-#ifndef _LTTNG_UST_EVENTS_H
-#define _LTTNG_UST_EVENTS_H
-
/*
- * lttng/ust-events.h
+ * SPDX-License-Identifier: MIT
*
- * Copyright 2010-2012 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
* Holds LTTng per-session event registry.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
*/
+#ifndef _LTTNG_UST_EVENTS_H
+#define _LTTNG_UST_EVENTS_H
+
#include <urcu/list.h>
#include <urcu/hlist.h>
#include <stddef.h>
#include <stdint.h>
-#include <lttng/ust-config.h>
#include <lttng/ust-abi.h>
#include <lttng/ust-tracer.h>
#include <lttng/ust-endian.h>
struct lttng_channel;
struct lttng_session;
struct lttng_ust_lib_ring_buffer_ctx;
-struct lttng_ust_context_app;
struct lttng_event_field;
+struct lttng_event_notifier;
+struct lttng_event_notifier_group;
/*
* Data structures used by tracepoint event declarations, and by the
* tracer. Those structures have padding for future extension.
*/
-/*
- * LTTng client type enumeration. Used by the consumer to map the
- * callbacks from its own address space.
- */
-enum lttng_client_types {
- 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,
-};
-
/* Type description */
/* Update the astract_types name table in lttng-types.c along with this enum */
enum lttng_ust_dynamic_type sel;
union {
int64_t s64;
+ uint64_t u64;
const char *str;
double d;
} u;
/* Data structures used by the tracer. */
-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.
+ * Bytecode interpreter return value masks.
*/
-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_event event_param;
- unsigned int enabled:1;
-};
-
-struct tp_list_entry {
- struct lttng_ust_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_field_iter field;
- struct cds_list_head head;
-};
-
-struct lttng_ust_field_list {
- struct tp_field_list_entry *iter;
- struct cds_list_head head;
-};
-
-struct ust_pending_probe;
-struct lttng_event;
-
-/*
- * Filter return value masks.
- */
-enum lttng_filter_ret {
- LTTNG_FILTER_DISCARD = 0,
- LTTNG_FILTER_RECORD_FLAG = (1ULL << 0),
+enum lttng_bytecode_interpreter_ret {
+ LTTNG_INTERPRETER_DISCARD = 0,
+ LTTNG_INTERPRETER_RECORD_FLAG = (1ULL << 0),
/* Other bits are kept for future use. */
};
+struct lttng_interpreter_output;
+
/*
* This structure is used in the probes. More specifically, the `filter` and
* `node` fields are explicity used in the probes. When modifying this
struct lttng_bytecode_runtime {
/* Associated bytecode */
struct lttng_ust_bytecode_node *bc;
- uint64_t (*filter)(void *interpreter_data,
- const char *interpreter_stack_data);
+ union {
+ uint64_t (*filter)(void *interpreter_data,
+ const char *interpreter_stack_data);
+ uint64_t (*capture)(void *interpreter_data,
+ const char *interpreter_stack_data,
+ struct lttng_interpreter_output *interpreter_output);
+ } interpreter_funcs;
int link_failed;
struct cds_list_head node; /* list of bytecode runtime in event */
/*
struct lttng_ctx **pctx;
};
-/*
- * 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 */
-};
-
/*
* lttng_event structure is referred to by the tracing fast path. It
* must be kept small.
* UST. Fields need to be only added at the end, never reordered, never
* removed.
*/
+
+struct lttng_ust_event_private;
+
struct lttng_event {
- /* LTTng-UST 2.0 starts here */
+ struct lttng_ust_event_private *priv; /* Private event interface */
+
unsigned int id;
- struct lttng_channel *chan;
int enabled;
- const struct lttng_event_desc *desc;
- void *_deprecated1;
- struct lttng_ctx *ctx;
- enum lttng_ust_instrumentation instrumentation;
- struct cds_list_head node; /* Event list in session */
- struct cds_list_head _deprecated2;
- void *_deprecated3;
- unsigned int _deprecated4:1;
-
- /* LTTng-UST 2.1 starts here */
+ int has_enablers_without_bytecode;
/* list of struct lttng_bytecode_runtime, sorted by seqnum */
struct cds_list_head filter_bytecode_runtime_head;
- int has_enablers_without_bytecode;
- /* 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_channel *chan;
+ struct lttng_ctx *ctx;
};
struct lttng_event_notifier {
uint64_t user_token;
+ uint64_t error_counter_index;
int enabled;
int registered; /* has reg'd tracepoint probe */
+ size_t num_captures; /* Needed to allocate the msgpack array. */
+ void (*notification_send)(struct lttng_event_notifier *event_notifier,
+ const char *stack_data);
struct cds_list_head filter_bytecode_runtime_head;
+ struct cds_list_head capture_bytecode_runtime_head;
int has_enablers_without_bytecode;
struct cds_list_head enablers_ref_head;
const struct lttng_event_desc *desc;
const int *stream_fds, int nr_stream_fds,
int64_t blocking_timeout);
void (*channel_destroy)(struct lttng_channel *chan);
- union {
- void *_deprecated1;
- /*
- * has_strcpy is needed by probe providers version 1.0 to
- * dynamically detect whether the LTTng-UST tracepoint
- * provider ABI implements event_strcpy. Starting from
- * probe providers version 2.0, the check is not needed,
- * but backward compatibility is provided for older versions.
- */
- 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);
*/
size_t (*packet_avail_size)(struct channel *chan,
struct lttng_ust_shm_handle *handle);
- //wait_queue_head_t *(*get_reader_wait_queue)(struct channel *chan);
- //wait_queue_head_t *(*get_hp_wait_queue)(struct channel *chan);
int (*is_finalized)(struct channel *chan);
int (*is_disabled)(struct channel *chan);
int (*flush_buffer)(struct channel *chan, struct lttng_ust_shm_handle *handle);
/* Event ID management */
struct lttng_session *session;
int objd; /* Object associated to channel */
- unsigned int _deprecated1;
- unsigned int _deprecated2;
struct cds_list_head node; /* Channel list in session */
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 _deprecated3:1;
/* Channel ID */
unsigned int id;
int tstate:1; /* Transient enable state */
};
+struct lttng_counter_dimension;
+
+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);
+};
+
#define LTTNG_UST_STACK_CTX_PADDING 32
struct lttng_stack_ctx {
struct lttng_event *event;
int active; /* Is trace session active ? */
int been_active; /* Been active ? */
int objd; /* Object associated */
- void *_deprecated1;
struct cds_list_head chan_head; /* Channel list head */
struct cds_list_head events_head; /* list of events */
- struct cds_list_head _deprecated2;
struct cds_list_head node; /* Session list */
- int _deprecated3;
- unsigned int _deprecated4:1;
/* New UST 2.1 */
/* List of enablers */
struct lttng_ctx *ctx; /* contexts for filters. */
};
-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_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);
-
-void lttng_event_notifier_notification_send(
- struct lttng_event_notifier *event_notifier);
-
-struct lttng_channel *lttng_channel_create(struct lttng_session *session,
- const char *transport_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);
-
-int lttng_channel_enable(struct lttng_channel *channel);
-int lttng_channel_disable(struct lttng_channel *channel);
-
-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);
-
-void synchronize_trace(void);
-
int lttng_probe_register(struct lttng_probe_desc *desc);
void lttng_probe_unregister(struct lttng_probe_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_vtid_to_ctx(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);
-int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_time_ns_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_vuid_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_veuid_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_vsuid_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_vgid_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_vegid_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_vsgid_to_ctx(struct lttng_ctx **ctx);
-void lttng_context_vtid_reset(void);
-void lttng_context_vpid_reset(void);
-void lttng_context_procname_reset(void);
-void lttng_context_cgroup_ns_reset(void);
-void lttng_context_ipc_ns_reset(void);
-void lttng_context_mnt_ns_reset(void);
-void lttng_context_net_ns_reset(void);
-void lttng_context_pid_ns_reset(void);
-void lttng_context_time_ns_reset(void);
-void lttng_context_user_ns_reset(void);
-void lttng_context_uts_ns_reset(void);
-void lttng_context_vuid_reset(void);
-void lttng_context_veuid_reset(void);
-void lttng_context_vsuid_reset(void);
-void lttng_context_vgid_reset(void);
-void lttng_context_vegid_reset(void);
-void lttng_context_vsgid_reset(void);
-
-#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;
+/*
+ * Can be used by applications that change their procname to clear the ust cached value.
+ */
+void lttng_context_procname_reset(void);
struct lttng_transport *lttng_transport_find(const char *name);
-int lttng_probes_get_event_list(struct lttng_ust_tracepoint_list *list);
-void lttng_probes_prune_event_list(struct lttng_ust_tracepoint_list *list);
-struct lttng_ust_tracepoint_iter *
- lttng_ust_tracepoint_list_get_iter_next(struct lttng_ust_tracepoint_list *list);
-int lttng_probes_get_field_list(struct lttng_ust_field_list *list);
-void lttng_probes_prune_field_list(struct lttng_ust_field_list *list);
-struct lttng_ust_field_iter *
- lttng_ust_field_list_get_iter_next(struct lttng_ust_field_list *list);
-
-void lttng_free_event_filter_runtime(struct lttng_event *event);
-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_from_desc(struct lttng_session *session,
- const struct lttng_enum_desc *enum_desc);
-
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;
-struct lttng_ust_filter_bytecode_node;
-struct lttng_ust_excluder_node;
-void lttng_context_init(void);
-void lttng_context_exit(void);
-void lttng_filter_event_link_bytecode(struct lttng_event *event);
-struct lttng_enabler *lttng_enabler_create(
- enum lttng_enabler_format_type format_type,
- struct lttng_ust_event *event_param,
- struct lttng_channel *chan);
-int lttng_enabler_enable(struct lttng_enabler *enabler);
-int lttng_enabler_disable(struct lttng_enabler *enabler);
-int lttng_enabler_attach_bytecode(struct lttng_enabler *enabler,
- 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);
-void lttng_enabler_event_link_bytecode(struct lttng_event *event,
- struct lttng_enabler *enabler);
#ifdef __cplusplus
}