X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=include%2Flttng%2Fust-tracepoint-event.h;h=ec292d24d4e96dbaaec8d111cbef69da50067634;hb=0fdd0b8989a06910521827f82058f7100d9b6b8e;hp=e914d97ed002f98dab33761a5607d1ed793b5602;hpb=39ad74cfd50e473190c5d83fd467089af6639d0f;p=lttng-ust.git diff --git a/include/lttng/ust-tracepoint-event.h b/include/lttng/ust-tracepoint-event.h index e914d97e..ec292d24 100644 --- a/include/lttng/ust-tracepoint-event.h +++ b/include/lttng/ust-tracepoint-event.h @@ -132,14 +132,14 @@ static const char \ #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), \ }, @@ -149,16 +149,36 @@ static const char \ #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 @@ -169,6 +189,7 @@ static const char \ #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 @@ -202,7 +223,9 @@ static const char \ }, #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) \ { \ .name = #_item, \ .type = \ @@ -212,7 +235,7 @@ static const char \ { \ .array = \ { \ - .elem_type = __type_integer(_type, BYTE_ORDER, 10, _encoding), \ + .elem_type = __type_integer(_type, _byte_order, _elem_type_base, _encoding), \ .length = _length, \ } \ } \ @@ -221,7 +244,7 @@ static const char \ }, #undef _ctf_sequence_encoded -#define _ctf_sequence_encoded(_type, _item, _src, \ +#define _ctf_sequence_encoded(_type, _item, _src, _byte_order, \ _length_type, _src_length, _encoding, _nowrite, \ _elem_type_base) \ { \ @@ -234,7 +257,7 @@ static const char \ .sequence = \ { \ .length_type = __type_integer(_length_type, BYTE_ORDER, 10, none), \ - .elem_type = __type_integer(_type, BYTE_ORDER, _elem_type_base, _encoding), \ + .elem_type = __type_integer(_type, _byte_order, _elem_type_base, _encoding), \ }, \ }, \ }, \ @@ -288,6 +311,7 @@ static const char \ #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 @@ -295,7 +319,7 @@ static const char \ 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 @@ -339,12 +363,13 @@ static void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); __event_len += sizeof(_type); #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) \ __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ __event_len += sizeof(_type) * (_length); #undef _ctf_sequence_encoded -#define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ +#define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ _src_length, _encoding, _nowrite, _elem_type_base) \ __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \ __event_len += sizeof(_length_type); \ @@ -486,7 +511,8 @@ size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS } #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); \ @@ -497,7 +523,7 @@ size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS } #undef _ctf_sequence_encoded -#define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ +#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); \ @@ -557,11 +583,12 @@ void __event_prepare_filter_stack__##_provider##___##_name(char *__stack_data,\ __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); #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) \ __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); #undef _ctf_sequence_encoded -#define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ +#define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ _src_length, _encoding, _nowrite, _elem_type_base) \ __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)); @@ -622,12 +649,13 @@ size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)) \ } #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) \ 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, \ +#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]; \ @@ -729,8 +757,8 @@ void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)) \ 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; \ \ @@ -797,7 +825,7 @@ void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)) \ #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 @@ -816,14 +844,29 @@ const char __tp_event_signature___##_provider##___##_name[] = \ /* Reset all macros within TRACEPOINT_EVENT */ #include +/* + * 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. * @@ -833,12 +876,27 @@ static const int *_loglevel___##__provider##___##__name = \ /* Reset all macros within TRACEPOINT_EVENT */ #include +/* + * 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. * @@ -858,12 +916,12 @@ static const int * \ 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 = { \ @@ -890,6 +948,7 @@ const struct lttng_event_desc __event_desc___##_provider##_##_name = { \ static const struct lttng_event_desc *_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)[] = { #include TRACEPOINT_INCLUDE + NULL, /* Dummy, C99 forbids 0-len array. */ }; @@ -903,7 +962,7 @@ static const struct lttng_event_desc *_TP_COMBINE_TOKENS(__event_desc___, TRACEP 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, @@ -948,7 +1007,7 @@ _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void) _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(); } }