/*
- * Copyright (c) 2011-2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * SPDX-License-Identifier: MIT
*
- * 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.
+ * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*/
+#include <stdint.h>
#include <stdio.h>
+#include <stdlib.h>
#include <urcu/compiler.h>
#include <urcu/rculist.h>
#include <lttng/ust-events.h>
-#include <lttng/ringbuffer-config.h>
+#include <lttng/ringbuffer-context.h>
+#include <lttng/ust-arch.h>
#include <lttng/ust-compiler.h>
+#include <lttng/tracepoint.h>
+#include <lttng/ust-endian.h>
#include <string.h>
+#define __LTTNG_UST_NULL_STRING "(null)"
+
+#undef tp_list_for_each_entry_rcu
+#define tp_list_for_each_entry_rcu(pos, head, member) \
+ for (pos = cds_list_entry(tp_rcu_dereference((head)->next), __typeof__(*pos), member); \
+ &pos->member != (head); \
+ pos = cds_list_entry(tp_rcu_dereference(pos->member.next), __typeof__(*pos), member))
+
/*
* TRACEPOINT_EVENT_CLASS declares a class of tracepoints receiving the
* same arguments and having the same field layout.
#undef TRACEPOINT_EVENT
#define TRACEPOINT_EVENT(_provider, _name, _args, _fields) \
- TRACEPOINT_EVENT_CLASS(_provider, _name, \
+ _TRACEPOINT_EVENT_CLASS(_provider, _name, \
_TP_PARAMS(_args), \
_TP_PARAMS(_fields)) \
- TRACEPOINT_EVENT_INSTANCE(_provider, _name, _name, \
+ _TRACEPOINT_EVENT_INSTANCE(_provider, _name, _name, \
_TP_PARAMS(_args))
+#undef TRACEPOINT_EVENT_CLASS
+#define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
+ _TRACEPOINT_EVENT_CLASS(_provider, _name, _TP_PARAMS(_args), _TP_PARAMS(_fields))
+
+#undef TRACEPOINT_EVENT_INSTANCE
+#define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \
+ _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _TP_PARAMS(_args))
+
/* Helpers */
#define _TP_ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
/* Reset all macros within TRACEPOINT_EVENT */
#include <lttng/ust-tracepoint-event-reset.h>
+static inline
+void _TP_COMBINE_TOKENS(__tracepoint_provider_mismatch_, TRACEPOINT_PROVIDER)(void)
+ lttng_ust_notrace;
static inline
void _TP_COMBINE_TOKENS(__tracepoint_provider_mismatch_, TRACEPOINT_PROVIDER)(void)
{
}
-#undef TRACEPOINT_EVENT_CLASS
-#define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
+#undef _TRACEPOINT_EVENT_CLASS
+#define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
__tracepoint_provider_mismatch_##_provider();
-#undef TRACEPOINT_EVENT_INSTANCE
-#define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \
+#undef _TRACEPOINT_EVENT_INSTANCE
+#define _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \
__tracepoint_provider_mismatch_##_provider();
-static __attribute__((unused))
+static inline
+void _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(void)
+ lttng_ust_notrace;
+static inline
void _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(void)
{
#include TRACEPOINT_INCLUDE
/* Reset all macros within TRACEPOINT_EVENT */
#include <lttng/ust-tracepoint-event-reset.h>
-#undef TRACEPOINT_EVENT_INSTANCE
-#define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \
+#undef _TRACEPOINT_EVENT_INSTANCE
+#define _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \
static const char \
- __tp_name_len_check##_provider##___##_name[LTTNG_UST_SYM_NAME_LEN] \
+ __tp_name_len_check##_provider##___##_name[LTTNG_UST_ABI_SYM_NAME_LEN] \
__attribute__((unused)) = \
#_provider ":" #_name;
#include TRACEPOINT_INCLUDE
+/*
+ * Stage 0.2 of tracepoint event generation.
+ *
+ * Create dummy trace prototypes for each event class, and for each used
+ * template. This will allow checking whether the prototypes from the
+ * class and the instance using the class actually match.
+ */
+
+/* Reset all macros within TRACEPOINT_EVENT */
+#include <lttng/ust-tracepoint-event-reset.h>
+
+#undef TP_ARGS
+#define TP_ARGS(...) __VA_ARGS__
+
+#undef _TRACEPOINT_EVENT_INSTANCE
+#define _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \
+void __event_template_proto___##_provider##___##_template(_TP_ARGS_DATA_PROTO(_args));
+
+#undef _TRACEPOINT_EVENT_CLASS
+#define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
+void __event_template_proto___##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args));
+
+#include TRACEPOINT_INCLUDE
+
+/*
+ * Stage 0.9 of tracepoint event generation
+ *
+ * Unfolding the enums
+ */
+#include <lttng/ust-tracepoint-event-reset.h>
+
+/* Enumeration entry (single value) */
+#undef ctf_enum_value
+#define ctf_enum_value(_string, _value) \
+ __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_enum_entry, { \
+ .struct_size = sizeof(struct lttng_ust_enum_entry), \
+ .start = { \
+ .value = lttng_ust_is_signed_type(__typeof__(_value)) ? \
+ (long long) (_value) : (_value), \
+ .signedness = lttng_ust_is_signed_type(__typeof__(_value)), \
+ }, \
+ .end = { \
+ .value = lttng_ust_is_signed_type(__typeof__(_value)) ? \
+ (long long) (_value) : (_value), \
+ .signedness = lttng_ust_is_signed_type(__typeof__(_value)), \
+ }, \
+ .string = (_string), \
+ }),
+
+/* Enumeration entry (range) */
+#undef ctf_enum_range
+#define ctf_enum_range(_string, _range_start, _range_end) \
+ __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_enum_entry, { \
+ .struct_size = sizeof(struct lttng_ust_enum_entry), \
+ .start = { \
+ .value = lttng_ust_is_signed_type(__typeof__(_range_start)) ? \
+ (long long) (_range_start) : (_range_start), \
+ .signedness = lttng_ust_is_signed_type(__typeof__(_range_start)), \
+ }, \
+ .end = { \
+ .value = lttng_ust_is_signed_type(__typeof__(_range_end)) ? \
+ (long long) (_range_end) : (_range_end), \
+ .signedness = lttng_ust_is_signed_type(__typeof__(_range_end)), \
+ }, \
+ .string = (_string), \
+ }),
+
+/* Enumeration entry (automatic value; follows the rules of CTF) */
+#undef ctf_enum_auto
+#define ctf_enum_auto(_string) \
+ __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_enum_entry, { \
+ .struct_size = sizeof(struct lttng_ust_enum_entry), \
+ .start = { \
+ .value = -1ULL, \
+ .signedness = 0, \
+ }, \
+ .end = { \
+ .value = -1ULL, \
+ .signedness = 0, \
+ }, \
+ .string = (_string), \
+ .options = LTTNG_UST_ENUM_ENTRY_OPTION_IS_AUTO, \
+ }),
+
+#undef TP_ENUM_VALUES
+#define TP_ENUM_VALUES(...) \
+ __VA_ARGS__
+
+#undef TRACEPOINT_ENUM
+#define TRACEPOINT_ENUM(_provider, _name, _values) \
+ const struct lttng_ust_enum_entry *__enum_values__##_provider##_##_name[] = { \
+ _values \
+ ctf_enum_value("", 0) /* Dummy, 0-len array forbidden by C99. */ \
+ };
+#include TRACEPOINT_INCLUDE
+
+/*
+ * Stage 0.9.1
+ * Verifying array and sequence elements are of an integer type.
+ */
+
+/* Reset all macros within TRACEPOINT_EVENT */
+#include <lttng/ust-tracepoint-event-reset.h>
+#include <lttng/ust-tracepoint-event-write.h>
+#include <lttng/ust-tracepoint-event-nowrite.h>
+
+#undef _ctf_array_encoded
+#define _ctf_array_encoded(_type, _item, _src, _byte_order, \
+ _length, _encoding, _nowrite, \
+ _elem_type_base) \
+ lttng_ust_ctf_array_element_type_is_supported(_type, _item)
+
+#undef _ctf_sequence_encoded
+#define _ctf_sequence_encoded(_type, _item, _src, _byte_order, \
+ _length_type, _src_length, _encoding, _nowrite, \
+ _elem_type_base) \
+ lttng_ust_ctf_array_element_type_is_supported(_type, _item)
+
+#undef TP_FIELDS
+#define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */
+
+#undef _TRACEPOINT_EVENT_CLASS
+#define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
+ _fields
+
+#include TRACEPOINT_INCLUDE
+
/*
* Stage 1 of tracepoint event generation.
*
#include <lttng/ust-tracepoint-event-nowrite.h>
#undef _ctf_integer_ext
-#define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \
- { \
- .name = #_item, \
- .type = __type_integer(_type, _byte_order, _base, none),\
- .nowrite = _nowrite, \
- },
+#define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \
+ __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_event_field, { \
+ .struct_size = sizeof(struct lttng_ust_event_field), \
+ .name = #_item, \
+ .type = lttng_ust_type_integer_define(_type, _byte_order, _base), \
+ .nowrite = _nowrite, \
+ .nofilter = 0, \
+ }),
#undef _ctf_float
#define _ctf_float(_type, _item, _src, _nowrite) \
- { \
- .name = #_item, \
- .type = __type_float(_type), \
- .nowrite = _nowrite, \
- },
+ __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_event_field, { \
+ .struct_size = sizeof(struct lttng_ust_event_field), \
+ .name = #_item, \
+ .type = lttng_ust_type_float_define(_type), \
+ .nowrite = _nowrite, \
+ .nofilter = 0, \
+ }),
#undef _ctf_array_encoded
-#define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \
- { \
- .name = #_item, \
- .type = \
- { \
- .atype = atype_array, \
- .u.array = \
- { \
- .length = _length, \
- .elem_type = __type_integer(_type, BYTE_ORDER, 10, _encoding), \
+#define _ctf_array_encoded(_type, _item, _src, _byte_order, \
+ _length, _encoding, _nowrite, \
+ _elem_type_base) \
+ __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_event_field, { \
+ .struct_size = sizeof(struct lttng_ust_event_field), \
+ .name = #_item, \
+ .type = (const struct lttng_ust_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_type_array, { \
+ .parent = { \
+ .type = lttng_ust_type_array, \
}, \
- }, \
- .nowrite = _nowrite, \
- },
+ .struct_size = sizeof(struct lttng_ust_type_array), \
+ .elem_type = lttng_ust_type_integer_define(_type, _byte_order, _elem_type_base), \
+ .length = _length, \
+ .alignment = 0, \
+ .encoding = lttng_ust_string_encoding_##_encoding, \
+ }), \
+ .nowrite = _nowrite, \
+ .nofilter = 0, \
+ }),
#undef _ctf_sequence_encoded
-#define _ctf_sequence_encoded(_type, _item, _src, \
- _length_type, _src_length, _encoding, _nowrite) \
- { \
- .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), \
+#define _ctf_sequence_encoded(_type, _item, _src, _byte_order, \
+ _length_type, _src_length, _encoding, _nowrite, \
+ _elem_type_base) \
+ __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_event_field, { \
+ .struct_size = sizeof(struct lttng_ust_event_field), \
+ .name = "_" #_item "_length", \
+ .type = lttng_ust_type_integer_define(_length_type, BYTE_ORDER, 10), \
+ .nowrite = _nowrite, \
+ .nofilter = 1, \
+ }), \
+ __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_event_field, { \
+ .struct_size = sizeof(struct lttng_ust_event_field), \
+ .name = #_item, \
+ .type = (const struct lttng_ust_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_type_sequence, { \
+ .parent = { \
+ .type = lttng_ust_type_sequence, \
}, \
- }, \
- .nowrite = _nowrite, \
- },
+ .struct_size = sizeof(struct lttng_ust_type_sequence), \
+ .length_name = "_" #_item "_length", \
+ .elem_type = lttng_ust_type_integer_define(_type, _byte_order, _elem_type_base), \
+ .alignment = 0, \
+ .encoding = lttng_ust_string_encoding_##_encoding, \
+ }), \
+ .nowrite = _nowrite, \
+ .nofilter = 0, \
+ }),
#undef _ctf_string
#define _ctf_string(_item, _src, _nowrite) \
- { \
- .name = #_item, \
- .type = \
- { \
- .atype = atype_string, \
- .u.basic.string.encoding = lttng_encode_UTF8, \
- }, \
- .nowrite = _nowrite, \
- },
+ __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_event_field, { \
+ .struct_size = sizeof(struct lttng_ust_event_field), \
+ .name = #_item, \
+ .type = (const struct lttng_ust_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_type_string, { \
+ .parent = { \
+ .type = lttng_ust_type_string, \
+ }, \
+ .struct_size = sizeof(struct lttng_ust_type_string), \
+ .encoding = lttng_ust_string_encoding_UTF8, \
+ }), \
+ .nowrite = _nowrite, \
+ .nofilter = 0, \
+ }),
+
+#undef _ctf_unused
+#define _ctf_unused(_src)
+
+#undef _ctf_enum
+#define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \
+ __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_event_field, { \
+ .struct_size = sizeof(struct lttng_ust_event_field), \
+ .name = #_item, \
+ .type = (const struct lttng_ust_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_type_enum, { \
+ .parent = { \
+ .type = lttng_ust_type_enum, \
+ }, \
+ .struct_size = sizeof(struct lttng_ust_type_enum), \
+ .desc = &__enum_##_provider##_##_name, \
+ .container_type = lttng_ust_type_integer_define(_type, BYTE_ORDER, 10), \
+ }), \
+ .nowrite = _nowrite, \
+ .nofilter = 0, \
+ }),
#undef TP_FIELDS
#define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */
-#undef TRACEPOINT_EVENT_CLASS
-#define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
- static const struct lttng_event_field __event_fields___##_provider##___##_name[] = { \
+#undef _TRACEPOINT_EVENT_CLASS
+#define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
+ static const struct lttng_ust_event_field *__event_fields___##_provider##___##_name[] = { \
_fields \
+ ctf_integer(int, dummy, 0) /* Dummy, C99 forbids 0-len array. */ \
+ };
+
+#undef TRACEPOINT_ENUM
+#define TRACEPOINT_ENUM(_provider, _name, _values) \
+ static const struct lttng_ust_enum_desc __enum_##_provider##_##_name = { \
+ .struct_size = sizeof(struct lttng_ust_enum_desc), \
+ .name = #_provider "_" #_name, \
+ .entries = __enum_values__##_provider##_##_name, \
+ .nr_entries = _TP_ARRAY_SIZE(__enum_values__##_provider##_##_name) - 1, \
};
#include TRACEPOINT_INCLUDE
#undef TP_ARGS
#define TP_ARGS(...) __VA_ARGS__
-#undef TRACEPOINT_EVENT_CLASS
-#define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
+#undef _TRACEPOINT_EVENT_CLASS
+#define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
static void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args));
#include TRACEPOINT_INCLUDE
/*
- * Stage 3 of tracepoint event generation.
+ * Stage 3.0 of tracepoint event generation.
*
* Create static inline function that calculates event size.
*/
#undef _ctf_integer_ext
#define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \
- __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \
+ if (0) \
+ (void) (_src); /* Unused */ \
+ __event_len += lttng_ust_lib_ring_buffer_align(__event_len, lttng_ust_rb_alignof(_type)); \
__event_len += sizeof(_type);
#undef _ctf_float
#define _ctf_float(_type, _item, _src, _nowrite) \
- __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \
+ if (0) \
+ (void) (_src); /* Unused */ \
+ __event_len += lttng_ust_lib_ring_buffer_align(__event_len, lttng_ust_rb_alignof(_type)); \
__event_len += sizeof(_type);
#undef _ctf_array_encoded
-#define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \
- __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \
+#define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, _encoding, \
+ _nowrite, _elem_type_base) \
+ if (0) \
+ (void) (_src); /* Unused */ \
+ __event_len += lttng_ust_lib_ring_buffer_align(__event_len, lttng_ust_rb_alignof(_type)); \
__event_len += sizeof(_type) * (_length);
#undef _ctf_sequence_encoded
-#define _ctf_sequence_encoded(_type, _item, _src, _length_type, \
- _src_length, _encoding, _nowrite) \
- __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \
+#define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \
+ _src_length, _encoding, _nowrite, _elem_type_base) \
+ if (0) \
+ (void) (_src); /* Unused */ \
+ __event_len += lttng_ust_lib_ring_buffer_align(__event_len, lttng_ust_rb_alignof(_length_type)); \
__event_len += sizeof(_length_type); \
- __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \
+ __event_len += lttng_ust_lib_ring_buffer_align(__event_len, lttng_ust_rb_alignof(_type)); \
__dynamic_len[__dynamic_len_idx] = (_src_length); \
__event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \
__dynamic_len_idx++;
#undef _ctf_string
#define _ctf_string(_item, _src, _nowrite) \
- __event_len += __dynamic_len[__dynamic_len_idx++] = strlen(_src) + 1;
+ __event_len += __dynamic_len[__dynamic_len_idx++] = \
+ strlen((_src) ? (_src) : __LTTNG_UST_NULL_STRING) + 1;
+
+#undef _ctf_unused
+#define _ctf_unused(_src) \
+ if (0) \
+ (void) (_src); /* Unused */
+
+#undef _ctf_enum
+#define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \
+ _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite)
#undef TP_ARGS
#define TP_ARGS(...) __VA_ARGS__
#undef TP_FIELDS
#define TP_FIELDS(...) __VA_ARGS__
-#undef TRACEPOINT_EVENT_CLASS
-#define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
-static inline lttng_ust_notrace \
-size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS_DATA_PROTO(_args)); \
+#undef _TRACEPOINT_EVENT_CLASS
+#define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
static inline \
size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS_DATA_PROTO(_args)) \
+ lttng_ust_notrace; \
+static inline \
+size_t __event_get_size__##_provider##___##_name( \
+ size_t *__dynamic_len __attribute__((__unused__)), \
+ _TP_ARGS_DATA_PROTO(_args)) \
{ \
size_t __event_len = 0; \
- unsigned int __dynamic_len_idx = 0; \
+ unsigned int __dynamic_len_idx __attribute__((__unused__)) = 0; \
\
if (0) \
- (void) __dynamic_len_idx; /* don't warn if unused */ \
+ (void) __tp_data; /* don't warn if unused */ \
+ \
_fields \
return __event_len; \
}
#undef _ctf_integer_ext
#define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \
- if (lttng_is_signed_type(_type)) { \
- int64_t __ctf_tmp_int64 = (int64_t) (_type) (_src); \
+ if (lttng_ust_is_signed_type(_type)) { \
+ int64_t __ctf_tmp_int64; \
+ switch (sizeof(_type)) { \
+ case 1: \
+ { \
+ union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \
+ __ctf_tmp_int64 = (int64_t) __tmp.v; \
+ break; \
+ } \
+ case 2: \
+ { \
+ union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \
+ if (_byte_order != BYTE_ORDER) \
+ __tmp.v = bswap_16(__tmp.v); \
+ __ctf_tmp_int64 = (int64_t) __tmp.v; \
+ break; \
+ } \
+ case 4: \
+ { \
+ union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \
+ if (_byte_order != BYTE_ORDER) \
+ __tmp.v = bswap_32(__tmp.v); \
+ __ctf_tmp_int64 = (int64_t) __tmp.v; \
+ break; \
+ } \
+ case 8: \
+ { \
+ union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \
+ if (_byte_order != BYTE_ORDER) \
+ __tmp.v = bswap_64(__tmp.v); \
+ __ctf_tmp_int64 = (int64_t) __tmp.v; \
+ break; \
+ } \
+ default: \
+ abort(); \
+ }; \
memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \
} else { \
- uint64_t __ctf_tmp_uint64 = (uint64_t) (_type) (_src); \
+ uint64_t __ctf_tmp_uint64; \
+ switch (sizeof(_type)) { \
+ case 1: \
+ { \
+ union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \
+ __ctf_tmp_uint64 = (uint64_t) __tmp.v; \
+ break; \
+ } \
+ case 2: \
+ { \
+ union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \
+ if (_byte_order != BYTE_ORDER) \
+ __tmp.v = bswap_16(__tmp.v); \
+ __ctf_tmp_uint64 = (uint64_t) __tmp.v; \
+ break; \
+ } \
+ case 4: \
+ { \
+ union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \
+ if (_byte_order != BYTE_ORDER) \
+ __tmp.v = bswap_32(__tmp.v); \
+ __ctf_tmp_uint64 = (uint64_t) __tmp.v; \
+ break; \
+ } \
+ case 8: \
+ { \
+ union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \
+ if (_byte_order != BYTE_ORDER) \
+ __tmp.v = bswap_64(__tmp.v); \
+ __ctf_tmp_uint64 = (uint64_t) __tmp.v; \
+ break; \
+ } \
+ default: \
+ abort(); \
+ }; \
memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \
} \
__stack_data += sizeof(int64_t);
}
#undef _ctf_array_encoded
-#define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \
+#define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, \
+ _encoding, _nowrite, _elem_type_base) \
{ \
unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \
const void *__ctf_tmp_ptr = (_src); \
memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \
__stack_data += sizeof(unsigned long); \
- memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void **)); \
- __stack_data += sizeof(void **); \
+ memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \
+ __stack_data += sizeof(void *); \
}
#undef _ctf_sequence_encoded
-#define _ctf_sequence_encoded(_type, _item, _src, _length_type, \
- _src_length, _encoding, _nowrite) \
+#define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \
+ _src_length, _encoding, _nowrite, _elem_type_base) \
{ \
unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \
const void *__ctf_tmp_ptr = (_src); \
memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \
__stack_data += sizeof(unsigned long); \
- memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void **)); \
- __stack_data += sizeof(void **); \
+ memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \
+ __stack_data += sizeof(void *); \
}
#undef _ctf_string
#define _ctf_string(_item, _src, _nowrite) \
{ \
- const void *__ctf_tmp_ptr = (_src); \
- memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void **)); \
- __stack_data += sizeof(void **); \
+ const void *__ctf_tmp_ptr = \
+ ((_src) ? (_src) : __LTTNG_UST_NULL_STRING); \
+ memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \
+ __stack_data += sizeof(void *); \
}
+#undef _ctf_unused
+#define _ctf_unused(_src) \
+ if (0) \
+ (void) (_src);
+
+#undef _ctf_enum
+#define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \
+ _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite)
+
#undef TP_ARGS
#define TP_ARGS(...) __VA_ARGS__
#undef TP_FIELDS
#define TP_FIELDS(...) __VA_ARGS__
-#undef TRACEPOINT_EVENT_CLASS
-#define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
+#undef _TRACEPOINT_EVENT_CLASS
+#define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
static inline \
-void __event_prepare_filter_stack__##_provider##___##_name(char *__stack_data,\
+void __event_prepare_interpreter_stack__##_provider##___##_name(char *__stack_data,\
_TP_ARGS_DATA_PROTO(_args)) \
{ \
+ if (0) { \
+ (void) __tp_data; /* don't warn if unused */ \
+ (void) __stack_data; /* don't warn if unused */ \
+ } \
+ \
_fields \
}
#include TRACEPOINT_INCLUDE
-
-
/*
* Stage 4 of tracepoint event generation.
*
#undef _ctf_integer_ext
#define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \
- __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type));
+ if (0) \
+ (void) (_src); /* Unused */ \
+ __event_align = _tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_type));
#undef _ctf_float
#define _ctf_float(_type, _item, _src, _nowrite) \
- __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type));
+ if (0) \
+ (void) (_src); /* Unused */ \
+ __event_align = _tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_type));
#undef _ctf_array_encoded
-#define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \
- __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type));
+#define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, \
+ _encoding, _nowrite, _elem_type_base) \
+ if (0) \
+ (void) (_src); /* Unused */ \
+ __event_align = _tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_type));
#undef _ctf_sequence_encoded
-#define _ctf_sequence_encoded(_type, _item, _src, _length_type, \
- _src_length, _encoding, _nowrite) \
- __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_length_type)); \
- __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type));
+#define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \
+ _src_length, _encoding, _nowrite, _elem_type_base) \
+ if (0) \
+ (void) (_src); /* Unused */ \
+ if (0) \
+ (void) (_src_length); /* Unused */ \
+ __event_align = _tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_length_type)); \
+ __event_align = _tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_type));
#undef _ctf_string
-#define _ctf_string(_item, _src, _nowrite)
+#define _ctf_string(_item, _src, _nowrite) \
+ if (0) \
+ (void) (_src); /* Unused */
+
+#undef _ctf_unused
+#define _ctf_unused(_src) \
+ if (0) \
+ (void) (_src); /* Unused */
+
+#undef _ctf_enum
+#define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \
+ _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite)
#undef TP_ARGS
#define TP_ARGS(...) __VA_ARGS__
#undef TP_FIELDS
#define TP_FIELDS(...) __VA_ARGS__
-#undef TRACEPOINT_EVENT_CLASS
-#define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
-static inline lttng_ust_notrace \
-size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)); \
+#undef _TRACEPOINT_EVENT_CLASS
+#define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
+static inline \
+size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)) \
+ lttng_ust_notrace; \
static inline \
size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)) \
{ \
#define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \
{ \
_type __tmp = (_src); \
- lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\
- __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\
+ __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp), lttng_ust_rb_alignof(__tmp));\
}
#undef _ctf_float
#define _ctf_float(_type, _item, _src, _nowrite) \
{ \
_type __tmp = (_src); \
- lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\
- __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\
+ __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp), lttng_ust_rb_alignof(__tmp));\
}
#undef _ctf_array_encoded
-#define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \
- lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \
- __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length));
+#define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, \
+ _encoding, _nowrite, _elem_type_base) \
+ if (lttng_ust_string_encoding_##_encoding == lttng_ust_string_encoding_none) \
+ __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length), lttng_ust_rb_alignof(_type)); \
+ else \
+ __chan->ops->event_pstrcpy_pad(&__ctx, (const char *) (_src), _length); \
#undef _ctf_sequence_encoded
-#define _ctf_sequence_encoded(_type, _item, _src, _length_type, \
- _src_length, _encoding, _nowrite) \
+#define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \
+ _src_length, _encoding, _nowrite, _elem_type_base) \
{ \
_length_type __tmpl = __stackvar.__dynamic_len[__dynamic_len_idx]; \
- lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\
- __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\
+ __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type), lttng_ust_rb_alignof(_length_type));\
} \
- lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \
- __chan->ops->event_write(&__ctx, _src, \
- sizeof(_type) * __get_dynamic_len(dest));
+ if (lttng_ust_string_encoding_##_encoding == lttng_ust_string_encoding_none) \
+ __chan->ops->event_write(&__ctx, _src, \
+ sizeof(_type) * __get_dynamic_len(dest), lttng_ust_rb_alignof(_type)); \
+ else \
+ __chan->ops->event_pstrcpy_pad(&__ctx, (const char *) (_src), __get_dynamic_len(dest)); \
#undef _ctf_string
-#define _ctf_string(_item, _src, _nowrite) \
- lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(*(_src))); \
- __chan->ops->event_write(&__ctx, _src, __get_dynamic_len(dest));
+#define _ctf_string(_item, _src, _nowrite) \
+ { \
+ const char *__ctf_tmp_string = \
+ ((_src) ? (_src) : __LTTNG_UST_NULL_STRING); \
+ __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string, \
+ __get_dynamic_len(dest)); \
+ }
+
+#undef _ctf_unused
+#define _ctf_unused(_src)
+
+#undef _ctf_enum
+#define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \
+ _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite)
/* Beware: this get len actually consumes the len value */
#undef __get_dynamic_len
#undef TP_FIELDS
#define TP_FIELDS(...) __VA_ARGS__
+/*
+ * For state dump, check that "session" argument (mandatory) matches the
+ * session this event belongs to. Ensures that we write state dump data only
+ * into the started session, not into all sessions.
+ */
+#undef _TP_SESSION_CHECK
+#ifdef TP_SESSION_CHECK
+#define _TP_SESSION_CHECK(session, csession) (session == csession)
+#else /* TP_SESSION_CHECK */
+#define _TP_SESSION_CHECK(session, csession) 1
+#endif /* TP_SESSION_CHECK */
+
+/*
+ * Use of __builtin_return_address(0) sometimes seems to cause stack
+ * corruption on 32-bit PowerPC. Disable this feature on that
+ * architecture for now by always using the NULL value for the ip
+ * context.
+ */
+#undef _TP_IP_PARAM
+#ifdef TP_IP_PARAM
+#define _TP_IP_PARAM(x) (x)
+#else /* TP_IP_PARAM */
+
+#if defined(LTTNG_UST_ARCH_PPC) && !defined(LTTNG_UST_ARCH_PPC64)
+#define _TP_IP_PARAM(x) NULL
+#else
+#define _TP_IP_PARAM(x) __builtin_return_address(0)
+#endif
+
+#endif /* TP_IP_PARAM */
+
/*
* Using twice size for filter stack data to hold size and pointer for
* each field (worse case). For integers, max size required is 64-bit.
* 2*sizeof(unsigned long) for all supported architectures.
* Perform UNION (||) of filter runtime list.
*/
-#undef TRACEPOINT_EVENT_CLASS
-#define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
-static lttng_ust_notrace \
-void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); \
+#undef _TRACEPOINT_EVENT_CLASS
+#define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
+static \
+void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)) \
+ lttng_ust_notrace; \
static \
void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)) \
{ \
- struct lttng_event *__event = __tp_data; \
- struct lttng_channel *__chan = __event->chan; \
- struct lttng_ust_lib_ring_buffer_ctx __ctx; \
- size_t __event_len, __event_align; \
+ struct lttng_ust_event_common *__event = (struct lttng_ust_event_common *) __tp_data; \
size_t __dynamic_len_idx = 0; \
+ const size_t __num_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_name) - 1; \
union { \
- size_t __dynamic_len[_TP_ARRAY_SIZE(__event_fields___##_provider##___##_name)]; \
- char __filter_stack_data[2 * sizeof(unsigned long) * _TP_ARRAY_SIZE(__event_fields___##_provider##___##_name)]; \
+ size_t __dynamic_len[__num_fields]; \
+ char __interpreter_stack_data[2 * sizeof(unsigned long) * __num_fields]; \
} __stackvar; \
int __ret; \
+ bool __interpreter_stack_prepared = false; \
\
if (0) \
(void) __dynamic_len_idx; /* don't warn if unused */ \
- if (caa_unlikely(!CMM_ACCESS_ONCE(__chan->session->active))) \
- return; \
- if (caa_unlikely(!CMM_ACCESS_ONCE(__chan->enabled))) \
- return; \
+ switch (__event->type) { \
+ case LTTNG_UST_EVENT_TYPE_RECORDER: \
+ { \
+ struct lttng_ust_event_recorder *__event_recorder = (struct lttng_ust_event_recorder *) __event->child; \
+ struct lttng_ust_channel_buffer *__chan = __event_recorder->chan; \
+ struct lttng_ust_channel_common *__chan_common = __chan->parent; \
+ \
+ if (!_TP_SESSION_CHECK(session, __chan_common->session)) \
+ return; \
+ if (caa_unlikely(!CMM_ACCESS_ONCE(__chan_common->session->active))) \
+ return; \
+ if (caa_unlikely(!CMM_ACCESS_ONCE(__chan_common->enabled))) \
+ return; \
+ break; \
+ } \
+ case LTTNG_UST_EVENT_TYPE_NOTIFIER: \
+ break; \
+ } \
if (caa_unlikely(!CMM_ACCESS_ONCE(__event->enabled))) \
return; \
- if (caa_unlikely(!cds_list_empty(&__event->bytecode_runtime_head))) { \
- struct lttng_bytecode_runtime *bc_runtime; \
- int __filter_result = 0; \
- \
- __event_prepare_filter_stack__##_provider##___##_name(__stackvar.__filter_stack_data, \
+ if (caa_unlikely(!TP_RCU_LINK_TEST())) \
+ return; \
+ if (caa_unlikely(CMM_ACCESS_ONCE(__event->eval_filter))) { \
+ __event_prepare_interpreter_stack__##_provider##___##_name(__stackvar.__interpreter_stack_data, \
_TP_ARGS_DATA_VAR(_args)); \
- cds_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \
- if (caa_unlikely(bc_runtime->filter(bc_runtime, \
- __stackvar.__filter_stack_data))) \
- __filter_result = 1; \
- } \
- if (caa_likely(!__filter_result)) \
+ __interpreter_stack_prepared = true; \
+ if (caa_likely(__event->run_filter(__event, \
+ __stackvar.__interpreter_stack_data, NULL) != LTTNG_UST_EVENT_FILTER_ACCEPT)) \
return; \
} \
- __event_len = __event_get_size__##_provider##___##_name(__stackvar.__dynamic_len, \
- _TP_ARGS_DATA_VAR(_args)); \
- __event_align = __event_get_align__##_provider##___##_name(_TP_ARGS_VAR(_args)); \
- lib_ring_buffer_ctx_init(&__ctx, __chan->chan, __event, __event_len, \
- __event_align, -1, __chan->handle); \
- __ret = __chan->ops->event_reserve(&__ctx, __event->id); \
- if (__ret < 0) \
- return; \
- _fields \
- __chan->ops->event_commit(&__ctx); \
+ switch (__event->type) { \
+ case LTTNG_UST_EVENT_TYPE_RECORDER: \
+ { \
+ size_t __event_len, __event_align; \
+ struct lttng_ust_event_recorder *__event_recorder = (struct lttng_ust_event_recorder *) __event->child; \
+ struct lttng_ust_channel_buffer *__chan = __event_recorder->chan; \
+ struct lttng_ust_lib_ring_buffer_ctx __ctx; \
+ \
+ __event_len = __event_get_size__##_provider##___##_name(__stackvar.__dynamic_len, \
+ _TP_ARGS_DATA_VAR(_args)); \
+ __event_align = __event_get_align__##_provider##___##_name(_TP_ARGS_VAR(_args)); \
+ lttng_ust_lib_ring_buffer_ctx_init(&__ctx, __event_recorder, __event_len, __event_align, \
+ _TP_IP_PARAM(TP_IP_PARAM)); \
+ __ret = __chan->ops->event_reserve(&__ctx); \
+ if (__ret < 0) \
+ return; \
+ _fields \
+ __chan->ops->event_commit(&__ctx); \
+ break; \
+ } \
+ case LTTNG_UST_EVENT_TYPE_NOTIFIER: \
+ { \
+ struct lttng_ust_event_notifier *__event_notifier = (struct lttng_ust_event_notifier *) __event->child; \
+ struct lttng_ust_notification_ctx __notif_ctx; \
+ \
+ __notif_ctx.struct_size = sizeof(struct lttng_ust_notification_ctx); \
+ __notif_ctx.eval_capture = CMM_ACCESS_ONCE(__event_notifier->eval_capture); \
+ \
+ if (caa_unlikely(!__interpreter_stack_prepared && __notif_ctx.eval_capture)) \
+ __event_prepare_interpreter_stack__##_provider##___##_name(__stackvar.__interpreter_stack_data, \
+ _TP_ARGS_DATA_VAR(_args)); \
+ \
+ __event_notifier->notification_send(__event_notifier, \
+ __stackvar.__interpreter_stack_data, \
+ &__notif_ctx); \
+ break; \
+ } \
+ } \
}
#include TRACEPOINT_INCLUDE
#define _TP_EXTRACT_STRING2(...) #__VA_ARGS__
-#undef TRACEPOINT_EVENT_CLASS
-#define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
-const char __tp_event_signature___##_provider##___##_name[] = \
+#undef _TRACEPOINT_EVENT_CLASS
+#define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
+static const char __tp_event_signature___##_provider##___##_name[] = \
_TP_EXTRACT_STRING2(_args);
#include TRACEPOINT_INCLUDE
/* Reset all macros within TRACEPOINT_EVENT */
#include <lttng/ust-tracepoint-event-reset.h>
+/*
+ * Declare _loglevel___##__provider##___##__name as non-static, with
+ * hidden visibility for c++ handling of weakref. We do a weakref to the
+ * symbol in a later stage, which requires that the symbol is not
+ * mangled.
+ */
+#ifdef __cplusplus
+#define LTTNG_TP_EXTERN_C extern "C"
+#else
+#define LTTNG_TP_EXTERN_C
+#endif
+
#undef TRACEPOINT_LOGLEVEL
#define TRACEPOINT_LOGLEVEL(__provider, __name, __loglevel) \
static const int _loglevel_value___##__provider##___##__name = __loglevel; \
-static const int *_loglevel___##__provider##___##__name = \
+LTTNG_TP_EXTERN_C const int *_loglevel___##__provider##___##__name \
+ __attribute__((visibility("hidden"))) = \
&_loglevel_value___##__provider##___##__name;
#include TRACEPOINT_INCLUDE
+#undef LTTNG_TP_EXTERN_C
+
/*
* Stage 6.1 of tracepoint event generation.
*
/* Reset all macros within TRACEPOINT_EVENT */
#include <lttng/ust-tracepoint-event-reset.h>
+/*
+ * Declare _model_emf_uri___##__provider##___##__name as non-static,
+ * with hidden visibility for c++ handling of weakref. We do a weakref
+ * to the symbol in a later stage, which requires that the symbol is not
+ * mangled.
+ */
+#ifdef __cplusplus
+#define LTTNG_TP_EXTERN_C extern "C"
+#else
+#define LTTNG_TP_EXTERN_C
+#endif
+
#undef TRACEPOINT_MODEL_EMF_URI
#define TRACEPOINT_MODEL_EMF_URI(__provider, __name, __uri) \
-static const char *_model_emf_uri___##__provider##___##__name = __uri;
+LTTNG_TP_EXTERN_C const char *_model_emf_uri___##__provider##___##__name \
+ __attribute__((visibility("hidden"))) = __uri; \
#include TRACEPOINT_INCLUDE
+#undef LTTNG_TP_EXTERN_C
+
+/*
+ * Stage 7.0 of tracepoint event generation.
+ *
+ * Declare toplevel descriptor for the whole probe.
+ * Unlike C, C++ does not allow tentative definitions. Therefore, we
+ * need to explicitly declare the variable with "extern", using hidden
+ * visibility to keep this symbol from being exported to the global
+ * symbol table.
+ */
+
+extern const struct lttng_ust_probe_desc _TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)
+ __attribute__((visibility("hidden")));
+
/*
* Stage 7.1 of tracepoint event generation.
*
/* Reset all macros within TRACEPOINT_EVENT */
#include <lttng/ust-tracepoint-event-reset.h>
-#undef TRACEPOINT_EVENT_INSTANCE
-#define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \
+#undef _TRACEPOINT_EVENT_INSTANCE
+#define _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \
static const int * \
__ref_loglevel___##_provider##___##_name \
__attribute__((weakref ("_loglevel___" #_provider "___" #_name))); \
static const char * \
__ref_model_emf_uri___##_provider##___##_name \
__attribute__((weakref ("_model_emf_uri___" #_provider "___" #_name)));\
-const struct lttng_event_desc __event_desc___##_provider##_##_name = { \
+static const struct lttng_ust_event_desc __event_desc___##_provider##_##_name = { \
+ .struct_size = sizeof(struct lttng_ust_event_desc), \
+ .event_name = #_name, \
+ .probe_desc = &__probe_desc___##_provider, \
+ .probe_callback = (void (*)(void)) &__event_probe__##_provider##___##_template, \
.fields = __event_fields___##_provider##___##_template, \
- .name = #_provider ":" #_name, \
- .probe_callback = (void (*)(void)) &__event_probe__##_provider##___##_template,\
- .nr_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_template), \
+ .nr_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_template) - 1, \
.loglevel = &__ref_loglevel___##_provider##___##_name, \
.signature = __tp_event_signature___##_provider##___##_template, \
- .u.ext.model_emf_uri = &__ref_model_emf_uri___##_provider##___##_name, \
+ .model_emf_uri = &__ref_model_emf_uri___##_provider##___##_name, \
};
#include TRACEPOINT_INCLUDE
/* Reset all macros within TRACEPOINT_EVENT */
#include <lttng/ust-tracepoint-event-reset.h>
-#undef TRACEPOINT_EVENT_INSTANCE
-#define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \
+#undef _TRACEPOINT_EVENT_INSTANCE
+#define _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \
&__event_desc___##_provider##_##_name,
-static const struct lttng_event_desc *_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)[] = {
+static const struct lttng_ust_event_desc *_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)[] = {
#include TRACEPOINT_INCLUDE
+ NULL, /* Dummy, C99 forbids 0-len array. */
};
* Create a toplevel descriptor for the whole probe.
*/
-/* non-const because list head will be modified when registered. */
-static struct lttng_probe_desc _TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER) = {
- .provider = __tp_stringify(TRACEPOINT_PROVIDER),
+const struct lttng_ust_probe_desc _TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER) = {
+ .struct_size = sizeof(struct lttng_ust_probe_desc),
+ .provider_name = __tp_stringify(TRACEPOINT_PROVIDER),
.event_desc = _TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER),
- .nr_events = _TP_ARRAY_SIZE(_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)),
+ .nr_events = _TP_ARRAY_SIZE(_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)) - 1,
+ .major = LTTNG_UST_PROVIDER_MAJOR,
+ .minor = LTTNG_UST_PROVIDER_MINOR,
};
+static int _TP_COMBINE_TOKENS(__probe_register_refcount___, TRACEPOINT_PROVIDER);
+static struct lttng_ust_registered_probe *_TP_COMBINE_TOKENS(__lttng_ust_probe_register_cookie___, TRACEPOINT_PROVIDER);
+
/*
* Stage 9 of tracepoint event generation.
*
*
* Generate the constructor as an externally visible symbol for use when
* linking the probe statically.
+ *
+ * Register refcount is protected by libc dynamic loader mutex.
*/
/* Reset all macros within TRACEPOINT_EVENT */
#include <lttng/ust-tracepoint-event-reset.h>
-static void lttng_ust_notrace __attribute__((constructor))
-_TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void);
+static void
+_TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void)
+ lttng_ust_notrace __attribute__((constructor));
static void
_TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void)
{
- int ret;
+ struct lttng_ust_registered_probe *reg_probe;
- ret = lttng_probe_register(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER));
- assert(!ret);
+ if (_TP_COMBINE_TOKENS(__probe_register_refcount___,
+ TRACEPOINT_PROVIDER)++) {
+ return;
+ }
+ /*
+ * __tracepoint_provider_check_ ## TRACEPOINT_PROVIDER() is a
+ * static inline function that ensures every probe PROVIDER
+ * argument match the provider within which they appear. It
+ * calls empty static inline functions, and therefore has no
+ * runtime effect. However, if it detects an error, a linker
+ * error will appear.
+ */
+ _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)();
+ assert(!_TP_COMBINE_TOKENS(__lttng_ust_probe_register_cookie___, TRACEPOINT_PROVIDER));
+ reg_probe = lttng_ust_probe_register(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER));
+ if (!reg_probe) {
+ fprintf(stderr, "LTTng-UST: Error while registering tracepoint probe.\n");
+ abort();
+ }
+ _TP_COMBINE_TOKENS(__lttng_ust_probe_register_cookie___, TRACEPOINT_PROVIDER) = reg_probe;
}
-static void lttng_ust_notrace __attribute__((destructor))
-_TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void);
+static void
+_TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void)
+ lttng_ust_notrace __attribute__((destructor));
static void
_TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void)
{
- lttng_probe_unregister(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER));
+ if (--_TP_COMBINE_TOKENS(__probe_register_refcount___,
+ TRACEPOINT_PROVIDER)) {
+ return;
+ }
+ lttng_ust_probe_unregister(_TP_COMBINE_TOKENS(__lttng_ust_probe_register_cookie___, TRACEPOINT_PROVIDER));
+ _TP_COMBINE_TOKENS(__lttng_ust_probe_register_cookie___, TRACEPOINT_PROVIDER) = NULL;
}
-int _TP_COMBINE_TOKENS(__tracepoint_provider_, TRACEPOINT_PROVIDER);
+int _TP_COMBINE_TOKENS(__tracepoint_provider_, TRACEPOINT_PROVIDER)
+ __attribute__((visibility("default")));
projects / lttng-ust.git / blobdiff