4 * Babeltrace CTF file system Reader Component
6 * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
8 * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
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:
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
23 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
25 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 #include <babeltrace/plugin/plugin-system.h>
30 #include <babeltrace/plugin/notification/iterator.h>
36 #include "data-stream.h"
38 static bool ctf_fs_debug
;
41 struct bt_notification
*ctf_fs_iterator_get(
42 struct bt_notification_iterator
*iterator
)
48 enum bt_notification_iterator_status
ctf_fs_iterator_next(
49 struct bt_notification_iterator
*iterator
)
51 return BT_NOTIFICATION_ITERATOR_STATUS_UNSUPPORTED
;
55 void ctf_fs_iterator_destroy_data(struct ctf_fs_iterator
*ctf_it
)
61 void ctf_fs_iterator_destroy(struct bt_notification_iterator
*it
)
63 void *data
= bt_notification_iterator_get_private_data(it
);
65 ctf_fs_iterator_destroy_data(data
);
69 enum bt_component_status
ctf_fs_iterator_init(struct bt_component
*source
,
70 struct bt_notification_iterator
*it
)
72 struct ctf_fs_iterator
*ctf_it
;
73 enum bt_component_status ret
= BT_COMPONENT_STATUS_OK
;
76 ctf_it
= g_new0(struct ctf_fs_iterator
, 1);
78 ret
= BT_COMPONENT_STATUS_NOMEM
;
82 ret
= bt_notification_iterator_set_get_cb(it
, ctf_fs_iterator_get
);
87 ret
= bt_notification_iterator_set_next_cb(it
, ctf_fs_iterator_next
);
92 ret
= bt_notification_iterator_set_destroy_cb(it
,
93 ctf_fs_iterator_destroy
);
98 ret
= bt_notification_iterator_set_private_data(it
, ctf_it
);
105 (void) bt_notification_iterator_set_private_data(it
, NULL
);
106 ctf_fs_iterator_destroy_data(ctf_it
);
111 void ctf_fs_destroy_data(struct ctf_fs_component
*component
)
113 if (component
->trace_path
) {
114 g_string_free(component
->trace_path
, TRUE
);
117 ctf_fs_metadata_fini(&component
->metadata
);
118 ctf_fs_data_stream_fini(&component
->data_stream
);
123 void ctf_fs_destroy(struct bt_component
*component
)
125 void *data
= bt_component_get_private_data(component
);
127 ctf_fs_destroy_data(data
);
131 struct ctf_fs_component
*ctf_fs_create(struct bt_value
*params
)
133 struct ctf_fs_component
*ctf_fs
;
134 struct bt_value
*value
;
136 enum bt_value_status ret
;
138 ctf_fs
= g_new0(struct ctf_fs_component
, 1);
143 /* FIXME: should probably look for a source URI */
144 value
= bt_value_map_get(params
, "path");
145 if (!value
|| bt_value_is_null(value
) || !bt_value_is_string(value
)) {
149 ret
= bt_value_string_get(value
, &path
);
150 if (ret
!= BT_VALUE_STATUS_OK
) {
154 ctf_fs
->trace_path
= g_string_new(path
);
155 if (!ctf_fs
->trace_path
) {
159 ctf_fs
->error_fp
= stderr
;
160 ctf_fs
->page_size
= (size_t) getpagesize();
161 ctf_fs_data_stream_init(ctf_fs
, &ctf_fs
->data_stream
);
162 ctf_fs_metadata_set_trace(ctf_fs
);
163 ctf_fs_data_stream_open_streams(ctf_fs
);
167 ctf_fs_destroy_data(ctf_fs
);
172 enum bt_component_status
ctf_fs_init(struct bt_component
*source
,
173 struct bt_value
*params
)
175 struct ctf_fs_component
*ctf_fs
;
176 enum bt_component_status ret
= BT_COMPONENT_STATUS_OK
;
179 ctf_fs_debug
= g_strcmp0(getenv("CTF_FS_DEBUG"), "1") == 0;
180 ctf_fs
= ctf_fs_create(params
);
182 ret
= BT_COMPONENT_STATUS_NOMEM
;
186 ret
= bt_component_set_destroy_cb(source
, ctf_fs_destroy
);
187 if (ret
!= BT_COMPONENT_STATUS_OK
) {
191 ret
= bt_component_set_private_data(source
, ctf_fs
);
192 if (ret
!= BT_COMPONENT_STATUS_OK
) {
196 ret
= bt_component_source_set_iterator_init_cb(source
,
197 ctf_fs_iterator_init
);
198 if (ret
!= BT_COMPONENT_STATUS_OK
) {
205 (void) bt_component_set_private_data(source
, NULL
);
206 ctf_fs_destroy_data(ctf_fs
);