src/bin/lttng-relayd/ctf-trace.h

   1 /*
   2  * Copyright (C) 2013 - Julien Desfossez <jdesfossez@efficios.com>
   3  *                      David Goulet <dgoulet@efficios.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License, version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc., 51
  16  * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #ifndef _CTF_TRACE_H
  20 #define _CTF_TRACE_H
  21
  22 #include <inttypes.h>
  23
  24 #include <common/hashtable/hashtable.h>
  25
  26 #include "lttng-relayd.h"
  27 #include "session.h"
  28
  29 struct ctf_trace {
  30         int refcount;
  31         unsigned int invalid_flag:1;
  32         uint64_t id;
  33         uint64_t metadata_received;
  34         uint64_t metadata_sent;
  35         struct relay_stream *metadata_stream;
  36         struct relay_viewer_stream *viewer_metadata_stream;
  37         /* Node indexed by stream path name in the corresponding session. */
  38         struct lttng_ht_node_str node;
  39
  40         /* Relay stream associated with this ctf trace. */
  41         struct cds_list_head stream_list;
  42 };
  43
  44 static inline void ctf_trace_get_ref(struct ctf_trace *trace)
  45 {
  46         uatomic_inc(&trace->refcount);
  47 }
  48
  49 static inline void ctf_trace_put_ref(struct ctf_trace *trace)
  50 {
  51         uatomic_add(&trace->refcount, -1);
  52 }
  53
  54 void ctf_trace_assign(struct relay_stream *stream);
  55 struct ctf_trace *ctf_trace_create(char *path_name);
  56 void ctf_trace_destroy(struct ctf_trace *obj);
  57 void ctf_trace_try_destroy(struct relay_session *session,
  58                 struct ctf_trace *ctf_trace);
  59 struct ctf_trace *ctf_trace_find_by_path(struct lttng_ht *ht,
  60                 char *path_name);
  61 void ctf_trace_add(struct lttng_ht *ht, struct ctf_trace *trace);
  62 void ctf_trace_delete(struct lttng_ht *ht, struct ctf_trace *trace);
  63
  64 #endif /* _CTF_TRACE_H */