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Add ustctl_snapshot_sample_positions ustctl command
[lttng-ust.git]
/
libringbuffer
/
frontend.h
diff --git
a/libringbuffer/frontend.h
b/libringbuffer/frontend.h
index 8c8517086828d1fc5c9cf2bf2c780b8a933fc653..a2f74596eb9c06f319236309d2f36cdae2eaca99 100644
(file)
--- a/
libringbuffer/frontend.h
+++ b/
libringbuffer/frontend.h
@@
-131,6
+131,11
@@
extern int lib_ring_buffer_snapshot(struct lttng_ust_lib_ring_buffer *buf,
unsigned long *consumed,
unsigned long *produced,
struct lttng_ust_shm_handle *handle);
unsigned long *consumed,
unsigned long *produced,
struct lttng_ust_shm_handle *handle);
+extern int lib_ring_buffer_snapshot_sample_positions(
+ struct lttng_ust_lib_ring_buffer *buf,
+ unsigned long *consumed,
+ unsigned long *produced,
+ struct lttng_ust_shm_handle *handle);
extern void lib_ring_buffer_move_consumer(struct lttng_ust_lib_ring_buffer *buf,
unsigned long consumed_new,
struct lttng_ust_shm_handle *handle);
extern void lib_ring_buffer_move_consumer(struct lttng_ust_lib_ring_buffer *buf,
unsigned long consumed_new,
struct lttng_ust_shm_handle *handle);
@@
-162,9
+167,14
@@
static inline
void lib_ring_buffer_put_next_subbuf(struct lttng_ust_lib_ring_buffer *buf,
struct lttng_ust_shm_handle *handle)
{
void lib_ring_buffer_put_next_subbuf(struct lttng_ust_lib_ring_buffer *buf,
struct lttng_ust_shm_handle *handle)
{
+ struct channel *chan;
+
+ chan = shmp(handle, buf->backend.chan);
+ if (!chan)
+ return;
lib_ring_buffer_put_subbuf(buf, handle);
lib_ring_buffer_put_subbuf(buf, handle);
- lib_ring_buffer_move_consumer(buf, subbuf_align(buf->cons_snapshot,
-
shmp(handle, buf->backend.chan)),
handle);
+ lib_ring_buffer_move_consumer(buf, subbuf_align(buf->cons_snapshot,
chan),
+ handle);
}
extern void channel_reset(struct channel *chan);
}
extern void channel_reset(struct channel *chan);
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