#include "clockvector.h"
#include "common.h"
#include "threads.h"
+#include "nodestack.h"
#define ACTION_INITIAL_CLOCK 0
-ModelAction::ModelAction(action_type_t type, memory_order order, void *loc, uint64_t value) :
+/**
+ * @brief Construct a new ModelAction
+ *
+ * @param type The type of action
+ * @param order The memory order of this action. A "don't care" for non-ATOMIC
+ * actions (e.g., THREAD_* or MODEL_* actions).
+ * @param loc The location that this action acts upon
+ * @param value (optional) A value associated with the action (e.g., the value
+ * read or written). Defaults to a given macro constant, for debugging purposes.
+ * @param thread (optional) The Thread in which this action occurred. If NULL
+ * (default), then a Thread is assigned according to the scheduler.
+ */
+ModelAction::ModelAction(action_type_t type, memory_order order, void *loc,
+ uint64_t value, Thread *thread) :
type(type),
order(order),
location(loc),
value(value),
reads_from(NULL),
+ node(NULL),
seq_number(ACTION_INITIAL_CLOCK),
- cv(NULL)
+ cv(NULL),
+ sleep_flag(false)
{
- Thread *t = thread_current();
+ Thread *t = thread ? thread : thread_current();
this->tid = t->get_id();
}
seq_number = num;
}
+bool ModelAction::is_relseq_fixup() const
+{
+ return type == MODEL_FIXUP_RELSEQ;
+}
+
bool ModelAction::is_mutex_op() const
{
return type == ATOMIC_LOCK || type == ATOMIC_TRYLOCK || type == ATOMIC_UNLOCK;
* @param act is the action to consider exploring a reordering.
* @return tells whether we have to explore a reordering.
*/
-bool ModelAction::is_synchronizing(const ModelAction *act) const
+bool ModelAction::could_synchronize_with(const ModelAction *act) const
{
//Same thread can't be reordered
if (same_thread(act))
// 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())
+ if ((is_write() || act->is_write()) && is_seqcst() && act->is_seqcst())
return true;
// Explore synchronizing read/write pairs
if (is_read() && is_acquire() && act->is_write() && act->is_release())
return true;
- if (is_write() && is_release() && act->is_read() && act->is_acquire())
- return true;
// Otherwise handle by reads_from relation
return false;
bool ModelAction::synchronize_with(const ModelAction *act) {
if (*this < *act && type != THREAD_JOIN && type != ATOMIC_LOCK)
return false;
- model->check_promises(cv, act->cv);
+ model->check_promises(act->get_tid(), cv, act->cv);
cv->merge(act->cv);
return true;
}
{
const char *type_str, *mo_str;
switch (this->type) {
+ case MODEL_FIXUP_RELSEQ:
+ type_str = "relseq fixup";
+ break;
case THREAD_CREATE:
type_str = "thread create";
break;
} else
printf("\n");
}
+
+/** @brief Print nicely-formatted info about this ModelAction */
+unsigned int ModelAction::hash() const
+{
+ unsigned int hash=(unsigned int) this->type;
+ hash^=((unsigned int)this->order)<<3;
+ hash^=seq_number<<5;
+ hash^=tid<<6;
+
+ if (is_read()) {
+ if (reads_from)
+ hash^=reads_from->get_seq_number();
+ }
+ return hash;
+}