-/*
- * Copyright (c) 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
- * OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
- *
- * Permission is hereby granted to use or copy this program
- * for any purpose, provided the above notices are retained on all copies.
- * Permission to modify the code and to distribute modified code is granted,
- * provided the above notices are retained, and a notice that the code was
- * modified is included with the above copyright notice.
- */
+// SPDX-FileCopyrightText: 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+//
+// SPDX-License-Identifier: MIT
+#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/ust-ringbuffer-context.h>
+#include <lttng/ust-arch.h>
+#include <lttng/ust-compiler.h>
+#include <lttng/tracepoint.h>
+#include <lttng/ust-endian.h>
+#include <lttng/ust-api-compat.h>
#include <string.h>
+#include <lttng/ust-api-compat.h>
+
+#if LTTNG_UST_COMPAT_API(0)
+#define TP_FIELDS LTTNG_UST_TP_FIELDS
+
+#define ctf_integer lttng_ust_field_integer
+#define ctf_integer_hex lttng_ust_field_integer_hex
+#define ctf_integer_network lttng_ust_field_integer_network
+#define ctf_integer_network_hex lttng_ust_field_integer_network_hex
+#define ctf_integer_nowrite lttng_ust_field_integer_nowrite
+
+#define ctf_float lttng_ust_field_float
+#define ctf_float_nowrite lttng_ust_field_float_nowrite
+
+#define ctf_array lttng_ust_field_array
+#define ctf_array_hex lttng_ust_field_array_hex
+#define ctf_array_network lttng_ust_field_array_network
+#define ctf_array_network_hex lttng_ust_field_array_network_hex
+#define ctf_array_text lttng_ust_field_array_text
+#define ctf_array_nowrite lttng_ust_field_array_nowrite
+#define ctf_array_nowrite_hex lttng_ust_field_array_nowrite_hex
+#define ctf_array_network_nowrite lttng_ust_field_array_network_nowrite
+#define ctf_array_network_nowrite_hex lttng_ust_field_array_network_nowrite_hex
+#define ctf_array_text_nowrite lttng_ust_field_array_text_nowrite
+
+#define ctf_sequence lttng_ust_field_sequence
+#define ctf_sequence_hex lttng_ust_field_sequence_hex
+#define ctf_sequence_network lttng_ust_field_sequence_network
+#define ctf_sequence_network_hex lttng_ust_field_sequence_network_hex
+#define ctf_sequence_text lttng_ust_field_sequence_text
+#define ctf_sequence_nowrite lttng_ust_field_sequence_nowrite
+#define ctf_sequence_nowrite_hex lttng_ust_field_sequence_nowrite_hex
+#define ctf_sequence_network_nowrite lttng_ust_field_sequence_network_nowrite
+#define ctf_sequence_network_nowrite_hex lttng_ust_field_sequence_network_nowrite_hex
+#define ctf_sequence_text_nowrite lttng_ust_field_sequence_text_nowrite
+
+#define ctf_string lttng_ust_field_string
+#define ctf_string_nowrite lttng_ust_field_string_nowrite
+
+#define ctf_unused lttng_ust_field_unused
+#define ctf_unused_nowrite lttng_ust_field_unused_nowrite
+
+#define ctf_enum lttng_ust_field_enum
+#define ctf_enum_nowrite lttng_ust_field_enum_nowrite
+#define ctf_enum_value lttng_ust_field_enum_value
+#define ctf_enum_range lttng_ust_field_enum_range
+#define ctf_enum_auto lttng_ust_field_enum_auto
+#endif /* #if LTTNG_UST_COMPAT_API(0) */
+
+#define LTTNG_UST__NULL_STRING "(null)"
/*
- * 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)
-
-/* ctf_float is redefined at each step */
-
-#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 declares a class of tracepoints receiving the
+ * LTTNG_UST_TRACEPOINT_EVENT_CLASS declares a class of tracepoints receiving the
* same arguments and having the same field layout.
*
- * TRACEPOINT_EVENT_INSTANCE declares an instance of a tracepoint, with
+ * LTTNG_UST_TRACEPOINT_EVENT_INSTANCE declares an instance of a tracepoint, with
* its own provider and name. It refers to a class (template).
*
- * TRACEPOINT_EVENT declared both a class and an instance and does a
+ * LTTNG_UST_TRACEPOINT_EVENT declared both a class and an instance and does a
* direct mapping from the instance to the class.
*/
-#undef TRACEPOINT_EVENT
-#define TRACEPOINT_EVENT(_provider, _name, _args, _fields) \
- TRACEPOINT_EVENT_CLASS(_provider, _name, \
- _TP_PARAMS(_args), \
- _TP_PARAMS(_fields)) \
- TRACEPOINT_EVENT_INSTANCE(_provider, _name, _name, \
- _TP_PARAMS(args))
+#undef LTTNG_UST_TRACEPOINT_EVENT
+#define LTTNG_UST_TRACEPOINT_EVENT(_provider, _name, _args, _fields) \
+ LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, \
+ LTTNG_UST__TP_PARAMS(_args), \
+ LTTNG_UST__TP_PARAMS(_fields)) \
+ LTTNG_UST__TRACEPOINT_EVENT_INSTANCE(_provider, _name, _provider, _name, \
+ LTTNG_UST__TP_PARAMS(_args))
+
+#undef LTTNG_UST_TRACEPOINT_EVENT_CLASS
+#define LTTNG_UST_TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
+ LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, LTTNG_UST__TP_PARAMS(_args), LTTNG_UST__TP_PARAMS(_fields))
+
+#undef LTTNG_UST_TRACEPOINT_EVENT_INSTANCE
+#define LTTNG_UST_TRACEPOINT_EVENT_INSTANCE(_template_provider, _template_name, _provider, _name, _args) \
+ LTTNG_UST__TRACEPOINT_EVENT_INSTANCE(_template_provider, _template_name, _provider, _name, LTTNG_UST__TP_PARAMS(_args))
/* Helpers */
-#define _TP_ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+#define LTTNG_UST__TP_ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
-#define _tp_max_t(type, x, y) \
+#define lttng_ust__tp_max_t(type, x, y) \
({ \
- type __max1 = (x); \
- type __max2 = (y); \
- __max1 > __max2 ? __max1: __max2; \
+ type lttng_ust__max1 = (x); \
+ type lttng_ust__max2 = (y); \
+ lttng_ust__max1 > lttng_ust__max2 ? lttng_ust__max1: lttng_ust__max2; \
})
/*
* Stage 0 of tracepoint event generation.
*
- * Check that each TRACEPOINT_EVENT provider argument match the
- * TRACEPOINT_PROVIDER by creating dummy callbacks.
+ * Check that each LTTNG_UST_TRACEPOINT_EVENT provider argument match the
+ * LTTNG_UST_TRACEPOINT_PROVIDER by creating dummy callbacks.
*/
-/* Reset all macros within TRACEPOINT_EVENT */
+/* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */
#include <lttng/ust-tracepoint-event-reset.h>
static inline
-void _TP_COMBINE_TOKENS(__tracepoint_provider_mismatch_, TRACEPOINT_PROVIDER)(void)
+void LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust_tracepoint_provider_mismatch_, LTTNG_UST_TRACEPOINT_PROVIDER)(void)
+ lttng_ust_notrace;
+static inline
+void LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust_tracepoint_provider_mismatch_, LTTNG_UST_TRACEPOINT_PROVIDER)(void)
{
}
-#undef TRACEPOINT_EVENT_CLASS
-#define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
- __tracepoint_provider_mismatch_##_provider();
+#undef LTTNG_UST__TRACEPOINT_EVENT_CLASS
+#define LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
+ lttng_ust_tracepoint_provider_mismatch_##_provider();
-#undef TRACEPOINT_EVENT_INSTANCE
-#define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \
- __tracepoint_provider_mismatch_##_provider();
+#undef LTTNG_UST__TRACEPOINT_EVENT_INSTANCE
+#define LTTNG_UST__TRACEPOINT_EVENT_INSTANCE(_template_provider, _template_name, _provider, _name, _args) \
+ lttng_ust_tracepoint_provider_mismatch_##_provider();
-static __attribute__((unused))
-void _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(void)
+static inline
+void LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust_tracepoint_provider_check_, LTTNG_UST_TRACEPOINT_PROVIDER)(void)
+ lttng_ust_notrace;
+static inline
+void LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust_tracepoint_provider_check_, LTTNG_UST_TRACEPOINT_PROVIDER)(void)
{
-#include TRACEPOINT_INCLUDE
+#include LTTNG_UST_TRACEPOINT_INCLUDE
}
/*
- * Stage 1 of tracepoint event generation.
+ * Stage 0.1 of tracepoint event generation.
*
- * Create event field type metadata section.
- * Each event produce an array of fields.
+ * Check that each LTTNG_UST_TRACEPOINT_EVENT provider:name does not exceed the
+ * tracepoint name length limit.
*/
-/* Reset all macros within TRACEPOINT_EVENT */
+/* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */
#include <lttng/ust-tracepoint-event-reset.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_float
-#define ctf_float(_type, _item, _src) \
- { \
- .name = #_item, \
- .type = __type_float(_type), \
- },
-
-#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(_provider, _name, _args, _fields) \
- static const struct lttng_event_field __event_fields___##_provider##___##_name[] = { \
- _fields \
+#undef LTTNG_UST__TRACEPOINT_EVENT_INSTANCE
+#define LTTNG_UST__TRACEPOINT_EVENT_INSTANCE(_template_provider, _template_name, _provider, _name, _args) \
+ lttng_ust_tracepoint_validate_name_len(_provider, _name);
+
+#include LTTNG_UST_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 LTTNG_UST_TRACEPOINT_EVENT */
+#include <lttng/ust-tracepoint-event-reset.h>
+
+#undef LTTNG_UST_TP_ARGS
+#define LTTNG_UST_TP_ARGS(...) __VA_ARGS__
+
+#undef LTTNG_UST__TRACEPOINT_EVENT_INSTANCE
+#define LTTNG_UST__TRACEPOINT_EVENT_INSTANCE(_template_provider, _template_name, _provider, _name, _args) \
+void lttng_ust__event_template_proto___##_template_provider##___##_template_name(LTTNG_UST__TP_ARGS_DATA_PROTO(_args));
+
+#undef LTTNG_UST__TRACEPOINT_EVENT_CLASS
+#define LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
+void lttng_ust__event_template_proto___##_provider##___##_name(LTTNG_UST__TP_ARGS_DATA_PROTO(_args));
+
+#include LTTNG_UST_TRACEPOINT_INCLUDE
+
+/*
+ * Stage 0.9 of tracepoint event generation
+ *
+ * Unfolding the enums
+ */
+#include <lttng/ust-tracepoint-event-reset.h>
+
+/* Enumeration entry (single value) */
+#undef lttng_ust_field_enum_value
+#define lttng_ust_field_enum_value(_string, _value) \
+ LTTNG_UST_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 lttng_ust_field_enum_range
+#define lttng_ust_field_enum_range(_string, _range_start, _range_end) \
+ LTTNG_UST_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 lttng_ust_field_enum_auto
+#define lttng_ust_field_enum_auto(_string) \
+ LTTNG_UST_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 LTTNG_UST_TP_ENUM_VALUES
+#define LTTNG_UST_TP_ENUM_VALUES(...) \
+ __VA_ARGS__
+
+#if LTTNG_UST_COMPAT_API(0)
+# undef TP_ENUM_VALUES
+# define TP_ENUM_VALUES LTTNG_UST_TP_ENUM_VALUES
+#endif /* #if LTTNG_UST_COMPAT_API(0) */
+
+#undef LTTNG_UST_TRACEPOINT_ENUM
+#define LTTNG_UST_TRACEPOINT_ENUM(_provider, _name, _values) \
+ const struct lttng_ust_enum_entry * const __enum_values__##_provider##_##_name[] = { \
+ _values \
+ lttng_ust_field_enum_value("", 0) /* Dummy, 0-len array forbidden by C99. */ \
};
+#include LTTNG_UST_TRACEPOINT_INCLUDE
-#include TRACEPOINT_INCLUDE
/*
- * Stage 2 of tracepoint event generation.
+ * Stage 0.9.0
+ * Verifying sequence length types are of an unsigned type.
+ */
+
+/* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */
+#include <lttng/ust-tracepoint-event-reset.h>
+#include <lttng/ust-tracepoint-event-write.h>
+#include <lttng/ust-tracepoint-event-nowrite.h>
+
+/*
+ * Note that it is not possible to encode the length type as a C identifier,
+ * since it can be multiple tokens.
+ */
+#undef lttng_ust__field_sequence_encoded
+#define lttng_ust__field_sequence_encoded(_type, _item, _src, _byte_order, \
+ _length_type, _src_length, _encoding, _nowrite, \
+ _elem_type_base) \
+ lttng_ust_static_assert(!lttng_ust_is_signed_type(_length_type), \
+ "Length type " #_length_type " is not a unsigned integer type", \
+ Length_type_is_not_a_unsigned_integer_type);
+
+#undef LTTNG_UST_TP_FIELDS
+#define LTTNG_UST_TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */
+
+#undef LTTNG_UST__TRACEPOINT_EVENT_CLASS
+#define LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
+ _fields
+
+#include LTTNG_UST_TRACEPOINT_INCLUDE
+
+#if defined(__cplusplus)
+
+/*
+ * Stage 0.9.1
+ * Verifying array and sequence elements are of an integer or pointer
+ * type.
*
- * Create probe callback prototypes.
+ * This compile-time check is only enabled in C++, because the C
+ * implementation of lttng_ust_is_pointer_type does not support opaque
+ * pointer types.
*/
-/* Reset all macros within TRACEPOINT_EVENT */
+/* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */
#include <lttng/ust-tracepoint-event-reset.h>
+#include <lttng/ust-tracepoint-event-write.h>
+#include <lttng/ust-tracepoint-event-nowrite.h>
+
+#undef lttng_ust__field_array_encoded
+#define lttng_ust__field_array_encoded(_type, _item, _src, _byte_order, \
+ _length, _encoding, _nowrite, \
+ _elem_type_base) \
+ lttng_ust_field_array_element_type_is_supported(_type, _item);
-#undef TP_ARGS
-#define TP_ARGS(args...) args
+#undef lttng_ust__field_sequence_encoded
+#define lttng_ust__field_sequence_encoded(_type, _item, _src, _byte_order, \
+ _length_type, _src_length, _encoding, _nowrite, \
+ _elem_type_base) \
+ lttng_ust_field_array_element_type_is_supported(_type, _item);
-#undef TRACEPOINT_EVENT_CLASS
-#define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
-static void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args));
+#undef LTTNG_UST_TP_FIELDS
+#define LTTNG_UST_TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */
-#include TRACEPOINT_INCLUDE
+#undef LTTNG_UST__TRACEPOINT_EVENT_CLASS
+#define LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
+ _fields
+
+#include LTTNG_UST_TRACEPOINT_INCLUDE
+
+#endif
/*
- * Stage 3 of tracepoint event generation.
+ * Stage 0.9.2 of tracepoint event generation.
*
- * Create an array of events.
+ * Create probe signature
*/
-/* Reset all macros within TRACEPOINT_EVENT */
+/* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */
#include <lttng/ust-tracepoint-event-reset.h>
-#undef TRACEPOINT_EVENT_INSTANCE
-#define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \
- { \
- .fields = __event_fields___##_provider##___##_template,\
- .name = #_provider ":" #_name, \
- .probe_callback = (void *) &__event_probe__##_provider##___##_template,\
- .nr_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_template), \
- },
-
-static const struct lttng_event_desc _TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)[] = {
-#include TRACEPOINT_INCLUDE
-};
+#undef LTTNG_UST_TP_ARGS
+#define LTTNG_UST_TP_ARGS(...) __VA_ARGS__
+
+#define LTTNG_UST__TP_EXTRACT_STRING2(...) #__VA_ARGS__
+
+#undef LTTNG_UST__TRACEPOINT_EVENT_CLASS
+#define LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
+static const char __tp_event_signature___##_provider##___##_name[] = \
+ LTTNG_UST__TP_EXTRACT_STRING2(_args);
+
+#include LTTNG_UST_TRACEPOINT_INCLUDE
+#undef LTTNG_UST__TP_EXTRACT_STRING2
/*
- * Stage 4 of tracepoint event generation.
+ * Stage 1 of tracepoint event generation.
*
- * Create a toplevel descriptor for the whole probe.
+ * Create probe callback prototypes.
*/
-/* non-const because list head will be modified when registered. */
-static struct lttng_probe_desc _TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER) = {
- .event_desc = _TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER),
- .nr_events = _TP_ARRAY_SIZE(_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)),
-};
+/* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */
+#include <lttng/ust-tracepoint-event-reset.h>
+
+#undef LTTNG_UST_TP_ARGS
+#define LTTNG_UST_TP_ARGS(...) __VA_ARGS__
+
+#undef LTTNG_UST__TRACEPOINT_EVENT_CLASS
+#define LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
+static void lttng_ust__event_probe__##_provider##___##_name(LTTNG_UST__TP_ARGS_DATA_PROTO(_args));
+
+#include LTTNG_UST_TRACEPOINT_INCLUDE
/*
- * Stage 5 of tracepoint event generation.
+ * Stage 1.1 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 LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__probe_desc___, LTTNG_UST_TRACEPOINT_PROVIDER)
+ __attribute__((visibility("hidden")));
+
+/*
+ * Stage 2 of tracepoint event generation.
+ *
+ * Create event field type metadata section.
+ * Each event produce an array of fields.
+ */
+
+/* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */
+#include <lttng/ust-tracepoint-event-reset.h>
+#include <lttng/ust-tracepoint-event-write.h>
+#include <lttng/ust-tracepoint-event-nowrite.h>
+
+#undef lttng_ust__field_integer_ext
+#define lttng_ust__field_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \
+ LTTNG_UST_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 lttng_ust__field_float
+#define lttng_ust__field_float(_type, _item, _src, _nowrite) \
+ LTTNG_UST_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 lttng_ust__field_array_encoded
+#define lttng_ust__field_array_encoded(_type, _item, _src, _byte_order, \
+ _length, _encoding, _nowrite, \
+ _elem_type_base) \
+ LTTNG_UST_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_UST_COMPOUND_LITERAL(const struct lttng_ust_type_array, { \
+ .parent = { \
+ .type = lttng_ust_type_array, \
+ }, \
+ .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 lttng_ust__field_sequence_encoded
+#define lttng_ust__field_sequence_encoded(_type, _item, _src, _byte_order, \
+ _length_type, _src_length, _encoding, _nowrite, \
+ _elem_type_base) \
+ LTTNG_UST_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, LTTNG_UST_BYTE_ORDER, 10), \
+ .nowrite = _nowrite, \
+ .nofilter = 1, \
+ }), \
+ LTTNG_UST_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_UST_COMPOUND_LITERAL(const struct lttng_ust_type_sequence, { \
+ .parent = { \
+ .type = lttng_ust_type_sequence, \
+ }, \
+ .struct_size = sizeof(struct lttng_ust_type_sequence), \
+ .length_name = NULL, /* Use previous field. */ \
+ .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 lttng_ust__field_string
+#define lttng_ust__field_string(_item, _src, _nowrite) \
+ LTTNG_UST_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_UST_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 lttng_ust__field_unused
+#define lttng_ust__field_unused(_src)
+
+#undef lttng_ust__field_enum
+#define lttng_ust__field_enum(_provider, _name, _type, _item, _src, _nowrite) \
+ LTTNG_UST_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_UST_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, LTTNG_UST_BYTE_ORDER, 10), \
+ }), \
+ .nowrite = _nowrite, \
+ .nofilter = 0, \
+ }),
+
+#undef LTTNG_UST_TP_FIELDS
+#define LTTNG_UST_TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */
+
+#undef LTTNG_UST__TRACEPOINT_EVENT_CLASS
+#define LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
+ static const struct lttng_ust_event_field * const lttng_ust__event_fields___##_provider##___##_name[] = { \
+ _fields \
+ lttng_ust_field_integer(int, dummy, 0) /* Dummy, C99 forbids 0-len array. */ \
+ }; \
+ static const struct lttng_ust_tracepoint_class lttng_ust__event_class___##_provider##___##_name = { \
+ .struct_size = sizeof(struct lttng_ust_tracepoint_class), \
+ .fields = lttng_ust__event_fields___##_provider##___##_name, \
+ .nr_fields = LTTNG_UST__TP_ARRAY_SIZE(lttng_ust__event_fields___##_provider##___##_name) - 1, \
+ .probe_callback = (void (*)(void)) <tng_ust__event_probe__##_provider##___##_name, \
+ .signature = __tp_event_signature___##_provider##___##_name, \
+ .probe_desc = <tng_ust__probe_desc___##_provider, \
+ };
+
+#undef LTTNG_UST_TRACEPOINT_ENUM
+#define LTTNG_UST_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 = LTTNG_UST__TP_ARRAY_SIZE(__enum_values__##_provider##_##_name) - 1, \
+ .probe_desc = <tng_ust__probe_desc___##_provider, \
+ };
+
+#include LTTNG_UST_TRACEPOINT_INCLUDE
+
+/*
+ * Stage 3.0 of tracepoint event generation.
*
* Create static inline function that calculates event size.
*/
-/* Reset all macros within TRACEPOINT_EVENT */
+/* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */
#include <lttng/ust-tracepoint-event-reset.h>
+#include <lttng/ust-tracepoint-event-write.h>
-#undef ctf_integer_ext
-#define ctf_integer_ext(_type, _item, _src, _byte_order, _base) \
- __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \
+#undef lttng_ust__field_integer_ext
+#define lttng_ust__field_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \
+ if (0) \
+ (void) (_src); /* Unused */ \
+ __event_len += lttng_ust_ring_buffer_align(__event_len, lttng_ust_rb_alignof(_type)); \
__event_len += sizeof(_type);
-#undef ctf_float
-#define ctf_float(_type, _item, _src) \
- __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \
+#undef lttng_ust__field_float
+#define lttng_ust__field_float(_type, _item, _src, _nowrite) \
+ if (0) \
+ (void) (_src); /* Unused */ \
+ __event_len += lttng_ust_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) \
- __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \
+#undef lttng_ust__field_array_encoded
+#define lttng_ust__field_array_encoded(_type, _item, _src, _byte_order, _length, _encoding, \
+ _nowrite, _elem_type_base) \
+ if (0) \
+ (void) (_src); /* Unused */ \
+ __event_len += lttng_ust_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) \
- __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \
+#undef lttng_ust__field_sequence_encoded
+#define lttng_ust__field_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_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_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) \
- __event_len += __dynamic_len[__dynamic_len_idx++] = strlen(_src) + 1;
+#undef lttng_ust__field_string
+#define lttng_ust__field_string(_item, _src, _nowrite) \
+ __event_len += __dynamic_len[__dynamic_len_idx++] = \
+ strlen((_src) ? (_src) : LTTNG_UST__NULL_STRING) + 1;
+
+#undef lttng_ust__field_unused
+#define lttng_ust__field_unused(_src) \
+ if (0) \
+ (void) (_src); /* Unused */
+
+#undef lttng_ust__field_enum
+#define lttng_ust__field_enum(_provider, _name, _type, _item, _src, _nowrite) \
+ lttng_ust__field_integer_ext(_type, _item, _src, LTTNG_UST_BYTE_ORDER, 10, _nowrite)
-#undef TP_ARGS
-#define TP_ARGS(args...) args
+#undef LTTNG_UST_TP_ARGS
+#define LTTNG_UST_TP_ARGS(...) __VA_ARGS__
-#undef TP_FIELDS
-#define TP_FIELDS(args...) args
+#undef LTTNG_UST_TP_FIELDS
+#define LTTNG_UST_TP_FIELDS(...) __VA_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)) \
+#undef LTTNG_UST__TRACEPOINT_EVENT_CLASS
+#define LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
+static inline \
+size_t lttng_ust__event_get_size__##_provider##___##_name(size_t *__dynamic_len, LTTNG_UST__TP_ARGS_DATA_PROTO(_args)) \
+ lttng_ust_notrace; \
+static inline \
+size_t lttng_ust__event_get_size__##_provider##___##_name( \
+ size_t *__dynamic_len __attribute__((__unused__)), \
+ LTTNG_UST__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; \
}
-#include TRACEPOINT_INCLUDE
+#include LTTNG_UST_TRACEPOINT_INCLUDE
/*
- * Stage 6 of tracepoint event generation.
+ * Stage 3.1 of tracepoint event generation.
*
- * Create static inline function that calculates event payload alignment.
+ * Create static inline function that layout the filter stack data.
+ * We make both write and nowrite data available to the filter.
*/
-/* Reset all macros within TRACEPOINT_EVENT */
+/* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */
#include <lttng/ust-tracepoint-event-reset.h>
+#include <lttng/ust-tracepoint-event-write.h>
+#include <lttng/ust-tracepoint-event-nowrite.h>
+
+#undef lttng_ust__field_integer_ext
+#define lttng_ust__field_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \
+ 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 != LTTNG_UST_BYTE_ORDER) \
+ __tmp.v = lttng_ust_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 != LTTNG_UST_BYTE_ORDER) \
+ __tmp.v = lttng_ust_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 != LTTNG_UST_BYTE_ORDER) \
+ __tmp.v = lttng_ust_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; \
+ 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 != LTTNG_UST_BYTE_ORDER) \
+ __tmp.v = lttng_ust_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 != LTTNG_UST_BYTE_ORDER) \
+ __tmp.v = lttng_ust_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 != LTTNG_UST_BYTE_ORDER) \
+ __tmp.v = lttng_ust_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 lttng_ust__field_float
+#define lttng_ust__field_float(_type, _item, _src, _nowrite) \
+ { \
+ double __ctf_tmp_double = (double) (_type) (_src); \
+ memcpy(__stack_data, &__ctf_tmp_double, sizeof(double)); \
+ __stack_data += sizeof(double); \
+ }
+
+#undef lttng_ust__field_array_encoded
+#define lttng_ust__field_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 *); \
+ }
+
+#undef lttng_ust__field_sequence_encoded
+#define lttng_ust__field_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 *); \
+ }
-#undef ctf_integer_ext
-#define ctf_integer_ext(_type, _item, _src, _byte_order, _base) \
- __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type));
+#undef lttng_ust__field_string
+#define lttng_ust__field_string(_item, _src, _nowrite) \
+ { \
+ 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_float
-#define ctf_float(_type, _item, _src) \
- __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type));
+#undef lttng_ust__field_unused
+#define lttng_ust__field_unused(_src) \
+ if (0) \
+ (void) (_src);
-#undef ctf_array_encoded
-#define ctf_array_encoded(_type, _item, _src, _length, _encoding) \
- __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type));
+#undef lttng_ust__field_enum
+#define lttng_ust__field_enum(_provider, _name, _type, _item, _src, _nowrite) \
+ lttng_ust__field_integer_ext(_type, _item, _src, LTTNG_UST_BYTE_ORDER, 10, _nowrite)
-#undef ctf_sequence_encoded
-#define ctf_sequence_encoded(_type, _item, _src, _length_type, \
- _src_length, _encoding) \
- __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));
+#undef LTTNG_UST_TP_ARGS
+#define LTTNG_UST_TP_ARGS(...) __VA_ARGS__
-#undef ctf_string
-#define ctf_string(_item, _src)
+#undef LTTNG_UST_TP_FIELDS
+#define LTTNG_UST_TP_FIELDS(...) __VA_ARGS__
+
+#undef LTTNG_UST__TRACEPOINT_EVENT_CLASS
+#define LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
+static inline \
+void lttng_ust__event_prepare_interpreter_stack__##_provider##___##_name(char *__stack_data,\
+ LTTNG_UST__TP_ARGS_DATA_PROTO(_args)) \
+{ \
+ if (0) { \
+ (void) __tp_data; /* don't warn if unused */ \
+ (void) __stack_data; /* don't warn if unused */ \
+ } \
+ \
+ _fields \
+}
-#undef TP_ARGS
-#define TP_ARGS(args...) args
+#include LTTNG_UST_TRACEPOINT_INCLUDE
-#undef TP_FIELDS
-#define TP_FIELDS(args...) args
+/*
+ * Stage 4 of tracepoint event generation.
+ *
+ * Create static inline function that calculates event payload alignment.
+ */
-#undef TRACEPOINT_EVENT_CLASS
-#define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
+/* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */
+#include <lttng/ust-tracepoint-event-reset.h>
+#include <lttng/ust-tracepoint-event-write.h>
+
+#undef lttng_ust__field_integer_ext
+#define lttng_ust__field_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \
+ if (0) \
+ (void) (_src); /* Unused */ \
+ __event_align = lttng_ust__tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_type));
+
+#undef lttng_ust__field_float
+#define lttng_ust__field_float(_type, _item, _src, _nowrite) \
+ if (0) \
+ (void) (_src); /* Unused */ \
+ __event_align = lttng_ust__tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_type));
+
+#undef lttng_ust__field_array_encoded
+#define lttng_ust__field_array_encoded(_type, _item, _src, _byte_order, _length, \
+ _encoding, _nowrite, _elem_type_base) \
+ if (0) \
+ (void) (_src); /* Unused */ \
+ __event_align = lttng_ust__tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_type));
+
+#undef lttng_ust__field_sequence_encoded
+#define lttng_ust__field_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 = lttng_ust__tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_length_type)); \
+ __event_align = lttng_ust__tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_type));
+
+#undef lttng_ust__field_string
+#define lttng_ust__field_string(_item, _src, _nowrite) \
+ if (0) \
+ (void) (_src); /* Unused */
+
+#undef lttng_ust__field_unused
+#define lttng_ust__field_unused(_src) \
+ if (0) \
+ (void) (_src); /* Unused */
+
+#undef lttng_ust__field_enum
+#define lttng_ust__field_enum(_provider, _name, _type, _item, _src, _nowrite) \
+ lttng_ust__field_integer_ext(_type, _item, _src, LTTNG_UST_BYTE_ORDER, 10, _nowrite)
+
+#undef LTTNG_UST_TP_ARGS
+#define LTTNG_UST_TP_ARGS(...) __VA_ARGS__
+
+#undef LTTNG_UST_TP_FIELDS
+#define LTTNG_UST_TP_FIELDS(...) __VA_ARGS__
+
+#undef LTTNG_UST__TRACEPOINT_EVENT_CLASS
+#define LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
static inline \
-size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)) \
+size_t lttng_ust__event_get_align__##_provider##___##_name(LTTNG_UST__TP_ARGS_PROTO(_args)) \
+ lttng_ust_notrace; \
+static inline \
+size_t lttng_ust__event_get_align__##_provider##___##_name(LTTNG_UST__TP_ARGS_PROTO(_args)) \
{ \
size_t __event_align = 1; \
_fields \
return __event_align; \
}
-#include TRACEPOINT_INCLUDE
+#include LTTNG_UST_TRACEPOINT_INCLUDE
/*
- * Stage 7 of tracepoint event generation.
+ * Stage 5 of tracepoint event generation.
*
* Create the probe function. This function calls event size calculation
* and writes event data into the buffer.
*/
-/* Reset all macros within TRACEPOINT_EVENT */
+/* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */
#include <lttng/ust-tracepoint-event-reset.h>
+#include <lttng/ust-tracepoint-event-write.h>
-#undef ctf_integer_ext
-#define ctf_integer_ext(_type, _item, _src, _byte_order, _base) \
+#undef lttng_ust__field_integer_ext
+#define lttng_ust__field_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) \
+#undef lttng_ust__field_float
+#define lttng_ust__field_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) \
- lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \
- __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length));
-
-#undef ctf_sequence_encoded
-#define ctf_sequence_encoded(_type, _item, _src, _length_type, \
- _src_length, _encoding) \
+#undef lttng_ust__field_array_encoded
+#define lttng_ust__field_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 lttng_ust__field_sequence_encoded
+#define lttng_ust__field_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \
+ _src_length, _encoding, _nowrite, _elem_type_base) \
{ \
- _length_type __tmpl = __dynamic_len[__dynamic_len_idx]; \
- lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\
- __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\
+ _length_type __tmpl = __stackvar.__dynamic_len[__dynamic_len_idx]; \
+ __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) * lttng_ust__get_dynamic_len(dest), lttng_ust_rb_alignof(_type)); \
+ else \
+ __chan->ops->event_pstrcpy_pad(&__ctx, (const char *) (_src), lttng_ust__get_dynamic_len(dest)); \
+
+#undef lttng_ust__field_string
+#define lttng_ust__field_string(_item, _src, _nowrite) \
+ { \
+ const char *__ctf_tmp_string = \
+ ((_src) ? (_src) : LTTNG_UST__NULL_STRING); \
+ __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string, \
+ lttng_ust__get_dynamic_len(dest)); \
+ }
+
+#undef lttng_ust__field_unused
+#define lttng_ust__field_unused(_src)
-#undef ctf_string
-#define ctf_string(_item, _src) \
- lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(*(_src))); \
- __chan->ops->event_write(&__ctx, _src, __get_dynamic_len(dest));
+#undef lttng_ust__field_enum
+#define lttng_ust__field_enum(_provider, _name, _type, _item, _src, _nowrite) \
+ lttng_ust__field_integer_ext(_type, _item, _src, LTTNG_UST_BYTE_ORDER, 10, _nowrite)
/* Beware: this get len actually consumes the len value */
-#undef __get_dynamic_len
-#define __get_dynamic_len(field) __dynamic_len[__dynamic_len_idx++]
+#undef lttng_ust__get_dynamic_len
+#define lttng_ust__get_dynamic_len(field) __stackvar.__dynamic_len[__dynamic_len_idx++]
-#undef TP_ARGS
-#define TP_ARGS(args...) args
+#undef LTTNG_UST_TP_ARGS
+#define LTTNG_UST_TP_ARGS(...) __VA_ARGS__
-#undef TP_FIELDS
-#define TP_FIELDS(args...) args
+#undef LTTNG_UST_TP_FIELDS
+#define LTTNG_UST_TP_FIELDS(...) __VA_ARGS__
-#undef TRACEPOINT_EVENT_CLASS
-#define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
-static void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_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 LTTNG_UST__TP_SESSION_CHECK
+#ifdef LTTNG_UST_TP_SESSION_CHECK
+#define LTTNG_UST__TP_SESSION_CHECK(session, csession) (session == csession)
+#else /* TP_SESSION_CHECK */
+#define LTTNG_UST__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 LTTNG_UST__TP_IP_PARAM
+
+#ifdef LTTNG_UST_TP_IP_PARAM
+#define LTTNG_UST__TP_IP_PARAM(x) (x)
+#else /* TP_IP_PARAM */
+
+#if defined(LTTNG_UST_ARCH_PPC) && !defined(LTTNG_UST_ARCH_PPC64)
+#define LTTNG_UST__TP_IP_PARAM(x) NULL
+#else
+#define LTTNG_UST__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.
+ * Same for double-precision floats. Those fit within
+ * 2*sizeof(unsigned long) for all supported architectures.
+ * Perform UNION (||) of filter runtime list.
+ */
+#undef LTTNG_UST__TRACEPOINT_EVENT_CLASS
+#define LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
+static \
+void lttng_ust__event_probe__##_provider##___##_name(LTTNG_UST__TP_ARGS_DATA_PROTO(_args)) \
+ lttng_ust_notrace; \
+static \
+void lttng_ust__event_probe__##_provider##___##_name(LTTNG_UST__TP_ARGS_DATA_PROTO(_args)) \
{ \
- struct ltt_event *__event = __tp_data; \
- struct ltt_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; \
- size_t __dynamic_len[_TP_ARRAY_SIZE(__event_fields___##_provider##___##_name)]; \
+ const size_t __num_fields = LTTNG_UST__TP_ARRAY_SIZE(lttng_ust__event_fields___##_provider##___##_name) - 1; \
+ struct lttng_ust_probe_ctx __probe_ctx; \
+ union { \
+ 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 (!LTTNG_UST__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; \
- __event_len = __event_get_size__##_provider##___##_name(__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) \
+ if (caa_unlikely(!LTTNG_UST_TP_RCU_LINK_TEST())) \
return; \
- _fields \
- __chan->ops->event_commit(&__ctx); \
+ __probe_ctx.struct_size = sizeof(struct lttng_ust_probe_ctx); \
+ __probe_ctx.ip = LTTNG_UST__TP_IP_PARAM(LTTNG_UST_TP_IP_PARAM); \
+ if (caa_unlikely(CMM_ACCESS_ONCE(__event->eval_filter))) { \
+ lttng_ust__event_prepare_interpreter_stack__##_provider##___##_name(__stackvar.__interpreter_stack_data, \
+ LTTNG_UST__TP_ARGS_DATA_VAR(_args)); \
+ __interpreter_stack_prepared = true; \
+ if (caa_likely(__event->run_filter(__event, \
+ __stackvar.__interpreter_stack_data, &__probe_ctx, NULL) != LTTNG_UST_EVENT_FILTER_ACCEPT)) \
+ return; \
+ } \
+ 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_ring_buffer_ctx __ctx; \
+ \
+ __event_len = lttng_ust__event_get_size__##_provider##___##_name(__stackvar.__dynamic_len, \
+ LTTNG_UST__TP_ARGS_DATA_VAR(_args)); \
+ __event_align = lttng_ust__event_get_align__##_provider##___##_name(LTTNG_UST__TP_ARGS_VAR(_args)); \
+ lttng_ust_ring_buffer_ctx_init(&__ctx, __event_recorder, __event_len, __event_align, \
+ &__probe_ctx); \
+ __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)) \
+ lttng_ust__event_prepare_interpreter_stack__##_provider##___##_name(__stackvar.__interpreter_stack_data, \
+ LTTNG_UST__TP_ARGS_DATA_VAR(_args)); \
+ \
+ __event_notifier->notification_send(__event_notifier, \
+ __stackvar.__interpreter_stack_data, \
+ &__probe_ctx, \
+ &__notif_ctx); \
+ break; \
+ } \
+ } \
}
-#include TRACEPOINT_INCLUDE
+#include LTTNG_UST_TRACEPOINT_INCLUDE
+
+#undef lttng_ust__get_dynamic_len
+
+/*
+ * Stage 6 of tracepoint event generation.
+ *
+ * Tracepoint loglevel mapping definition generation. We generate a
+ * symbol for each mapping for a provider/event to ensure at most a 1 to
+ * 1 mapping between events and loglevels. If the symbol is repeated,
+ * the compiler will complain.
+ */
+
+/* Reset all macros within LTTNG_UST_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_UST_TP_EXTERN_C extern "C"
+#else
+#define LTTNG_UST_TP_EXTERN_C
+#endif
+
+#undef LTTNG_UST_TRACEPOINT_LOGLEVEL
+#define LTTNG_UST_TRACEPOINT_LOGLEVEL(__provider, __name, __loglevel) \
+static const int _loglevel_value___##__provider##___##__name = __loglevel; \
+LTTNG_UST_TP_EXTERN_C const int * const _loglevel___##__provider##___##__name \
+ __attribute__((visibility("hidden"))) = \
+ &_loglevel_value___##__provider##___##__name;
+
+#include LTTNG_UST_TRACEPOINT_INCLUDE
+
+#undef LTTNG_UST_TP_EXTERN_C
+
+/*
+ * Stage 6.1 of tracepoint event generation.
+ *
+ * Tracepoint UML URI info.
+ */
+
+/* Reset all macros within LTTNG_UST_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_UST_TP_EXTERN_C extern "C"
+#else
+#define LTTNG_UST_TP_EXTERN_C
+#endif
+
+#undef LTTNG_UST_TRACEPOINT_MODEL_EMF_URI
+#define LTTNG_UST_TRACEPOINT_MODEL_EMF_URI(__provider, __name, __uri) \
+LTTNG_UST_TP_EXTERN_C const char * const _model_emf_uri___##__provider##___##__name \
+ __attribute__((visibility("hidden"))) = __uri; \
+
+#include LTTNG_UST_TRACEPOINT_INCLUDE
+
+#undef LTTNG_UST_TP_EXTERN_C
+
+/*
+ * Stage 7.0 of tracepoint event generation.
+ *
+ * Create events description structures. We use a weakref because
+ * loglevels are optional. If not declared, the event will point to
+ * a loglevel that contains NULL.
+ *
+ * C++ requires that const objects have a user-declared default
+ * constructor. However, in both C++ and C, weakref cannot be
+ * initialized because it causes the weakref attribute to be ignored.
+ * Therefore, the loglevel and model_emf_uri pointers are not const
+ * to ensure C++ compilers default-initialize them.
+ */
+
+/* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */
+#include <lttng/ust-tracepoint-event-reset.h>
+
+#undef LTTNG_UST__TRACEPOINT_EVENT_INSTANCE
+#define LTTNG_UST__TRACEPOINT_EVENT_INSTANCE(_template_provider, _template_name, _provider, _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)));\
+static const struct lttng_ust_event_desc lttng_ust__event_desc___##_provider##_##_name = { \
+ .struct_size = sizeof(struct lttng_ust_event_desc), \
+ .event_name = #_name, \
+ .probe_desc = <tng_ust__probe_desc___##_provider, \
+ .tp_class = <tng_ust__event_class___##_template_provider##___##_template_name, \
+ .loglevel = &__ref_loglevel___##_provider##___##_name, \
+ .model_emf_uri = &__ref_model_emf_uri___##_provider##___##_name, \
+};
+
+#include LTTNG_UST_TRACEPOINT_INCLUDE
+
+/*
+ * Stage 7.1 of tracepoint event generation.
+ *
+ * Create array of events.
+ */
+
+/* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */
+#include <lttng/ust-tracepoint-event-reset.h>
+
+#undef LTTNG_UST__TRACEPOINT_EVENT_INSTANCE
+#define LTTNG_UST__TRACEPOINT_EVENT_INSTANCE(_template_provider, _template_name, _provider, _name, _args) \
+ <tng_ust__event_desc___##_provider##_##_name,
+
+static const struct lttng_ust_event_desc * const LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__provider_event_desc___, LTTNG_UST_TRACEPOINT_PROVIDER)[] = {
+#include LTTNG_UST_TRACEPOINT_INCLUDE
+ NULL, /* Dummy, C99 forbids 0-len array. */
+};
-#undef __get_dynamic_len
/*
* Stage 8 of tracepoint event generation.
*
+ * Create a toplevel descriptor for the whole probe.
+ */
+
+const struct lttng_ust_probe_desc LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__probe_desc___, LTTNG_UST_TRACEPOINT_PROVIDER) = {
+ .struct_size = sizeof(struct lttng_ust_probe_desc),
+ .provider_name = lttng_ust__tp_stringify(LTTNG_UST_TRACEPOINT_PROVIDER),
+ .event_desc = LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__provider_event_desc___, LTTNG_UST_TRACEPOINT_PROVIDER),
+ .nr_events = LTTNG_UST__TP_ARRAY_SIZE(LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__provider_event_desc___, LTTNG_UST_TRACEPOINT_PROVIDER)) - 1,
+ .major = LTTNG_UST_PROVIDER_MAJOR,
+ .minor = LTTNG_UST_PROVIDER_MINOR,
+};
+
+static int LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__probe_register_refcount___, LTTNG_UST_TRACEPOINT_PROVIDER);
+static struct lttng_ust_registered_probe *LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__probe_register_cookie___, LTTNG_UST_TRACEPOINT_PROVIDER);
+
+/*
+ * Stage 9 of tracepoint event generation.
+ *
* Register/unregister probes at module load/unload.
+ *
+ * Generate the constructor as an externally visible symbol for use when
+ * linking the probe statically.
+ *
+ * Register refcount is protected by libc dynamic loader mutex.
+ *
+ * Note that when building this code as C++, the definition of constructors
+ * and destructors invoking the registration and unregistration functions
+ * must be performed _after_ the initialization of the probes.
+ *
+ * This is because we rely on the order of initialization of static variables
+ * and anonymous namespaces (their order of declaration) to ensure probes are
+ * fully initialized, see
+ * https://en.cppreference.com/w/cpp/language/initialization. This is especially
+ * important when LTTNG_UST_ALLOCATE_COMPOUND_LITERAL_ON_HEAP is defined as
+ * compound literals are then dynamically initialized.
*/
-/* Reset all macros within TRACEPOINT_EVENT */
+/* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */
#include <lttng/ust-tracepoint-event-reset.h>
-static void __attribute__((constructor))
-_TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void)
+static void
+LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__events_init__, LTTNG_UST_TRACEPOINT_PROVIDER)(void) lttng_ust_notrace;
+static void
+LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__events_init__, LTTNG_UST_TRACEPOINT_PROVIDER)(void)
{
- int ret;
+ struct lttng_ust_registered_probe *reg_probe;
- ret = ltt_probe_register(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER));
- assert(!ret);
+ if (LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__probe_register_refcount___,
+ LTTNG_UST_TRACEPOINT_PROVIDER)++) {
+ return;
+ }
+ /*
+ * lttng_ust_tracepoint_provider_check_ ## LTTNG_UST_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.
+ */
+ LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust_tracepoint_provider_check_, LTTNG_UST_TRACEPOINT_PROVIDER)();
+ assert(!LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__probe_register_cookie___, LTTNG_UST_TRACEPOINT_PROVIDER));
+ reg_probe = lttng_ust_probe_register(<TNG_UST__TP_COMBINE_TOKENS(lttng_ust__probe_desc___, LTTNG_UST_TRACEPOINT_PROVIDER));
+ if (!reg_probe) {
+ fprintf(stderr, "LTTng-UST: Error while registering tracepoint probe.\n");
+ abort();
+ }
+ LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__probe_register_cookie___, LTTNG_UST_TRACEPOINT_PROVIDER) = reg_probe;
}
-static void __attribute__((destructor))
-_TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void)
+static void
+LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__events_exit__, LTTNG_UST_TRACEPOINT_PROVIDER)(void) lttng_ust_notrace;
+static void
+LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__events_exit__, LTTNG_UST_TRACEPOINT_PROVIDER)(void)
{
- ltt_probe_unregister(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER));
+ if (--LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__probe_register_refcount___,
+ LTTNG_UST_TRACEPOINT_PROVIDER)) {
+ return;
+ }
+ lttng_ust_probe_unregister(LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__probe_register_cookie___, LTTNG_UST_TRACEPOINT_PROVIDER));
+ LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__probe_register_cookie___, LTTNG_UST_TRACEPOINT_PROVIDER) = NULL;
}
+
+LTTNG_UST_DECLARE_CONSTRUCTOR_DESTRUCTOR(
+ LTTNG_UST_TRACEPOINT_PROVIDER,
+ LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__events_init__, LTTNG_UST_TRACEPOINT_PROVIDER),
+ LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__events_exit__, LTTNG_UST_TRACEPOINT_PROVIDER),
+ lttng_ust_notrace)
+
+/*
+ * LTTNG_UST_TRACEPOINT_PROVIDER_HIDDEN_DEFINITION: Define this before
+ * including a tracepoint instrumentation header to hide symbols
+ * associated with the tracepoint provider. This is useful if the
+ * tracepoint definition (including the header after defining
+ * LTTNG_UST_TRACEPOINT_DEFINE) is in the same module as the provider
+ * (including the header after defining
+ * LTTNG_UST_TRACEPOINT_CREATE_PROBES).
+ */
+#undef LTTNG_UST__TRACEPOINT_PROVIDER_DEFINITION_VISIBILITY
+#ifdef LTTNG_UST_TRACEPOINT_PROVIDER_HIDDEN_DEFINITION
+#define LTTNG_UST__TRACEPOINT_PROVIDER_DEFINITION_VISIBILITY __attribute__((visibility("hidden")))
+#else
+#define LTTNG_UST__TRACEPOINT_PROVIDER_DEFINITION_VISIBILITY __attribute__((visibility("default")))
+#endif
+
+int LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust_tracepoint_provider_, LTTNG_UST_TRACEPOINT_PROVIDER)
+ LTTNG_UST__TRACEPOINT_PROVIDER_DEFINITION_VISIBILITY;
projects / lttng-ust.git / blobdiff