};
struct notification_client_list {
- struct lttng_trigger *trigger;
+ const struct lttng_trigger *trigger;
struct cds_list_head list;
struct cds_lfht_node notification_trigger_ht_node;
};
};
static unsigned long hash_channel_key(struct channel_key *key);
-static int evaluate_condition(const struct lttng_condition *condition,
+static int evaluate_buffer_condition(const struct lttng_condition *condition,
struct lttng_evaluation **evaluation,
const struct notification_thread_state *state,
const struct channel_state_sample *previous_sample,
static
struct session_info *session_info_create(const char *name,
uid_t uid, gid_t gid,
- struct lttng_session_trigger_list *trigger_list);
+ struct lttng_session_trigger_list *trigger_list,
+ struct cds_lfht *sessions_ht);
static
void session_info_add_channel(struct session_info *session_info,
struct channel_info *channel_info);
}
static
-int match_client_list(struct cds_lfht_node *node, const void *key)
+int match_client_list_condition(struct cds_lfht_node *node, const void *key)
{
- struct lttng_trigger *trigger_key = (struct lttng_trigger *) key;
+ struct lttng_condition *condition_key = (struct lttng_condition *) key;
struct notification_client_list *client_list;
- struct lttng_condition *condition;
- struct lttng_condition *condition_key = lttng_trigger_get_condition(
- trigger_key);
+ const struct lttng_condition *condition;
assert(condition_key);
client_list = caa_container_of(node, struct notification_client_list,
notification_trigger_ht_node);
- condition = lttng_trigger_get_condition(client_list->trigger);
+ condition = lttng_trigger_get_const_condition(client_list->trigger);
return !!lttng_condition_is_equal(condition_key, condition);
}
static
-int match_client_list_condition(struct cds_lfht_node *node, const void *key)
+int match_session(struct cds_lfht_node *node, const void *key)
{
- struct lttng_condition *condition_key = (struct lttng_condition *) key;
- struct notification_client_list *client_list;
- struct lttng_condition *condition;
-
- assert(condition_key);
-
- client_list = caa_container_of(node, struct notification_client_list,
- notification_trigger_ht_node);
- condition = lttng_trigger_get_condition(client_list->trigger);
+ const char *name = key;
+ struct session_info *session_info = caa_container_of(
+ node, struct session_info, sessions_ht_node);
- return !!lttng_condition_is_equal(condition_key, condition);
+ return !strcmp(session_info->name, name);
}
static
return key_hash ^ domain_hash;
}
+/*
+ * Get the type of object to which a given condition applies. Bindings let
+ * the notification system evaluate a trigger's condition when a given
+ * object's state is updated.
+ *
+ * For instance, a condition bound to a channel will be evaluated everytime
+ * the channel's state is changed by a channel monitoring sample.
+ */
+static
+enum lttng_object_type get_condition_binding_object(
+ const struct lttng_condition *condition)
+{
+ switch (lttng_condition_get_type(condition)) {
+ case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
+ case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
+ case LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE:
+ return LTTNG_OBJECT_TYPE_CHANNEL;
+ case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING:
+ case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED:
+ return LTTNG_OBJECT_TYPE_SESSION;
+ default:
+ return LTTNG_OBJECT_TYPE_UNKNOWN;
+ }
+}
+
static
void channel_info_destroy(struct channel_info *channel_info)
{
}
}
lttng_session_trigger_list_destroy(session_info->trigger_list);
+
+ rcu_read_lock();
+ cds_lfht_del(session_info->sessions_ht,
+ &session_info->sessions_ht_node);
+ rcu_read_unlock();
free(session_info->name);
free(session_info);
}
static
struct session_info *session_info_create(const char *name, uid_t uid, gid_t gid,
- struct lttng_session_trigger_list *trigger_list)
+ struct lttng_session_trigger_list *trigger_list,
+ struct cds_lfht *sessions_ht)
{
struct session_info *session_info;
session_info->uid = uid;
session_info->gid = gid;
session_info->trigger_list = trigger_list;
+ session_info->sessions_ht = sessions_ht;
end:
return session_info;
error:
return NULL;
}
+/* RCU read lock must be held by the caller. */
+static
+struct notification_client_list *get_client_list_from_condition(
+ struct notification_thread_state *state,
+ const struct lttng_condition *condition)
+{
+ struct cds_lfht_node *node;
+ struct cds_lfht_iter iter;
+
+ cds_lfht_lookup(state->notification_trigger_clients_ht,
+ lttng_condition_hash(condition),
+ match_client_list_condition,
+ condition,
+ &iter);
+ node = cds_lfht_iter_get_node(&iter);
+
+ return node ? caa_container_of(node,
+ struct notification_client_list,
+ notification_trigger_ht_node) : NULL;
+}
+
/* This function must be called with the RCU read lock held. */
static
-int evaluate_condition_for_client(struct lttng_trigger *trigger,
- struct lttng_condition *condition,
- struct notification_client *client,
- struct notification_thread_state *state)
+int evaluate_channel_condition_for_client(
+ const struct lttng_condition *condition,
+ struct notification_thread_state *state,
+ struct lttng_evaluation **evaluation,
+ uid_t *session_uid, gid_t *session_gid)
{
int ret;
struct cds_lfht_iter iter;
struct channel_key *channel_key = NULL;
struct channel_state_sample *last_sample = NULL;
struct lttng_channel_trigger_list *channel_trigger_list = NULL;
- struct lttng_evaluation *evaluation = NULL;
- struct notification_client_list client_list = { 0 };
- struct notification_client_list_element client_list_element = { 0 };
- assert(trigger);
- assert(condition);
- assert(client);
- assert(state);
-
- /* Find the channel associated with the trigger. */
+ /* Find the channel associated with the condition. */
cds_lfht_for_each_entry(state->channel_triggers_ht, &iter,
- channel_trigger_list , channel_triggers_ht_node) {
+ channel_trigger_list, channel_triggers_ht_node) {
struct lttng_trigger_list_element *element;
cds_list_for_each_entry(element, &channel_trigger_list->list, node) {
const struct lttng_condition *current_condition =
- lttng_trigger_get_const_condition(
+ lttng_trigger_get_const_condition(
element->trigger);
assert(current_condition);
if (!channel_key){
/* No channel found; normal exit. */
- DBG("[notification-thread] No channel associated with newly subscribed-to condition");
+ DBG("[notification-thread] No known channel associated with newly subscribed-to condition");
ret = 0;
goto end;
}
goto end;
}
- ret = evaluate_condition(condition, &evaluation, state,
+ ret = evaluate_buffer_condition(condition, evaluation, state,
NULL, last_sample,
0, channel_info->session_info->consumed_data_size,
channel_info);
goto end;
}
+ *session_uid = channel_info->session_info->uid;
+ *session_gid = channel_info->session_info->gid;
+end:
+ return ret;
+}
+
+static
+const char *get_condition_session_name(const struct lttng_condition *condition)
+{
+ const char *session_name = NULL;
+ enum lttng_condition_status status;
+
+ switch (lttng_condition_get_type(condition)) {
+ case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
+ case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
+ status = lttng_condition_buffer_usage_get_session_name(
+ condition, &session_name);
+ break;
+ case LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE:
+ status = lttng_condition_session_consumed_size_get_session_name(
+ condition, &session_name);
+ break;
+ case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING:
+ case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED:
+ status = lttng_condition_session_rotation_get_session_name(
+ condition, &session_name);
+ break;
+ default:
+ abort();
+ }
+ if (status != LTTNG_CONDITION_STATUS_OK) {
+ ERR("[notification-thread] Failed to retrieve session rotation condition's session name");
+ goto end;
+ }
+end:
+ return session_name;
+}
+
+/* This function must be called with the RCU read lock held. */
+static
+int evaluate_session_condition_for_client(
+ const struct lttng_condition *condition,
+ struct notification_thread_state *state,
+ struct lttng_evaluation **evaluation,
+ uid_t *session_uid, gid_t *session_gid)
+{
+ int ret;
+ struct cds_lfht_iter iter;
+ struct cds_lfht_node *node;
+ const char *session_name;
+ struct session_info *session_info = NULL;
+
+ session_name = get_condition_session_name(condition);
+
+ /* Find the session associated with the trigger. */
+ cds_lfht_lookup(state->sessions_ht,
+ hash_key_str(session_name, lttng_ht_seed),
+ match_session,
+ session_name,
+ &iter);
+ node = cds_lfht_iter_get_node(&iter);
+ if (!node) {
+ DBG("[notification-thread] No known session matching name \"%s\"",
+ session_name);
+ ret = 0;
+ goto end;
+ }
+
+ session_info = caa_container_of(node, struct session_info,
+ sessions_ht_node);
+ session_info_get(session_info);
+
+ /*
+ * Evaluation is performed in-line here since only one type of
+ * session-bound condition is handled for the moment.
+ */
+ switch (lttng_condition_get_type(condition)) {
+ case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING:
+ if (!session_info->rotation.ongoing) {
+ goto end_session_put;
+ }
+
+ *evaluation = lttng_evaluation_session_rotation_ongoing_create(
+ session_info->rotation.id);
+ if (!*evaluation) {
+ /* Fatal error. */
+ ERR("[notification-thread] Failed to create session rotation ongoing evaluation for session \"%s\"",
+ session_info->name);
+ ret = -1;
+ goto end_session_put;
+ }
+ ret = 0;
+ break;
+ default:
+ ret = 0;
+ goto end_session_put;
+ }
+
+ *session_uid = session_info->uid;
+ *session_gid = session_info->gid;
+
+end_session_put:
+ session_info_put(session_info);
+end:
+ return ret;
+}
+
+/* This function must be called with the RCU read lock held. */
+static
+int evaluate_condition_for_client(const struct lttng_trigger *trigger,
+ const struct lttng_condition *condition,
+ struct notification_client *client,
+ struct notification_thread_state *state)
+{
+ int ret;
+ struct lttng_evaluation *evaluation = NULL;
+ struct notification_client_list client_list = { 0 };
+ struct notification_client_list_element client_list_element = { 0 };
+ uid_t object_uid = 0;
+ gid_t object_gid = 0;
+
+ assert(trigger);
+ assert(condition);
+ assert(client);
+ assert(state);
+
+ switch (get_condition_binding_object(condition)) {
+ case LTTNG_OBJECT_TYPE_SESSION:
+ ret = evaluate_session_condition_for_client(condition, state,
+ &evaluation, &object_uid, &object_gid);
+ break;
+ case LTTNG_OBJECT_TYPE_CHANNEL:
+ ret = evaluate_channel_condition_for_client(condition, state,
+ &evaluation, &object_uid, &object_gid);
+ break;
+ case LTTNG_OBJECT_TYPE_NONE:
+ ret = 0;
+ goto end;
+ case LTTNG_OBJECT_TYPE_UNKNOWN:
+ default:
+ ret = -1;
+ goto end;
+ }
+
if (!evaluation) {
/* Evaluation yielded nothing. Normal exit. */
DBG("[notification-thread] Newly subscribed-to condition evaluated to false, nothing to report to client");
/* Send evaluation result to the newly-subscribed client. */
DBG("[notification-thread] Newly subscribed-to condition evaluated to true, notifying client");
ret = send_evaluation_to_clients(trigger, evaluation, &client_list,
- state, channel_info->session_info->uid,
- channel_info->session_info->gid);
+ state, object_uid, object_gid);
end:
return ret;
enum lttng_notification_channel_status *_status)
{
int ret = 0;
- struct cds_lfht_iter iter;
- struct cds_lfht_node *node;
struct notification_client_list *client_list;
struct lttng_condition_list_element *condition_list_element = NULL;
struct notification_client_list_element *client_list_element = NULL;
condition_list_element->condition = condition;
cds_list_add(&condition_list_element->node, &client->condition_list);
- cds_lfht_lookup(state->notification_trigger_clients_ht,
- lttng_condition_hash(condition),
- match_client_list_condition,
- condition,
- &iter);
- node = cds_lfht_iter_get_node(&iter);
- if (!node) {
+ client_list = get_client_list_from_condition(state, condition);
+ if (!client_list) {
/*
* No notification-emiting trigger registered with this
* condition. We don't evaluate the condition right away
goto end_unlock;
}
- client_list = caa_container_of(node, struct notification_client_list,
- notification_trigger_ht_node);
/*
* The condition to which the client just subscribed is evaluated
* at this point so that conditions that are already TRUE result
struct notification_thread_state *state,
enum lttng_notification_channel_status *_status)
{
- struct cds_lfht_iter iter;
- struct cds_lfht_node *node;
struct notification_client_list *client_list;
struct lttng_condition_list_element *condition_list_element,
*condition_tmp;
* matching the condition.
*/
rcu_read_lock();
- cds_lfht_lookup(state->notification_trigger_clients_ht,
- lttng_condition_hash(condition),
- match_client_list_condition,
- condition,
- &iter);
- node = cds_lfht_iter_get_node(&iter);
- if (!node) {
+ client_list = get_client_list_from_condition(state, condition);
+ if (!client_list) {
goto end_unlock;
}
- client_list = caa_container_of(node, struct notification_client_list,
- notification_trigger_ht_node);
cds_list_for_each_entry_safe(client_list_element, client_tmp,
&client_list->list, node) {
if (client_list_element->client->socket != client->socket) {
return false;
}
-/*
- * Get the type of object to which a given trigger applies. Binding lets
- * the notification system evaluate a trigger's condition when a given
- * object's state is updated.
- *
- * For instance, a condition bound to a channel will be evaluated everytime
- * the channel's state is changed by a channel monitoring sample.
- */
-static
-enum lttng_object_type get_trigger_binding_object(
- const struct lttng_trigger *trigger)
-{
- const struct lttng_condition *condition;
-
- condition = lttng_trigger_get_const_condition(trigger);
- switch (lttng_condition_get_type(condition)) {
- case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
- case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
- case LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE:
- return LTTNG_OBJECT_TYPE_CHANNEL;
- case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING:
- case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED:
- return LTTNG_OBJECT_TYPE_SESSION;
- default:
- return LTTNG_OBJECT_TYPE_UNKNOWN;
- }
-}
-
static
bool trigger_applies_to_channel(const struct lttng_trigger *trigger,
const struct channel_info *channel_info)
return applies;
}
+/* Must be called with RCU read lock held. */
static
-int match_session(struct cds_lfht_node *node, const void *key)
+struct lttng_session_trigger_list *get_session_trigger_list(
+ struct notification_thread_state *state,
+ const char *session_name)
{
- const char *name = key;
- struct session_info *session_info = caa_container_of(
- node, struct session_info, sessions_ht_node);
+ struct lttng_session_trigger_list *list = NULL;
+ struct cds_lfht_node *node;
+ struct cds_lfht_iter iter;
- return !strcmp(session_info->name, name);
+ cds_lfht_lookup(state->session_triggers_ht,
+ hash_key_str(session_name, lttng_ht_seed),
+ match_session_trigger_list,
+ session_name,
+ &iter);
+ node = cds_lfht_iter_get_node(&iter);
+ if (!node) {
+ /*
+ * Not an error, the list of triggers applying to that session
+ * will be initialized when the session is created.
+ */
+ DBG("[notification-thread] No trigger list found for session \"%s\" as it is not yet known to the notification system",
+ session_name);
+ goto end;
+ }
+
+ list = caa_container_of(node,
+ struct lttng_session_trigger_list,
+ session_triggers_ht_node);
+end:
+ return list;
}
/*
sessions_ht_node);
assert(session->uid == uid);
assert(session->gid == gid);
- goto error;
+ session_info_get(session);
+ goto end;
}
trigger_list = lttng_session_trigger_list_build(state, name);
goto error;
}
- session = session_info_create(name, uid, gid, trigger_list);
+ session = session_info_create(name, uid, gid, trigger_list,
+ state->sessions_ht);
if (!session) {
ERR("[notification-thread] Failed to allocation session info for session \"%s\" (uid = %i, gid = %i)",
name, uid, gid);
cds_lfht_add(state->sessions_ht, hash_key_str(name, lttng_ht_seed),
&session->sessions_ht_node);
+end:
rcu_read_unlock();
return session;
error:
hash_channel_key(&new_channel_info->key),
&channel_trigger_list->channel_triggers_ht_node);
rcu_read_unlock();
+ session_info_put(session_info);
*cmd_result = LTTNG_OK;
return 0;
error:
return 0;
}
+static
+int handle_notification_thread_command_session_rotation(
+ struct notification_thread_state *state,
+ enum notification_thread_command_type cmd_type,
+ const char *session_name, uid_t session_uid, gid_t session_gid,
+ uint64_t trace_archive_chunk_id,
+ struct lttng_trace_archive_location *location,
+ enum lttng_error_code *_cmd_result)
+{
+ int ret = 0;
+ enum lttng_error_code cmd_result = LTTNG_OK;
+ struct lttng_session_trigger_list *trigger_list;
+ struct lttng_trigger_list_element *trigger_list_element;
+ struct session_info *session_info;
+
+ rcu_read_lock();
+
+ session_info = find_or_create_session_info(state, session_name,
+ session_uid, session_gid);
+ if (!session_info) {
+ /* Allocation error or an internal error occured. */
+ ret = -1;
+ cmd_result = LTTNG_ERR_NOMEM;
+ goto end;
+ }
+
+ session_info->rotation.ongoing =
+ cmd_type == NOTIFICATION_COMMAND_TYPE_SESSION_ROTATION_ONGOING;
+ session_info->rotation.id = trace_archive_chunk_id;
+ trigger_list = get_session_trigger_list(state, session_name);
+ if (!trigger_list) {
+ DBG("[notification-thread] No triggers applying to session \"%s\" found",
+ session_name);
+ goto end;
+ }
+
+ cds_list_for_each_entry(trigger_list_element, &trigger_list->list,
+ node) {
+ const struct lttng_condition *condition;
+ const struct lttng_action *action;
+ const struct lttng_trigger *trigger;
+ struct notification_client_list *client_list;
+ struct lttng_evaluation *evaluation = NULL;
+ enum lttng_condition_type condition_type;
+
+ trigger = trigger_list_element->trigger;
+ condition = lttng_trigger_get_const_condition(trigger);
+ assert(condition);
+ condition_type = lttng_condition_get_type(condition);
+
+ if (condition_type == LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING &&
+ cmd_type != NOTIFICATION_COMMAND_TYPE_SESSION_ROTATION_ONGOING) {
+ continue;
+ } else if (condition_type == LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED &&
+ cmd_type != NOTIFICATION_COMMAND_TYPE_SESSION_ROTATION_COMPLETED) {
+ continue;
+ }
+
+ action = lttng_trigger_get_const_action(trigger);
+
+ /* Notify actions are the only type currently supported. */
+ assert(lttng_action_get_type_const(action) ==
+ LTTNG_ACTION_TYPE_NOTIFY);
+
+ client_list = get_client_list_from_condition(state, condition);
+ assert(client_list);
+
+ if (cds_list_empty(&client_list->list)) {
+ /*
+ * No clients interested in the evaluation's result,
+ * skip it.
+ */
+ continue;
+ }
+
+ if (cmd_type == NOTIFICATION_COMMAND_TYPE_SESSION_ROTATION_ONGOING) {
+ evaluation = lttng_evaluation_session_rotation_ongoing_create(
+ trace_archive_chunk_id);
+ } else {
+ evaluation = lttng_evaluation_session_rotation_completed_create(
+ trace_archive_chunk_id, location);
+ }
+
+ if (!evaluation) {
+ /* Internal error */
+ ret = -1;
+ cmd_result = LTTNG_ERR_UNK;
+ goto end;
+ }
+
+ /* Dispatch evaluation result to all clients. */
+ ret = send_evaluation_to_clients(trigger_list_element->trigger,
+ evaluation, client_list, state,
+ session_info->uid,
+ session_info->gid);
+ lttng_evaluation_destroy(evaluation);
+ if (caa_unlikely(ret)) {
+ goto end;
+ }
+ }
+end:
+ session_info_put(session_info);
+ *_cmd_result = cmd_result;
+ rcu_read_unlock();
+ return ret;
+}
+
static
int condition_is_supported(struct lttng_condition *condition)
{
struct notification_thread_state *state)
{
int ret = 0;
- struct cds_lfht_node *node;
- struct cds_lfht_iter iter;
const struct lttng_condition *condition;
const char *session_name;
struct lttng_session_trigger_list *trigger_list;
goto end;
}
- cds_lfht_lookup(state->session_triggers_ht,
- hash_key_str(session_name, lttng_ht_seed),
- match_session_trigger_list,
- session_name,
- &iter);
- node = cds_lfht_iter_get_node(&iter);
- if (!node) {
- /*
- * Not an error, the list of triggers applying to that session
- * will be initialized when the session is created.
- */
+ trigger_list = get_session_trigger_list(state, session_name);
+ if (!trigger_list) {
DBG("[notification-thread] Unable to bind trigger applying to session \"%s\" as it is not yet known to the notification system",
session_name);
goto end;
- }
- trigger_list = caa_container_of(node,
- struct lttng_session_trigger_list,
- session_triggers_ht_node);
+ }
DBG("[notification-thread] Newly registered trigger bound to session \"%s\"",
session_name);
lttng_condition_hash(condition),
&client_list->notification_trigger_ht_node);
- switch (get_trigger_binding_object(trigger)) {
+ switch (get_condition_binding_object(condition)) {
case LTTNG_OBJECT_TYPE_SESSION:
/* Add the trigger to the list if it matches a known session. */
ret = bind_trigger_to_matching_session(trigger, state);
if (ret) {
goto error_free_client_list;
}
+ break;
case LTTNG_OBJECT_TYPE_CHANNEL:
/*
* Add the trigger to list of triggers bound to the channels
enum lttng_error_code *_cmd_reply)
{
struct cds_lfht_iter iter;
- struct cds_lfht_node *node, *triggers_ht_node;
+ struct cds_lfht_node *triggers_ht_node;
struct lttng_channel_trigger_list *trigger_list;
struct notification_client_list *client_list;
struct notification_client_list_element *client_list_element, *tmp;
* Remove and release the client list from
* notification_trigger_clients_ht.
*/
- cds_lfht_lookup(state->notification_trigger_clients_ht,
- lttng_condition_hash(condition),
- match_client_list,
- trigger,
- &iter);
- node = cds_lfht_iter_get_node(&iter);
- assert(node);
- client_list = caa_container_of(node, struct notification_client_list,
- notification_trigger_ht_node);
+ client_list = get_client_list_from_condition(state, condition);
+ assert(client_list);
+
cds_list_for_each_entry_safe(client_list_element, tmp,
&client_list->list, node) {
free(client_list_element);
}
- cds_lfht_del(state->notification_trigger_clients_ht, node);
+ cds_lfht_del(state->notification_trigger_clients_ht,
+ &client_list->notification_trigger_ht_node);
free(client_list);
/* Remove trigger from triggers_ht. */
cmd->parameters.remove_channel.domain,
&cmd->reply_code);
break;
+ case NOTIFICATION_COMMAND_TYPE_SESSION_ROTATION_ONGOING:
+ case NOTIFICATION_COMMAND_TYPE_SESSION_ROTATION_COMPLETED:
+ DBG("[notification-thread] Received session rotation %s command",
+ cmd->type == NOTIFICATION_COMMAND_TYPE_SESSION_ROTATION_ONGOING ?
+ "ongoing" : "completed");
+ ret = handle_notification_thread_command_session_rotation(
+ state,
+ cmd->type,
+ cmd->parameters.session_rotation.session_name,
+ cmd->parameters.session_rotation.uid,
+ cmd->parameters.session_rotation.gid,
+ cmd->parameters.session_rotation.trace_archive_chunk_id,
+ cmd->parameters.session_rotation.location,
+ &cmd->reply_code);
+ break;
case NOTIFICATION_COMMAND_TYPE_QUIT:
DBG("[notification-thread] Received quit command");
cmd->reply_code = LTTNG_OK;
}
static
-int evaluate_condition(const struct lttng_condition *condition,
+int evaluate_buffer_condition(const struct lttng_condition *condition,
struct lttng_evaluation **evaluation,
const struct notification_thread_state *state,
const struct channel_state_sample *previous_sample,
* Check if any client is subscribed to the result of this
* evaluation.
*/
- cds_lfht_lookup(state->notification_trigger_clients_ht,
- lttng_condition_hash(condition),
- match_client_list,
- trigger,
- &iter);
- node = cds_lfht_iter_get_node(&iter);
- assert(node);
-
- client_list = caa_container_of(node,
- struct notification_client_list,
- notification_trigger_ht_node);
+ client_list = get_client_list_from_condition(state, condition);
+ assert(client_list);
if (cds_list_empty(&client_list->list)) {
/*
* No clients interested in the evaluation's result,
continue;
}
- ret = evaluate_condition(condition, &evaluation, state,
+ ret = evaluate_buffer_condition(condition, &evaluation, state,
previous_sample_available ? &previous_sample : NULL,
&latest_sample,
previous_session_consumed_total,
projects / lttng-tools.git / blobdiff