static xbt_dict_t trace_list = NULL;
-// a unique RngStream structure for everyone
-// FIXME : has to be created by someone
-static RngStream common_rng_stream = NULL;
-
XBT_INLINE tmgr_history_t tmgr_history_new(void)
{
tmgr_history_t h;
free(h);
}
-tmgr_trace_t tmgr_trace_new_from_generator(const char *id,
- probabilist_event_generator_t generator1,
- probabilist_event_generator_t generator2)
+
+/**
+ * \brief Create a #tmgr_trace_t from probabilist generators
+ *
+ * This trace will generate an infinite set of events.
+ * It needs two #probabilist_event_generator_t. The date when the event are
+ * triggered is directed by date_generator, and will be interpreted as seconds.
+ * The value of the event is set by value_generator. The value should be between
+ * 0 and 1.
+ *
+ * \param id The name of the trace
+ * \param date_generator The #probabilist_event_generator_t which generates the time
+ * between two events
+ * \param generator2 The #probabilist_event_generator_t which generates the value
+ * of each events.
+ * \return The new #tmgr_trace_t
+ */
+tmgr_trace_t tmgr_trace_generator_value(const char *id,
+ probabilist_event_generator_t date_generator,
+ probabilist_event_generator_t value_generator)
{
tmgr_trace_t trace = NULL;
- unsigned int id_hash;
- RngStream rng_stream = NULL;
-
- rng_stream = RngStream_CopyStream(common_rng_stream);
- id_hash = xbt_str_hash(id);
- RngStream_AdvanceState(rng_stream, 0, id_hash);
-
+
trace = xbt_new0(s_tmgr_trace_t, 1);
trace->type = e_trace_probabilist;
-
- trace->s_probabilist.event_generator[0] = generator1;
- trace->s_probabilist.event_generator[0]->rng_stream = rng_stream;
- tmgr_event_generator_next_value(trace->s_probabilist.event_generator[0]);
-
- //FIXME : may also be a parameter
- trace->s_probabilist.next_event = 0;
-
- if(generator2 == NULL) {
- trace->s_probabilist.event_generator[1] = generator1;
- } else {
- trace->s_probabilist.event_generator[1] = generator2;
- trace->s_probabilist.event_generator[1]->rng_stream = rng_stream;
- tmgr_event_generator_next_value(trace->s_probabilist.event_generator[1]);
- }
-
+
+ trace->s_probabilist.event_generator[0] = date_generator;
+ trace->s_probabilist.event_generator[1] = value_generator;
+ trace->s_probabilist.is_state_trace = 0;
+
return trace;
}
-probabilist_event_generator_t tmgr_event_generator_new_uniform(double alpha,
- double beta)
-{
+/**
+ * \brief Create a #tmgr_trace_t from probabilist generators
+ *
+ * This trace will generate an infinite set of events. Value of the events
+ * will be alternatively 0 and 1, so this should be used as a state trace.
+ *
+ * \param id The name of the trace
+ * \param date_generator The #probabilist_event_generator_t which generates the time
+ * between two events
+ * \param first_event_value Set the first event value
+ * \return The new #tmgr_trace_t
+ */
+tmgr_trace_t tmgr_trace_generator_state(const char *id,
+ probabilist_event_generator_t date_generator,
+ e_surf_resource_state_t first_event_value)
+{
+ tmgr_trace_t trace = NULL;
+
+ trace = xbt_new0(s_tmgr_trace_t, 1);
+ trace->type = e_trace_probabilist;
+
+ trace->s_probabilist.event_generator[0] = date_generator;
+ trace->s_probabilist.event_generator[1] = date_generator;
+ trace->s_probabilist.is_state_trace = 1;
+ trace->s_probabilist.next_event = (first_event_value==SURF_RESOURCE_ON ? 1 : 0);
+
+ return trace;
+}
+
+/**
+ * \brief Create a #tmgr_trace_t from probabilist generators
+ *
+ * This trace will generate an infinite set of events. Value of the events
+ * will be alternatively 0 and 1, so this should be used as a state trace.
+ *
+ * \param id The name of the trace
+ * \param avail_duration_generator The #probabilist_event_generator_t which
+ * set the duration of the available state, (ie 1 value)
+ * \param unavail_duration_generator The #probabilist_event_generator_t which
+ * set the duration of the unavailable state, (ie 0 value)
+ * \param first_event_value Set the first event value
+ * \return The new #tmgr_trace_t
+ */
+tmgr_trace_t tmgr_trace_generator_avail_unavail(const char *id,
+ probabilist_event_generator_t avail_duration_generator,
+ probabilist_event_generator_t unavail_duration_generator,
+ e_surf_resource_state_t first_event_value)
+{
+ tmgr_trace_t trace = NULL;
+
+ trace = xbt_new0(s_tmgr_trace_t, 1);
+ trace->type = e_trace_probabilist;
+
+ trace->s_probabilist.event_generator[0] = unavail_duration_generator;
+ trace->s_probabilist.event_generator[1] = avail_duration_generator;
+ trace->s_probabilist.is_state_trace = 1;
+ trace->s_probabilist.next_event = (first_event_value==SURF_RESOURCE_ON ? 1 : 0);
+
+ return trace;
+}
+
+/**
+ * \brief Create a new #probabilist_event_generator_t following the uniform distribution
+ *
+ * This generator will generate uniformly distributed random values between min and max
+ * The id is important : it controls the seed of the generator. So, generators with the
+ * same id and the same parameters will generate the same values.
+ *
+ * \param id The name of the generator
+ * \param min The minimal generated value
+ * \param max The maximal generated value
+ * \return a new #probabilist_event_generator_t
+ */
+probabilist_event_generator_t tmgr_event_generator_new_uniform(const char* id,
+ double min,
+ double max)
+{
probabilist_event_generator_t event_generator = NULL;
-
+ RngStream rng_stream = NULL;
+
+ rng_stream = sg_platf_rng_stream_get(id);
+
event_generator = xbt_new0(s_probabilist_event_generator_t, 1);
event_generator->type = e_generator_uniform;
- event_generator->s_uniform_parameters.alpha = alpha;
- event_generator->s_uniform_parameters.beta = beta;
+ event_generator->s_uniform_parameters.min = min;
+ event_generator->s_uniform_parameters.max = max;
+ event_generator->rng_stream = rng_stream;
tmgr_event_generator_next_value(event_generator);
-
+
return event_generator;
}
-probabilist_event_generator_t tmgr_event_generator_new_exponential(double lambda)
-{
+
+/**
+ * \brief Create a new #probabilist_event_generator_t following the exponential distribution
+ *
+ * This generator will generate random values following the exponential distribution.
+ * The mean value is 1/rate .
+ * The id is important : it controls the seed of the generator. So, generators with the
+ * same id and the same parameters will generate the same values.
+ *
+ * \param id The name of the generator
+ * \param rate The rate parameter
+ * \return a new #probabilist_event_generator_t
+ */
+probabilist_event_generator_t tmgr_event_generator_new_exponential(const char* id,
+ double rate)
+{
probabilist_event_generator_t event_generator = NULL;
-
+ RngStream rng_stream = NULL;
+
+ rng_stream = sg_platf_rng_stream_get(id);
+
event_generator = xbt_new0(s_probabilist_event_generator_t, 1);
event_generator->type = e_generator_exponential;
- event_generator->s_exponential_parameters.lambda = lambda;
+ event_generator->s_exponential_parameters.rate = rate;
+ event_generator->rng_stream = rng_stream;
+
+ tmgr_event_generator_next_value(event_generator);
return event_generator;
}
-probabilist_event_generator_t tmgr_event_generator_new_weibull(double lambda,
- double k)
-{
+/**
+ * \brief Create a new #probabilist_event_generator_t following the weibull distribution
+ *
+ * This generator will generate random values following the weibull distribution.
+ * The id is important : it controls the seed of the generator. So, generators with the
+ * same id and the same parameters will generate the same values.
+ *
+ * \param id The name of the generator
+ * \param scale The scale parameter
+ * \param shape The shape parameter
+ * \return a new #probabilist_event_generator_t
+ */
+probabilist_event_generator_t tmgr_event_generator_new_weibull(const char* id,
+ double scale,
+ double shape)
+{
probabilist_event_generator_t event_generator = NULL;
-
+ RngStream rng_stream = NULL;
+
+ rng_stream = sg_platf_rng_stream_get(id);
+
event_generator = xbt_new0(s_probabilist_event_generator_t, 1);
event_generator->type = e_generator_weibull;
- event_generator->s_weibull_parameters.lambda = lambda;
- event_generator->s_weibull_parameters.k = k;
+ event_generator->s_weibull_parameters.scale = scale;
+ event_generator->s_weibull_parameters.shape = shape;
+ event_generator->rng_stream = rng_stream;
tmgr_event_generator_next_value(event_generator);
-
+
return event_generator;
}
-
+/**
+ * \brief Get the next random value of a #probabilist_event_generator_t
+ * \param generator The #probabilist_event_generator_t
+ * \return the next random value
+ */
double tmgr_event_generator_next_value(probabilist_event_generator_t generator)
{
-
+
switch(generator->type) {
case e_generator_uniform:
generator->next_value = (RngStream_RandU01(generator->rng_stream)
- * (generator->s_uniform_parameters.beta - generator->s_uniform_parameters.alpha))
- + generator->s_uniform_parameters.alpha;
+ * (generator->s_uniform_parameters.max - generator->s_uniform_parameters.min))
+ + generator->s_uniform_parameters.min;
break;
case e_generator_exponential:
generator->next_value = -log(RngStream_RandU01(generator->rng_stream))
- / generator->s_exponential_parameters.lambda;
+ / generator->s_exponential_parameters.rate;
break;
case e_generator_weibull:
- generator->next_value = - generator->s_weibull_parameters.lambda
- * pow( log(RngStream_RandU01(generator->rng_stream)),
- 1.0 / generator->s_weibull_parameters.k );
+ generator->next_value = generator->s_weibull_parameters.scale
+ * pow( -log(RngStream_RandU01(generator->rng_stream)),
+ 1.0 / generator->s_weibull_parameters.shape );
}
-
+
return generator->next_value;
}
id, linecount, last_event->delta, event.delta, input);
}
last_event->delta = event.delta - last_event->delta;
+ } else {
+ if(event.delta > 0.0){
+ s_tmgr_event_t first_event;
+ first_event.delta=event.delta;
+ first_event.value=-1.0;
+ xbt_dynar_push(trace->s_list.event_list, &first_event);
+ }
}
xbt_dynar_push(trace->s_list.event_list, &event);
last_event =
{
if (!trace)
return;
-
+
switch(trace->type) {
case e_trace_list:
xbt_dynar_free(&(trace->s_list.event_list));
xbt_assert((trace_event->idx < xbt_dynar_length(trace->s_list.event_list)),
"You're referring to an event that does not exist!");
}
-
+
xbt_heap_push(h->heap, trace_event, start_time);
return trace_event;
trace = trace_event->trace;
*model = trace_event->model;
-
+
switch(trace->type) {
case e_trace_list:
-
+
event = xbt_dynar_get_ptr(trace->s_list.event_list, trace_event->idx);
*value = event->value;
trace_event->idx++;
} else if (event->delta > 0) { /* Last element, checking for periodicity */
xbt_heap_push(h->heap, trace_event, event_date + event->delta);
- trace_event->idx = 0;
+ trace_event->idx = 1; /* not 0 as the first event is a placeholder to handle when events really start */
} else { /* We don't need this trace_event anymore */
trace_event->free_me = 1;
}
break;
-
+
case e_trace_probabilist:
-
- //FIXME : Simplist and not tested
- //Would only work for failure events for now
- *value = (double) trace->s_probabilist.next_event;
- if(trace->s_probabilist.next_event == 0) {
- event_delta = tmgr_event_generator_next_value(trace->s_probabilist.event_generator[0]);
- trace->s_probabilist.next_event = 0;
+
+ //FIXME : not tested yet
+ if(trace->s_probabilist.is_state_trace) {
+ *value = (double) trace->s_probabilist.next_event;
+ if(trace->s_probabilist.next_event == 0) {
+ event_delta = tmgr_event_generator_next_value(trace->s_probabilist.event_generator[0]);
+ trace->s_probabilist.next_event = 1;
+ } else {
+ event_delta = tmgr_event_generator_next_value(trace->s_probabilist.event_generator[1]);
+ trace->s_probabilist.next_event = 0;
+ }
} else {
- event_delta = tmgr_event_generator_next_value(trace->s_probabilist.event_generator[1]);
- trace->s_probabilist.next_event = 1;
+ event_delta = tmgr_event_generator_next_value(trace->s_probabilist.event_generator[0]);
+ *value = tmgr_event_generator_next_value(trace->s_probabilist.event_generator[1]);
}
xbt_heap_push(h->heap, trace_event, event_date + event_delta);
-
+ XBT_DEBUG("Generating a new event at date %f, with value %f", event_date + event_delta, *value);
+
break;
}
