struct lttng_consumer_local_data *ctx)
{
int ret;
- unsigned long consumed_pos, produced_pos;
struct lttng_consumer_channel *channel;
struct lttng_consumer_stream *stream;
}
cds_list_for_each_entry(stream, &channel->streams.head, send_node) {
+ /* Are we at a position _before_ the first available packet ? */
+ bool before_first_packet = true;
+ unsigned long consumed_pos, produced_pos;
health_code_update();
while (consumed_pos < produced_pos) {
ssize_t read_len;
unsigned long len, padded_len;
+ int lost_packet = 0;
health_code_update();
}
DBG("Kernel consumer get subbuf failed. Skipping it.");
consumed_pos += stream->max_sb_size;
+
+ /*
+ * Start accounting lost packets only when we
+ * already have extracted packets (to match the
+ * content of the final snapshot).
+ */
+ if (!before_first_packet) {
+ lost_packet = 1;
+ }
continue;
}
goto end_unlock;
}
consumed_pos += stream->max_sb_size;
+
+ /*
+ * Only account lost packets located between
+ * succesfully extracted packets (do not account before
+ * and after since they are not visible in the
+ * resulting snapshot).
+ */
+ stream->chan->lost_packets += lost_packet;
+ lost_packet = 0;
+ before_first_packet = false;
}
if (relayd_id == (uint64_t) -1ULL) {
uint64_t id = msg.u.discarded_events.session_id;
uint64_t key = msg.u.discarded_events.channel_key;
+ DBG("Kernel consumer discarded events command for session id %"
+ PRIu64 ", channel key %" PRIu64, id, key);
+
channel = consumer_find_channel(key);
if (!channel) {
ERR("Kernel consumer discarded events channel %"
PRIu64 " not found", key);
- ret_code = LTTCOMM_CONSUMERD_CHAN_NOT_FOUND;
+ ret = 0;
+ } else {
+ ret = channel->discarded_events;
}
- DBG("Kernel consumer discarded events command for session id %"
- PRIu64 ", channel key %" PRIu64, id, key);
-
- ret = channel->discarded_events;
-
health_code_update();
/* Send back returned value to session daemon */
uint64_t id = msg.u.lost_packets.session_id;
uint64_t key = msg.u.lost_packets.channel_key;
+ DBG("Kernel consumer lost packets command for session id %"
+ PRIu64 ", channel key %" PRIu64, id, key);
+
channel = consumer_find_channel(key);
if (!channel) {
ERR("Kernel consumer lost packets channel %"
PRIu64 " not found", key);
- ret_code = LTTCOMM_CONSUMERD_CHAN_NOT_FOUND;
+ ret = 0;
+ } else {
+ ret = channel->lost_packets;
}
- DBG("Kernel consumer lost packets command for session id %"
- PRIu64 ", channel key %" PRIu64, id, key);
-
- ret = channel->lost_packets;
-
health_code_update();
/* Send back returned value to session daemon */
}
index->stream_id = htobe64(index->stream_id);
+ ret = kernctl_get_instance_id(infd, &index->stream_instance_id);
+ if (ret < 0) {
+ if (ret == -ENOTTY) {
+ /* Command not implemented by lttng-modules. */
+ index->stream_instance_id = -1ULL;
+ ret = 0;
+ } else {
+ PERROR("kernctl_get_instance_id");
+ goto error;
+ }
+ }
+ index->stream_instance_id = htobe64(index->stream_instance_id);
+
+ ret = kernctl_get_sequence_number(infd, &index->packet_seq_num);
+ if (ret < 0) {
+ if (ret == -ENOTTY) {
+ /* Command not implemented by lttng-modules. */
+ index->packet_seq_num = -1ULL;
+ ret = 0;
+ } else {
+ PERROR("kernctl_get_sequence_number");
+ goto error;
+ }
+ }
+ index->packet_seq_num = htobe64(index->packet_seq_num);
+
error:
return ret;
}
ret = kernctl_get_sequence_number(stream->wait_fd, &seq);
if (ret < 0) {
- PERROR("kernctl_get_sequence_number");
- goto end;
+ if (ret == -ENOTTY) {
+ /* Command not implemented by lttng-modules. */
+ seq = -1ULL;
+ ret = 0;
+ } else {
+ PERROR("kernctl_get_sequence_number");
+ goto end;
+ }
}
/*
}
if (discarded < stream->last_discarded_events) {
/*
- * Overflow has occured. We assume only one wrap-around
- * has occured.
+ * Overflow has occurred. We assume only one wrap-around
+ * has occurred.
*/
stream->chan->discarded_events += (1ULL << (CAA_BITS_PER_LONG - 1)) -
stream->last_discarded_events + discarded;
return ret;
}
+/*
+ * Check if the local version of the metadata stream matches with the version
+ * of the metadata stream in the kernel. If it was updated, set the reset flag
+ * on the stream.
+ */
+static
+int metadata_stream_check_version(int infd, struct lttng_consumer_stream *stream)
+{
+ int ret;
+ uint64_t cur_version;
+
+ ret = kernctl_get_metadata_version(infd, &cur_version);
+ if (ret < 0) {
+ if (ret == -ENOTTY) {
+ /*
+ * LTTng-modules does not implement this
+ * command.
+ */
+ ret = 0;
+ goto end;
+ }
+ ERR("Failed to get the metadata version");
+ goto end;
+ }
+
+ if (stream->metadata_version == cur_version) {
+ ret = 0;
+ goto end;
+ }
+
+ DBG("New metadata version detected");
+ stream->metadata_version = cur_version;
+ stream->reset_metadata_flag = 1;
+ ret = 0;
+
+end:
+ return ret;
+}
+
/*
* Consume data on a file descriptor and write it on a trace file.
*/
}
} else {
write_index = 0;
+ ret = metadata_stream_check_version(infd, stream);
+ if (ret < 0) {
+ goto end;
+ }
}
switch (stream->chan->output) {
stream->tracefile_size_current = 0;
if (!stream->metadata_flag) {
- ret = index_create_file(stream->chan->pathname,
+ struct lttng_index_file *index_file;
+
+ index_file = lttng_index_file_create(stream->chan->pathname,
stream->name, stream->uid, stream->gid,
stream->chan->tracefile_size,
- stream->tracefile_count_current);
- if (ret < 0) {
+ stream->tracefile_count_current,
+ CTF_INDEX_MAJOR, CTF_INDEX_MINOR);
+ if (!index_file) {
goto error;
}
- stream->index_fd = ret;
+ stream->index_file = index_file;
}
}
projects / lttng-tools.git / blobdiff