-struct ustctl_consumer_channel *
- ustctl_create_channel(struct ustctl_consumer_channel_attr *attr);
-/*
- * Each stream created needs to be destroyed before calling
- * ustctl_destroy_channel().
- */
-void ustctl_destroy_channel(struct ustctl_consumer_channel *chan);
-
-int ustctl_send_channel_to_sessiond(int sock,
- struct ustctl_consumer_channel *channel);
-int ustctl_channel_close_wait_fd(struct ustctl_consumer_channel *consumer_chan);
-int ustctl_channel_close_wakeup_fd(struct ustctl_consumer_channel *consumer_chan);
-int ustctl_channel_get_wait_fd(struct ustctl_consumer_channel *consumer_chan);
-int ustctl_channel_get_wakeup_fd(struct ustctl_consumer_channel *consumer_chan);
-
-int ustctl_write_metadata_to_channel(
- struct ustctl_consumer_channel *channel,
- const char *metadata_str, /* NOT null-terminated */
- size_t len); /* metadata length */
-
-/*
- * Send a NULL stream to finish iteration over all streams of a given
- * channel.
- */
-int ustctl_send_stream_to_sessiond(int sock,
- struct ustctl_consumer_stream *stream);
-int ustctl_stream_close_wait_fd(struct ustctl_consumer_stream *stream);
-int ustctl_stream_close_wakeup_fd(struct ustctl_consumer_stream *stream);
-int ustctl_stream_get_wait_fd(struct ustctl_consumer_stream *stream);
-int ustctl_stream_get_wakeup_fd(struct ustctl_consumer_stream *stream);
-
-/* Create/destroy stream buffers for read */
-struct ustctl_consumer_stream *
- ustctl_create_stream(struct ustctl_consumer_channel *channel,
- int cpu);
-void ustctl_destroy_stream(struct ustctl_consumer_stream *stream);
-
-/* For mmap mode, readable without "get" operation */
-int ustctl_get_mmap_len(struct ustctl_consumer_stream *stream,
- unsigned long *len);
-int ustctl_get_max_subbuf_size(struct ustctl_consumer_stream *stream,
- unsigned long *len);
-
-/*
- * For mmap mode, operate on the current packet (between get/put or
- * get_next/put_next).
- */
-void *ustctl_get_mmap_base(struct ustctl_consumer_stream *stream);
-int ustctl_get_mmap_read_offset(struct ustctl_consumer_stream *stream,
- unsigned long *off);
-int ustctl_get_subbuf_size(struct ustctl_consumer_stream *stream,
- unsigned long *len);
-int ustctl_get_padded_subbuf_size(struct ustctl_consumer_stream *stream,
- unsigned long *len);
-int ustctl_get_next_subbuf(struct ustctl_consumer_stream *stream);
-int ustctl_put_next_subbuf(struct ustctl_consumer_stream *stream);
-
-/* snapshot */
-
-int ustctl_snapshot(struct ustctl_consumer_stream *stream);
-int ustctl_snapshot_get_consumed(struct ustctl_consumer_stream *stream,
- unsigned long *pos);
-int ustctl_snapshot_get_produced(struct ustctl_consumer_stream *stream,
- unsigned long *pos);
-int ustctl_get_subbuf(struct ustctl_consumer_stream *stream,
- unsigned long *pos);
-int ustctl_put_subbuf(struct ustctl_consumer_stream *stream);
-
-void ustctl_flush_buffer(struct ustctl_consumer_stream *stream,
- int producer_active);
-
-/* event registry management */
-
-enum ustctl_socket_type {
- USTCTL_SOCKET_CMD = 0,
- USTCTL_SOCKET_NOTIFY = 1,
-};
-
-enum ustctl_notify_cmd {
- USTCTL_NOTIFY_CMD_EVENT = 0,
- USTCTL_NOTIFY_CMD_CHANNEL = 1,
- USTCTL_NOTIFY_CMD_ENUM = 2,
-};
-
-enum ustctl_channel_header {
- USTCTL_CHANNEL_HEADER_UNKNOWN = 0,
- USTCTL_CHANNEL_HEADER_COMPACT = 1,
- USTCTL_CHANNEL_HEADER_LARGE = 2,
-};
-
-/* event type structures */
-
-enum ustctl_abstract_types {
- ustctl_atype_integer,
- ustctl_atype_enum,
- ustctl_atype_array,
- ustctl_atype_sequence,
- ustctl_atype_string,
- ustctl_atype_float,
- NR_USTCTL_ABSTRACT_TYPES,
-};
-
-enum ustctl_string_encodings {
- ustctl_encode_none = 0,
- ustctl_encode_UTF8 = 1,
- ustctl_encode_ASCII = 2,
- NR_USTCTL_STRING_ENCODINGS,
-};
-
-#define USTCTL_UST_INTEGER_TYPE_PADDING 24
-struct ustctl_integer_type {
- uint32_t size; /* in bits */
- uint32_t signedness;
- uint32_t reverse_byte_order;
- uint32_t base; /* 2, 8, 10, 16, for pretty print */
- enum ustctl_string_encodings encoding;
- uint16_t alignment; /* in bits */
- char padding[USTCTL_UST_INTEGER_TYPE_PADDING];
-} LTTNG_PACKED;
-
-#define USTCTL_UST_FLOAT_TYPE_PADDING 24
-struct ustctl_float_type {
- uint32_t exp_dig; /* exponent digits, in bits */
- uint32_t mant_dig; /* mantissa digits, in bits */
- uint32_t reverse_byte_order;
- uint16_t alignment; /* in bits */
- char padding[USTCTL_UST_FLOAT_TYPE_PADDING];
-} LTTNG_PACKED;
-
-#define USTCTL_UST_ENUM_ENTRY_PADDING 32
-struct ustctl_enum_entry {
- uint64_t start, end; /* start and end are inclusive */
- char string[LTTNG_UST_SYM_NAME_LEN];
- char padding[USTCTL_UST_ENUM_ENTRY_PADDING];
-};
-
-#define USTCTL_UST_BASIC_TYPE_PADDING 296
-union _ustctl_basic_type {
- struct ustctl_integer_type integer;
- struct {
- enum ustctl_string_encodings encoding;
- } string;
- struct ustctl_float_type _float;
- struct {
- char name[LTTNG_UST_SYM_NAME_LEN];
- } enumeration;
- char padding[USTCTL_UST_BASIC_TYPE_PADDING];
-} LTTNG_PACKED;
-
-struct ustctl_basic_type {
- enum ustctl_abstract_types atype;
- union {
- union _ustctl_basic_type basic;
- } u;
-} LTTNG_PACKED;
-
-#define USTCTL_UST_TYPE_PADDING 128
-struct ustctl_type {
- enum ustctl_abstract_types atype;
- union {
- union _ustctl_basic_type basic;
- struct {
- struct ustctl_basic_type elem_type;
- uint32_t length; /* num. elems. */
- } array;
- struct {
- struct ustctl_basic_type length_type;
- struct ustctl_basic_type elem_type;
- } sequence;
- char padding[USTCTL_UST_TYPE_PADDING];
- } u;
-} LTTNG_PACKED;
-
-#define USTCTL_UST_FIELD_PADDING 28
-struct ustctl_field {
- char name[LTTNG_UST_SYM_NAME_LEN];
- struct ustctl_type type;
- char padding[USTCTL_UST_FIELD_PADDING];
-} LTTNG_PACKED;
-
-/*
- * Returns 0 on success, negative error value on error.
- * If an error other than -LTTNG_UST_ERR_UNSUP_MAJOR is returned,
- * the output fields are not populated.
- */
-int ustctl_recv_reg_msg(int sock,
- enum ustctl_socket_type *type,
- uint32_t *major,
- uint32_t *minor,
- uint32_t *pid,
- uint32_t *ppid,
- uint32_t *uid,
- uint32_t *gid,
- uint32_t *bits_per_long,
- uint32_t *uint8_t_alignment,
- uint32_t *uint16_t_alignment,
- uint32_t *uint32_t_alignment,
- uint32_t *uint64_t_alignment,
- uint32_t *long_alignment,
- int *byte_order,
- char *name); /* size LTTNG_UST_ABI_PROCNAME_LEN */
-
-/*
- * Returns 0 on success, negative UST or system error value on error.
- * Receive the notification command. The "notify_cmd" can then be used
- * by the caller to find out which ustctl_recv_* function should be
- * called to receive the notification, and which ustctl_reply_* is
- * appropriate.
- */
-int ustctl_recv_notify(int sock, enum ustctl_notify_cmd *notify_cmd);
-
-/*
- * Returns 0 on success, negative UST or system error value on error.
- */
-int ustctl_recv_register_event(int sock,
- int *session_objd, /* session descriptor (output) */
- int *channel_objd, /* channel descriptor (output) */
- char *event_name, /*
- * event name (output,
- * size LTTNG_UST_SYM_NAME_LEN)
- */
- int *loglevel_value,
- char **signature, /*
- * event signature
- * (output, dynamically
- * allocated, must be free(3)'d
- * by the caller if function
- * returns success.)
- */
- size_t *nr_fields,
- struct ustctl_field **fields,
- char **model_emf_uri);
-
-/*
- * Returns 0 on success, negative error value on error.
- */
-int ustctl_reply_register_event(int sock,
- uint32_t id, /* event id (input) */
- int ret_code); /* return code. 0 ok, negative error */
-
-/*
- * Returns 0 on success, negative UST or system error value on error.
- */
-int ustctl_recv_register_enum(int sock,
- int *session_objd,
- char *enum_name,
- struct ustctl_enum_entry **entries,
- unsigned int *nr_entries);
-
-/*
- * Returns 0 on success, negative error value on error.
- */
-int ustctl_reply_register_enum(int sock,
- int64_t id, /* enum id (input) */
- int ret_code);
-
-/*
- * Returns 0 on success, negative UST or system error value on error.
- */
-int ustctl_recv_register_channel(int sock,
- int *session_objd, /* session descriptor (output) */
- int *channel_objd, /* channel descriptor (output) */
- size_t *nr_fields, /* context fields */
- struct ustctl_field **fields);
-
-/*
- * Returns 0 on success, negative error value on error.
- */
-int ustctl_reply_register_channel(int sock,
- uint32_t chan_id,
- enum ustctl_channel_header header_type,
- int ret_code); /* return code. 0 ok, negative error */