiration) {
+ int suitableindex=-1;
+ for (unsigned int i = 0; i < future_values.size(); i++) {
+ if (future_values[i].value == value) {
+ if (future_values[i].expiration>=expiration)
+ return false;
+ if (future_index < i) {
+ suitableindex=i;
+ }
+ }
+ }
- future_values.push_back(value);
+ if (suitableindex!=-1) {
+ future_values[suitableindex].expiration=expiration;
+ return true;
+ }
+ struct future_value newfv={value, expiration};
+ future_values.push_back(newfv);
return true;
}
* @return true if the future_values set is empty.
*/
bool Node::future_value_empty() {
- return ((future_index+1)>=future_values.size());
+ return ((future_index + 1) >= future_values.size());
}
/**
* @return true if the readsfrom set is empty.
*/
bool Node::read_from_empty() {
- return ((read_from_index+1)>=may_read_from.size());
+ return ((read_from_index+1) >= may_read_from.size());
}
/**
bool Node::is_enabled(Thread *t)
{
- return id_to_int(t->get_id()) < num_threads;
+ int thread_id=id_to_int(t->get_id());
+ return thread_id < num_threads && enabled_array[thread_id];
}
/**
*/
uint64_t Node::get_future_value() {
ASSERT(future_index<future_values.size());
- return future_values[future_index];
+ return future_values[future_index].value;
+}
+
+modelclock_t Node::get_future_value_expiration() {
+ ASSERT(future_index<future_values.size());
+ return future_values[future_index].expiration;
+}
+
+
+int Node::get_read_from_size() {
+ return may_read_from.size();
+}
+
+const ModelAction * Node::get_read_from_at(int i) {
+ return may_read_from[i];
}
/**
* @return The first element in may_read_from
*/
const ModelAction * Node::get_read_from() {
- if (read_from_index<may_read_from.size())
+ if (read_from_index < may_read_from.size())
return may_read_from[read_from_index];
else
return NULL;
*/
bool Node::increment_read_from() {
read_from_index++;
- return (read_from_index<may_read_from.size());
+ return (read_from_index < may_read_from.size());
}
/**
*/
bool Node::increment_future_value() {
future_index++;
- return (future_index<future_values.size());
+ return (future_index < future_values.size());
}
void Node::explore(thread_id_t tid)
printf("............................................\n");
}
-ModelAction * NodeStack::explore_action(ModelAction *act)
+ModelAction * NodeStack::explore_action(ModelAction *act, bool * is_enabled)
{
DBG();