Refactoring: struct lttng_kernel_channel_buffer_ops

[lttng-modules.git] / include / lttng / events-internal.h

diff --git a/include/lttng/events-internal.h b/include/lttng/events-internal.h
index f0d0b0dabd30c3eb02014fd2ec4036e9e78e424f..9a80740881d812be7fa08bc50aa1c93c5a953738 100644 (file)
--- a/include/lttng/events-internal.h
+++ b/include/lttng/events-internal.h
@@ -243,6 +243,58 @@ struct lttng_metadata_cache {
        uint64_t version;               /* Current version of the metadata */
 };
 
+struct lttng_kernel_channel_buffer_ops_private {
+       struct lttng_kernel_channel_buffer_ops *pub;    /* Public channel buffer ops interface */
+
+       struct channel *(*channel_create)(const char *name,
+                               void *priv,
+                               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);
+       int (*buffer_has_read_closed_stream)(struct channel *chan);
+       void (*buffer_read_close)(struct lib_ring_buffer *buf);
+       /*
+        * packet_avail_size returns the available size in the current
+        * packet. Note that the size returned is only a hint, since it
+        * may change due to concurrent writes.
+        */
+       size_t (*packet_avail_size)(struct channel *chan);
+       wait_queue_head_t *(*get_writer_buf_wait_queue)(struct channel *chan, int cpu);
+       wait_queue_head_t *(*get_hp_wait_queue)(struct channel *chan);
+       int (*is_finalized)(struct channel *chan);
+       int (*is_disabled)(struct channel *chan);
+       int (*timestamp_begin) (const struct lib_ring_buffer_config *config,
+                       struct lib_ring_buffer *bufb,
+                       uint64_t *timestamp_begin);
+       int (*timestamp_end) (const struct lib_ring_buffer_config *config,
+                       struct lib_ring_buffer *bufb,
+                       uint64_t *timestamp_end);
+       int (*events_discarded) (const struct lib_ring_buffer_config *config,
+                       struct lib_ring_buffer *bufb,
+                       uint64_t *events_discarded);
+       int (*content_size) (const struct lib_ring_buffer_config *config,
+                       struct lib_ring_buffer *bufb,
+                       uint64_t *content_size);
+       int (*packet_size) (const struct lib_ring_buffer_config *config,
+                       struct lib_ring_buffer *bufb,
+                       uint64_t *packet_size);
+       int (*stream_id) (const struct lib_ring_buffer_config *config,
+                       struct lib_ring_buffer *bufb,
+                       uint64_t *stream_id);
+       int (*current_timestamp) (const struct lib_ring_buffer_config *config,
+                       struct lib_ring_buffer *bufb,
+                       uint64_t *ts);
+       int (*sequence_number) (const struct lib_ring_buffer_config *config,
+                       struct lib_ring_buffer *bufb,
+                       uint64_t *seq);
+       int (*instance_id) (const struct lib_ring_buffer_config *config,
+                       struct lib_ring_buffer *bufb,
+                       uint64_t *id);
+};
+
 extern struct lttng_kernel_ctx *lttng_static_ctx;
 
 static inline