#define BT_LOG_TAG "EVENT"
#include <babeltrace/lib-logging-internal.h>
+#include <babeltrace/assert-pre-internal.h>
#include <babeltrace/ctf-ir/fields-internal.h>
#include <babeltrace/ctf-ir/field-types-internal.h>
#include <babeltrace/ctf-ir/clock-class.h>
#include <babeltrace/ctf-ir/stream-internal.h>
#include <babeltrace/ctf-ir/packet.h>
#include <babeltrace/ctf-ir/packet-internal.h>
+#include <babeltrace/ctf-ir/trace.h>
#include <babeltrace/ctf-ir/trace-internal.h>
#include <babeltrace/ctf-ir/validation-internal.h>
#include <babeltrace/ctf-ir/packet-internal.h>
#include <babeltrace/ctf-ir/utils.h>
-#include <babeltrace/ctf-writer/serialize-internal.h>
-#include <babeltrace/ctf-writer/clock-internal.h>
#include <babeltrace/ref.h>
#include <babeltrace/ctf-ir/attributes-internal.h>
#include <babeltrace/compiler-internal.h>
#include <babeltrace/assert-internal.h>
-#include <babeltrace/assert-pre-internal.h>
#include <inttypes.h>
-#define BT_ASSERT_PRE_EVENT_HOT(_event, _name) \
- BT_ASSERT_PRE_HOT((_event), (_name), ": +%!+e", (_event))
-
static
-void bt_event_destroy(struct bt_object *obj);
-
-struct bt_event *bt_event_create(struct bt_event_class *event_class)
+int bt_event_common_validate_types_for_create(
+ struct bt_event_class_common *event_class,
+ struct bt_validation_output *validation_output,
+ bt_validation_flag_copy_field_type_func copy_field_type_func)
{
int ret;
enum bt_validation_flag validation_flags =
BT_VALIDATION_FLAG_STREAM |
BT_VALIDATION_FLAG_EVENT;
- struct bt_event *event = NULL;
- struct bt_trace *trace = NULL;
- struct bt_stream_class *stream_class = NULL;
- struct bt_field_type *packet_header_type = NULL;
- struct bt_field_type *packet_context_type = NULL;
- struct bt_field_type *event_header_type = NULL;
- struct bt_field_type *stream_event_ctx_type = NULL;
- struct bt_field_type *event_context_type = NULL;
- struct bt_field_type *event_payload_type = NULL;
- struct bt_field *event_header = NULL;
- struct bt_field *stream_event_context = NULL;
- struct bt_field *event_context = NULL;
- struct bt_field *event_payload = NULL;
- struct bt_value *environment = NULL;
- struct bt_validation_output validation_output = { 0 };
+ struct bt_trace_common *trace = NULL;
+ struct bt_stream_class_common *stream_class = NULL;
+ struct bt_field_type_common *packet_header_type = NULL;
+ struct bt_field_type_common *packet_context_type = NULL;
+ struct bt_field_type_common *event_header_type = NULL;
+ struct bt_field_type_common *stream_event_ctx_type = NULL;
+ struct bt_field_type_common *event_context_type = NULL;
+ struct bt_field_type_common *event_payload_type = NULL;
int trace_valid = 0;
- struct bt_clock_class *expected_clock_class = NULL;
-
- BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
- BT_LOGD("Creating event object: event-class-addr=%p, "
- "event-class-name=\"%s\", event-class-id=%" PRId64,
- event_class, bt_event_class_get_name(event_class),
- bt_event_class_get_id(event_class));
-
- stream_class = bt_event_class_get_stream_class(event_class);
- BT_ASSERT_PRE(stream_class,
- "Event class is not part of a stream class: %!+E", event_class);
-
- /* The event class was frozen when added to its stream class */
- BT_ASSERT(event_class->frozen);
-
- if (!stream_class->frozen) {
- if (stream_class->clock) {
- expected_clock_class =
- bt_get(stream_class->clock->clock_class);
- }
-
- /*
- * Because this function freezes the stream class,
- * validate that this stream class contains at most a
- * single clock class so that we set its expected clock
- * class for future checks.
- */
- ret = bt_stream_class_validate_single_clock_class(
- stream_class, &expected_clock_class);
- if (ret) {
- BT_LOGW("Event class's stream class or one of its event "
- "classes contains a field type which is not "
- "recursively mapped to the expected "
- "clock class: "
- "stream-class-addr=%p, "
- "stream-class-id=%" PRId64 ", "
- "stream-class-name=\"%s\", "
- "expected-clock-class-addr=%p, "
- "expected-clock-class-name=\"%s\"",
- stream_class, bt_stream_class_get_id(stream_class),
- bt_stream_class_get_name(stream_class),
- expected_clock_class,
- expected_clock_class ?
- bt_clock_class_get_name(expected_clock_class) :
- NULL);
- goto error;
- }
- }
+ struct bt_value *environment = NULL;
- /* Validate the trace (if any), the stream class, and the event class */
- trace = bt_stream_class_get_trace(stream_class);
+ stream_class = bt_event_class_common_borrow_stream_class(event_class);
+ BT_ASSERT(stream_class);
+ trace = bt_stream_class_common_borrow_trace(stream_class);
if (trace) {
- BT_LOGD_STR("Event's class is part of a trace.");
- packet_header_type = bt_trace_get_packet_header_type(trace);
+ BT_LOGD_STR("Event class is part of a trace.");
+ packet_header_type =
+ bt_trace_common_borrow_packet_header_field_type(trace);
trace_valid = trace->valid;
BT_ASSERT(trace_valid);
environment = trace->environment;
}
- packet_context_type = bt_stream_class_get_packet_context_type(
- stream_class);
- event_header_type = bt_stream_class_get_event_header_type(
- stream_class);
- stream_event_ctx_type = bt_stream_class_get_event_context_type(
- stream_class);
- event_context_type = bt_event_class_get_context_type(event_class);
- event_payload_type = bt_event_class_get_payload_type(event_class);
+ packet_context_type =
+ bt_stream_class_common_borrow_packet_context_field_type(
+ stream_class);
+ event_header_type =
+ bt_stream_class_common_borrow_event_header_field_type(
+ stream_class);
+ stream_event_ctx_type =
+ bt_stream_class_common_borrow_event_context_field_type(
+ stream_class);
+ event_context_type =
+ bt_event_class_common_borrow_context_field_type(event_class);
+ event_payload_type =
+ bt_event_class_common_borrow_payload_field_type(event_class);
ret = bt_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);
+ validation_output, validation_flags, copy_field_type_func);
if (ret) {
/*
* This means something went wrong during the validation
goto error;
}
- if ((validation_output.valid_flags & validation_flags) !=
+ if ((validation_output->valid_flags & validation_flags) !=
validation_flags) {
/* Invalid trace/stream class/event class */
BT_LOGW("Invalid trace, stream class, or event class: "
- "valid-flags=0x%x", validation_output.valid_flags);
+ "valid-flags=0x%x", validation_output->valid_flags);
goto error;
}
- /*
- * Safe to automatically map selected fields to the stream's
- * clock's class here because the stream class is about to be
- * frozen.
- */
- if (bt_stream_class_map_clock_class(stream_class,
- validation_output.packet_context_type,
- validation_output.event_header_type)) {
- BT_LOGW_STR("Cannot automatically map selected stream class's "
- "field types to stream class's clock's class.");
- goto error;
- }
+ goto end;
- /*
- * 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_event, 1);
- if (!event) {
- BT_LOGE_STR("Failed to allocate one event.");
- goto error;
- }
+error:
+ bt_validation_output_put_types(validation_output);
+ ret = -1;
- bt_object_init(event, bt_event_destroy);
+end:
+ return ret;
+}
- /*
- * event does not share a common ancestor with the event class; it has
- * to guarantee its existence by holding a reference. This reference
- * shall be released once the event is associated to a stream since,
- * from that point, the event and its class will share the same
- * lifetime.
- */
- event->event_class = bt_get(event_class);
- event->clock_values = g_hash_table_new_full(g_direct_hash,
- g_direct_equal, bt_put, bt_put);
+static
+int bt_event_common_create_fields(
+ struct bt_stream_class_common *stream_class,
+ struct bt_validation_output *validation_output,
+ void *(*create_field_func)(void *),
+ void (*release_field_func)(void *),
+ void *(*create_header_field_func)(void *, void *),
+ void (*release_header_field_func)(void *),
+ struct bt_field_wrapper **header_field,
+ struct bt_field_common **stream_event_context_field,
+ struct bt_field_common **context_field,
+ struct bt_field_common **payload_field)
+{
+ int ret = 0;
- if (validation_output.event_header_type) {
+ if (validation_output->event_header_type) {
BT_LOGD("Creating initial event header field: ft-addr=%p",
- validation_output.event_header_type);
- event_header =
- bt_field_create(validation_output.event_header_type);
- if (!event_header) {
+ validation_output->event_header_type);
+ *header_field =
+ create_header_field_func(stream_class,
+ validation_output->event_header_type);
+ if (!*header_field) {
BT_LOGE_STR("Cannot create initial event header field object.");
goto error;
}
}
- if (validation_output.stream_event_ctx_type) {
+ if (validation_output->stream_event_ctx_type) {
BT_LOGD("Creating initial stream event context field: ft-addr=%p",
- validation_output.stream_event_ctx_type);
- stream_event_context = bt_field_create(
- validation_output.stream_event_ctx_type);
- if (!stream_event_context) {
+ validation_output->stream_event_ctx_type);
+ *stream_event_context_field = create_field_func(
+ validation_output->stream_event_ctx_type);
+ if (!*stream_event_context_field) {
BT_LOGE_STR("Cannot create initial stream event context field object.");
goto error;
}
}
- if (validation_output.event_context_type) {
+ if (validation_output->event_context_type) {
BT_LOGD("Creating initial event context field: ft-addr=%p",
- validation_output.event_context_type);
- event_context = bt_field_create(
- validation_output.event_context_type);
- if (!event_context) {
+ validation_output->event_context_type);
+ *context_field = create_field_func(
+ validation_output->event_context_type);
+ if (!*context_field) {
BT_LOGE_STR("Cannot create initial event context field object.");
goto error;
}
}
- if (validation_output.event_payload_type) {
+ if (validation_output->event_payload_type) {
BT_LOGD("Creating initial event payload field: ft-addr=%p",
- validation_output.event_payload_type);
- event_payload = bt_field_create(
- validation_output.event_payload_type);
- if (!event_payload) {
+ validation_output->event_payload_type);
+ *payload_field = create_field_func(
+ validation_output->event_payload_type);
+ if (!*payload_field) {
BT_LOGE_STR("Cannot create initial event payload field object.");
goto error;
}
}
+ goto end;
+
+error:
+ if (*header_field) {
+ release_header_field_func(*header_field);
+ }
+
+ if (*stream_event_context_field) {
+ release_field_func(*stream_event_context_field);
+ }
+
+ if (*context_field) {
+ release_field_func(*context_field);
+ }
+
+ if (*payload_field) {
+ release_field_func(*payload_field);
+ }
+
+ ret = -1;
+
+end:
+ return ret;
+}
+
+BT_HIDDEN
+int _bt_event_common_validate(struct bt_event_common *event)
+{
+ int ret = 0;
+ struct bt_stream_class_common *stream_class;
+
+ BT_ASSERT(event);
+ if (event->header_field) {
+ ret = bt_field_common_validate_recursive(
+ event->header_field->field);
+ if (ret) {
+ BT_ASSERT_PRE_MSG("Invalid event's header field: "
+ "%![event-]+_e, %![field-]+_f",
+ event, event->header_field->field);
+ goto end;
+ }
+ }
+
+ stream_class = bt_event_class_common_borrow_stream_class(event->class);
+
+ /*
+ * We should not have been able to create the event without associating
+ * the event class to a stream class.
+ */
+ BT_ASSERT(stream_class);
+
+ if (stream_class->event_context_field_type) {
+ ret = bt_field_common_validate_recursive(
+ event->stream_event_context_field);
+ if (ret) {
+ BT_ASSERT_PRE_MSG("Invalid event's stream event context field: "
+ "%![event-]+_e, %![field-]+_f",
+ event, event->stream_event_context_field);
+ goto end;
+ }
+ }
+
+ if (event->class->context_field_type) {
+ ret = bt_field_common_validate_recursive(event->context_field);
+ if (ret) {
+ BT_ASSERT_PRE_MSG("Invalid event's payload field: "
+ "%![event-]+_e, %![field-]+_f",
+ event, event->context_field);
+ goto end;
+ }
+ }
+
+ ret = bt_field_common_validate_recursive(event->payload_field);
+ if (ret) {
+ BT_ASSERT_PRE_MSG("Invalid event's payload field: "
+ "%![event-]+_e, %![field-]+_f",
+ event, event->payload_field);
+ goto end;
+ }
+
+end:
+ return ret;
+}
+
+BT_HIDDEN
+void _bt_event_common_freeze(struct bt_event_common *event)
+{
+ BT_ASSERT(event);
+
+ if (event->frozen) {
+ return;
+ }
+
+ BT_LOGD("Freezing event: addr=%p, "
+ "event-class-name=\"%s\", event-class-id=%" PRId64,
+ event, bt_event_class_common_get_name(event->class),
+ bt_event_class_common_get_id(event->class));
+
+ if (event->header_field) {
+ BT_LOGD_STR("Freezing event's header field.");
+ bt_field_common_set_is_frozen_recursive(
+ event->header_field->field, true);
+ }
+
+ if (event->stream_event_context_field) {
+ BT_LOGD_STR("Freezing event's stream event context field.");
+ bt_field_common_set_is_frozen_recursive(
+ event->stream_event_context_field, true);
+ }
+
+ if (event->context_field) {
+ BT_LOGD_STR("Freezing event's context field.");
+ bt_field_common_set_is_frozen_recursive(event->context_field, true);
+ }
+
+ if (event->payload_field) {
+ BT_LOGD_STR("Freezing event's payload field.");
+ bt_field_common_set_is_frozen_recursive(event->payload_field, true);
+ }
+
+ event->frozen = 1;
+}
+
+BT_HIDDEN
+int bt_event_common_initialize(struct bt_event_common *event,
+ struct bt_event_class_common *event_class,
+ struct bt_clock_class *init_expected_clock_class,
+ bt_object_release_func release_func,
+ bt_validation_flag_copy_field_type_func field_type_copy_func,
+ bool must_be_in_trace,
+ int (*map_clock_classes_func)(struct bt_stream_class_common *stream_class,
+ struct bt_field_type_common *packet_context_field_type,
+ struct bt_field_type_common *event_header_field_type),
+ void *(*create_field_func)(void *),
+ void (*release_field_func)(void *),
+ void *(*create_header_field_func)(void *, void *),
+ void (*release_header_field_func)(void *))
+{
+ int ret;
+ struct bt_trace_common *trace = NULL;
+ struct bt_stream_class_common *stream_class = NULL;
+ struct bt_field_wrapper *event_header = NULL;
+ struct bt_field_common *stream_event_context = NULL;
+ struct bt_field_common *event_context = NULL;
+ struct bt_field_common *event_payload = NULL;
+ struct bt_validation_output validation_output = { 0 };
+ struct bt_clock_class *expected_clock_class =
+ init_expected_clock_class ? bt_get(init_expected_clock_class) :
+ NULL;
+
+ BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
+ BT_LOGD("Initializing common event object: event-class-addr=%p, "
+ "event-class-name=\"%s\", event-class-id=%" PRId64,
+ event_class, bt_event_class_common_get_name(event_class),
+ bt_event_class_common_get_id(event_class));
+
+ stream_class = bt_event_class_common_borrow_stream_class(event_class);
+ BT_ASSERT_PRE(stream_class,
+ "Event class is not part of a stream class: %!+_E", event_class);
+
+ /* The event class was frozen when added to its stream class */
+ BT_ASSERT(event_class->frozen);
+ trace = bt_stream_class_common_borrow_trace(stream_class);
+
+ if (must_be_in_trace) {
+ BT_ASSERT_PRE(trace,
+ "Event class's stream class is not part of a trace: "
+ "%![ec-]+_E, %![ec-]+_S", event_class, stream_class);
+ }
+
+ /*
+ * This must be called before anything that can fail because on
+ * failure, the caller releases the reference to `event` to
+ * destroy it.
+ */
+ bt_object_init(event, release_func);
+
+ if (!stream_class->frozen) {
+ /*
+ * Because this function freezes the stream class,
+ * validate that this stream class contains at most a
+ * single clock class so that we set its expected clock
+ * class for future checks.
+ */
+ ret = bt_stream_class_common_validate_single_clock_class(
+ stream_class, &expected_clock_class);
+ if (ret) {
+ BT_LOGW("Event class's stream class or one of its event "
+ "classes contains a field type which is not "
+ "recursively mapped to the expected "
+ "clock class: "
+ "stream-class-addr=%p, "
+ "stream-class-id=%" PRId64 ", "
+ "stream-class-name=\"%s\", "
+ "expected-clock-class-addr=%p, "
+ "expected-clock-class-name=\"%s\"",
+ stream_class,
+ bt_stream_class_common_get_id(stream_class),
+ bt_stream_class_common_get_name(stream_class),
+ expected_clock_class,
+ expected_clock_class ?
+ bt_clock_class_get_name(expected_clock_class) :
+ NULL);
+ goto error;
+ }
+ }
+
+ /* Validate the trace, the stream class, and the event class */
+ ret = bt_event_common_validate_types_for_create(
+ event_class, &validation_output, field_type_copy_func);
+ if (ret) {
+ /* bt_event_common_validate_types_for_create() logs errors */
+ goto error;
+ }
+
+ if (map_clock_classes_func) {
+ /*
+ * Safe to automatically map selected fields to the
+ * stream's clock's class here because the stream class
+ * is about to be frozen.
+ */
+ if (map_clock_classes_func(stream_class,
+ validation_output.packet_context_type,
+ validation_output.event_header_type)) {
+ BT_LOGW_STR("Cannot automatically map selected stream class's "
+ "field types to stream class's clock's class.");
+ goto error;
+ }
+ }
+
+ /*
+ * event does not share a common ancestor with the event class; it has
+ * to guarantee its existence by holding a reference. This reference
+ * shall be released once the event is associated to a stream since,
+ * from that point, the event and its class will share the same
+ * lifetime.
+ */
+ event->class = bt_get(event_class);
+
+ ret = bt_event_common_create_fields(stream_class,
+ &validation_output,
+ create_field_func, release_field_func,
+ create_header_field_func, release_header_field_func,
+ &event_header, &stream_event_context, &event_context,
+ &event_payload);
+ if (ret) {
+ /* bt_event_common_create_fields() logs errors */
+ 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_validation_replace_types(trace, stream_class,
- event_class, &validation_output, validation_flags);
- BT_MOVE(event->event_header, event_header);
- BT_MOVE(event->stream_event_context, stream_event_context);
- BT_MOVE(event->context_payload, event_context);
- BT_MOVE(event->fields_payload, event_payload);
+ bt_validation_replace_types(trace, stream_class, event_class,
+ &validation_output,
+ BT_VALIDATION_FLAG_STREAM | BT_VALIDATION_FLAG_EVENT);
+ event->header_field = event_header;
+ event_header = NULL;
+ event->stream_event_context_field = stream_event_context;
+ stream_event_context = NULL;
+ event->context_field = event_context;
+ event_context = NULL;
+ event->payload_field = event_payload;
+ event_payload = NULL;
/*
* Put what was not moved in bt_validation_replace_types().
* Freeze the stream class since the event header must not be changed
* anymore.
*/
- bt_stream_class_freeze(stream_class);
+ bt_stream_class_common_freeze(stream_class);
/*
* It is safe to set the stream class's unique clock class
event_class->valid = 1;
/* Put stuff we borrowed from the event class */
- BT_PUT(stream_class);
- BT_PUT(trace);
- BT_LOGD("Created event object: addr=%p, event-class-name=\"%s\", "
+ BT_LOGD("Initialized event object: addr=%p, event-class-name=\"%s\", "
"event-class-id=%" PRId64,
- event, bt_event_class_get_name(event->event_class),
- bt_event_class_get_id(event_class));
- return event;
+ event, bt_event_class_common_get_name(event->class),
+ bt_event_class_common_get_id(event->class));
+ goto end;
error:
bt_validation_output_put_types(&validation_output);
- BT_PUT(event);
- BT_PUT(stream_class);
- BT_PUT(trace);
- BT_PUT(event_header);
- BT_PUT(stream_event_context);
- BT_PUT(event_context);
- BT_PUT(event_payload);
bt_put(expected_clock_class);
- BT_ASSERT(!packet_header_type);
- BT_ASSERT(!packet_context_type);
- BT_ASSERT(!event_header_type);
- BT_ASSERT(!stream_event_ctx_type);
- BT_ASSERT(!event_context_type);
- BT_ASSERT(!event_payload_type);
- return event;
-}
-struct bt_event_class *bt_event_get_class(struct bt_event *event)
-{
- BT_ASSERT_PRE_NON_NULL(event, "Event");
- return bt_get(bt_event_borrow_event_class(event));
-}
+ if (event_header) {
+ release_header_field_func(event_header);
+ }
-BT_HIDDEN
-struct bt_stream *bt_event_borrow_stream(struct bt_event *event)
-{
- struct bt_stream *stream = NULL;
+ if (stream_event_context) {
+ release_field_func(stream_event_context);
+ }
- BT_ASSERT(event);
+ if (event_context) {
+ release_field_func(event_context);
+ }
- /*
- * If the event has a parent, then this is its (writer) stream.
- * If the event has no parent, then if it has a packet, this
- * is its (non-writer) stream.
- */
- if (event->base.parent) {
- stream = (struct bt_stream *) bt_object_borrow_parent(event);
- } else {
- if (event->packet) {
- stream = event->packet->stream;
- }
+ if (event_payload) {
+ release_field_func(event_payload);
}
- return stream;
+ ret = -1;
+
+end:
+ return ret;
}
-struct bt_stream *bt_event_get_stream(struct bt_event *event)
+static
+void bt_event_header_field_recycle(struct bt_field_wrapper *field_wrapper,
+ struct bt_stream_class *stream_class)
{
- BT_ASSERT_PRE_NON_NULL(event, "Event");
- return bt_get(bt_event_borrow_stream(event));
+ BT_ASSERT(field_wrapper);
+ BT_LIB_LOGD("Recycling event header field: "
+ "addr=%p, %![sc-]+S, %![field-]+f", field_wrapper,
+ stream_class, field_wrapper->field);
+ bt_object_pool_recycle_object(
+ &stream_class->event_header_field_pool,
+ field_wrapper);
}
-int bt_event_set_payload(struct bt_event *event, const char *name,
- struct bt_field *payload)
+static
+struct bt_field_wrapper *create_event_header_field(
+ struct bt_stream_class *stream_class,
+ struct bt_field_type_common *ft)
{
- int ret = 0;
-
- BT_ASSERT_PRE_NON_NULL(event, "Event");
- BT_ASSERT_PRE_NON_NULL(payload, "Payload field");
- BT_ASSERT_PRE_EVENT_HOT(event, "Event");
-
- if (name) {
- ret = bt_field_structure_set_field_by_name(
- event->fields_payload, name, payload);
- } else {
- BT_ASSERT_PRE(bt_field_type_compare(payload->type,
- event->event_class->fields) == 0,
- "Payload field's type is different from the "
- "expected field type: %![event-]+e, %![ft-]+F, "
- "%![expected-ft-]+F",
- event, payload->type, event->event_class->fields);
+ struct bt_field_wrapper *field_wrapper = NULL;
- bt_put(event->fields_payload);
- bt_get(payload);
- event->fields_payload = payload;
+ field_wrapper = bt_field_wrapper_create(
+ &stream_class->event_header_field_pool, (void *) ft);
+ if (!field_wrapper) {
+ goto error;
}
- if (ret) {
- BT_LOGW("Failed to set event's payload field: event-addr=%p, "
- "event-class-name=\"%s\", event-class-id=%" PRId64 ", "
- "payload-field-name=\"%s\", payload-field-addr=%p",
- event, bt_event_class_get_name(event->event_class),
- bt_event_class_get_id(event->event_class),
- name, payload);
- } else {
- BT_LOGV("Set event's payload field: event-addr=%p, "
- "event-class-name=\"%s\", event-class-id=%" PRId64 ", "
- "payload-field-name=\"%s\", payload-field-addr=%p",
- event, bt_event_class_get_name(event->event_class),
- bt_event_class_get_id(event->event_class),
- name, payload);
+ goto end;
+
+error:
+ if (field_wrapper) {
+ bt_event_header_field_recycle(field_wrapper, stream_class);
+ field_wrapper = NULL;
}
- return ret;
+end:
+ return field_wrapper;
}
-struct bt_field *bt_event_get_event_payload(struct bt_event *event)
+BT_HIDDEN
+struct bt_event *bt_event_new(struct bt_event_class *event_class)
{
- struct bt_field *payload = NULL;
+ int ret;
+ struct bt_event *event = NULL;
+ struct bt_stream_class *stream_class;
- BT_ASSERT_PRE_NON_NULL(event, "Event");
+ event = g_new0(struct bt_event, 1);
+ if (!event) {
+ BT_LOGE_STR("Failed to allocate one event.");
+ goto error;
+ }
- if (!event->fields_payload) {
- BT_LOGV("Event has no current payload field: addr=%p, "
- "event-class-name=\"%s\", event-class-id=%" PRId64,
- event, bt_event_class_get_name(event->event_class),
- bt_event_class_get_id(event->event_class));
- goto end;
+ ret = bt_event_common_initialize(BT_TO_COMMON(event),
+ BT_TO_COMMON(event_class), NULL, NULL,
+ (bt_validation_flag_copy_field_type_func) bt_field_type_copy,
+ true, NULL,
+ (void *) bt_field_create_recursive,
+ (void *) bt_field_destroy_recursive,
+ (void *) create_event_header_field,
+ (void *) bt_event_header_field_recycle);
+ if (ret) {
+ /* bt_event_common_initialize() logs errors */
+ goto error;
}
- payload = event->fields_payload;
- bt_get(payload);
+ bt_object_set_is_shared((void *) event, false);
+ event->clock_values = g_hash_table_new_full(g_direct_hash,
+ g_direct_equal, NULL,
+ (GDestroyNotify) bt_clock_value_recycle);
+ BT_ASSERT(event->clock_values);
+ stream_class = bt_event_class_borrow_stream_class(event_class);
+ BT_ASSERT(stream_class);
-end:
- return payload;
-}
+ if (stream_class->common.clock_class) {
+ struct bt_clock_value *clock_value;
-int bt_event_set_event_payload(struct bt_event *event,
- struct bt_field *payload)
-{
- return bt_event_set_payload(event, NULL, payload);
-}
+ clock_value = bt_clock_value_create(
+ stream_class->common.clock_class);
+ if (!clock_value) {
+ BT_LIB_LOGE("Cannot create clock value from clock class: "
+ "%![cc-]+K", stream_class->common.clock_class);
+ goto error;
+ }
-struct bt_field *bt_event_get_payload(struct bt_event *event,
- const char *name)
-{
- struct bt_field *field = NULL;
+ g_hash_table_insert(event->clock_values,
+ stream_class->common.clock_class, clock_value);
+ }
- BT_ASSERT_PRE_NON_NULL(event, "Event");
+ goto end;
- if (name) {
- field = bt_field_structure_get_field_by_name(
- event->fields_payload, name);
- } else {
- field = event->fields_payload;
- bt_get(field);
+error:
+ if (event) {
+ bt_event_destroy(event);
+ event = NULL;
}
- return field;
+end:
+ return event;
}
-struct bt_field *bt_event_get_payload_by_index(
- struct bt_event *event, uint64_t index)
+BT_ASSERT_PRE_FUNC
+static inline
+void _bt_event_reset_dev_mode(struct bt_event *event)
{
- struct bt_field *field = NULL;
+ GHashTableIter iter;
+ gpointer key, value;
- BT_ASSERT_PRE_NON_NULL(event, "Event");
- field = bt_field_structure_get_field_by_index(event->fields_payload,
- index);
+ BT_ASSERT(event);
- return field;
-}
+ if (event->common.header_field) {
+ bt_field_common_set_is_frozen_recursive(
+ event->common.header_field->field, false);
+ bt_field_common_reset_recursive(
+ event->common.header_field->field);
+ }
-struct bt_field *bt_event_get_header(struct bt_event *event)
-{
- struct bt_field *header = NULL;
+ if (event->common.stream_event_context_field) {
+ bt_field_common_set_is_frozen_recursive(
+ event->common.stream_event_context_field, false);
+ bt_field_common_reset_recursive(
+ event->common.stream_event_context_field);
+ }
- BT_ASSERT_PRE_NON_NULL(event, "Event");
+ if (event->common.context_field) {
+ bt_field_common_set_is_frozen_recursive(
+ event->common.context_field, false);
+ bt_field_common_reset_recursive(event->common.context_field);
+ }
- if (!event->event_header) {
- BT_LOGV("Event has no current header field: addr=%p, "
- "event-class-name=\"%s\", event-class-id=%" PRId64,
- event, bt_event_class_get_name(event->event_class),
- bt_event_class_get_id(event->event_class));
- goto end;
+ if (event->common.payload_field) {
+ bt_field_common_set_is_frozen_recursive(
+ event->common.payload_field, false);
+ bt_field_common_reset_recursive(event->common.payload_field);
}
- header = event->event_header;
- bt_get(header);
+ g_hash_table_iter_init(&iter, event->clock_values);
+ while (g_hash_table_iter_next(&iter, &key, &value)) {
+ struct bt_clock_value *clock_value = value;
-end:
- return header;
+ BT_ASSERT(clock_value);
+ bt_clock_value_reset(clock_value);
+ bt_clock_value_set_is_frozen(clock_value, false);
+ }
}
-int bt_event_set_header(struct bt_event *event, struct bt_field *header)
-{
- BT_ASSERT_PRE_NON_NULL(event, "Event");
- BT_ASSERT_PRE_EVENT_HOT(event, "Event");
+#ifdef BT_DEV_MODE
+# define bt_event_reset_dev_mode _bt_event_reset_dev_mode
+#else
+# define bt_event_reset_dev_mode(_x)
+#endif
- /*
- * Ensure the provided header's type matches the one registered to the
- * stream class.
- */
- if (header) {
- BT_ASSERT_PRE(bt_field_type_compare(header->type,
- bt_event_class_borrow_stream_class(event->event_class)->event_header_type) == 0,
- "Header field's type is different from the "
- "expected field type: %![event-]+e, %![ft-]+F, "
- "%![expected-ft-]+F",
- event, header->type,
- bt_event_class_borrow_stream_class(event->event_class)->event_header_type);
- } else {
- BT_ASSERT_PRE(!bt_event_class_borrow_stream_class(event->event_class)->event_header_type,
- "Setting no event header field, "
- "but event header field type is not NULL: ",
- "%![event-]+e, %![header-ft-]+F",
- event,
- bt_event_class_borrow_stream_class(event->event_class)->event_header_type);
- }
-
- bt_put(event->event_header);
- event->event_header = bt_get(header);
- BT_LOGV("Set event's header field: event-addr=%p, "
- "event-class-name=\"%s\", event-class-id=%" PRId64 ", "
- "header-field-addr=%p",
- event, bt_event_class_get_name(event->event_class),
- bt_event_class_get_id(event->event_class), header);
- return 0;
+static inline
+void bt_event_reset(struct bt_event *event)
+{
+ BT_ASSERT(event);
+ event->common.frozen = false;
+ bt_event_reset_dev_mode(event);
+ BT_PUT(event->packet);
}
-struct bt_field *bt_event_get_event_context(struct bt_event *event)
+BT_HIDDEN
+struct bt_event *bt_event_create(struct bt_event_class *event_class,
+ struct bt_packet *packet)
{
- struct bt_field *context = NULL;
+ int ret;
+ struct bt_event *event = NULL;
- BT_ASSERT_PRE_NON_NULL(event, "Event");
+ BT_ASSERT(event_class);
+ event = bt_object_pool_create_object(&event_class->event_pool);
+ if (!event) {
+ BT_LIB_LOGE("Cannot allocate one event from event class's event pool: "
+ "%![event-class-]+E", event_class);
+ goto error;
+ }
- if (!event->context_payload) {
- BT_LOGV("Event has no current context field: addr=%p, "
- "event-class-name=\"%s\", event-class-id=%" PRId64,
- event, bt_event_class_get_name(event->event_class),
- bt_event_class_get_id(event->event_class));
- goto end;
+ if (!event->common.class) {
+ event->common.class = bt_get(event_class);
}
- context = event->context_payload;
- bt_get(context);
+ BT_ASSERT(packet);
+ ret = bt_event_set_packet(event, packet);
+ if (ret) {
+ BT_LIB_LOGE("Cannot set event's packet: "
+ "%![event-]+e, %![packet-]+a", event, packet);
+ goto error;
+ }
-end:
- return context;
-}
+ goto end;
-int bt_event_set_event_context(struct bt_event *event, struct bt_field *context)
-{
- BT_ASSERT_PRE_NON_NULL(event, "Event");
- BT_ASSERT_PRE_EVENT_HOT(event, "Event");
-
- if (context) {
- BT_ASSERT_PRE(bt_field_type_compare(context->type,
- event->event_class->context) == 0,
- "Context field's type is different from the "
- "expected field type: %![event-]+e, %![ft-]+F, "
- "%![expected-ft-]+F",
- event, context->type, event->event_class->context);
- } else {
- BT_ASSERT_PRE(!event->event_class->context,
- "Setting no event context field, "
- "but event context field type is not NULL: ",
- "%![event-]+e, %![context-ft-]+F",
- event, event->event_class->context);
+error:
+ if (event) {
+ bt_event_recycle(event);
+ event = NULL;
}
- bt_put(event->context_payload);
- event->context_payload = bt_get(context);
- BT_LOGV("Set event's context field: event-addr=%p, "
- "event-class-name=\"%s\", event-class-id=%" PRId64 ", "
- "context-field-addr=%p",
- event, bt_event_class_get_name(event->event_class),
- bt_event_class_get_id(event->event_class), context);
- return 0;
+end:
+ return event;
}
-struct bt_field *bt_event_get_stream_event_context(
- struct bt_event *event)
+struct bt_event_class *bt_event_borrow_class(struct bt_event *event)
{
- struct bt_field *stream_event_context = NULL;
-
BT_ASSERT_PRE_NON_NULL(event, "Event");
-
- if (!event->stream_event_context) {
- BT_LOGV("Event has no current stream event context field: addr=%p, "
- "event-class-name=\"%s\", event-class-id=%" PRId64,
- event, bt_event_class_get_name(event->event_class),
- bt_event_class_get_id(event->event_class));
- goto end;
- }
-
- stream_event_context = event->stream_event_context;
-
-end:
- return bt_get(stream_event_context);
+ return BT_FROM_COMMON(
+ bt_event_common_borrow_class(BT_TO_COMMON(event)));
}
-int bt_event_set_stream_event_context(struct bt_event *event,
- struct bt_field *stream_event_context)
+struct bt_stream *bt_event_borrow_stream(struct bt_event *event)
{
BT_ASSERT_PRE_NON_NULL(event, "Event");
- BT_ASSERT_PRE_EVENT_HOT(event, "Event");
+ return event->packet ? event->packet->stream : NULL;
+}
- if (stream_event_context) {
- BT_ASSERT_PRE(bt_field_type_compare(stream_event_context->type,
- bt_event_class_borrow_stream_class(event->event_class)->event_context_type) == 0,
- "Stream event context field's type is different from the "
- "expected field type: %![event-]+e, %![ft-]+F, "
- "%![expected-ft-]+F",
- event, stream_event_context->type,
- bt_event_class_borrow_stream_class(event->event_class)->event_context_type);
- } else {
- BT_ASSERT_PRE(!bt_event_class_borrow_stream_class(event->event_class)->event_context_type,
- "Setting no stream event context field, "
- "but stream event context field type is not NULL: ",
- "%![event-]+e, %![context-ft-]+F",
- event,
- bt_event_class_borrow_stream_class(event->event_class)->event_context_type);
- }
+struct bt_field *bt_event_borrow_payload(struct bt_event *event)
+{
+ return BT_FROM_COMMON(
+ bt_event_common_borrow_payload(BT_TO_COMMON(event)));
+}
- bt_get(stream_event_context);
- BT_MOVE(event->stream_event_context, stream_event_context);
- BT_LOGV("Set event's stream event context field: event-addr=%p, "
- "event-class-name=\"%s\", event-class-id=%" PRId64 ", "
- "stream-event-context-field-addr=%p",
- event, bt_event_class_get_name(event->event_class),
- bt_event_class_get_id(event->event_class),
- stream_event_context);
- return 0;
+struct bt_field *bt_event_borrow_header(struct bt_event *event)
+{
+ return BT_FROM_COMMON(
+ bt_event_common_borrow_header(BT_TO_COMMON(event)));
}
-/* Pre-2.0 CTF writer backward compatibility */
-void bt_ctf_event_get(struct bt_event *event)
+struct bt_field *bt_event_borrow_context(struct bt_event *event)
{
- bt_get(event);
+ return BT_FROM_COMMON(
+ bt_event_common_borrow_context(BT_TO_COMMON(event)));
}
-/* Pre-2.0 CTF writer backward compatibility */
-void bt_ctf_event_put(struct bt_event *event)
+struct bt_field *bt_event_borrow_stream_event_context(
+ struct bt_event *event)
{
- bt_put(event);
+ return BT_FROM_COMMON(bt_event_common_borrow_stream_event_context(
+ BT_TO_COMMON(event)));
}
-void bt_event_destroy(struct bt_object *obj)
+static
+void release_event_header_field(struct bt_field_wrapper *field_wrapper,
+ struct bt_event_common *event_common)
{
- struct bt_event *event;
+ struct bt_event *event = BT_FROM_COMMON(event_common);
+ struct bt_event_class *event_class = bt_event_borrow_class(event);
- event = container_of(obj, struct bt_event, base);
- BT_LOGD("Destroying event: addr=%p, "
- "event-class-name=\"%s\", event-class-id=%" PRId64,
- event, bt_event_class_get_name(event->event_class),
- bt_event_class_get_id(event->event_class));
+ if (!event_class) {
+ bt_field_wrapper_destroy(field_wrapper);
+ } else {
+ struct bt_stream_class *stream_class =
+ bt_event_class_borrow_stream_class(event_class);
- if (!event->base.parent) {
- /*
- * Event was keeping a reference to its class since it shared no
- * common ancestor with it to guarantee they would both have the
- * same lifetime.
- */
- bt_put(event->event_class);
+ BT_ASSERT(stream_class);
+ bt_event_header_field_recycle(field_wrapper, stream_class);
}
+}
+
+BT_HIDDEN
+void bt_event_destroy(struct bt_event *event)
+{
+ BT_ASSERT(event);
+ bt_event_common_finalize((void *) event,
+ (void *) bt_field_destroy_recursive,
+ (void *) release_event_header_field);
g_hash_table_destroy(event->clock_values);
- BT_LOGD_STR("Putting event's header field.");
- bt_put(event->event_header);
- BT_LOGD_STR("Putting event's stream event context field.");
- bt_put(event->stream_event_context);
- BT_LOGD_STR("Putting event's context field.");
- bt_put(event->context_payload);
- BT_LOGD_STR("Putting event's payload field.");
- bt_put(event->fields_payload);
BT_LOGD_STR("Putting event's packet.");
bt_put(event->packet);
g_free(event);
}
-struct bt_clock_value *bt_event_get_clock_value(
+struct bt_clock_value *bt_event_borrow_clock_value(
struct bt_event *event, struct bt_clock_class *clock_class)
{
struct bt_clock_value *clock_value = NULL;
"event-addr=%p, event-class-name=\"%s\", "
"event-class-id=%" PRId64 ", clock-class-addr=%p, "
"clock-class-name=\"%s\"", event,
- bt_event_class_get_name(event->event_class),
- bt_event_class_get_id(event->event_class),
+ bt_event_class_common_get_name(event->common.class),
+ bt_event_class_common_get_id(event->common.class),
clock_class, bt_clock_class_get_name(clock_class));
goto end;
}
- bt_get(clock_value);
-
end:
return clock_value;
}
-int bt_event_set_clock_value(struct bt_event *event,
- struct bt_clock_value *value)
-{
- struct bt_trace *trace;
- struct bt_stream_class *stream_class;
- struct bt_event_class *event_class;
- struct bt_clock_class *clock_class = NULL;
-
- BT_ASSERT_PRE_NON_NULL(event, "Event");
- BT_ASSERT_PRE_NON_NULL(value, "Clock value");
- BT_ASSERT_PRE_EVENT_HOT(event, "Event");
- clock_class = bt_clock_value_get_class(value);
- event_class = bt_event_borrow_event_class(event);
- BT_ASSERT(event_class);
- stream_class = bt_event_class_borrow_stream_class(event_class);
- BT_ASSERT(stream_class);
- trace = bt_stream_class_borrow_trace(stream_class);
- BT_ASSERT(trace);
- BT_ASSERT_PRE(bt_trace_has_clock_class(trace, clock_class),
- "Clock class is not part of event's trace: "
- "%![event-]+e, %![clock-class-]+K",
- event, clock_class);
- g_hash_table_insert(event->clock_values, clock_class, bt_get(value));
- BT_LOGV("Set event's clock value: "
- "event-addr=%p, event-class-name=\"%s\", "
- "event-class-id=%" PRId64 ", clock-class-addr=%p, "
- "clock-class-name=\"%s\", clock-value-addr=%p, "
- "clock-value-cycles=%" PRIu64,
- event, bt_event_class_get_name(event->event_class),
- bt_event_class_get_id(event->event_class),
- clock_class, bt_clock_class_get_name(clock_class),
- value, value->value);
- clock_class = NULL;
- bt_put(clock_class);
- return 0;
-}
-
-BT_HIDDEN
-int _bt_event_validate(struct bt_event *event)
-{
- int ret = 0;
- struct bt_stream_class *stream_class;
-
- BT_ASSERT(event);
- if (event->event_header) {
- ret = bt_field_validate_recursive(event->event_header);
- if (ret) {
- BT_ASSERT_PRE_MSG("Invalid event's header field: "
- "%![event-]+e, %![field-]+f",
- event, event->event_header);
- goto end;
- }
- }
-
- stream_class = bt_event_class_borrow_stream_class(event->event_class);
-
- /*
- * We should not have been able to create the event without associating
- * the event class to a stream class.
- */
- BT_ASSERT(stream_class);
-
- if (stream_class->event_context_type) {
- ret = bt_field_validate_recursive(event->stream_event_context);
- if (ret) {
- BT_ASSERT_PRE_MSG("Invalid event's stream event context field: "
- "%![event-]+e, %![field-]+f",
- event, event->stream_event_context);
- goto end;
- }
- }
-
- if (event->event_class->context) {
- ret = bt_field_validate_recursive(event->context_payload);
- if (ret) {
- BT_ASSERT_PRE_MSG("Invalid event's payload field: "
- "%![event-]+e, %![field-]+f",
- event, event->context_payload);
- goto end;
- }
- }
-
- ret = bt_field_validate_recursive(event->fields_payload);
- if (ret) {
- BT_ASSERT_PRE_MSG("Invalid event's payload field: "
- "%![event-]+e, %![field-]+f",
- event, event->fields_payload);
- goto end;
- }
-
-end:
- return ret;
-}
-
-BT_HIDDEN
-int bt_event_serialize(struct bt_event *event, struct bt_stream_pos *pos,
- enum bt_byte_order native_byte_order)
-{
- int ret = 0;
-
- BT_ASSERT(event);
- BT_ASSERT(pos);
-
- BT_LOGV_STR("Serializing event's context field.");
- if (event->context_payload) {
- ret = bt_field_serialize_recursive(event->context_payload, pos,
- native_byte_order);
- if (ret) {
- BT_LOGW("Cannot serialize event's context field: "
- "event-addr=%p, event-class-name=\"%s\", "
- "event-class-id=%" PRId64,
- event,
- bt_event_class_get_name(event->event_class),
- bt_event_class_get_id(event->event_class));
- goto end;
- }
- }
-
- BT_LOGV_STR("Serializing event's payload field.");
- if (event->fields_payload) {
- ret = bt_field_serialize_recursive(event->fields_payload, pos,
- native_byte_order);
- if (ret) {
- BT_LOGW("Cannot serialize event's payload field: "
- "event-addr=%p, event-class-name=\"%s\", "
- "event-class-id=%" PRId64,
- event,
- bt_event_class_get_name(event->event_class),
- bt_event_class_get_id(event->event_class));
- goto end;
- }
- }
-end:
- return ret;
-}
-
-struct bt_packet *bt_event_get_packet(struct bt_event *event)
+struct bt_packet *bt_event_borrow_packet(struct bt_event *event)
{
struct bt_packet *packet = NULL;
if (!event->packet) {
BT_LOGV("Event has no current packet: addr=%p, "
"event-class-name=\"%s\", event-class-id=%" PRId64,
- event, bt_event_class_get_name(event->event_class),
- bt_event_class_get_id(event->event_class));
+ event, bt_event_class_common_get_name(event->common.class),
+ bt_event_class_common_get_id(event->common.class));
goto end;
}
- packet = bt_get(event->packet);
+ packet = event->packet;
end:
return packet;
}
-int bt_event_set_packet(struct bt_event *event,
- struct bt_packet *packet)
+BT_HIDDEN
+int bt_event_set_packet(struct bt_event *event, struct bt_packet *packet)
{
BT_ASSERT_PRE_NON_NULL(event, "Event");
BT_ASSERT_PRE_NON_NULL(packet, "Packet");
- BT_ASSERT_PRE_EVENT_HOT(event, "Event");
+ BT_ASSERT_PRE_EVENT_COMMON_HOT(BT_TO_COMMON(event), "Event");
/*
* Make sure the new packet was created by this event's
"%![event-]+e, %![packet-]+a",
event, packet);
} else {
- BT_ASSERT_PRE(bt_event_class_borrow_stream_class(event->event_class) ==
- packet->stream->stream_class,
+ BT_ASSERT_PRE(bt_event_class_borrow_stream_class(
+ BT_FROM_COMMON(event->common.class)) ==
+ BT_FROM_COMMON(packet->stream->common.stream_class),
"Packet's stream class and event's stream class differ: "
"%![event-]+e, %![packet-]+a",
event, packet);
BT_LOGV("Set event's packet: event-addr=%p, "
"event-class-name=\"%s\", event-class-id=%" PRId64 ", "
"packet-addr=%p",
- event, bt_event_class_get_name(event->event_class),
- bt_event_class_get_id(event->event_class), packet);
+ event, bt_event_class_common_get_name(event->common.class),
+ bt_event_class_common_get_id(event->common.class), packet);
return 0;
}
BT_HIDDEN
void _bt_event_freeze(struct bt_event *event)
{
+ _bt_event_common_freeze(BT_TO_COMMON(event));
+ BT_LOGD_STR("Freezing event's packet.");
+ bt_packet_freeze(event->packet);
+}
+
+BT_HIDDEN
+void bt_event_recycle(struct bt_event *event)
+{
+ struct bt_event_class *event_class;
+
BT_ASSERT(event);
+ BT_LIB_LOGD("Recycling event: %!+e", event);
- if (event->frozen) {
- return;
- }
+ /*
+ * Those are the important ordered steps:
+ *
+ * 1. Reset the event object (put any permanent reference it
+ * has, unfreeze it and its fields in developer mode, etc.),
+ * but do NOT put its class's reference. This event class
+ * contains the pool to which we're about to recycle this
+ * event object, so we must guarantee its existence thanks
+ * to this existing reference.
+ *
+ * 2. Move the event class reference to our `event_class`
+ * variable so that we can set the event's class member
+ * to NULL before recycling it. We CANNOT do this after
+ * we put the event class reference because this bt_put()
+ * could destroy the event class, also destroying its
+ * event pool, thus also destroying our event object (this
+ * would result in an invalid write access).
+ *
+ * 3. Recycle the event object.
+ *
+ * 4. Put our event class reference.
+ */
+ bt_event_reset(event);
+ event_class = BT_FROM_COMMON(event->common.class);
+ BT_ASSERT(event_class);
+ event->common.class = NULL;
+ bt_object_pool_recycle_object(&event_class->event_pool, event);
+ bt_put(event_class);
+}
- BT_LOGD("Freezing event: addr=%p, "
- "event-class-name=\"%s\", event-class-id=%" PRId64,
- event, bt_event_class_get_name(event->event_class),
- bt_event_class_get_id(event->event_class));
- bt_packet_freeze(event->packet);
- BT_LOGD_STR("Freezing event's header field.");
- bt_field_freeze_recursive(event->event_header);
- BT_LOGD_STR("Freezing event's stream event context field.");
- bt_field_freeze_recursive(event->stream_event_context);
- BT_LOGD_STR("Freezing event's context field.");
- bt_field_freeze_recursive(event->context_payload);
- BT_LOGD_STR("Freezing event's payload field.");
- bt_field_freeze_recursive(event->fields_payload);
- event->frozen = 1;
+int bt_event_move_header(struct bt_event *event,
+ struct bt_event_header_field *header_field)
+{
+ struct bt_stream_class *stream_class;
+ struct bt_field_wrapper *field_wrapper = (void *) header_field;
+
+ BT_ASSERT_PRE_NON_NULL(event, "Event");
+ BT_ASSERT_PRE_NON_NULL(field_wrapper, "Header field");
+ BT_ASSERT_PRE_HOT(BT_TO_COMMON(event), "Event", ": +%!+e", event);
+ stream_class = bt_event_class_borrow_stream_class(
+ bt_event_borrow_class(event));
+ BT_ASSERT_PRE(stream_class->common.event_header_field_type,
+ "Stream class has no event header field type: %!+S",
+ stream_class);
+
+ /* Recycle current header field: always exists */
+ BT_ASSERT(event->common.header_field);
+ bt_event_header_field_recycle(event->common.header_field,
+ stream_class);
+
+ /* Move new field */
+ event->common.header_field = (void *) field_wrapper;
+ return 0;
}
projects / babeltrace.git / blobdiff