Cleanup: spaghetti function return path

[lttng-tools.git] / src / bin / lttng-relayd / main.c

diff --git a/src/bin/lttng-relayd/main.c b/src/bin/lttng-relayd/main.c
index a3b8016db46d157dc44f478553011f489b60c591..f7c24b896ee24e54db183928992b9c4f88d494a1 100644 (file)
--- a/src/bin/lttng-relayd/main.c
+++ b/src/bin/lttng-relayd/main.c
@@ -18,6 +18,7 @@
  */
 
 #define _GNU_SOURCE
+#define _LGPL_SOURCE
 #include <getopt.h>
 #include <grp.h>
 #include <limits.h>
@@ -233,6 +234,11 @@ int set_option(int opt, const char *arg, const char *optname)
                break;
        case 'g':
                tracing_group_name = strdup(arg);
+               if (tracing_group_name == NULL) {
+                       ret = -errno;
+                       PERROR("strdup");
+                       goto end;
+               }
                tracing_group_name_override = 1;
                break;
        case 'h':
@@ -1345,7 +1351,6 @@ int relay_close_stream(struct lttcomm_relayd_hdr *recv_hdr,
        stream->last_net_seq_num = be64toh(stream_info.last_net_seq_num);
        stream->close_flag = 1;
        session->stream_count--;
-       assert(session->stream_count >= 0);
 
        /* Check if we can close it or else the data will do it. */
        try_close_stream(session, stream);
@@ -1944,9 +1949,10 @@ int relay_recv_index(struct lttcomm_relayd_hdr *recv_hdr,
                DBG("Received live beacon for stream %" PRIu64, stream->stream_handle);
 
                /*
-                * Only flag a stream inactive when it has already received data.
+                * Only flag a stream inactive when it has already received data
+                * and no indexes are in flight.
                 */
-               if (stream->total_index_received > 0) {
+               if (stream->total_index_received > 0 && stream->indexes_in_flight == 0) {
                        stream->beacon_ts_end = be64toh(index_info.timestamp_end);
                }
                ret = 0;
@@ -1963,6 +1969,7 @@ int relay_recv_index(struct lttcomm_relayd_hdr *recv_hdr,
                        goto end_rcu_unlock;
                }
                index_created = 1;
+               stream->indexes_in_flight++;
        }
 
        copy_index_control_data(index, &index_info);
@@ -1993,6 +2000,8 @@ int relay_recv_index(struct lttcomm_relayd_hdr *recv_hdr,
                        goto end_rcu_unlock;
                }
                stream->total_index_received++;
+               stream->indexes_in_flight--;
+               assert(stream->indexes_in_flight >= 0);
        }
 
 end_rcu_unlock:
@@ -2156,6 +2165,7 @@ static int handle_index_data(struct relay_stream *stream, uint64_t net_seq_num,
                        goto error;
                }
                index_created = 1;
+               stream->indexes_in_flight++;
        }
 
        if (rotate_index || stream->index_fd < 0) {
@@ -2198,6 +2208,8 @@ static int handle_index_data(struct relay_stream *stream, uint64_t net_seq_num,
                        goto error;
                }
                stream->total_index_received++;
+               stream->indexes_in_flight--;
+               assert(stream->indexes_in_flight >= 0);
        }
 
 error:
@@ -2421,6 +2433,7 @@ void *relay_thread_worker(void *data)
        struct lttcomm_relayd_hdr recv_hdr;
        struct relay_local_data *relay_ctx = (struct relay_local_data *) data;
        struct lttng_ht *sessions_ht = relay_ctx->sessions_ht;
+       struct relay_index *index;
 
        DBG("[thread] Relay worker started");
 
@@ -2609,6 +2622,7 @@ restart:
 
                                if (revents & LPOLLIN) {
                                        if (conn->type != RELAY_DATA) {
+                                               rcu_read_unlock();
                                                continue;
                                        }
 
@@ -2652,6 +2666,14 @@ error:
        }
        rcu_read_unlock();
 error_poll_create:
+       rcu_read_lock();
+       cds_lfht_for_each_entry(indexes_ht->ht, &iter.iter, index,
+                       index_n.node) {
+               health_code_update();
+               relay_index_delete(index);
+               relay_index_free_safe(index);
+       }
+       rcu_read_unlock();
        lttng_ht_destroy(indexes_ht);
 indexes_ht_error:
        lttng_ht_destroy(relay_connections_ht);