clock.h \
dynamic-type.h \
elf.h \
+ events.h \
logging.h \
macros.h \
patient.h \
--- /dev/null
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright 2019 (c) Francis Deslauriers <francis.deslauriers@efficios.com>
+ */
+
+#ifndef _UST_COMMON_UST_EVENTS_H
+#define _UST_COMMON_UST_EVENTS_H
+
+#include <limits.h>
+#include <stdint.h>
+
+#include <urcu/list.h>
+#include <urcu/hlist.h>
+
+#include <lttng/ust-events.h>
+
+#include "common/macros.h"
+#include "common/ust-context-provider.h"
+
+struct lttng_ust_abi_obj;
+struct lttng_event_notifier_group;
+
+union lttng_ust_abi_args {
+ struct {
+ void *chan_data;
+ int wakeup_fd;
+ } channel;
+ struct {
+ int shm_fd;
+ int wakeup_fd;
+ } stream;
+ struct {
+ struct lttng_ust_abi_field_iter entry;
+ } field_list;
+ struct {
+ char *ctxname;
+ } app_context;
+ struct {
+ int event_notifier_notif_fd;
+ } event_notifier_handle;
+ struct {
+ void *counter_data;
+ } counter;
+ struct {
+ int shm_fd;
+ } counter_shm;
+};
+
+struct lttng_ust_abi_objd_ops {
+ long (*cmd)(int objd, unsigned int cmd, unsigned long arg,
+ union lttng_ust_abi_args *args, void *owner);
+ int (*release)(int objd);
+};
+
+enum lttng_enabler_format_type {
+ LTTNG_ENABLER_FORMAT_STAR_GLOB,
+ LTTNG_ENABLER_FORMAT_EVENT,
+};
+
+/*
+ * Enabler field, within whatever object is enabling an event. Target of
+ * backward reference.
+ */
+struct lttng_enabler {
+ enum lttng_enabler_format_type format_type;
+
+ /* 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 lttng_ust_abi_event event_param;
+ unsigned int enabled:1;
+};
+
+struct lttng_event_enabler {
+ struct lttng_enabler base;
+ struct cds_list_head node; /* per-session list of enablers */
+ struct lttng_ust_channel_buffer *chan;
+ /*
+ * Unused, but kept around to make it explicit that the tracer can do
+ * it.
+ */
+ struct lttng_ust_ctx *ctx;
+};
+
+struct lttng_event_notifier_enabler {
+ struct lttng_enabler base;
+ uint64_t error_counter_index;
+ struct cds_list_head node; /* per-app list of event_notifier enablers */
+ struct cds_list_head capture_bytecode_head;
+ struct lttng_event_notifier_group *group; /* weak ref */
+ uint64_t user_token; /* User-provided token */
+ uint64_t num_captures;
+};
+
+enum lttng_ust_bytecode_type {
+ LTTNG_UST_BYTECODE_TYPE_FILTER,
+ LTTNG_UST_BYTECODE_TYPE_CAPTURE,
+};
+
+struct lttng_ust_bytecode_node {
+ enum lttng_ust_bytecode_type type;
+ struct cds_list_head node;
+ struct lttng_enabler *enabler;
+ struct {
+ uint32_t len;
+ uint32_t reloc_offset;
+ uint64_t seqnum;
+ char data[];
+ } bc;
+};
+
+/*
+ * Bytecode interpreter return value.
+ */
+enum lttng_ust_bytecode_interpreter_ret {
+ LTTNG_UST_BYTECODE_INTERPRETER_ERROR = -1,
+ LTTNG_UST_BYTECODE_INTERPRETER_OK = 0,
+};
+
+struct lttng_interpreter_output;
+struct lttng_ust_bytecode_runtime_private;
+
+enum lttng_ust_bytecode_filter_result {
+ LTTNG_UST_BYTECODE_FILTER_ACCEPT = 0,
+ LTTNG_UST_BYTECODE_FILTER_REJECT = 1,
+};
+
+struct lttng_ust_bytecode_filter_ctx {
+ enum lttng_ust_bytecode_filter_result result;
+};
+
+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_abi_event_exclusion excluder;
+};
+
+/* Data structures used by the tracer. */
+
+struct tp_list_entry {
+ struct lttng_ust_abi_tracepoint_iter tp;
+ struct cds_list_head head;
+};
+
+struct lttng_ust_tracepoint_list {
+ struct tp_list_entry *iter;
+ struct cds_list_head head;
+};
+
+struct tp_field_list_entry {
+ struct lttng_ust_abi_field_iter field;
+ struct cds_list_head head;
+};
+
+struct lttng_ust_field_list {
+ struct tp_field_list_entry *iter;
+ struct cds_list_head head;
+};
+
+/*
+ * Objects in a linked-list of enablers, owned by an event or event_notifier.
+ * This is used because an event (or a event_notifier) can be enabled by more
+ * than one enabler and we want a quick way to iterate over all enablers of an
+ * object.
+ *
+ * For example, event rules "my_app:a*" and "my_app:ab*" will both match the
+ * event with the name "my_app:abc".
+ */
+struct lttng_enabler_ref {
+ struct cds_list_head node; /* enabler ref list */
+ struct lttng_enabler *ref; /* backward ref */
+};
+
+#define LTTNG_COUNTER_DIMENSION_MAX 8
+struct lttng_counter_dimension {
+ uint64_t size;
+ uint64_t underflow_index;
+ uint64_t overflow_index;
+ uint8_t has_underflow;
+ uint8_t has_overflow;
+};
+
+struct lttng_counter_ops {
+ struct lib_counter *(*counter_create)(size_t nr_dimensions,
+ const struct lttng_counter_dimension *dimensions,
+ int64_t global_sum_step,
+ int global_counter_fd,
+ int nr_counter_cpu_fds,
+ const int *counter_cpu_fds,
+ bool is_daemon);
+ void (*counter_destroy)(struct lib_counter *counter);
+ int (*counter_add)(struct lib_counter *counter,
+ const size_t *dimension_indexes, int64_t v);
+ int (*counter_read)(struct lib_counter *counter,
+ const size_t *dimension_indexes, int cpu,
+ int64_t *value, bool *overflow, bool *underflow);
+ int (*counter_aggregate)(struct lib_counter *counter,
+ const size_t *dimension_indexes, int64_t *value,
+ bool *overflow, bool *underflow);
+ int (*counter_clear)(struct lib_counter *counter, const size_t *dimension_indexes);
+};
+
+struct lttng_counter {
+ int objd;
+ struct lttng_event_notifier_group *event_notifier_group; /* owner */
+ struct lttng_counter_transport *transport;
+ struct lib_counter *counter;
+ struct lttng_counter_ops *ops;
+};
+
+#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_EVENT_NOTIFIER_HT_BITS 12
+#define LTTNG_UST_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_UST_EVENT_NOTIFIER_HT_BITS)
+struct lttng_ust_event_notifier_ht {
+ struct cds_hlist_head table[LTTNG_UST_EVENT_NOTIFIER_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];
+};
+
+struct lttng_event_notifier_group {
+ int objd;
+ void *owner;
+ int notification_fd;
+ struct cds_list_head node; /* Event notifier group handle list */
+ struct cds_list_head enablers_head;
+ struct cds_list_head event_notifiers_head; /* list of event_notifiers */
+ struct lttng_ust_event_notifier_ht event_notifiers_ht; /* hashtable of event_notifiers */
+ struct lttng_ust_ctx *ctx; /* contexts for filters. */
+
+ struct lttng_counter *error_counter;
+ size_t error_counter_len;
+};
+
+struct lttng_transport {
+ const char *name;
+ struct cds_list_head node;
+ struct lttng_ust_channel_buffer_ops ops;
+ const struct lttng_ust_lib_ring_buffer_config *client_config;
+};
+
+struct lttng_counter_transport {
+ const char *name;
+ struct cds_list_head node;
+ struct lttng_counter_ops ops;
+ const struct lib_counter_config *client_config;
+};
+
+struct lttng_ust_event_common_private {
+ struct lttng_ust_event_common *pub; /* Public event interface */
+
+ const struct lttng_ust_event_desc *desc;
+ /* Backward references: list of lttng_enabler_ref (ref to enablers) */
+ struct cds_list_head enablers_ref_head;
+ int registered; /* has reg'd tracepoint probe */
+ uint64_t user_token;
+
+ int has_enablers_without_filter_bytecode;
+ /* list of struct lttng_ust_bytecode_runtime, sorted by seqnum */
+ struct cds_list_head filter_bytecode_runtime_head;
+};
+
+struct lttng_ust_event_recorder_private {
+ struct lttng_ust_event_common_private parent;
+
+ struct lttng_ust_event_recorder *pub; /* Public event interface */
+ struct cds_list_head node; /* Event recorder list */
+ struct cds_hlist_node hlist; /* Hash table of event recorders */
+ struct lttng_ust_ctx *ctx;
+ unsigned int id;
+};
+
+struct lttng_ust_event_notifier_private {
+ struct lttng_ust_event_common_private parent;
+
+ struct lttng_ust_event_notifier *pub; /* Public event notifier interface */
+ struct lttng_event_notifier_group *group; /* weak ref */
+ size_t num_captures; /* Needed to allocate the msgpack array. */
+ uint64_t error_counter_index;
+ struct cds_list_head node; /* Event notifier list */
+ struct cds_hlist_node hlist; /* Hash table of event notifiers */
+ struct cds_list_head capture_bytecode_runtime_head;
+};
+
+struct lttng_ust_bytecode_runtime {
+ enum lttng_ust_bytecode_type type;
+ struct lttng_ust_bytecode_node *bc;
+ int link_failed;
+ int (*interpreter_func)(struct lttng_ust_bytecode_runtime *bytecode_runtime,
+ const char *interpreter_stack_data,
+ void *ctx);
+ struct cds_list_head node; /* list of bytecode runtime in event */
+ /*
+ * Pointer to a URCU-protected pointer owned by an `struct
+ * lttng_session`or `struct lttng_event_notifier_group`.
+ */
+ struct lttng_ust_ctx **pctx;
+};
+
+struct lttng_ust_session_private {
+ struct lttng_ust_session *pub; /* Public session interface */
+
+ int been_active; /* Been active ? */
+ int objd; /* Object associated */
+ struct cds_list_head chan_head; /* Channel list head */
+ struct cds_list_head events_head; /* list of events */
+ struct cds_list_head node; /* Session list */
+
+ /* 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 */
+
+ int statedump_pending:1;
+
+ struct lttng_ust_enum_ht enums_ht; /* ht of enumerations */
+ struct cds_list_head enums_head;
+ struct lttng_ust_ctx *ctx; /* contexts for filters. */
+
+ unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */
+ bool uuid_set; /* Is uuid set ? */
+};
+
+struct lttng_enum {
+ const struct lttng_ust_enum_desc *desc;
+ struct lttng_ust_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 lttng_ust_shm_handle;
+
+struct lttng_ust_channel_buffer_ops_private {
+ struct lttng_ust_channel_buffer_ops *pub; /* Public channel buffer ops interface */
+
+ struct lttng_ust_channel_buffer *(*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,
+ unsigned char *uuid,
+ uint32_t chan_id,
+ const int *stream_fds, int nr_stream_fds,
+ int64_t blocking_timeout);
+ void (*channel_destroy)(struct lttng_ust_channel_buffer *chan);
+ /*
+ * packet_avail_size returns the available size in the current
+ * packet. Note that the size returned is only a hint, since it
+ * may change due to concurrent writes.
+ */
+ size_t (*packet_avail_size)(struct lttng_ust_channel_buffer *chan);
+ int (*is_finalized)(struct lttng_ust_channel_buffer *chan);
+ int (*is_disabled)(struct lttng_ust_channel_buffer *chan);
+ int (*flush_buffer)(struct lttng_ust_channel_buffer *chan);
+};
+
+struct lttng_ust_channel_common_private {
+ struct lttng_ust_channel_common *pub; /* Public channel interface */
+
+ int objd; /* Object associated with channel. */
+ int tstate:1; /* Transient enable state */
+};
+
+struct lttng_ust_channel_buffer_private {
+ struct lttng_ust_channel_common_private parent;
+
+ struct lttng_ust_channel_buffer *pub; /* Public channel buffer interface */
+ struct cds_list_head node; /* Channel list in session */
+ int header_type; /* 0: unset, 1: compact, 2: large */
+ unsigned int id; /* Channel ID */
+ enum lttng_ust_abi_chan_type type;
+ struct lttng_ust_ctx *ctx;
+ struct lttng_ust_lib_ring_buffer_channel *rb_chan; /* Ring buffer channel */
+ unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */
+};
+
+/*
+ * IMPORTANT: this structure is part of the ABI between the consumer
+ * daemon and the UST library within traced applications. Changing it
+ * breaks the UST communication protocol.
+ *
+ * TODO: remove unused fields on next UST communication protocol
+ * breaking update.
+ */
+struct lttng_ust_abi_channel_config {
+ void *unused1;
+ int unused2;
+ void *unused3;
+ void *unused4;
+ int unused5;
+ struct cds_list_head unused6;
+ void *unused7;
+ int unused8;
+ void *unused9;
+
+ /* Channel ID */
+ unsigned int id;
+ enum lttng_ust_abi_chan_type unused10;
+ unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */
+ int unused11:1;
+};
+
+/* Global (filter), event and channel contexts. */
+struct lttng_ust_ctx {
+ struct lttng_ust_ctx_field *fields;
+ unsigned int nr_fields;
+ unsigned int allocated_fields;
+ unsigned int largest_align;
+};
+
+struct lttng_ust_registered_probe {
+ const struct lttng_ust_probe_desc *desc;
+
+ struct cds_list_head head; /* chain registered probes */
+ struct cds_list_head lazy_init_head;
+ int lazy; /* lazy registration */
+};
+
+/*
+ * Context field
+ */
+
+struct lttng_ust_ctx_field {
+ const struct lttng_ust_event_field *event_field;
+ size_t (*get_size)(void *priv, size_t offset);
+ void (*record)(void *priv, struct lttng_ust_lib_ring_buffer_ctx *ctx,
+ struct lttng_ust_channel_buffer *chan);
+ void (*get_value)(void *priv, struct lttng_ust_ctx_value *value);
+ void (*destroy)(void *priv);
+ void *priv;
+};
+
+static inline
+const struct lttng_ust_type_integer *lttng_ust_get_type_integer(const struct lttng_ust_type_common *type)
+{
+ if (type->type != lttng_ust_type_integer)
+ return NULL;
+ return caa_container_of(type, const struct lttng_ust_type_integer, parent);
+}
+
+static inline
+const struct lttng_ust_type_float *lttng_ust_get_type_float(const struct lttng_ust_type_common *type)
+{
+ if (type->type != lttng_ust_type_float)
+ return NULL;
+ return caa_container_of(type, const struct lttng_ust_type_float, parent);
+}
+
+static inline
+const struct lttng_ust_type_string *lttng_ust_get_type_string(const struct lttng_ust_type_common *type)
+{
+ if (type->type != lttng_ust_type_string)
+ return NULL;
+ return caa_container_of(type, const struct lttng_ust_type_string, parent);
+}
+
+static inline
+const struct lttng_ust_type_enum *lttng_ust_get_type_enum(const struct lttng_ust_type_common *type)
+{
+ if (type->type != lttng_ust_type_enum)
+ return NULL;
+ return caa_container_of(type, const struct lttng_ust_type_enum, parent);
+}
+
+static inline
+const struct lttng_ust_type_array *lttng_ust_get_type_array(const struct lttng_ust_type_common *type)
+{
+ if (type->type != lttng_ust_type_array)
+ return NULL;
+ return caa_container_of(type, const struct lttng_ust_type_array, parent);
+}
+
+static inline
+const struct lttng_ust_type_sequence *lttng_ust_get_type_sequence(const struct lttng_ust_type_common *type)
+{
+ if (type->type != lttng_ust_type_sequence)
+ return NULL;
+ return caa_container_of(type, const struct lttng_ust_type_sequence, parent);
+}
+
+static inline
+const struct lttng_ust_type_struct *lttng_ust_get_type_struct(const struct lttng_ust_type_common *type)
+{
+ if (type->type != lttng_ust_type_struct)
+ return NULL;
+ return caa_container_of(type, const struct lttng_ust_type_struct, parent);
+}
+
+#define lttng_ust_static_type_integer(_size, _alignment, _signedness, _byte_order, _base) \
+ ((const struct lttng_ust_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_type_integer, { \
+ .parent = { \
+ .type = lttng_ust_type_integer, \
+ }, \
+ .struct_size = sizeof(struct lttng_ust_type_integer), \
+ .size = (_size), \
+ .alignment = (_alignment), \
+ .signedness = (_signedness), \
+ .reverse_byte_order = (_byte_order) != BYTE_ORDER, \
+ .base = (_base), \
+ }))
+
+#define lttng_ust_static_type_array_text(_length) \
+ ((const struct lttng_ust_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_type_array, { \
+ .parent = { \
+ .type = lttng_ust_type_array, \
+ }, \
+ .struct_size = sizeof(struct lttng_ust_type_array), \
+ .length = (_length), \
+ .alignment = 0, \
+ .encoding = lttng_ust_string_encoding_UTF8, \
+ .elem_type = lttng_ust_static_type_integer(sizeof(char) * CHAR_BIT, \
+ lttng_ust_rb_alignof(char) * CHAR_BIT, lttng_ust_is_signed_type(char), \
+ BYTE_ORDER, 10), \
+ }))
+
+#define lttng_ust_static_event_field(_name, _type, _nowrite, _nofilter) \
+ __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_event_field, { \
+ .struct_size = sizeof(struct lttng_ust_event_field), \
+ .name = (_name), \
+ .type = (_type), \
+ .nowrite = (_nowrite), \
+ .nofilter = (_nofilter), \
+ })
+
+#define lttng_ust_static_ctx_field(_event_field, _get_size, _record, _get_value, _destroy, _priv) \
+ __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_ctx_field, { \
+ .event_field = (_event_field), \
+ .get_size = (_get_size), \
+ .record = (_record), \
+ .get_value = (_get_value), \
+ .destroy = (_destroy), \
+ .priv = (_priv), \
+ })
+
+static inline
+struct lttng_enabler *lttng_event_enabler_as_enabler(
+ struct lttng_event_enabler *event_enabler)
+{
+ return &event_enabler->base;
+}
+
+static inline
+struct lttng_enabler *lttng_event_notifier_enabler_as_enabler(
+ struct lttng_event_notifier_enabler *event_notifier_enabler)
+{
+ return &event_notifier_enabler->base;
+}
+
+
+
+/* This is ABI between liblttng-ust and liblttng-ust-ctl */
+struct lttng_transport *lttng_ust_transport_find(const char *name);
+
+/* This is ABI between liblttng-ust and liblttng-ust-dl */
+void lttng_ust_dl_update(void *ip);
+
+struct lttng_enum *lttng_ust_enum_get_from_desc(struct lttng_ust_session *session,
+ const struct lttng_ust_enum_desc *enum_desc)
+ __attribute__((visibility("hidden")));
+
+
+#endif /* _UST_COMMON_UST_EVENTS_H */
#include "common/dynamic-type.h"
#include "common/logging.h"
-#include "lib/lttng-ust/ust-events-internal.h"
+#include "common/events.h"
#include "common/compat/pthread.h"
#define USTCOMM_CODE_OFFSET(code) \
#include "common/ringbuffer/backend.h"
#include "common/ringbuffer/frontend.h"
-#include "lib/lttng-ust/ust-events-internal.h"
+#include "common/events.h"
#include "common/wait.h"
#include "lib/lttng-ust/lttng-rb-clients.h"
#include "common/clock.h"
#include <lttng/ust-events.h>
#include "common/macros.h"
#include "common/logging.h"
-
-#include "lib/lttng-ust/ust-events-internal.h"
+#include "common/events.h"
/* Include link.h last else it conflicts with ust-dlfcn. */
#include <link.h>
context-internal.h \
context-provider-internal.h \
tracepoint-internal.h \
- ust-events-internal.h \
+ events.h \
clock.h \
jhash.h \
lttng-ust-uuid.h \
#define _LTTNG_UST_CONTEXT_INTERNAL_H
#include <lttng/ust-events.h>
-#include "ust-events-internal.h"
+#include "lib/lttng-ust/events.h"
#include "common/ust-context-provider.h"
int lttng_context_init_all(struct lttng_ust_ctx **ctx)
#include <urcu/rculist.h>
#include "lttng-tracer-core.h"
-#include "ust-events-internal.h"
+#include "lib/lttng-ust/events.h"
#include "common/msgpack/msgpack.h"
#include "lttng-bytecode.h"
#include "common/patient.h"
--- /dev/null
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright 2019 (c) Francis Deslauriers <francis.deslauriers@efficios.com>
+ */
+
+#ifndef _LTTNG_UST_EVENTS_INTERNAL_H
+#define _LTTNG_UST_EVENTS_INTERNAL_H
+
+#include "common/events.h"
+
+/*
+ * Allocate and initialize a `struct lttng_event_enabler` object.
+ *
+ * On success, returns a `struct lttng_event_enabler`,
+ * On memory error, returns NULL.
+ */
+struct lttng_event_enabler *lttng_event_enabler_create(
+ enum lttng_enabler_format_type format_type,
+ struct lttng_ust_abi_event *event_param,
+ struct lttng_ust_channel_buffer *chan)
+ __attribute__((visibility("hidden")));
+
+/*
+ * Destroy a `struct lttng_event_enabler` object.
+ */
+void lttng_event_enabler_destroy(struct lttng_event_enabler *enabler)
+ __attribute__((visibility("hidden")));
+
+/*
+ * Enable a `struct lttng_event_enabler` object and all events related to this
+ * enabler.
+ */
+int lttng_event_enabler_enable(struct lttng_event_enabler *enabler)
+ __attribute__((visibility("hidden")));
+
+/*
+ * Disable a `struct lttng_event_enabler` object and all events related to this
+ * enabler.
+ */
+int lttng_event_enabler_disable(struct lttng_event_enabler *enabler)
+ __attribute__((visibility("hidden")));
+
+/*
+ * Attach filter bytecode program to `struct lttng_event_enabler` and all
+ * events related to this enabler.
+ */
+int lttng_event_enabler_attach_filter_bytecode(
+ struct lttng_event_enabler *enabler,
+ struct lttng_ust_bytecode_node **bytecode)
+ __attribute__((visibility("hidden")));
+
+/*
+ * Attach an application context to an event enabler.
+ *
+ * Not implemented.
+ */
+int lttng_event_enabler_attach_context(struct lttng_event_enabler *enabler,
+ struct lttng_ust_abi_context *ctx)
+ __attribute__((visibility("hidden")));
+
+/*
+ * Attach exclusion list to `struct lttng_event_enabler` and all
+ * events related to this enabler.
+ */
+int lttng_event_enabler_attach_exclusion(struct lttng_event_enabler *enabler,
+ struct lttng_ust_excluder_node **excluder)
+ __attribute__((visibility("hidden")));
+
+/*
+ * Synchronize bytecodes for the enabler and the instance (event or
+ * event_notifier).
+ *
+ * This function goes over all bytecode programs of the enabler (event or
+ * event_notifier enabler) to ensure each is linked to the provided instance.
+ */
+void lttng_enabler_link_bytecode(const struct lttng_ust_event_desc *event_desc,
+ struct lttng_ust_ctx **ctx,
+ struct cds_list_head *instance_bytecode_runtime_head,
+ struct cds_list_head *enabler_bytecode_runtime_head)
+ __attribute__((visibility("hidden")));
+
+/*
+ * Allocate and initialize a `struct lttng_event_notifier_group` object.
+ *
+ * On success, returns a `struct lttng_triggre_group`,
+ * on memory error, returns NULL.
+ */
+struct lttng_event_notifier_group *lttng_event_notifier_group_create(void)
+ __attribute__((visibility("hidden")));
+
+/*
+ * Destroy a `struct lttng_event_notifier_group` object.
+ */
+void lttng_event_notifier_group_destroy(
+ struct lttng_event_notifier_group *event_notifier_group)
+ __attribute__((visibility("hidden")));
+
+/*
+ * Allocate and initialize a `struct lttng_event_notifier_enabler` object.
+ *
+ * On success, returns a `struct lttng_event_notifier_enabler`,
+ * On memory error, returns NULL.
+ */
+struct lttng_event_notifier_enabler *lttng_event_notifier_enabler_create(
+ struct lttng_event_notifier_group *event_notifier_group,
+ enum lttng_enabler_format_type format_type,
+ struct lttng_ust_abi_event_notifier *event_notifier_param)
+ __attribute__((visibility("hidden")));
+
+/*
+ * Destroy a `struct lttng_event_notifier_enabler` object.
+ */
+void lttng_event_notifier_enabler_destroy(
+ struct lttng_event_notifier_enabler *event_notifier_enabler)
+ __attribute__((visibility("hidden")));
+
+/*
+ * Enable a `struct lttng_event_notifier_enabler` object and all event
+ * notifiers related to this enabler.
+ */
+int lttng_event_notifier_enabler_enable(
+ struct lttng_event_notifier_enabler *event_notifier_enabler)
+ __attribute__((visibility("hidden")));
+
+/*
+ * Disable a `struct lttng_event_notifier_enabler` object and all event
+ * notifiers related to this enabler.
+ */
+int lttng_event_notifier_enabler_disable(
+ struct lttng_event_notifier_enabler *event_notifier_enabler)
+ __attribute__((visibility("hidden")));
+
+/*
+ * Attach filter bytecode program to `struct lttng_event_notifier_enabler` and
+ * all event notifiers related to this enabler.
+ */
+int lttng_event_notifier_enabler_attach_filter_bytecode(
+ struct lttng_event_notifier_enabler *event_notifier_enabler,
+ struct lttng_ust_bytecode_node **bytecode)
+ __attribute__((visibility("hidden")));
+
+/*
+ * Attach capture bytecode program to `struct lttng_event_notifier_enabler` and
+ * all event_notifiers related to this enabler.
+ */
+int lttng_event_notifier_enabler_attach_capture_bytecode(
+ struct lttng_event_notifier_enabler *event_notifier_enabler,
+ struct lttng_ust_bytecode_node **bytecode)
+ __attribute__((visibility("hidden")));
+
+/*
+ * Attach exclusion list to `struct lttng_event_notifier_enabler` and all
+ * event notifiers related to this enabler.
+ */
+int lttng_event_notifier_enabler_attach_exclusion(
+ struct lttng_event_notifier_enabler *event_notifier_enabler,
+ struct lttng_ust_excluder_node **excluder)
+ __attribute__((visibility("hidden")));
+
+void lttng_free_event_filter_runtime(struct lttng_ust_event_common *event)
+ __attribute__((visibility("hidden")));
+
+/*
+ * Connect the probe on all enablers matching this event description.
+ * Called on library load.
+ */
+int lttng_fix_pending_event_notifiers(void)
+ __attribute__((visibility("hidden")));
+
+struct lttng_counter *lttng_ust_counter_create(
+ const char *counter_transport_name,
+ size_t number_dimensions, const struct lttng_counter_dimension *dimensions)
+ __attribute__((visibility("hidden")));
+
+#ifdef HAVE_LINUX_PERF_EVENT_H
+
+int lttng_add_perf_counter_to_ctx(uint32_t type,
+ uint64_t config,
+ const char *name,
+ struct lttng_ust_ctx **ctx)
+ __attribute__((visibility("hidden")));
+
+int lttng_perf_counter_init(void)
+ __attribute__((visibility("hidden")));
+
+void lttng_perf_counter_exit(void)
+ __attribute__((visibility("hidden")));
+
+#else /* #ifdef HAVE_LINUX_PERF_EVENT_H */
+
+static inline
+int lttng_add_perf_counter_to_ctx(uint32_t type,
+ uint64_t config,
+ const char *name,
+ struct lttng_ust_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 HAVE_LINUX_PERF_EVENT_H */
+
+int lttng_probes_get_event_list(struct lttng_ust_tracepoint_list *list)
+ __attribute__((visibility("hidden")));
+
+void lttng_probes_prune_event_list(struct lttng_ust_tracepoint_list *list)
+ __attribute__((visibility("hidden")));
+
+int lttng_probes_get_field_list(struct lttng_ust_field_list *list)
+ __attribute__((visibility("hidden")));
+
+void lttng_probes_prune_field_list(struct lttng_ust_field_list *list)
+ __attribute__((visibility("hidden")));
+
+struct lttng_ust_abi_tracepoint_iter *
+ lttng_ust_tracepoint_list_get_iter_next(struct lttng_ust_tracepoint_list *list)
+ __attribute__((visibility("hidden")));
+
+struct lttng_ust_abi_field_iter *
+ lttng_ust_field_list_get_iter_next(struct lttng_ust_field_list *list)
+ __attribute__((visibility("hidden")));
+
+struct lttng_ust_session *lttng_session_create(void)
+ __attribute__((visibility("hidden")));
+
+int lttng_session_enable(struct lttng_ust_session *session)
+ __attribute__((visibility("hidden")));
+
+int lttng_session_disable(struct lttng_ust_session *session)
+ __attribute__((visibility("hidden")));
+
+int lttng_session_statedump(struct lttng_ust_session *session)
+ __attribute__((visibility("hidden")));
+
+void lttng_session_destroy(struct lttng_ust_session *session)
+ __attribute__((visibility("hidden")));
+
+/*
+ * Called with ust lock held.
+ */
+int lttng_session_active(void)
+ __attribute__((visibility("hidden")));
+
+struct cds_list_head *lttng_get_sessions(void)
+ __attribute__((visibility("hidden")));
+
+void lttng_handle_pending_statedump(void *owner)
+ __attribute__((visibility("hidden")));
+
+int lttng_channel_enable(struct lttng_ust_channel_common *lttng_channel)
+ __attribute__((visibility("hidden")));
+
+int lttng_channel_disable(struct lttng_ust_channel_common *lttng_channel)
+ __attribute__((visibility("hidden")));
+
+void lttng_transport_register(struct lttng_transport *transport)
+ __attribute__((visibility("hidden")));
+
+void lttng_transport_unregister(struct lttng_transport *transport)
+ __attribute__((visibility("hidden")));
+
+void lttng_probe_provider_unregister_events(const struct lttng_ust_probe_desc *desc)
+ __attribute__((visibility("hidden")));
+
+int lttng_fix_pending_events(void)
+ __attribute__((visibility("hidden")));
+
+struct cds_list_head *lttng_get_probe_list_head(void)
+ __attribute__((visibility("hidden")));
+
+int lttng_abi_create_root_handle(void)
+ __attribute__((visibility("hidden")));
+
+const struct lttng_ust_abi_objd_ops *lttng_ust_abi_objd_ops(int id)
+ __attribute__((visibility("hidden")));
+
+int lttng_ust_abi_objd_unref(int id, int is_owner)
+ __attribute__((visibility("hidden")));
+
+void lttng_ust_abi_exit(void)
+ __attribute__((visibility("hidden")));
+
+void lttng_ust_abi_events_exit(void)
+ __attribute__((visibility("hidden")));
+
+void lttng_ust_abi_objd_table_owner_cleanup(void *owner)
+ __attribute__((visibility("hidden")));
+
+struct lttng_ust_channel_buffer *lttng_ust_alloc_channel_buffer(void)
+ __attribute__((visibility("hidden")));
+
+void lttng_ust_free_channel_common(struct lttng_ust_channel_common *chan)
+ __attribute__((visibility("hidden")));
+
+int lttng_ust_interpret_event_filter(struct lttng_ust_event_common *event,
+ const char *interpreter_stack_data,
+ void *filter_ctx)
+ __attribute__((visibility("hidden")));
+
+int lttng_ust_session_uuid_validate(struct lttng_ust_session *session,
+ unsigned char *uuid)
+ __attribute__((visibility("hidden")));
+
+bool lttng_ust_validate_event_name(const struct lttng_ust_event_desc *desc)
+ __attribute__((visibility("hidden")));
+
+void lttng_ust_format_event_name(const struct lttng_ust_event_desc *desc,
+ char *name)
+ __attribute__((visibility("hidden")));
+
+int lttng_ust_add_app_context_to_ctx_rcu(const char *name, struct lttng_ust_ctx **ctx)
+ __attribute__((visibility("hidden")));
+
+int lttng_ust_context_set_provider_rcu(struct lttng_ust_ctx **_ctx,
+ const char *name,
+ size_t (*get_size)(void *priv, size_t offset),
+ void (*record)(void *priv, struct lttng_ust_lib_ring_buffer_ctx *ctx,
+ struct lttng_ust_channel_buffer *chan),
+ void (*get_value)(void *priv, struct lttng_ust_ctx_value *value),
+ void *priv)
+ __attribute__((visibility("hidden")));
+
+void lttng_ust_context_set_session_provider(const char *name,
+ size_t (*get_size)(void *priv, size_t offset),
+ void (*record)(void *priv, struct lttng_ust_lib_ring_buffer_ctx *ctx,
+ struct lttng_ust_channel_buffer *chan),
+ void (*get_value)(void *priv, struct lttng_ust_ctx_value *value),
+ void *priv)
+ __attribute__((visibility("hidden")));
+
+#endif /* _LTTNG_UST_EVENTS_INTERNAL_H */
#include <urcu/rculist.h>
#include <lttng/ust-endian.h>
#include <lttng/ust-events.h>
-#include "ust-events-internal.h"
+#include "lib/lttng-ust/events.h"
#include "lttng-bytecode.h"
#include "string-utils.h"
#include "context-internal.h"
#include "lttng-bytecode.h"
-#include "ust-events-internal.h"
+#include "lib/lttng-ust/events.h"
#include "common/macros.h"
static int lttng_fls(int val)
#include "lttng-bytecode.h"
#include "lttng-hash-helper.h"
#include "string-utils.h"
-#include "ust-events-internal.h"
+#include "lib/lttng-ust/events.h"
#include "common/macros.h"
/*
#include "context-internal.h"
#include "lttng-bytecode.h"
-#include "ust-events-internal.h"
+#include "lib/lttng-ust/events.h"
#include "common/macros.h"
static const char *opnames[] = {
#include <limits.h>
#include "common/logging.h"
#include "bytecode.h"
-#include "ust-events-internal.h"
+#include "lib/lttng-ust/events.h"
/* Interpreter stack length, in number of entries */
#define INTERPRETER_STACK_LEN 10 /* includes 2 dummy */
#include "context-internal.h"
#include "lttng-tracer-core.h"
-#include "ust-events-internal.h"
+#include "lib/lttng-ust/events.h"
/*
* We use a global perf counter key and iterate on per-thread RCU lists
* Copyright (C) 2020 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*/
-#include "ust-events-internal.h"
+#include "lib/lttng-ust/events.h"
#include "common/counter/counter.h"
#include "common/counter/counter-api.h"
#include "lttng-tracer-core.h"
* Copyright (C) 2020 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*/
-#include "ust-events-internal.h"
+#include "lib/lttng-ust/events.h"
#include "common/counter/counter.h"
#include "common/counter/counter-api.h"
#include "lttng-tracer-core.h"
#include "lttng-tracer-core.h"
#include "lttng-ust-statedump.h"
#include "context-internal.h"
-#include "ust-events-internal.h"
+#include "lib/lttng-ust/events.h"
#include "wait.h"
#include "common/ringbuffer/shm.h"
#include "common/ringbuffer/frontend_types.h"
#include "lttng-tracer-core.h"
#include "jhash.h"
#include "error.h"
-#include "ust-events-internal.h"
+#include "lib/lttng-ust/events.h"
/*
* probe list is protected by ust_lock()/ust_unlock().
#include <stddef.h>
#include <stdint.h>
-#include <ust-events-internal.h>
+#include "lib/lttng-ust/events.h"
#include <lttng/urcu/pointer.h>
#include "common/bitfield.h"
#include "common/align.h"
#include <stddef.h>
#include <stdint.h>
-#include <ust-events-internal.h>
+#include "lib/lttng-ust/events.h"
#include "common/bitfield.h"
#include "common/align.h"
#include "lttng-tracer.h"
#include "tracepoint-internal.h"
#include "lttng-tracer.h"
#include "string-utils.h"
-#include "ust-events-internal.h"
+#include "lib/lttng-ust/events.h"
#include "context-internal.h"
#include "common/macros.h"
#include "clock.h"
#include "lib/lttng-ust/getcpu.h"
#include "common/getenv.h"
-#include "ust-events-internal.h"
+#include "lib/lttng-ust/events.h"
#include "context-internal.h"
#include "common/align.h"
#include "lttng-counter-client.h"
#include "lttng-ust-statedump.h"
#include "jhash.h"
#include "common/getenv.h"
-#include "ust-events-internal.h"
+#include "lib/lttng-ust/events.h"
#define TRACEPOINT_DEFINE
#include "ust_lib.h" /* Only define. */
#include <stdlib.h>
#include "context-internal.h"
-#include "ust-events-internal.h"
+#include "lib/lttng-ust/events.h"
#include "common/logging.h"
#include "lttng-tracer-core.h"
#include "lttng-rb-clients.h"
+++ /dev/null
-/*
- * SPDX-License-Identifier: MIT
- *
- * Copyright 2019 (c) Francis Deslauriers <francis.deslauriers@efficios.com>
- */
-
-#ifndef _LTTNG_UST_EVENTS_INTERNAL_H
-#define _LTTNG_UST_EVENTS_INTERNAL_H
-
-#include <limits.h>
-#include <stdint.h>
-
-#include <urcu/list.h>
-#include <urcu/hlist.h>
-
-#include <lttng/ust-events.h>
-
-#include "common/macros.h"
-#include "common/ust-context-provider.h"
-
-struct lttng_ust_abi_obj;
-struct lttng_event_notifier_group;
-
-union lttng_ust_abi_args {
- struct {
- void *chan_data;
- int wakeup_fd;
- } channel;
- struct {
- int shm_fd;
- int wakeup_fd;
- } stream;
- struct {
- struct lttng_ust_abi_field_iter entry;
- } field_list;
- struct {
- char *ctxname;
- } app_context;
- struct {
- int event_notifier_notif_fd;
- } event_notifier_handle;
- struct {
- void *counter_data;
- } counter;
- struct {
- int shm_fd;
- } counter_shm;
-};
-
-struct lttng_ust_abi_objd_ops {
- long (*cmd)(int objd, unsigned int cmd, unsigned long arg,
- union lttng_ust_abi_args *args, void *owner);
- int (*release)(int objd);
-};
-
-enum lttng_enabler_format_type {
- LTTNG_ENABLER_FORMAT_STAR_GLOB,
- LTTNG_ENABLER_FORMAT_EVENT,
-};
-
-/*
- * Enabler field, within whatever object is enabling an event. Target of
- * backward reference.
- */
-struct lttng_enabler {
- enum lttng_enabler_format_type format_type;
-
- /* 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 lttng_ust_abi_event event_param;
- unsigned int enabled:1;
-};
-
-struct lttng_event_enabler {
- struct lttng_enabler base;
- struct cds_list_head node; /* per-session list of enablers */
- struct lttng_ust_channel_buffer *chan;
- /*
- * Unused, but kept around to make it explicit that the tracer can do
- * it.
- */
- struct lttng_ust_ctx *ctx;
-};
-
-struct lttng_event_notifier_enabler {
- struct lttng_enabler base;
- uint64_t error_counter_index;
- struct cds_list_head node; /* per-app list of event_notifier enablers */
- struct cds_list_head capture_bytecode_head;
- struct lttng_event_notifier_group *group; /* weak ref */
- uint64_t user_token; /* User-provided token */
- uint64_t num_captures;
-};
-
-enum lttng_ust_bytecode_type {
- LTTNG_UST_BYTECODE_TYPE_FILTER,
- LTTNG_UST_BYTECODE_TYPE_CAPTURE,
-};
-
-struct lttng_ust_bytecode_node {
- enum lttng_ust_bytecode_type type;
- struct cds_list_head node;
- struct lttng_enabler *enabler;
- struct {
- uint32_t len;
- uint32_t reloc_offset;
- uint64_t seqnum;
- char data[];
- } bc;
-};
-
-/*
- * Bytecode interpreter return value.
- */
-enum lttng_ust_bytecode_interpreter_ret {
- LTTNG_UST_BYTECODE_INTERPRETER_ERROR = -1,
- LTTNG_UST_BYTECODE_INTERPRETER_OK = 0,
-};
-
-struct lttng_interpreter_output;
-struct lttng_ust_bytecode_runtime_private;
-
-enum lttng_ust_bytecode_filter_result {
- LTTNG_UST_BYTECODE_FILTER_ACCEPT = 0,
- LTTNG_UST_BYTECODE_FILTER_REJECT = 1,
-};
-
-struct lttng_ust_bytecode_filter_ctx {
- enum lttng_ust_bytecode_filter_result result;
-};
-
-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_abi_event_exclusion excluder;
-};
-
-/* Data structures used by the tracer. */
-
-struct tp_list_entry {
- struct lttng_ust_abi_tracepoint_iter tp;
- struct cds_list_head head;
-};
-
-struct lttng_ust_tracepoint_list {
- struct tp_list_entry *iter;
- struct cds_list_head head;
-};
-
-struct tp_field_list_entry {
- struct lttng_ust_abi_field_iter field;
- struct cds_list_head head;
-};
-
-struct lttng_ust_field_list {
- struct tp_field_list_entry *iter;
- struct cds_list_head head;
-};
-
-/*
- * Objects in a linked-list of enablers, owned by an event or event_notifier.
- * This is used because an event (or a event_notifier) can be enabled by more
- * than one enabler and we want a quick way to iterate over all enablers of an
- * object.
- *
- * For example, event rules "my_app:a*" and "my_app:ab*" will both match the
- * event with the name "my_app:abc".
- */
-struct lttng_enabler_ref {
- struct cds_list_head node; /* enabler ref list */
- struct lttng_enabler *ref; /* backward ref */
-};
-
-#define LTTNG_COUNTER_DIMENSION_MAX 8
-struct lttng_counter_dimension {
- uint64_t size;
- uint64_t underflow_index;
- uint64_t overflow_index;
- uint8_t has_underflow;
- uint8_t has_overflow;
-};
-
-struct lttng_counter_ops {
- struct lib_counter *(*counter_create)(size_t nr_dimensions,
- const struct lttng_counter_dimension *dimensions,
- int64_t global_sum_step,
- int global_counter_fd,
- int nr_counter_cpu_fds,
- const int *counter_cpu_fds,
- bool is_daemon);
- void (*counter_destroy)(struct lib_counter *counter);
- int (*counter_add)(struct lib_counter *counter,
- const size_t *dimension_indexes, int64_t v);
- int (*counter_read)(struct lib_counter *counter,
- const size_t *dimension_indexes, int cpu,
- int64_t *value, bool *overflow, bool *underflow);
- int (*counter_aggregate)(struct lib_counter *counter,
- const size_t *dimension_indexes, int64_t *value,
- bool *overflow, bool *underflow);
- int (*counter_clear)(struct lib_counter *counter, const size_t *dimension_indexes);
-};
-
-struct lttng_counter {
- int objd;
- struct lttng_event_notifier_group *event_notifier_group; /* owner */
- struct lttng_counter_transport *transport;
- struct lib_counter *counter;
- struct lttng_counter_ops *ops;
-};
-
-#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_EVENT_NOTIFIER_HT_BITS 12
-#define LTTNG_UST_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_UST_EVENT_NOTIFIER_HT_BITS)
-struct lttng_ust_event_notifier_ht {
- struct cds_hlist_head table[LTTNG_UST_EVENT_NOTIFIER_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];
-};
-
-struct lttng_event_notifier_group {
- int objd;
- void *owner;
- int notification_fd;
- struct cds_list_head node; /* Event notifier group handle list */
- struct cds_list_head enablers_head;
- struct cds_list_head event_notifiers_head; /* list of event_notifiers */
- struct lttng_ust_event_notifier_ht event_notifiers_ht; /* hashtable of event_notifiers */
- struct lttng_ust_ctx *ctx; /* contexts for filters. */
-
- struct lttng_counter *error_counter;
- size_t error_counter_len;
-};
-
-struct lttng_transport {
- const char *name;
- struct cds_list_head node;
- struct lttng_ust_channel_buffer_ops ops;
- const struct lttng_ust_lib_ring_buffer_config *client_config;
-};
-
-struct lttng_counter_transport {
- const char *name;
- struct cds_list_head node;
- struct lttng_counter_ops ops;
- const struct lib_counter_config *client_config;
-};
-
-struct lttng_ust_event_common_private {
- struct lttng_ust_event_common *pub; /* Public event interface */
-
- const struct lttng_ust_event_desc *desc;
- /* Backward references: list of lttng_enabler_ref (ref to enablers) */
- struct cds_list_head enablers_ref_head;
- int registered; /* has reg'd tracepoint probe */
- uint64_t user_token;
-
- int has_enablers_without_filter_bytecode;
- /* list of struct lttng_ust_bytecode_runtime, sorted by seqnum */
- struct cds_list_head filter_bytecode_runtime_head;
-};
-
-struct lttng_ust_event_recorder_private {
- struct lttng_ust_event_common_private parent;
-
- struct lttng_ust_event_recorder *pub; /* Public event interface */
- struct cds_list_head node; /* Event recorder list */
- struct cds_hlist_node hlist; /* Hash table of event recorders */
- struct lttng_ust_ctx *ctx;
- unsigned int id;
-};
-
-struct lttng_ust_event_notifier_private {
- struct lttng_ust_event_common_private parent;
-
- struct lttng_ust_event_notifier *pub; /* Public event notifier interface */
- struct lttng_event_notifier_group *group; /* weak ref */
- size_t num_captures; /* Needed to allocate the msgpack array. */
- uint64_t error_counter_index;
- struct cds_list_head node; /* Event notifier list */
- struct cds_hlist_node hlist; /* Hash table of event notifiers */
- struct cds_list_head capture_bytecode_runtime_head;
-};
-
-struct lttng_ust_bytecode_runtime {
- enum lttng_ust_bytecode_type type;
- struct lttng_ust_bytecode_node *bc;
- int link_failed;
- int (*interpreter_func)(struct lttng_ust_bytecode_runtime *bytecode_runtime,
- const char *interpreter_stack_data,
- void *ctx);
- struct cds_list_head node; /* list of bytecode runtime in event */
- /*
- * Pointer to a URCU-protected pointer owned by an `struct
- * lttng_session`or `struct lttng_event_notifier_group`.
- */
- struct lttng_ust_ctx **pctx;
-};
-
-struct lttng_ust_session_private {
- struct lttng_ust_session *pub; /* Public session interface */
-
- int been_active; /* Been active ? */
- int objd; /* Object associated */
- struct cds_list_head chan_head; /* Channel list head */
- struct cds_list_head events_head; /* list of events */
- struct cds_list_head node; /* Session list */
-
- /* 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 */
-
- int statedump_pending:1;
-
- struct lttng_ust_enum_ht enums_ht; /* ht of enumerations */
- struct cds_list_head enums_head;
- struct lttng_ust_ctx *ctx; /* contexts for filters. */
-
- unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */
- bool uuid_set; /* Is uuid set ? */
-};
-
-struct lttng_enum {
- const struct lttng_ust_enum_desc *desc;
- struct lttng_ust_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 lttng_ust_shm_handle;
-
-struct lttng_ust_channel_buffer_ops_private {
- struct lttng_ust_channel_buffer_ops *pub; /* Public channel buffer ops interface */
-
- struct lttng_ust_channel_buffer *(*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,
- unsigned char *uuid,
- uint32_t chan_id,
- const int *stream_fds, int nr_stream_fds,
- int64_t blocking_timeout);
- void (*channel_destroy)(struct lttng_ust_channel_buffer *chan);
- /*
- * packet_avail_size returns the available size in the current
- * packet. Note that the size returned is only a hint, since it
- * may change due to concurrent writes.
- */
- size_t (*packet_avail_size)(struct lttng_ust_channel_buffer *chan);
- int (*is_finalized)(struct lttng_ust_channel_buffer *chan);
- int (*is_disabled)(struct lttng_ust_channel_buffer *chan);
- int (*flush_buffer)(struct lttng_ust_channel_buffer *chan);
-};
-
-struct lttng_ust_channel_common_private {
- struct lttng_ust_channel_common *pub; /* Public channel interface */
-
- int objd; /* Object associated with channel. */
- int tstate:1; /* Transient enable state */
-};
-
-struct lttng_ust_channel_buffer_private {
- struct lttng_ust_channel_common_private parent;
-
- struct lttng_ust_channel_buffer *pub; /* Public channel buffer interface */
- struct cds_list_head node; /* Channel list in session */
- int header_type; /* 0: unset, 1: compact, 2: large */
- unsigned int id; /* Channel ID */
- enum lttng_ust_abi_chan_type type;
- struct lttng_ust_ctx *ctx;
- struct lttng_ust_lib_ring_buffer_channel *rb_chan; /* Ring buffer channel */
- unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */
-};
-
-/*
- * IMPORTANT: this structure is part of the ABI between the consumer
- * daemon and the UST library within traced applications. Changing it
- * breaks the UST communication protocol.
- *
- * TODO: remove unused fields on next UST communication protocol
- * breaking update.
- */
-struct lttng_ust_abi_channel_config {
- void *unused1;
- int unused2;
- void *unused3;
- void *unused4;
- int unused5;
- struct cds_list_head unused6;
- void *unused7;
- int unused8;
- void *unused9;
-
- /* Channel ID */
- unsigned int id;
- enum lttng_ust_abi_chan_type unused10;
- unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */
- int unused11:1;
-};
-
-/* Global (filter), event and channel contexts. */
-struct lttng_ust_ctx {
- struct lttng_ust_ctx_field *fields;
- unsigned int nr_fields;
- unsigned int allocated_fields;
- unsigned int largest_align;
-};
-
-struct lttng_ust_registered_probe {
- const struct lttng_ust_probe_desc *desc;
-
- struct cds_list_head head; /* chain registered probes */
- struct cds_list_head lazy_init_head;
- int lazy; /* lazy registration */
-};
-
-/*
- * Context field
- */
-
-struct lttng_ust_ctx_field {
- const struct lttng_ust_event_field *event_field;
- size_t (*get_size)(void *priv, size_t offset);
- void (*record)(void *priv, struct lttng_ust_lib_ring_buffer_ctx *ctx,
- struct lttng_ust_channel_buffer *chan);
- void (*get_value)(void *priv, struct lttng_ust_ctx_value *value);
- void (*destroy)(void *priv);
- void *priv;
-};
-
-static inline
-const struct lttng_ust_type_integer *lttng_ust_get_type_integer(const struct lttng_ust_type_common *type)
-{
- if (type->type != lttng_ust_type_integer)
- return NULL;
- return caa_container_of(type, const struct lttng_ust_type_integer, parent);
-}
-
-static inline
-const struct lttng_ust_type_float *lttng_ust_get_type_float(const struct lttng_ust_type_common *type)
-{
- if (type->type != lttng_ust_type_float)
- return NULL;
- return caa_container_of(type, const struct lttng_ust_type_float, parent);
-}
-
-static inline
-const struct lttng_ust_type_string *lttng_ust_get_type_string(const struct lttng_ust_type_common *type)
-{
- if (type->type != lttng_ust_type_string)
- return NULL;
- return caa_container_of(type, const struct lttng_ust_type_string, parent);
-}
-
-static inline
-const struct lttng_ust_type_enum *lttng_ust_get_type_enum(const struct lttng_ust_type_common *type)
-{
- if (type->type != lttng_ust_type_enum)
- return NULL;
- return caa_container_of(type, const struct lttng_ust_type_enum, parent);
-}
-
-static inline
-const struct lttng_ust_type_array *lttng_ust_get_type_array(const struct lttng_ust_type_common *type)
-{
- if (type->type != lttng_ust_type_array)
- return NULL;
- return caa_container_of(type, const struct lttng_ust_type_array, parent);
-}
-
-static inline
-const struct lttng_ust_type_sequence *lttng_ust_get_type_sequence(const struct lttng_ust_type_common *type)
-{
- if (type->type != lttng_ust_type_sequence)
- return NULL;
- return caa_container_of(type, const struct lttng_ust_type_sequence, parent);
-}
-
-static inline
-const struct lttng_ust_type_struct *lttng_ust_get_type_struct(const struct lttng_ust_type_common *type)
-{
- if (type->type != lttng_ust_type_struct)
- return NULL;
- return caa_container_of(type, const struct lttng_ust_type_struct, parent);
-}
-
-#define lttng_ust_static_type_integer(_size, _alignment, _signedness, _byte_order, _base) \
- ((const struct lttng_ust_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_type_integer, { \
- .parent = { \
- .type = lttng_ust_type_integer, \
- }, \
- .struct_size = sizeof(struct lttng_ust_type_integer), \
- .size = (_size), \
- .alignment = (_alignment), \
- .signedness = (_signedness), \
- .reverse_byte_order = (_byte_order) != BYTE_ORDER, \
- .base = (_base), \
- }))
-
-#define lttng_ust_static_type_array_text(_length) \
- ((const struct lttng_ust_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_type_array, { \
- .parent = { \
- .type = lttng_ust_type_array, \
- }, \
- .struct_size = sizeof(struct lttng_ust_type_array), \
- .length = (_length), \
- .alignment = 0, \
- .encoding = lttng_ust_string_encoding_UTF8, \
- .elem_type = lttng_ust_static_type_integer(sizeof(char) * CHAR_BIT, \
- lttng_ust_rb_alignof(char) * CHAR_BIT, lttng_ust_is_signed_type(char), \
- BYTE_ORDER, 10), \
- }))
-
-#define lttng_ust_static_event_field(_name, _type, _nowrite, _nofilter) \
- __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_event_field, { \
- .struct_size = sizeof(struct lttng_ust_event_field), \
- .name = (_name), \
- .type = (_type), \
- .nowrite = (_nowrite), \
- .nofilter = (_nofilter), \
- })
-
-#define lttng_ust_static_ctx_field(_event_field, _get_size, _record, _get_value, _destroy, _priv) \
- __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_ctx_field, { \
- .event_field = (_event_field), \
- .get_size = (_get_size), \
- .record = (_record), \
- .get_value = (_get_value), \
- .destroy = (_destroy), \
- .priv = (_priv), \
- })
-
-static inline
-struct lttng_enabler *lttng_event_enabler_as_enabler(
- struct lttng_event_enabler *event_enabler)
-{
- return &event_enabler->base;
-}
-
-static inline
-struct lttng_enabler *lttng_event_notifier_enabler_as_enabler(
- struct lttng_event_notifier_enabler *event_notifier_enabler)
-{
- return &event_notifier_enabler->base;
-}
-
-/*
- * Allocate and initialize a `struct lttng_event_enabler` object.
- *
- * On success, returns a `struct lttng_event_enabler`,
- * On memory error, returns NULL.
- */
-struct lttng_event_enabler *lttng_event_enabler_create(
- enum lttng_enabler_format_type format_type,
- struct lttng_ust_abi_event *event_param,
- struct lttng_ust_channel_buffer *chan)
- __attribute__((visibility("hidden")));
-
-/*
- * Destroy a `struct lttng_event_enabler` object.
- */
-void lttng_event_enabler_destroy(struct lttng_event_enabler *enabler)
- __attribute__((visibility("hidden")));
-
-/*
- * Enable a `struct lttng_event_enabler` object and all events related to this
- * enabler.
- */
-int lttng_event_enabler_enable(struct lttng_event_enabler *enabler)
- __attribute__((visibility("hidden")));
-
-/*
- * Disable a `struct lttng_event_enabler` object and all events related to this
- * enabler.
- */
-int lttng_event_enabler_disable(struct lttng_event_enabler *enabler)
- __attribute__((visibility("hidden")));
-
-/*
- * Attach filter bytecode program to `struct lttng_event_enabler` and all
- * events related to this enabler.
- */
-int lttng_event_enabler_attach_filter_bytecode(
- struct lttng_event_enabler *enabler,
- struct lttng_ust_bytecode_node **bytecode)
- __attribute__((visibility("hidden")));
-
-/*
- * Attach an application context to an event enabler.
- *
- * Not implemented.
- */
-int lttng_event_enabler_attach_context(struct lttng_event_enabler *enabler,
- struct lttng_ust_abi_context *ctx)
- __attribute__((visibility("hidden")));
-
-/*
- * Attach exclusion list to `struct lttng_event_enabler` and all
- * events related to this enabler.
- */
-int lttng_event_enabler_attach_exclusion(struct lttng_event_enabler *enabler,
- struct lttng_ust_excluder_node **excluder)
- __attribute__((visibility("hidden")));
-
-/*
- * Synchronize bytecodes for the enabler and the instance (event or
- * event_notifier).
- *
- * This function goes over all bytecode programs of the enabler (event or
- * event_notifier enabler) to ensure each is linked to the provided instance.
- */
-void lttng_enabler_link_bytecode(const struct lttng_ust_event_desc *event_desc,
- struct lttng_ust_ctx **ctx,
- struct cds_list_head *instance_bytecode_runtime_head,
- struct cds_list_head *enabler_bytecode_runtime_head)
- __attribute__((visibility("hidden")));
-
-/*
- * Allocate and initialize a `struct lttng_event_notifier_group` object.
- *
- * On success, returns a `struct lttng_triggre_group`,
- * on memory error, returns NULL.
- */
-struct lttng_event_notifier_group *lttng_event_notifier_group_create(void)
- __attribute__((visibility("hidden")));
-
-/*
- * Destroy a `struct lttng_event_notifier_group` object.
- */
-void lttng_event_notifier_group_destroy(
- struct lttng_event_notifier_group *event_notifier_group)
- __attribute__((visibility("hidden")));
-
-/*
- * Allocate and initialize a `struct lttng_event_notifier_enabler` object.
- *
- * On success, returns a `struct lttng_event_notifier_enabler`,
- * On memory error, returns NULL.
- */
-struct lttng_event_notifier_enabler *lttng_event_notifier_enabler_create(
- struct lttng_event_notifier_group *event_notifier_group,
- enum lttng_enabler_format_type format_type,
- struct lttng_ust_abi_event_notifier *event_notifier_param)
- __attribute__((visibility("hidden")));
-
-/*
- * Destroy a `struct lttng_event_notifier_enabler` object.
- */
-void lttng_event_notifier_enabler_destroy(
- struct lttng_event_notifier_enabler *event_notifier_enabler)
- __attribute__((visibility("hidden")));
-
-/*
- * Enable a `struct lttng_event_notifier_enabler` object and all event
- * notifiers related to this enabler.
- */
-int lttng_event_notifier_enabler_enable(
- struct lttng_event_notifier_enabler *event_notifier_enabler)
- __attribute__((visibility("hidden")));
-
-/*
- * Disable a `struct lttng_event_notifier_enabler` object and all event
- * notifiers related to this enabler.
- */
-int lttng_event_notifier_enabler_disable(
- struct lttng_event_notifier_enabler *event_notifier_enabler)
- __attribute__((visibility("hidden")));
-
-/*
- * Attach filter bytecode program to `struct lttng_event_notifier_enabler` and
- * all event notifiers related to this enabler.
- */
-int lttng_event_notifier_enabler_attach_filter_bytecode(
- struct lttng_event_notifier_enabler *event_notifier_enabler,
- struct lttng_ust_bytecode_node **bytecode)
- __attribute__((visibility("hidden")));
-
-/*
- * Attach capture bytecode program to `struct lttng_event_notifier_enabler` and
- * all event_notifiers related to this enabler.
- */
-int lttng_event_notifier_enabler_attach_capture_bytecode(
- struct lttng_event_notifier_enabler *event_notifier_enabler,
- struct lttng_ust_bytecode_node **bytecode)
- __attribute__((visibility("hidden")));
-
-/*
- * Attach exclusion list to `struct lttng_event_notifier_enabler` and all
- * event notifiers related to this enabler.
- */
-int lttng_event_notifier_enabler_attach_exclusion(
- struct lttng_event_notifier_enabler *event_notifier_enabler,
- struct lttng_ust_excluder_node **excluder)
- __attribute__((visibility("hidden")));
-
-void lttng_free_event_filter_runtime(struct lttng_ust_event_common *event)
- __attribute__((visibility("hidden")));
-
-/*
- * Connect the probe on all enablers matching this event description.
- * Called on library load.
- */
-int lttng_fix_pending_event_notifiers(void)
- __attribute__((visibility("hidden")));
-
-struct lttng_counter *lttng_ust_counter_create(
- const char *counter_transport_name,
- size_t number_dimensions, const struct lttng_counter_dimension *dimensions)
- __attribute__((visibility("hidden")));
-
-#ifdef HAVE_LINUX_PERF_EVENT_H
-
-int lttng_add_perf_counter_to_ctx(uint32_t type,
- uint64_t config,
- const char *name,
- struct lttng_ust_ctx **ctx)
- __attribute__((visibility("hidden")));
-
-int lttng_perf_counter_init(void)
- __attribute__((visibility("hidden")));
-
-void lttng_perf_counter_exit(void)
- __attribute__((visibility("hidden")));
-
-#else /* #ifdef HAVE_LINUX_PERF_EVENT_H */
-
-static inline
-int lttng_add_perf_counter_to_ctx(uint32_t type,
- uint64_t config,
- const char *name,
- struct lttng_ust_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 HAVE_LINUX_PERF_EVENT_H */
-
-int lttng_probes_get_event_list(struct lttng_ust_tracepoint_list *list)
- __attribute__((visibility("hidden")));
-
-void lttng_probes_prune_event_list(struct lttng_ust_tracepoint_list *list)
- __attribute__((visibility("hidden")));
-
-int lttng_probes_get_field_list(struct lttng_ust_field_list *list)
- __attribute__((visibility("hidden")));
-
-void lttng_probes_prune_field_list(struct lttng_ust_field_list *list)
- __attribute__((visibility("hidden")));
-
-struct lttng_ust_abi_tracepoint_iter *
- lttng_ust_tracepoint_list_get_iter_next(struct lttng_ust_tracepoint_list *list)
- __attribute__((visibility("hidden")));
-
-struct lttng_ust_abi_field_iter *
- lttng_ust_field_list_get_iter_next(struct lttng_ust_field_list *list)
- __attribute__((visibility("hidden")));
-
-struct lttng_ust_session *lttng_session_create(void)
- __attribute__((visibility("hidden")));
-
-int lttng_session_enable(struct lttng_ust_session *session)
- __attribute__((visibility("hidden")));
-
-int lttng_session_disable(struct lttng_ust_session *session)
- __attribute__((visibility("hidden")));
-
-int lttng_session_statedump(struct lttng_ust_session *session)
- __attribute__((visibility("hidden")));
-
-void lttng_session_destroy(struct lttng_ust_session *session)
- __attribute__((visibility("hidden")));
-
-/*
- * Called with ust lock held.
- */
-int lttng_session_active(void)
- __attribute__((visibility("hidden")));
-
-struct cds_list_head *lttng_get_sessions(void)
- __attribute__((visibility("hidden")));
-
-void lttng_handle_pending_statedump(void *owner)
- __attribute__((visibility("hidden")));
-
-int lttng_channel_enable(struct lttng_ust_channel_common *lttng_channel)
- __attribute__((visibility("hidden")));
-
-int lttng_channel_disable(struct lttng_ust_channel_common *lttng_channel)
- __attribute__((visibility("hidden")));
-
-void lttng_transport_register(struct lttng_transport *transport)
- __attribute__((visibility("hidden")));
-
-void lttng_transport_unregister(struct lttng_transport *transport)
- __attribute__((visibility("hidden")));
-
-/* This is ABI between liblttng-ust and liblttng-ust-ctl */
-struct lttng_transport *lttng_ust_transport_find(const char *name);
-
-/* This is ABI between liblttng-ust and liblttng-ust-dl */
-void lttng_ust_dl_update(void *ip);
-
-void lttng_probe_provider_unregister_events(const struct lttng_ust_probe_desc *desc)
- __attribute__((visibility("hidden")));
-
-int lttng_fix_pending_events(void)
- __attribute__((visibility("hidden")));
-
-struct cds_list_head *lttng_get_probe_list_head(void)
- __attribute__((visibility("hidden")));
-
-struct lttng_enum *lttng_ust_enum_get_from_desc(struct lttng_ust_session *session,
- const struct lttng_ust_enum_desc *enum_desc)
- __attribute__((visibility("hidden")));
-
-int lttng_abi_create_root_handle(void)
- __attribute__((visibility("hidden")));
-
-const struct lttng_ust_abi_objd_ops *lttng_ust_abi_objd_ops(int id)
- __attribute__((visibility("hidden")));
-
-int lttng_ust_abi_objd_unref(int id, int is_owner)
- __attribute__((visibility("hidden")));
-
-void lttng_ust_abi_exit(void)
- __attribute__((visibility("hidden")));
-
-void lttng_ust_abi_events_exit(void)
- __attribute__((visibility("hidden")));
-
-void lttng_ust_abi_objd_table_owner_cleanup(void *owner)
- __attribute__((visibility("hidden")));
-
-struct lttng_ust_channel_buffer *lttng_ust_alloc_channel_buffer(void)
- __attribute__((visibility("hidden")));
-
-void lttng_ust_free_channel_common(struct lttng_ust_channel_common *chan)
- __attribute__((visibility("hidden")));
-
-int lttng_ust_interpret_event_filter(struct lttng_ust_event_common *event,
- const char *interpreter_stack_data,
- void *filter_ctx)
- __attribute__((visibility("hidden")));
-
-int lttng_ust_session_uuid_validate(struct lttng_ust_session *session,
- unsigned char *uuid)
- __attribute__((visibility("hidden")));
-
-bool lttng_ust_validate_event_name(const struct lttng_ust_event_desc *desc)
- __attribute__((visibility("hidden")));
-
-void lttng_ust_format_event_name(const struct lttng_ust_event_desc *desc,
- char *name)
- __attribute__((visibility("hidden")));
-
-int lttng_ust_add_app_context_to_ctx_rcu(const char *name, struct lttng_ust_ctx **ctx)
- __attribute__((visibility("hidden")));
-
-int lttng_ust_context_set_provider_rcu(struct lttng_ust_ctx **_ctx,
- const char *name,
- size_t (*get_size)(void *priv, size_t offset),
- void (*record)(void *priv, struct lttng_ust_lib_ring_buffer_ctx *ctx,
- struct lttng_ust_channel_buffer *chan),
- void (*get_value)(void *priv, struct lttng_ust_ctx_value *value),
- void *priv)
- __attribute__((visibility("hidden")));
-
-void lttng_ust_context_set_session_provider(const char *name,
- size_t (*get_size)(void *priv, size_t offset),
- void (*record)(void *priv, struct lttng_ust_lib_ring_buffer_ctx *ctx,
- struct lttng_ust_channel_buffer *chan),
- void (*get_value)(void *priv, struct lttng_ust_ctx_value *value),
- void *priv)
- __attribute__((visibility("hidden")));
-
-#endif /* _LTTNG_UST_EVENTS_INTERNAL_H */
projects / lttng-ust.git / commitdiff
