Consumer daemon data available command support

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

diff --git a/src/common/ust-consumer/ust-consumer.h b/src/common/ust-consumer/ust-consumer.h
index 76b4eeece093b5804bfe51e4e33a0928a9370649..a8a167239f49759c34e2b065ab479ba3a00ad5c3 100644 (file)
--- a/src/common/ust-consumer/ust-consumer.h
+++ b/src/common/ust-consumer/ust-consumer.h
@@ -2,19 +2,18 @@
  * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
  * Copyright (C) 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; only version 2
- * of the License.
+ * 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,
+ * as published by the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
 #ifndef _LTTNG_USTCONSUMER_H
@@ -27,20 +26,6 @@
 
 #ifdef HAVE_LIBLTTNG_UST_CTL
 
-/*
- * Mmap the ring buffer, read it and write the data to the tracefile.
- *
- * Returns the number of bytes written.
- */
-extern int lttng_ustconsumer_on_read_subbuffer_mmap(
-               struct lttng_consumer_local_data *ctx,
-               struct lttng_consumer_stream *stream, unsigned long len);
-
-/* Not implemented */
-extern int lttng_ustconsumer_on_read_subbuffer_splice(
-               struct lttng_consumer_local_data *ctx,
-               struct lttng_consumer_stream *stream, unsigned long len);
-
 /*
  * Take a snapshot for a specific fd
  *
@@ -64,7 +49,7 @@ int lttng_ustconsumer_recv_cmd(struct lttng_consumer_local_data *ctx,
 
 extern int lttng_ustconsumer_allocate_channel(struct lttng_consumer_channel *chan);
 extern void lttng_ustconsumer_del_channel(struct lttng_consumer_channel *chan);
-extern int lttng_ustconsumer_allocate_stream(struct lttng_consumer_stream *stream);
+extern int lttng_ustconsumer_add_stream(struct lttng_consumer_stream *stream);
 extern void lttng_ustconsumer_del_stream(struct lttng_consumer_stream *stream);
 
 int lttng_ustconsumer_read_subbuffer(struct lttng_consumer_stream *stream,
@@ -73,20 +58,27 @@ int lttng_ustconsumer_on_recv_stream(struct lttng_consumer_stream *stream);
 
 void lttng_ustconsumer_on_stream_hangup(struct lttng_consumer_stream *stream);
 
+extern int lttng_ustctl_get_mmap_read_offset(
+               struct lttng_ust_shm_handle *handle,
+               struct lttng_ust_lib_ring_buffer *buf, unsigned long *off);
+int lttng_ustconsumer_data_available(struct lttng_consumer_stream *stream);
+
 #else /* HAVE_LIBLTTNG_UST_CTL */
 
 static inline
-int lttng_ustconsumer_on_read_subbuffer_mmap(
+ssize_t lttng_ustconsumer_on_read_subbuffer_mmap(
                struct lttng_consumer_local_data *ctx,
-               struct lttng_consumer_stream *stream, unsigned long len)
+               struct lttng_consumer_stream *stream, unsigned long len,
+               unsigned long padding)
 {
        return -ENOSYS;
 }
 
 static inline
-int lttng_ustconsumer_on_read_subbuffer_splice(
+ssize_t lttng_ustconsumer_on_read_subbuffer_splice(
                struct lttng_consumer_local_data *ctx,
-               struct lttng_consumer_stream *uststream, unsigned long len)
+               struct lttng_consumer_stream *uststream, unsigned long len,
+               unsigned long padding)
 {
        return -ENOSYS;
 }
@@ -126,7 +118,7 @@ void lttng_ustconsumer_del_channel(struct lttng_consumer_channel *chan)
 }
 
 static inline
-int lttng_ustconsumer_allocate_stream(struct lttng_consumer_stream *stream)
+int lttng_ustconsumer_add_stream(struct lttng_consumer_stream *stream)
 {
        return -ENOSYS;
 }
@@ -154,6 +146,17 @@ void lttng_ustconsumer_on_stream_hangup(struct lttng_consumer_stream *stream)
 {
 }
 
+static inline
+int lttng_ustctl_get_mmap_read_offset(struct lttng_ust_shm_handle *handle,
+               struct lttng_ust_lib_ring_buffer *buf, unsigned long *off)
+{
+       return -ENOSYS;
+}
+static inline
+int lttng_ustconsumer_data_available(struct lttng_consumer_stream *stream)
+{
+       return -ENOSYS;
+}
 #endif /* HAVE_LIBLTTNG_UST_CTL */
 
 #endif /* _LTTNG_USTCONSUMER_H */