Add create session snapshot API in lttng-sessiond

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

diff --git a/src/bin/lttng-sessiond/trace-ust.h b/src/bin/lttng-sessiond/trace-ust.h
index 87fe412d6b862ed0c5eed27af988c55affbdabbd..5ca7964ea40c074e853e4a49cd7c28f37a28cab4 100644 (file)
--- a/src/bin/lttng-sessiond/trace-ust.h
+++ b/src/bin/lttng-sessiond/trace-ust.h
@@ -54,11 +54,12 @@ struct ltt_ust_channel {
        uint64_t id;    /* unique id per session. */
        unsigned int enabled;
        char name[LTTNG_UST_SYM_NAME_LEN];
-       char pathname[PATH_MAX];
        struct lttng_ust_channel_attr attr;
        struct lttng_ht *ctx;
        struct lttng_ht *events;
        struct lttng_ht_node_str node;
+       uint64_t tracefile_size;
+       uint64_t tracefile_count;
 };
 
 /* UST Metadata */
@@ -78,9 +79,8 @@ struct ltt_ust_domain_global {
 
 /* UST session */
 struct ltt_ust_session {
-       int id;    /* Unique identifier of session */
+       uint64_t id;    /* Unique identifier of session */
        int start_trace;
-       char pathname[PATH_MAX];
        struct ltt_ust_domain_global domain_global;
        /* UID/GID of the user owning the session */
        uid_t uid;
@@ -105,6 +105,9 @@ struct ltt_ust_session {
        uint64_t next_channel_id;
        /* Once this value reaches UINT32_MAX, no more id can be allocated. */
        uint64_t used_channel_id;
+       /* Tell or not if the session has to output the traces. */
+       unsigned int output_traces;
+       unsigned int snapshot_mode;
 };
 
 /*
@@ -153,15 +156,15 @@ struct ltt_ust_channel *trace_ust_find_channel_by_name(struct lttng_ht *ht,
 /*
  * Create functions malloc() the data structure.
  */
-struct ltt_ust_session *trace_ust_create_session(char *path,
-               unsigned int session_id);
-struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *attr,
-               char *path);
+struct ltt_ust_session *trace_ust_create_session(uint64_t session_id);
+struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *attr);
 struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev,
                struct lttng_filter_bytecode *filter);
 struct ltt_ust_metadata *trace_ust_create_metadata(char *path);
 struct ltt_ust_context *trace_ust_create_context(
                struct lttng_event_context *ctx);
+void trace_ust_delete_channel(struct lttng_ht *ht,
+               struct ltt_ust_channel *channel);
 
 /*
  * Destroy functions free() the data structure and remove from linked list if
@@ -192,14 +195,12 @@ struct ltt_ust_channel *trace_ust_find_channel_by_name(struct lttng_ht *ht,
 }
 
 static inline
-struct ltt_ust_session *trace_ust_create_session(char *path,
-               unsigned int session_id)
+struct ltt_ust_session *trace_ust_create_session(unsigned int session_id)
 {
        return NULL;
 }
 static inline
-struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *attr,
-               char *path)
+struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *attr)
 {
        return NULL;
 }
@@ -245,6 +246,12 @@ static inline struct ltt_ust_event *trace_ust_find_event(struct lttng_ht *ht,
 {
        return NULL;
 }
+static inline
+void trace_ust_delete_channel(struct lttng_ht *ht,
+               struct ltt_ust_channel *channel)
+{
+       return;
+}
 
 #endif /* HAVE_LIBLTTNG_UST_CTL */