Add channel discarded events and lost packets stats accessors

[lttng-tools.git] / src / common / sessiond-comm / sessiond-comm.h

diff --git a/src/common/sessiond-comm/sessiond-comm.h b/src/common/sessiond-comm/sessiond-comm.h
index 1e0ee5d450004bfea111e36b2447cac4bae52842..d436094ff36d0c6a71671d380b34c13e1c106c56 100644 (file)
--- a/src/common/sessiond-comm/sessiond-comm.h
+++ b/src/common/sessiond-comm/sessiond-comm.h
@@ -6,12 +6,12 @@
  * 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.
- * 
+ *
  * 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.
@@ -218,8 +218,8 @@ struct lttcomm_proto_ops {
        int (*listen) (struct lttcomm_sock *sock, int backlog);
        ssize_t (*recvmsg) (struct lttcomm_sock *sock, void *buf, size_t len,
                        int flags);
-       ssize_t (*sendmsg) (struct lttcomm_sock *sock, void *buf, size_t len,
-                       int flags);
+       ssize_t (*sendmsg) (struct lttcomm_sock *sock, const void *buf,
+                       size_t len, int flags);
 };
 
 /*
@@ -270,6 +270,8 @@ struct lttcomm_session_msg {
                struct {
                        char channel_name[LTTNG_SYMBOL_NAME_LEN];
                        struct lttng_event_context ctx LTTNG_PACKED;
+                       uint32_t provider_name_len;
+                       uint32_t context_name_len;
                } LTTNG_PACKED context;
                /* Use by register_consumer */
                struct {
@@ -336,6 +338,45 @@ struct lttng_event_exclusion {
        char names[0][LTTNG_SYMBOL_NAME_LEN];
 } LTTNG_PACKED;
 
+#define LTTNG_EVENT_EXCLUSION_NAME_AT(_exclusion, _i) \
+       (&(_exclusion)->names[_i][0])
+
+/*
+ * Event command header.
+ */
+struct lttcomm_event_command_header {
+       /* Number of events */
+       uint32_t nb_events;
+} LTTNG_PACKED;
+
+/*
+ * Event extended info header. This is the structure preceding each
+ * extended info data.
+ */
+struct lttcomm_event_extended_header {
+       /*
+        * Size of filter string immediately following this header.
+        * This size includes the terminal null character.
+        */
+       uint32_t filter_len;
+
+       /*
+        * Number of exclusion names, immediately following the filter
+        * string. Each exclusion name has a fixed length of
+        * LTTNG_SYMBOL_NAME_LEN bytes, including the terminal null
+        * character.
+        */
+       uint32_t nb_exclusions;
+} LTTNG_PACKED;
+
+/*
+ * Channel extended info.
+ */
+struct lttcomm_channel_extended {
+       uint64_t discarded_events;
+       uint64_t lost_packets;
+} LTTNG_PACKED;
+
 /*
  * Data structure for the response from sessiond to the lttng client.
  */
@@ -343,9 +384,8 @@ struct lttcomm_lttng_msg {
        uint32_t cmd_type;      /* enum lttcomm_sessiond_command */
        uint32_t ret_code;      /* enum lttcomm_return_code */
        uint32_t pid;           /* pid_t */
+       uint32_t cmd_header_size;
        uint32_t data_size;
-       /* Contains: trace_name + data */
-       char payload[];
 } LTTNG_PACKED;
 
 struct lttcomm_lttng_output_id {