#include <stdio.h>
+#define __STDC_FORMAT_MACROS
+#include <inttypes.h>
#include "model.h"
#include "action.h"
#include "clockvector.h"
#include "common.h"
-ModelAction::ModelAction(action_type_t type, memory_order order, void *loc, int value)
+ModelAction::ModelAction(action_type_t type, memory_order order, void *loc, uint64_t value) :
+ type(type),
+ order(order),
+ location(loc),
+ value(value),
+ reads_from(NULL),
+ cv(NULL)
{
Thread *t = thread_current();
- ModelAction *act = this;
-
- act->type = type;
- act->order = order;
- act->location = loc;
- act->tid = t->get_id();
- act->value = value;
- act->seq_number = model->get_next_seq_num();
-
- cv = NULL;
+ this->tid = t->get_id();
+ this->seq_number = model->get_next_seq_num();
}
ModelAction::~ModelAction()
bool ModelAction::is_write() const
{
- return type == ATOMIC_WRITE;
+ return type == ATOMIC_WRITE || type == ATOMIC_INIT;
}
bool ModelAction::is_rmw() const
return type == ATOMIC_RMW;
}
+bool ModelAction::is_initialization() const
+{
+ return type == ATOMIC_INIT;
+}
+
bool ModelAction::is_acquire() const
{
switch (order) {
// Different locations commute
if (!same_var(act))
return false;
-
+
// Explore interleavings of seqcst writes to guarantee total order
// of seq_cst operations that don't commute
if (is_write() && is_seqcst() && act->is_write() && act->is_seqcst())
return false;
}
-void ModelAction::create_cv(ModelAction *parent)
+void ModelAction::create_cv(const ModelAction *parent)
{
ASSERT(cv == NULL);
cv = new ClockVector(NULL, this);
}
-void ModelAction::read_from(ModelAction *act)
+void ModelAction::read_from(const ModelAction *act)
{
ASSERT(cv);
if (act->is_release() && this->is_acquire())
cv->merge(act->cv);
+ reads_from = act;
value = act->value;
}
* @return true if this action's thread has synchronized with act's thread
* since the execution of act, false otherwise.
*/
-bool ModelAction::happens_before(ModelAction *act)
+bool ModelAction::happens_before(const ModelAction *act) const
{
return act->cv->synchronized_since(this);
}
-void ModelAction::print(void)
+void ModelAction::print(void) const
{
const char *type_str;
switch (this->type) {
case THREAD_CREATE:
type_str = "thread create";
break;
+ case THREAD_START:
+ type_str = "thread start";
+ break;
case THREAD_YIELD:
type_str = "thread yield";
break;
case ATOMIC_RMW:
type_str = "atomic rmw";
break;
+ case ATOMIC_INIT:
+ type_str = "init atomic";
+ break;
default:
type_str = "unknown type";
}
- printf("(%3d) Thread: %-2d Action: %-13s MO: %d Loc: %14p Value: %d",
+ printf("(%3d) Thread: %-2d Action: %-13s MO: %d Loc: %14p Value: %-12" PRIu64,
seq_number, id_to_int(tid), type_str, order, location, value);
+ if (reads_from)
+ printf(" Rf: %d", reads_from->get_seq_number());
if (cv) {
printf("\t");
cv->print();