Doc: valgrind with babeltrace (glib workaround)
[babeltrace.git] / lib / registry.c
CommitLineData
fc93b2bd
MD
1/*
2 * BabelTrace
3 *
4 * Format Registry
5 *
64fa3fec
MD
6 * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
7 *
8 * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
fc93b2bd 9 *
ccd7e1c8
MD
10 * Permission is hereby granted, free of charge, to any person obtaining a copy
11 * of this software and associated documentation files (the "Software"), to deal
12 * in the Software without restriction, including without limitation the rights
13 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
14 * copies of the Software, and to permit persons to whom the Software is
15 * furnished to do so, subject to the following conditions:
fc93b2bd 16 *
ccd7e1c8
MD
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
fc93b2bd
MD
19 */
20
4c8bfb7e 21#include <babeltrace/format.h>
fc93b2bd
MD
22#include <glib.h>
23#include <errno.h>
7fb21036 24#include <stdio.h>
3122e6f0 25#include <assert.h>
fc93b2bd 26
d2b8ea6b
MD
27struct walk_data {
28 FILE *fp;
29 int iter;
30};
31
fc93b2bd
MD
32static int init_done;
33void __attribute__((constructor)) format_init(void);
34void __attribute__((destructor)) format_finalize(void);
35
36/*
37 * Format registry hash table contains the registered formats. Format
38 * registration is typically performed by a format plugin.
39 * TODO: support plugin unload (unregistration of formats).
40 */
41GHashTable *format_registry;
42
34861b9d 43struct format *bt_lookup_format(bt_intern_str name)
fc93b2bd
MD
44{
45 if (!init_done)
46 return NULL;
7f89ddce 47
fc93b2bd 48 return g_hash_table_lookup(format_registry,
34861b9d 49 (gconstpointer) (unsigned long) name);
fc93b2bd
MD
50}
51
7fb21036
MD
52static void show_format(gpointer key, gpointer value, gpointer user_data)
53{
d2b8ea6b 54 struct walk_data *data = user_data;
7fb21036 55
d2b8ea6b 56 fprintf(data->fp, "%s%s", data->iter ? ", " : "",
7fb21036 57 g_quark_to_string((GQuark) (unsigned long) key));
d2b8ea6b 58 data->iter++;
7fb21036
MD
59}
60
61void bt_fprintf_format_list(FILE *fp)
62{
d2b8ea6b
MD
63 struct walk_data data;
64
7f89ddce
MD
65 assert(fp);
66
d2b8ea6b
MD
67 data.fp = fp;
68 data.iter = 0;
69
70 fprintf(fp, "Formats available: ");
7fb21036
MD
71 if (!init_done)
72 return;
d2b8ea6b
MD
73 g_hash_table_foreach(format_registry, show_format, &data);
74 if (data.iter == 0)
75 fprintf(fp, "<none>");
76 fprintf(fp, ".\n");
7fb21036
MD
77}
78
4c8bfb7e 79int bt_register_format(struct format *format)
fc93b2bd 80{
7f89ddce
MD
81 if (!format)
82 return -EINVAL;
83
fc93b2bd
MD
84 if (!init_done)
85 format_init();
86
4c8bfb7e 87 if (bt_lookup_format(format->name))
fc93b2bd
MD
88 return -EEXIST;
89
90 g_hash_table_insert(format_registry,
4c8bfb7e 91 (gpointer) (unsigned long) format->name,
fc93b2bd
MD
92 format);
93 return 0;
94}
95
96void format_init(void)
97{
0860ab48
MD
98 if (init_done)
99 return;
fc93b2bd
MD
100 format_registry = g_hash_table_new(g_direct_hash, g_direct_equal);
101 assert(format_registry);
102 init_done = 1;
103}
104
4c8bfb7e 105void format_finalize(void)
fc93b2bd
MD
106{
107 g_hash_table_destroy(format_registry);
108}
This page took 0.030028 seconds and 4 git commands to generate.