libsysprof-analyze: add interface for stracetrace types

Currently, this would need to be implemented by SysprofDocumentSample and
SysprofDocumentAllocation. But we could potentially start allowing many
types to attach a trace if we modifier the capture format to allow it.

src/libsysprof-analyze/sysprof-document-traceable.c

@@ -0,0 +1,44 @@
+/*
+ * sysprof-document-traceable.c
+ *
+ * Copyright 2023 Christian Hergert <chergert@redhat.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#include "config.h"
+
+#include "sysprof-document-traceable.h"
+
+G_DEFINE_INTERFACE (SysprofDocumentTraceable, sysprof_document_traceable, SYSPROF_TYPE_DOCUMENT_FRAME)
+
+static void
+sysprof_document_traceable_default_init (SysprofDocumentTraceableInterface *iface)
+{
+}
+
+guint
+sysprof_document_traceable_get_stack_depth (SysprofDocumentTraceable *self)
+{
+  return SYSPROF_DOCUMENT_TRACEABLE_GET_IFACE (self)->get_stack_depth (self);
+}
+
+guint64
+sysprof_document_traceable_get_stack_address (SysprofDocumentTraceable *self,
+                                              guint                     position)
+{
+  return SYSPROF_DOCUMENT_TRACEABLE_GET_IFACE (self)->get_stack_address (self, position);
+}