/*
+ * types.c
+ *
* BabelTrace - Converter
*
* Types registry.
*
- * Copyright (c) 2010 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
+ * Copyright 2010, 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
- * This library 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
- * Lesser General Public License for more details.
+ * 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:
*
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
*/
-#include <ctf/ctf-types.h>
+#include <babeltrace/format.h>
#include <glib.h>
#include <errno.h>
-/*
- * Type hash table contains the registered types. Type registration is typically
- * performed by a type plugin.
- * TODO: support plugin unload (unregistration of types).
- */
-GHashTable *types;
+static
+struct type_class *lookup_type_class_scope(GQuark qname,
+ struct declaration_scope *scope)
+{
+ return g_hash_table_lookup(scope->type_classes,
+ (gconstpointer) (unsigned long) qname);
+}
+
+struct type_class *lookup_type_class(GQuark qname,
+ struct declaration_scope *scope)
+{
+ struct type_class *tc;
+
+ while (scope) {
+ tc = lookup_type_class_scope(qname, scope);
+ if (tc)
+ return tc;
+ scope = scope->parent_scope;
+ }
+ return NULL;
+}
-struct type_class *ctf_lookup_type(GQuark qname)
+static void free_type_class(struct type_class *type_class)
{
- return g_hash_table_lookup(type_classes,
- (gconstpointer) (unsigned long) qname)
+ type_class->class_free(type_class);
}
-int ctf_register_type(struct type_class *type_class)
+static void free_type(struct type *type)
{
- if (ctf_lookup_type_class(type_class->name))
+ type->p.type_free(type);
+}
+
+int register_type_class(struct type_class *type_class,
+ struct declaration_scope *scope)
+{
+ /* Only lookup in local scope */
+ if (lookup_type_class_scope(type_class->name, scope))
return -EEXIST;
- g_hash_table_insert(type_classes,
- (gconstpointer) (unsigned long) type_class->name,
+ g_hash_table_insert(scope->type_classes,
+ (gpointer) (unsigned long) type_class->name,
type_class);
return 0;
}
-int ctf_init_types(void)
+void type_class_ref(struct type_class *type_class)
{
- type_classes = g_hash_table_new_full(g_direct_hash, g_direct_equal,
- NULL, g_free);
- if (!type_classes)
- return -ENOMEM;
- return 0;
+ type_class->ref++;
+}
+
+void type_class_unref(struct type_class *type_class)
+{
+ if (!--type_class->ref)
+ free_type_class(type_class);
+}
+
+void type_ref(struct type *type)
+{
+ type->ref++;
+}
+
+void type_unref(struct type *type)
+{
+ if (!--type->ref)
+ free_type(type);
+}
+
+struct declaration_scope *
+new_declaration_scope(struct declaration_scope *parent_scope)
+{
+ struct declaration_scope *scope = g_new(struct declaration_scope, 1);
+
+ scope->type_classes = g_hash_table_new_full(g_direct_hash,
+ g_direct_equal, NULL,
+ (GDestroyNotify) type_class_unref);
+ scope->parent_scope = parent_scope;
+ return scope;
}
-int ctf_finalize_types(void)
+void free_declaration_scope(struct declaration_scope *scope)
{
- g_hash_table_destroy(type_classes);
+ g_hash_table_destroy(scope->type_classes);
+ g_free(scope);
}