X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;ds=sidebyside;f=ltt-events.h;h=a5eab5b8b7ca1fecf5ed681282be8a1b08aee123;hb=1ec3f75aca46d4196d4d7dbbbe0b791f663203f1;hp=5b5dcb50ba14db062314dcfdb67d2aed85d0384e;hpb=d793d5e111fe1436fb8e15daa5d7fb1be8987bb4;p=lttng-modules.git

diff --git a/ltt-events.h b/ltt-events.h
index 5b5dcb50..a5eab5b8 100644
--- a/ltt-events.h
+++ b/ltt-events.h
@@ -147,6 +147,12 @@ struct ltt_channel_ops {
 	void (*event_commit)(struct lib_ring_buffer_ctx *ctx);
 	void (*event_write)(struct lib_ring_buffer_ctx *ctx, const void *src,
 			    size_t len);
+	/*
+	 * packet_avail_size returns the available size in the current
+	 * packet. Note that the size returned is only a hint, since it
+	 * may change due to concurrent writes.
+	 */
+	size_t (*packet_avail_size)(struct channel *chan);
 	wait_queue_head_t *(*get_reader_wait_queue)(struct ltt_channel *chan);
 };