X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Fsession.h;h=da3805658cd28e1255292d6250ae6882f779a6d0;hp=204701429ded69ba43c77b8917306bc347330172;hb=ccbdaca404a66cf124ec7e4926b1507327f6d165;hpb=46ef21888c975515837d5dab104c938c424792ed

diff --git a/src/bin/lttng-sessiond/session.h b/src/bin/lttng-sessiond/session.h
index 204701429..da3805658 100644
--- a/src/bin/lttng-sessiond/session.h
+++ b/src/bin/lttng-sessiond/session.h
@@ -36,6 +36,8 @@ struct ltt_ust_session;
 
 typedef void (*ltt_session_destroy_notifier)(const struct ltt_session *session,
 		void *user_data);
+typedef void (*ltt_session_clear_notifier)(const struct ltt_session *session,
+		void *user_data);
 
 /*
  * Tracing session list
@@ -77,6 +79,8 @@ struct ltt_session {
 	bool has_auto_generated_name;
 	bool name_contains_creation_time;
 	char hostname[HOST_NAME_MAX]; /* Local hostname. */
+	/* Path of the last closed chunk. */
+	char last_chunk_path[LTTNG_PATH_MAX];
 	time_t creation_time;
 	struct ltt_kernel_session *kernel_session;
 	struct ltt_ust_session *ust_session;
@@ -171,6 +175,12 @@ struct ltt_session {
 	 * chunk.
 	 */
 	bool rotated_after_last_stop;
+	/*
+	 * Track whether the session was cleared after last stop. All subsequent
+	 * clear (without prior start) will succeed, but will be effect-less. A
+	 * subsequent rotate (without prior start) will return an error.
+	 */
+	bool cleared_after_last_stop;
 	/*
 	 * Condition and trigger for size-based rotations.
 	 */
@@ -185,13 +195,14 @@ struct ltt_session {
 	char *last_archived_chunk_name;
 	LTTNG_OPTIONAL(uint64_t) last_archived_chunk_id;
 	struct lttng_dynamic_array destroy_notifiers;
+	struct lttng_dynamic_array clear_notifiers;
 	/* Session base path override. Set non-null. */
 	char *base_path;
 };
 
 /* Prototypes */
 enum lttng_error_code session_create(const char *name, uid_t uid, gid_t gid,
-		const char *base_path, struct ltt_session **out_session);
+		struct ltt_session **out_session);
 void session_lock(struct ltt_session *session);
 void session_lock_list(void);
 int session_trylock_list(void);
@@ -202,6 +213,10 @@ void session_destroy(struct ltt_session *session);
 int session_add_destroy_notifier(struct ltt_session *session,
 		ltt_session_destroy_notifier notifier, void *user_data);
 
+int session_add_clear_notifier(struct ltt_session *session,
+		ltt_session_clear_notifier notifier, void *user_data);
+void session_notify_clear(struct ltt_session *session);
+
 bool session_get(struct ltt_session *session);
 void session_put(struct ltt_session *session);
 
@@ -249,9 +264,10 @@ int session_set_trace_chunk(struct ltt_session *session,
  * Close a chunk on the remote peers of a session. Has no effect on the
  * ltt_session itself.
  */
-int session_close_trace_chunk(const struct ltt_session *session,
+int session_close_trace_chunk(struct ltt_session *session,
 		struct lttng_trace_chunk *trace_chunk,
-		const enum lttng_trace_chunk_command_type *close_command);
+		enum lttng_trace_chunk_command_type close_command,
+		char *path);
 
 bool session_output_supports_trace_chunks(const struct ltt_session *session);