/*
* ltt-probes.c
*
- * Copyright 2010 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
* Holds LTTng probes registry.
*
- * Dual LGPL v2.1/GPL v2 license.
+ * Copyright 2010-2012 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; only
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <string.h>
return &entry->tp;
}
+void ltt_probes_prune_field_list(struct lttng_ust_field_list *list)
+{
+ struct tp_field_list_entry *list_entry, *tmp;
+
+ cds_list_for_each_entry_safe(list_entry, tmp, &list->head, head) {
+ cds_list_del(&list_entry->head);
+ free(list_entry);
+ }
+}
+
+/*
+ * called with UST lock held.
+ */
+int ltt_probes_get_field_list(struct lttng_ust_field_list *list)
+{
+ struct lttng_probe_desc *probe_desc;
+ int i;
+
+ CDS_INIT_LIST_HEAD(&list->head);
+ cds_list_for_each_entry(probe_desc, &probe_list, head) {
+ for (i = 0; i < probe_desc->nr_events; i++) {
+ const struct lttng_event_desc *event_desc =
+ probe_desc->event_desc[i];
+ int j;
+
+ for (j = 0; j < event_desc->nr_fields; j++) {
+ const struct lttng_event_field *event_field =
+ &event_desc->fields[j];
+ struct tp_field_list_entry *list_entry;
+
+ list_entry = zmalloc(sizeof(*list_entry));
+ if (!list_entry)
+ goto err_nomem;
+ cds_list_add(&list_entry->head, &list->head);
+ strncpy(list_entry->field.event_name,
+ event_desc->name,
+ LTTNG_UST_SYM_NAME_LEN);
+ list_entry->field.event_name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0';
+ strncpy(list_entry->field.field_name,
+ event_field->name,
+ LTTNG_UST_SYM_NAME_LEN);
+ list_entry->field.field_name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0';
+ switch (event_field->type.atype) {
+ case atype_integer:
+ list_entry->field.type = LTTNG_UST_FIELD_INTEGER;
+ break;
+ case atype_string:
+ list_entry->field.type = LTTNG_UST_FIELD_STRING;
+ break;
+ case atype_array:
+ if (event_field->type.u.array.elem_type.atype != atype_integer
+ || event_field->type.u.array.elem_type.u.basic.integer.encoding == lttng_encode_none)
+ list_entry->field.type = LTTNG_UST_FIELD_OTHER;
+ else
+ list_entry->field.type = LTTNG_UST_FIELD_STRING;
+ break;
+ case atype_sequence:
+ if (event_field->type.u.sequence.elem_type.atype != atype_integer
+ || event_field->type.u.sequence.elem_type.u.basic.integer.encoding == lttng_encode_none)
+ list_entry->field.type = LTTNG_UST_FIELD_OTHER;
+ else
+ list_entry->field.type = LTTNG_UST_FIELD_STRING;
+ break;
+ case atype_float:
+ list_entry->field.type = LTTNG_UST_FIELD_FLOAT;
+ break;
+ case atype_enum:
+ list_entry->field.type = LTTNG_UST_FIELD_ENUM;
+ break;
+ default:
+ list_entry->field.type = LTTNG_UST_FIELD_OTHER;
+ }
+ if (!event_desc->loglevel) {
+ list_entry->field.loglevel = TRACE_DEFAULT;
+ } else {
+ list_entry->field.loglevel = *(*event_desc->loglevel);
+ }
+ }
+ }
+ }
+ if (cds_list_empty(&list->head))
+ list->iter = NULL;
+ else
+ list->iter =
+ cds_list_first_entry(&list->head,
+ struct tp_field_list_entry, head);
+ return 0;
+
+err_nomem:
+ ltt_probes_prune_field_list(list);
+ return -ENOMEM;
+}
+
+/*
+ * Return current iteration position, advance internal iterator to next.
+ * Return NULL if end of list.
+ */
+struct lttng_ust_field_iter *
+ lttng_ust_field_list_get_iter_next(struct lttng_ust_field_list *list)
+{
+ struct tp_field_list_entry *entry;
+
+ if (!list->iter)
+ return NULL;
+ entry = list->iter;
+ if (entry->head.next == &list->head)
+ list->iter = NULL;
+ else
+ list->iter = cds_list_entry(entry->head.next,
+ struct tp_field_list_entry, head);
+ return &entry->field;
+}
+
/*
* marshall all probes/all events and create those that fit the
* wildcard. Add them to the events list as created.
projects / lttng-ust.git / blobdiff