context: reorganize graph recalc

Move quantum calculation after adding unassigned to fallback drivers
so that they also receive the required quantum.
This commit is contained in:
Wim Taymans 2020-04-28 09:58:43 +02:00
parent 2220d5b9b6
commit ea9a016797
3 changed files with 59 additions and 65 deletions

View file

@ -744,9 +744,6 @@ static int collect_nodes(struct pw_impl_node *driver)
struct pw_impl_node *n, *t;
struct pw_impl_port *p;
struct pw_impl_link *l;
uint32_t max_quantum = 0;
uint32_t min_quantum = 0;
uint32_t quantum;
spa_list_consume(t, &driver->follower_list, follower_link) {
spa_list_remove(&t->follower_link);
@ -763,13 +760,6 @@ static int collect_nodes(struct pw_impl_node *driver)
spa_list_remove(&n->sort_link);
pw_impl_node_set_driver(n, driver);
if (n->quantum_size > 0) {
if (min_quantum == 0 || n->quantum_size < min_quantum)
min_quantum = n->quantum_size;
if (n->quantum_size > max_quantum)
max_quantum = n->quantum_size;
}
spa_list_for_each(p, &n->input_ports, link) {
spa_list_for_each(l, &p->links, input_link) {
t = l->output->node;
@ -789,14 +779,6 @@ static int collect_nodes(struct pw_impl_node *driver)
}
}
}
quantum = min_quantum;
if (quantum == 0)
quantum = driver->context->defaults.clock_quantum;
driver->quantum_current = SPA_CLAMP(quantum,
driver->context->defaults.clock_min_quantum,
driver->context->defaults.clock_max_quantum);
return 0;
}
@ -819,37 +801,31 @@ int pw_context_recalc_graph(struct pw_context *context, const char *reason)
* the unassigned nodes. */
target = fallback = NULL;
spa_list_for_each(n, &context->driver_list, driver_link) {
n->active_followers = 0;
if (n->exported)
continue;
if (n->active && !n->visited)
if (!n->visited)
collect_nodes(n);
/* from now on we are only interested in nodes that are
* a master. We're going to count the number of followers it
* has. */
if (!n->master)
/* from now on we are only interested in active master nodes.
* We're going to see if there are active followers. */
if (!n->master || !n->active)
continue;
spa_list_for_each(s, &n->follower_list, follower_link) {
pw_log_debug(NAME" %p: driver %p: follower %p %s: %d",
context, n, s, s->name, s->active);
if (s != n && s->active)
n->active_followers++;
}
pw_log_debug(NAME" %p: driver %p active followers %d",
context, n, n->active_followers);
/* first active master node is fallback */
if (fallback == NULL)
fallback = n;
/* if the master has active followers, it is a target for our
* unassigned nodes */
if (n->active_followers > 0) {
if (target == NULL)
target = n;
spa_list_for_each(s, &n->follower_list, follower_link) {
pw_log_debug(NAME" %p: driver %p: follower %p %s: %d",
context, n, s, s->name, s->active);
if (s != n && s->active) {
/* if the master has active followers, it is a target for our
* unassigned nodes */
if (target == NULL)
target = n;
break;
}
}
}
/* no active node, use fallback master */
@ -871,12 +847,6 @@ int pw_context_recalc_graph(struct pw_context *context, const char *reason)
t = n->active && n->want_driver ? target : NULL;
if (t != NULL) {
if (n->quantum_size > 0 && n->quantum_size < t->quantum_current)
t->quantum_current =
SPA_MAX(context->defaults.clock_min_quantum, n->quantum_size);
t->active_followers++;
}
pw_impl_node_set_driver(n, t);
if (t == NULL)
pw_impl_node_set_state(n, PW_NODE_STATE_IDLE);
@ -884,33 +854,60 @@ int pw_context_recalc_graph(struct pw_context *context, const char *reason)
n->visited = false;
}
/* assign final quantum and set state followers and master */
/* assign final quantum and set state for followers and master */
spa_list_for_each(n, &context->driver_list, driver_link) {
enum pw_node_state state;
uint32_t n_active = 0;
uint32_t max_quantum = 0;
uint32_t min_quantum = 0;
uint32_t quantum;
if (!n->master || n->exported)
continue;
/* collect quantum and count active nodes */
spa_list_for_each(s, &n->follower_list, follower_link) {
if (s == n)
continue;
if (s->active)
n_active++;
if (s->quantum_size > 0) {
if (min_quantum == 0 || s->quantum_size < min_quantum)
min_quantum = s->quantum_size;
if (s->quantum_size > max_quantum)
max_quantum = s->quantum_size;
}
}
quantum = min_quantum;
if (quantum == 0)
quantum = context->defaults.clock_quantum;
quantum = SPA_CLAMP(quantum,
context->defaults.clock_min_quantum,
context->defaults.clock_max_quantum);
if (n->rt.position && quantum != n->rt.position->clock.duration) {
pw_log_info("(%s-%u) new quantum:%"PRIu64"->%u",
n->name, n->info.id,
n->rt.position->clock.duration,
quantum);
n->rt.position->clock.duration = quantum;
}
pw_log_debug(NAME" %p: master %p n_active:%d quantum:%u '%s'", context, n,
n_active, quantum, n->name);
state = n->info.state;
if (n->active_followers > 0)
if (n_active > 0)
state = PW_NODE_STATE_RUNNING;
else if (state > PW_NODE_STATE_IDLE)
state = PW_NODE_STATE_IDLE;
if (n->rt.position && n->quantum_current != n->rt.position->clock.duration) {
pw_log_info("(%s-%u) new quantum:%"PRIu64"->%u",
n->name, n->info.id,
n->rt.position->clock.duration,
n->quantum_current);
n->rt.position->clock.duration = n->quantum_current;
}
pw_log_debug(NAME" %p: master %p quantum:%u '%s'", context, n,
n->quantum_current, n->name);
spa_list_for_each(s, &n->follower_list, follower_link) {
if (s == n)
continue;
pw_log_debug(NAME" %p: follower %p: active:%d '%s'",
context, s, s->active, s->name);
if (s != n && s->active)
if (s->active)
pw_impl_node_set_state(s, state);
}
pw_impl_node_set_state(n, state);

View file

@ -674,12 +674,11 @@ int pw_impl_node_set_driver(struct pw_impl_node *node, struct pw_impl_node *driv
remove_segment_master(old, node->info.id);
node->master = node->driver && driver == node;
pw_log_debug(NAME" %p: driver %p quantum:%u master:%u", node,
driver, driver->quantum_current, node->master);
pw_log_info("(%s-%u) -> change driver (%s-%d -> %s-%d) quantum:%u",
pw_log_debug(NAME" %p: driver %p master:%u", node,
driver, node->master);
pw_log_info("(%s-%u) -> change driver (%s-%d -> %s-%d)",
node->name, node->info.id,
old->name, old->info.id, driver->name, driver->info.id,
driver->quantum_current);
old->name, old->info.id, driver->name, driver->info.id);
node->driver_node = driver;

View file

@ -532,7 +532,6 @@ struct pw_impl_node {
struct pw_impl_node *driver_node;
struct spa_list follower_list;
struct spa_list follower_link;
uint32_t active_followers;
struct spa_list sort_link; /**< link used to sort nodes */
@ -549,7 +548,6 @@ struct pw_impl_node {
struct pw_loop *data_loop; /**< the data loop for this node */
uint32_t quantum_size; /**< desired quantum */
uint32_t quantum_current; /**< current quantum for driver */
struct spa_source source; /**< source to remotely trigger this node */
struct pw_memblock *activation;
struct {