#include "action.h"
#include "common.h"
#include "model.h"
+#include "threads.h"
/**
* @brief Node constructor
may_read_from(),
read_from_index(0),
future_values(),
- future_index(-1)
+ future_index(-1),
+ relseq_break_writes(),
+ relseq_break_index(0)
{
if (act) {
act->set_node(this);
if (prevfi) {
*fi=*prevfi;
}
- if (parent->enabled_array[i]) {
+ if (parent->enabled_array[i]==THREAD_ENABLED) {
fi->enabled_count++;
}
if (i==currtid) {
}
//Do window processing
if (prevfairness != NULL) {
- if (prevfairness -> parent->enabled_array[i])
+ if (prevfairness -> parent->enabled_array[i] == THREAD_ENABLED)
fi->enabled_count--;
if (i==prevtid) {
fi->turns--;
if (action)
delete action;
if (enabled_array)
- MYFREE(enabled_array);
+ model_free(enabled_array);
}
/** Prints debugging info for the ModelAction associated with this Node */
if (future_values[i].value == value) {
if (future_values[i].expiration>=expiration)
return false;
- if (future_index < i) {
+ if (future_index < ((int) i)) {
suitableindex=i;
}
}
* @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) >= ((int)future_values.size()));
}
/**
* Mark the appropriate backtracking information for exploring a thread choice.
* @param act The ModelAction to explore
*/
-void Node::explore_child(ModelAction *act, bool * is_enabled)
+void Node::explore_child(ModelAction *act, enabled_type_t * is_enabled)
{
if ( ! enabled_array )
- enabled_array=(bool *)model_malloc(sizeof(bool)*num_threads);
+ enabled_array=(enabled_type_t *)model_malloc(sizeof(enabled_type_t)*num_threads);
if (is_enabled != NULL)
- memcpy(enabled_array, is_enabled, sizeof(bool)*num_threads);
+ memcpy(enabled_array, is_enabled, sizeof(enabled_type_t)*num_threads);
else {
for(int i=0;i<num_threads;i++)
- enabled_array[i]=false;
+ enabled_array[i]=THREAD_DISABLED;
}
explore(act->get_tid());
bool Node::is_enabled(Thread *t)
{
int thread_id=id_to_int(t->get_id());
- return thread_id < num_threads && enabled_array[thread_id];
+ return thread_id < num_threads && (enabled_array[thread_id] != THREAD_DISABLED);
}
bool Node::is_enabled(thread_id_t tid)
{
int thread_id=id_to_int(tid);
- return thread_id < num_threads && enabled_array[thread_id];
+ return thread_id < num_threads && (enabled_array[thread_id] != THREAD_DISABLED);
+}
+
+bool Node::has_priority(thread_id_t tid)
+{
+ return fairness[id_to_int(tid)].priority;
}
/**
* @return The first element in future_values
*/
uint64_t Node::get_future_value() {
- ASSERT(future_index<future_values.size());
+ ASSERT(future_index<((int)future_values.size()));
return future_values[future_index].value;
}
modelclock_t Node::get_future_value_expiration() {
- ASSERT(future_index<future_values.size());
+ ASSERT(future_index<((int)future_values.size()));
return future_values[future_index].expiration;
}
bool Node::increment_read_from() {
DBG();
promises.clear();
- read_from_index++;
- return (read_from_index < may_read_from.size());
+ if (read_from_index < may_read_from.size()) {
+ read_from_index++;
+ return read_from_index < may_read_from.size();
+ }
+ return false;
}
/**
bool Node::increment_future_value() {
DBG();
promises.clear();
- future_index++;
- return (future_index < future_values.size());
+ if (future_index < ((int)future_values.size())) {
+ future_index++;
+ return (future_index < ((int)future_values.size()));
+ }
+ return false;
+}
+
+/**
+ * Add a write ModelAction to the set of writes that may break the release
+ * sequence. This is used during replay exploration of pending release
+ * sequences. This Node must correspond to a release sequence fixup action.
+ *
+ * @param write The write that may break the release sequence. NULL means we
+ * allow the release sequence to synchronize.
+ */
+void Node::add_relseq_break(const ModelAction *write)
+{
+ relseq_break_writes.push_back(write);
+}
+
+/**
+ * Get the write that may break the current pending release sequence,
+ * according to the replay / divergence pattern.
+ *
+ * @return A write that may break the release sequence. If NULL, that means
+ * the release sequence should not be broken.
+ */
+const ModelAction * Node::get_relseq_break()
+{
+ if (relseq_break_index < (int)relseq_break_writes.size())
+ return relseq_break_writes[relseq_break_index];
+ else
+ return NULL;
+}
+
+/**
+ * Increments the index into the relseq_break_writes set to explore the next
+ * item.
+ * @return Returns false if we have explored all values.
+ */
+bool Node::increment_relseq_break()
+{
+ DBG();
+ promises.clear();
+ if (relseq_break_index < ((int)relseq_break_writes.size())) {
+ relseq_break_index++;
+ return (relseq_break_index < ((int)relseq_break_writes.size()));
+ }
+ return false;
+}
+
+/**
+ * @return True if all writes that may break the release sequence have been
+ * explored
+ */
+bool Node::relseq_break_empty() {
+ return ((relseq_break_index + 1) >= ((int)relseq_break_writes.size()));
}
void Node::explore(thread_id_t tid)
explored_children[i] = true;
}
-NodeStack::NodeStack()
- : total_nodes(0)
+NodeStack::NodeStack() :
+ node_list(1, new Node()),
+ iter(0),
+ total_nodes(0)
{
- node_list.push_back(new Node());
total_nodes++;
- iter = 0;
}
NodeStack::~NodeStack()
{
+ for (unsigned int i = 0; i < node_list.size(); i++)
+ delete node_list[i];
}
void NodeStack::print()
/** Note: The is_enabled set contains what actions were enabled when
* act was chosen. */
-ModelAction * NodeStack::explore_action(ModelAction *act, bool * is_enabled)
+ModelAction * NodeStack::explore_action(ModelAction *act, enabled_type_t * is_enabled)
{
DBG();
{
/* Diverging from previous execution; clear out remainder of list */
unsigned int it=iter+numAhead;
+ for(unsigned int i=it;i<node_list.size();i++)
+ delete node_list[i];
node_list.resize(it);
}
projects / model-checker.git / blobdiff