+#ifndef _CTF_TRACE_H
+#define _CTF_TRACE_H
+
/*
* Copyright (C) 2013 - Julien Desfossez <jdesfossez@efficios.com>
* David Goulet <dgoulet@efficios.com>
+ * 2015 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License, version 2 only, as
* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#ifndef _CTF_TRACE_H
-#define _CTF_TRACE_H
-
#include <inttypes.h>
+#include <urcu/ref.h>
#include <common/hashtable/hashtable.h>
-#include "lttng-relayd.h"
+#include "session.h"
+#include "stream.h"
+#include "viewer-stream.h"
struct ctf_trace {
- int refcount;
+ struct urcu_ref ref; /* Every stream has a ref on the trace. */
+ struct relay_session *session; /* Back ref to trace session */
+
+ /* Trace sub-folder relative to the session output path. */
+ char *path;
+
+ /*
+ * The ctf_trace lock nests inside the session lock.
+ */
+ pthread_mutex_t lock;
uint64_t id;
- uint64_t metadata_received;
- uint64_t metadata_sent;
- struct relay_stream *metadata_stream;
+ struct relay_viewer_stream *viewer_metadata_stream; /* RCU protected */
+
+ /*
+ * Relay streams associated with this ctf trace.
+ * Updates are protected by the stream_list lock.
+ * Traversals are protected by RCU.
+ */
+ struct cds_list_head stream_list;
+ pthread_mutex_t stream_list_lock;
+
+ /*
+ * Node within session trace hash table. Node is indexed by
+ * stream path name.
+ */
+ struct lttng_ht_node_str node;
+ struct rcu_head rcu_node; /* For call_rcu teardown. */
};
-void ctf_trace_assign(struct lttng_ht *ht, struct relay_stream *stream);
-struct ctf_trace *ctf_trace_create(void);
-void ctf_trace_try_destroy(struct ctf_trace *obj);
+struct ctf_trace *ctf_trace_get_by_path_or_create(struct relay_session *session,
+ const char *subpath);
+bool ctf_trace_get(struct ctf_trace *trace);
+void ctf_trace_put(struct ctf_trace *trace);
+
+int ctf_trace_close(struct ctf_trace *trace);
+
+struct relay_viewer_stream *ctf_trace_get_viewer_metadata_stream(struct ctf_trace *trace);
#endif /* _CTF_TRACE_H */