X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-relayd%2Fctf-trace.hpp;fp=src%2Fbin%2Flttng-relayd%2Fctf-trace.hpp;h=dbf7d3fa21166d533507550f02261e41b26e887e;hp=0000000000000000000000000000000000000000;hb=c9e313bc594f40a86eed237dce222c0fc99c957f;hpb=4878de5c7deb512bbdac4fdfc498907efa06fb7c

diff --git a/src/bin/lttng-relayd/ctf-trace.hpp b/src/bin/lttng-relayd/ctf-trace.hpp
new file mode 100644
index 000000000..dbf7d3fa2
--- /dev/null
+++ b/src/bin/lttng-relayd/ctf-trace.hpp
@@ -0,0 +1,67 @@
+#ifndef _CTF_TRACE_H
+#define _CTF_TRACE_H
+
+/*
+ * Copyright (C) 2013 Julien Desfossez <jdesfossez@efficios.com>
+ * Copyright (C) 2013 David Goulet <dgoulet@efficios.com>
+ * Copyright (C) 2015 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-only
+ *
+ */
+
+#include <inttypes.h>
+#include <urcu/ref.h>
+
+#include <common/hashtable/hashtable.hpp>
+
+#include "session.hpp"
+#include "stream.hpp"
+#include "viewer-stream.hpp"
+
+struct ctf_trace {
+	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;
+	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. */
+
+	/*
+	 * True if the metadata stream of this trace was sent the viewer in the
+	 * past.
+	 */
+	bool metadata_stream_sent_to_viewer;
+};
+
+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 */