X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=include%2Flttng%2Fust-tracepoint-event.h;h=520f8c061e02c041b07ad54979eb12b0db51a3a5;hb=e92f3e285939848f248af08f11a39a04a7fcf852;hp=58c46d80b90974652ce3eecfc3128b00da418cd8;hpb=f56cd1d5b4b28510fcbfc08ec3ba86ffdb62cb52;p=lttng-ust.git diff --git a/include/lttng/ust-tracepoint-event.h b/include/lttng/ust-tracepoint-event.h index 58c46d80..520f8c06 100644 --- a/include/lttng/ust-tracepoint-event.h +++ b/include/lttng/ust-tracepoint-event.h @@ -1,14 +1,15 @@ /* - * Copyright (c) 2011 - Mathieu Desnoyers + * Copyright (c) 2011-2012 - Mathieu Desnoyers * - * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED - * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * 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: * - * 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. + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. */ #include @@ -76,7 +77,7 @@ _TP_PARAMS(_args), \ _TP_PARAMS(_fields)) \ TRACEPOINT_EVENT_INSTANCE(_provider, _name, _name, \ - _TP_PARAMS(args)) + _TP_PARAMS(_args)) /* Helpers */ #define _TP_ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) @@ -434,49 +435,26 @@ static void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args))\ #undef __get_dynamic_len /* - * Stage 6.1 of tracepoint event generation. + * Stage 5.1 of tracepoint event generation. * - * Tracepoint loglevel enumeration definition generation. + * Create probe signature */ /* Reset all macros within TRACEPOINT_EVENT */ #include -#undef TRACEPOINT_LOGLEVEL_ENUM -#define TRACEPOINT_LOGLEVEL_ENUM(...) __VA_ARGS__ - -#undef tp_loglevel -#define tp_loglevel(_identifier, _value) \ -static const struct tracepoint_loglevel_entry \ - _TP_COMBINE_TOKENS4(__tp_loglevel_entry__, TRACEPOINT_PROVIDER, ___, _identifier) = { \ - .identifier = #_identifier, \ - .value = (_value), \ - }; - -#include TRACEPOINT_INCLUDE - -/* - * Stage 6.2 of tracepoint event generation. - * - * Tracepoint loglevel enumeration array generation. - */ - -/* Reset all macros within TRACEPOINT_EVENT */ -#include - -#undef TRACEPOINT_LOGLEVEL_ENUM -#define TRACEPOINT_LOGLEVEL_ENUM(...) __VA_ARGS__ +#undef TP_ARGS +#define TP_ARGS(args...) #args -#undef tp_loglevel -#define tp_loglevel(_identifier, _value) \ - &_TP_COMBINE_TOKENS4(__tp_loglevel_entry__, TRACEPOINT_PROVIDER, ___, _identifier), \ +#undef TRACEPOINT_EVENT_CLASS +#define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ +const char __tp_event_signature___##_provider##___##_name[] = \ + _args; -static const struct tracepoint_loglevel_entry *_TP_COMBINE_TOKENS(__tracepoint_loglevel_enum__, TRACEPOINT_PROVIDER)[] = { #include TRACEPOINT_INCLUDE -}; /* - * Stage 7 of tracepoint event generation. + * 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 @@ -488,15 +466,15 @@ static const struct tracepoint_loglevel_entry *_TP_COMBINE_TOKENS(__tracepoint_l #include #undef TRACEPOINT_LOGLEVEL -#define TRACEPOINT_LOGLEVEL(__provider, __name, __loglevel) \ -static const struct tracepoint_loglevel_entry * \ - _loglevel_mapping___##__provider##___##__name = \ - &__tp_loglevel_entry__##__provider##___##__loglevel; +#define TRACEPOINT_LOGLEVEL(__provider, __name, __loglevel) \ +static const int _loglevel_value___##__provider##___##__name = __loglevel; \ +static const int *_loglevel___##__provider##___##__name = \ + &_loglevel_value___##__provider##___##__name; #include TRACEPOINT_INCLUDE /* - * Stage 8.1 of tracepoint event generation. + * Stage 7.1 of tracepoint event generation. * * Create events description structures. We use a weakref because * loglevels are optional. If not declared, the event will point to the @@ -508,21 +486,22 @@ static const struct tracepoint_loglevel_entry * \ #undef TRACEPOINT_EVENT_INSTANCE #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ -static const struct tracepoint_loglevel_entry * \ - __ref_loglevel_mapping___##_provider##___##_name \ - __attribute__((weakref ("_loglevel_mapping___" #_provider "___" #_name))); \ +static const int * \ + __ref_loglevel___##_provider##___##_name \ + __attribute__((weakref ("_loglevel___" #_provider "___" #_name))); \ const struct lttng_event_desc __event_desc___##_provider##_##_name = { \ .fields = __event_fields___##_provider##___##_template, \ .name = #_provider ":" #_name, \ .probe_callback = (void *) &__event_probe__##_provider##___##_template,\ .nr_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_template), \ - .loglevel = &__ref_loglevel_mapping___##_provider##___##_name, \ + .loglevel = &__ref_loglevel___##_provider##___##_name, \ + .signature = __tp_event_signature___##_provider##___##_template, \ }; #include TRACEPOINT_INCLUDE /* - * Stage 8.2 of tracepoint event generation. + * Stage 7.2 of tracepoint event generation. * * Create array of events. */ @@ -540,7 +519,7 @@ static const struct lttng_event_desc *_TP_COMBINE_TOKENS(__event_desc___, TRACEP /* - * Stage 9 of tracepoint event generation. + * Stage 8 of tracepoint event generation. * * Create a toplevel descriptor for the whole probe. */ @@ -550,19 +529,19 @@ static struct lttng_probe_desc _TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PR .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)), - .loglevels = _TP_COMBINE_TOKENS(__tracepoint_loglevel_enum__, TRACEPOINT_PROVIDER), - .nr_loglevels = _TP_ARRAY_SIZE(_TP_COMBINE_TOKENS(__tracepoint_loglevel_enum__, TRACEPOINT_PROVIDER)), }; /* - * Stage 10 of tracepoint event generation. + * 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. */ /* Reset all macros within TRACEPOINT_EVENT */ #include - static void __attribute__((constructor)) _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void) { @@ -577,3 +556,5 @@ _TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void) { ltt_probe_unregister(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)); } + +int _TP_COMBINE_TOKENS(__tracepoint_provider_, TRACEPOINT_PROVIDER);