lib: add user attributes property to metadata, stream, and trace objects

[babeltrace.git] / src / lib / trace-ir / stream-class.c

diff --git a/src/lib/trace-ir/stream-class.c b/src/lib/trace-ir/stream-class.c
index c26cc31cde6c679434f30277122092a9f2a6d172..1afd6e8b7a2702bb6e1618b914346a32007c125a 100644 (file)
--- a/src/lib/trace-ir/stream-class.c
+++ b/src/lib/trace-ir/stream-class.c
@@ -44,6 +44,7 @@
 #include "stream-class.h"
 #include "trace.h"
 #include "utils.h"
+#include "lib/value.h"
 #include "lib/func-status.h"
 
 #define BT_ASSERT_PRE_DEV_STREAM_CLASS_HOT(_sc) \
@@ -56,6 +57,7 @@ void destroy_stream_class(struct bt_object *obj)
 
        BT_LIB_LOGD("Destroying stream class: %!+S", stream_class);
        BT_LOGD_STR("Putting default clock class.");
+       BT_OBJECT_PUT_REF_AND_RESET(stream_class->user_attributes);
        BT_OBJECT_PUT_REF_AND_RESET(stream_class->default_clock_class);
 
        if (stream_class->event_classes) {
@@ -126,12 +128,17 @@ struct bt_stream_class *create_stream_class_with_id(
 
        bt_object_init_shared_with_parent(&stream_class->base,
                destroy_stream_class);
+       stream_class->user_attributes = bt_value_map_create();
+       if (!stream_class->user_attributes) {
+               BT_LIB_LOGE_APPEND_CAUSE(
+                       "Failed to create a map value object.");
+               goto error;
+       }
 
        stream_class->name.str = g_string_new(NULL);
        if (!stream_class->name.str) {
                BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate a GString.");
-               ret = -1;
-               goto end;
+               goto error;
        }
 
        stream_class->id = id;
@@ -406,6 +413,9 @@ void _bt_stream_class_freeze(const struct bt_stream_class *stream_class)
 {
        /* The field classes and default clock class are already frozen */
        BT_ASSERT(stream_class);
+       BT_LIB_LOGD("Freezing stream class's user attributes: %!+v",
+               stream_class->user_attributes);
+       bt_value_freeze(stream_class->user_attributes);
        BT_LIB_LOGD("Freezing stream class: %!+S", stream_class);
        ((struct bt_stream_class *) stream_class)->frozen = true;
 }
@@ -608,6 +618,34 @@ void bt_stream_class_set_assigns_automatic_stream_id(
                "assignment property: %!+S", stream_class);
 }
 
+const struct bt_value *bt_stream_class_borrow_user_attributes_const(
+               const struct bt_stream_class *stream_class)
+{
+       BT_ASSERT_PRE_DEV_NON_NULL(stream_class, "Stream class");
+       return stream_class->user_attributes;
+}
+
+struct bt_value *bt_stream_class_borrow_user_attributes(
+               struct bt_stream_class *stream_class)
+{
+       return (void *) bt_stream_class_borrow_user_attributes_const(
+               (void *) stream_class);
+}
+
+void bt_stream_class_set_user_attributes(
+               struct bt_stream_class *stream_class,
+               const struct bt_value *user_attributes)
+{
+       BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
+       BT_ASSERT_PRE_NON_NULL(user_attributes, "User attributes");
+       BT_ASSERT_PRE(user_attributes->type == BT_VALUE_TYPE_MAP,
+               "User attributes object is not a map value object.");
+       BT_ASSERT_PRE_DEV_STREAM_CLASS_HOT(stream_class);
+       bt_object_put_no_null_check(stream_class->user_attributes);
+       stream_class->user_attributes = (void *) user_attributes;
+       bt_object_get_no_null_check(stream_class->user_attributes);
+}
+
 void bt_stream_class_get_ref(const struct bt_stream_class *stream_class)
 {
        bt_object_get_ref(stream_class);