Clean-up: consumerd: use a specific status code for get_next_subbuffer

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

diff --git a/src/common/consumer/consumer.h b/src/common/consumer/consumer.h
index e28c20bf1c397c28384126c849564cde0b27d833..5fb812c08edb377f213f26b91e53dc74a2364d9a 100644 (file)
--- a/src/common/consumer/consumer.h
+++ b/src/common/consumer/consumer.h
@@ -299,6 +299,12 @@ struct stream_subbuffer {
        } info;
 };
 
+enum get_next_subbuffer_status {
+       GET_NEXT_SUBBUFFER_STATUS_OK,
+       GET_NEXT_SUBBUFFER_STATUS_NO_DATA,
+       GET_NEXT_SUBBUFFER_STATUS_ERROR,
+};
+
 /*
  * Perform any operation required to acknowledge
  * the wake-up of a consumer stream (e.g. consume a byte on a wake-up pipe).
@@ -321,8 +327,8 @@ typedef int (*on_sleep_cb)(struct lttng_consumer_stream *,
  *
  * Stream and channel locks are acquired during this call.
  */
-typedef int (*get_next_subbuffer_cb)(struct lttng_consumer_stream *,
-               struct stream_subbuffer *);
+typedef enum get_next_subbuffer_status (*get_next_subbuffer_cb)(
+               struct lttng_consumer_stream *, struct stream_subbuffer *);
 
 /*
  * Populate the stream_subbuffer's info member. The info to populate