* SOFTWARE.
*/
+#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <urcu/compiler.h>
#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
*
#define ctf_enum_value(_string, _value) \
{ \
.start = { \
- .signedness = lttng_is_signed_type(__typeof__(_value)), \
.value = lttng_is_signed_type(__typeof__(_value)) ? \
(long long) (_value) : (_value), \
+ .signedness = lttng_is_signed_type(__typeof__(_value)), \
}, \
.end = { \
- .signedness = lttng_is_signed_type(__typeof__(_value)), \
.value = lttng_is_signed_type(__typeof__(_value)) ? \
(long long) (_value) : (_value), \
+ .signedness = lttng_is_signed_type(__typeof__(_value)), \
}, \
.string = (_string), \
},
#define ctf_enum_range(_string, _range_start, _range_end) \
{ \
.start = { \
- .signedness = lttng_is_signed_type(__typeof__(_range_start)), \
.value = lttng_is_signed_type(__typeof__(_range_start)) ? \
(long long) (_range_start) : (_range_start), \
+ .signedness = lttng_is_signed_type(__typeof__(_range_start)), \
}, \
.end = { \
- .signedness = lttng_is_signed_type(__typeof__(_range_end)), \
.value = lttng_is_signed_type(__typeof__(_range_end)) ? \
(long long) (_range_end) : (_range_end), \
+ .signedness = lttng_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) \
+ { \
+ .start = { \
+ .value = -1ULL, \
+ .signedness = 0, \
+ }, \
+ .end = { \
+ .value = -1ULL, \
+ .signedness = 0, \
+ }, \
+ .string = (_string), \
+ .u = { \
+ .extra = { \
+ .options = LTTNG_ENUM_ENTRY_OPTION_IS_AUTO, \
+ }, \
+ }, \
+ },
+
#undef TP_ENUM_VALUES
#define TP_ENUM_VALUES(...) \
__VA_ARGS__
#define TRACEPOINT_ENUM(_provider, _name, _values) \
const struct lttng_enum_entry __enum_values__##_provider##_##_name[] = { \
_values \
+ ctf_enum_value("", 0) /* Dummy, 0-len array forbidden by C99. */ \
};
#include TRACEPOINT_INCLUDE
#define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
static const struct lttng_event_field __event_fields___##_provider##___##_name[] = { \
_fields \
+ ctf_integer(int, dummy, 0) /* Dummy, C99 forbids 0-len array. */ \
};
#undef TRACEPOINT_ENUM
static const struct lttng_enum_desc __enum_##_provider##_##_name = { \
.name = #_provider "_" #_name, \
.entries = __enum_values__##_provider##_##_name, \
- .nr_entries = _TP_ARRAY_SIZE(__enum_values__##_provider##_##_name), \
+ .nr_entries = _TP_ARRAY_SIZE(__enum_values__##_provider##_##_name) - 1, \
};
#include TRACEPOINT_INCLUDE
size_t __event_len, __event_align; \
size_t __dynamic_len_idx = 0; \
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[_TP_ARRAY_SIZE(__event_fields___##_provider##___##_name) - 1]; \
+ char __filter_stack_data[2 * sizeof(unsigned long) * (_TP_ARRAY_SIZE(__event_fields___##_provider##___##_name) - 1)]; \
} __stackvar; \
int __ret; \
\
#undef TRACEPOINT_EVENT_CLASS
#define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \
-const char __tp_event_signature___##_provider##___##_name[] = \
+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 7.1 of tracepoint event generation.
*
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_event_desc __event_desc___##_provider##_##_name = { \
.name = #_provider ":" #_name, \
.probe_callback = (void (*)(void)) &__event_probe__##_provider##___##_template,\
.ctx = NULL, \
.fields = __event_fields___##_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 = { \
static const struct lttng_event_desc *_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)[] = {
#include TRACEPOINT_INCLUDE
+ NULL, /* Dummy, C99 forbids 0-len array. */
};
static struct lttng_probe_desc _TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER) = {
.provider = __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,
.head = { NULL, NULL },
.lazy_init_head = { NULL, NULL },
.lazy = 0,
_TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)();
ret = lttng_probe_register(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER));
if (ret) {
- fprintf(stderr, "LTTng-UST: Error (%d) while registering tracepoint probe. Duplicate registration of tracepoint probes having the same name is not allowed.\n", ret);
+ fprintf(stderr, "LTTng-UST: Error (%d) while registering tracepoint probe.\n", ret);
abort();
}
}
projects / lttng-ust.git / blobdiff