X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Fsession.h;h=883a265545e6965e2a82286cbcb6592d9781168c;hp=a60354d756ca45f0c5885dfdf53c7e473a0bc0b6;hb=a2b988e2cc31f76365b600ca4e3a26604de00022;hpb=b02f5986773579a5a331d3e108ba52ec9acde2e1

diff --git a/src/bin/lttng-sessiond/session.h b/src/bin/lttng-sessiond/session.h
index a60354d75..883a26554 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
@@ -170,7 +172,8 @@ struct ltt_session {
 	 * Keep a state if this session was rotated after the last stop command.
 	 * We only allow one rotation after a stop. At destroy, we also need to
 	 * know if a rotation occurred since the last stop to rename the current
-	 * chunk.
+	 * chunk. After a stop followed by rotate, all subsequent clear
+	 * (without prior start) will succeed, but will be effect-less.
 	 */
 	bool rotated_after_last_stop;
 	/*
@@ -179,6 +182,10 @@ struct ltt_session {
 	 * subsequent rotate (without prior start) will return an error.
 	 */
 	bool cleared_after_last_stop;
+	/*
+	 * True if the session has had an explicit non-quiet rotation.
+	 */
+	bool rotated;
 	/*
 	 * Condition and trigger for size-based rotations.
 	 */
@@ -193,6 +200,7 @@ 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;
 };
@@ -210,6 +218,10 @@ 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);