src/ctf-writer/event.h

   1 #ifndef BABELTRACE_CTF_WRITER_EVENT_INTERNAL_H
   2 #define BABELTRACE_CTF_WRITER_EVENT_INTERNAL_H
   3
   4 /*
   5  * Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   6  *
   7  * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a copy
  10  * of this software and associated documentation files (the "Software"), to deal
  11  * in the Software without restriction, including without limitation the rights
  12  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  13  * copies of the Software, and to permit persons to whom the Software is
  14  * furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included in
  17  * all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  22  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  23  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  24  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  25  * SOFTWARE.
  26  *
  27  * The Common Trace Format (CTF) Specification is available at
  28  * http://www.efficios.com/ctf
  29  */
  30
  31 #include "common/assert.h"
  32 #include "common/macros.h"
  33 #include <babeltrace2-ctf-writer/field-types.h>
  34 #include <babeltrace2-ctf-writer/fields.h>
  35 #include <babeltrace2-ctf-writer/stream-class.h>
  36 #include <babeltrace2-ctf-writer/stream.h>
  37 #include "ctfser/ctfser.h"
  38
  39 #include "assert-pre.h"
  40 #include "event-class.h"
  41 #include "event.h"
  42 #include "fields.h"
  43 #include "field-wrapper.h"
  44 #include "object.h"
  45 #include "stream.h"
  46 #include "validation.h"
  47 #include "values.h"
  48
  49 struct bt_ctf_stream_class;
  50 struct bt_ctf_stream_pos;
  51 struct metadata_context;
  52
  53 struct bt_ctf_event_common {
  54         struct bt_ctf_object base;
  55         struct bt_ctf_event_class_common *class;
  56         struct bt_ctf_field_wrapper *header_field;
  57         struct bt_ctf_field_common *stream_event_context_field;
  58         struct bt_ctf_field_common *context_field;
  59         struct bt_ctf_field_common *payload_field;
  60         int frozen;
  61 };
  62
  63 BT_HIDDEN
  64 int _bt_ctf_event_common_validate(struct bt_ctf_event_common *event);
  65
  66 BT_HIDDEN
  67 void _bt_ctf_event_common_set_is_frozen(struct bt_ctf_event_common *event,
  68                 bool is_frozen);
  69
  70 #ifdef BT_DEV_MODE
  71 # define bt_ctf_event_common_validate   _bt_ctf_event_common_validate
  72 # define bt_ctf_event_common_set_is_frozen      _bt_ctf_event_common_set_is_frozen
  73 #else
  74 # define bt_ctf_event_common_validate(_event)                   0
  75 # define bt_ctf_event_common_set_is_frozen(_event, _is_frozen)
  76 #endif
  77
  78 #define BT_CTF_ASSERT_PRE_EVENT_COMMON_HOT(_event, _name)                       \
  79         BT_CTF_ASSERT_PRE_HOT((_event), (_name), ": event-addr=%p", (_event))
  80
  81 static inline
  82 struct bt_ctf_event_class_common *bt_ctf_event_common_borrow_class(
  83                 struct bt_ctf_event_common *event)
  84 {
  85         BT_ASSERT_DBG(event);
  86         return event->class;
  87 }
  88
  89 typedef void *(*create_field_func)(void *);
  90 typedef void (*release_field_func)(void *);
  91 typedef void *(*create_header_field_func)(void *, void *);
  92 typedef void (*release_header_field_func)(void *, void *);
  93
  94 BT_HIDDEN
  95 int bt_ctf_event_common_initialize(struct bt_ctf_event_common *event,
  96                 struct bt_ctf_event_class_common *event_class,
  97                 struct bt_ctf_clock_class *init_expected_clock_class,
  98                 bool is_shared_with_parent, bt_ctf_object_release_func release_func,
  99                 bt_ctf_validation_flag_copy_field_type_func field_type_copy_func,
 100                 bool must_be_in_trace,
 101                 int (*map_clock_classes_func)(struct bt_ctf_stream_class_common *stream_class,
 102                         struct bt_ctf_field_type_common *packet_context_field_type,
 103                         struct bt_ctf_field_type_common *event_header_field_type),
 104                 create_field_func create_field_func,
 105                 release_field_func release_field_func,
 106                 create_header_field_func create_header_field_func,
 107                 release_header_field_func release_header_field_func);
 108
 109 static inline
 110 struct bt_ctf_field_common *bt_ctf_event_common_borrow_payload(
 111                 struct bt_ctf_event_common *event)
 112 {
 113         struct bt_ctf_field_common *payload = NULL;
 114
 115         BT_CTF_ASSERT_PRE_NON_NULL(event, "Event");
 116
 117         if (!event->payload_field) {
 118                 BT_LOGT("Event has no current payload field: addr=%p, "
 119                         "event-class-name=\"%s\", event-class-id=%" PRId64,
 120                         event, bt_ctf_event_class_common_get_name(event->class),
 121                         bt_ctf_event_class_common_get_id(event->class));
 122                 goto end;
 123         }
 124
 125         payload = event->payload_field;
 126
 127 end:
 128         return payload;
 129 }
 130
 131 static inline
 132 struct bt_ctf_field_common *bt_ctf_event_common_borrow_header(
 133                 struct bt_ctf_event_common *event)
 134 {
 135         struct bt_ctf_field_common *header = NULL;
 136
 137         BT_CTF_ASSERT_PRE_NON_NULL(event, "Event");
 138
 139         if (!event->header_field) {
 140                 BT_LOGT("Event has no current header field: addr=%p, "
 141                         "event-class-name=\"%s\", event-class-id=%" PRId64,
 142                         event, bt_ctf_event_class_common_get_name(event->class),
 143                         bt_ctf_event_class_common_get_id(event->class));
 144                 goto end;
 145         }
 146
 147         header = event->header_field->field;
 148
 149 end:
 150         return header;
 151 }
 152
 153 static inline
 154 struct bt_ctf_field_common *bt_ctf_event_common_borrow_context(
 155                 struct bt_ctf_event_common *event)
 156 {
 157         struct bt_ctf_field_common *context = NULL;
 158
 159         BT_CTF_ASSERT_PRE_NON_NULL(event, "Event");
 160
 161         if (!event->context_field) {
 162                 BT_LOGT("Event has no current context field: addr=%p, "
 163                         "event-class-name=\"%s\", event-class-id=%" PRId64,
 164                         event, bt_ctf_event_class_common_get_name(event->class),
 165                         bt_ctf_event_class_common_get_id(event->class));
 166                 goto end;
 167         }
 168
 169         context = event->context_field;
 170
 171 end:
 172         return context;
 173 }
 174
 175 static inline
 176 struct bt_ctf_field_common *bt_ctf_event_common_borrow_stream_event_context(
 177                 struct bt_ctf_event_common *event)
 178 {
 179         struct bt_ctf_field_common *stream_event_context = NULL;
 180
 181         BT_CTF_ASSERT_PRE_NON_NULL(event, "Event");
 182
 183         if (!event->stream_event_context_field) {
 184                 BT_LOGT("Event has no current stream event context field: addr=%p, "
 185                         "event-class-name=\"%s\", event-class-id=%" PRId64,
 186                         event, bt_ctf_event_class_common_get_name(event->class),
 187                         bt_ctf_event_class_common_get_id(event->class));
 188                 goto end;
 189         }
 190
 191         stream_event_context = event->stream_event_context_field;
 192
 193 end:
 194         return stream_event_context;
 195 }
 196
 197 static inline
 198 void bt_ctf_event_common_finalize(struct bt_ctf_object *obj,
 199                 void (*field_release_func)(void *),
 200                 void (*header_field_release_func)(void *, struct bt_ctf_event_common *))
 201 {
 202         struct bt_ctf_event_common *event = (void *) obj;
 203
 204         BT_LOGD("Destroying event: addr=%p, "
 205                 "event-class-name=\"%s\", event-class-id=%" PRId64,
 206                 event,
 207                 event->class ? bt_ctf_event_class_common_get_name(event->class) : NULL,
 208                 event->class ? bt_ctf_event_class_common_get_id(event->class) : INT64_C(-1));
 209
 210         if (event->header_field) {
 211                 BT_LOGD_STR("Releasing event's header field.");
 212                 header_field_release_func(event->header_field, event);
 213         }
 214
 215         if (event->stream_event_context_field) {
 216                 BT_LOGD_STR("Releasing event's stream event context field.");
 217                 field_release_func(event->stream_event_context_field);
 218         }
 219
 220         if (event->context_field) {
 221                 BT_LOGD_STR("Releasing event's context field.");
 222                 field_release_func(event->context_field);
 223         }
 224
 225         if (event->payload_field) {
 226                 BT_LOGD_STR("Releasing event's payload field.");
 227                 field_release_func(event->payload_field);
 228         }
 229
 230         /*
 231          * Leave this after calling header_field_release_func() because
 232          * this function receives the event object and could need its
 233          * class to perform some cleanup.
 234          */
 235         if (!event->base.parent) {
 236                 /*
 237                  * Event was keeping a reference to its class since it shared no
 238                  * common ancestor with it to guarantee they would both have the
 239                  * same lifetime.
 240                  */
 241                 bt_ctf_object_put_ref(event->class);
 242         }
 243 }
 244
 245 struct bt_ctf_event {
 246         struct bt_ctf_event_common common;
 247 };
 248
 249 struct bt_ctf_event_class {
 250         struct bt_ctf_event_class_common common;
 251 };
 252
 253 BT_HIDDEN
 254 int bt_ctf_event_class_serialize(struct bt_ctf_event_class *event_class,
 255                 struct metadata_context *context);
 256
 257 BT_HIDDEN
 258 int bt_ctf_event_serialize(struct bt_ctf_event *event,
 259                 struct bt_ctfser *pos,
 260                 enum bt_ctf_byte_order native_byte_order);
 261
 262 static inline
 263 struct bt_ctf_stream_class *bt_ctf_event_class_borrow_stream_class(
 264                 struct bt_ctf_event_class *event_class)
 265 {
 266         return BT_CTF_FROM_COMMON(bt_ctf_event_class_common_borrow_stream_class(
 267                 BT_CTF_TO_COMMON(event_class)));
 268 }
 269
 270 #endif /* BABELTRACE_CTF_WRITER_EVENT_INTERNAL_H */