-#define LTTNG_UST_CHANNEL_DATA_MAX_LEN 1048576U
-struct lttng_ust_channel {
- uint64_t len;
- enum lttng_ust_chan_type type;
- char padding[LTTNG_UST_CHANNEL_PADDING];
- char data[]; /* variable sized data */
-} LTTNG_PACKED;
-
-#define LTTNG_UST_STREAM_PADDING1 (LTTNG_UST_SYM_NAME_LEN + 32)
-struct lttng_ust_stream {
- uint64_t len; /* shm len */
- uint32_t stream_nr; /* stream number */
- char padding[LTTNG_UST_STREAM_PADDING1];
- /*
- * shm_fd and wakeup_fd are send over unix socket as file
- * descriptors after this structure.
- */
-} LTTNG_PACKED;
-
-#define LTTNG_UST_EVENT_PADDING1 16
-#define LTTNG_UST_EVENT_PADDING2 (LTTNG_UST_SYM_NAME_LEN + 32)
-struct lttng_ust_event {
- enum lttng_ust_instrumentation instrumentation;
- char name[LTTNG_UST_SYM_NAME_LEN]; /* event name */
-
- enum lttng_ust_loglevel_type loglevel_type;
- int loglevel; /* value, -1: all */
- char padding[LTTNG_UST_EVENT_PADDING1];
-
- /* Per instrumentation type configuration */
- union {
- char padding[LTTNG_UST_EVENT_PADDING2];
- } u;
-} LTTNG_PACKED;
-
-enum lttng_ust_field_type {
- LTTNG_UST_FIELD_OTHER = 0,
- LTTNG_UST_FIELD_INTEGER = 1,
- LTTNG_UST_FIELD_ENUM = 2,
- LTTNG_UST_FIELD_FLOAT = 3,
- LTTNG_UST_FIELD_STRING = 4,
-};
-
-#define LTTNG_UST_FIELD_ITER_PADDING (LTTNG_UST_SYM_NAME_LEN + 28)
-struct lttng_ust_field_iter {
- char event_name[LTTNG_UST_SYM_NAME_LEN];
- char field_name[LTTNG_UST_SYM_NAME_LEN];
- enum lttng_ust_field_type type;
- int loglevel; /* event loglevel */
- int nowrite;
- char padding[LTTNG_UST_FIELD_ITER_PADDING];
-} LTTNG_PACKED;
-
-enum lttng_ust_context_type {
- LTTNG_UST_CONTEXT_VTID = 0,
- LTTNG_UST_CONTEXT_VPID = 1,
- LTTNG_UST_CONTEXT_PTHREAD_ID = 2,
- LTTNG_UST_CONTEXT_PROCNAME = 3,
- LTTNG_UST_CONTEXT_IP = 4,
- LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER = 5,
- LTTNG_UST_CONTEXT_CPU_ID = 6,
- LTTNG_UST_CONTEXT_APP_CONTEXT = 7,
-};
-
-struct lttng_ust_perf_counter_ctx {
- uint32_t type;
- uint64_t config;
- char name[LTTNG_UST_SYM_NAME_LEN];
-} LTTNG_PACKED;
-
-#define LTTNG_UST_CONTEXT_PADDING1 16
-#define LTTNG_UST_CONTEXT_PADDING2 (LTTNG_UST_SYM_NAME_LEN + 32)
-struct lttng_ust_context {
- enum lttng_ust_context_type ctx;
- char padding[LTTNG_UST_CONTEXT_PADDING1];
-
- union {
- struct lttng_ust_perf_counter_ctx perf_counter;
- struct {
- /* Includes trailing '\0'. */
- uint32_t provider_name_len;
- uint32_t ctx_name_len;
- } app_ctx;
- char padding[LTTNG_UST_CONTEXT_PADDING2];
- } u;
-} LTTNG_PACKED;
-
-/*
- * Tracer channel attributes.
- */
-#define LTTNG_UST_CHANNEL_ATTR_PADDING (LTTNG_UST_SYM_NAME_LEN + 32)
-struct lttng_ust_channel_attr {
- uint64_t subbuf_size; /* bytes, power of 2 */
- uint64_t num_subbuf; /* power of 2 */
- int overwrite; /* 1: overwrite, 0: discard */
- unsigned int switch_timer_interval; /* usec */
- unsigned int read_timer_interval; /* usec */
- enum lttng_ust_output output; /* splice, mmap */
- char padding[LTTNG_UST_CHANNEL_ATTR_PADDING];
-} LTTNG_PACKED;
-
-#define LTTNG_UST_TRACEPOINT_ITER_PADDING 16
-struct lttng_ust_tracepoint_iter {
- char name[LTTNG_UST_SYM_NAME_LEN]; /* provider:name */
- int loglevel;
- char padding[LTTNG_UST_TRACEPOINT_ITER_PADDING];
-} LTTNG_PACKED;
-
-enum lttng_ust_object_type {
- LTTNG_UST_OBJECT_TYPE_UNKNOWN = -1,
- LTTNG_UST_OBJECT_TYPE_CHANNEL = 0,
- LTTNG_UST_OBJECT_TYPE_STREAM = 1,
- LTTNG_UST_OBJECT_TYPE_EVENT = 2,
- LTTNG_UST_OBJECT_TYPE_CONTEXT = 3,
-};
-
-#define LTTNG_UST_OBJECT_DATA_PADDING1 32
-#define LTTNG_UST_OBJECT_DATA_PADDING2 (LTTNG_UST_SYM_NAME_LEN + 32)
-
-struct lttng_ust_object_data {
- enum lttng_ust_object_type type;
- int handle;
- uint64_t size;
- char padding1[LTTNG_UST_OBJECT_DATA_PADDING1];
- union {
- struct {
- void *data;
- enum lttng_ust_chan_type type;
- int wakeup_fd;
- } channel;
- struct {
- int shm_fd;
- int wakeup_fd;
- uint32_t stream_nr;
- } stream;
- char padding2[LTTNG_UST_OBJECT_DATA_PADDING2];
- } u;
-} LTTNG_PACKED;
-
-enum lttng_ust_calibrate_type {
- LTTNG_UST_CALIBRATE_TRACEPOINT,
-};
-
-#define LTTNG_UST_CALIBRATE_PADDING1 16
-#define LTTNG_UST_CALIBRATE_PADDING2 (LTTNG_UST_SYM_NAME_LEN + 32)
-struct lttng_ust_calibrate {
- enum lttng_ust_calibrate_type type; /* type (input) */
- char padding[LTTNG_UST_CALIBRATE_PADDING1];
-
- union {
- char padding[LTTNG_UST_CALIBRATE_PADDING2];
- } u;
-} LTTNG_PACKED;
-
-#define FILTER_BYTECODE_MAX_LEN 65536
-#define LTTNG_UST_FILTER_PADDING 32
-struct lttng_ust_filter_bytecode {
- uint32_t len;
- uint32_t reloc_offset;
- uint64_t seqnum;
- char padding[LTTNG_UST_FILTER_PADDING];
- char data[0];
-} LTTNG_PACKED;
-
-#define LTTNG_UST_EXCLUSION_PADDING 32
-struct lttng_ust_event_exclusion {
- uint32_t count;
- char padding[LTTNG_UST_EXCLUSION_PADDING];
- char names[LTTNG_UST_SYM_NAME_LEN][0];
-} LTTNG_PACKED;
-
-#define _UST_CMD(minor) (minor)
-#define _UST_CMDR(minor, type) (minor)
-#define _UST_CMDW(minor, type) (minor)
-
-/* Handled by object descriptor */
-#define LTTNG_UST_RELEASE _UST_CMD(0x1)
-
-/* Handled by object cmd */
-
-/* LTTng-UST commands */
-#define LTTNG_UST_SESSION _UST_CMD(0x40)
-#define LTTNG_UST_TRACER_VERSION \
- _UST_CMDR(0x41, struct lttng_ust_tracer_version)
-#define LTTNG_UST_TRACEPOINT_LIST _UST_CMD(0x42)
-#define LTTNG_UST_WAIT_QUIESCENT _UST_CMD(0x43)
-#define LTTNG_UST_REGISTER_DONE _UST_CMD(0x44)
-#define LTTNG_UST_TRACEPOINT_FIELD_LIST _UST_CMD(0x45)
-
-/* Session FD commands */
-#define LTTNG_UST_CHANNEL \
- _UST_CMDW(0x51, struct lttng_ust_channel)
-#define LTTNG_UST_SESSION_START _UST_CMD(0x52)
-#define LTTNG_UST_SESSION_STOP _UST_CMD(0x53)
-
-/* Channel FD commands */
-#define LTTNG_UST_STREAM _UST_CMD(0x60)
-#define LTTNG_UST_EVENT \
- _UST_CMDW(0x61, struct lttng_ust_event)
-
-/* Event and Channel FD commands */
-#define LTTNG_UST_CONTEXT \
- _UST_CMDW(0x70, struct lttng_ust_context)
-#define LTTNG_UST_FLUSH_BUFFER \
- _UST_CMD(0x71)
-
-/* Event, Channel and Session commands */
-#define LTTNG_UST_ENABLE _UST_CMD(0x80)
-#define LTTNG_UST_DISABLE _UST_CMD(0x81)
-
-/* Tracepoint list commands */
-#define LTTNG_UST_TRACEPOINT_LIST_GET _UST_CMD(0x90)
-#define LTTNG_UST_TRACEPOINT_FIELD_LIST_GET _UST_CMD(0x91)
-
-/* Event FD commands */
-#define LTTNG_UST_FILTER _UST_CMD(0xA0)
-
-#define LTTNG_UST_ROOT_HANDLE 0
-
-struct lttng_ust_obj;
-
-union ust_args {
- struct {
- void *chan_data;
- int wakeup_fd;
- } channel;
- struct {
- int shm_fd;
- int wakeup_fd;
- } stream;
- struct {
- struct lttng_ust_field_iter entry;
- } field_list;
-};
-
-struct lttng_ust_objd_ops {
- long (*cmd)(int objd, unsigned int cmd, unsigned long arg,
- union ust_args *args, void *owner);
- int (*release)(int objd);
-};
-
-/* Create root handle. Always ID 0. */
-int lttng_abi_create_root_handle(void);