Add support for UST application registration

[lttng-tools.git] / ltt-sessiond / ltt-sessiond.h

diff --git a/ltt-sessiond/ltt-sessiond.h b/ltt-sessiond/ltt-sessiond.h
index acdc9724b185d1c05906674ff20ff9de91fb268a..cc6a6ba155ced9e26b6cec7b5f9f4e24a54bb968 100644 (file)
--- a/ltt-sessiond/ltt-sessiond.h
+++ b/ltt-sessiond/ltt-sessiond.h
@@ -8,7 +8,7 @@
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
@@ -19,10 +19,15 @@
 #ifndef _LTT_SESSIOND_H
 #define _LTT_SESSIOND_H
 
-#define DEFAULT_HOME_DIR               "/tmp"
-#define DEFAULT_UST_SOCK_DIR           DEFAULT_HOME_DIR "/ust-app-socks"
-#define DEFAULT_GLOBAL_APPS_PIPE       DEFAULT_UST_SOCK_DIR "/global"
-#define DEFAULT_TRACE_OUTPUT           DEFAULT_HOME_DIR "/lttng"
+#define _LGPL_SOURCE
+#include <urcu/wfqueue.h>
+
+#include "traceable-app.h"
+
+#define DEFAULT_HOME_DIR            "/tmp"
+#define DEFAULT_UST_SOCK_DIR        DEFAULT_HOME_DIR "/ust-app-socks"
+#define DEFAULT_GLOBAL_APPS_PIPE    DEFAULT_UST_SOCK_DIR "/global"
+#define DEFAULT_TRACE_OUTPUT        DEFAULT_HOME_DIR "/lttng"
 
 struct module_param {
        const char *name;
@@ -68,4 +73,19 @@ struct command_ctx {
        struct lttcomm_session_msg *lsm;
 };
 
+struct ust_command {
+       int sock;
+       struct ust_register_msg reg_msg;
+       struct cds_wfq_node node;
+};
+
+/*
+ * Queue used to enqueue UST registration request (ust_commant) and protected
+ * by a futex with a scheme N wakers / 1 waiters. See futex.c/.h
+ */
+struct ust_cmd_queue {
+       int32_t futex;
+       struct cds_wfq_queue queue;
+};
+
 #endif /* _LTT_SESSIOND_H */