ABI update

[lttng-modules.git] / ltt-events.h

diff --git a/ltt-events.h b/ltt-events.h
index 99edb4b12801bd3d1301f3eb7743ced4ad7a4012..b8485c35accbb62eecffae6da191bcf87905d888 100644 (file)
--- a/ltt-events.h
+++ b/ltt-events.h
@@ -11,6 +11,10 @@
 struct ltt_channel;
 struct ltt_session;
 
+enum instrum_type itype {
+       INSTRUM_TRACEPOINTS,
+};
+
 /*
  * ltt_event structure is referred to by the tracing fast path. It must be
  * kept small.
@@ -18,8 +22,10 @@ struct ltt_session;
 struct ltt_event {
        unsigned int id;
        struct ltt_channel *chan;
+       void *probe;
        void *filter;
        char *name;
+       enum instrum_type itype;
        struct list_head list;          /* Event list */
 };
 
@@ -27,29 +33,56 @@ struct ltt_channel {
        struct channel *chan;           /* Channel buffers */
        /* Event ID management */
        struct ltt_session *session;
+       struct file *file;              /* File associated to channel */
        unsigned int free_event_id;     /* Next event ID to allocate */
        struct list_head list;          /* Channel list */
-       char name[PATH_MAX];
+       wait_queue_head_t notify_wait;  /* Channel addition notif. waitqueue */
 };
 
 struct ltt_session {
        int active;                     /* Is trace session active ? */
+       struct file *file;              /* File associated to session */
        struct list_head chan;          /* Channel list head */
        struct list_head events;        /* Event list head */
        struct list_head list;          /* Session list */
-       char name[PATH_MAX];
 };
 
-struct ltt_session *ltt_session_create(char *name);
+struct ltt_trace_ops {
+       struct channel *(*channel_create)(const char *name,
+                               struct ltt_trace *trace,
+                               void *buf_addr,
+                               size_t subbuf_size, size_t num_subbuf,
+                               unsigned int switch_timer_interval,
+                               unsigned int read_timer_interval);
+       void (*channel_destroy)(struct channel *chan);
+       struct lib_ring_buffer *(*buffer_read_open)(struct channel *chan);
+       struct lib_ring_buffer *(*buffer_read_close)(struct lib_ring_buffer *buf);
+};
+
+struct ltt_transport {
+       char *name;
+       struct module *owner;
+       struct list_head node;
+       struct ltt_trace_ops ops;
+};
+
+struct ltt_session *ltt_session_create(void);
+int ltt_session_start(struct ltt_session *session);
+int ltt_session_stop(struct ltt_session *session);
 int ltt_session_destroy(struct ltt_session *session);
 
-struct ltt_channel *ltt_channel_create(struct ltt_session *session, char *name,
+struct ltt_channel *ltt_channel_create(struct ltt_session *session,
                                       int overwrite, void *buf_addr,
                                       size_t subbuf_size, size_t num_subbuf,
                                       unsigned int switch_timer_interval,
                                       unsigned int read_timer_interval);
 int _ltt_channel_destroy(struct ltt_channel *chan);
 
-struct ltt_event *ltt_event_create(struct ltt_channel *chan, char *name,
+struct ltt_event *ltt_event_create(struct ltt_channel *chan,
+                                  enum instrum_type itype,
+                                  char *name,
                                   void *filter);
 int _ltt_event_destroy(struct ltt_event *event);
+
+void ltt_transport_register(struct ltt_transport *transport);
+void ltt_transport_unregister(struct ltt_transport *transport);