Support snapshot max-size limitation

[lttng-tools.git] / src / bin / lttng-sessiond / consumer.c

diff --git a/src/bin/lttng-sessiond/consumer.c b/src/bin/lttng-sessiond/consumer.c
index d3c561c9ec6932531fc3c46a1a464835dc45e12f..66fecd617612bb44fe6c7d066a32a7a75e65f5b3 100644 (file)
--- a/src/bin/lttng-sessiond/consumer.c
+++ b/src/bin/lttng-sessiond/consumer.c
@@ -408,6 +408,28 @@ error:
        return output;
 }
 
+/*
+ * Iterate over the consumer output socket hash table and destroy them. The
+ * socket file descriptor are only closed if the consumer output was
+ * registered meaning it's an external consumer.
+ */
+void consumer_destroy_output_sockets(struct consumer_output *obj)
+{
+       struct lttng_ht_iter iter;
+       struct consumer_socket *socket;
+
+       if (!obj->socks) {
+               return;
+       }
+
+       rcu_read_lock();
+       cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) {
+               consumer_del_socket(socket, obj);
+               consumer_destroy_socket(socket);
+       }
+       rcu_read_unlock();
+}
+
 /*
  * Delete the consumer_output object from the list and free the ptr.
  *
@@ -419,17 +441,9 @@ void consumer_destroy_output(struct consumer_output *obj)
                return;
        }
 
-       if (obj->socks) {
-               struct lttng_ht_iter iter;
-               struct consumer_socket *socket;
-
-               rcu_read_lock();
-               cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) {
-                       consumer_del_socket(socket, obj);
-                       consumer_destroy_socket(socket);
-               }
-               rcu_read_unlock();
+       consumer_destroy_output_sockets(obj);
 
+       if (obj->socks) {
                /* Finally destroy HT */
                ht_cleanup_push(obj->socks);
        }
@@ -1196,7 +1210,7 @@ end:
  */
 int consumer_snapshot_channel(struct consumer_socket *socket, uint64_t key,
                struct snapshot_output *output, int metadata, uid_t uid, gid_t gid,
-               const char *session_path, int wait)
+               const char *session_path, int wait, int max_stream_size)
 {
        int ret;
        struct lttcomm_consumer_msg msg;
@@ -1211,7 +1225,7 @@ int consumer_snapshot_channel(struct consumer_socket *socket, uint64_t key,
        memset(&msg, 0, sizeof(msg));
        msg.cmd_type = LTTNG_CONSUMER_SNAPSHOT_CHANNEL;
        msg.u.snapshot_channel.key = key;
-       msg.u.snapshot_channel.max_size = output->max_size;
+       msg.u.snapshot_channel.max_stream_size = max_stream_size;
        msg.u.snapshot_channel.metadata = metadata;
 
        if (output->consumer->type == CONSUMER_DST_NET) {