location(loc),
value(value),
reads_from(NULL),
- reads_from_promise(NULL),
last_fence_release(NULL),
node(NULL),
seq_number(ACTION_INITIAL_CLOCK),
ASSERT(is_read());
if (reads_from)
return reads_from->get_write_value();
- else if (reads_from_promise)
- return reads_from_promise->get_value();
return VALUE_NONE; /* Only for new actions with no reads-from */
}
ASSERT(act);
reads_from = act;
- reads_from_promise = NULL;
if (act->is_uninitialized()) { // WL
uint64_t val = *((uint64_t *) location);
}
}
-/**
- * Set this action's read-from promise
- * @param promise The promise to read from
- */
-void ModelAction::set_read_from_promise(Promise *promise)
-{
- ASSERT(is_read());
- reads_from_promise = promise;
- reads_from = NULL;
-}
-
/**
* Synchronize the current thread with the thread corresponding to the
* ModelAction parameter.
if (is_read()) {
if (reads_from)
model_print(" %-3d", reads_from->get_seq_number());
- else if (reads_from_promise) {
- int idx = reads_from_promise->get_index();
- if (idx >= 0)
- model_print(" P%-2d", idx);
- else
- model_print(" P? ");
- } else
+ else
model_print(" ? ");
}
if (cv) {
if (is_read()) {
if (reads_from)
hash ^= reads_from->get_seq_number();
- else if (reads_from_promise)
- hash ^= reads_from_promise->get_index();
hash ^= get_reads_from_value();
}
return hash;
return false;
}
-/**
- * @brief Checks the NodeStack to see if a Promise is in our may-read-from set
- * @param promise The Promise to check for
- * @return True if the Promise is found; false otherwise
- */
-bool ModelAction::may_read_from(const Promise *promise) const
-{
- for (int i = 0; i < node->get_read_from_promise_size(); i++)
- if (node->get_read_from_promise(i) == promise)
- return true;
- return false;
-}
-
/**
* Only valid for LOCK, TRY_LOCK, UNLOCK, and WAIT operations.
* @return The mutex operated on by this action, if any; otherwise NULL