#include <urcu/list.h>
#include <urcu/hlist.h>
#include <stdint.h>
+#include <lttng/ust-config.h>
#include <lttng/ust-abi.h>
#include <lttng/ust-tracer.h>
#include <lttng/ust-endian.h>
#include <float.h>
+#include <errno.h>
+#include <urcu/ref.h>
+#include <pthread.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
#define LTTNG_UST_UUID_LEN 16
+/*
+ * Tracepoint provider version. Compatibility based on the major number.
+ * Older tracepoint providers can always register to newer lttng-ust
+ * library, but the opposite is rejected: a newer tracepoint provider is
+ * rejected by an older lttng-ust library.
+ */
+#define LTTNG_UST_PROVIDER_MAJOR 1
+#define LTTNG_UST_PROVIDER_MINOR 0
+
struct lttng_channel;
struct lttng_session;
struct lttng_ust_lib_ring_buffer_ctx;
+struct lttng_ust_context_app;
+struct lttng_event_field;
/*
* Data structures used by tracepoint event declarations, and by the
LTTNG_CLIENT_METADATA = 0,
LTTNG_CLIENT_DISCARD = 1,
LTTNG_CLIENT_OVERWRITE = 2,
+ LTTNG_CLIENT_DISCARD_RT = 3,
+ LTTNG_CLIENT_OVERWRITE_RT = 4,
LTTNG_NR_CLIENT_TYPES,
};
atype_sequence,
atype_string,
atype_float,
+ atype_dynamic,
+ atype_struct,
NR_ABSTRACT_TYPES,
};
NR_STRING_ENCODINGS,
};
+struct lttng_enum_value {
+ unsigned long long value;
+ unsigned int signedness:1;
+};
+
+enum lttng_enum_entry_options {
+ LTTNG_ENUM_ENTRY_OPTION_IS_AUTO = 1U << 0,
+};
+
#define LTTNG_UST_ENUM_ENTRY_PADDING 16
struct lttng_enum_entry {
- unsigned long long start, end; /* start and end are inclusive */
+ struct lttng_enum_value start, end; /* start and end are inclusive */
const char *string;
- char padding[LTTNG_UST_ENUM_ENTRY_PADDING];
+ union {
+ struct {
+ unsigned int options;
+ } LTTNG_PACKED extra;
+ char padding[LTTNG_UST_ENUM_ENTRY_PADDING];
+ } u;
};
#define __type_integer(_type, _byte_order, _base, _encoding) \
{ \
- .atype = atype_integer, \
- .u.basic.integer = \
+ .atype = atype_integer, \
+ .u = \
{ \
- .size = sizeof(_type) * CHAR_BIT, \
- .alignment = lttng_alignof(_type) * CHAR_BIT, \
- .signedness = lttng_is_signed_type(_type), \
- .reverse_byte_order = _byte_order != BYTE_ORDER, \
- .base = _base, \
- .encoding = lttng_encode_##_encoding, \
+ .basic = \
+ { \
+ .integer = \
+ { \
+ .size = sizeof(_type) * CHAR_BIT, \
+ .alignment = lttng_alignof(_type) * CHAR_BIT, \
+ .signedness = lttng_is_signed_type(_type), \
+ .reverse_byte_order = _byte_order != BYTE_ORDER, \
+ .base = _base, \
+ .encoding = lttng_encode_##_encoding, \
+ } \
+ } \
}, \
} \
#define __type_float(_type) \
{ \
- .atype = atype_float, \
- .u.basic._float = \
+ .atype = atype_float, \
+ .u = \
{ \
- .exp_dig = sizeof(_type) * CHAR_BIT \
- - _float_mant_dig(_type), \
- .mant_dig = _float_mant_dig(_type), \
- .alignment = lttng_alignof(_type) * CHAR_BIT, \
- .reverse_byte_order = BYTE_ORDER != FLOAT_WORD_ORDER, \
+ .basic = \
+ { \
+ ._float = \
+ { \
+ .exp_dig = sizeof(_type) * CHAR_BIT \
+ - _float_mant_dig(_type), \
+ .mant_dig = _float_mant_dig(_type), \
+ .alignment = lttng_alignof(_type) * CHAR_BIT, \
+ .reverse_byte_order = BYTE_ORDER != FLOAT_WORD_ORDER, \
+ } \
+ } \
}, \
} \
union _lttng_basic_type {
struct lttng_integer_type integer;
struct {
- const char *name;
+ const struct lttng_enum_desc *desc; /* Enumeration mapping */
+ struct lttng_integer_type container_type;
} enumeration;
struct {
enum lttng_string_encodings encoding;
struct lttng_basic_type length_type;
struct lttng_basic_type elem_type;
} sequence;
+ struct {
+ uint32_t nr_fields;
+ struct lttng_event_field *fields; /* Array of fields. */
+ } _struct;
char padding[LTTNG_UST_TYPE_PADDING];
} u;
};
#define LTTNG_UST_ENUM_TYPE_PADDING 24
-struct lttng_enum {
+struct lttng_enum_desc {
const char *name;
- struct lttng_type container_type;
const struct lttng_enum_entry *entries;
- unsigned int len;
+ unsigned int nr_entries;
char padding[LTTNG_UST_ENUM_TYPE_PADDING];
};
char padding[LTTNG_UST_EVENT_FIELD_PADDING];
};
+enum lttng_ust_dynamic_type {
+ LTTNG_UST_DYNAMIC_TYPE_NONE,
+ LTTNG_UST_DYNAMIC_TYPE_S8,
+ LTTNG_UST_DYNAMIC_TYPE_S16,
+ LTTNG_UST_DYNAMIC_TYPE_S32,
+ LTTNG_UST_DYNAMIC_TYPE_S64,
+ LTTNG_UST_DYNAMIC_TYPE_U8,
+ LTTNG_UST_DYNAMIC_TYPE_U16,
+ LTTNG_UST_DYNAMIC_TYPE_U32,
+ LTTNG_UST_DYNAMIC_TYPE_U64,
+ LTTNG_UST_DYNAMIC_TYPE_FLOAT,
+ LTTNG_UST_DYNAMIC_TYPE_DOUBLE,
+ LTTNG_UST_DYNAMIC_TYPE_STRING,
+ _NR_LTTNG_UST_DYNAMIC_TYPES,
+};
+
+struct lttng_ctx_value {
+ enum lttng_ust_dynamic_type sel;
+ union {
+ int64_t s64;
+ const char *str;
+ double d;
+ } u;
+};
+
+struct lttng_perf_counter_field;
+
#define LTTNG_UST_CTX_FIELD_PADDING 40
struct lttng_ctx_field {
struct lttng_event_field event_field;
- size_t (*get_size)(size_t offset);
+ size_t (*get_size)(struct lttng_ctx_field *field, size_t offset);
void (*record)(struct lttng_ctx_field *field,
struct lttng_ust_lib_ring_buffer_ctx *ctx,
struct lttng_channel *chan);
+ void (*get_value)(struct lttng_ctx_field *field,
+ struct lttng_ctx_value *value);
union {
+ struct lttng_perf_counter_field *perf_counter;
char padding[LTTNG_UST_CTX_FIELD_PADDING];
} u;
void (*destroy)(struct lttng_ctx_field *field);
+ char *field_name; /* Has ownership, dynamically allocated. */
};
-#define LTTNG_UST_CTX_PADDING 24
+#define LTTNG_UST_CTX_PADDING 20
struct lttng_ctx {
struct lttng_ctx_field *fields;
unsigned int nr_fields;
unsigned int allocated_fields;
+ unsigned int largest_align;
char padding[LTTNG_UST_CTX_PADDING];
};
} u;
};
-#define LTTNG_UST_PROBE_DESC_PADDING 40
+#define LTTNG_UST_PROBE_DESC_PADDING 12
struct lttng_probe_desc {
const char *provider;
const struct lttng_event_desc **event_desc;
unsigned int nr_events;
struct cds_list_head head; /* chain registered probes */
+ struct cds_list_head lazy_init_head;
+ int lazy; /* lazy registration */
+ uint32_t major;
+ uint32_t minor;
char padding[LTTNG_UST_PROBE_DESC_PADDING];
};
/* Data structures used by the tracer. */
enum lttng_enabler_type {
- LTTNG_ENABLER_WILDCARD,
+ LTTNG_ENABLER_STAR_GLOB,
LTTNG_ENABLER_EVENT,
};
/* head list of struct lttng_ust_filter_bytecode_node */
struct cds_list_head filter_bytecode_head;
+ /* head list of struct lttng_ust_excluder_node */
+ struct cds_list_head excluder_head;
struct cds_list_head node; /* per-session list of enablers */
struct lttng_ust_event event_param;
struct lttng_ust_filter_bytecode bc;
};
+struct lttng_ust_excluder_node {
+ struct cds_list_head node;
+ struct lttng_enabler *enabler;
+ /*
+ * struct lttng_ust_event_exclusion had variable sized array,
+ * must be last field.
+ */
+ struct lttng_ust_event_exclusion excluder;
+};
/*
* Filter return value masks.
*/
uint64_t (*filter)(void *filter_data, const char *filter_stack_data);
int link_failed;
struct cds_list_head node; /* list of bytecode runtime in event */
+ struct lttng_session *session;
};
/*
void *_deprecated1;
struct lttng_ctx *ctx;
enum lttng_ust_instrumentation instrumentation;
- union {
- } u;
struct cds_list_head node; /* Event list in session */
struct cds_list_head _deprecated2;
void *_deprecated3;
- unsigned int metadata_dumped:1;
+ unsigned int _deprecated4:1;
/* LTTng-UST 2.1 starts here */
/* list of struct lttng_bytecode_runtime, sorted by seqnum */
/* Backward references: list of lttng_enabler_ref (ref to enablers) */
struct cds_list_head enablers_ref_head;
struct cds_hlist_node hlist; /* session ht of events */
+ int registered; /* has reg'd tracepoint probe */
+};
+
+struct lttng_enum {
+ const struct lttng_enum_desc *desc;
+ struct lttng_session *session;
+ struct cds_list_head node; /* Enum list in session */
+ struct cds_hlist_node hlist; /* Session ht of enums */
+ uint64_t id; /* Enumeration ID in sessiond */
};
struct channel;
*/
struct lttng_channel_ops {
struct lttng_channel *(*channel_create)(const char *name,
- 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,
- struct lttng_channel *chan_priv_init);
- void (*channel_destroy)(struct lttng_channel *lttng_chan);
- struct lttng_ust_lib_ring_buffer *(*buffer_read_open)(struct channel *chan,
- struct lttng_ust_shm_handle *handle,
- int **shm_fd, int **wait_fd,
- uint64_t **memory_map_size);
- void (*buffer_read_close)(struct lttng_ust_lib_ring_buffer *buf,
- struct lttng_ust_shm_handle *handle);
+ void *buf_addr,
+ size_t subbuf_size, size_t num_subbuf,
+ unsigned int switch_timer_interval,
+ unsigned int read_timer_interval,
+ unsigned char *uuid,
+ uint32_t chan_id,
+ const int *stream_fds, int nr_stream_fds,
+ int64_t blocking_timeout);
+ void (*channel_destroy)(struct lttng_channel *chan);
+ union {
+ void *_deprecated1;
+ unsigned long has_strcpy:1; /* ABI has strcpy */
+ } u;
+ void *_deprecated2;
int (*event_reserve)(struct lttng_ust_lib_ring_buffer_ctx *ctx,
uint32_t event_id);
void (*event_commit)(struct lttng_ust_lib_ring_buffer_ctx *ctx);
- void (*event_write)(struct lttng_ust_lib_ring_buffer_ctx *ctx, const void *src,
- size_t len);
+ void (*event_write)(struct lttng_ust_lib_ring_buffer_ctx *ctx,
+ const void *src, size_t len);
/*
* packet_avail_size returns the available size in the current
* packet. Note that the size returned is only a hint, since it
int (*is_finalized)(struct channel *chan);
int (*is_disabled)(struct channel *chan);
int (*flush_buffer)(struct channel *chan, struct lttng_ust_shm_handle *handle);
+ void (*event_strcpy)(struct lttng_ust_lib_ring_buffer_ctx *ctx,
+ const char *src, size_t len);
};
/*
/* Event ID management */
struct lttng_session *session;
int objd; /* Object associated to channel */
- unsigned int free_event_id; /* Next event ID to allocate */
- unsigned int used_event_id; /* Max allocated event IDs */
+ unsigned int _deprecated1;
+ unsigned int _deprecated2;
struct cds_list_head node; /* Channel list in session */
- struct lttng_channel_ops *ops;
+ const struct lttng_channel_ops *ops;
int header_type; /* 0: unset, 1: compact, 2: large */
struct lttng_ust_shm_handle *handle; /* shared-memory handle */
- unsigned int metadata_dumped:1;
+ unsigned int _deprecated3:1;
- /* Channel ID, available for consumer too */
+ /* Channel ID */
unsigned int id;
- /* Copy of session UUID for consumer (availability through shm) */
+ enum lttng_ust_chan_type type;
unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */
+ int tstate:1; /* Transient enable state */
+};
+
+#define LTTNG_UST_STACK_CTX_PADDING 32
+struct lttng_stack_ctx {
+ struct lttng_event *event;
+ struct lttng_ctx *chan_ctx; /* RCU dereferenced. */
+ struct lttng_ctx *event_ctx; /* RCU dereferenced. */
+ char padding[LTTNG_UST_STACK_CTX_PADDING];
};
-#define LTTNG_UST_EVENT_HT_BITS 6
+#define LTTNG_UST_EVENT_HT_BITS 12
#define LTTNG_UST_EVENT_HT_SIZE (1U << LTTNG_UST_EVENT_HT_BITS)
struct lttng_ust_event_ht {
struct cds_hlist_head table[LTTNG_UST_EVENT_HT_SIZE];
};
+#define LTTNG_UST_ENUM_HT_BITS 12
+#define LTTNG_UST_ENUM_HT_SIZE (1U << LTTNG_UST_ENUM_HT_BITS)
+
+struct lttng_ust_enum_ht {
+ struct cds_hlist_head table[LTTNG_UST_ENUM_HT_SIZE];
+};
+
/*
* IMPORTANT: this structure is part of the ABI between the probe and
* UST. Fields need to be only added at the end, never reordered, never
int active; /* Is trace session active ? */
int been_active; /* Been active ? */
int objd; /* Object associated */
- struct lttng_channel *metadata; /* Metadata channel */
+ void *_deprecated1;
struct cds_list_head chan_head; /* Channel list head */
struct cds_list_head events_head; /* list of events */
- struct cds_list_head _deprecated1;
+ struct cds_list_head _deprecated2;
struct cds_list_head node; /* Session list */
- unsigned int free_chan_id; /* Next chan ID to allocate */
- unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */
- unsigned int metadata_dumped:1;
+ int _deprecated3;
+ unsigned int _deprecated4:1;
/* New UST 2.1 */
/* List of enablers */
struct cds_list_head enablers_head;
struct lttng_ust_event_ht events_ht; /* ht of events */
+ void *owner; /* object owner */
+ int tstate:1; /* Transient enable state */
+
+ /* New UST 2.4 */
+ int statedump_pending:1;
+
+ /* New UST 2.8 */
+ struct lttng_ust_enum_ht enums_ht; /* ht of enumerations */
+ struct cds_list_head enums_head;
+ struct lttng_ctx *ctx; /* contexts for filters. */
};
struct lttng_transport {
char *name;
struct cds_list_head node;
struct lttng_channel_ops ops;
+ const struct lttng_ust_lib_ring_buffer_config *client_config;
};
struct lttng_session *lttng_session_create(void);
int lttng_session_enable(struct lttng_session *session);
int lttng_session_disable(struct lttng_session *session);
+int lttng_session_statedump(struct lttng_session *session);
void lttng_session_destroy(struct lttng_session *session);
struct lttng_channel *lttng_channel_create(struct lttng_session *session,
int **shm_fd, int **wait_fd,
uint64_t **memory_map_size,
struct lttng_channel *chan_priv_init);
-struct lttng_channel *lttng_global_channel_create(struct lttng_session *session,
- int overwrite, 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 lttng_channel_enable(struct lttng_channel *channel);
int lttng_channel_disable(struct lttng_channel *channel);
struct lttng_ust_filter_bytecode_node *bytecode);
int lttng_enabler_attach_context(struct lttng_enabler *enabler,
struct lttng_ust_context *ctx);
+int lttng_enabler_attach_exclusion(struct lttng_enabler *enabler,
+ struct lttng_ust_excluder_node *excluder);
int lttng_attach_context(struct lttng_ust_context *context_param,
+ union ust_args *uargs,
struct lttng_ctx **ctx, struct lttng_session *session);
+int lttng_session_context_init(struct lttng_ctx **ctx);
void lttng_transport_register(struct lttng_transport *transport);
void lttng_transport_unregister(struct lttng_transport *transport);
int lttng_probe_register(struct lttng_probe_desc *desc);
void lttng_probe_unregister(struct lttng_probe_desc *desc);
-int lttng_fix_pending_event_desc(const struct lttng_event_desc *desc);
-const struct lttng_event_desc *lttng_event_get(const char *name);
-void lttng_event_put(const struct lttng_event_desc *desc);
+void lttng_probe_provider_unregister_events(struct lttng_probe_desc *desc);
+int lttng_fix_pending_events(void);
int lttng_probes_init(void);
void lttng_probes_exit(void);
int lttng_find_context(struct lttng_ctx *ctx, const char *name);
+int lttng_get_context_index(struct lttng_ctx *ctx, const char *name);
struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx_p);
+void lttng_context_update(struct lttng_ctx *ctx);
void lttng_remove_context_field(struct lttng_ctx **ctx_p,
struct lttng_ctx_field *field);
void lttng_destroy_context(struct lttng_ctx *ctx);
int lttng_add_vpid_to_ctx(struct lttng_ctx **ctx);
int lttng_add_pthread_id_to_ctx(struct lttng_ctx **ctx);
int lttng_add_procname_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_ip_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_cpu_id_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_dyntest_to_ctx(struct lttng_ctx **ctx);
void lttng_context_vtid_reset(void);
void lttng_context_vpid_reset(void);
-extern const struct lttng_ust_lib_ring_buffer_client_cb *lttng_client_callbacks_metadata;
-extern const struct lttng_ust_lib_ring_buffer_client_cb *lttng_client_callbacks_discard;
-extern const struct lttng_ust_lib_ring_buffer_client_cb *lttng_client_callbacks_overwrite;
+#ifdef LTTNG_UST_HAVE_PERF_EVENT
+int lttng_add_perf_counter_to_ctx(uint32_t type,
+ uint64_t config,
+ const char *name,
+ struct lttng_ctx **ctx);
+int lttng_perf_counter_init(void);
+void lttng_perf_counter_exit(void);
+#else /* #ifdef LTTNG_UST_HAVE_PERF_EVENT */
+static inline
+int lttng_add_perf_counter_to_ctx(uint32_t type,
+ uint64_t config,
+ const char *name,
+ struct lttng_ctx **ctx)
+{
+ return -ENOSYS;
+}
+static inline
+int lttng_perf_counter_init(void)
+{
+ return 0;
+}
+static inline
+void lttng_perf_counter_exit(void)
+{
+}
+#endif /* #else #ifdef LTTNG_UST_HAVE_PERF_EVENT */
+
+extern const struct lttng_ust_client_lib_ring_buffer_client_cb *lttng_client_callbacks_metadata;
+extern const struct lttng_ust_client_lib_ring_buffer_client_cb *lttng_client_callbacks_discard;
+extern const struct lttng_ust_client_lib_ring_buffer_client_cb *lttng_client_callbacks_overwrite;
struct lttng_transport *lttng_transport_find(const char *name);
void lttng_filter_sync_state(struct lttng_bytecode_runtime *runtime);
struct cds_list_head *lttng_get_probe_list_head(void);
+int lttng_session_active(void);
+
+typedef int (*t_statedump_func_ptr)(struct lttng_session *session);
+void lttng_handle_pending_statedump(void *owner);
+struct cds_list_head *_lttng_get_sessions(void);
+struct lttng_enum *lttng_ust_enum_get(struct lttng_session *session,
+ const char *enum_name);
+
+void lttng_ust_dl_update(void *ip);
+void lttng_ust_fixup_fd_tracker_tls(void);
+
+/* For backward compatibility. Leave those exported symbols in place. */
+extern struct lttng_ctx *lttng_static_ctx;
+void lttng_context_init(void);
+void lttng_context_exit(void);
+
+#ifdef __cplusplus
+}
+#endif
#endif /* _LTTNG_UST_EVENTS_H */
projects / lttng-ust.git / blobdiff