+/*
+ * ctf_events.c
+ *
+ * Babeltrace Library
+ *
+ * Copyright 2011-2012 EfficiOS Inc. and Linux Foundation
+ *
+ * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Julien Desfossez <julien.desfossez@efficios.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ */
+
+#include <babeltrace/babeltrace.h>
+#include <babeltrace/format.h>
+#include <babeltrace/ctf/events.h>
+#include <babeltrace/ctf-ir/metadata.h>
+#include <glib.h>
+
+/*
+ * thread local storage to store the last error that occured
+ * while reading a field, this variable must be accessed by
+ * bt_ctf_field_error only
+ */
+__thread int bt_ctf_last_field_error = 0;
+
+struct definition *bt_ctf_get_top_level_scope(struct bt_ctf_event *event,
+ enum bt_ctf_scope scope)
+{
+ struct definition *tmp = NULL;
+
+ switch (scope) {
+ case BT_TRACE_PACKET_HEADER:
+ if (!event->stream)
+ goto error;
+ if (event->stream->trace_packet_header)
+ tmp = &event->stream->trace_packet_header->p;
+ break;
+ case BT_STREAM_PACKET_CONTEXT:
+ if (!event->stream)
+ goto error;
+ if (event->stream->stream_packet_context)
+ tmp = &event->stream->stream_packet_context->p;
+ break;
+ case BT_STREAM_EVENT_HEADER:
+ if (!event->stream)
+ goto error;
+ if (event->stream->stream_event_header)
+ tmp = &event->stream->stream_event_header->p;
+ break;
+ case BT_STREAM_EVENT_CONTEXT:
+ if (!event->stream)
+ goto error;
+ if (event->stream->stream_event_context)
+ tmp = &event->stream->stream_event_context->p;
+ break;
+ case BT_EVENT_CONTEXT:
+ if (!event->event)
+ goto error;
+ if (event->event->event_context)
+ tmp = &event->event->event_context->p;
+ break;
+ case BT_EVENT_FIELDS:
+ if (!event->event)
+ goto error;
+ if (event->event->event_fields)
+ tmp = &event->event->event_fields->p;
+ break;
+ }
+ return tmp;
+
+error:
+ return NULL;
+}
+
+struct definition *bt_ctf_get_field(struct bt_ctf_event *event,
+ struct definition *scope,
+ const char *field)
+{
+ struct definition *def;
+
+ if (scope) {
+ def = lookup_definition(scope, field);
+ if (bt_ctf_field_type(def) == CTF_TYPE_VARIANT) {
+ struct definition_variant *variant_definition;
+ variant_definition = container_of(def,
+ struct definition_variant, p);
+ return variant_definition->current_field;
+ }
+ return def;
+ }
+ return NULL;
+}
+
+struct definition *bt_ctf_get_index(struct bt_ctf_event *event,
+ struct definition *field,
+ unsigned int index)
+{
+ struct definition *ret = NULL;
+
+ if (bt_ctf_field_type(field) == CTF_TYPE_ARRAY) {
+ struct definition_array *array_definition;
+ array_definition = container_of(field,
+ struct definition_array, p);
+ ret = array_index(array_definition, index);
+ } else if (bt_ctf_field_type(field) == CTF_TYPE_SEQUENCE) {
+ struct definition_sequence *sequence_definition;
+ sequence_definition = container_of(field,
+ struct definition_sequence, p);
+ ret = sequence_index(sequence_definition, index);
+ }
+ return ret;
+}
+
+const char *bt_ctf_event_name(struct bt_ctf_event *event)
+{
+ struct ctf_event *event_class;
+ struct ctf_stream_class *stream_class;
+
+ if (!event)
+ return NULL;
+ stream_class = event->stream->stream_class;
+ event_class = g_ptr_array_index(stream_class->events_by_id,
+ event->stream->event_id);
+ return g_quark_to_string(event_class->name);
+}
+
+const char *bt_ctf_field_name(const struct definition *def)
+{
+ if (def)
+ return g_quark_to_string(def->name);
+ return NULL;
+}
+
+enum ctf_type_id bt_ctf_field_type(struct definition *def)
+{
+ if (def)
+ return def->declaration->id;
+ return CTF_TYPE_UNKNOWN;
+}
+
+int bt_ctf_get_field_list(struct bt_ctf_event *event,
+ struct definition *scope,
+ struct definition const * const **list,
+ unsigned int *count)
+{
+ switch (bt_ctf_field_type(scope)) {
+ case CTF_TYPE_INTEGER:
+ case CTF_TYPE_FLOAT:
+ case CTF_TYPE_STRING:
+ case CTF_TYPE_ENUM:
+ goto error;
+ case CTF_TYPE_STRUCT:
+ {
+ struct definition_struct *def_struct;
+
+ def_struct = container_of(scope, struct definition_struct, p);
+ if (!def_struct)
+ goto error;
+ if (def_struct->fields->pdata) {
+ *list = (struct definition const* const*) def_struct->fields->pdata;
+ *count = def_struct->fields->len;
+ goto end;
+ } else {
+ goto error;
+ }
+ }
+ case CTF_TYPE_UNTAGGED_VARIANT:
+ goto error;
+ case CTF_TYPE_VARIANT:
+ {
+ struct definition_variant *def_variant;
+
+ def_variant = container_of(scope, struct definition_variant, p);
+ if (!def_variant)
+ goto error;
+ if (def_variant->fields->pdata) {
+ *list = (struct definition const* const*) def_variant->fields->pdata;
+ *count = def_variant->fields->len;
+ goto end;
+ } else {
+ goto error;
+ }
+ }
+ case CTF_TYPE_ARRAY:
+ {
+ struct definition_array *def_array;
+
+ def_array = container_of(scope, struct definition_array, p);
+ if (!def_array)
+ goto error;
+ if (def_array->elems->pdata) {
+ *list = (struct definition const* const*) def_array->elems->pdata;
+ *count = def_array->elems->len;
+ goto end;
+ } else {
+ goto error;
+ }
+ }
+ case CTF_TYPE_SEQUENCE:
+ {
+ struct definition_sequence *def_sequence;
+
+ def_sequence = container_of(scope, struct definition_sequence, p);
+ if (!def_sequence)
+ goto error;
+ if (def_sequence->elems->pdata) {
+ *list = (struct definition const* const*) def_sequence->elems->pdata;
+ *count = def_sequence->elems->len;
+ goto end;
+ } else {
+ goto error;
+ }
+ }
+ default:
+ break;
+ }
+
+end:
+ return 0;
+
+error:
+ *list = NULL;
+ *count = 0;
+ return -1;
+}
+
+uint64_t bt_ctf_get_timestamp(struct bt_ctf_event *event)
+{
+ if (event && event->stream->has_timestamp)
+ return event->stream->timestamp;
+ else
+ return 0;
+}
+
+static void bt_ctf_field_set_error(int error)
+{
+ bt_ctf_last_field_error = error;
+}
+
+int bt_ctf_field_get_error(void)
+{
+ int ret;
+ ret = bt_ctf_last_field_error;
+ bt_ctf_last_field_error = 0;
+
+ return ret;
+}
+
+uint64_t bt_ctf_get_uint64(struct definition *field)
+{
+ unsigned int ret = 0;
+
+ if (field && bt_ctf_field_type(field) == CTF_TYPE_INTEGER)
+ ret = get_unsigned_int(field);
+ else
+ bt_ctf_field_set_error(-EINVAL);
+
+ return ret;
+}
+
+int64_t bt_ctf_get_signed_int64(struct definition *field)
+{
+ int ret = 0;
+
+ if (field && bt_ctf_field_type(field) == CTF_TYPE_INTEGER)
+ ret = get_signed_int(field);
+ else
+ bt_ctf_field_set_error(-EINVAL);
+
+ return ret;
+
+}
+
+char *bt_ctf_get_char_array(struct definition *field)
+{
+ char *ret = NULL;
+
+ if (field && bt_ctf_field_type(field) == CTF_TYPE_ARRAY)
+ ret = get_char_array(field)->str;
+ else
+ bt_ctf_field_set_error(-EINVAL);
+
+ return ret;
+}
+
+char *bt_ctf_get_string(struct definition *field)
+{
+ char *ret = NULL;
+
+ if (field && bt_ctf_field_type(field) == CTF_TYPE_STRING)
+ ret = get_string(field);
+ else
+ bt_ctf_field_set_error(-EINVAL);
+
+ return ret;
+}
projects / babeltrace.git / commitdiff
