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312c056a PP |
1 | /* |
2 | * Copyright 2018 Philippe Proulx <pproulx@efficios.com> | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
5 | * of this software and associated documentation files (the "Software"), to deal | |
6 | * in the Software without restriction, including without limitation the rights | |
7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
8 | * copies of the Software, and to permit persons to whom the Software is | |
9 | * furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice shall be included in | |
12 | * all copies or substantial portions of the Software. | |
13 | * | |
14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
20 | * SOFTWARE. | |
21 | */ | |
22 | ||
23 | #define BT_LOG_TAG "EVENT-HEADER-FIELD" | |
24 | #include <babeltrace/lib-logging-internal.h> | |
25 | ||
26 | #include <babeltrace/assert-pre-internal.h> | |
27 | #include <babeltrace/ctf-ir/event-header-field.h> | |
44c440bc | 28 | #include <babeltrace/ctf-ir/stream-class-internal.h> |
312c056a PP |
29 | #include <babeltrace/ctf-ir/fields-internal.h> |
30 | #include <babeltrace/ctf-ir/field-wrapper-internal.h> | |
31 | #include <glib.h> | |
32 | ||
33 | struct bt_field *bt_event_header_field_borrow_field( | |
34 | struct bt_event_header_field *header_field) | |
35 | { | |
36 | struct bt_field_wrapper *field_wrapper = (void *) header_field; | |
37 | ||
38 | BT_ASSERT_PRE_NON_NULL(field_wrapper, "Event header field"); | |
312c056a PP |
39 | return (void *) field_wrapper->field; |
40 | } | |
41 | ||
42 | void bt_event_header_field_release(struct bt_event_header_field *header_field) | |
43 | { | |
44 | struct bt_field_wrapper *field_wrapper = (void *) header_field; | |
45 | ||
46 | BT_ASSERT_PRE_NON_NULL(field_wrapper, "Event header field"); | |
47 | ||
48 | /* | |
49 | * Do not recycle because the pool could be destroyed at this | |
50 | * point. This function is only called when there's an error | |
51 | * anyway because the goal of an event header field wrapper is | |
52 | * to eventually move it to an event with bt_event_move_header() | |
53 | * after creating it. | |
54 | */ | |
55 | bt_field_wrapper_destroy(field_wrapper); | |
56 | } | |
44c440bc PP |
57 | |
58 | struct bt_event_header_field *bt_event_header_field_create( | |
59 | struct bt_stream_class *stream_class) | |
60 | { | |
61 | struct bt_field_wrapper *field_wrapper; | |
62 | ||
63 | BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class"); | |
64 | BT_ASSERT_PRE(bt_stream_class_borrow_trace_inline(stream_class), | |
65 | "Stream class is not part of a trace: %!+S", stream_class); | |
66 | BT_ASSERT_PRE(stream_class->event_header_ft, | |
67 | "Stream class has no event header field type: %!+S", | |
68 | stream_class); | |
69 | field_wrapper = bt_field_wrapper_create( | |
70 | &stream_class->event_header_field_pool, | |
71 | (void *) stream_class->event_header_ft); | |
72 | if (!field_wrapper) { | |
73 | BT_LIB_LOGE("Cannot allocate one event header field from stream class: " | |
74 | "%![sc-]+S", stream_class); | |
75 | goto error; | |
76 | } | |
77 | ||
78 | BT_ASSERT(field_wrapper->field); | |
79 | bt_stream_class_freeze(stream_class); | |
80 | goto end; | |
81 | ||
82 | error: | |
83 | if (field_wrapper) { | |
84 | bt_field_wrapper_destroy(field_wrapper); | |
85 | field_wrapper = NULL; | |
86 | } | |
87 | ||
88 | end: | |
89 | return (void *) field_wrapper; | |
90 | } |