Implement consumer ring buffer position sampling

[lttng-tools.git] / src / common / consumer / consumer.c

diff --git a/src/common/consumer/consumer.c b/src/common/consumer/consumer.c
index 54a0531d5ee80cc87a390d581e796b38c88ced85..3b857dec3779bc82ce7e587c75448f5b4ac4c07f 100644 (file)
--- a/src/common/consumer/consumer.c
+++ b/src/common/consumer/consumer.c
@@ -368,6 +368,9 @@ void consumer_del_channel(struct lttng_consumer_channel *channel)
        if (channel->live_timer_enabled == 1) {
                consumer_timer_live_stop(channel);
        }
+       if (channel->monitor_timer_enabled == 1) {
+               consumer_timer_monitor_stop(channel);
+       }
 
        switch (consumer_data.type) {
        case LTTNG_CONSUMER_KERNEL:
@@ -1348,6 +1351,8 @@ struct lttng_consumer_local_data *lttng_consumer_create(
                goto error_metadata_pipe;
        }
 
+       ctx->channel_monitor_pipe = -1;
+
        return ctx;
 
 error_metadata_pipe:
@@ -2052,8 +2057,11 @@ void consumer_del_metadata_stream(struct lttng_consumer_stream *stream,
 
        pthread_mutex_lock(&consumer_data.lock);
        pthread_mutex_lock(&stream->chan->lock);
-       pthread_mutex_lock(&stream->chan->metadata_cache->lock);
        pthread_mutex_lock(&stream->lock);
+       if (stream->chan->metadata_cache) {
+               /* Only applicable to userspace consumers. */
+               pthread_mutex_lock(&stream->chan->metadata_cache->lock);
+       }
 
        /* Remove any reference to that stream. */
        consumer_stream_delete(stream, ht);
@@ -2077,8 +2085,10 @@ void consumer_del_metadata_stream(struct lttng_consumer_stream *stream,
         */
        stream->chan->metadata_stream = NULL;
 
+       if (stream->chan->metadata_cache) {
+               pthread_mutex_unlock(&stream->chan->metadata_cache->lock);
+       }
        pthread_mutex_unlock(&stream->lock);
-       pthread_mutex_unlock(&stream->chan->metadata_cache->lock);
        pthread_mutex_unlock(&stream->chan->lock);
        pthread_mutex_unlock(&consumer_data.lock);