Move to babeltrace namespace
[babeltrace.git] / types / types.c
1 /*
2 * BabelTrace - Converter
3 *
4 * Types registry.
5 *
6 * Copyright (c) 2010 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 #include <ctf/ctf-types.h>
24 #include <glib.h>
25 #include <errno.h>
26
27 struct type_class {
28 GQuark qname;
29 void (*read)();
30 size_t (*write)();
31 };
32
33 struct type {
34 struct type_class *class;
35 size_t alignment; /* type alignment, in bits */
36 ssize_t len; /* type length, in bits. -1 for dynamic size. */
37 };
38
39 /*
40 * Type class hash table contains the registered type classes. Type class
41 * registration is typically performed by a plugin.
42 * TODO: support plugin unload (unregistration of type classes).
43 */
44 GHashTable *type_classes;
45
46 struct type_class *ctf_lookup_type_class(GQuark qname)
47 {
48 return g_hash_table_lookup(type_classes,
49 (gconstpointer) (unsigned long) qname)
50 }
51
52 int ctf_register_type_class(const char *name,
53 void (*read)(),
54 void (*write)())
55 {
56 struct type_class tc = g_new(struct type_class, 1);
57 GQuark qname = g_quark_from_string(name);
58
59 if (ctf_lookup_type_class(qname))
60 return -EEXIST;
61
62 g_hash_table_insert(type_classes,
63 (gconstpointer) (unsigned long) qname,
64 tc);
65 return 0;
66 }
67
68 int ctf_init_types(void)
69 {
70 type_classes = g_hash_table_new_full(g_direct_hash, g_direct_equal,
71 NULL, g_free);
72 if (!type_classes)
73 return -ENOMEM;
74 return 0;
75 }
76
77 int ctf_finalize_types(void)
78 {
79 g_hash_table_destroy(type_classes);
80 }
This page took 0.030908 seconds and 5 git commands to generate.