Implement file-backed ring buffer

[lttng-ust.git] / include / lttng / ringbuffer-config.h

diff --git a/include/lttng/ringbuffer-config.h b/include/lttng/ringbuffer-config.h
index 9de9a73807ca634e4795bf70e39e44e5e0f9bf11..87344c94c8285f94b296f318ae58880dedcc7a39 100644 (file)
--- a/include/lttng/ringbuffer-config.h
+++ b/include/lttng/ringbuffer-config.h
@@ -92,6 +92,13 @@ struct lttng_ust_lib_ring_buffer_client_cb {
                            size_t offset, size_t *header_len,
                            size_t *payload_len, uint64_t *timestamp,
                            struct lttng_ust_shm_handle *handle);
+       /*
+        * Offset and size of content size field in client.
+        */
+       void (*content_size_field) (const struct lttng_ust_lib_ring_buffer_config *config,
+                               size_t *offset, size_t *length);
+       void (*packet_size_field) (const struct lttng_ust_lib_ring_buffer_config *config,
+                               size_t *offset, size_t *length);
 };
 
 /*
@@ -146,8 +153,8 @@ enum lttng_ust_lib_ring_buffer_sync_types {
 };
 
 enum lttng_ust_lib_ring_buffer_mode_types {
-       RING_BUFFER_OVERWRITE,          /* Overwrite when buffer full */
-       RING_BUFFER_DISCARD,            /* Discard when buffer full */
+       RING_BUFFER_OVERWRITE = 0,      /* Overwrite when buffer full */
+       RING_BUFFER_DISCARD = 1,        /* Discard when buffer full */
 };
 
 enum lttng_ust_lib_ring_buffer_output_types {