+ /* Set threshold byte */
+ if ((1 << mask_position) & i) {
+ condition_status = lttng_condition_buffer_usage_set_threshold(
+ condition, 0);
+ if (condition_status != LTTNG_CONDITION_STATUS_OK) {
+ loop_ret = 1;
+ goto loop_end;
+ }
+ threshold_byte_set = true;
+ }
+ mask_position++;
+
+ /* Set domain type */
+ if ((1 << mask_position) & i) {
+ condition_status = lttng_condition_buffer_usage_set_domain_type(
+ condition, LTTNG_DOMAIN_UST);
+ if (condition_status != LTTNG_CONDITION_STATUS_OK) {
+ loop_ret = 1;
+ goto loop_end;
+ }
+ domain_type_set = true;
+ }
+
+ /* Safety check */
+ if (mask_position != test_vector_size -1) {
+ assert("Logic error for test vector generation");
+ }
+
+ loop_ret = asprintf(&test_tuple_string, "session name %s, channel name %s, threshold ratio %s, threshold byte %s, domain type %s",
+ session_name_set ? "set" : "unset",
+ channel_name_set ? "set" : "unset",
+ threshold_ratio_set ? "set" : "unset",
+ threshold_byte_set ? "set" : "unset",
+ domain_type_set? "set" : "unset");
+ if (!test_tuple_string || loop_ret < 0) {
+ loop_ret = 1;
+ goto loop_end;
+ }
+
+ /* Create trigger */
+ trigger = lttng_trigger_create(condition, action);
+ if (!trigger) {
+ loop_ret = 1;
+ goto loop_end;
+ }
+
+ loop_ret = lttng_register_trigger(trigger);
+
+loop_end:
+ if (loop_ret == 1) {
+ fail("Setup error occurred for tuple: %s", test_tuple_string);
+ goto loop_cleanup;
+ }
+
+ /* This combination happens three times */
+ if (session_name_set && channel_name_set
+ && (threshold_ratio_set || threshold_byte_set)
+ && domain_type_set) {
+ ok(loop_ret == 0, "Trigger is registered: %s", test_tuple_string);
+
+ /*
+ * Test that a trigger cannot be registered
+ * multiple time.
+ */
+ loop_ret = lttng_register_trigger(trigger);
+ ok(loop_ret == -LTTNG_ERR_TRIGGER_EXISTS, "Re-register trigger fails as expected: %s", test_tuple_string);
+
+ /* Test that a trigger can be unregistered */
+ loop_ret = lttng_unregister_trigger(trigger);
+ ok(loop_ret == 0, "Unregister trigger: %s", test_tuple_string);
+
+ /*
+ * Test that unregistration of a non-previously
+ * registered trigger fail.
+ */
+ loop_ret = lttng_unregister_trigger(trigger);
+ ok(loop_ret == -LTTNG_ERR_TRIGGER_NOT_FOUND, "Unregister of a non-registered trigger fails as expected: %s", test_tuple_string);
+ } else {
+ ok(loop_ret == -LTTNG_ERR_INVALID_TRIGGER, "Trigger is invalid as expected and cannot be registered: %s", test_tuple_string);
+ }
+
+loop_cleanup:
+ free(test_tuple_string);
+ lttng_trigger_destroy(trigger);
+ lttng_condition_destroy(condition);
+ }
+
+end:
+ lttng_action_destroy(action);
+}
+
+static
+void wait_data_pending(const char *session_name)
+{
+ int ret;
+
+ do {
+ ret = lttng_data_pending(session_name);
+ assert(ret >= 0);
+ } while (ret != 0);
+}
+
+static
+int setup_buffer_usage_condition(struct lttng_condition *condition,
+ const char *condition_name,
+ const char *session_name,
+ const char *channel_name,
+ const enum lttng_domain_type domain_type)
+{
+ enum lttng_condition_status condition_status;
+ int ret = 0;
+
+ condition_status = lttng_condition_buffer_usage_set_session_name(
+ condition, session_name);
+ if (condition_status != LTTNG_CONDITION_STATUS_OK) {
+ fail("Failed to set session name on creation of condition `%s`",
+ condition_name);
+ ret = -1;
+ goto end;
+ }
+
+ condition_status = lttng_condition_buffer_usage_set_channel_name(
+ condition, channel_name);
+ if (condition_status != LTTNG_CONDITION_STATUS_OK) {
+ fail("Failed to set channel name on creation of condition `%s`",
+ condition_name);
+ ret = -1;
+ goto end;
+ }
+
+ condition_status = lttng_condition_buffer_usage_set_domain_type(
+ condition, domain_type);
+ if (condition_status != LTTNG_CONDITION_STATUS_OK) {
+ fail("Failed to set domain type on creation of condition `%s`",
+ condition_name);
+ ret = -1;
+ goto end;
+ }
+
+end:
+ return ret;
+}
+
+static
+void test_invalid_channel_subscription(
+ const enum lttng_domain_type domain_type)
+{
+ enum lttng_condition_status condition_status;
+ enum lttng_notification_channel_status nc_status;
+ struct lttng_condition *dummy_condition = NULL;
+ struct lttng_condition *dummy_invalid_condition = NULL;
+ struct lttng_notification_channel *notification_channel = NULL;
+ int ret = 0;
+
+ notification_channel = lttng_notification_channel_create(
+ lttng_session_daemon_notification_endpoint);
+ ok(notification_channel, "Notification channel object creation");
+ if (!notification_channel) {
+ goto end;
+ }
+
+ /*
+ * Create a dummy, empty (thus invalid) condition to test error paths.
+ */
+ dummy_invalid_condition = lttng_condition_buffer_usage_low_create();
+ if (!dummy_invalid_condition) {
+ fail("Setup error on condition creation");
+ goto end;
+ }
+
+ /*
+ * Test subscription and unsubscription of an invalid condition to/from
+ * a channel.
+ */
+ nc_status = lttng_notification_channel_subscribe(
+ notification_channel, dummy_invalid_condition);
+ ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INVALID,
+ "Subscribing to an invalid condition");
+
+ nc_status = lttng_notification_channel_unsubscribe(
+ notification_channel, dummy_invalid_condition);
+ ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INVALID,
+ "Unsubscribing from an invalid condition");
+
+ /* Create a valid dummy condition with a ratio of 0.5 */
+ dummy_condition = lttng_condition_buffer_usage_low_create();
+ if (!dummy_condition) {
+ fail("Setup error on dummy_condition creation");
+ goto end;
+ }
+
+ condition_status = lttng_condition_buffer_usage_set_threshold_ratio(
+ dummy_condition, 0.5);
+ if (condition_status != LTTNG_CONDITION_STATUS_OK) {
+ fail("Setup error on condition creation");
+ goto end;
+ }
+
+ ret = setup_buffer_usage_condition(dummy_condition, "dummy_condition",
+ "dummy_session", "dummy_channel", domain_type);
+ if (ret) {
+ fail("Setup error on dummy condition creation");
+ goto end;
+ }
+
+ /*
+ * Test subscription and unsubscription to/from a channel with invalid
+ * parameters.
+ */
+ nc_status = lttng_notification_channel_subscribe(NULL, NULL);
+ ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INVALID,
+ "Notification channel subscription is invalid: NULL, NULL");
+
+ nc_status = lttng_notification_channel_subscribe(
+ notification_channel, NULL);
+ ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INVALID,
+ "Notification channel subscription is invalid: NON-NULL, NULL");
+
+ nc_status = lttng_notification_channel_subscribe(NULL, dummy_condition);
+ ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INVALID,
+ "Notification channel subscription is invalid: NULL, NON-NULL");
+
+ nc_status = lttng_notification_channel_unsubscribe(
+ notification_channel, dummy_condition);
+ ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_UNKNOWN_CONDITION,
+ "Unsubscribing from a valid unknown condition");
+
+end:
+ lttng_notification_channel_destroy(notification_channel);
+ lttng_condition_destroy(dummy_invalid_condition);
+ lttng_condition_destroy(dummy_condition);
+ return;
+}
+
+enum buffer_usage_type {
+ BUFFER_USAGE_TYPE_LOW,
+ BUFFER_USAGE_TYPE_HIGH,
+};
+
+static int register_buffer_usage_notify_trigger(const char *session_name,
+ const char *channel_name,
+ const enum lttng_domain_type domain_type,
+ enum buffer_usage_type buffer_usage_type,
+ double ratio,
+ struct lttng_condition **condition,
+ struct lttng_action **action,
+ struct lttng_trigger **trigger)
+{
+ enum lttng_condition_status condition_status;
+ struct lttng_action *tmp_action = NULL;
+ struct lttng_condition *tmp_condition = NULL;
+ struct lttng_trigger *tmp_trigger = NULL;
+ int ret = 0;
+
+ /* Set-up */
+ tmp_action = lttng_action_notify_create();
+ if (!action) {
+ fail("Setup error on action creation");
+ ret = -1;
+ goto error;
+ }
+
+ if (buffer_usage_type == BUFFER_USAGE_TYPE_LOW) {
+ tmp_condition = lttng_condition_buffer_usage_low_create();
+ } else {
+ tmp_condition = lttng_condition_buffer_usage_high_create();
+ }
+
+ if (!tmp_condition) {
+ fail("Setup error on condition creation");
+ ret = -1;
+ goto error;
+ }
+
+ /* Set the buffer usage threashold */
+ condition_status = lttng_condition_buffer_usage_set_threshold_ratio(
+ tmp_condition, ratio);
+ if (condition_status != LTTNG_CONDITION_STATUS_OK) {
+ fail("Setup error on condition creation");
+ ret = -1;
+ goto error;
+ }
+
+ ret = setup_buffer_usage_condition(tmp_condition, "condition_name",
+ session_name, channel_name, domain_type);
+ if (ret) {
+ fail("Setup error on condition creation");
+ ret = -1;
+ goto error;
+ }
+
+ /* Register the trigger for condition. */
+ tmp_trigger = lttng_trigger_create(tmp_condition, tmp_action);
+ if (!tmp_trigger) {
+ fail("Setup error on trigger creation");
+ ret = -1;
+ goto error;
+ }
+
+ ret = lttng_register_trigger(tmp_trigger);
+ if (ret) {
+ fail("Setup error on trigger registration");
+ ret = -1;
+ goto error;
+ }
+
+ *condition = tmp_condition;
+ *trigger = tmp_trigger;
+ *action = tmp_action;
+ goto end;
+
+error:
+ lttng_action_destroy(tmp_action);
+ lttng_condition_destroy(tmp_condition);
+ lttng_trigger_destroy(tmp_trigger);
+
+end:
+ return ret;
+}
+
+static void test_subscription_twice(const char *session_name,
+ const char *channel_name,
+ const enum lttng_domain_type domain_type)
+{
+ int ret = 0;
+ enum lttng_notification_channel_status nc_status;
+
+ struct lttng_action *action = NULL;
+ struct lttng_notification_channel *notification_channel = NULL;
+ struct lttng_trigger *trigger = NULL;
+
+ struct lttng_condition *condition = NULL;
+
+ ret = register_buffer_usage_notify_trigger(session_name, channel_name,
+ domain_type, BUFFER_USAGE_TYPE_LOW, 0.99, &condition,
+ &action, &trigger);
+ if (ret) {
+ fail("Setup error on trigger registration");
+ goto end;
+ }
+
+ /* Begin testing. */
+ notification_channel = lttng_notification_channel_create(
+ lttng_session_daemon_notification_endpoint);
+ ok(notification_channel, "Notification channel object creation");
+ if (!notification_channel) {
+ goto end;
+ }
+
+ /* Subscribe a valid condition. */
+ nc_status = lttng_notification_channel_subscribe(
+ notification_channel, condition);
+ ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK,
+ "Subscribe to condition");
+
+ /* Subscribing again should fail. */
+ nc_status = lttng_notification_channel_subscribe(
+ notification_channel, condition);
+ ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_ALREADY_SUBSCRIBED,
+ "Subscribe to a condition for which subscription was already done");
+
+end:
+ lttng_unregister_trigger(trigger);
+ lttng_trigger_destroy(trigger);
+ lttng_notification_channel_destroy(notification_channel);
+ lttng_action_destroy(action);
+ lttng_condition_destroy(condition);
+}
+
+static void test_buffer_usage_notification_channel(const char *session_name,
+ const char *channel_name,
+ const enum lttng_domain_type domain_type,
+ const char **argv)
+{
+ int ret = 0;
+ enum lttng_notification_channel_status nc_status;
+
+ struct lttng_action *low_action = NULL;
+ struct lttng_action *high_action = NULL;
+ struct lttng_notification *notification = NULL;
+ struct lttng_notification_channel *notification_channel = NULL;
+ struct lttng_trigger *low_trigger = NULL;
+ struct lttng_trigger *high_trigger = NULL;
+
+ struct lttng_condition *low_condition = NULL;
+ struct lttng_condition *high_condition = NULL;
+
+ const double low_ratio = 0.0;
+ const double high_ratio = 0.90;
+
+ ret = register_buffer_usage_notify_trigger(session_name, channel_name,
+ domain_type, BUFFER_USAGE_TYPE_LOW, low_ratio,
+ &low_condition, &low_action, &low_trigger);
+ if (ret) {
+ fail("Setup error on low trigger registration");
+ goto end;
+ }
+
+ ret = register_buffer_usage_notify_trigger(session_name, channel_name,
+ domain_type, BUFFER_USAGE_TYPE_HIGH, high_ratio,
+ &high_condition, &high_action, &high_trigger);
+ if (ret) {
+ fail("Setup error on high trigger registration");
+ goto end;
+ }
+
+ /* Begin testing */
+ notification_channel = lttng_notification_channel_create(
+ lttng_session_daemon_notification_endpoint);
+ ok(notification_channel, "Notification channel object creation");
+ if (!notification_channel) {
+ goto end;
+ }
+
+ /* Subscribe a valid low condition */
+ nc_status = lttng_notification_channel_subscribe(
+ notification_channel, low_condition);
+ ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK,
+ "Subscribe to low condition");
+
+ /* Subscribe a valid high condition */
+ nc_status = lttng_notification_channel_subscribe(
+ notification_channel, high_condition);
+ ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK,
+ "Subscribe to high condition");
+
+ resume_application();
+
+ /* Wait for notification to happen */
+ stop_consumer(argv);
+ lttng_start_tracing(session_name);
+
+ /* Wait for high notification */
+ do {
+ nc_status = lttng_notification_channel_get_next_notification(
+ notification_channel, ¬ification);
+ } while (nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INTERRUPTED);
+ ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK && notification &&
+ lttng_condition_get_type(lttng_notification_get_condition(
+ notification)) ==
+ LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH,
+ "High notification received after intermediary communication");
+ lttng_notification_destroy(notification);
+ notification = NULL;
+
+ suspend_application();
+ lttng_stop_tracing_no_wait(session_name);
+ resume_consumer(argv);
+ wait_data_pending(session_name);
+
+ /*
+ * Test that communication still work even if there is notification
+ * waiting for consumption.
+ */
+
+ nc_status = lttng_notification_channel_unsubscribe(
+ notification_channel, low_condition);
+ ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK,
+ "Unsubscribe with pending notification");
+
+ nc_status = lttng_notification_channel_subscribe(
+ notification_channel, low_condition);
+ ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK,
+ "Subscribe with pending notification");
+
+ do {
+ nc_status = lttng_notification_channel_get_next_notification(
+ notification_channel, ¬ification);
+ } while (nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INTERRUPTED);
+ ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK && notification &&
+ lttng_condition_get_type(lttng_notification_get_condition(
+ notification)) ==
+ LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW,
+ "Low notification received after intermediary communication");
+ lttng_notification_destroy(notification);
+ notification = NULL;
+
+ /* Stop consumer to force a high notification */
+ stop_consumer(argv);
+ resume_application();
+ lttng_start_tracing(session_name);
+
+ do {
+ nc_status = lttng_notification_channel_get_next_notification(
+ notification_channel, ¬ification);
+ } while (nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INTERRUPTED);
+ ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK && notification &&
+ lttng_condition_get_type(lttng_notification_get_condition(
+ notification)) ==
+ LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH,
+ "High notification received after intermediary communication");
+ lttng_notification_destroy(notification);
+ notification = NULL;
+
+ suspend_application();
+ lttng_stop_tracing_no_wait(session_name);
+ resume_consumer(argv);
+ wait_data_pending(session_name);
+
+ do {
+ nc_status = lttng_notification_channel_get_next_notification(
+ notification_channel, ¬ification);
+ } while (nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INTERRUPTED);
+ ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK && notification &&
+ lttng_condition_get_type(lttng_notification_get_condition(
+ notification)) ==
+ LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW,
+ "Low notification received after re-subscription");
+ lttng_notification_destroy(notification);
+ notification = NULL;
+
+ stop_consumer(argv);
+ resume_application();
+ /* Stop consumer to force a high notification */
+ lttng_start_tracing(session_name);
+
+ do {
+ nc_status = lttng_notification_channel_get_next_notification(
+ notification_channel, ¬ification);
+ } while (nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INTERRUPTED);
+ ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK && notification &&
+ lttng_condition_get_type(lttng_notification_get_condition(
+ notification)) ==
+ LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH,
+ "High notification");
+ lttng_notification_destroy(notification);
+ notification = NULL;
+
+ suspend_application();
+
+ /* Resume consumer to allow event consumption */
+ lttng_stop_tracing_no_wait(session_name);
+ resume_consumer(argv);
+ wait_data_pending(session_name);
+
+ nc_status = lttng_notification_channel_unsubscribe(
+ notification_channel, low_condition);
+ ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK,
+ "Unsubscribe low condition with pending notification");
+
+ nc_status = lttng_notification_channel_unsubscribe(
+ notification_channel, high_condition);
+ ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK,
+ "Unsubscribe high condition with pending notification");
+
+end:
+ lttng_notification_channel_destroy(notification_channel);
+ lttng_trigger_destroy(low_trigger);
+ lttng_trigger_destroy(high_trigger);
+ lttng_action_destroy(low_action);
+ lttng_action_destroy(high_action);
+ lttng_condition_destroy(low_condition);
+ lttng_condition_destroy(high_condition);
+}
+
+static void create_tracepoint_event_rule_trigger(const char *event_pattern,
+ const char *trigger_name,
+ const char *filter,
+ unsigned int exclusion_count,
+ const char * const *exclusions,
+ enum lttng_domain_type domain_type,
+ condition_capture_desc_cb capture_desc_cb,
+ struct lttng_condition **condition,
+ struct lttng_trigger **trigger)
+{
+ enum lttng_event_rule_status event_rule_status;
+ enum lttng_trigger_status trigger_status;
+
+ struct lttng_action *tmp_action = NULL;
+ struct lttng_event_rule *event_rule = NULL;
+ struct lttng_condition *tmp_condition = NULL;
+ struct lttng_trigger *tmp_trigger = NULL;
+ int ret;
+
+ assert(event_pattern);
+ assert(trigger_name);
+ assert(condition);
+ assert(trigger);
+
+ event_rule = lttng_event_rule_tracepoint_create(domain_type);
+ ok(event_rule, "Tracepoint event rule object creation");
+
+ event_rule_status = lttng_event_rule_tracepoint_set_pattern(
+ event_rule, event_pattern);
+ ok(event_rule_status == LTTNG_EVENT_RULE_STATUS_OK,
+ "Setting tracepoint event rule pattern: '%s'",
+ event_pattern);
+
+ if (filter) {
+ event_rule_status = lttng_event_rule_tracepoint_set_filter(
+ event_rule, filter);
+ ok(event_rule_status == LTTNG_EVENT_RULE_STATUS_OK,
+ "Setting tracepoint event rule filter: '%s'",
+ filter);
+ }
+
+ if (exclusions) {
+ int i;
+ bool success = true;
+
+ assert(domain_type == LTTNG_DOMAIN_UST);
+ assert(exclusion_count > 0);
+
+ for (i = 0; i < exclusion_count; i++) {
+ event_rule_status =
+ lttng_event_rule_tracepoint_add_exclusion(
+ event_rule,
+ exclusions[i]);
+ if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) {
+ fail("Setting tracepoint event rule exclusion '%s'.",
+ exclusions[i]);
+ success = false;