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Revert "Use ENOMSG as fallback for ENODATA on freebsd"
[lttng-ust.git]
/
libringbuffer
/
frontend.h
diff --git
a/libringbuffer/frontend.h
b/libringbuffer/frontend.h
index e1d9d575599e2baee592ccbe87b4c45097c2bf3d..ce79cdeed2d3f1ed24ff90576fd6281b99b1a260 100644
(file)
--- a/
libringbuffer/frontend.h
+++ b/
libringbuffer/frontend.h
@@
-34,17
+34,26
@@
* buf_addr is a pointer the the beginning of the preallocated buffer contiguous
* address mapping. It is used only by RING_BUFFER_STATIC configuration. It can
* be set to NULL for other backends.
* buf_addr is a pointer the the beginning of the preallocated buffer contiguous
* address mapping. It is used only by RING_BUFFER_STATIC configuration. It can
* be set to NULL for other backends.
+ *
+ * priv_data (output) is set to a pointer into a "priv_data_len"-sized
+ * memory area for client-specific data. This memory is managed by lib
+ * ring buffer. priv_data_align is the alignment required for the
+ * private data area.
*/
extern
struct lttng_ust_shm_handle *channel_create(const struct lttng_ust_lib_ring_buffer_config *config,
*/
extern
struct lttng_ust_shm_handle *channel_create(const struct lttng_ust_lib_ring_buffer_config *config,
- const char *name, void *priv,
+ const char *name,
+ void **priv_data,
+ size_t priv_data_align,
+ size_t priv_data_size,
+ void *priv_data_init,
void *buf_addr,
size_t subbuf_size, size_t num_subbuf,
unsigned int switch_timer_interval,
unsigned int read_timer_interval,
void *buf_addr,
size_t subbuf_size, size_t num_subbuf,
unsigned int switch_timer_interval,
unsigned int read_timer_interval,
- int *
shm_fd, int
*wait_fd,
- uint64_t *memory_map_size);
+ int *
*shm_fd, int *
*wait_fd,
+ uint64_t *
*
memory_map_size);
/* channel_handle_create - for consumer. */
extern
/* channel_handle_create - for consumer. */
extern
@@
-57,12
+66,11
@@
int channel_handle_add_stream(struct lttng_ust_shm_handle *handle,
int shm_fd, int wait_fd, uint64_t memory_map_size);
/*
int shm_fd, int wait_fd, uint64_t memory_map_size);
/*
- * channel_destroy returns the private data pointer. It finalizes all channel's
- * buffers, waits for readers to release all references, and destroys the
- * channel.
+ * channel_destroy finalizes all channel's buffers, waits for readers to
+ * release all references, and destroys the channel.
*/
extern
*/
extern
-void
*
channel_destroy(struct channel *chan, struct lttng_ust_shm_handle *handle,
+void channel_destroy(struct channel *chan, struct lttng_ust_shm_handle *handle,
int shadow);
int shadow);
@@
-81,8
+89,8
@@
extern struct lttng_ust_lib_ring_buffer *channel_get_ring_buffer(
const struct lttng_ust_lib_ring_buffer_config *config,
struct channel *chan, int cpu,
struct lttng_ust_shm_handle *handle,
const struct lttng_ust_lib_ring_buffer_config *config,
struct channel *chan, int cpu,
struct lttng_ust_shm_handle *handle,
- int *
shm_fd, int
*wait_fd,
- uint64_t *memory_map_size);
+ int *
*shm_fd, int *
*wait_fd,
+ uint64_t *
*
memory_map_size);
extern int lib_ring_buffer_open_read(struct lttng_ust_lib_ring_buffer *buf,
struct lttng_ust_shm_handle *handle,
int shadow);
extern int lib_ring_buffer_open_read(struct lttng_ust_lib_ring_buffer *buf,
struct lttng_ust_shm_handle *handle,
int shadow);
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