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f79cf0f0 PP |
1 | /* |
2 | * packet.c | |
3 | * | |
4 | * Babeltrace CTF IR - Stream packet | |
5 | * | |
6 | * Copyright 2016 Philippe Proulx <pproulx@efficios.com> | |
7 | * | |
8 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
9 | * of this software and associated documentation files (the "Software"), to deal | |
10 | * in the Software without restriction, including without limitation the rights | |
11 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
12 | * copies of the Software, and to permit persons to whom the Software is | |
13 | * furnished to do so, subject to the following conditions: | |
14 | * | |
15 | * The above copyright notice and this permission notice shall be included in | |
16 | * all copies or substantial portions of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
21 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
22 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
23 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
24 | * SOFTWARE. | |
25 | */ | |
26 | ||
27 | #include <babeltrace/ctf-ir/fields-internal.h> | |
28 | #include <babeltrace/ctf-ir/packet.h> | |
29 | #include <babeltrace/ctf-ir/packet-internal.h> | |
30 | #include <babeltrace/ctf-ir/trace.h> | |
31 | #include <babeltrace/ctf-ir/stream-class-internal.h> | |
32 | #include <babeltrace/ctf-ir/stream-class.h> | |
33 | #include <babeltrace/ctf-ir/stream.h> | |
34 | #include <babeltrace/ctf-ir/stream-internal.h> | |
35 | #include <babeltrace/ctf-ir/trace-internal.h> | |
36 | #include <babeltrace/object-internal.h> | |
37 | #include <babeltrace/ref.h> | |
38 | ||
39 | struct bt_ctf_stream *bt_ctf_packet_get_stream(struct bt_ctf_packet *packet) | |
40 | { | |
41 | return packet ? bt_get(packet->stream) : NULL; | |
42 | } | |
43 | ||
44 | struct bt_ctf_field *bt_ctf_packet_get_header( | |
45 | struct bt_ctf_packet *packet) | |
46 | { | |
47 | return packet ? bt_get(packet->header) : NULL; | |
48 | } | |
49 | ||
50 | int bt_ctf_packet_set_header(struct bt_ctf_packet *packet, | |
51 | struct bt_ctf_field *header) | |
52 | { | |
53 | int ret = 0; | |
54 | struct bt_ctf_trace *trace = NULL; | |
55 | struct bt_ctf_stream_class *stream_class = NULL; | |
56 | struct bt_ctf_field_type *header_field_type = NULL; | |
57 | struct bt_ctf_field_type *expected_header_field_type = NULL; | |
58 | ||
03bc92d4 | 59 | if (!packet || packet->frozen) { |
f79cf0f0 PP |
60 | ret = -1; |
61 | goto end; | |
62 | } | |
63 | ||
03bc92d4 JG |
64 | if (!header) { |
65 | goto skip_validation; | |
66 | } | |
67 | ||
f79cf0f0 PP |
68 | stream_class = bt_ctf_stream_get_class(packet->stream); |
69 | assert(stream_class); | |
70 | trace = bt_ctf_stream_class_get_trace(stream_class); | |
71 | assert(trace); | |
72 | header_field_type = bt_ctf_field_get_type(header); | |
73 | assert(header_field_type); | |
74 | expected_header_field_type = bt_ctf_trace_get_packet_header_type(trace); | |
75 | ||
76 | if (bt_ctf_field_type_compare(header_field_type, | |
77 | expected_header_field_type)) { | |
78 | ret = -1; | |
79 | goto end; | |
80 | } | |
81 | ||
03bc92d4 | 82 | skip_validation: |
f79cf0f0 PP |
83 | bt_put(packet->header); |
84 | packet->header = bt_get(header); | |
85 | ||
86 | end: | |
87 | BT_PUT(trace); | |
88 | BT_PUT(stream_class); | |
89 | BT_PUT(header_field_type); | |
90 | BT_PUT(expected_header_field_type); | |
91 | ||
92 | return ret; | |
93 | } | |
94 | ||
95 | struct bt_ctf_field *bt_ctf_packet_get_context( | |
96 | struct bt_ctf_packet *packet) | |
97 | { | |
98 | return packet ? bt_get(packet->context) : NULL; | |
99 | } | |
100 | ||
101 | int bt_ctf_packet_set_context(struct bt_ctf_packet *packet, | |
102 | struct bt_ctf_field *context) | |
103 | { | |
104 | int ret = 0; | |
105 | struct bt_ctf_stream_class *stream_class = NULL; | |
106 | struct bt_ctf_field_type *context_field_type = NULL; | |
107 | struct bt_ctf_field_type *expected_context_field_type = NULL; | |
108 | ||
03bc92d4 | 109 | if (!packet || packet->frozen) { |
f79cf0f0 PP |
110 | ret = -1; |
111 | goto end; | |
112 | } | |
113 | ||
03bc92d4 JG |
114 | if (!context) { |
115 | goto skip_validation; | |
116 | } | |
117 | ||
f79cf0f0 PP |
118 | stream_class = bt_ctf_stream_get_class(packet->stream); |
119 | assert(stream_class); | |
120 | context_field_type = bt_ctf_field_get_type(context); | |
121 | assert(context_field_type); | |
122 | expected_context_field_type = | |
123 | bt_ctf_stream_class_get_packet_context_type(stream_class); | |
124 | ||
125 | if (bt_ctf_field_type_compare(context_field_type, | |
126 | expected_context_field_type)) { | |
127 | ret = -1; | |
128 | goto end; | |
129 | } | |
130 | ||
03bc92d4 | 131 | skip_validation: |
f79cf0f0 PP |
132 | bt_put(packet->context); |
133 | packet->context = bt_get(context); | |
134 | ||
135 | end: | |
136 | BT_PUT(stream_class); | |
137 | BT_PUT(context_field_type); | |
138 | BT_PUT(expected_context_field_type); | |
139 | ||
140 | return ret; | |
141 | } | |
142 | ||
143 | BT_HIDDEN | |
144 | void bt_ctf_packet_freeze(struct bt_ctf_packet *packet) | |
145 | { | |
146 | if (!packet) { | |
5c3b707d | 147 | return; |
f79cf0f0 PP |
148 | } |
149 | ||
918be005 PP |
150 | bt_ctf_field_freeze(packet->header); |
151 | bt_ctf_field_freeze(packet->context); | |
f79cf0f0 | 152 | packet->frozen = 1; |
f79cf0f0 PP |
153 | } |
154 | ||
155 | static | |
156 | void bt_ctf_packet_destroy(struct bt_object *obj) | |
157 | { | |
158 | struct bt_ctf_packet *packet; | |
159 | ||
160 | packet = container_of(obj, struct bt_ctf_packet, base); | |
161 | bt_put(packet->header); | |
162 | bt_put(packet->context); | |
163 | bt_put(packet->stream); | |
164 | g_free(packet); | |
165 | } | |
166 | ||
5c3b707d | 167 | struct bt_ctf_packet *bt_ctf_packet_create( |
f79cf0f0 PP |
168 | struct bt_ctf_stream *stream) |
169 | { | |
170 | struct bt_ctf_packet *packet = NULL; | |
171 | struct bt_ctf_stream_class *stream_class = NULL; | |
172 | struct bt_ctf_trace *trace = NULL; | |
173 | ||
174 | if (!stream || stream->pos.fd >= 0) { | |
175 | goto end; | |
176 | } | |
177 | ||
178 | stream_class = bt_ctf_stream_get_class(stream); | |
179 | assert(stream_class); | |
180 | trace = bt_ctf_stream_class_get_trace(stream_class); | |
181 | assert(trace); | |
182 | packet = g_new0(struct bt_ctf_packet, 1); | |
183 | if (!packet) { | |
184 | goto end; | |
185 | } | |
186 | ||
187 | bt_object_init(packet, bt_ctf_packet_destroy); | |
188 | packet->stream = bt_get(stream); | |
189 | packet->header = bt_ctf_field_create(trace->packet_header_type); | |
03bc92d4 | 190 | if (!packet->header && trace->packet_header_type) { |
f79cf0f0 PP |
191 | BT_PUT(packet); |
192 | goto end; | |
193 | } | |
194 | ||
195 | packet->context = bt_ctf_field_create( | |
196 | stream->stream_class->packet_context_type); | |
03bc92d4 | 197 | if (!packet->context && stream->stream_class->packet_context_type) { |
f79cf0f0 PP |
198 | BT_PUT(packet); |
199 | goto end; | |
200 | } | |
201 | ||
202 | end: | |
203 | BT_PUT(trace); | |
204 | BT_PUT(stream_class); | |
205 | ||
206 | return packet; | |
207 | } |