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541b0a11 JG |
1 | #ifndef BABELTRACE_PLUGIN_CTF_FS_H |
2 | #define BABELTRACE_PLUGIN_CTF_FS_H | |
490db841 JG |
3 | |
4 | /* | |
6a29d9fd | 5 | * BabelTrace - CTF on File System Component |
490db841 | 6 | * |
f3bc2010 | 7 | * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
56a1cced | 8 | * Copyright 2016 Philippe Proulx <pproulx@efficios.com> |
490db841 JG |
9 | * |
10 | * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
11 | * | |
12 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
13 | * of this software and associated documentation files (the "Software"), to deal | |
14 | * in the Software without restriction, including without limitation the rights | |
15 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
16 | * copies of the Software, and to permit persons to whom the Software is | |
17 | * furnished to do so, subject to the following conditions: | |
18 | * | |
19 | * The above copyright notice and this permission notice shall be included in | |
20 | * all copies or substantial portions of the Software. | |
21 | * | |
22 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
23 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
24 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
25 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
26 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
27 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
28 | * SOFTWARE. | |
29 | */ | |
30 | ||
f3bc2010 | 31 | #include <babeltrace/babeltrace-internal.h> |
33b34c43 | 32 | #include <babeltrace/component/component.h> |
b6c3dcb2 | 33 | #include "data-stream.h" |
490db841 | 34 | |
56a1cced | 35 | #define CTF_FS_COMPONENT_NAME "fs" |
ea0b4b9e | 36 | #define CTF_FS_COMPONENT_DESCRIPTION \ |
6a29d9fd | 37 | "Component used to read a CTF trace located on a file system." |
490db841 | 38 | |
78bb6992 MD |
39 | BT_HIDDEN |
40 | extern bool ctf_fs_debug; | |
56a1cced | 41 | |
78586d8a JG |
42 | struct bt_notification_heap; |
43 | ||
56a1cced JG |
44 | struct ctf_fs_file { |
45 | struct ctf_fs_component *ctf_fs; | |
46 | GString *path; | |
47 | FILE *fp; | |
48 | off_t size; | |
49 | }; | |
50 | ||
51 | struct ctf_fs_metadata { | |
52 | struct bt_ctf_trace *trace; | |
53 | uint8_t uuid[16]; | |
54 | bool is_uuid_set; | |
55 | int bo; | |
56 | char *text; | |
57 | }; | |
58 | ||
59 | struct ctf_fs_stream { | |
60 | struct ctf_fs_file *file; | |
61 | struct bt_ctf_stream *stream; | |
78586d8a | 62 | /* FIXME There should be many and ctf_fs_stream should not own them. */ |
56a1cced | 63 | struct bt_ctf_notif_iter *notif_iter; |
b6c3dcb2 JG |
64 | /* A stream is assumed to be indexed. */ |
65 | struct index index; | |
56a1cced | 66 | void *mmap_addr; |
fc9a526c JG |
67 | /* Max length of chunk to mmap() when updating the current mapping. */ |
68 | size_t mmap_max_len; | |
69 | /* Length of the current mapping. */ | |
56a1cced | 70 | size_t mmap_len; |
fc9a526c JG |
71 | /* Length of the current mapping which *exists* in the backing file. */ |
72 | size_t mmap_valid_len; | |
73 | /* Offset in the file where the current mapping starts. */ | |
56a1cced | 74 | off_t mmap_offset; |
fc9a526c JG |
75 | /* |
76 | * Offset, in the current mapping, of the address to return on the next | |
77 | * request. | |
78 | */ | |
56a1cced | 79 | off_t request_offset; |
043e2020 | 80 | bool end_reached; |
56a1cced JG |
81 | }; |
82 | ||
760051fa | 83 | struct ctf_fs_iterator { |
78586d8a | 84 | struct bt_notification_heap *pending_notifications; |
5b29e799 JG |
85 | struct bt_notification *current_notification; |
86 | /* | |
87 | * struct ctf_fs_data_stream* which have not yet been associated to a | |
88 | * bt_ctf_stream. The association is performed on the first packet | |
89 | * read by the stream (since, at that point, we have read a packet | |
90 | * header). | |
91 | */ | |
92 | GPtrArray *pending_streams; | |
93 | /* bt_ctf_stream -> ctf_fs_stream */ | |
94 | GHashTable *stream_ht; | |
760051fa JG |
95 | }; |
96 | ||
ea0b4b9e JG |
97 | struct ctf_fs_component_options { |
98 | bool opt_dummy : 1; | |
99 | }; | |
100 | ||
101 | struct ctf_fs_component { | |
56a1cced JG |
102 | GString *trace_path; |
103 | FILE *error_fp; | |
104 | size_t page_size; | |
ea0b4b9e | 105 | struct ctf_fs_component_options options; |
5b29e799 | 106 | struct ctf_fs_metadata *metadata; |
ea0b4b9e JG |
107 | }; |
108 | ||
f3bc2010 | 109 | BT_HIDDEN |
ea0b4b9e | 110 | enum bt_component_status ctf_fs_init(struct bt_component *source, |
f3bc2010 | 111 | struct bt_value *params); |
490db841 | 112 | |
541b0a11 | 113 | #endif /* BABELTRACE_PLUGIN_CTF_FS_H */ |