SoW-2019-0002: Dynamic Snapshot

[lttng-tools.git] / src / bin / lttng-sessiond / ust-app.h

diff --git a/src/bin/lttng-sessiond/ust-app.h b/src/bin/lttng-sessiond/ust-app.h
index 25aeada6541359505041199a97135e6ab66590d6..a24b42ffd2b40f4a6574151a53e45942ea043a9c 100644 (file)
--- a/src/bin/lttng-sessiond/ust-app.h
+++ b/src/bin/lttng-sessiond/ust-app.h
@@ -1,19 +1,9 @@
 /*
- * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
- * Copyright (C) 2016 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
+ * Copyright (C) 2016 Jérémie Galarneau <jeremie.galarneau@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 published by the Free Software Foundation.
+ * SPDX-License-Identifier: GPL-2.0-only
  *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
 #ifndef _LTT_UST_APP_H
@@ -81,7 +71,7 @@ struct ust_register_msg {
  * Global applications HT used by the session daemon. This table is indexed by
  * PID using the pid_n node and pid value of an ust_app.
  */
-struct lttng_ht *ust_app_ht;
+extern struct lttng_ht *ust_app_ht;
 
 /*
  * Global applications HT used by the session daemon. This table is indexed by
@@ -89,13 +79,13 @@ struct lttng_ht *ust_app_ht;
  *
  * The 'sock' in question here is the 'command' socket.
  */
-struct lttng_ht *ust_app_ht_by_sock;
+extern struct lttng_ht *ust_app_ht_by_sock;
 
 /*
  * Global applications HT used by the session daemon. This table is indexed by
  * socket using the notify_sock_n node and notify_sock value of an ust_app.
  */
-struct lttng_ht *ust_app_ht_by_notify_sock;
+extern struct lttng_ht *ust_app_ht_by_notify_sock;
 
 /* Stream list containing ust_app_stream. */
 struct ust_app_stream_list {
@@ -122,6 +112,19 @@ struct ust_app_event {
        struct lttng_event_exclusion *exclusion;
 };
 
+struct ust_app_token_event_rule {
+       int enabled;
+       int handle;
+       struct lttng_ust_object_data *obj;
+       struct lttng_event_rule *event_rule;
+       uint64_t token;
+       struct lttng_ht_node_u64 node;
+       /* The event_rule object own this pointer */
+       const struct lttng_filter_bytecode *filter;
+       /* The event_rule object own this pointer */
+       struct lttng_event_exclusion *exclusion;
+};
+
 struct ust_app_stream {
        int handle;
        char pathname[PATH_MAX];
@@ -302,6 +305,14 @@ struct ust_app {
         * Used for path creation
         */
        time_t registration_time;
+       /*
+        * Trigger
+        */
+       struct {
+               struct lttng_ust_object_data *handle;
+               struct lttng_pipe *trigger_event_pipe;
+       } token_communication;
+       struct lttng_ht *tokens_ht;
 };
 
 #ifdef HAVE_LIBLTTNG_UST_CTL
@@ -315,8 +326,6 @@ int ust_app_stop_trace_all(struct ltt_ust_session *usess);
 int ust_app_destroy_trace_all(struct ltt_ust_session *usess);
 int ust_app_list_events(struct lttng_event **events);
 int ust_app_list_event_fields(struct lttng_event_field **fields);
-int ust_app_create_channel_glb(struct ltt_ust_session *usess,
-               struct ltt_ust_channel *uchan);
 int ust_app_create_event_glb(struct ltt_ust_session *usess,
                struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
 int ust_app_disable_channel_glb(struct ltt_ust_session *usess,
@@ -331,6 +340,8 @@ int ust_app_add_ctx_channel_glb(struct ltt_ust_session *usess,
                struct ltt_ust_channel *uchan, struct ltt_ust_context *uctx);
 void ust_app_global_update(struct ltt_ust_session *usess, struct ust_app *app);
 void ust_app_global_update_all(struct ltt_ust_session *usess);
+void ust_app_global_update_tokens(struct ust_app *app);
+void ust_app_global_update_all_tokens(void);
 
 void ust_app_clean_list(void);
 int ust_app_ht_alloc(void);
@@ -367,6 +378,8 @@ int ust_app_release_object(struct ust_app *app,
                struct lttng_ust_object_data *data);
 enum lttng_error_code ust_app_clear_session(struct ltt_session *session);
 
+int ust_app_setup_trigger_group(struct ust_app *app);
+
 static inline
 int ust_app_supported(void)
 {
@@ -455,19 +468,24 @@ static inline
 void ust_app_global_update(struct ltt_ust_session *usess, struct ust_app *app)
 {}
 static inline
-int ust_app_disable_channel_glb(struct ltt_ust_session *usess,
-               struct ltt_ust_channel *uchan)
+void ust_app_global_update_tokens(struct ust_app *app)
+{}
+static inline
+void ust_app_global_update_all_tokens(void)
+{}
+static inline
+int ust_app_setup_trigger_group(struct ust_app *app)
 {
-       return 0;
+    return 0;
 }
 static inline
-int ust_app_enable_channel_glb(struct ltt_ust_session *usess,
+int ust_app_disable_channel_glb(struct ltt_ust_session *usess,
                struct ltt_ust_channel *uchan)
 {
        return 0;
 }
 static inline
-int ust_app_create_channel_glb(struct ltt_ust_session *usess,
+int ust_app_enable_channel_glb(struct ltt_ust_session *usess,
                struct ltt_ust_channel *uchan)
 {
        return 0;