/*
* stream.c
*
- * Babeltrace CTF Writer
+ * Babeltrace CTF IR - Stream
*
* Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
*
struct bt_ctf_stream *bt_ctf_stream_create(
struct bt_ctf_stream_class *stream_class)
{
+ int ret;
struct bt_ctf_stream *stream = NULL;
if (!stream_class) {
}
bt_ctf_ref_init(&stream->ref_count);
+ stream->packet_context = bt_ctf_field_create(
+ stream_class->packet_context_type);
+ if (!stream->packet_context) {
+ goto error_destroy;
+ }
+
+ /*
+ * 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) {
+ goto error_destroy;
+ }
+
stream->pos.fd = -1;
stream->id = stream_class->next_stream_id++;
stream->stream_class = stream_class;
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:
+ bt_ctf_stream_destroy(&stream->ref_count);
+ return NULL;
}
BT_HIDDEN
struct bt_ctf_stream *stream, uint64_t *count)
{
int64_t ret = 0;
+ int field_signed;
+ struct bt_ctf_field *events_discarded_field = NULL;
+ struct bt_ctf_field_type *events_discarded_field_type = NULL;
+
+ if (!stream || !count || !stream->packet_context) {
+ ret = -1;
+ goto end;
+ }
- if (!stream || !count) {
+ events_discarded_field = bt_ctf_field_structure_get_field(
+ stream->packet_context, "events_discarded");
+ if (!events_discarded_field) {
ret = -1;
goto end;
}
- *count = stream->events_discarded;
+ events_discarded_field_type = bt_ctf_field_get_type(
+ events_discarded_field);
+ if (!events_discarded_field_type) {
+ ret = -1;
+ goto end;
+ }
+
+ field_signed = bt_ctf_field_type_integer_get_signed(
+ events_discarded_field_type);
+ if (field_signed < 0) {
+ ret = field_signed;
+ goto end;
+ }
+
+ if (field_signed) {
+ int64_t signed_count;
+
+ ret = bt_ctf_field_signed_integer_get_value(
+ events_discarded_field, &signed_count);
+ if (ret) {
+ goto end;
+ }
+ if (signed_count < 0) {
+ /* Invalid value */
+ ret = -1;
+ goto end;
+ }
+ *count = (uint64_t) signed_count;
+ } else {
+ ret = bt_ctf_field_unsigned_integer_get_value(
+ events_discarded_field, count);
+ if (ret) {
+ goto end;
+ }
+ }
end:
+ if (events_discarded_field) {
+ bt_ctf_field_put(events_discarded_field);
+ }
+ if (events_discarded_field_type) {
+ bt_ctf_field_type_put(events_discarded_field_type);
+ }
return ret;
}
void bt_ctf_stream_append_discarded_events(struct bt_ctf_stream *stream,
uint64_t event_count)
{
- if (!stream) {
- return;
+ int ret;
+ int field_signed;
+ uint64_t previous_count;
+ uint64_t new_count;
+ struct bt_ctf_field *events_discarded_field = NULL;
+ struct bt_ctf_field_type *events_discarded_field_type = NULL;
+
+ if (!stream || !stream->packet_context) {
+ goto end;
+ }
+
+ ret = bt_ctf_stream_get_discarded_events_count(stream,
+ &previous_count);
+ if (ret) {
+ goto end;
}
- stream->events_discarded += event_count;
+ events_discarded_field = bt_ctf_field_structure_get_field(
+ stream->packet_context, "events_discarded");
+ if (!events_discarded_field) {
+ goto end;
+ }
+
+ events_discarded_field_type = bt_ctf_field_get_type(
+ events_discarded_field);
+ if (!events_discarded_field_type) {
+ goto end;
+ }
+
+ field_signed = bt_ctf_field_type_integer_get_signed(
+ events_discarded_field_type);
+ if (field_signed < 0) {
+ goto end;
+ }
+
+ new_count = previous_count + event_count;
+ if (field_signed) {
+ ret = bt_ctf_field_signed_integer_set_value(
+ events_discarded_field, (int64_t) new_count);
+ if (ret) {
+ goto end;
+ }
+ } else {
+ ret = bt_ctf_field_unsigned_integer_set_value(
+ events_discarded_field, new_count);
+ if (ret) {
+ goto end;
+ }
+ }
+
+end:
+ if (events_discarded_field) {
+ bt_ctf_field_put(events_discarded_field);
+ }
+ if (events_discarded_field_type) {
+ bt_ctf_field_type_put(events_discarded_field_type);
+ }
}
int bt_ctf_stream_append_event(struct bt_ctf_stream *stream,
{
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;
+}
+
+struct bt_ctf_field *bt_ctf_stream_get_packet_context(
+ struct bt_ctf_stream *stream)
+{
+ struct bt_ctf_field *packet_context = NULL;
+
+ if (!stream) {
+ goto end;
+ }
+
+ packet_context = stream->packet_context;
+ if (packet_context) {
+ bt_ctf_field_get(packet_context);
+ }
+end:
+ return packet_context;
+}
+
+int bt_ctf_stream_set_packet_context(struct bt_ctf_stream *stream,
+ struct bt_ctf_field *field)
+{
+ int ret = 0;
+ struct bt_ctf_field_type *field_type;
+
+ if (!stream || !field) {
+ ret = -1;
+ goto end;
+ }
+
+ field_type = bt_ctf_field_get_type(field);
+ if (field_type != stream->stream_class->packet_context_type) {
+ ret = -1;
+ goto end;
+ }
+
+ bt_ctf_field_type_put(field_type);
+ bt_ctf_field_get(field);
+ bt_ctf_field_put(stream->packet_context);
+ stream->packet_context = field;
end:
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;
size_t i;
- uint64_t timestamp_begin, timestamp_end;
+ uint64_t timestamp_begin, timestamp_end, events_discarded;
struct bt_ctf_stream_class *stream_class;
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;
}
stream->events, 0))->timestamp;
timestamp_end = ((struct bt_ctf_event *) g_ptr_array_index(
stream->events, stream->events->len - 1))->timestamp;
- ret = set_structure_field_integer(stream_class->packet_context,
+
+ /* Set the default context attributes if present and unset. */
+ ret = set_structure_field_integer(stream->packet_context,
"timestamp_begin", timestamp_begin);
if (ret) {
goto end;
}
- ret = set_structure_field_integer(stream_class->packet_context,
+ ret = set_structure_field_integer(stream->packet_context,
"timestamp_end", timestamp_end);
if (ret) {
goto end;
}
- ret = set_structure_field_integer(stream_class->packet_context,
- "events_discarded", stream->events_discarded);
- if (ret) {
- goto end;
- }
-
- ret = set_structure_field_integer(stream_class->packet_context,
+ ret = set_structure_field_integer(stream->packet_context,
"content_size", UINT64_MAX);
if (ret) {
goto end;
}
- ret = set_structure_field_integer(stream_class->packet_context,
+ ret = set_structure_field_integer(stream->packet_context,
"packet_size", UINT64_MAX);
if (ret) {
goto end;
/* Write packet context */
memcpy(&packet_context_pos, &stream->pos,
sizeof(struct ctf_stream_pos));
- ret = bt_ctf_field_serialize(stream_class->packet_context,
+ ret = bt_ctf_field_serialize(stream->packet_context,
&stream->pos);
if (ret) {
goto end;
}
+ ret = bt_ctf_stream_get_discarded_events_count(stream,
+ &events_discarded);
+ if (ret) {
+ goto end;
+ }
+
+ /* Unset the packet context's fields. */
+ ret = bt_ctf_field_reset(stream->packet_context);
+ if (ret) {
+ goto end;
+ }
+
+ /* Set the previous number of discarded events. */
+ ret = set_structure_field_integer(stream->packet_context,
+ "events_discarded", events_discarded);
+ if (ret) {
+ goto end;
+ }
+
for (i = 0; i < stream->events->len; i++) {
struct bt_ctf_event *event = g_ptr_array_index(
stream->events, i);
event->event_class);
uint64_t timestamp = bt_ctf_event_get_timestamp(event);
+ ret = bt_ctf_field_reset(stream_class->event_header);
+ if (ret) {
+ goto end;
+ }
+
ret = set_structure_field_integer(stream_class->event_header,
"id", event_id);
if (ret) {
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) {
* packet is resized).
*/
packet_context_pos.base_mma = stream->pos.base_mma;
- ret = set_structure_field_integer(stream_class->packet_context,
+ ret = set_structure_field_integer(stream->packet_context,
"content_size", stream->pos.offset);
if (ret) {
goto end;
}
- ret = set_structure_field_integer(stream_class->packet_context,
+ ret = set_structure_field_integer(stream->packet_context,
"packet_size", stream->pos.packet_size);
if (ret) {
goto end;
}
- ret = bt_ctf_field_serialize(stream_class->packet_context,
+ ret = bt_ctf_field_serialize(stream->packet_context,
&packet_context_pos);
if (ret) {
goto end;
}
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 (close(stream->pos.fd)) {
perror("close");
}
- bt_ctf_stream_class_put(stream->stream_class);
- g_ptr_array_free(stream->events, TRUE);
+
+ if (stream->stream_class) {
+ bt_ctf_stream_class_put(stream->stream_class);
+ }
+ 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);
+
+ if (!structure || !name) {
+ ret = -1;
+ goto end;
+ }
+
if (!integer) {
+ /* Field not found, not an error. */
+ goto end;
+ }
+
+ /* Make sure the payload has not already been set. */
+ if (!bt_ctf_field_validate(integer)) {
+ /* Payload already set, not an error */
+ goto end;
+ }
+
+ 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;
}
- ret = bt_ctf_field_unsigned_integer_set_value(integer, value);
+ 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