ir: add attributes support to event classes
[babeltrace.git] / formats / ctf / ir / event.c
index e51087ba14a05528494ed674f1d00dfa7fa4c8b6..d8def6252464919cea9790dcc4972bc33b1e4138 100644 (file)
@@ -47,54 +47,122 @@ int set_integer_field_value(struct bt_ctf_field *field, uint64_t value);
 
 struct bt_ctf_event_class *bt_ctf_event_class_create(const char *name)
 {
+       int ret;
+       struct bt_object *obj = NULL;
        struct bt_ctf_event_class *event_class = NULL;
 
        if (bt_ctf_validate_identifier(name)) {
-               goto end;
+               goto error;
        }
 
        event_class = g_new0(struct bt_ctf_event_class, 1);
        if (!event_class) {
-               goto end;
+               goto error;
        }
 
        bt_ctf_ref_init(&event_class->ref_count);
        event_class->fields = bt_ctf_field_type_structure_create();
        if (!event_class->fields) {
-               bt_ctf_event_class_put(event_class);
-               event_class = NULL;
-               goto end;
+               goto error;
        }
 
-       event_class->name = g_quark_from_string(name);
-end:
+       event_class->attributes = bt_ctf_attributes_create();
+       if (!event_class->attributes) {
+               goto error;
+       }
+
+       obj = bt_object_integer_create_init(-1);
+       if (!obj) {
+               goto error;
+       }
+
+       ret = bt_ctf_attributes_set_field_value(event_class->attributes,
+               "id", obj);
+       if (ret) {
+               goto error;
+       }
+
+       BT_OBJECT_PUT(obj);
+
+       obj = bt_object_string_create_init(name);
+       if (!obj) {
+               goto error;
+       }
+
+       ret = bt_ctf_attributes_set_field_value(event_class->attributes,
+               "name", obj);
+       if (ret) {
+               goto error;
+       }
+
+       BT_OBJECT_PUT(obj);
+
        return event_class;
+
+error:
+       if (event_class) {
+               bt_ctf_event_class_put(event_class);
+       }
+
+       BT_OBJECT_PUT(obj);
+
+       return NULL;
 }
 
 const char *bt_ctf_event_class_get_name(struct bt_ctf_event_class *event_class)
 {
+       struct bt_object *obj = NULL;
        const char *name = NULL;
 
        if (!event_class) {
                goto end;
        }
 
-       name = g_quark_to_string(event_class->name);
+       obj = bt_ctf_attributes_get_field_value(event_class->attributes,
+               BT_CTF_EVENT_CLASS_ATTR_NAME_INDEX);
+       if (!obj) {
+               goto end;
+       }
+
+       if (bt_object_string_get(obj, &name)) {
+               name = NULL;
+       }
+
 end:
+       BT_OBJECT_PUT(obj);
+
        return name;
 }
 
 int64_t bt_ctf_event_class_get_id(struct bt_ctf_event_class *event_class)
 {
+       struct bt_object *obj = NULL;
        int64_t ret;
 
-       if (!event_class || !event_class->id_set) {
+       if (!event_class) {
+               ret = -1;
+               goto end;
+       }
+
+       obj = bt_ctf_attributes_get_field_value(event_class->attributes,
+               BT_CTF_EVENT_CLASS_ATTR_ID_INDEX);
+       if (!obj) {
+               goto end;
+       }
+
+       if (bt_object_integer_get(obj, &ret)) {
+               ret = -1;
+       }
+
+       if (ret < 0) {
+               /* means ID is not set */
                ret = -1;
                goto end;
        }
 
-       ret = (int64_t) event_class->id;
 end:
+       BT_OBJECT_PUT(obj);
+
        return ret;
 }
 
@@ -102,6 +170,7 @@ int bt_ctf_event_class_set_id(struct bt_ctf_event_class *event_class,
                uint32_t id)
 {
        int ret = 0;
+       struct bt_object *obj = NULL;
 
        if (!event_class) {
                ret = -1;
@@ -117,12 +186,142 @@ int bt_ctf_event_class_set_id(struct bt_ctf_event_class *event_class,
                goto end;
        }
 
-       event_class->id = id;
-       event_class->id_set = 1;
+       obj = bt_ctf_attributes_get_field_value(event_class->attributes,
+               BT_CTF_EVENT_CLASS_ATTR_ID_INDEX);
+       if (!obj) {
+               goto end;
+       }
+
+       if (bt_object_integer_set(obj, id)) {
+               ret = -1;
+               goto end;
+       }
+
+end:
+       BT_OBJECT_PUT(obj);
+
+       return ret;
+}
+
+int bt_ctf_event_class_set_attribute(
+               struct bt_ctf_event_class *event_class, const char *name,
+               struct bt_object *value)
+{
+       int ret = 0;
+
+       if (!event_class || !name || !value || event_class->frozen) {
+               ret = -1;
+               goto end;
+       }
+
+       if (!strcmp(name, "id") || !strcmp(name, "loglevel")) {
+               if (!bt_object_is_integer(value)) {
+                       ret = -1;
+                       goto end;
+               }
+       } else if (!strcmp(name, "name") || !strcmp(name, "model.emf.uri")) {
+               if (!bt_object_is_string(value)) {
+                       ret = -1;
+                       goto end;
+               }
+       } else {
+               /* unknown attribute */
+               ret = -1;
+               goto end;
+       }
+
+       /* "id" special case: >= 0 */
+       if (!strcmp(name, "id")) {
+               int64_t val;
+
+               ret = bt_object_integer_get(value, &val);
+
+               if (ret) {
+                       goto end;
+               }
+
+               if (val < 0) {
+                       ret = -1;
+                       goto end;
+               }
+       }
+
+       ret = bt_ctf_attributes_set_field_value(event_class->attributes,
+               name, value);
+
 end:
        return ret;
 }
 
+int bt_ctf_event_class_get_attribute_count(
+               struct bt_ctf_event_class *event_class)
+{
+       int ret = 0;
+
+       if (!event_class) {
+               ret = -1;
+               goto end;
+       }
+
+       ret = bt_ctf_attributes_get_count(event_class->attributes);
+
+end:
+       return ret;
+}
+
+const char *
+bt_ctf_event_class_get_attribute_name(
+               struct bt_ctf_event_class *event_class, int index)
+{
+       const char *ret;
+
+       if (!event_class) {
+               ret = NULL;
+               goto end;
+       }
+
+       ret = bt_ctf_attributes_get_field_name(event_class->attributes, index);
+
+end:
+       return ret;
+}
+
+struct bt_object *
+bt_ctf_event_class_get_attribute_value(struct bt_ctf_event_class *event_class,
+               int index)
+{
+       struct bt_object *ret;
+
+       if (!event_class) {
+               ret = NULL;
+               goto end;
+       }
+
+       ret = bt_ctf_attributes_get_field_value(event_class->attributes, index);
+
+end:
+       return ret;
+}
+
+struct bt_object *
+bt_ctf_event_class_get_attribute_value_by_name(
+               struct bt_ctf_event_class *event_class, const char *name)
+{
+       struct bt_object *ret;
+
+       if (!event_class || !name) {
+               ret = NULL;
+               goto end;
+       }
+
+       ret = bt_ctf_attributes_get_field_value_by_name(event_class->attributes,
+               name);
+
+end:
+       return ret;
+
+}
+
 struct bt_ctf_stream_class *bt_ctf_event_class_get_stream_class(
                struct bt_ctf_event_class *event_class)
 {
@@ -328,22 +527,14 @@ void bt_ctf_event_class_put(struct bt_ctf_event_class *event_class)
 
 struct bt_ctf_event *bt_ctf_event_create(struct bt_ctf_event_class *event_class)
 {
+       int ret;
+       struct bt_object *obj = NULL;
        struct bt_ctf_event *event = NULL;
 
        if (!event_class) {
                goto end;
        }
 
-       event = g_new0(struct bt_ctf_event, 1);
-       if (!event) {
-               goto end;
-       }
-
-       bt_ctf_ref_init(&event->ref_count);
-       bt_ctf_event_class_get(event_class);
-       bt_ctf_event_class_freeze(event_class);
-       event->event_class = event_class;
-
        /*
         * The event class does not keep ownership of the stream class to
         * which it as been added. Therefore, it can't assume it has been
@@ -351,10 +542,34 @@ struct bt_ctf_event *bt_ctf_event_create(struct bt_ctf_event_class *event_class)
         * associated stream class has been reclaimed.
         */
        if (!event_class->stream_class) {
-               goto error_destroy;
+               goto end;
        }
        assert(event_class->stream_class->event_header_type);
 
+       /* set "stream_id" attribute now that we know its value */
+       obj = bt_object_integer_create_init(event_class->stream_class->id);
+       if (!obj) {
+               goto end;
+       }
+
+       ret = bt_ctf_attributes_set_field_value(event_class->attributes,
+               "stream_id", obj);
+       BT_OBJECT_PUT(obj);
+
+       if (ret) {
+               goto end;
+       }
+
+       event = g_new0(struct bt_ctf_event, 1);
+       if (!event) {
+               goto end;
+       }
+
+       bt_ctf_ref_init(&event->ref_count);
+       bt_ctf_event_class_get(event_class);
+       bt_ctf_event_class_freeze(event_class);
+       event->event_class = event_class;
+
        event->event_header = bt_ctf_field_create(
                event_class->stream_class->event_header_type);
        if (!event->event_header) {
@@ -380,7 +595,10 @@ struct bt_ctf_event *bt_ctf_event_create(struct bt_ctf_event_class *event_class)
 end:
        return event;
 error_destroy:
-       bt_ctf_event_destroy(&event->ref_count);
+       if (event) {
+               bt_ctf_event_destroy(&event->ref_count);
+       }
+
        return NULL;
 }
 
@@ -625,6 +843,9 @@ void bt_ctf_event_class_destroy(struct bt_ctf_ref *ref)
         * bt_ctf_event_class_set_stream_class for explanation.
         */
        event_class = container_of(ref, struct bt_ctf_event_class, ref_count);
+       if (event_class->attributes) {
+               bt_ctf_attributes_destroy(event_class->attributes);
+       }
        if (event_class->context) {
                bt_ctf_field_type_put(event_class->context);
        }
@@ -710,6 +931,7 @@ void bt_ctf_event_class_freeze(struct bt_ctf_event_class *event_class)
        event_class->frozen = 1;
        bt_ctf_field_type_freeze(event_class->context);
        bt_ctf_field_type_freeze(event_class->fields);
+       bt_ctf_attributes_freeze(event_class->attributes);
 }
 
 BT_HIDDEN
@@ -746,24 +968,76 @@ BT_HIDDEN
 int bt_ctf_event_class_serialize(struct bt_ctf_event_class *event_class,
                struct metadata_context *context)
 {
+       int i;
+       int count;
        int ret = 0;
-       int64_t stream_id;
+       struct bt_object *attr_value = NULL;
 
        assert(event_class);
        assert(context);
-       stream_id = bt_ctf_stream_class_get_id(event_class->stream_class);
-       if (stream_id < 0) {
+
+       context->current_indentation_level = 1;
+       g_string_assign(context->field_name, "");
+       g_string_append(context->string, "event {\n");
+       count = bt_ctf_event_class_get_attribute_count(event_class);
+
+       if (count < 0) {
                ret = -1;
                goto end;
        }
 
-       context->current_indentation_level = 1;
-       g_string_assign(context->field_name, "");
-       g_string_append_printf(context->string,
-               "event {\n\tname = \"%s\";\n\tid = %u;\n\tstream_id = %" PRId64 ";\n",
-               g_quark_to_string(event_class->name),
-               event_class->id,
-               stream_id);
+       for (i = 0; i < count; ++i) {
+               const char *attr_name = NULL;
+
+               attr_name = bt_ctf_event_class_get_attribute_name(
+                       event_class, i);
+               attr_value = bt_ctf_event_class_get_attribute_value(
+                       event_class, i);
+
+               if (!attr_name || !attr_value) {
+                       ret = -1;
+                       goto end;
+               }
+
+               switch (bt_object_get_type(attr_value)) {
+               case BT_OBJECT_TYPE_INTEGER:
+               {
+                       int64_t value;
+
+                       ret = bt_object_integer_get(attr_value, &value);
+
+                       if (ret) {
+                               goto end;
+                       }
+
+                       g_string_append_printf(context->string,
+                               "\t%s = %" PRId64 ";\n", attr_name, value);
+                       break;
+               }
+
+               case BT_OBJECT_TYPE_STRING:
+               {
+                       const char *value;
+
+                       ret = bt_object_string_get(attr_value, &value);
+
+                       if (ret) {
+                               goto end;
+                       }
+
+                       g_string_append_printf(context->string,
+                               "\t%s = \"%s\";\n", attr_name, value);
+                       break;
+               }
+
+               default:
+                       /* should never happen */
+                       assert(false);
+                       break;
+               }
+
+               BT_OBJECT_PUT(attr_value);
+       }
 
        if (event_class->context) {
                g_string_append(context->string, "\tcontext := ");
@@ -787,6 +1061,7 @@ int bt_ctf_event_class_serialize(struct bt_ctf_event_class *event_class,
        g_string_append(context->string, "};\n\n");
 end:
        context->current_indentation_level = 0;
+       BT_OBJECT_PUT(attr_value);
        return ret;
 }
 
@@ -867,7 +1142,8 @@ int bt_ctf_event_populate_event_header(struct bt_ctf_event *event)
        id_field = bt_ctf_field_structure_get_field(event->event_header, "id");
        if (id_field) {
                ret = set_integer_field_value(id_field,
-                       (uint64_t) event->event_class->id);
+                       (uint64_t) bt_ctf_event_class_get_id(
+                               event->event_class));
                if (ret) {
                        goto end;
                }
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