nobase_include_HEADERS = \
ust/marker.h \
ust/tracepoint.h \
- ust/tracepoint_event.h \
- ust/probe.h \
+ ust/tracepoint-event.h \
+ ust/lttng-tracepoint-event.h \
+ ust/lttng-tracepoint-event-reset.h \
+ ust/lttng-events.h \
ust/version.h \
ust/lttng-ust-abi.h \
ust/ringbuffer-abi.h
--- /dev/null
+#ifndef _UST_LTTNG_EVENTS_H
+#define _UST_LTTNG_EVENTS_H
+
+/*
+ * ust/lttng-events.h
+ *
+ * Copyright 2010 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * Holds LTTng per-session event registry.
+ *
+ * Dual LGPL v2.1/GPL v2 license.
+ */
+
+#include <urcu/list.h>
+#include <uuid/uuid.h>
+#include <stdint.h>
+#include <ust/lttng-ust-abi.h>
+
+#undef is_signed_type
+#define is_signed_type(type) (((type)(-1)) < 0)
+
+struct ltt_channel;
+struct ltt_session;
+struct lib_ring_buffer_ctx;
+
+/* Type description */
+
+/* Update the astract_types name table in lttng-types.c along with this enum */
+enum abstract_types {
+ atype_integer,
+ atype_enum,
+ atype_array,
+ atype_sequence,
+ atype_string,
+ NR_ABSTRACT_TYPES,
+};
+
+/* Update the string_encodings name table in lttng-types.c along with this enum */
+enum lttng_string_encodings {
+ lttng_encode_none = 0,
+ lttng_encode_UTF8 = 1,
+ lttng_encode_ASCII = 2,
+ NR_STRING_ENCODINGS,
+};
+
+struct lttng_enum_entry {
+ unsigned long long start, end; /* start and end are inclusive */
+ const char *string;
+};
+
+#define __type_integer(_type, _byte_order, _base, _encoding) \
+ { \
+ .atype = atype_integer, \
+ .u.basic.integer = \
+ { \
+ .size = sizeof(_type) * CHAR_BIT, \
+ .alignment = ltt_alignof(_type) * CHAR_BIT, \
+ .signedness = is_signed_type(_type), \
+ .reverse_byte_order = _byte_order != __BYTE_ORDER, \
+ .base = _base, \
+ .encoding = lttng_encode_##_encoding, \
+ }, \
+ } \
+
+struct lttng_integer_type {
+ unsigned int size; /* in bits */
+ unsigned short alignment; /* in bits */
+ unsigned int signedness:1;
+ unsigned int reverse_byte_order:1;
+ unsigned int base; /* 2, 8, 10, 16, for pretty print */
+ enum lttng_string_encodings encoding;
+};
+
+union _lttng_basic_type {
+ struct lttng_integer_type integer;
+ struct {
+ const char *name;
+ } enumeration;
+ struct {
+ enum lttng_string_encodings encoding;
+ } string;
+};
+
+struct lttng_basic_type {
+ enum abstract_types atype;
+ union {
+ union _lttng_basic_type basic;
+ } u;
+};
+
+struct lttng_type {
+ enum abstract_types atype;
+ union {
+ union _lttng_basic_type basic;
+ struct {
+ struct lttng_basic_type elem_type;
+ unsigned int length; /* num. elems. */
+ } array;
+ struct {
+ struct lttng_basic_type length_type;
+ struct lttng_basic_type elem_type;
+ } sequence;
+ } u;
+};
+
+struct lttng_enum {
+ const char *name;
+ struct lttng_type container_type;
+ const struct lttng_enum_entry *entries;
+ unsigned int len;
+};
+
+/* Event field description */
+
+struct lttng_event_field {
+ const char *name;
+ struct lttng_type type;
+};
+
+struct lttng_ctx_field {
+ struct lttng_event_field event_field;
+ size_t (*get_size)(size_t offset);
+ void (*record)(struct lttng_ctx_field *field,
+ struct lib_ring_buffer_ctx *ctx,
+ struct ltt_channel *chan);
+ union {
+ } u;
+ void (*destroy)(struct lttng_ctx_field *field);
+};
+
+struct lttng_ctx {
+ struct lttng_ctx_field *fields;
+ unsigned int nr_fields;
+ unsigned int allocated_fields;
+};
+
+struct lttng_event_desc {
+ const char *name;
+ void *probe_callback;
+ const struct lttng_event_ctx *ctx; /* context */
+ const struct lttng_event_field *fields; /* event payload */
+ unsigned int nr_fields;
+};
+
+struct lttng_probe_desc {
+ const struct lttng_event_desc *event_desc;
+ unsigned int nr_events;
+ struct cds_list_head head; /* chain registered probes */
+};
+
+/*
+ * ltt_event structure is referred to by the tracing fast path. It must be
+ * kept small.
+ */
+struct ltt_event {
+ unsigned int id;
+ struct ltt_channel *chan;
+ int enabled;
+ const struct lttng_event_desc *desc;
+ void *filter;
+ struct lttng_ctx *ctx;
+ enum lttng_ust_instrumentation instrumentation;
+ union {
+ } u;
+ struct cds_list_head list; /* Event list */
+ int metadata_dumped:1;
+};
+
+struct ltt_channel_ops {
+ struct channel *(*channel_create)(const char *name,
+ struct ltt_channel *ltt_chan,
+ void *buf_addr,
+ size_t subbuf_size, size_t num_subbuf,
+ unsigned int switch_timer_interval,
+ unsigned int read_timer_interval,
+ int *shmid);
+ void (*channel_destroy)(struct channel *chan);
+ struct lib_ring_buffer *(*buffer_read_open)(struct channel *chan);
+ void (*buffer_read_close)(struct lib_ring_buffer *buf);
+ int (*event_reserve)(struct lib_ring_buffer_ctx *ctx,
+ uint32_t event_id);
+ void (*event_commit)(struct lib_ring_buffer_ctx *ctx);
+ void (*event_write)(struct lib_ring_buffer_ctx *ctx, const void *src,
+ size_t len);
+ /*
+ * packet_avail_size returns the available size in the current
+ * packet. Note that the size returned is only a hint, since it
+ * may change due to concurrent writes.
+ */
+ size_t (*packet_avail_size)(struct channel *chan);
+ //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);
+};
+
+struct ltt_channel {
+ unsigned int id;
+ struct channel *chan; /* Channel buffers */
+ int enabled;
+ struct lttng_ctx *ctx;
+ /* Event ID management */
+ struct ltt_session *session;
+ int objd; /* Object associated to channel */
+ unsigned int free_event_id; /* Next event ID to allocate */
+ struct cds_list_head list; /* Channel list */
+ struct ltt_channel_ops *ops;
+ int header_type; /* 0: unset, 1: compact, 2: large */
+ int shmid; /* shared memory ID */
+ int metadata_dumped:1;
+};
+
+struct ltt_session {
+ int active; /* Is trace session active ? */
+ int been_active; /* Has trace session been active ? */
+ int objd; /* Object associated to session */
+ struct ltt_channel *metadata; /* Metadata channel */
+ struct cds_list_head chan; /* Channel list head */
+ struct cds_list_head events; /* Event list head */
+ struct cds_list_head list; /* Session list */
+ unsigned int free_chan_id; /* Next chan ID to allocate */
+ uuid_t uuid; /* Trace session unique ID */
+ int metadata_dumped:1;
+};
+
+struct ltt_transport {
+ char *name;
+ struct cds_list_head node;
+ struct ltt_channel_ops ops;
+};
+
+struct ltt_session *ltt_session_create(void);
+int ltt_session_enable(struct ltt_session *session);
+int ltt_session_disable(struct ltt_session *session);
+void ltt_session_destroy(struct ltt_session *session);
+
+struct ltt_channel *ltt_channel_create(struct ltt_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);
+struct ltt_channel *ltt_global_channel_create(struct ltt_session *session,
+ int overwrite, void *buf_addr,
+ size_t subbuf_size, size_t num_subbuf,
+ unsigned int switch_timer_interval,
+ unsigned int read_timer_interval);
+
+struct ltt_event *ltt_event_create(struct ltt_channel *chan,
+ struct lttng_ust_event *event_param,
+ void *filter);
+
+int ltt_channel_enable(struct ltt_channel *channel);
+int ltt_channel_disable(struct ltt_channel *channel);
+int ltt_event_enable(struct ltt_event *event);
+int ltt_event_disable(struct ltt_event *event);
+
+void ltt_transport_register(struct ltt_transport *transport);
+void ltt_transport_unregister(struct ltt_transport *transport);
+
+void synchronize_trace(void);
+//int ltt_debugfs_abi_init(void);
+//void ltt_debugfs_abi_exit(void);
+
+int ltt_probe_register(struct lttng_probe_desc *desc);
+void ltt_probe_unregister(struct lttng_probe_desc *desc);
+const struct lttng_event_desc *ltt_event_get(const char *name);
+void ltt_event_put(const struct lttng_event_desc *desc);
+int ltt_probes_init(void);
+void ltt_probes_exit(void);
+struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx);
+void lttng_remove_context_field(struct lttng_ctx **ctx,
+ struct lttng_ctx_field *field);
+void lttng_destroy_context(struct lttng_ctx *ctx);
+int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx);
+
+//extern const struct file_operations lttng_tracepoint_list_fops;
+
+#endif /* _UST_LTTNG_EVENTS_H */
--- /dev/null
+/*
+ * lttng-tracepoint-events-reset.h
+ *
+ * Copyright (C) 2010-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * Dual LGPL v2.1/GPL v2 license.
+ */
+
+/* Reset macros used within TRACE_EVENT to "nothing" */
+
+#undef ctf_integer_ext
+#define ctf_integer_ext(_type, _item, _src, _byte_order, _base)
+
+#undef ctf_array_encoded
+#define ctf_array_encoded(_type, _item, _src, _length, _encoding)
+
+#undef ctf_sequence_encoded
+#define ctf_sequence_encoded(_type, _item, _src, _length_type, \
+ _src_length, _encoding)
+
+#undef ctf_string
+#define ctf_string(_item, _src)
+
+#undef TP_PROTO
+#define TP_PROTO(args...)
+
+#undef TP_ARGS
+#define TP_ARGS(args...)
+
+#undef TP_FIELDS
+#define TP_FIELDS(args...)
+
+#undef TRACEPOINT_EVENT_CLASS
+#define TRACEPOINT_EVENT_CLASS(_name, _proto, _args, _fields)
+
+#undef TRACEPOINT_EVENT_INSTANCE
+#define TRACEPOINT_EVENT_INSTANCE(_template, _name, _proto, _args)
--- /dev/null
+/*
+ * Copyright (C) 2009 Steven Rostedt <srostedt@redhat.com>
+ * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdio.h>
+#include <ust/lttng-events.h>
+
+/*
+ * Macro declarations used for all stages.
+ */
+
+#undef ctf_integer
+#define ctf_integer(_type, _item, _src) \
+ ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10)
+
+#undef ctf_integer_hex
+#define ctf_integer_hex(_type, _item, _src) \
+ ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 16)
+
+#undef ctf_integer_network
+#define ctf_integer_network(_type, _item, _src) \
+ ctf_integer_ext(_type, _item, _src, BIG_ENDIAN, 10)
+
+#undef ctf_integer_network_hex
+#define ctf_integer_network_hex(_type, _item, _src) \
+ ctf_integer_ext(_type, _item, _src, BIG_ENDIAN, 16)
+
+#undef ctf_array
+#define ctf_array(_type, _item, _src, _length) \
+ ctf_array_encoded(_type, _item, _src, _length, none)
+
+#undef ctf_array_text
+#define ctf_array_text(_type, _item, _src, _length) \
+ ctf_array_encoded(_type, _item, _src, _length, UTF8)
+
+#undef ctf_sequence
+#define ctf_sequence(_type, _item, _src, _length_type, _src_length) \
+ ctf_sequence_encoded(_type, _item, _src, \
+ _length_type, _src_length, none)
+
+#undef ctf_sequence_text
+#define ctf_sequence_text(_type, _item, _src, _length_type, _src_length) \
+ ctf_sequence_encoded(_type, _item, _src, \
+ _length_type, _src_length, UTF8)
+
+/* ctf_string is redefined at each step */
+
+/*
+ * TRACEPOINT_EVENT_CLASS can be used to add a generic function handlers
+ * for events. That is, if all events have the same parameters and just
+ * have distinct trace points. Each tracepoint can be defined with
+ * TRACEPOINT_EVENT_INSTANCE and that will map the
+ * TRACEPOINT_EVENT_CLASS to the tracepoint.
+ *
+ * TRACEPOINT_EVENT is a one to one mapping between tracepoint and
+ * template.
+ */
+
+#undef TRACEPOINT_EVENT
+#define TRACEPOINT_EVENT(name, proto, args, fields) \
+ TRACEPOINT_EVENT_CLASS(name, \
+ TP_PARAMS(proto), \
+ TP_PARAMS(args), \
+ TP_PARAMS(fields)) \
+ TRACEPOINT_EVENT_INSTANCE(name, name, TP_PARAMS(proto), TP_PARAMS(args))
+
+/*
+ * Stage 1 of the trace events.
+ *
+ * Create event field type metadata section.
+ * Each event produce an array of fields.
+ */
+
+/* Reset all macros within TRACE_EVENT */
+#include "lttng-tracepoint-events-reset.h"
+
+/* Named field types must be defined in lttng-types.h */
+
+#undef ctf_integer_ext
+#define ctf_integer_ext(_type, _item, _src, _byte_order, _base) \
+ { \
+ .name = #_item, \
+ .type = __type_integer(_type, _byte_order, _base, none),\
+ },
+
+#undef ctf_array_encoded
+#define ctf_array_encoded(_type, _item, _src, _length, _encoding) \
+ { \
+ .name = #_item, \
+ .type = \
+ { \
+ .atype = atype_array, \
+ .u.array = \
+ { \
+ .length = _length, \
+ .elem_type = __type_integer(_type, BYTE_ORDER, 10, _encoding), \
+ }, \
+ }, \
+ },
+
+#undef ctf_sequence_encoded
+#define ctf_sequence_encoded(_type, _item, _src, \
+ _length_type, _src_length, _encoding) \
+ { \
+ .name = #_item, \
+ .type = \
+ { \
+ .atype = atype_sequence, \
+ .u.sequence = \
+ { \
+ .length_type = __type_integer(_length_type, BYTE_ORDER, 10, none), \
+ .elem_type = __type_integer(_type, BYTE_ORDER, 10, _encoding), \
+ }, \
+ }, \
+ },
+
+#undef ctf_string
+#define ctf_string(_item, _src) \
+ { \
+ .name = #_item, \
+ .type = \
+ { \
+ .atype = atype_string, \
+ .u.basic.string.encoding = lttng_encode_UTF8, \
+ }, \
+ },
+
+#undef TP_FIELDS
+#define TP_FIELDS(args...) args /* Only one used in this phase */
+
+#undef TRACEPOINT_EVENT_CLASS
+#define TRACEPOINT_EVENT_CLASS(_name, _proto, _args, _fields) \
+ static const struct lttng_event_field __event_fields___##_name[] = { \
+ _fields \
+ };
+
+#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
+
+/*
+ * Stage 2 of the trace events.
+ *
+ * Create probe callback prototypes.
+ */
+
+/* Reset all macros within TRACE_EVENT */
+#include "lttng-tracepoint-events-reset.h"
+
+#undef TP_PROTO
+#define TP_PROTO(args...) args
+
+#undef TRACEPOINT_EVENT_CLASS
+#define TRACEPOINT_EVENT_CLASS(_name, _proto, _args, _fields) \
+static void __event_probe__##_name(void *__data, _proto);
+
+#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
+
+/*
+ * Stage 3 of the trace events.
+ *
+ * Create an array of events.
+ */
+
+/* Named field types must be defined in lttng-types.h */
+
+/* Reset all macros within TRACE_EVENT */
+#include "lttng-tracepoint-events-reset.h"
+
+#undef TRACEPOINT_EVENT_INSTANCE
+#define TRACEPOINT_EVENT_INSTANCE(_template, _name, _proto, _args) \
+ { \
+ .fields = __event_fields___##_template, \
+ .name = #_name, \
+ .probe_callback = (void *) &__event_probe__##_template,\
+ .nr_fields = ARRAY_SIZE(__event_fields___##_template), \
+ },
+
+#define TP_ID1(_token, _system) _token##_system
+#define TP_ID(_token, _system) TP_ID1(_token, _system)
+
+static const struct lttng_event_desc TP_ID(__event_desc___, TRACE_SYSTEM)[] = {
+#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
+};
+
+#undef TP_ID1
+#undef TP_ID
+
+
+/*
+ * Stage 4 of the trace events.
+ *
+ * Create a toplevel descriptor for the whole probe.
+ */
+
+#define TP_ID1(_token, _system) _token##_system
+#define TP_ID(_token, _system) TP_ID1(_token, _system)
+
+/* non-const because list head will be modified when registered. */
+static struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = {
+ .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM),
+ .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)),
+};
+
+#undef TP_ID1
+#undef TP_ID
+
+/*
+ * Stage 5 of the trace events.
+ *
+ * Create static inline function that calculates event size.
+ */
+
+/* Reset all macros within TRACE_EVENT */
+#include "lttng-tracepoint-events-reset.h"
+
+/* Named field types must be defined in lttng-types.h */
+
+#undef ctf_integer_ext
+#define ctf_integer_ext(_type, _item, _src, _byte_order, _base) \
+ __event_len += lib_ring_buffer_align(__event_len, ltt_alignof(_type)); \
+ __event_len += sizeof(_type);
+
+#undef ctf_array_encoded
+#define ctf_array_encoded(_type, _item, _src, _length) \
+ __event_len += lib_ring_buffer_align(__event_len, ltt_alignof(_type)); \
+ __event_len += sizeof(_type) * (_length);
+
+#undef ctf_sequence_encoded
+#define ctf_sequence_encoded(_type, _item, _src, _length_type, \
+ _src_length, _encoding) \
+ __event_len += lib_ring_buffer_align(__event_len, ltt_alignof(_length_type)); \
+ __event_len += sizeof(_length_type); \
+ __event_len += lib_ring_buffer_align(__event_len, ltt_alignof(_type)); \
+ __dynamic_len[__dynamic_len_idx] = (_length); \
+ __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \
+ __dynamic_len_idx++;
+
+#undef ctf_string
+#define ctf_string(_item, _src) \
+ __event_len += __dynamic_len[__dynamic_len_idx++] = strlen(_src) + 1;
+
+#undef TP_PROTO
+#define TP_PROTO(args...) args
+
+#undef TP_FIELDS
+#define TP_FIELDS(args...) args
+
+#undef TRACEPOINT_EVENT_CLASS
+#define TRACEPOINT_EVENT_CLASS(_name, _proto, _args, _fields) \
+static inline size_t __event_get_size__##_name(size_t *__dynamic_len, _proto) \
+{ \
+ size_t __event_len = 0; \
+ unsigned int __dynamic_len_idx = 0; \
+ \
+ if (0) \
+ (void) __dynamic_len_idx; /* don't warn if unused */ \
+ _fields \
+ return __event_len; \
+}
+
+#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
+
+/*
+ * Stage 6 of the trace events.
+ *
+ * Create static inline function that calculates event payload alignment.
+ */
+
+/* Reset all macros within TRACE_EVENT */
+#include "lttng-tracepoint-events-reset.h"
+
+/* Named field types must be defined in lttng-types.h */
+
+#undef ctf_integer_ext
+#define ctf_integer_ext(_type, _item, _src, _byte_order, _base) \
+ __event_align = max_t(size_t, __event_align, ltt_alignof(_type));
+
+#undef ctf_array_encoded
+#define ctf_array_encoded(_type, _item, _src, _length) \
+ __event_align = max_t(size_t, __event_align, ltt_alignof(_type));
+
+#undef ctf_sequence_encoded
+#define ctf_sequence_encoded(_type, _item, _src, _length_type, \
+ _src_length, _encoding) \
+ __event_align = max_t(size_t, __event_align, ltt_alignof(_length_type)); \
+ __event_align = max_t(size_t, __event_align, ltt_alignof(_type));
+
+#undef ctf_string
+#define ctf_string(_item, _src)
+
+#undef TP_PROTO
+#define TP_PROTO(args...) args
+
+#undef TP_FIELDS
+#define TP_FIELDS(args...) args
+
+#undef TRACEPOINT_EVENT_CLASS
+#define TRACEPOINT_EVENT_CLASS(_name, _proto, _args, _fields) \
+static inline size_t __event_get_align__##_name(_proto) \
+{ \
+ size_t __event_align = 1; \
+ _fields \
+ return __event_align; \
+}
+
+#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
+
+
+/*
+ * Stage 7 of the trace events.
+ *
+ * Create the probe function : call even size calculation and write event data
+ * into the buffer.
+ *
+ * We use both the field and assignment macros to write the fields in the order
+ * defined in the field declaration. The field declarations control the
+ * execution order, jumping to the appropriate assignment block.
+ */
+
+/* Reset all macros within TRACE_EVENT */
+#include "lttng-tracepoint-events-reset.h"
+
+#undef ctf_integer_ext
+#define ctf_integer_ext(_type, _item, _src, _byte_order, _base) \
+ { \
+ _type __tmp = (_src); \
+ lib_ring_buffer_align_ctx(&ctx, ltt_alignof(__tmp)); \
+ __chan->ops->event_write(&ctx, &__tmp, sizeof(__tmp)); \
+ }
+
+#undef ctf_array_encoded
+#define ctf_array_encoded(_type, _item, _src, _length) \
+ lib_ring_buffer_align_ctx(&ctx, ltt_alignof(_type)); \
+ __chan->ops->event_write(&ctx, _src, _length);
+
+#undef ctf_sequence_encoded
+#define ctf_sequence_encoded(_type, _item, _src, _length_type, \
+ _src_length, _encoding) \
+ { \
+ _length_type __tmpl = __dynamic_len[__dynamic_len_idx]; \
+ lib_ring_buffer_align_ctx(&ctx, ltt_alignof(_length_type)); \
+ __chan->ops->event_write(&ctx, &__tmpl, sizeof(_length_type)); \
+ } \
+ lib_ring_buffer_align_ctx(&ctx, ltt_alignof(_type)); \
+ __chan->ops->event_write(&ctx, _src, \
+ sizeof(_type) * __get_sequence_len(dest));
+
+#undef ctf_string
+#define ctf_string(_item, _src) \
+ tp_memcpy(dest, _src, __get_sequence_len(dest))
+
+/* Beware: this get len actually consumes the len value */
+#undef __get_sequence_len
+#define __get_sequence_len(field) __dynamic_len[__dynamic_len_idx++]
+
+#undef TP_PROTO
+#define TP_PROTO(args...) args
+
+#undef TP_ARGS
+#define TP_ARGS(args...) args
+
+#undef TP_FIELDS
+#define TP_FIELDS(args...) args
+
+#undef TRACEPOINT_EVENT_CLASS
+#define TRACEPOINT_EVENT_CLASS(_name, _proto, _args, _fields) \
+static void __event_probe__##_name(void *__data, _proto) \
+{ \
+ struct ltt_event *__event = __data; \
+ struct ltt_channel *__chan = __event->chan; \
+ struct lib_ring_buffer_ctx ctx; \
+ size_t __event_len, __event_align; \
+ size_t __dynamic_len_idx = 0; \
+ size_t __dynamic_len[ARRAY_SIZE(__event_fields___##_name)]; \
+ int __ret; \
+ \
+ if (0) \
+ (void) __dynamic_len_idx; /* don't warn if unused */ \
+ if (unlikely(!ACCESS_ONCE(__chan->session->active))) \
+ return; \
+ if (unlikely(!ACCESS_ONCE(__chan->enabled))) \
+ return; \
+ if (unlikely(!ACCESS_ONCE(__event->enabled))) \
+ return; \
+ __event_len = __event_get_size__##_name(__dynamic_len, _args); \
+ __event_align = __event_get_align__##_name(_args); \
+ lib_ring_buffer_ctx_init(&ctx, __chan->chan, __event, __event_len, \
+ __event_align, -1); \
+ __ret = __chan->ops->event_reserve(&ctx, __event->id); \
+ if (__ret < 0) \
+ return; \
+ _fields \
+ __chan->ops->event_commit(&ctx); \
+}
+
+#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
+
+/*
+ * Stage 8 of the trace events.
+ *
+ * Register/unregister probes at module load/unload.
+ */
+
+/* Reset all macros within TRACE_EVENT */
+#include "lttng-tracepoint-events-reset.h"
+
+#define TP_ID1(_token, _system) _token##_system
+#define TP_ID(_token, _system) TP_ID1(_token, _system)
+
+static void __attribute__((constructor))
+TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void)
+{
+ int ret;
+
+ ret = ltt_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM));
+ assert(!ret);
+}
+
+static void __attribute__((destructor))
+TP_ID(__lttng_events_exit__, TRACE_SYSTEM)(void)
+{
+ ltt_probe_unregister(&TP_ID(__probe_desc___, TRACE_SYSTEM));
+}
+
+#undef TP_ID1
+#undef TP_ID
* Dual LGPL v2.1/GPL v2 license.
*/
+#include <stdint.h>
+
#define LTTNG_UST_SYM_NAME_LEN 128
enum lttng_ust_instrumentation {
+++ /dev/null
-/*
- * Copyright (C) 2009 Steven Rostedt <srostedt@redhat.com>
- * Copyright (C) 2010 Nils Carlson <nils.carlson@ericsson.com>
- * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-/*
- * This whole file is currently a dummy.
- */
-
-#include <stdio.h>
-
-#undef TRACEPOINT_EVENT
-#define TRACEPOINT_EVENT(name, proto, args, fields) \
- TRACEPOINT_EVENT_CLASS(name, \
- TP_PARAMS(proto), \
- TP_PARAMS(args), \
- TP_PARAMS(fields)); \
- TRACEPOINT_EVENT_INSTANCE(name, name, TP_PARAMS(proto), \
- TP_PARAMS(args));
-
-#undef TRACEPOINT_EVENT_NOARGS
-#define TRACEPOINT_EVENT_NOARGS(name, fields) \
- TRACEPOINT_EVENT_CLASS_NOARGS(name, \
- TP_PARAMS(fields)); \
- TRACEPOINT_EVENT_INSTANCE_NOARGS(name, name);
-
-#undef tp_field
-#define tp_field(type, item, src) type item;
-
-#undef TP_FIELDS
-#define TP_FIELDS(args...) args
-
-#undef TRACEPOINT_EVENT_INSTANCE
-#define TRACEPOINT_EVENT_INSTANCE(template, name, proto, args)
-
-#undef TRACEPOINT_EVENT_INSTANCE_NOARGS
-#define TRACEPOINT_EVENT_INSTANCE_NOARGS(template, name)
-
-#undef TRACEPOINT_EVENT_CLASS
-#define TRACEPOINT_EVENT_CLASS(name, proto, args, fields) \
- struct trace_raw_##name { \
- fields \
- }; \
- static void trace_printf_##name(void *dummy, proto) \
- { \
- } \
- struct trace_event __event_##name = { \
- __tpstrtab_##name, \
- }; \
- static struct trace_event * const __event_ptrs_##name \
- __attribute__((used, section("__trace_events_ptrs"))) = \
- &__event_##name; \
- \
- static void __attribute__((constructor)) init_##name() \
- { \
- void *dummy = NULL; \
- __register_tracepoint(name, trace_printf_##name, dummy);\
- }
-
-#undef TRACEPOINT_EVENT_CLASS_NOARGS
-#define TRACEPOINT_EVENT_CLASS_NOARGS(name, fields) \
- struct trace_raw_##name { \
- fields \
- }; \
- static void trace_printf_##name(void *dummy) \
- { \
- } \
- struct trace_event __event_##name = { \
- __tpstrtab_##name, \
- }; \
- static struct trace_event * const __event_ptrs_##name \
- __attribute__((used, section("__trace_events_ptrs"))) = \
- &__event_##name; \
- \
- static void __attribute__((constructor)) init_##name() \
- { \
- void *dummy = NULL; \
- __register_tracepoint(name, trace_printf_##name, dummy);\
- }
-
-#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
--- /dev/null
+/*
+ * Copyright (C) 2009 Steven Rostedt <srostedt@redhat.com>
+ * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ *
+ * Trace files that want to automate creationg of all tracepoints defined
+ * in their file should include this file. The following are macros that the
+ * trace file may define:
+ *
+ * TRACE_SYSTEM defines the system the tracepoint is for
+ *
+ * TRACE_INCLUDE_FILE if the file name is something other than TRACE_SYSTEM.h
+ * This macro may be defined to tell define_trace.h what file to include.
+ * Note, leave off the ".h".
+ *
+ * TRACE_INCLUDE_PATH if the path is something other than core kernel include/trace
+ * then this macro can define the path to use. Note, the path is relative to
+ * tracepoint_event.h, not the file including it. Full path names for out of tree
+ * modules must be used.
+ */
+
+#ifdef TRACEPOINT_CREATE_PROBES
+
+/* Prevent recursion */
+#undef TRACEPOINT_CREATE_PROBES
+
+#ifndef __tp_stringify
+#define __tp_stringify_1(x...) #x
+#define __tp_stringify(x...) __tp_stringify_1(x)
+#endif
+
+#undef TRACEPOINT_EVENT
+#define TRACEPOINT_EVENT(name, proto, args, fields) \
+ _DEFINE_TRACEPOINT(name)
+
+#undef TRACEPOINT_EVENT_INSTANCE
+#define TRACEPOINT_EVENT_INSTANCE(template, name, proto, args) \
+ _DEFINE_TRACEPOINT(name)
+
+#undef TRACEPOINT_EVENT_NOARGS
+#define TRACEPOINT_EVENT_NOARGS(name, fields) \
+ _DEFINE_TRACEPOINT(name)
+
+#undef TRACEPOINT_EVENT_INSTANCE_NOARGS
+#define TRACEPOINT_EVENT_INSTANCE_NOARGS(template, name) \
+ _DEFINE_TRACEPOINT(name)
+
+#undef TRACE_INCLUDE
+#undef __TRACE_INCLUDE
+
+#ifndef TRACE_INCLUDE_FILE
+# define TRACE_INCLUDE_FILE TRACE_SYSTEM
+# define UNDEF_TRACE_INCLUDE_FILE
+#endif
+
+#ifndef TRACE_INCLUDE_PATH
+# define __TRACE_INCLUDE(system) <trace/events/system.h>
+# define UNDEF_TRACE_INCLUDE_PATH
+#else
+# define __TRACE_INCLUDE(system) __tp_stringify(TRACE_INCLUDE_PATH/system.h)
+#endif
+
+# define TRACE_INCLUDE(system) __TRACE_INCLUDE(system)
+
+/* Let the trace headers be reread */
+#define TRACE_HEADER_MULTI_READ
+
+#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
+
+#ifndef CONFIG_NO_EVENT_TRACING
+#include <ust/lttng-tracepoint-event.h>
+#endif
+
+#undef TRACEPOINT_EVENT
+#undef TRACEPOINT_EVENT_CLASS
+#undef TRACEPOINT_EVENT_INSTANCE
+#undef TRACEPOINT_EVENT_NOARGS
+#undef TRACEPOINT_EVENT_CLASS_NOARGS
+#undef TRACEPOINT_EVENT_INSTANCE_NOARGS
+#undef TRACE_HEADER_MULTI_READ
+
+/* Only undef what we defined in this file */
+#ifdef UNDEF_TRACE_INCLUDE_FILE
+# undef TRACE_INCLUDE_FILE
+# undef UNDEF_TRACE_INCLUDE_FILE
+#endif
+
+#ifdef UNDEF_TRACE_INCLUDE_PATH
+# undef TRACE_INCLUDE_PATH
+# undef UNDEF_TRACE_INCLUDE_PATH
+#endif
+
+/* We may be processing more files */
+#define TRACEPOINT_CREATE_PROBES
+
+#endif /* TRACEPOINT_CREATE_PROBES */
/*
* For use with the TRACEPOINT_EVENT macro:
*
- * We define a tracepoint, its arguments, its printf format
- * and its 'fast binary record' layout.
+ * We define a tracepoint, its arguments, and its 'fast binary record'
+ * layout.
*
- * Firstly, name your tracepoint via TRACEPOINT_EVENT(name : the
- * 'subsystem_event' notation is fine.
+ * Firstly, name your tracepoint via TRACEPOINT_EVENT(name,
*
- * Think about this whole construct as the
- * 'trace_sched_switch() function' from now on.
+ * The "name" MUST follow these rules to ensure no namespace clash
+ * occurs:
*
+ * For projects (applications and libraries) for which an entity
+ * specific to the project controls the source code and thus its
+ * tracepoints (typically with a scope larger than a single company):
*
- * TRACEPOINT_EVENT(sched_switch,
+ * either:
+ * project_component_event
+ * or:
+ * project_event
+ *
+ * Where "project" is the name of the project,
+ * "component" is the name of the project component where the
+ * tracepoint is located (optional),
+ * "event" is the name of the tracepoint event.
+ *
+ * For projects issued from a single company wishing to advertise that
+ * the company controls the source code and thus the tracepoints, the
+ * "com_" prefix should be used:
+ *
+ * either:
+ * com_company_project_component_event
+ * or:
+ * com_company_project_event
+ *
+ * Where "company" is the name of the company,
+ * "project" is the name of the project,
+ * "component" is the name of the project component where the
+ * tracepoint is located (optional),
+ * "event" is the name of the tracepoint event.
+ *
+ *
+ * As an example, let's consider a user-space application "someproject"
+ * that would have an internal thread scheduler:
+ *
+ * TRACEPOINT_EVENT(someproject_sched_switch,
*
* *
* * A function has a regular function arguments
* * be saved into the ring buffer. These are the fields
* * that will be exposed to readers.
* *
- * * tp_field(pid_t, prev_pid, prev->pid) is equivalent
+ * * ctf_integer(pid_t, prev_pid, prev->pid) is equivalent
* * to a standard declaraton:
* *
* * pid_t prev_pid;
* *
* * prev_pid = prev->pid;
* *
- * * tp_array(char, prev_comm, TASK_COMM_LEN, prev->comm) is
+ * * ctf_array(char, prev_comm, prev->comm, TASK_COMM_LEN) is
* * equivalent to:
* *
* * char prev_comm[TASK_COMM_LEN];
* *
*
* TP_FIELDS(
- * tp_array(char, prev_comm, TASK_COMM_LEN, prev->comm)
- * tp_field(pid_t, prev_pid, prev->pid)
- * tp_field(int, prev_prio, prev->prio)
- * tp_array(char, next_comm, TASK_COMM_LEN, next->comm)
- * tp_field(pid_t, next_pid, next->pid)
- * tp_field(int, next_prio, next->prio)
+ * ctf_array(char, prev_comm, prev->comm, TASK_COMM_LEN)
+ * ctf_integer(pid_t, prev_pid, prev->pid)
+ * ctf_integer(int, prev_prio, prev->prio)
+ * ctf_array(char, next_comm, next->comm, TASK_COMM_LEN)
+ * ctf_integer(pid_t, next_pid, next->pid)
+ * ctf_integer(int, next_prio, next->prio)
* )
- * );
+ * )
*/
#define TRACEPOINT_EVENT(name, proto, args, fields) \
#define TRACEPOINT_EVENT_INSTANCE_NOARGS(template, name) \
_DECLARE_TRACEPOINT_NOARGS(name)
-
-
-#define TRACEPOINT_EVENT_LIB \
- extern struct trace_event * const __start___trace_events_ptrs[] \
- __attribute__((weak, visibility("hidden"))); \
- extern struct trace_event * const __stop___trace_events_ptrs[] \
- __attribute__((weak, visibility("hidden"))); \
- static struct trace_event * __event_ptrs_dummy \
- __attribute__((used, section("__trace_events_ptrs"))); \
- static void __attribute__((constructor)) \
- __trace_events__init(void) \
- { \
- trace_event_register_lib(__start___trace_events_ptrs, \
- __stop___trace_events_ptrs - \
- __start___trace_events_ptrs); \
- } \
- \
- static void __attribute__((destructor)) \
- __trace_event__destroy(void) \
- { \
- trace_event_unregister_lib(__start___trace_events_ptrs);\
- }
-
-struct trace_event {
- const char *name;
-};
-
-struct trace_event_lib {
- struct trace_event * const *trace_events_start;
- int trace_events_count;
- struct cds_list_head list;
-};
-
-extern
-int trace_event_register_lib(struct trace_event * const *start_trace_events,
- int trace_event_count);
-extern
-int trace_event_unregister_lib(struct trace_event * const *start_trace_events);
-
#endif /* #ifndef TRACEPOINT_EVENT */
#endif /* _UST_TRACEPOINT_H */
+++ /dev/null
-/*
- * Copyright (C) 2009 Steven Rostedt <srostedt@redhat.com>
- * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- *
- * Trace files that want to automate creationg of all tracepoints defined
- * in their file should include this file. The following are macros that the
- * trace file may define:
- *
- * TRACE_SYSTEM defines the system the tracepoint is for
- *
- * TRACE_INCLUDE_FILE if the file name is something other than TRACE_SYSTEM.h
- * This macro may be defined to tell define_trace.h what file to include.
- * Note, leave off the ".h".
- *
- * TRACE_INCLUDE_PATH if the path is something other than core kernel include/trace
- * then this macro can define the path to use. Note, the path is relative to
- * tracepoint_event.h, not the file including it. Full path names for out of tree
- * modules must be used.
- */
-
-#ifdef TRACEPOINT_CREATE_PROBES
-
-/* Prevent recursion */
-#undef TRACEPOINT_CREATE_PROBES
-
-#ifndef __tp_stringify
-#define __tp_stringify_1(x...) #x
-#define __tp_stringify(x...) __tp_stringify_1(x)
-#endif
-
-#undef TRACEPOINT_EVENT
-#define TRACEPOINT_EVENT(name, proto, args, fields) \
- _DEFINE_TRACEPOINT(name)
-
-#undef TRACEPOINT_EVENT_INSTANCE
-#define TRACEPOINT_EVENT_INSTANCE(template, name, proto, args) \
- _DEFINE_TRACEPOINT(name)
-
-#undef TRACEPOINT_EVENT_NOARGS
-#define TRACEPOINT_EVENT_NOARGS(name, fields) \
- _DEFINE_TRACEPOINT(name)
-
-#undef TRACEPOINT_EVENT_INSTANCE_NOARGS
-#define TRACEPOINT_EVENT_INSTANCE_NOARGS(template, name) \
- _DEFINE_TRACEPOINT(name)
-
-#undef TRACE_INCLUDE
-#undef __TRACE_INCLUDE
-
-#ifndef TRACE_INCLUDE_FILE
-# define TRACE_INCLUDE_FILE TRACE_SYSTEM
-# define UNDEF_TRACE_INCLUDE_FILE
-#endif
-
-#ifndef TRACE_INCLUDE_PATH
-# define __TRACE_INCLUDE(system) <trace/events/system.h>
-# define UNDEF_TRACE_INCLUDE_PATH
-#else
-# define __TRACE_INCLUDE(system) __tp_stringify(TRACE_INCLUDE_PATH/system.h)
-#endif
-
-# define TRACE_INCLUDE(system) __TRACE_INCLUDE(system)
-
-/* Let the trace headers be reread */
-#define TRACE_HEADER_MULTI_READ
-
-#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-
-#ifndef CONFIG_NO_EVENT_TRACING
-#include <ust/probe.h>
-#endif
-
-#undef TRACEPOINT_EVENT
-#undef TRACEPOINT_EVENT_CLASS
-#undef TRACEPOINT_EVENT_INSTANCE
-#undef TRACEPOINT_EVENT_NOARGS
-#undef TRACEPOINT_EVENT_CLASS_NOARGS
-#undef TRACEPOINT_EVENT_INSTANCE_NOARGS
-#undef TRACE_HEADER_MULTI_READ
-
-/* Only undef what we defined in this file */
-#ifdef UNDEF_TRACE_INCLUDE_FILE
-# undef TRACE_INCLUDE_FILE
-# undef UNDEF_TRACE_INCLUDE_FILE
-#endif
-
-#ifdef UNDEF_TRACE_INCLUDE_PATH
-# undef TRACE_INCLUDE_PATH
-# undef UNDEF_TRACE_INCLUDE_PATH
-#endif
-
-/* We may be processing more files */
-#define TRACEPOINT_CREATE_PROBES
-
-#endif /* TRACEPOINT_CREATE_PROBES */
+++ /dev/null
-#ifndef _LTT_EVENTS_H
-#define _LTT_EVENTS_H
-
-/*
- * ltt-events.h
- *
- * Copyright 2010 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * Holds LTTng per-session event registry.
- *
- * Dual LGPL v2.1/GPL v2 license.
- */
-
-#include <urcu/list.h>
-#include <uuid/uuid.h>
-#include <stdint.h>
-#include <ust/lttng-ust-abi.h>
-
-#undef is_signed_type
-#define is_signed_type(type) (((type)(-1)) < 0)
-
-struct ltt_channel;
-struct ltt_session;
-struct lib_ring_buffer_ctx;
-
-/* Type description */
-
-/* Update the astract_types name table in lttng-types.c along with this enum */
-enum abstract_types {
- atype_integer,
- atype_enum,
- atype_array,
- atype_sequence,
- atype_string,
- NR_ABSTRACT_TYPES,
-};
-
-/* Update the string_encodings name table in lttng-types.c along with this enum */
-enum lttng_string_encodings {
- lttng_encode_none = 0,
- lttng_encode_UTF8 = 1,
- lttng_encode_ASCII = 2,
- NR_STRING_ENCODINGS,
-};
-
-struct lttng_enum_entry {
- unsigned long long start, end; /* start and end are inclusive */
- const char *string;
-};
-
-#define __type_integer(_type, _byte_order, _base, _encoding) \
- { \
- .atype = atype_integer, \
- .u.basic.integer = \
- { \
- .size = sizeof(_type) * CHAR_BIT, \
- .alignment = ltt_alignof(_type) * CHAR_BIT, \
- .signedness = is_signed_type(_type), \
- .reverse_byte_order = _byte_order != __BYTE_ORDER, \
- .base = _base, \
- .encoding = lttng_encode_##_encoding, \
- }, \
- } \
-
-struct lttng_integer_type {
- unsigned int size; /* in bits */
- unsigned short alignment; /* in bits */
- unsigned int signedness:1;
- unsigned int reverse_byte_order:1;
- unsigned int base; /* 2, 8, 10, 16, for pretty print */
- enum lttng_string_encodings encoding;
-};
-
-union _lttng_basic_type {
- struct lttng_integer_type integer;
- struct {
- const char *name;
- } enumeration;
- struct {
- enum lttng_string_encodings encoding;
- } string;
-};
-
-struct lttng_basic_type {
- enum abstract_types atype;
- union {
- union _lttng_basic_type basic;
- } u;
-};
-
-struct lttng_type {
- enum abstract_types atype;
- union {
- union _lttng_basic_type basic;
- struct {
- struct lttng_basic_type elem_type;
- unsigned int length; /* num. elems. */
- } array;
- struct {
- struct lttng_basic_type length_type;
- struct lttng_basic_type elem_type;
- } sequence;
- } u;
-};
-
-struct lttng_enum {
- const char *name;
- struct lttng_type container_type;
- const struct lttng_enum_entry *entries;
- unsigned int len;
-};
-
-/* Event field description */
-
-struct lttng_event_field {
- const char *name;
- struct lttng_type type;
-};
-
-struct lttng_ctx_field {
- struct lttng_event_field event_field;
- size_t (*get_size)(size_t offset);
- void (*record)(struct lttng_ctx_field *field,
- struct lib_ring_buffer_ctx *ctx,
- struct ltt_channel *chan);
- union {
- } u;
- void (*destroy)(struct lttng_ctx_field *field);
-};
-
-struct lttng_ctx {
- struct lttng_ctx_field *fields;
- unsigned int nr_fields;
- unsigned int allocated_fields;
-};
-
-struct lttng_event_desc {
- const char *name;
- void *probe_callback;
- const struct lttng_event_ctx *ctx; /* context */
- const struct lttng_event_field *fields; /* event payload */
- unsigned int nr_fields;
-};
-
-struct lttng_probe_desc {
- const struct lttng_event_desc *event_desc;
- unsigned int nr_events;
- struct cds_list_head head; /* chain registered probes */
-};
-
-/*
- * ltt_event structure is referred to by the tracing fast path. It must be
- * kept small.
- */
-struct ltt_event {
- unsigned int id;
- struct ltt_channel *chan;
- int enabled;
- const struct lttng_event_desc *desc;
- void *filter;
- struct lttng_ctx *ctx;
- enum lttng_ust_instrumentation instrumentation;
- union {
- } u;
- struct cds_list_head list; /* Event list */
- int metadata_dumped:1;
-};
-
-struct ltt_channel_ops {
- struct channel *(*channel_create)(const char *name,
- struct ltt_channel *ltt_chan,
- void *buf_addr,
- size_t subbuf_size, size_t num_subbuf,
- unsigned int switch_timer_interval,
- unsigned int read_timer_interval,
- int *shmid);
- void (*channel_destroy)(struct channel *chan);
- struct lib_ring_buffer *(*buffer_read_open)(struct channel *chan);
- void (*buffer_read_close)(struct lib_ring_buffer *buf);
- int (*event_reserve)(struct lib_ring_buffer_ctx *ctx,
- uint32_t event_id);
- void (*event_commit)(struct lib_ring_buffer_ctx *ctx);
- void (*event_write)(struct lib_ring_buffer_ctx *ctx, const void *src,
- size_t len);
- /*
- * packet_avail_size returns the available size in the current
- * packet. Note that the size returned is only a hint, since it
- * may change due to concurrent writes.
- */
- size_t (*packet_avail_size)(struct channel *chan);
- //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);
-};
-
-struct ltt_channel {
- unsigned int id;
- struct channel *chan; /* Channel buffers */
- int enabled;
- struct lttng_ctx *ctx;
- /* Event ID management */
- struct ltt_session *session;
- struct file *file; /* File associated to channel */
- unsigned int free_event_id; /* Next event ID to allocate */
- struct cds_list_head list; /* Channel list */
- struct ltt_channel_ops *ops;
- int header_type; /* 0: unset, 1: compact, 2: large */
- int metadata_dumped:1;
-};
-
-struct ltt_session {
- int active; /* Is trace session active ? */
- int been_active; /* Has trace session been active ? */
- struct file *file; /* File associated to session */
- struct ltt_channel *metadata; /* Metadata channel */
- struct cds_list_head chan; /* Channel list head */
- struct cds_list_head events; /* Event list head */
- struct cds_list_head list; /* Session list */
- unsigned int free_chan_id; /* Next chan ID to allocate */
- uuid_t uuid; /* Trace session unique ID */
- int metadata_dumped:1;
-};
-
-struct ltt_transport {
- char *name;
- struct cds_list_head node;
- struct ltt_channel_ops ops;
-};
-
-struct ltt_session *ltt_session_create(void);
-int ltt_session_enable(struct ltt_session *session);
-int ltt_session_disable(struct ltt_session *session);
-void ltt_session_destroy(struct ltt_session *session);
-
-struct ltt_channel *ltt_channel_create(struct ltt_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 *shmid);
-struct ltt_channel *ltt_global_channel_create(struct ltt_session *session,
- int overwrite, void *buf_addr,
- size_t subbuf_size, size_t num_subbuf,
- unsigned int switch_timer_interval,
- unsigned int read_timer_interval);
-
-struct ltt_event *ltt_event_create(struct ltt_channel *chan,
- struct lttng_ust_event *event_param,
- void *filter);
-
-int ltt_channel_enable(struct ltt_channel *channel);
-int ltt_channel_disable(struct ltt_channel *channel);
-int ltt_event_enable(struct ltt_event *event);
-int ltt_event_disable(struct ltt_event *event);
-
-void ltt_transport_register(struct ltt_transport *transport);
-void ltt_transport_unregister(struct ltt_transport *transport);
-
-void synchronize_trace(void);
-//int ltt_debugfs_abi_init(void);
-//void ltt_debugfs_abi_exit(void);
-
-int ltt_probe_register(struct lttng_probe_desc *desc);
-void ltt_probe_unregister(struct lttng_probe_desc *desc);
-const struct lttng_event_desc *ltt_event_get(const char *name);
-void ltt_event_put(const struct lttng_event_desc *desc);
-int ltt_probes_init(void);
-void ltt_probes_exit(void);
-struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx);
-void lttng_remove_context_field(struct lttng_ctx **ctx,
- struct lttng_ctx_field *field);
-void lttng_destroy_context(struct lttng_ctx *ctx);
-int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx);
-
-//extern const struct file_operations lttng_tracepoint_list_fops;
-
-#endif /* _LTT_EVENTS_H */
projects / lttng-ust.git / commitdiff
