/*
- * Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca>
+ * Copyright (C) 2011 EfficiOS Inc.
* Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
* Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
*
health_code_update();
- cds_list_del(&stream->send_node);
+ cds_list_del_init(&stream->send_node);
ustctl_destroy_stream(stream->ustream);
lttng_trace_chunk_put(stream->trace_chunk);
free(stream);
* global.
*/
stream->globally_visible = 1;
- cds_list_del(&stream->send_node);
+ cds_list_del_init(&stream->send_node);
ret = lttng_pipe_write(stream_pipe, &stream, sizeof(stream));
if (ret < 0) {
* will make sure to clean that list.
*/
consumer_stream_destroy(metadata->metadata_stream, NULL);
- cds_list_del(&metadata->metadata_stream->send_node);
metadata->metadata_stream = NULL;
send_streams_error:
error_no_stream:
metadata_stream = metadata_channel->metadata_stream;
assert(metadata_stream);
- pthread_mutex_lock(&metadata_stream->lock);
+ metadata_stream->read_subbuffer_ops.lock(metadata_stream);
if (relayd_id != (uint64_t) -1ULL) {
metadata_stream->net_seq_idx = relayd_id;
ret = consumer_send_relayd_stream(metadata_stream, path);
ret = consumer_stream_create_output_files(metadata_stream,
false);
}
- pthread_mutex_unlock(&metadata_stream->lock);
if (ret < 0) {
goto error_stream;
}
do {
health_code_update();
-
ret = lttng_consumer_read_subbuffer(metadata_stream, ctx, true);
if (ret < 0) {
goto error_stream;
} while (ret > 0);
error_stream:
+ metadata_stream->read_subbuffer_ops.unlock(metadata_stream);
/*
- * Clean up the stream completly because the next snapshot will use a new
- * metadata stream.
+ * Clean up the stream completely because the next snapshot will use a
+ * new metadata stream.
*/
consumer_stream_destroy(metadata_stream, NULL);
- cds_list_del(&metadata_stream->send_node);
metadata_channel->metadata_stream = NULL;
error:
if (use_relayd) {
ret = consumer_send_relayd_stream(stream, path);
if (ret < 0) {
- goto error_unlock;
+ goto error_close_stream;
}
} else {
ret = consumer_stream_create_output_files(stream,
false);
if (ret < 0) {
- goto error_unlock;
+ goto error_close_stream;
}
DBG("UST consumer snapshot stream (%" PRIu64 ")",
stream->key);
ret = lttng_ustconsumer_take_snapshot(stream);
if (ret < 0) {
ERR("Taking UST snapshot");
- goto error_unlock;
+ goto error_close_stream;
}
ret = lttng_ustconsumer_get_produced_snapshot(stream, &produced_pos);
if (ret < 0) {
ERR("Produced UST snapshot position");
- goto error_unlock;
+ goto error_close_stream;
}
ret = lttng_ustconsumer_get_consumed_snapshot(stream, &consumed_pos);
if (ret < 0) {
ERR("Consumerd UST snapshot position");
- goto error_unlock;
+ goto error_close_stream;
}
/*
return ret;
}
+static
+void metadata_stream_reset_cache_consumed_position(
+ struct lttng_consumer_stream *stream)
+{
+ ASSERT_LOCKED(stream->lock);
+
+ DBG("Reset metadata cache of session %" PRIu64,
+ stream->chan->session_id);
+ stream->ust_metadata_pushed = 0;
+}
+
/*
* Receive the metadata updates from the sessiond. Supports receiving
* overlapping metadata, but is needs to always belong to a contiguous
{
int ret, ret_code = LTTCOMM_CONSUMERD_SUCCESS;
char *metadata_str;
+ enum consumer_metadata_cache_write_status cache_write_status;
DBG("UST consumer push metadata key %" PRIu64 " of len %" PRIu64, key, len);
health_code_update();
pthread_mutex_lock(&channel->metadata_cache->lock);
- ret = consumer_metadata_cache_write(channel, offset, len, version,
- metadata_str);
+ cache_write_status = consumer_metadata_cache_write(
+ channel, offset, len, version, metadata_str);
pthread_mutex_unlock(&channel->metadata_cache->lock);
- if (ret < 0) {
+ switch (cache_write_status) {
+ case CONSUMER_METADATA_CACHE_WRITE_STATUS_NO_CHANGE:
+ /*
+ * The write entirely overlapped with existing contents of the
+ * same metadata version (same content); there is nothing to do.
+ */
+ break;
+ case CONSUMER_METADATA_CACHE_WRITE_STATUS_INVALIDATED:
+ /*
+ * The metadata cache was invalidated (previously pushed
+ * content has been overwritten). Reset the stream's consumed
+ * metadata position to ensure the metadata poll thread consumes
+ * the whole cache.
+ */
+
+ /*
+ * channel::metadata_stream can be null when the metadata
+ * channel is under a snapshot session type. No need to update
+ * the stream position in that scenario.
+ */
+ if (channel->metadata_stream != NULL) {
+ pthread_mutex_lock(&channel->metadata_stream->lock);
+ metadata_stream_reset_cache_consumed_position(
+ channel->metadata_stream);
+ pthread_mutex_unlock(&channel->metadata_stream->lock);
+ }
+ /* Fall-through. */
+ case CONSUMER_METADATA_CACHE_WRITE_STATUS_APPENDED_CONTENT:
+ /*
+ * In both cases, the metadata poll thread has new data to
+ * consume.
+ */
+ ret = consumer_metadata_wakeup_pipe(channel);
+ if (ret) {
+ ret_code = LTTCOMM_CONSUMERD_ERROR_METADATA;
+ goto end_free;
+ }
+ break;
+ case CONSUMER_METADATA_CACHE_WRITE_STATUS_ERROR:
/* Unable to handle metadata. Notify session daemon. */
ret_code = LTTCOMM_CONSUMERD_ERROR_METADATA;
/*
* waiting for the metadata cache to be flushed.
*/
goto end_free;
+ default:
+ abort();
}
if (!wait) {
switch (msg.cmd_type) {
case LTTNG_CONSUMER_ADD_RELAYD_SOCKET:
{
+ uint32_t major = msg.u.relayd_sock.major;
+ uint32_t minor = msg.u.relayd_sock.minor;
+ enum lttcomm_sock_proto protocol =
+ (enum lttcomm_sock_proto) msg.u.relayd_sock
+ .relayd_socket_protocol;
+
/* Session daemon status message are handled in the following call. */
consumer_add_relayd_socket(msg.u.relayd_sock.net_index,
- msg.u.relayd_sock.type, ctx, sock, consumer_sockpoll,
- &msg.u.relayd_sock.sock, msg.u.relayd_sock.session_id,
- msg.u.relayd_sock.relayd_session_id);
+ msg.u.relayd_sock.type, ctx, sock,
+ consumer_sockpoll, msg.u.relayd_sock.session_id,
+ msg.u.relayd_sock.relayd_session_id, major,
+ minor, protocol);
goto end_nosignal;
}
case LTTNG_CONSUMER_DESTROY_RELAYD:
const uint64_t relayd_id =
msg.u.close_trace_chunk.relayd_id.value;
struct lttcomm_consumer_close_trace_chunk_reply reply;
- char closed_trace_chunk_path[LTTNG_PATH_MAX];
+ char closed_trace_chunk_path[LTTNG_PATH_MAX] = {};
int ret;
ret_code = lttng_consumer_close_trace_chunk(
ustctl_flush_buffer(stream->ustream, 0);
stream->quiescent = true;
}
- pthread_mutex_unlock(&stream->lock);
+
stream->hangup_flush_done = 1;
+ pthread_mutex_unlock(&stream->lock);
}
void lttng_ustconsumer_del_channel(struct lttng_consumer_channel *chan)
return ustctl_stream_close_wakeup_fd(stream->ustream);
}
-static
-void metadata_stream_reset_cache_consumed_position(
- struct lttng_consumer_stream *stream)
-{
- DBG("Reset metadata cache of session %" PRIu64,
- stream->chan->session_id);
- stream->ust_metadata_pushed = 0;
-}
-
/*
* Write up to one packet from the metadata cache to the channel.
*
assert(stream);
assert(stream->ustream);
+ ASSERT_LOCKED(stream->lock);
DBG("UST consumer checking data pending");
projects / lttng-tools.git / blobdiff