*/
#define LTTNG_SESSION_PADDING1 12
struct lttng_session {
- char name[NAME_MAX];
+ char name[LTTNG_NAME_MAX];
/* The path where traces are written */
char path[PATH_MAX];
uint32_t enabled; /* enabled/started: 1, disabled/stopped: 0 */
* The session will not be usable, tracing will be stopped thus buffers will be
* flushed.
*
+ * This call will wait for data availability for each domain of the session,
+ * which can take an arbitrary amount of time. However, when returning the
+ * tracing data is guaranteed to be ready to be read and analyzed.
+ *
+ * lttng_destroy_session_no_wait() may be used if such a guarantee is not
+ * needed.
+ *
* The name can't be NULL here.
*
* Return 0 on success else a negative LTTng error code.
*/
extern int lttng_destroy_session(const char *name);
+/*
+ * Behaves exactly like lttng_destroy_session but does not wait for data
+ * availability.
+ */
+extern int lttng_destroy_session_no_wait(const char *name);
+
/*
* List all the tracing sessions.
*
/*
* List PIDs in the tracker.
*
- * @enabled is set to whether the PID tracker is enabled.
- * @pids is set to an allocated array of PIDs currently tracked. On
- * success, @pids must be freed by the caller.
- * @nr_pids is set to the number of entries contained by the @pids array.
+ * enabled is set to whether the PID tracker is enabled.
+ * pids is set to an allocated array of PIDs currently tracked. On
+ * success, pids must be freed by the caller.
+ * nr_pids is set to the number of entries contained by the pids array.
*
* Returns 0 on success, else a negative LTTng error code.
*/
extern int lttng_list_tracker_pids(struct lttng_handle *handle,
int *enabled, int32_t **pids, size_t *nr_pids);
+/*
+ * Ask the session daemon where the data for this session is currently being
+ * written to. If rotations occured during a session, this call is useful to
+ * know the location of the last chunk.
+ *
+ * Return 0 and allocate chunk_path if rotations occured for this session, the
+ * caller needs to free chunk_path.
+ * Return 1 if no rotation occured during the session, chunk_path is left
+ * unallocated.
+ *
+ * Return a negative LTTng error code on error (readable with lttng_strerror).
+ *
+ * FIXME: Return an lttng_location object rather than a path.
+ */
+extern int lttng_session_get_current_archive_location(const char *session_name,
+ char **chunk_path);
+
#ifdef __cplusplus
}
#endif