#include <urcu/list.h>
#include <common/hashtable/hashtable.h>
+#include <lttng/rotation.h>
#include "snapshot.h"
#include "trace-kernel.h"
* Node in ltt_sessions_ht_by_id.
*/
struct lttng_ht_node_u64 node;
+ /* Number of session rotation for this session. */
+ uint64_t rotate_count;
+ /*
+ * Rotation is pending between the time it starts until the consumer has
+ * finished extracting the data. If the session uses a relay, data related
+ * to a rotation can still be in flight after that, see
+ * rotate_pending_relay.
+ */
+ bool rotate_pending;
+ /* Current status of a rotation. */
+ enum lttng_rotation_status rotation_status;
+ /*
+ * Number of channels waiting for a rotation.
+ * When this number reaches 0, we can handle the rename of the chunk
+ * folder and inform the client that the rotate is finished.
+ */
+ unsigned int nr_chan_rotate_pending;
+ struct {
+ /*
+ * When the rotation is in progress, the temporary path name is
+ * stored here. When the rotation is complete, the final path name
+ * is here and can be queried with the rotate_pending call.
+ */
+ char current_rotate_path[LTTNG_PATH_MAX];
+ /*
+ * The path where the consumer is currently writing after the first
+ * session rotation.
+ */
+ char active_tracing_path[LTTNG_PATH_MAX];
+ } rotation_chunk;
+ /*
+ * The timestamp of the beginning of the previous chunk. For the
+ * first chunk, this is the "lttng start" timestamp. For the
+ * subsequent ones, this copies the current_chunk_start_ts value when
+ * a new rotation starts. This value is used to set the name of a
+ * complete chunk directory, ex: "last_chunk_start_ts-now()".
+ */
+ time_t last_chunk_start_ts;
+ /*
+ * This is the timestamp when a new chunk starts. When a new rotation
+ * starts, we copy this value to last_chunk_start_ts and replace it
+ * with the current timestamp.
+ */
+ time_t current_chunk_start_ts;
};
/* Prototypes */