Commit | Line | Data |
---|---|---|
56e18c4c PP |
1 | #ifndef BABELTRACE_TRACE_IR_EVENT_INTERNAL_H |
2 | #define BABELTRACE_TRACE_IR_EVENT_INTERNAL_H | |
273b65be JG |
3 | |
4 | /* | |
e2f7325d | 5 | * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com> |
de9dd397 | 6 | * Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
273b65be | 7 | * |
273b65be JG |
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 | ||
44c440bc | 27 | /* Protection: this file uses BT_LIB_LOG*() macros directly */ |
7151fb67 | 28 | #ifndef BT_LIB_LOG_SUPPORTED |
c2d9d9cf | 29 | # error Please include "lib/logging.h" before including this file. |
44c440bc PP |
30 | #endif |
31 | ||
578e048b | 32 | #include "lib/assert-pre.h" |
91d81473 | 33 | #include "common/macros.h" |
3fadfbc0 MJ |
34 | #include <babeltrace2/value.h> |
35 | #include <babeltrace2/trace-ir/stream-class.h> | |
36 | #include <babeltrace2/trace-ir/stream.h> | |
3fadfbc0 | 37 | #include <babeltrace2/trace-ir/packet.h> |
3fadfbc0 | 38 | #include <babeltrace2/trace-ir/field.h> |
578e048b MJ |
39 | #include "lib/object.h" |
40 | #include "common/assert.h" | |
273b65be | 41 | #include <glib.h> |
c4f23e30 | 42 | #include <stdbool.h> |
273b65be | 43 | |
578e048b MJ |
44 | #include "event-class.h" |
45 | #include "field.h" | |
46 | #include "field-wrapper.h" | |
47 | #include "packet.h" | |
48 | #include "stream.h" | |
49 | ||
bdb288b3 PP |
50 | #define BT_ASSERT_PRE_DEV_EVENT_HOT(_event) \ |
51 | BT_ASSERT_PRE_DEV_HOT(((const struct bt_event *) (_event)), \ | |
40f4ba76 | 52 | "Event", ": %!+e", (_event)) |
dc3fffef | 53 | |
cb6f1f7d | 54 | struct bt_event { |
83509119 | 55 | struct bt_object base; |
862ca4ed PP |
56 | |
57 | /* Owned by this */ | |
cb6f1f7d | 58 | struct bt_event_class *class; |
862ca4ed | 59 | |
26fc5aed | 60 | /* Owned by this (can be `NULL`) */ |
44c440bc | 61 | struct bt_packet *packet; |
862ca4ed | 62 | |
26fc5aed PP |
63 | /* Owned by this */ |
64 | struct bt_stream *stream; | |
65 | ||
44c440bc PP |
66 | struct bt_field *common_context_field; |
67 | struct bt_field *specific_context_field; | |
cb6f1f7d | 68 | struct bt_field *payload_field; |
44c440bc | 69 | bool frozen; |
273b65be JG |
70 | }; |
71 | ||
273b65be | 72 | BT_HIDDEN |
cb6f1f7d | 73 | void bt_event_destroy(struct bt_event *event); |
273b65be | 74 | |
4ce9f9d0 | 75 | BT_HIDDEN |
cb6f1f7d | 76 | struct bt_event *bt_event_new(struct bt_event_class *event_class); |
4ce9f9d0 | 77 | |
f6ccaed9 | 78 | BT_HIDDEN |
40f4ba76 | 79 | void _bt_event_set_is_frozen(const struct bt_event *event, bool is_frozen); |
f6ccaed9 PP |
80 | |
81 | #ifdef BT_DEV_MODE | |
6c677fb5 | 82 | # define bt_event_set_is_frozen _bt_event_set_is_frozen |
f6ccaed9 | 83 | #else |
6c677fb5 | 84 | # define bt_event_set_is_frozen(_event, _is_frozen) |
f6ccaed9 PP |
85 | #endif |
86 | ||
91d81473 | 87 | __attribute__((unused)) |
3dca2276 | 88 | static inline |
cb6f1f7d | 89 | void _bt_event_reset_dev_mode(struct bt_event *event) |
3dca2276 | 90 | { |
98b15851 | 91 | BT_ASSERT_DBG(event); |
312c056a | 92 | |
44c440bc PP |
93 | if (event->common_context_field) { |
94 | bt_field_set_is_frozen( | |
95 | event->common_context_field, false); | |
96 | bt_field_reset( | |
97 | event->common_context_field); | |
312c056a PP |
98 | } |
99 | ||
44c440bc PP |
100 | if (event->specific_context_field) { |
101 | bt_field_set_is_frozen( | |
102 | event->specific_context_field, false); | |
103 | bt_field_reset(event->specific_context_field); | |
312c056a PP |
104 | } |
105 | ||
106 | if (event->payload_field) { | |
44c440bc | 107 | bt_field_set_is_frozen( |
cb6f1f7d | 108 | event->payload_field, false); |
44c440bc | 109 | bt_field_reset(event->payload_field); |
6c677fb5 | 110 | } |
6c677fb5 PP |
111 | } |
112 | ||
113 | #ifdef BT_DEV_MODE | |
114 | # define bt_event_reset_dev_mode _bt_event_reset_dev_mode | |
115 | #else | |
116 | # define bt_event_reset_dev_mode(_x) | |
117 | #endif | |
312c056a | 118 | |
6c677fb5 PP |
119 | static inline |
120 | void bt_event_reset(struct bt_event *event) | |
121 | { | |
98b15851 | 122 | BT_ASSERT_DBG(event); |
44c440bc | 123 | BT_LIB_LOGD("Resetting event: %!+e", event); |
6c677fb5 | 124 | bt_event_set_is_frozen(event, false); |
6871026b | 125 | bt_object_put_ref_no_null_check(&event->stream->base); |
26fc5aed PP |
126 | event->stream = NULL; |
127 | ||
128 | if (event->packet) { | |
6871026b | 129 | bt_object_put_ref_no_null_check(&event->packet->base); |
26fc5aed PP |
130 | event->packet = NULL; |
131 | } | |
6c677fb5 PP |
132 | } |
133 | ||
134 | static inline | |
135 | void bt_event_recycle(struct bt_event *event) | |
136 | { | |
137 | struct bt_event_class *event_class; | |
138 | ||
98b15851 | 139 | BT_ASSERT_DBG(event); |
6c677fb5 PP |
140 | BT_LIB_LOGD("Recycling event: %!+e", event); |
141 | ||
142 | /* | |
143 | * Those are the important ordered steps: | |
144 | * | |
145 | * 1. Reset the event object (put any permanent reference it | |
146 | * has, unfreeze it and its fields in developer mode, etc.), | |
147 | * but do NOT put its class's reference. This event class | |
148 | * contains the pool to which we're about to recycle this | |
149 | * event object, so we must guarantee its existence thanks | |
150 | * to this existing reference. | |
151 | * | |
152 | * 2. Move the event class reference to our `event_class` | |
153 | * variable so that we can set the event's class member | |
154 | * to NULL before recycling it. We CANNOT do this after | |
65300d60 | 155 | * we put the event class reference because this bt_object_put_ref() |
6c677fb5 PP |
156 | * could destroy the event class, also destroying its |
157 | * event pool, thus also destroying our event object (this | |
158 | * would result in an invalid write access). | |
159 | * | |
160 | * 3. Recycle the event object. | |
161 | * | |
162 | * 4. Put our event class reference. | |
163 | */ | |
164 | bt_event_reset(event); | |
cb6f1f7d | 165 | event_class = event->class; |
98b15851 | 166 | BT_ASSERT_DBG(event_class); |
cb6f1f7d | 167 | event->class = NULL; |
6c677fb5 | 168 | bt_object_pool_recycle_object(&event_class->event_pool, event); |
6871026b | 169 | bt_object_put_ref_no_null_check(&event_class->base); |
6c677fb5 PP |
170 | } |
171 | ||
172 | static inline | |
173 | void bt_event_set_packet(struct bt_event *event, struct bt_packet *packet) | |
174 | { | |
bdb288b3 PP |
175 | BT_ASSERT_PRE_DEV_NON_NULL(event, "Event"); |
176 | BT_ASSERT_PRE_DEV_NON_NULL(packet, "Packet"); | |
177 | BT_ASSERT_PRE_DEV_EVENT_HOT(event); | |
178 | BT_ASSERT_PRE_DEV(bt_event_class_borrow_stream_class( | |
44c440bc | 179 | event->class) == packet->stream->class, |
26e21a82 | 180 | "Packet's stream class and event's stream class differ: " |
44c440bc | 181 | "%![event-]+e, %![packet-]+a", event, packet); |
98b15851 PP |
182 | BT_ASSERT_DBG(event->stream->class->supports_packets); |
183 | BT_ASSERT_DBG(!event->packet); | |
6c677fb5 | 184 | event->packet = packet; |
6871026b | 185 | bt_object_get_ref_no_null_check_no_parent_check(&event->packet->base); |
3f7d4d90 | 186 | BT_LIB_LOGD("Set event's packet: %![event-]+e, %![packet-]+a", |
44c440bc | 187 | event, packet); |
6c677fb5 PP |
188 | } |
189 | ||
26fc5aed PP |
190 | static inline |
191 | void bt_event_set_stream(struct bt_event *event, struct bt_stream *stream) | |
192 | { | |
bdb288b3 PP |
193 | BT_ASSERT_PRE_DEV_NON_NULL(event, "Event"); |
194 | BT_ASSERT_PRE_DEV_NON_NULL(stream, "Stream"); | |
195 | BT_ASSERT_PRE_DEV_EVENT_HOT(event); | |
196 | BT_ASSERT_PRE_DEV(bt_event_class_borrow_stream_class( | |
26fc5aed PP |
197 | event->class) == stream->class, |
198 | "Stream's class and event's stream class differ: " | |
199 | "%![event-]+e, %![stream-]+s", event, stream); | |
98b15851 | 200 | BT_ASSERT_DBG(!event->stream); |
26fc5aed | 201 | event->stream = stream; |
6871026b | 202 | bt_object_get_ref_no_null_check_no_parent_check(&event->stream->base); |
26fc5aed PP |
203 | BT_LIB_LOGD("Set event's stream: %![event-]+e, %![stream-]+s", |
204 | event, stream); | |
205 | } | |
206 | ||
6c677fb5 PP |
207 | static inline |
208 | struct bt_event *bt_event_create(struct bt_event_class *event_class, | |
26fc5aed | 209 | struct bt_packet *packet, struct bt_stream *stream) |
6c677fb5 PP |
210 | { |
211 | struct bt_event *event = NULL; | |
212 | ||
98b15851 PP |
213 | BT_ASSERT_DBG(event_class); |
214 | BT_ASSERT_DBG(stream); | |
6c677fb5 | 215 | event = bt_object_pool_create_object(&event_class->event_pool); |
91d81473 | 216 | if (G_UNLIKELY(!event)) { |
870631a2 PP |
217 | BT_LIB_LOGE_APPEND_CAUSE( |
218 | "Cannot allocate one event from event class's event pool: " | |
44c440bc | 219 | "%![ec-]+E", event_class); |
6c677fb5 PP |
220 | goto end; |
221 | } | |
222 | ||
91d81473 | 223 | if (G_LIKELY(!event->class)) { |
cb6f1f7d | 224 | event->class = event_class; |
6871026b | 225 | bt_object_get_ref_no_null_check(&event_class->base); |
6c677fb5 PP |
226 | } |
227 | ||
26fc5aed PP |
228 | bt_event_set_stream(event, stream); |
229 | ||
230 | if (packet) { | |
98b15851 | 231 | BT_ASSERT_DBG(packet); |
26fc5aed PP |
232 | bt_event_set_packet(event, packet); |
233 | } | |
234 | ||
6c677fb5 PP |
235 | goto end; |
236 | ||
237 | end: | |
238 | return event; | |
239 | } | |
240 | ||
56e18c4c | 241 | #endif /* BABELTRACE_TRACE_IR_EVENT_INTERNAL_H */ |