*
* Types registry.
*
- * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright (c) 2010 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
- * Dual LGPL v2.1/GPL v2 license.
+ * 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.
+ *
+ * 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.
+ *
+ * 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
*/
#include <ctf/ctf-types.h>
#include <glib.h>
+#include <errno.h>
+
+struct type_class {
+ GQuark qname;
+ void (*read)();
+ size_t (*write)();
+};
struct type {
- GQuark name;
- size_t len; /* type length, in bits */
+ struct type_class *class;
+ size_t alignment; /* type alignment, in bits */
+ ssize_t len; /* type length, in bits. -1 for dynamic size. */
};
+
+/*
+ * Type class hash table contains the registered type classes. Type class
+ * registration is typically performed by a plugin.
+ * TODO: support plugin unload (unregistration of type classes).
+ */
+GHashTable *type_classes;
+
+struct type_class *ctf_lookup_type_class(GQuark qname)
+{
+ return g_hash_table_lookup(type_classes,
+ (gconstpointer) (unsigned long) qname)
+}
+
+int ctf_register_type_class(const char *name,
+ void (*read)(),
+ void (*write)())
+{
+ struct type_class tc = g_new(struct type_class, 1);
+ GQuark qname = g_quark_from_string(name);
+
+ if (ctf_lookup_type_class(qname))
+ return -EEXIST;
+
+ g_hash_table_insert(type_classes,
+ (gconstpointer) (unsigned long) qname,
+ tc);
+ return 0;
+}
+
+int ctf_init_types(void)
+{
+ type_classes = g_hash_table_new_full(g_direct_hash, g_direct_equal,
+ NULL, g_free);
+ if (!type_classes)
+ return -ENOMEM;
+ return 0;
+}
+
+int ctf_finalize_types(void)
+{
+ g_hash_table_destroy(type_classes);
+}