Fix: grab more than one packet for snapshots

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

diff --git a/src/common/ust-consumer/ust-consumer.c b/src/common/ust-consumer/ust-consumer.c
index ea30bd433ec4b0fc2265f491658c3890afabf73a..8aaa020bfe105cd41ab708809d7e447d3d7f0068 100644 (file)
--- a/src/common/ust-consumer/ust-consumer.c
+++ b/src/common/ust-consumer/ust-consumer.c
@@ -858,7 +858,7 @@ error:
  * Returns 0 on success, < 0 on error
  */
 static int snapshot_channel(uint64_t key, char *path, uint64_t relayd_id,
-               uint64_t max_stream_size, struct lttng_consumer_local_data *ctx)
+               uint64_t nb_packets_per_stream, struct lttng_consumer_local_data *ctx)
 {
        int ret;
        unsigned use_relayd = 0;
@@ -940,12 +940,13 @@ static int snapshot_channel(uint64_t key, char *path, uint64_t relayd_id,
 
                /*
                 * The original value is sent back if max stream size is larger than
-                * the possible size of the snapshot. Also, we asume that the session
+                * the possible size of the snapshot. Also, we assume that the session
                 * daemon should never send a maximum stream size that is lower than
                 * subbuffer size.
                 */
-               consumed_pos = consumer_get_consumed_maxsize(consumed_pos,
-                               produced_pos, max_stream_size);
+               consumed_pos = consumer_get_consume_start_pos(consumed_pos,
+                               produced_pos, nb_packets_per_stream,
+                               stream->max_sb_size);
 
                while (consumed_pos < produced_pos) {
                        ssize_t read_len;
@@ -1488,7 +1489,7 @@ int lttng_ustconsumer_recv_cmd(struct lttng_consumer_local_data *ctx,
                        ret = snapshot_channel(msg.u.snapshot_channel.key,
                                        msg.u.snapshot_channel.pathname,
                                        msg.u.snapshot_channel.relayd_id,
-                                       msg.u.snapshot_channel.max_stream_size,
+                                       msg.u.snapshot_channel.nb_packets_per_stream,
                                        ctx);
                        if (ret < 0) {
                                ERR("Snapshot channel failed");