lib: add bit array field class and field types

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

diff --git a/src/lib/trace-ir/field-class.c b/src/lib/trace-ir/field-class.c
index d78aefb3962bd7f37f0d92ae09f0dd6ac2cbf0e8..259a32fe62e36112b13d293ac6df73127d9a57d8 100644 (file)
--- a/src/lib/trace-ir/field-class.c
+++ b/src/lib/trace-ir/field-class.c
@@ -64,6 +64,54 @@ void init_field_class(struct bt_field_class *fc, enum bt_field_class_type type,
        fc->type = type;
 }
 
+static
+void destroy_bit_array_field_class(struct bt_object *obj)
+{
+       BT_ASSERT(obj);
+       BT_LIB_LOGD("Destroying bit array field class object: %!+F", obj);
+       g_free(obj);
+}
+
+struct bt_field_class *bt_field_class_bit_array_create(
+               struct bt_trace_class *trace_class, uint64_t length)
+{
+       struct bt_field_class_bit_array *ba_fc = NULL;
+
+       BT_ASSERT_PRE_NON_NULL(trace_class, "Trace class");
+       BT_ASSERT_PRE(length > 0 && length <= 64,
+               "Unsupported length for bit array field class "
+               "(minimum is 1, maximum is 64): length=%" PRIu64, length);
+       BT_LOGD("Creating default bit array field class object.");
+       ba_fc = g_new0(struct bt_field_class_bit_array, 1);
+       if (!ba_fc) {
+               BT_LIB_LOGE_APPEND_CAUSE(
+                       "Failed to allocate one bit array field class.");
+               goto error;
+       }
+
+       init_field_class((void *) ba_fc, BT_FIELD_CLASS_TYPE_BIT_ARRAY,
+               destroy_bit_array_field_class);
+       ba_fc->length = length;
+       BT_LIB_LOGD("Created bit array field class object: %!+F", ba_fc);
+       goto end;
+
+error:
+       BT_OBJECT_PUT_REF_AND_RESET(ba_fc);
+
+end:
+       return (void *) ba_fc;
+}
+
+uint64_t bt_field_class_bit_array_get_length(const struct bt_field_class *fc)
+{
+       const struct bt_field_class_bit_array *ba_fc = (const void *) fc;
+
+       BT_ASSERT_PRE_DEV_NON_NULL(fc, "Field class");
+       BT_ASSERT_PRE_DEV_FC_HAS_ID(fc, BT_FIELD_CLASS_TYPE_BIT_ARRAY,
+               "Field class");
+       return ba_fc->length;
+}
+
 static
 void destroy_bool_field_class(struct bt_object *obj)
 {