Commit | Line | Data |
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6dc2ca62 | 1 | /* |
d79865b9 | 2 | * BabelTrace - Converter |
6dc2ca62 MD |
3 | * |
4 | * Types registry. | |
5 | * | |
de0ba614 | 6 | * Copyright (c) 2010 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
6dc2ca62 | 7 | * |
de0ba614 MD |
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 | |
6dc2ca62 MD |
21 | */ |
22 | ||
23 | #include <ctf/ctf-types.h> | |
24 | #include <glib.h> | |
d1708134 MD |
25 | #include <errno.h> |
26 | ||
27 | struct type_class { | |
28 | GQuark qname; | |
29 | void (*read)(); | |
30 | size_t (*write)(); | |
31 | }; | |
6dc2ca62 MD |
32 | |
33 | struct type { | |
d1708134 MD |
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. */ | |
6dc2ca62 | 37 | }; |
d1708134 MD |
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 | } |