experiment with exponential decay model

[c11tester.git] / predicate.cc

diff --git a/predicate.cc b/predicate.cc
index 4094b615514b48deee3caa34c98c73f6ebba4902..eb979f8868a9de8097ca5cbb6c4be24a0bbaa2f8 100644 (file)
--- a/predicate.cc
+++ b/predicate.cc
@@ -7,8 +7,11 @@ Predicate::Predicate(FuncInst * func_inst, bool is_entry, bool is_exit) :
        entry_predicate(is_entry),
        exit_predicate(is_exit),
        does_write(false),
+       depth(0),
+       weight(0),
        exploration_count(0),
-       failure_count(0),
+       store_visible_count(0),
+       total_checking_count(0),
        pred_expressions(16),
        children(),
        parent(NULL),
@@ -26,7 +29,7 @@ Predicate::~Predicate()
 
 unsigned int pred_expr_hash(struct pred_expr * expr)
 {
-        return (unsigned int)((uintptr_t)expr);
+       return (unsigned int)((uintptr_t)expr);
 }
 
 bool pred_expr_equal(struct pred_expr * p1, struct pred_expr * p2)
@@ -52,6 +55,28 @@ void Predicate::add_child(Predicate * child)
        children.push_back(child);
 }
 
+void Predicate::set_parent(Predicate * parent_pred)
+{
+       parent = parent_pred;
+       depth = parent_pred->get_depth() + 1;
+}
+
+void Predicate::set_exit(Predicate * exit_pred)
+{
+       exit = exit_pred;
+       exit_pred->add_pre_exit_predicate(this);
+}
+
+void Predicate::alloc_pre_exit_predicates()
+{
+       pre_exit_predicates = new ModelVector<Predicate *>();
+}
+
+void Predicate::add_pre_exit_predicate(Predicate * pred)
+{
+       pre_exit_predicates->push_back(pred);
+}
+
 void Predicate::copy_predicate_expr(Predicate * other)
 {
        PredExprSet * other_pred_expressions = other->get_pred_expressions();
@@ -64,6 +89,24 @@ void Predicate::copy_predicate_expr(Predicate * other)
        }
 }
 
+/* Return the single child branch of this predicate.
+ * Return NULL if this predicate has no children.
+ */
+Predicate * Predicate::get_single_child(FuncInst * inst)
+{
+       int size = children.size();
+       if (size == 0)
+               return NULL;
+
+       /* Should only have one child */
+       ASSERT(size == 1);
+       Predicate * child = children[0];
+
+       ASSERT(child->get_func_inst() == inst);
+
+       return child;
+}
+
 /* Evaluate predicate expressions against the given inst_act_map */
 ConcretePredicate * Predicate::evaluate(inst_act_map_t * inst_act_map, thread_id_t tid)
 {
@@ -75,20 +118,20 @@ ConcretePredicate * Predicate::evaluate(inst_act_map_t * inst_act_map, thread_id
                uint64_t value = 0;
 
                switch(ptr->token) {
-                       case NOPREDICATE:
-                               break;
-                       case EQUALITY:
-                               FuncInst * to_be_compared;
-                               ModelAction * last_act;
-
-                               to_be_compared = ptr->func_inst;
-                               last_act = inst_act_map->get(to_be_compared);
-                               value = last_act->get_reads_from_value();
-                               break;
-                       case NULLITY:
-                               break;
-                       default:
-                               break;
+               case NOPREDICATE:
+                       break;
+               case EQUALITY:
+                       FuncInst * to_be_compared;
+                       ModelAction * last_act;
+
+                       to_be_compared = ptr->func_inst;
+                       last_act = inst_act_map->get(to_be_compared);
+                       value = last_act->get_reads_from_value();
+                       break;
+               case NULLITY:
+                       break;
+               default:
+                       break;
                }
 
                concrete->add_expression(ptr->token, value, ptr->value);
@@ -99,7 +142,7 @@ ConcretePredicate * Predicate::evaluate(inst_act_map_t * inst_act_map, thread_id
 
 void Predicate::print_predicate()
 {
-       model_print("\"%p\" [shape=box, label=\"\n", this);
+       model_print("\"%p\" [shape=box, label=\"", this);
        if (entry_predicate) {
                model_print("entry node\"];\n");
                return;
@@ -110,42 +153,46 @@ void Predicate::print_predicate()
                return;
        }
 
-       func_inst->print();
+       model_print("depth: %u; weight: %g\n", depth, weight);
 
-       PredExprSetIter * it = pred_expressions.iterator();
+       func_inst->print();
 
        if (pred_expressions.getSize() == 0)
                model_print("predicate unset\n");
 
+       PredExprSetIter * it = pred_expressions.iterator();
        while (it->hasNext()) {
                struct pred_expr * expr = it->next();
                FuncInst * inst = expr->func_inst;
                switch (expr->token) {
-                       case NOPREDICATE:
-                               break;
-                       case EQUALITY:
-                               model_print("predicate token: equality, position: %s, value: %d\n", inst->get_position(), expr->value);
-                               break;
-                       case NULLITY:
-                               model_print("predicate token: nullity, value: %d\n", expr->value);
-                               break;
-                       default:
-                               model_print("unknown predicate token\n");
-                               break;
+               case NOPREDICATE:
+                       break;
+               case EQUALITY:
+                       model_print("predicate token: equality, position: %s, value: %d\n", inst->get_position(), expr->value);
+                       break;
+               case NULLITY:
+                       model_print("predicate token: nullity, value: %d\n", expr->value);
+                       break;
+               default:
+                       model_print("unknown predicate token\n");
+                       break;
                }
        }
 
        if (does_write) {
                model_print("Does write\n");
        }
-       model_print("Count: %d\n", exploration_count);
+
+       double prob = (double) store_visible_count / total_checking_count;
+       model_print("Total checks: %d, visible count: %d; prob: %f\n", total_checking_count, store_visible_count, prob);
+       model_print("Exploration count: %d", exploration_count);
        model_print("\"];\n");
 }
 
 void Predicate::print_pred_subtree()
 {
        print_predicate();
-       for (uint i = 0; i < children.size(); i++) {
+       for (uint i = 0;i < children.size();i++) {
                Predicate * child = children[i];
                child->print_pred_subtree();
                model_print("\"%p\" -> \"%p\"\n", this, child);