LTTng ringbuffer ABI calls for index generation

[lttng-ust.git] / liblttng-ust / lttng-ring-buffer-client.h

diff --git a/liblttng-ust/lttng-ring-buffer-client.h b/liblttng-ust/lttng-ring-buffer-client.h
index 383fce0186ae25a05acb3c5f43315b890697c485..46717135cd4cdf9536f3ff74a4cd4252a8c7e849 100644 (file)
--- a/liblttng-ust/lttng-ring-buffer-client.h
+++ b/liblttng-ust/lttng-ring-buffer-client.h
@@ -386,6 +386,90 @@ static void client_buffer_finalize(struct lttng_ust_lib_ring_buffer *buf, void *
 {
 }
 
+static struct packet_header *client_packet_header(struct lttng_ust_lib_ring_buffer *buf,
+               struct lttng_ust_shm_handle *handle)
+{
+       struct channel *chan = shmp(handle, buf->backend.chan);
+       struct lttng_channel *lttng_chan = channel_get_private(chan);
+       unsigned long sb_index;
+       struct lttng_ust_lib_ring_buffer_backend *bufb;
+       struct packet_header *header;
+
+       bufb = &buf->backend;
+       sb_index = subbuffer_id_get_index(&lttng_chan->chan->backend.config,
+                       bufb->buf_rsb.id);
+       header = lib_ring_buffer_offset_address(bufb,
+                       sb_index * lttng_chan->chan->backend.subbuf_size,
+                       handle);
+       return header;
+}
+
+static int client_timestamp_begin(struct lttng_ust_lib_ring_buffer *buf,
+               struct lttng_ust_shm_handle *handle,
+               uint64_t *timestamp_begin)
+{
+       struct packet_header *header;
+
+       header = client_packet_header(buf, handle);
+       *timestamp_begin = header->ctx.timestamp_begin;
+       return 0;
+}
+
+static int client_timestamp_end(struct lttng_ust_lib_ring_buffer *buf,
+               struct lttng_ust_shm_handle *handle,
+               uint64_t *timestamp_end)
+{
+       struct packet_header *header;
+
+       header = client_packet_header(buf, handle);
+       *timestamp_end = header->ctx.timestamp_end;
+       return 0;
+}
+
+static int client_events_discarded(struct lttng_ust_lib_ring_buffer *buf,
+               struct lttng_ust_shm_handle *handle,
+               uint64_t *events_discarded)
+{
+       struct packet_header *header;
+
+       header = client_packet_header(buf, handle);
+       *events_discarded = header->ctx.events_discarded;
+       return 0;
+}
+
+static int client_content_size(struct lttng_ust_lib_ring_buffer *buf,
+               struct lttng_ust_shm_handle *handle,
+               uint64_t *content_size)
+{
+       struct packet_header *header;
+
+       header = client_packet_header(buf, handle);
+       *content_size = header->ctx.content_size;
+       return 0;
+}
+
+static int client_packet_size(struct lttng_ust_lib_ring_buffer *buf,
+               struct lttng_ust_shm_handle *handle,
+               uint64_t *packet_size)
+{
+       struct packet_header *header;
+
+       header = client_packet_header(buf, handle);
+       *packet_size = header->ctx.packet_size;
+       return 0;
+}
+
+static int client_stream_id(struct lttng_ust_lib_ring_buffer *buf,
+               struct lttng_ust_shm_handle *handle,
+               uint64_t *stream_id)
+{
+       struct packet_header *header;
+
+       header = client_packet_header(buf, handle);
+       *stream_id = header->stream_id;
+       return 0;
+}
+
 static const
 struct lttng_ust_client_lib_ring_buffer_client_cb client_cb = {
        .parent = {
@@ -397,6 +481,12 @@ struct lttng_ust_client_lib_ring_buffer_client_cb client_cb = {
                .buffer_create = client_buffer_create,
                .buffer_finalize = client_buffer_finalize,
        },
+       .timestamp_begin = client_timestamp_begin,
+       .timestamp_end = client_timestamp_end,
+       .events_discarded = client_events_discarded,
+       .content_size = client_content_size,
+       .packet_size = client_packet_size,
+       .stream_id = client_stream_id,
 };
 
 static const struct lttng_ust_lib_ring_buffer_config client_config = {