Introduce contexts
[babeltrace.git] / include / babeltrace / format.h
1 #ifndef _BABELTRACE_FORMAT_H
2 #define _BABELTRACE_FORMAT_H
3
4 /*
5 * BabelTrace
6 *
7 * Trace Format Header
8 *
9 * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
10 *
11 * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
12 *
13 * Permission is hereby granted, free of charge, to any person obtaining a copy
14 * of this software and associated documentation files (the "Software"), to deal
15 * in the Software without restriction, including without limitation the rights
16 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
17 * copies of the Software, and to permit persons to whom the Software is
18 * furnished to do so, subject to the following conditions:
19 *
20 * The above copyright notice and this permission notice shall be included in
21 * all copies or substantial portions of the Software.
22 */
23
24 #include <babeltrace/types.h>
25 #include <stdint.h>
26 #include <stdio.h>
27 #include <glib.h>
28
29 /* forward declaration */
30 struct ctf_stream_pos;
31
32 /* Parent trace descriptor */
33 struct trace_descriptor {
34 };
35
36 struct mmap_stream {
37 int fd;
38 struct cds_list_head list;
39 };
40
41 struct mmap_stream_list {
42 struct cds_list_head head;
43 };
44
45 struct format {
46 GQuark name;
47
48 struct trace_descriptor *(*open_trace)(const char *collection_path,
49 const char *path, int flags,
50 void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset,
51 int whence), FILE *metadata_fp);
52 struct trace_descriptor *(*open_mmap_trace)(
53 struct mmap_stream_list *mmap_list,
54 void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset,
55 int whence), FILE *metadata_fp);
56 void (*close_trace)(struct trace_descriptor *descriptor);
57 };
58
59 extern struct format *bt_lookup_format(GQuark qname);
60 extern void bt_fprintf_format_list(FILE *fp);
61 extern int bt_register_format(struct format *format);
62
63 /* TBD: format unregistration */
64
65 #endif /* _BABELTRACE_FORMAT_H */
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