Implement the relayd live features

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

diff --git a/src/bin/lttng-sessiond/session.h b/src/bin/lttng-sessiond/session.h
index d49cf430ac627379459911928f4dc40d63add329..de98bde514f4e62d56984faa455d7905f1dd3325 100644 (file)
--- a/src/bin/lttng-sessiond/session.h
+++ b/src/bin/lttng-sessiond/session.h
@@ -20,8 +20,12 @@
 
 #include <urcu/list.h>
 
+#include <common/hashtable/hashtable.h>
+
+#include "snapshot.h"
 #include "trace-kernel.h"
-#include "trace-ust.h"
+
+struct ltt_ust_session;
 
 /*
  * Tracing session list
@@ -43,7 +47,7 @@ struct ltt_session_list {
         * Session unique ID generator. The session list lock MUST be
         * upon update and read of this counter.
         */
-       unsigned int next_uuid;
+       uint64_t next_uuid;
 
        /* Linked list head */
        struct cds_list_head head;
@@ -55,7 +59,8 @@ struct ltt_session_list {
  */
 struct ltt_session {
        char name[NAME_MAX];
-       char path[PATH_MAX];
+       /* FIXME : size */
+       char hostname[PATH_MAX]; /* local hostname, FIXME : could be useful to have that user defined too */
        struct ltt_kernel_session *kernel_session;
        struct ltt_ust_session *ust_session;
        /*
@@ -66,7 +71,7 @@ struct ltt_session {
        pthread_mutex_t lock;
        struct cds_list_head list;
        int enabled;    /* enabled/started flag */
-       unsigned int id;                /* session unique identifier */
+       uint64_t id;            /* session unique identifier */
        /* UID/GID of the user owning the session */
        uid_t uid;
        gid_t gid;
@@ -85,10 +90,25 @@ struct ltt_session {
 
        /* Did a start command occured before the kern/ust session creation? */
        unsigned int started;
+
+       /* Snapshot representation in a session. */
+       struct snapshot snapshot;
+       /* Indicate if the session has to output the traces or not. */
+       unsigned int output_traces;
+       /*
+        * This session is in snapshot mode. This means that every channel enabled
+        * will be set in overwrite mode and mmap. It is considered exclusively for
+        * snapshot purposes.
+        */
+       unsigned int snapshot_mode;
+       /*
+        * Timer set when the session is created for live reading.
+        */
+       int live_timer;
 };
 
 /* Prototypes */
-int session_create(char *name, char *path, uid_t uid, gid_t gid);
+int session_create(char *name, uid_t uid, gid_t gid);
 int session_destroy(struct ltt_session *session);
 
 void session_lock(struct ltt_session *session);