From: Mathieu Desnoyers Date: Tue, 9 Nov 2021 20:15:47 +0000 (-0500) Subject: Refactoring: event create common code X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=3abfcca9f4a0c8b966db3b8521fb3a609a5ce667;p=lttng-ust.git Refactoring: event create common code Signed-off-by: Mathieu Desnoyers Change-Id: If2c65bac6ef0f0eff478a991d92ab4b5df5f2127 --- diff --git a/src/lib/lttng-ust/lttng-events.c b/src/lib/lttng-ust/lttng-events.c index 0202bb94..15f2a300 100644 --- a/src/lib/lttng-ust/lttng-events.c +++ b/src/lib/lttng-ust/lttng-events.c @@ -661,14 +661,20 @@ struct cds_hlist_head *borrow_hash_table_bucket( } static -int format_event_key(char *key_string, const struct lttng_counter_key *key, +int format_event_key(struct lttng_event_enabler_common *event_enabler, char *key_string, const char *provider_name, const char *event_name) { + struct lttng_event_counter_enabler *event_counter_enabler; const struct lttng_counter_key_dimension *dim; size_t i, left = LTTNG_KEY_TOKEN_STRING_LEN_MAX; + const struct lttng_counter_key *key; - key_string[0] = '\0'; - if (!key || !key->nr_dimensions) + if (event_enabler->enabler_type != LTTNG_EVENT_ENABLER_TYPE_COUNTER) { + return 0; + } + event_counter_enabler = caa_container_of(event_enabler, struct lttng_event_counter_enabler, parent.parent); + key = &event_counter_enabler->key; + if (!key->nr_dimensions) return 0; /* Currently event keys can only be specified on a single dimension. */ if (key->nr_dimensions != 1) @@ -724,8 +730,11 @@ bool match_event_counter_token(struct lttng_ust_event_counter *event_counter, } static -struct lttng_ust_event_common *lttng_ust_event_alloc(struct lttng_event_enabler_common *event_enabler) +struct lttng_ust_event_common *lttng_ust_event_alloc(struct lttng_event_enabler_common *event_enabler, + const struct lttng_ust_event_desc *desc, + const char *key_string) { + switch (event_enabler->enabler_type) { case LTTNG_EVENT_ENABLER_TYPE_RECORDER: { @@ -767,6 +776,8 @@ struct lttng_ust_event_common *lttng_ust_event_alloc(struct lttng_event_enabler_ CDS_INIT_LIST_HEAD(&event_recorder->parent->priv->filter_bytecode_runtime_head); CDS_INIT_LIST_HEAD(&event_recorder->parent->priv->enablers_ref_head); event_recorder_priv->parent.chan = event_recorder_enabler->chan->parent; + event_recorder->priv->parent.parent.desc = desc; + return event_recorder->parent; } case LTTNG_EVENT_ENABLER_TYPE_NOTIFIER: @@ -817,6 +828,7 @@ struct lttng_ust_event_common *lttng_ust_event_alloc(struct lttng_event_enabler_ CDS_INIT_LIST_HEAD(&event_notifier->priv->capture_bytecode_runtime_head); CDS_INIT_LIST_HEAD(&event_notifier_priv->parent.enablers_ref_head); event_notifier->notification_send = lttng_event_notifier_notification_send; + event_notifier_priv->parent.desc = desc; return event_notifier->parent; } case LTTNG_EVENT_ENABLER_TYPE_COUNTER: @@ -861,6 +873,8 @@ struct lttng_ust_event_common *lttng_ust_event_alloc(struct lttng_event_enabler_ event_counter_priv->parent.chan = event_counter_enabler->chan->parent; if (!event_counter->chan->priv->parent.coalesce_hits) event_counter->priv->parent.parent.user_token = event_counter_enabler->parent.parent.user_token; + event_counter->priv->parent.parent.desc = desc; + strcpy(event_counter_priv->key, key_string); return event_counter->parent; } default: @@ -998,7 +1012,7 @@ static int lttng_event_recorder_create(struct lttng_event_recorder_enabler *event_recorder_enabler, const struct lttng_ust_event_desc *desc) { - char name[LTTNG_UST_ABI_SYM_NAME_LEN]; + char name[LTTNG_UST_ABI_SYM_NAME_LEN] = { 0 }; char key_string[LTTNG_KEY_TOKEN_STRING_LEN_MAX] = { 0 }; struct lttng_ust_event_common *event; struct lttng_ust_event_common_private *event_priv_iter; @@ -1006,6 +1020,12 @@ int lttng_event_recorder_create(struct lttng_event_recorder_enabler *event_recor struct cds_hlist_head *name_head; int ret = 0; + if (format_event_key(&event_recorder_enabler->parent.parent, key_string, + desc->probe_desc->provider_name, desc->event_name)) { + ret = -EINVAL; + goto type_error; + } + lttng_ust_format_event_name(desc, name); name_head = borrow_hash_table_bucket(session->priv->events_name_ht.table, LTTNG_UST_EVENT_HT_SIZE, name); @@ -1039,12 +1059,11 @@ int lttng_event_recorder_create(struct lttng_event_recorder_enabler *event_recor goto create_enum_error; } - event = lttng_ust_event_alloc(&event_recorder_enabler->parent.parent); + event = lttng_ust_event_alloc(&event_recorder_enabler->parent.parent, desc, key_string); if (!event) { ret = -ENOMEM; goto alloc_error; } - event->priv->desc = desc; ret = lttng_event_register_to_sessiond(&event_recorder_enabler->parent.parent, event, name); if (ret < 0) { @@ -1060,6 +1079,7 @@ sessiond_register_error: alloc_error: create_enum_error: exist: +type_error: return ret; } @@ -1067,17 +1087,16 @@ static int lttng_event_counter_create(struct lttng_event_counter_enabler *event_counter_enabler, const struct lttng_ust_event_desc *desc) { - struct lttng_counter_key *key = &event_counter_enabler->key; - char name[LTTNG_UST_ABI_SYM_NAME_LEN]; - char key_string[LTTNG_KEY_TOKEN_STRING_LEN_MAX]; + char name[LTTNG_UST_ABI_SYM_NAME_LEN] = { 0 }; + char key_string[LTTNG_KEY_TOKEN_STRING_LEN_MAX] = { 0 }; struct lttng_ust_event_common *event; struct lttng_ust_event_common_private *event_priv_iter; - struct lttng_ust_event_counter_private *event_counter_priv; struct lttng_ust_session *session = event_counter_enabler->chan->parent->session; struct cds_hlist_head *name_head; int ret = 0; - if (format_event_key(key_string, key, desc->probe_desc->provider_name, desc->event_name)) { + if (format_event_key(&event_counter_enabler->parent.parent, key_string, + desc->probe_desc->provider_name, desc->event_name)) { ret = -EINVAL; goto type_error; } @@ -1118,15 +1137,11 @@ int lttng_event_counter_create(struct lttng_event_counter_enabler *event_counter goto create_enum_error; } - event = lttng_ust_event_alloc(&event_counter_enabler->parent.parent); + event = lttng_ust_event_alloc(&event_counter_enabler->parent.parent, desc, key_string); if (!event) { ret = -ENOMEM; goto alloc_error; } - event_counter_priv = caa_container_of(event->priv, struct lttng_ust_event_counter_private, parent.parent); - - event->priv->desc = desc; - strcpy(event_counter_priv->key, key_string); ret = lttng_event_register_to_sessiond(&event_counter_enabler->parent.parent, event, name); if (ret < 0) { @@ -1151,8 +1166,8 @@ static int lttng_event_notifier_create(struct lttng_event_notifier_enabler *event_notifier_enabler, const struct lttng_ust_event_desc *desc) { + char key_string[LTTNG_KEY_TOKEN_STRING_LEN_MAX] = { 0 }; struct lttng_ust_event_common *event; - struct lttng_ust_event_notifier_private *event_notifier_priv; struct lttng_ust_event_common_private *event_priv; struct lttng_event_notifier_group *event_notifier_group = event_notifier_enabler->group; char name[LTTNG_UST_ABI_SYM_NAME_LEN]; @@ -1184,14 +1199,11 @@ int lttng_event_notifier_create(struct lttng_event_notifier_enabler *event_notif if (found) return -EEXIST; - event = lttng_ust_event_alloc(&event_notifier_enabler->parent); + event = lttng_ust_event_alloc(&event_notifier_enabler->parent, desc, key_string); if (!event) { ret = -ENOMEM; goto error; } - event_notifier_priv = caa_container_of(event->priv, struct lttng_ust_event_notifier_private, parent); - event_notifier_priv->parent.desc = desc; - cds_list_add(&event->priv->node, &event_notifier_group->event_notifiers_head); cds_hlist_add_head(&event->priv->name_hlist_node, head);