/*
* stream.c
*
- * Babeltrace CTF Writer
+ * Babeltrace CTF IR - Stream
*
* Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
*
goto error_destroy;
}
- /* Initialize events_discarded*/
+ /*
+ * A stream class may not have a stream event context defined
+ * in which case this stream will never have a stream_event_context
+ * member since, after a stream's creation, the parent stream class
+ * is "frozen" (immutable).
+ */
+ if (stream_class->event_context_type) {
+ stream->event_context = bt_ctf_field_create(
+ stream_class->event_context_type);
+ if (!stream->packet_context) {
+ goto error_destroy;
+ }
+ }
+
+ /* Initialize events_discarded */
ret = set_structure_field_integer(stream->packet_context,
"events_discarded", 0);
if (ret) {
bt_ctf_stream_class_get(stream_class);
bt_ctf_stream_class_freeze(stream_class);
stream->events = g_ptr_array_new_with_free_func(
- (GDestroyNotify)bt_ctf_event_put);
+ (GDestroyNotify) bt_ctf_event_put);
+ if (!stream->events) {
+ goto error_destroy;
+ }
+ if (stream_class->event_context_type) {
+ stream->event_contexts = g_ptr_array_new_with_free_func(
+ (GDestroyNotify) bt_ctf_field_put);
+ if (!stream->event_contexts) {
+ goto error_destroy;
+ }
+ }
end:
return stream;
error_destroy:
{
int ret = 0;
uint64_t timestamp;
+ struct bt_ctf_field *event_context_copy = NULL;
if (!stream || !event) {
ret = -1;
goto end;
}
+ /* Make sure the event's payload is set */
ret = bt_ctf_event_validate(event);
if (ret) {
goto end;
}
+ /* Sample the current stream event context by copying it */
+ if (stream->event_context) {
+ /* Make sure the event context's payload is set */
+ ret = bt_ctf_field_validate(stream->event_context);
+ if (ret) {
+ goto end;
+ }
+
+ event_context_copy = bt_ctf_field_copy(stream->event_context);
+ if (!event_context_copy) {
+ ret = -1;
+ goto end;
+ }
+ }
+
timestamp = bt_ctf_clock_get_time(stream->stream_class->clock);
ret = bt_ctf_event_set_timestamp(event, timestamp);
if (ret) {
}
bt_ctf_event_get(event);
+ /* Save the new event along with its associated stream event context */
g_ptr_array_add(stream->events, event);
+ if (event_context_copy) {
+ g_ptr_array_add(stream->event_contexts, event_context_copy);
+ }
end:
return ret;
}
}
packet_context = stream->packet_context;
-end:
if (packet_context) {
bt_ctf_field_get(packet_context);
}
+end:
return packet_context;
}
return ret;
}
+struct bt_ctf_field *bt_ctf_stream_get_event_context(
+ struct bt_ctf_stream *stream)
+{
+ struct bt_ctf_field *event_context = NULL;
+
+ if (!stream) {
+ goto end;
+ }
+
+ event_context = stream->event_context;
+ if (event_context) {
+ bt_ctf_field_get(event_context);
+ }
+end:
+ return event_context;
+}
+
+int bt_ctf_stream_set_event_context(struct bt_ctf_stream *stream,
+ struct bt_ctf_field *field)
+{
+ int ret = 0;
+ struct bt_ctf_field_type *field_type = NULL;
+
+ if (!stream || !field) {
+ ret = -1;
+ goto end;
+ }
+
+ field_type = bt_ctf_field_get_type(field);
+ if (field_type != stream->stream_class->event_context_type) {
+ ret = -1;
+ goto end;
+ }
+
+ bt_ctf_field_get(field);
+ bt_ctf_field_put(stream->event_context);
+ stream->event_context = field;
+end:
+ if (field_type) {
+ bt_ctf_field_type_put(field_type);
+ }
+ return ret;
+}
+
int bt_ctf_stream_flush(struct bt_ctf_stream *stream)
{
int ret = 0;
struct bt_ctf_field *integer = NULL;
struct ctf_stream_pos packet_context_pos;
- if (!stream) {
+ if (!stream || stream->pos.fd < 0) {
+ /*
+ * Stream does not have an associated fd. It is,
+ * therefore, not a stream being used to write events.
+ */
ret = -1;
goto end;
}
goto end;
}
+ /* Write stream event context */
+ if (stream->event_contexts) {
+ ret = bt_ctf_field_serialize(
+ g_ptr_array_index(stream->event_contexts, i),
+ &stream->pos);
+ if (ret) {
+ goto end;
+ }
+ }
+
/* Write event content */
ret = bt_ctf_event_serialize(event, &stream->pos);
if (ret) {
}
g_ptr_array_set_size(stream->events, 0);
+ if (stream->event_contexts) {
+ g_ptr_array_set_size(stream->event_contexts, 0);
+ }
stream->flushed_packet_count++;
end:
bt_ctf_field_put(integer);
if (stream->events) {
g_ptr_array_free(stream->events, TRUE);
}
+ if (stream->event_contexts) {
+ g_ptr_array_free(stream->event_contexts, TRUE);
+ }
if (stream->packet_context) {
bt_ctf_field_put(stream->packet_context);
}
+ if (stream->event_context) {
+ bt_ctf_field_put(stream->event_context);
+ }
g_free(stream);
}
uint64_t value)
{
int ret = 0;
+ struct bt_ctf_field_type *field_type = NULL;
struct bt_ctf_field *integer =
bt_ctf_field_structure_get_field(structure, name);
goto end;
}
- ret = bt_ctf_field_unsigned_integer_set_value(integer, value);
+ field_type = bt_ctf_field_get_type(integer);
+ /* Something is serioulsly wrong */
+ assert(field_type);
+ if (bt_ctf_field_type_get_type_id(field_type) != CTF_TYPE_INTEGER) {
+ /*
+ * The user most likely meant for us to populate this field
+ * automatically. However, we can only do this if the field
+ * is an integer. Return an error.
+ */
+ ret = -1;
+ goto end;
+ }
+
+ if (bt_ctf_field_type_integer_get_signed(field_type)) {
+ ret = bt_ctf_field_signed_integer_set_value(integer,
+ (int64_t) value);
+ } else {
+ ret = bt_ctf_field_unsigned_integer_set_value(integer, value);
+ }
end:
- bt_ctf_field_put(integer);
+ if (integer) {
+ bt_ctf_field_put(integer);
+ }
+ if (field_type) {
+ bt_ctf_field_type_put(field_type);
+ }
return ret;
}
projects / babeltrace.git / blobdiff