Implement consumer ring buffer position sampling

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

diff --git a/src/common/kernel-consumer/kernel-consumer.h b/src/common/kernel-consumer/kernel-consumer.h
index 8ae1834020f1a6d2cb7701bd9f45bc9a7423a203..fe6923678a325627f55b7526babd5e49a4bf6f7d 100644 (file)
--- a/src/common/kernel-consumer/kernel-consumer.h
+++ b/src/common/kernel-consumer/kernel-consumer.h
@@ -1,6 +1,7 @@
 /*
  * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
  * Copyright (C) 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright (C) 2017 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License, version 2 only,
@@ -19,33 +20,21 @@
 #ifndef _LTTNG_KCONSUMER_H
 #define _LTTNG_KCONSUMER_H
 
-#include <common/consumer.h>
+#include <common/consumer/consumer.h>
 
-/*
- * Take a snapshot for a specific fd
- *
- * Returns 0 on success, < 0 on error
- */
-int lttng_kconsumer_take_snapshot(struct lttng_consumer_local_data *ctx,
-        struct lttng_consumer_stream *stream);
-
-/*
- * Get the produced position
- *
- * Returns 0 on success, < 0 on error
- */
-int lttng_kconsumer_get_produced_snapshot(
-        struct lttng_consumer_local_data *ctx,
-        struct lttng_consumer_stream *stream,
+int lttng_kconsumer_take_snapshot(struct lttng_consumer_stream *stream);
+int lttng_kconsumer_sample_snapshot_positions(
+               struct lttng_consumer_stream *stream);
+int lttng_kconsumer_get_produced_snapshot(struct lttng_consumer_stream *stream,
         unsigned long *pos);
-
+int lttng_kconsumer_get_consumed_snapshot(struct lttng_consumer_stream *stream,
+               unsigned long *pos);
 int lttng_kconsumer_recv_cmd(struct lttng_consumer_local_data *ctx,
                int sock, struct pollfd *consumer_sockpoll);
-
-
 ssize_t lttng_kconsumer_read_subbuffer(struct lttng_consumer_stream *stream,
                struct lttng_consumer_local_data *ctx);
 int lttng_kconsumer_on_recv_stream(struct lttng_consumer_stream *stream);
 int lttng_kconsumer_data_pending(struct lttng_consumer_stream *stream);
+int lttng_kconsumer_sync_metadata(struct lttng_consumer_stream *metadata);
 
 #endif /* _LTTNG_KCONSUMER_H */