-#include <algorithm>
#include <cstring>
#include <stdlib.h>
-#include "model.h"
#include "action.h"
#include "clockvector.h"
#include "common.h"
+#include "threads-model.h"
/**
* Constructs a new ClockVector, given a parent ClockVector and a first
*/
ClockVector::ClockVector(ClockVector *parent, ModelAction *act)
{
- num_threads = model->get_num_threads();
- clock = (int *)MYMALLOC(num_threads * sizeof(int));
- memset(clock, 0, num_threads * sizeof(int));
+ ASSERT(act);
+ num_threads = int_to_id(act->get_tid()) + 1;
+ if (parent && parent->num_threads > num_threads)
+ num_threads = parent->num_threads;
+
+ clock = (modelclock_t *)snapshot_calloc(num_threads, sizeof(int));
if (parent)
- std::memcpy(clock, parent->clock, parent->num_threads * sizeof(int));
+ std::memcpy(clock, parent->clock, parent->num_threads * sizeof(modelclock_t));
- if (act)
- clock[id_to_int(act->get_tid())] = act->get_seq_number();
+ clock[id_to_int(act->get_tid())] = act->get_seq_number();
}
/** @brief Destructor */
ClockVector::~ClockVector()
{
- MYFREE(clock);
+ snapshot_free(clock);
}
/**
- * Merge a clock vector into this vector, using a pairwise vector. The
+ * Merge a clock vector into this vector, using a pairwise comparison. The
* resulting vector length will be the maximum length of the two being merged.
* @param cv is the ClockVector being merged into this vector.
*/
-void ClockVector::merge(ClockVector *cv)
+bool ClockVector::merge(const ClockVector *cv)
{
- int *clk = clock;
- bool resize = false;
-
ASSERT(cv != NULL);
-
+ bool changed = false;
if (cv->num_threads > num_threads) {
- resize = true;
- clk = (int *)MYMALLOC(cv->num_threads * sizeof(int));
- }
-
- /* Element-wise maximum */
- for (int i = 0; i < num_threads; i++)
- clk[i] = std::max(clock[i], cv->clock[i]);
-
- if (resize) {
+ clock = (modelclock_t *)snapshot_realloc(clock, cv->num_threads * sizeof(modelclock_t));
for (int i = num_threads; i < cv->num_threads; i++)
- clk[i] = cv->clock[i];
+ clock[i] = 0;
num_threads = cv->num_threads;
- MYFREE(clock);
}
- clock = clk;
+
+ /* Element-wise maximum */
+ for (int i = 0; i < cv->num_threads; i++)
+ if (cv->clock[i] > clock[i]) {
+ clock[i] = cv->clock[i];
+ changed = true;
+ }
+
+ return changed;
}
/**
* thread, false otherwise. That is, this function returns:
* <BR><CODE>act <= cv[act->tid]</CODE>
*/
-bool ClockVector::synchronized_since(ModelAction *act) const
+bool ClockVector::synchronized_since(const ModelAction *act) const
{
int i = id_to_int(act->get_tid());
return false;
}
+/** Gets the clock corresponding to a given thread id from the clock vector. */
+modelclock_t ClockVector::getClock(thread_id_t thread) {
+ int threadid = id_to_int(thread);
+
+ if (threadid < num_threads)
+ return clock[threadid];
+ else
+ return 0;
+}
+
/** @brief Formats and prints this ClockVector's data. */
void ClockVector::print() const
{
int i;
- printf("CV: (");
+ model_print("CV: (");
for (i = 0; i < num_threads; i++)
- printf("%2d%s", clock[i], (i == num_threads - 1) ? ")\n" : ", ");
+ model_print("%2u%s", clock[i], (i == num_threads - 1) ? ")\n" : ", ");
}