- ret = set_integer_field_value(timestamp_field,
- timestamp);
- if (ret) {
- goto end;
- }
- }
- }
-
-end:
- bt_put(id_field);
- bt_put(timestamp_field);
- bt_put(mapped_clock_class);
- return ret;
-}
-
-int bt_ctf_stream_append_event(struct bt_ctf_stream *stream,
- struct bt_ctf_event *event)
-{
- int ret = 0;
-
- if (!stream || !event || stream->pos.fd < 0) {
- ret = -1;
- goto end;
- }
-
- /*
- * The event is not supposed to have a parent stream at this
- * point. The only other way an event can have a parent stream
- * is if it was assigned when setting a packet to the event,
- * in which case the packet's stream is not a writer stream,
- * and thus the user is trying to append an event which belongs
- * to another stream.
- */
- if (event->base.parent) {
- ret = -1;
- goto end;
- }
-
- bt_object_set_parent(event, stream);
- ret = auto_populate_event_header(stream, event);
- if (ret) {
- goto error;
- }
-
- /* Make sure the various scopes of the event are set */
- ret = bt_ctf_event_validate(event);
- if (ret) {
- goto error;
- }
-
- /* Save the new event and freeze it */
- bt_ctf_event_freeze(event);
- g_ptr_array_add(stream->events, event);
-
- /*
- * Event had to hold a reference to its event class as long as it wasn't
- * part of the same trace hierarchy. From now on, the event and its
- * class share the same lifetime guarantees and the reference is no
- * longer needed.
- */
- bt_put(event->event_class);
-
-end:
- return ret;
-
-error:
- /*
- * Orphan the event; we were not successful in associating it to
- * a stream.
- */
- bt_object_set_parent(event, NULL);
-
- 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 || stream->pos.fd < 0) {
- goto end;
- }
-
- packet_context = stream->packet_context;
- if (packet_context) {
- bt_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 || stream->pos.fd < 0) {
- ret = -1;
- goto end;
- }
-
- field_type = bt_ctf_field_get_type(field);
- if (bt_ctf_field_type_compare(field_type,
- stream->stream_class->packet_context_type)) {
- ret = -1;
- goto end;
- }
-
- bt_put(field_type);
- bt_put(stream->packet_context);
- stream->packet_context = bt_get(field);
-end:
- return ret;
-}
-
-struct bt_ctf_field *bt_ctf_stream_get_packet_header(
- struct bt_ctf_stream *stream)
-{
- struct bt_ctf_field *packet_header = NULL;
-
- if (!stream || stream->pos.fd < 0) {
- goto end;
- }
-
- packet_header = stream->packet_header;
- if (packet_header) {
- bt_get(packet_header);
- }
-end:
- return packet_header;
-}
-
-int bt_ctf_stream_set_packet_header(struct bt_ctf_stream *stream,
- struct bt_ctf_field *field)
-{
- int ret = 0;
- struct bt_ctf_trace *trace = NULL;
- struct bt_ctf_field_type *field_type = NULL;
-
- if (!stream || stream->pos.fd < 0) {
- ret = -1;
- goto end;
- }
-
- trace = (struct bt_ctf_trace *) bt_object_get_parent(stream);
- field_type = bt_ctf_field_get_type(field);
- if (bt_ctf_field_type_compare(field_type, trace->packet_header_type)) {
- ret = -1;
- goto end;
- }
-
- bt_put(stream->packet_header);
- stream->packet_header = bt_get(field);
-end:
- BT_PUT(trace);
- bt_put(field_type);
- return ret;
-}
-
-static
-int get_event_header_timestamp(struct bt_ctf_field *event_header, uint64_t *timestamp)
-{
- int ret = 0;
- struct bt_ctf_field *timestamp_field = NULL;
- struct bt_ctf_field_type *timestamp_field_type = NULL;
-
- timestamp_field = bt_ctf_field_structure_get_field(event_header,
- "timestamp");
- if (!timestamp_field) {
- ret = -1;
- goto end;
- }
-
- timestamp_field_type = bt_ctf_field_get_type(timestamp_field);
- assert(timestamp_field_type);
- if (bt_ctf_field_type_get_type_id(timestamp_field_type) !=
- BT_CTF_FIELD_TYPE_ID_INTEGER) {
- ret = -1;
- goto end;
- }
-
- if (bt_ctf_field_type_integer_get_signed(timestamp_field_type)) {
- int64_t val;
-
- ret = bt_ctf_field_signed_integer_get_value(timestamp_field,
- &val);
- if (ret) {
- goto end;
- }
- *timestamp = (uint64_t) val;
- } else {
- ret = bt_ctf_field_unsigned_integer_get_value(timestamp_field,
- timestamp);
- if (ret) {
- goto end;
- }
- }
-end:
- bt_put(timestamp_field);
- bt_put(timestamp_field_type);
- return ret;
-}
-
-static
-void reset_structure_field(struct bt_ctf_field *structure, const char *name)
-{
- struct bt_ctf_field *member;
-
- member = bt_ctf_field_structure_get_field(structure, name);
- assert(member);
- (void) bt_ctf_field_reset(member);
- bt_put(member);
-}
-
-int bt_ctf_stream_flush(struct bt_ctf_stream *stream)
-{
- int ret = 0;
- size_t i;
- uint64_t timestamp_begin, timestamp_end;
- struct bt_ctf_field *integer = NULL;
- struct bt_ctf_stream_pos packet_context_pos;
- struct bt_ctf_trace *trace;
- enum bt_ctf_byte_order native_byte_order;
- bt_bool empty_packet;
- uint64_t packet_size_bits;
- struct {
- bt_bool timestamp_begin;
- bt_bool timestamp_end;
- bt_bool content_size;
- bt_bool packet_size;
- } auto_set_fields = { 0 };
-
- 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;
- }
-
- if (!stream->packet_context && stream->flushed_packet_count > 0) {
- /*
- * A stream without a packet context, and thus without
- * content and packet size members, can't have more than
- * one packet.
- */
- ret = -1;
- goto end;
- }
-
- trace = bt_ctf_stream_class_borrow_trace(stream->stream_class);
- assert(trace);
- native_byte_order = bt_ctf_trace_get_native_byte_order(trace);
- empty_packet = (stream->events->len == 0);
-
- /* mmap the next packet */
- bt_ctf_stream_pos_packet_seek(&stream->pos, 0, SEEK_CUR);
- ret = bt_ctf_field_serialize(stream->packet_header, &stream->pos,
- native_byte_order);
- if (ret) {
- goto end;
- }
-
- if (stream->packet_context) {
- /* Set the default context attributes if present and unset. */
- if (!empty_packet && !get_event_header_timestamp(
- ((struct bt_ctf_event *) g_ptr_array_index(
- stream->events, 0))->event_header, ×tamp_begin)) {
- ret = try_set_structure_field_integer(
- stream->packet_context,
- "timestamp_begin", timestamp_begin);
- if (ret < 0) {
- goto end;
- }
- auto_set_fields.timestamp_begin = ret == 1;
- }
-
- if (!empty_packet && !get_event_header_timestamp(
- ((struct bt_ctf_event *) g_ptr_array_index(
- stream->events, stream->events->len - 1))->event_header,
- ×tamp_end)) {
-
- ret = try_set_structure_field_integer(
- stream->packet_context,
- "timestamp_end", timestamp_end);
- if (ret < 0) {
- goto end;
- }
- auto_set_fields.timestamp_end = ret == 1;
- }
- ret = try_set_structure_field_integer(stream->packet_context,
- "content_size", UINT64_MAX);
- if (ret < 0) {
- goto end;
- }
- auto_set_fields.content_size = ret == 1;
-
- ret = try_set_structure_field_integer(stream->packet_context,
- "packet_size", UINT64_MAX);
- if (ret < 0) {
- goto end;
- }
- auto_set_fields.packet_size = ret == 1;
-
- /* Write packet context */
- memcpy(&packet_context_pos, &stream->pos,
- sizeof(packet_context_pos));
- ret = bt_ctf_field_serialize(stream->packet_context,
- &stream->pos, native_byte_order);
- if (ret) {
- goto end;
- }
- }
-
- for (i = 0; i < stream->events->len; i++) {
- struct bt_ctf_event *event = g_ptr_array_index(
- stream->events, i);
-
- /* Write event header */
- ret = bt_ctf_field_serialize(event->event_header,
- &stream->pos, native_byte_order);
- if (ret) {
- goto end;
- }
-
- /* Write stream event context */
- if (event->stream_event_context) {
- ret = bt_ctf_field_serialize(
- event->stream_event_context, &stream->pos,
- native_byte_order);
- if (ret) {
- goto end;
- }
- }
-
- /* Write event content */
- ret = bt_ctf_event_serialize(event, &stream->pos,
- native_byte_order);
- if (ret) {
- goto end;
- }
- }
-
- /* Rounded-up in case content_size is not byte-aligned. */
- packet_size_bits = (stream->pos.offset + (CHAR_BIT - 1)) &
- ~(CHAR_BIT - 1);
- stream->pos.packet_size = packet_size_bits;
-
- if (stream->packet_context) {
- /*
- * Update the packet total size and content size and overwrite
- * the packet context.
- * Copy base_mma as the packet may have been remapped (e.g. when
- * a packet is resized).
- */
- packet_context_pos.base_mma = stream->pos.base_mma;
- if (auto_set_fields.content_size) {
- ret = set_structure_field_integer(
- stream->packet_context,
- "content_size", stream->pos.offset);
- if (ret < 0) {
- goto end;
- }
- }
-
- if (auto_set_fields.packet_size) {
- ret = set_structure_field_integer(stream->packet_context,
- "packet_size", packet_size_bits);
- if (ret < 0) {
- goto end;
- }
- }
-
- ret = bt_ctf_field_serialize(stream->packet_context,
- &packet_context_pos, native_byte_order);
- if (ret) {
- goto end;
- }
- }
-
- g_ptr_array_set_size(stream->events, 0);
- stream->flushed_packet_count++;
- stream->size += packet_size_bits / CHAR_BIT;
-end:
- /* Reset automatically-set fields. */
- if (auto_set_fields.timestamp_begin) {
- reset_structure_field(stream->packet_context,
- "timestamp_begin");
- }
- if (auto_set_fields.timestamp_end) {
- reset_structure_field(stream->packet_context,
- "timestamp_end");
- }
- if (auto_set_fields.packet_size) {
- reset_structure_field(stream->packet_context,
- "packet_size");
- }
- if (auto_set_fields.content_size) {
- reset_structure_field(stream->packet_context,
- "content_size");
- }
- bt_put(integer);
-
- if (ret < 0) {
- /*
- * We failed to write the packet. Its size is therefore set to 0
- * to ensure the next mapping is done in the same place rather
- * than advancing by "stream->pos.packet_size", which would
- * leave a corrupted packet in the trace.
- */
- stream->pos.packet_size = 0;
- }
- return ret;
-}
-
-void bt_ctf_stream_get(struct bt_ctf_stream *stream)
-{
- bt_get(stream);
-}
-
-void bt_ctf_stream_put(struct bt_ctf_stream *stream)
-{
- bt_put(stream);
-}
-
-static
-void bt_ctf_stream_destroy(struct bt_object *obj)
-{
- struct bt_ctf_stream *stream;
- int i;
-
- stream = container_of(obj, struct bt_ctf_stream, base);
-
- /* Call destroy listeners in reverse registration order */
- for (i = stream->destroy_listeners->len - 1; i >= 0; i--) {
- struct bt_ctf_stream_destroy_listener *listener =
- &g_array_index(stream->destroy_listeners,
- struct bt_ctf_stream_destroy_listener, i);
-
- listener->func(stream, listener->data);
- }
-
- (void) bt_ctf_stream_pos_fini(&stream->pos);
- if (stream->pos.fd >= 0) {
- int ret;
-
- /*
- * Truncate the file's size to the minimum required to fit the
- * last packet as we might have grown it too much on the last
- * mmap.
- */
- do {
- ret = ftruncate(stream->pos.fd, stream->size);
- } while (ret == -1 && errno == EINTR);
- if (ret) {
- perror("ftruncate");
- }
-
- if (close(stream->pos.fd)) {
- perror("close");
- }
- }
-
- if (stream->events) {
- g_ptr_array_free(stream->events, TRUE);
- }
-
- if (stream->name) {
- g_string_free(stream->name, TRUE);
- }
-
- if (stream->comp_cur_port) {
- GHashTableIter ht_iter;
- gpointer comp_gptr, port_gptr;
-
- /*
- * Since we're destroying the stream, remove the destroy
- * listeners that it registered for each component in
- * its component-port mapping hash table. Otherwise they
- * would be called and the stream would be accessed once
- * it's freed or another stream would be accessed.
- */
- g_hash_table_iter_init(&ht_iter, stream->comp_cur_port);
-
- while (g_hash_table_iter_next(&ht_iter, &comp_gptr, &port_gptr)) {
- assert(comp_gptr);
- bt_component_remove_destroy_listener((void *) comp_gptr,
- component_destroy_listener, stream);
- }
-
- g_hash_table_destroy(stream->comp_cur_port);
- }
-
- if (stream->destroy_listeners) {
- g_array_free(stream->destroy_listeners, TRUE);
- }
-
- bt_put(stream->packet_header);
- bt_put(stream->packet_context);
- g_free(stream);
-}
-
-static
-int _set_structure_field_integer(struct bt_ctf_field *structure, char *name,
- uint64_t value, bt_bool force)
-{
- 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 (!force && bt_ctf_field_is_set(integer)) {
- /* Payload already set, not an error */
- goto end;
- }
-
- field_type = bt_ctf_field_get_type(integer);
- assert(field_type);
- if (bt_ctf_field_type_get_type_id(field_type) != BT_CTF_FIELD_TYPE_ID_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);
- }
- ret = !ret ? 1 : ret;
-end:
- bt_put(integer);
- bt_put(field_type);
- return ret;
-}
-
-static
-int set_structure_field_integer(struct bt_ctf_field *structure, char *name,
- uint64_t value)
-{
- return _set_structure_field_integer(structure, name, value, BT_TRUE);
-}
-
-/*
- * Returns the following codes:
- * 1 if the field was found and set,
- * 0 if nothing was done (field not found, or was already set),
- * <0 if an error was encoutered
- */
-static
-int try_set_structure_field_integer(struct bt_ctf_field *structure, char *name,
- uint64_t value)
-{
- return _set_structure_field_integer(structure, name, value, BT_FALSE);
-}
-
-const char *bt_ctf_stream_get_name(struct bt_ctf_stream *stream)
-{
- const char *name = NULL;
-
- if (!stream) {
- goto end;
- }
-
- name = stream->name ? stream->name->str : NULL;
-
-end:
- return name;
-}
-
-int bt_ctf_stream_is_writer(struct bt_ctf_stream *stream)
-{
- int ret = -1;
-
- if (!stream) {
- goto end;
- }
-
- ret = (stream->pos.fd >= 0);
-
-end:
- return ret;
-}
-
-BT_HIDDEN
-void bt_ctf_stream_map_component_to_port(struct bt_ctf_stream *stream,
- struct bt_component *comp,
- struct bt_port *port)
-{
- assert(stream);
- assert(comp);
- assert(port);
- assert(stream->comp_cur_port);
-
- /*
- * Do not take a reference to the component here because we
- * don't want the component to exist as long as this stream
- * exists. Instead, keep a weak reference, but add a destroy
- * listener so that we remove this hash table entry when we know
- * the component is destroyed.
- */
- bt_component_add_destroy_listener(comp, component_destroy_listener,
- stream);
- g_hash_table_insert(stream->comp_cur_port, comp, port);
-}
-
-BT_HIDDEN
-struct bt_port *bt_ctf_stream_port_for_component(struct bt_ctf_stream *stream,
- struct bt_component *comp)