struct lttng_ust_shm_handle *handle);
void (*buffer_end) (struct lttng_ust_ring_buffer *buf, uint64_t tsc,
unsigned int subbuf_idx, unsigned long data_size,
struct lttng_ust_shm_handle *handle);
void (*buffer_end) (struct lttng_ust_ring_buffer *buf, uint64_t tsc,
unsigned int subbuf_idx, unsigned long data_size,