#include "action.h"
#include "clockvector.h"
#include "common.h"
+#include "threads.h"
+
+#define ACTION_INITIAL_CLOCK 0
ModelAction::ModelAction(action_type_t type, memory_order order, void *loc, uint64_t value) :
type(type),
location(loc),
value(value),
reads_from(NULL),
+ seq_number(ACTION_INITIAL_CLOCK),
cv(NULL)
{
Thread *t = thread_current();
this->tid = t->get_id();
- this->seq_number = model->get_next_seq_num();
}
+/** @brief ModelAction destructor */
ModelAction::~ModelAction()
{
- if (cv)
- delete cv;
+ /**
+ * We can't free the clock vector:
+ * Clock vectors are snapshotting state. When we delete model actions,
+ * they are at the end of the node list and have invalid old clock
+ * vectors which have already been rolled back to an unallocated state.
+ */
+
+ /*
+ if (cv)
+ delete cv; */
}
-void ModelAction::copy_from_new(ModelAction *newaction) {
- seq_number=newaction->seq_number;
+void ModelAction::copy_from_new(ModelAction *newaction)
+{
+ seq_number = newaction->seq_number;
}
-bool ModelAction::is_mutex_op() const {
+void ModelAction::set_seq_number(modelclock_t num)
+{
+ ASSERT(seq_number == ACTION_INITIAL_CLOCK);
+ seq_number = num;
+}
+
+bool ModelAction::is_mutex_op() const
+{
return type == ATOMIC_LOCK || type == ATOMIC_TRYLOCK || type == ATOMIC_UNLOCK;
}
-bool ModelAction::is_lock() const {
+bool ModelAction::is_lock() const
+{
return type == ATOMIC_LOCK;
}
-bool ModelAction::is_unlock() const {
+bool ModelAction::is_unlock() const
+{
return type == ATOMIC_UNLOCK;
}
-bool ModelAction::is_trylock() const {
+bool ModelAction::is_trylock() const
+{
return type == ATOMIC_TRYLOCK;
}
-bool ModelAction::is_success_lock() const {
+bool ModelAction::is_success_lock() const
+{
return type == ATOMIC_LOCK || (type == ATOMIC_TRYLOCK && value == VALUE_TRYSUCCESS);
}
-bool ModelAction::is_failed_trylock() const {
+bool ModelAction::is_failed_trylock() const
+{
return (type == ATOMIC_TRYLOCK && value == VALUE_TRYFAILED);
}
}
void ModelAction::copy_typeandorder(ModelAction * act) {
- this->type=act->type;
- this->order=act->order;
+ this->type = act->type;
+ this->order = act->order;
}
/** This method changes an existing read part of an RMW action into either:
return act->cv->synchronized_since(this);
}
-void ModelAction::print(void) const
+/** @brief Print nicely-formatted info about this ModelAction */
+void ModelAction::print() const
{
const char *type_str, *mo_str;
switch (this->type) {