X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=include%2Flttng%2Fust-events.h;h=019b0ebb02af5512c893cfe72147963eec88d3cb;hb=35ac38cb4cc188253c600766882b7a833f5a81ee;hp=e755e0c67a8aa45ce879856bce18f13782e08de6;hpb=74d81a6cca2cd4a7718bba9368f382f9f2fbba84;p=lttng-ust.git

diff --git a/include/lttng/ust-events.h b/include/lttng/ust-events.h
index e755e0c6..019b0ebb 100644
--- a/include/lttng/ust-events.h
+++ b/include/lttng/ust-events.h
@@ -30,16 +30,35 @@
 #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
@@ -54,6 +73,8 @@ 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,
 };
 
@@ -67,6 +88,8 @@ enum lttng_abstract_types {
 	atype_sequence,
 	atype_string,
 	atype_float,
+	atype_dynamic,
+	atype_struct,
 	NR_ABSTRACT_TYPES,
 };
 
@@ -78,24 +101,44 @@ enum lttng_string_encodings {
 	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,		\
+				}				\
+			}					\
 		},						\
 	}							\
 
@@ -121,14 +164,20 @@ struct lttng_integer_type {
 
 #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,	\
+				}				\
+			}					\
 		},						\
 	}							\
 
@@ -145,7 +194,8 @@ struct lttng_float_type {
 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;
@@ -174,16 +224,19 @@ struct lttng_type {
 			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];
 };
 
@@ -203,24 +256,56 @@ struct lttng_event_field {
 	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];
 };
 
@@ -241,19 +326,23 @@ struct lttng_event_desc {
 	} 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,
 };
 
@@ -266,6 +355,8 @@ struct lttng_enabler {
 
 	/* 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;
@@ -307,6 +398,15 @@ struct lttng_ust_filter_bytecode_node {
 	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.
  */
@@ -322,6 +422,7 @@ struct lttng_bytecode_runtime {
 	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;
 };
 
 /*
@@ -349,12 +450,10 @@ struct lttng_event {
 	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 */
@@ -363,6 +462,15 @@ struct lttng_event {
 	/* 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;
@@ -379,8 +487,16 @@ struct lttng_channel_ops {
 			size_t subbuf_size, size_t num_subbuf,
 			unsigned int switch_timer_interval,
 			unsigned int read_timer_interval,
-			unsigned char *uuid);
+			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);
@@ -398,6 +514,8 @@ struct lttng_channel_ops {
 	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);
 };
 
 /*
@@ -418,18 +536,27 @@ struct lttng_channel {
 	/* 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 */
 	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 */
 	unsigned int id;
 	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		12
@@ -439,6 +566,13 @@ 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
@@ -448,18 +582,28 @@ struct lttng_session {
 	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 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 {
@@ -472,6 +616,7 @@ struct lttng_transport {
 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,
@@ -496,9 +641,13 @@ 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);
 
 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);
@@ -507,11 +656,14 @@ void synchronize_trace(void);
 
 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);
+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);
@@ -519,12 +671,42 @@ 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);
 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);
 
@@ -544,5 +726,24 @@ 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(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 */