- struct lttng_channel *chan),
- void (*get_value)(struct lttng_ust_ctx_field *field,
- struct lttng_ust_ctx_value *value));
+ struct lttng_ust_channel_buffer *chan),
+ void (*get_value)(void *priv,
+ struct lttng_ust_ctx_value *value),
+ void *priv)
+ __attribute__((visibility("hidden")));