#include <babeltrace/ctf-ir/stream-class.h>
#include <babeltrace/ctf-ir/stream-class-internal.h>
#include <babeltrace/ctf-ir/trace-internal.h>
+#include <babeltrace/ctf-ir/validation-internal.h>
#include <babeltrace/ctf-ir/utils.h>
#include <babeltrace/ref.h>
#include <babeltrace/ctf-ir/attributes-internal.h>
struct bt_ctf_event *bt_ctf_event_create(struct bt_ctf_event_class *event_class)
{
+ int ret;
+ enum bt_ctf_validation_flag validation_flags =
+ BT_CTF_VALIDATION_FLAG_STREAM |
+ BT_CTF_VALIDATION_FLAG_EVENT;
struct bt_ctf_event *event = NULL;
+ struct bt_ctf_trace *trace = NULL;
struct bt_ctf_stream_class *stream_class = NULL;
+ struct bt_ctf_field_type *packet_header_type = NULL;
+ struct bt_ctf_field_type *packet_context_type = NULL;
+ struct bt_ctf_field_type *event_header_type = NULL;
+ struct bt_ctf_field_type *stream_event_ctx_type = NULL;
+ struct bt_ctf_field_type *event_context_type = NULL;
+ struct bt_ctf_field_type *event_payload_type = NULL;
+ struct bt_ctf_field *event_header = NULL;
+ struct bt_ctf_field *event_context = NULL;
+ struct bt_ctf_field *event_payload = NULL;
+ struct bt_value *environment = NULL;
+ struct bt_ctf_validation_output validation_output = { 0 };
+ int trace_valid = 0;
if (!event_class) {
goto error;
}
stream_class = bt_ctf_event_class_get_stream_class(event_class);
+
/*
* We disallow the creation of an event if its event class has not been
* associated to a stream class.
if (!stream_class) {
goto error;
}
+
+ /* A stream class should always have an existing event header type */
assert(stream_class->event_header_type);
+
+ /* The event class was frozen when added to its stream class */
+ assert(event_class->frozen);
+
+ /* Validate the trace (if any), the stream class, and the event class */
+ trace = bt_ctf_stream_class_get_trace(stream_class);
+ if (trace) {
+ packet_header_type = bt_ctf_trace_get_packet_header_type(trace);
+ trace_valid = trace->valid;
+ assert(trace_valid);
+ environment = trace->environment;
+ }
+
+ packet_context_type = bt_ctf_stream_class_get_packet_context_type(
+ stream_class);
+ event_header_type = bt_ctf_stream_class_get_event_header_type(
+ stream_class);
+ stream_event_ctx_type = bt_ctf_stream_class_get_event_context_type(
+ stream_class);
+ event_context_type = bt_ctf_event_class_get_context_type(event_class);
+ event_payload_type = bt_ctf_event_class_get_payload_type(event_class);
+ ret = bt_ctf_validate_class_types(environment, packet_header_type,
+ packet_context_type, event_header_type, stream_event_ctx_type,
+ event_context_type, event_payload_type, trace_valid,
+ stream_class->valid, event_class->valid,
+ &validation_output, validation_flags);
+ BT_PUT(packet_header_type);
+ BT_PUT(packet_context_type);
+ BT_PUT(event_header_type);
+ BT_PUT(stream_event_ctx_type);
+ BT_PUT(event_context_type);
+ BT_PUT(event_payload_type);
+
+ if (ret) {
+ /*
+ * This means something went wrong during the validation
+ * process, not that the objects are invalid.
+ */
+ goto error;
+ }
+
+ if ((validation_output.valid_flags & validation_flags) !=
+ validation_flags) {
+ /* Invalid trace/stream class/event class */
+ goto error;
+ }
+
+ /*
+ * At this point we know the trace (if associated to the stream
+ * class), the stream class, and the event class, with their
+ * current types, are valid. We may proceed with creating
+ * the event.
+ */
event = g_new0(struct bt_ctf_event, 1);
if (!event) {
goto error;
}
bt_object_init(event, bt_ctf_event_destroy);
- bt_ctf_event_class_freeze(event_class);
+
/*
* event does not share a common ancestor with the event class; it has
* to guarantee its existence by holding a reference. This reference
* lifetime.
*/
event->event_class = bt_get(event_class);
+ event_header =
+ bt_ctf_field_create(validation_output.event_header_type);
- event->event_header = bt_ctf_field_create(
- stream_class->event_header_type);
- if (!event->event_header) {
+ if (!event_header) {
goto error;
}
- if (event_class->context) {
- event->context_payload = bt_ctf_field_create(
- event_class->context);
- if (!event->context_payload) {
+
+ if (validation_output.event_context_type) {
+ event_context = bt_ctf_field_create(
+ validation_output.event_context_type);
+ if (!event_context) {
goto error;
}
}
- event->fields_payload = bt_ctf_field_create(event_class->fields);
- if (!event->fields_payload) {
- goto error;
+
+ if (validation_output.event_payload_type) {
+ event_payload = bt_ctf_field_create(
+ validation_output.event_payload_type);
+ if (!event_payload) {
+ goto error;
+ }
}
+ /*
+ * At this point all the fields are created, potentially from
+ * validated copies of field types, so that the field types and
+ * fields can be replaced in the trace, stream class,
+ * event class, and created event.
+ */
+ bt_ctf_validation_replace_types(trace, stream_class,
+ event_class, &validation_output, validation_flags);
+ BT_MOVE(event->event_header, event_header);
+ BT_MOVE(event->context_payload, event_context);
+ BT_MOVE(event->fields_payload, event_payload);
+
+ /*
+ * Put what was not moved in bt_ctf_validation_replace_types().
+ */
+ bt_ctf_validation_output_put_types(&validation_output);
+
/*
* Freeze the stream class since the event header must not be changed
* anymore.
*/
bt_ctf_stream_class_freeze(stream_class);
+
+ /*
+ * Mark stream class, and event class as valid since
+ * they're all frozen now.
+ */
+ stream_class->valid = 1;
+ event_class->valid = 1;
+
+ /* Put stuff we borrowed from the event class */
BT_PUT(stream_class);
+ BT_PUT(trace);
+
return event;
+
error:
+ bt_ctf_validation_output_put_types(&validation_output);
BT_PUT(event);
BT_PUT(stream_class);
+ BT_PUT(trace);
+ BT_PUT(event_header);
+ BT_PUT(event_context);
+ BT_PUT(event_payload);
+ assert(!packet_header_type);
+ assert(!packet_context_type);
+ assert(!event_header_type);
+ assert(!stream_event_ctx_type);
+ assert(!event_context_type);
+ assert(!event_payload_type);
+
return event;
}
struct bt_ctf_field_type *payload_type;
payload_type = bt_ctf_field_get_type(payload);
- if (payload_type == event->event_class->fields) {
+
+ if (bt_ctf_field_type_compare(payload_type,
+ event->event_class->fields) == 0) {
bt_put(event->fields_payload);
bt_get(payload);
event->fields_payload = payload;
* stream class.
*/
field_type = bt_ctf_field_get_type(header);
- if (field_type != stream_class->event_header_type) {
+ if (bt_ctf_field_type_compare(field_type,
+ stream_class->event_header_type)) {
ret = -1;
goto end;
}
}
field_type = bt_ctf_field_get_type(context);
- if (field_type != event->event_class->context) {
+ if (bt_ctf_field_type_compare(field_type,
+ event->event_class->context)) {
ret = -1;
goto end;
}
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