X-Git-Url: http://git.lttng.org/?p=lttng-ust.git;a=blobdiff_plain;f=include%2Flttng%2Ftracepoint.h;h=9342c5c1f5a09e1c2db375b285f4679c5e81c22a;hp=31cafe4df3be4d5512c787dec2eec896a45e9a77;hb=HEAD;hpb=62eb90f370c02ef86b20f02892b0c0b76bd6f048 diff --git a/include/lttng/tracepoint.h b/include/lttng/tracepoint.h index 31cafe4d..9342c5c1 100644 --- a/include/lttng/tracepoint.h +++ b/include/lttng/tracepoint.h @@ -1,26 +1,33 @@ -/* - * SPDX-License-Identifier: MIT - * - * Copyright (C) 2011-2012 Mathieu Desnoyers - */ +// SPDX-FileCopyrightText: 2011-2012 Mathieu Desnoyers +// +// SPDX-License-Identifier: MIT -#ifndef _LTTNG_TRACEPOINT_H -#define _LTTNG_TRACEPOINT_H +#ifndef _LTTNG_UST_TRACEPOINT_H +#define _LTTNG_UST_TRACEPOINT_H #include #include #include #include +#include +#include +#include + #include #include #include /* for dlopen */ #include /* for memset */ +#include #include /* for sdt */ #include #include #include +#if (defined(__cplusplus) && (__cplusplus <= 199711L)) +#error "C++11 support is required to build tracepoints and providers as C++" +#endif + #define LTTNG_UST_TRACEPOINT_NAME_LEN_MAX 256 #ifdef LTTNG_UST_HAVE_SDT_INTEGRATION @@ -31,16 +38,16 @@ */ #include -#define _LTTNG_UST_SDT_NARG(...) \ - __LTTNG_UST_SDT_NARG(__VA_ARGS__, 12,11,10,9,8,7,6,5,4,3,2,1,0) +#define LTTNG_UST__SDT_NARG(...) \ + LTTNG_UST___SDT_NARG(__VA_ARGS__, 12,11,10,9,8,7,6,5,4,3,2,1,0) -#define __LTTNG_UST_SDT_NARG(_0,_1,_2,_3,_4,_5,_6,_7,_8,_9,_10,_11,_12, N, ...) N +#define LTTNG_UST___SDT_NARG(_0,_1,_2,_3,_4,_5,_6,_7,_8,_9,_10,_11,_12, N, ...) N -#define _LTTNG_UST_SDT_PROBE_N(provider, name, N, ...) \ +#define LTTNG_UST__SDT_PROBE_N(provider, name, N, ...) \ _SDT_PROBE(provider, name, N, (__VA_ARGS__)) #define LTTNG_UST_STAP_PROBEV(provider, name, ...) \ - _LTTNG_UST_SDT_PROBE_N(provider, name, _LTTNG_UST_SDT_NARG(0, ##__VA_ARGS__), ##__VA_ARGS__) + LTTNG_UST__SDT_PROBE_N(provider, name, LTTNG_UST__SDT_NARG(0, ##__VA_ARGS__), ##__VA_ARGS__) #else #define LTTNG_UST_STAP_PROBEV(...) @@ -51,10 +58,10 @@ extern "C" { #endif #define lttng_ust_tracepoint_enabled(provider, name) \ - caa_unlikely(CMM_LOAD_SHARED(__tracepoint_##provider##___##name.state)) + caa_unlikely(CMM_LOAD_SHARED(lttng_ust_tracepoint_##provider##___##name.state)) #define lttng_ust_do_tracepoint(provider, name, ...) \ - __tracepoint_cb_##provider##___##name(__VA_ARGS__) + lttng_ust_tracepoint_cb_##provider##___##name(__VA_ARGS__) #define lttng_ust_tracepoint(provider, name, ...) \ do { \ @@ -71,91 +78,91 @@ extern "C" { * fine too). * Each tuple is also separated by a comma. */ -#define __TP_COMBINE_TOKENS(_tokena, _tokenb) \ +#define LTTNG_UST___TP_COMBINE_TOKENS(_tokena, _tokenb) \ _tokena##_tokenb -#define _TP_COMBINE_TOKENS(_tokena, _tokenb) \ - __TP_COMBINE_TOKENS(_tokena, _tokenb) -#define __TP_COMBINE_TOKENS3(_tokena, _tokenb, _tokenc) \ +#define LTTNG_UST__TP_COMBINE_TOKENS(_tokena, _tokenb) \ + LTTNG_UST___TP_COMBINE_TOKENS(_tokena, _tokenb) +#define LTTNG_UST___TP_COMBINE_TOKENS3(_tokena, _tokenb, _tokenc) \ _tokena##_tokenb##_tokenc -#define _TP_COMBINE_TOKENS3(_tokena, _tokenb, _tokenc) \ - __TP_COMBINE_TOKENS3(_tokena, _tokenb, _tokenc) -#define __TP_COMBINE_TOKENS4(_tokena, _tokenb, _tokenc, _tokend) \ +#define LTTNG_UST__TP_COMBINE_TOKENS3(_tokena, _tokenb, _tokenc) \ + LTTNG_UST___TP_COMBINE_TOKENS3(_tokena, _tokenb, _tokenc) +#define LTTNG_UST___TP_COMBINE_TOKENS4(_tokena, _tokenb, _tokenc, _tokend) \ _tokena##_tokenb##_tokenc##_tokend -#define _TP_COMBINE_TOKENS4(_tokena, _tokenb, _tokenc, _tokend) \ - __TP_COMBINE_TOKENS4(_tokena, _tokenb, _tokenc, _tokend) +#define LTTNG_UST__TP_COMBINE_TOKENS4(_tokena, _tokenb, _tokenc, _tokend) \ + LTTNG_UST___TP_COMBINE_TOKENS4(_tokena, _tokenb, _tokenc, _tokend) /* - * _TP_EXVAR* extract the var names. - * _TP_EXVAR1 and _TP_EXDATA_VAR1 are needed for -std=c99. + * LTTNG_UST__TP_EXVAR* extract the var names. + * LTTNG_UST__TP_EXVAR1 and LTTNG_UST__TP_EXDATA_VAR1 are needed for -std=c99. */ -#define _TP_EXVAR0() -#define _TP_EXVAR1(a) -#define _TP_EXVAR2(a,b) b -#define _TP_EXVAR4(a,b,c,d) b,d -#define _TP_EXVAR6(a,b,c,d,e,f) b,d,f -#define _TP_EXVAR8(a,b,c,d,e,f,g,h) b,d,f,h -#define _TP_EXVAR10(a,b,c,d,e,f,g,h,i,j) b,d,f,h,j -#define _TP_EXVAR12(a,b,c,d,e,f,g,h,i,j,k,l) b,d,f,h,j,l -#define _TP_EXVAR14(a,b,c,d,e,f,g,h,i,j,k,l,m,n) b,d,f,h,j,l,n -#define _TP_EXVAR16(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) b,d,f,h,j,l,n,p -#define _TP_EXVAR18(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r) b,d,f,h,j,l,n,p,r -#define _TP_EXVAR20(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t) b,d,f,h,j,l,n,p,r,t - -#define _TP_EXDATA_VAR0() __tp_data -#define _TP_EXDATA_VAR1(a) __tp_data -#define _TP_EXDATA_VAR2(a,b) __tp_data,b -#define _TP_EXDATA_VAR4(a,b,c,d) __tp_data,b,d -#define _TP_EXDATA_VAR6(a,b,c,d,e,f) __tp_data,b,d,f -#define _TP_EXDATA_VAR8(a,b,c,d,e,f,g,h) __tp_data,b,d,f,h -#define _TP_EXDATA_VAR10(a,b,c,d,e,f,g,h,i,j) __tp_data,b,d,f,h,j -#define _TP_EXDATA_VAR12(a,b,c,d,e,f,g,h,i,j,k,l) __tp_data,b,d,f,h,j,l -#define _TP_EXDATA_VAR14(a,b,c,d,e,f,g,h,i,j,k,l,m,n) __tp_data,b,d,f,h,j,l,n -#define _TP_EXDATA_VAR16(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) __tp_data,b,d,f,h,j,l,n,p -#define _TP_EXDATA_VAR18(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r) __tp_data,b,d,f,h,j,l,n,p,r -#define _TP_EXDATA_VAR20(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t) __tp_data,b,d,f,h,j,l,n,p,r,t +#define LTTNG_UST__TP_EXVAR0() +#define LTTNG_UST__TP_EXVAR1(a) +#define LTTNG_UST__TP_EXVAR2(a,b) b +#define LTTNG_UST__TP_EXVAR4(a,b,c,d) b,d +#define LTTNG_UST__TP_EXVAR6(a,b,c,d,e,f) b,d,f +#define LTTNG_UST__TP_EXVAR8(a,b,c,d,e,f,g,h) b,d,f,h +#define LTTNG_UST__TP_EXVAR10(a,b,c,d,e,f,g,h,i,j) b,d,f,h,j +#define LTTNG_UST__TP_EXVAR12(a,b,c,d,e,f,g,h,i,j,k,l) b,d,f,h,j,l +#define LTTNG_UST__TP_EXVAR14(a,b,c,d,e,f,g,h,i,j,k,l,m,n) b,d,f,h,j,l,n +#define LTTNG_UST__TP_EXVAR16(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) b,d,f,h,j,l,n,p +#define LTTNG_UST__TP_EXVAR18(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r) b,d,f,h,j,l,n,p,r +#define LTTNG_UST__TP_EXVAR20(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t) b,d,f,h,j,l,n,p,r,t + +#define LTTNG_UST__TP_EXDATA_VAR0() __tp_data +#define LTTNG_UST__TP_EXDATA_VAR1(a) __tp_data +#define LTTNG_UST__TP_EXDATA_VAR2(a,b) __tp_data,b +#define LTTNG_UST__TP_EXDATA_VAR4(a,b,c,d) __tp_data,b,d +#define LTTNG_UST__TP_EXDATA_VAR6(a,b,c,d,e,f) __tp_data,b,d,f +#define LTTNG_UST__TP_EXDATA_VAR8(a,b,c,d,e,f,g,h) __tp_data,b,d,f,h +#define LTTNG_UST__TP_EXDATA_VAR10(a,b,c,d,e,f,g,h,i,j) __tp_data,b,d,f,h,j +#define LTTNG_UST__TP_EXDATA_VAR12(a,b,c,d,e,f,g,h,i,j,k,l) __tp_data,b,d,f,h,j,l +#define LTTNG_UST__TP_EXDATA_VAR14(a,b,c,d,e,f,g,h,i,j,k,l,m,n) __tp_data,b,d,f,h,j,l,n +#define LTTNG_UST__TP_EXDATA_VAR16(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) __tp_data,b,d,f,h,j,l,n,p +#define LTTNG_UST__TP_EXDATA_VAR18(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r) __tp_data,b,d,f,h,j,l,n,p,r +#define LTTNG_UST__TP_EXDATA_VAR20(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t) __tp_data,b,d,f,h,j,l,n,p,r,t /* - * _TP_EXPROTO* extract tuples of type, var. - * _TP_EXPROTO1 and _TP_EXDATA_PROTO1 are needed for -std=c99. + * LTTNG_UST__TP_EXPROTO* extract tuples of type, var. + * LTTNG_UST__TP_EXPROTO1 and LTTNG_UST__TP_EXDATA_PROTO1 are needed for -std=c99. */ -#define _TP_EXPROTO0() void -#define _TP_EXPROTO1(a) void -#define _TP_EXPROTO2(a,b) a b -#define _TP_EXPROTO4(a,b,c,d) a b,c d -#define _TP_EXPROTO6(a,b,c,d,e,f) a b,c d,e f -#define _TP_EXPROTO8(a,b,c,d,e,f,g,h) a b,c d,e f,g h -#define _TP_EXPROTO10(a,b,c,d,e,f,g,h,i,j) a b,c d,e f,g h,i j -#define _TP_EXPROTO12(a,b,c,d,e,f,g,h,i,j,k,l) a b,c d,e f,g h,i j,k l -#define _TP_EXPROTO14(a,b,c,d,e,f,g,h,i,j,k,l,m,n) a b,c d,e f,g h,i j,k l,m n -#define _TP_EXPROTO16(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) a b,c d,e f,g h,i j,k l,m n,o p -#define _TP_EXPROTO18(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r) a b,c d,e f,g h,i j,k l,m n,o p,q r -#define _TP_EXPROTO20(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t) a b,c d,e f,g h,i j,k l,m n,o p,q r,s t - -#define _TP_EXDATA_PROTO0() void *__tp_data -#define _TP_EXDATA_PROTO1(a) void *__tp_data -#define _TP_EXDATA_PROTO2(a,b) void *__tp_data,a b -#define _TP_EXDATA_PROTO4(a,b,c,d) void *__tp_data,a b,c d -#define _TP_EXDATA_PROTO6(a,b,c,d,e,f) void *__tp_data,a b,c d,e f -#define _TP_EXDATA_PROTO8(a,b,c,d,e,f,g,h) void *__tp_data,a b,c d,e f,g h -#define _TP_EXDATA_PROTO10(a,b,c,d,e,f,g,h,i,j) void *__tp_data,a b,c d,e f,g h,i j -#define _TP_EXDATA_PROTO12(a,b,c,d,e,f,g,h,i,j,k,l) void *__tp_data,a b,c d,e f,g h,i j,k l -#define _TP_EXDATA_PROTO14(a,b,c,d,e,f,g,h,i,j,k,l,m,n) void *__tp_data,a b,c d,e f,g h,i j,k l,m n -#define _TP_EXDATA_PROTO16(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) void *__tp_data,a b,c d,e f,g h,i j,k l,m n,o p -#define _TP_EXDATA_PROTO18(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r) void *__tp_data,a b,c d,e f,g h,i j,k l,m n,o p,q r -#define _TP_EXDATA_PROTO20(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t) void *__tp_data,a b,c d,e f,g h,i j,k l,m n,o p,q r,s t +#define LTTNG_UST__TP_EXPROTO0() void +#define LTTNG_UST__TP_EXPROTO1(a) void +#define LTTNG_UST__TP_EXPROTO2(a,b) a b +#define LTTNG_UST__TP_EXPROTO4(a,b,c,d) a b,c d +#define LTTNG_UST__TP_EXPROTO6(a,b,c,d,e,f) a b,c d,e f +#define LTTNG_UST__TP_EXPROTO8(a,b,c,d,e,f,g,h) a b,c d,e f,g h +#define LTTNG_UST__TP_EXPROTO10(a,b,c,d,e,f,g,h,i,j) a b,c d,e f,g h,i j +#define LTTNG_UST__TP_EXPROTO12(a,b,c,d,e,f,g,h,i,j,k,l) a b,c d,e f,g h,i j,k l +#define LTTNG_UST__TP_EXPROTO14(a,b,c,d,e,f,g,h,i,j,k,l,m,n) a b,c d,e f,g h,i j,k l,m n +#define LTTNG_UST__TP_EXPROTO16(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) a b,c d,e f,g h,i j,k l,m n,o p +#define LTTNG_UST__TP_EXPROTO18(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r) a b,c d,e f,g h,i j,k l,m n,o p,q r +#define LTTNG_UST__TP_EXPROTO20(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t) a b,c d,e f,g h,i j,k l,m n,o p,q r,s t + +#define LTTNG_UST__TP_EXDATA_PROTO0() void *__tp_data +#define LTTNG_UST__TP_EXDATA_PROTO1(a) void *__tp_data +#define LTTNG_UST__TP_EXDATA_PROTO2(a,b) void *__tp_data,a b +#define LTTNG_UST__TP_EXDATA_PROTO4(a,b,c,d) void *__tp_data,a b,c d +#define LTTNG_UST__TP_EXDATA_PROTO6(a,b,c,d,e,f) void *__tp_data,a b,c d,e f +#define LTTNG_UST__TP_EXDATA_PROTO8(a,b,c,d,e,f,g,h) void *__tp_data,a b,c d,e f,g h +#define LTTNG_UST__TP_EXDATA_PROTO10(a,b,c,d,e,f,g,h,i,j) void *__tp_data,a b,c d,e f,g h,i j +#define LTTNG_UST__TP_EXDATA_PROTO12(a,b,c,d,e,f,g,h,i,j,k,l) void *__tp_data,a b,c d,e f,g h,i j,k l +#define LTTNG_UST__TP_EXDATA_PROTO14(a,b,c,d,e,f,g,h,i,j,k,l,m,n) void *__tp_data,a b,c d,e f,g h,i j,k l,m n +#define LTTNG_UST__TP_EXDATA_PROTO16(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) void *__tp_data,a b,c d,e f,g h,i j,k l,m n,o p +#define LTTNG_UST__TP_EXDATA_PROTO18(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r) void *__tp_data,a b,c d,e f,g h,i j,k l,m n,o p,q r +#define LTTNG_UST__TP_EXDATA_PROTO20(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t) void *__tp_data,a b,c d,e f,g h,i j,k l,m n,o p,q r,s t /* Preprocessor trick to count arguments. Inspired from sdt.h. */ -#define _TP_NARGS(...) __TP_NARGS(__VA_ARGS__, 20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0) -#define __TP_NARGS(_0,_1,_2,_3,_4,_5,_6,_7,_8,_9,_10,_11,_12,_13,_14,_15,_16,_17,_18,_19,_20, N, ...) N -#define _TP_PROTO_N(N, ...) _TP_PARAMS(_TP_COMBINE_TOKENS(_TP_EXPROTO, N)(__VA_ARGS__)) -#define _TP_VAR_N(N, ...) _TP_PARAMS(_TP_COMBINE_TOKENS(_TP_EXVAR, N)(__VA_ARGS__)) -#define _TP_DATA_PROTO_N(N, ...) _TP_PARAMS(_TP_COMBINE_TOKENS(_TP_EXDATA_PROTO, N)(__VA_ARGS__)) -#define _TP_DATA_VAR_N(N, ...) _TP_PARAMS(_TP_COMBINE_TOKENS(_TP_EXDATA_VAR, N)(__VA_ARGS__)) -#define _TP_ARGS_PROTO(...) _TP_PROTO_N(_TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__) -#define _TP_ARGS_VAR(...) _TP_VAR_N(_TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__) -#define _TP_ARGS_DATA_PROTO(...) _TP_DATA_PROTO_N(_TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__) -#define _TP_ARGS_DATA_VAR(...) _TP_DATA_VAR_N(_TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__) -#define _TP_PARAMS(...) __VA_ARGS__ +#define LTTNG_UST__TP_NARGS(...) LTTNG_UST___TP_NARGS(__VA_ARGS__, 20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0) +#define LTTNG_UST___TP_NARGS(_0,_1,_2,_3,_4,_5,_6,_7,_8,_9,_10,_11,_12,_13,_14,_15,_16,_17,_18,_19,_20, N, ...) N +#define LTTNG_UST__TP_PROTO_N(N, ...) LTTNG_UST__TP_PARAMS(LTTNG_UST__TP_COMBINE_TOKENS(LTTNG_UST__TP_EXPROTO, N)(__VA_ARGS__)) +#define LTTNG_UST__TP_VAR_N(N, ...) LTTNG_UST__TP_PARAMS(LTTNG_UST__TP_COMBINE_TOKENS(LTTNG_UST__TP_EXVAR, N)(__VA_ARGS__)) +#define LTTNG_UST__TP_DATA_PROTO_N(N, ...) LTTNG_UST__TP_PARAMS(LTTNG_UST__TP_COMBINE_TOKENS(LTTNG_UST__TP_EXDATA_PROTO, N)(__VA_ARGS__)) +#define LTTNG_UST__TP_DATA_VAR_N(N, ...) LTTNG_UST__TP_PARAMS(LTTNG_UST__TP_COMBINE_TOKENS(LTTNG_UST__TP_EXDATA_VAR, N)(__VA_ARGS__)) +#define LTTNG_UST__TP_ARGS_PROTO(...) LTTNG_UST__TP_PROTO_N(LTTNG_UST__TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__) +#define LTTNG_UST__TP_ARGS_VAR(...) LTTNG_UST__TP_VAR_N(LTTNG_UST__TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__) +#define LTTNG_UST__TP_ARGS_DATA_PROTO(...) LTTNG_UST__TP_DATA_PROTO_N(LTTNG_UST__TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__) +#define LTTNG_UST__TP_ARGS_DATA_VAR(...) LTTNG_UST__TP_DATA_VAR_N(LTTNG_UST__TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__) +#define LTTNG_UST__TP_PARAMS(...) __VA_ARGS__ /* * sizeof(#_provider) - 1 : length of the provider string (excluding \0). @@ -182,58 +189,72 @@ extern "C" { * address. */ #define LTTNG_UST__DECLARE_TRACEPOINT(_provider, _name, ...) \ -extern struct lttng_ust_tracepoint __tracepoint_##_provider##___##_name; \ +extern struct lttng_ust_tracepoint lttng_ust_tracepoint_##_provider##___##_name \ + LTTNG_UST__TRACEPOINT_DEFINITION_VISIBILITY; \ static inline \ -void __tracepoint_cb_##_provider##___##_name(_TP_ARGS_PROTO(__VA_ARGS__)) \ +void lttng_ust_tracepoint_cb_##_provider##___##_name(LTTNG_UST__TP_ARGS_PROTO(__VA_ARGS__)) \ __attribute__((always_inline, unused)) lttng_ust_notrace; \ static \ -void __tracepoint_cb_##_provider##___##_name(_TP_ARGS_PROTO(__VA_ARGS__)) \ +void lttng_ust_tracepoint_cb_##_provider##___##_name(LTTNG_UST__TP_ARGS_PROTO(__VA_ARGS__)) \ { \ struct lttng_ust_tracepoint_probe *__tp_probe; \ \ - if (caa_unlikely(!TP_RCU_LINK_TEST())) \ + if (caa_unlikely(!LTTNG_UST_TP_RCU_LINK_TEST())) \ return; \ - tp_rcu_read_lock(); \ - __tp_probe = tp_rcu_dereference(__tracepoint_##_provider##___##_name.probes); \ + lttng_ust_tp_rcu_read_lock(); \ + __tp_probe = lttng_ust_tp_rcu_dereference(lttng_ust_tracepoint_##_provider##___##_name.probes); \ if (caa_unlikely(!__tp_probe)) \ goto end; \ do { \ void (*__tp_cb)(void) = __tp_probe->func; \ void *__tp_data = __tp_probe->data; \ \ - URCU_FORCE_CAST(void (*)(_TP_ARGS_DATA_PROTO(__VA_ARGS__)), __tp_cb) \ - (_TP_ARGS_DATA_VAR(__VA_ARGS__)); \ + URCU_FORCE_CAST(void (*)(LTTNG_UST__TP_ARGS_DATA_PROTO(__VA_ARGS__)), __tp_cb) \ + (LTTNG_UST__TP_ARGS_DATA_VAR(__VA_ARGS__)); \ } while ((++__tp_probe)->func); \ end: \ - tp_rcu_read_unlock(); \ + lttng_ust_tp_rcu_read_unlock(); \ } \ static inline \ -void __tracepoint_register_##_provider##___##_name(char *provider_name, char *event_name, \ +void lttng_ust_tracepoint_register_##_provider##___##_name(char *provider_name, char *event_name, \ void (*func)(void), void *data) \ lttng_ust_notrace; \ static inline \ -void __tracepoint_register_##_provider##___##_name(char *provider_name, char *event_name, \ +void lttng_ust_tracepoint_register_##_provider##___##_name(char *provider_name, char *event_name, \ void (*func)(void), void *data) \ { \ - __tracepoint_probe_register(provider_name, event_name, func, data, \ - __tracepoint_##_provider##___##_name.signature); \ + lttng_ust_tracepoint_provider_register(provider_name, event_name, func, data, \ + lttng_ust_tracepoint_##_provider##___##_name.signature); \ } \ static inline \ -void __tracepoint_unregister_##_provider##___##_name(char *provider_name, char *event_name, \ +void lttng_ust_tracepoint_unregister_##_provider##___##_name(char *provider_name, char *event_name, \ void (*func)(void), void *data) \ lttng_ust_notrace; \ static inline \ -void __tracepoint_unregister_##_provider##___##_name(char *provider_name, char *event_name, \ +void lttng_ust_tracepoint_unregister_##_provider##___##_name(char *provider_name, char *event_name, \ void (*func)(void), void *data) \ { \ - __tracepoint_probe_unregister(provider_name, event_name, func, data); \ + lttng_ust_tracepoint_provider_unregister(provider_name, event_name, func, data); \ } -extern int __tracepoint_probe_register(const char *provider_name, const char *event_name, +/* + * Registration of tracepoint provider probe functions with + * lttng_ust_tracepoint_provider_register, unregistration with + * lttng_ust_tracepoint_provider_unregister. + */ +int lttng_ust_tracepoint_provider_register(const char *provider_name, const char *event_name, void (*func)(void), void *data, const char *signature); -extern int __tracepoint_probe_unregister(const char *provider_name, const char *event_name, +int lttng_ust_tracepoint_provider_unregister(const char *provider_name, const char *event_name, void (*func)(void), void *data); +/* + * Registration of tracepoint instrumentation modules with lttng_ust_tracepoint_module_register, + * unregistration with lttng_ust_tracepoint_module_unregister. + */ +int lttng_ust_tracepoint_module_register(struct lttng_ust_tracepoint * const *tracepoints_start, + int tracepoints_count); +int lttng_ust_tracepoint_module_unregister(struct lttng_ust_tracepoint * const *tracepoints_start); + /* * tracepoint dynamic linkage handling (callbacks). Hidden visibility: * shared across objects in a module/main executable. @@ -251,9 +272,9 @@ struct lttng_ust_tracepoint_dlopen { void *liblttngust_handle; - int (*tracepoint_register_lib)(struct lttng_ust_tracepoint * const *tracepoints_start, + int (*lttng_ust_tracepoint_module_register)(struct lttng_ust_tracepoint * const *tracepoints_start, int tracepoints_count); - int (*tracepoint_unregister_lib)(struct lttng_ust_tracepoint * const *tracepoints_start); + int (*lttng_ust_tracepoint_module_unregister)(struct lttng_ust_tracepoint * const *tracepoints_start); void (*rcu_read_lock_sym)(void); void (*rcu_read_unlock_sym)(void); void *(*rcu_dereference_sym)(void *p); @@ -269,9 +290,9 @@ extern struct lttng_ust_tracepoint_dlopen *lttng_ust_tracepoint_dlopen_ptr; * registering only _one_ instance of the tracepoints per shared-ojbect * (or for the whole main program). */ -int __tracepoint_registered +int lttng_ust_tracepoint_registered __attribute__((weak, visibility("hidden"))); -int __tracepoint_ptrs_registered +int lttng_ust_tracepoint_ptrs_registered __attribute__((weak, visibility("hidden"))); struct lttng_ust_tracepoint_dlopen lttng_ust_tracepoint_dlopen __attribute__((weak, visibility("hidden"))) = { @@ -335,10 +356,10 @@ static inline void tracepoint_disable_destructors(void) #ifndef _LGPL_SOURCE static inline void -__tracepoint__init_urcu_sym(void) +lttng_ust_tracepoint__init_urcu_sym(void) lttng_ust_notrace; static inline void -__tracepoint__init_urcu_sym(void) +lttng_ust_tracepoint__init_urcu_sym(void) { if (!lttng_ust_tracepoint_dlopen_ptr) lttng_ust_tracepoint_dlopen_ptr = <tng_ust_tracepoint_dlopen; @@ -350,38 +371,87 @@ __tracepoint__init_urcu_sym(void) lttng_ust_tracepoint_dlopen_ptr->rcu_read_lock_sym = URCU_FORCE_CAST(void (*)(void), dlsym(lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle, - "tp_rcu_read_lock")); + "lttng_ust_tp_rcu_read_lock")); if (!lttng_ust_tracepoint_dlopen_ptr->rcu_read_unlock_sym) lttng_ust_tracepoint_dlopen_ptr->rcu_read_unlock_sym = URCU_FORCE_CAST(void (*)(void), dlsym(lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle, - "tp_rcu_read_unlock")); + "lttng_ust_tp_rcu_read_unlock")); if (!lttng_ust_tracepoint_dlopen_ptr->rcu_dereference_sym) lttng_ust_tracepoint_dlopen_ptr->rcu_dereference_sym = URCU_FORCE_CAST(void *(*)(void *p), dlsym(lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle, - "tp_rcu_dereference_sym")); + "lttng_ust_tp_rcu_dereference_sym")); } #else static inline void -__tracepoint__init_urcu_sym(void) +lttng_ust_tracepoint__init_urcu_sym(void) lttng_ust_notrace; static inline void -__tracepoint__init_urcu_sym(void) +lttng_ust_tracepoint__init_urcu_sym(void) +{ +} +#endif + +/* + * Use getenv() directly and bypass lttng-ust helper functions + * because we may not have access to lttng-ust shared libraries. + */ +#ifdef LTTNG_UST_DEBUG +static inline +bool lttng_ust_tracepoint_logging_debug_enabled(void) +{ + return true; +} +#else /* #ifdef LTTNG_UST_DEBUG */ +static inline +bool lttng_ust_tracepoint_logging_debug_enabled(void) +{ + return getenv("LTTNG_UST_DEBUG"); +} +#endif /* #ifdef LTTNG_UST_DEBUG */ + +#ifdef LTTNG_UST_ABORT_ON_CRITICAL +static inline +bool lttng_ust_tracepoint_logging_abort_on_critical_enabled(void) +{ + return true; +} +#else /* #ifdef LTTNG_UST_ABORT_ON_CRITICAL */ +static inline +bool lttng_ust_tracepoint_logging_abort_on_critical_enabled(void) { + return getenv("LTTNG_UST_ABORT_ON_CRITICAL"); } #endif +#define LTTNG_UST_TRACEPOINT_THIS_IP \ + ({ __label__ here; here: &&here; }) + +static void +lttng_ust_tracepoints_print_disabled_message(void) +{ + if (lttng_ust_tracepoint_logging_debug_enabled()) + fprintf(stderr, "lttng-ust-tracepoint [%ld]: Critical: dlopen() failed to find '%s', tracepoints in this binary won't be registered. " + "(at addr=%p in %s() at " __FILE__ ":" lttng_ust_stringify(__LINE__) ")\n", + (long) getpid(), + LTTNG_UST_TRACEPOINT_LIB_SONAME, + LTTNG_UST_TRACEPOINT_THIS_IP, + __func__); + if (lttng_ust_tracepoint_logging_abort_on_critical_enabled()) + abort(); +} + static void -__tracepoints__init(void) - lttng_ust_notrace __attribute__((constructor)); +lttng_ust__tracepoints__init(void) + lttng_ust_notrace __attribute__((constructor(LTTNG_UST_CONSTRUCTOR_PRIO))); static void -__tracepoints__init(void) +lttng_ust__tracepoints__init(void) { - if (__tracepoint_registered++) { + if (lttng_ust_tracepoint_registered++) { if (!lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle) return; - __tracepoint__init_urcu_sym(); + lttng_ust_tracepoint__init_urcu_sym(); return; } @@ -390,20 +460,22 @@ __tracepoints__init(void) if (!lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle) lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle = dlopen(LTTNG_UST_TRACEPOINT_LIB_SONAME, RTLD_NOW | RTLD_GLOBAL); - if (!lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle) + if (!lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle) { + lttng_ust_tracepoints_print_disabled_message(); return; - __tracepoint__init_urcu_sym(); + } + lttng_ust_tracepoint__init_urcu_sym(); } static void -__tracepoints__destroy(void) - lttng_ust_notrace __attribute__((destructor)); +lttng_ust__tracepoints__destroy(void) + lttng_ust_notrace __attribute__((destructor(LTTNG_UST_CONSTRUCTOR_PRIO))); static void -__tracepoints__destroy(void) +lttng_ust__tracepoints__destroy(void) { int ret; - if (--__tracepoint_registered) + if (--lttng_ust_tracepoint_registered) return; if (!lttng_ust_tracepoint_dlopen_ptr) lttng_ust_tracepoint_dlopen_ptr = <tng_ust_tracepoint_dlopen; @@ -411,7 +483,7 @@ __tracepoints__destroy(void) lttng_ust_tracepoint_destructors_syms_ptr = <tng_ust_tracepoint_destructors_syms; if (!lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle) return; - if (__tracepoint_ptrs_registered) + if (lttng_ust_tracepoint_ptrs_registered) return; /* * Lookup if destructors must be executed using the new method. @@ -433,126 +505,166 @@ __tracepoints__destroy(void) memset(lttng_ust_tracepoint_dlopen_ptr, 0, sizeof(*lttng_ust_tracepoint_dlopen_ptr)); } -#ifdef TRACEPOINT_DEFINE +#if LTTNG_UST_COMPAT_API(0) +# if defined(TRACEPOINT_DEFINE) && !defined(LTTNG_UST_TRACEPOINT_DEFINE) +# define LTTNG_UST_TRACEPOINT_DEFINE +# endif +#endif /* #if LTTNG_UST_COMPAT_API(0) */ + +#if LTTNG_UST_COMPAT_API(0) +#define tracepoint lttng_ust_tracepoint +#define do_tracepoint lttng_ust_do_tracepoint +#define tracepoint_enabled lttng_ust_tracepoint_enabled +#define TP_ARGS LTTNG_UST_TP_ARGS +#endif /* #if LTTNG_UST_COMPAT_API(0) */ + +#ifdef __cplusplus +} +#endif + +#endif /* _LTTNG_UST_TRACEPOINT_H */ + +/* The following declarations must be outside re-inclusion protection. */ + +#ifdef LTTNG_UST_TRACEPOINT_DEFINE + +#ifndef _LTTNG_UST_TRACEPOINT_DEFINE_ONCE +#define _LTTNG_UST_TRACEPOINT_DEFINE_ONCE + +#ifdef __cplusplus +extern "C" { +#endif /* * These weak symbols, the constructor, and destructor take care of * registering only _one_ instance of the tracepoints per shared-ojbect * (or for the whole main program). */ -extern struct lttng_ust_tracepoint * const __start___tracepoints_ptrs[] +extern struct lttng_ust_tracepoint * const __start_lttng_ust_tracepoints_ptrs[] __attribute__((weak, visibility("hidden"))); -extern struct lttng_ust_tracepoint * const __stop___tracepoints_ptrs[] +extern struct lttng_ust_tracepoint * const __stop_lttng_ust_tracepoints_ptrs[] __attribute__((weak, visibility("hidden"))); /* - * When TRACEPOINT_PROBE_DYNAMIC_LINKAGE is defined, we do not emit a + * When LTTNG_UST_TRACEPOINT_PROBE_DYNAMIC_LINKAGE is defined, we do not emit a * unresolved symbol that requires the provider to be linked in. When - * TRACEPOINT_PROBE_DYNAMIC_LINKAGE is not defined, we emit an + * LTTNG_UST_TRACEPOINT_PROBE_DYNAMIC_LINKAGE is not defined, we emit an * unresolved symbol that depends on having the provider linked in, * otherwise the linker complains. This deals with use of static * libraries, ensuring that the linker does not remove the provider * object from the executable. */ -#ifdef TRACEPOINT_PROBE_DYNAMIC_LINKAGE -#define _TRACEPOINT_UNDEFINED_REF(provider) NULL -#else /* TRACEPOINT_PROBE_DYNAMIC_LINKAGE */ -#define _TRACEPOINT_UNDEFINED_REF(provider) &__tracepoint_provider_##provider -#endif /* TRACEPOINT_PROBE_DYNAMIC_LINKAGE */ + +#if LTTNG_UST_COMPAT_API(0) +# if defined(TRACEPOINT_PROBE_DYNAMIC_LINKAGE) && !defined(LTTNG_UST_TRACEPOINT_PROBE_DYNAMIC_LINKAGE) +# define LTTNG_UST_TRACEPOINT_PROBE_DYNAMIC_LINKAGE +# endif +#endif /* #if LTTNG_UST_COMPAT_API(0) */ + +#ifdef LTTNG_UST_TRACEPOINT_PROBE_DYNAMIC_LINKAGE +#define LTTNG_UST__TRACEPOINT_UNDEFINED_REF(provider) NULL +#else /* LTTNG_UST_TRACEPOINT_PROBE_DYNAMIC_LINKAGE */ +#define LTTNG_UST__TRACEPOINT_UNDEFINED_REF(provider) <tng_ust_tracepoint_provider_##provider +#endif /* LTTNG_UST_TRACEPOINT_PROBE_DYNAMIC_LINKAGE */ /* * Note: to allow PIC code, we need to allow the linker to update the pointers - * in the __tracepoints_ptrs section. + * in the lttng_ust_tracepoints_ptrs section. * Therefore, this section is _not_ const (read-only). */ -#define _TP_EXTRACT_STRING(...) #__VA_ARGS__ +#define LTTNG_UST__TP_EXTRACT_STRING(...) #__VA_ARGS__ +#undef LTTNG_UST__DEFINE_TRACEPOINT #define LTTNG_UST__DEFINE_TRACEPOINT(_provider, _name, _args) \ lttng_ust_tracepoint_validate_name_len(_provider, _name); \ - extern int __tracepoint_provider_##_provider; \ - static const char __tp_provider_strtab_##_provider##___##_name[] \ - __attribute__((section("__tracepoints_strings"))) = \ + extern int lttng_ust_tracepoint_provider_##_provider \ + LTTNG_UST__TRACEPOINT_PROVIDER_DEFINITION_VISIBILITY; \ + static const char lttng_ust_tp_provider_strtab_##_provider##___##_name[] \ + __attribute__((section("lttng_ust_tracepoints_strings"))) = \ #_provider; \ - static const char __tp_name_strtab_##_provider##___##_name[] \ - __attribute__((section("__tracepoints_strings"))) = \ + static const char lttng_ust_tp_name_strtab_##_provider##___##_name[] \ + __attribute__((section("lttng_ust_tracepoints_strings"))) = \ #_name; \ - struct lttng_ust_tracepoint __tracepoint_##_provider##___##_name \ - __attribute__((section("__tracepoints"))) = { \ + struct lttng_ust_tracepoint lttng_ust_tracepoint_##_provider##___##_name \ + __attribute__((section("lttng_ust_tracepoints"))) \ + LTTNG_UST__TRACEPOINT_DEFINITION_VISIBILITY = { \ sizeof(struct lttng_ust_tracepoint), \ - __tp_provider_strtab_##_provider##___##_name, \ - __tp_name_strtab_##_provider##___##_name, \ + lttng_ust_tp_provider_strtab_##_provider##___##_name, \ + lttng_ust_tp_name_strtab_##_provider##___##_name, \ 0, \ NULL, \ - _TRACEPOINT_UNDEFINED_REF(_provider), \ - _TP_EXTRACT_STRING(_args), \ + LTTNG_UST__TRACEPOINT_UNDEFINED_REF(_provider), \ + LTTNG_UST__TP_EXTRACT_STRING(_args), \ }; \ static struct lttng_ust_tracepoint * \ - __tracepoint_ptr_##_provider##___##_name \ - __attribute__((section("__tracepoints_ptrs"), used)) \ + lttng_ust_tracepoint_ptr_##_provider##___##_name \ + __attribute__((section("lttng_ust_tracepoints_ptrs"), used)) \ __lttng_ust_variable_attribute_no_sanitize_address = \ - &__tracepoint_##_provider##___##_name; + <tng_ust_tracepoint_##_provider##___##_name; static void -__tracepoints__ptrs_init(void) - lttng_ust_notrace __attribute__((constructor)); +lttng_ust__tracepoints__ptrs_init(void) + lttng_ust_notrace __attribute__((constructor(LTTNG_UST_CONSTRUCTOR_PRIO))); static void -__tracepoints__ptrs_init(void) +lttng_ust__tracepoints__ptrs_init(void) { - if (__tracepoint_ptrs_registered++) + if (lttng_ust_tracepoint_ptrs_registered++) return; if (!lttng_ust_tracepoint_dlopen_ptr) lttng_ust_tracepoint_dlopen_ptr = <tng_ust_tracepoint_dlopen; if (!lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle) lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle = dlopen(LTTNG_UST_TRACEPOINT_LIB_SONAME, RTLD_NOW | RTLD_GLOBAL); - if (!lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle) + if (!lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle) { + lttng_ust_tracepoints_print_disabled_message(); return; + } if (!lttng_ust_tracepoint_destructors_syms_ptr) lttng_ust_tracepoint_destructors_syms_ptr = <tng_ust_tracepoint_destructors_syms; - lttng_ust_tracepoint_dlopen_ptr->tracepoint_register_lib = + lttng_ust_tracepoint_dlopen_ptr->lttng_ust_tracepoint_module_register = URCU_FORCE_CAST(int (*)(struct lttng_ust_tracepoint * const *, int), dlsym(lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle, - "tracepoint_register_lib")); - lttng_ust_tracepoint_dlopen_ptr->tracepoint_unregister_lib = + "lttng_ust_tracepoint_module_register")); + lttng_ust_tracepoint_dlopen_ptr->lttng_ust_tracepoint_module_unregister = URCU_FORCE_CAST(int (*)(struct lttng_ust_tracepoint * const *), dlsym(lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle, - "tracepoint_unregister_lib")); + "lttng_ust_tracepoint_module_unregister")); lttng_ust_tracepoint_destructors_syms_ptr->tracepoint_disable_destructors = URCU_FORCE_CAST(void (*)(void), dlsym(lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle, - "tp_disable_destructors")); + "lttng_ust_tp_disable_destructors")); lttng_ust_tracepoint_destructors_syms_ptr->tracepoint_get_destructors_state = URCU_FORCE_CAST(int (*)(void), dlsym(lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle, - "tp_get_destructors_state")); - __tracepoint__init_urcu_sym(); - if (lttng_ust_tracepoint_dlopen_ptr->tracepoint_register_lib) { - lttng_ust_tracepoint_dlopen_ptr->tracepoint_register_lib(__start___tracepoints_ptrs, - __stop___tracepoints_ptrs - - __start___tracepoints_ptrs); + "lttng_ust_tp_get_destructors_state")); + lttng_ust_tracepoint__init_urcu_sym(); + if (lttng_ust_tracepoint_dlopen_ptr->lttng_ust_tracepoint_module_register) { + lttng_ust_tracepoint_dlopen_ptr->lttng_ust_tracepoint_module_register(__start_lttng_ust_tracepoints_ptrs, + __stop_lttng_ust_tracepoints_ptrs - + __start_lttng_ust_tracepoints_ptrs); } } static void -__tracepoints__ptrs_destroy(void) - lttng_ust_notrace __attribute__((destructor)); +lttng_ust__tracepoints__ptrs_destroy(void) + lttng_ust_notrace __attribute__((destructor(LTTNG_UST_CONSTRUCTOR_PRIO))); static void -__tracepoints__ptrs_destroy(void) +lttng_ust__tracepoints__ptrs_destroy(void) { int ret; - if (--__tracepoint_ptrs_registered) + if (--lttng_ust_tracepoint_ptrs_registered) return; if (!lttng_ust_tracepoint_dlopen_ptr) lttng_ust_tracepoint_dlopen_ptr = <tng_ust_tracepoint_dlopen; if (!lttng_ust_tracepoint_destructors_syms_ptr) lttng_ust_tracepoint_destructors_syms_ptr = <tng_ust_tracepoint_destructors_syms; - if (lttng_ust_tracepoint_dlopen_ptr->tracepoint_unregister_lib) - lttng_ust_tracepoint_dlopen_ptr->tracepoint_unregister_lib(__start___tracepoints_ptrs); + if (lttng_ust_tracepoint_dlopen_ptr->lttng_ust_tracepoint_module_unregister) + lttng_ust_tracepoint_dlopen_ptr->lttng_ust_tracepoint_module_unregister(__start_lttng_ust_tracepoints_ptrs); if (lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle && lttng_ust_tracepoint_destructors_syms_ptr->tracepoint_get_destructors_state && lttng_ust_tracepoint_destructors_syms_ptr->tracepoint_get_destructors_state() - && !__tracepoint_ptrs_registered) { + && !lttng_ust_tracepoint_ptrs_registered) { ret = dlclose(lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle); if (ret) { fprintf(stderr, "Error (%d) in dlclose\n", ret); @@ -562,29 +674,53 @@ __tracepoints__ptrs_destroy(void) } } -#else /* TRACEPOINT_DEFINE */ +#ifdef __cplusplus +} +#endif + +#endif /* _LTTNG_UST_TRACEPOINT_DEFINE_ONCE */ +#else /* LTTNG_UST_TRACEPOINT_DEFINE */ + +#undef LTTNG_UST__DEFINE_TRACEPOINT #define LTTNG_UST__DEFINE_TRACEPOINT(_provider, _name, _args) -#endif /* #else TRACEPOINT_DEFINE */ +#endif /* #else LTTNG_UST_TRACEPOINT_DEFINE */ -#if LTTNG_UST_COMPAT_API(0) -#define tracepoint lttng_ust_tracepoint -#define do_tracepoint lttng_ust_do_tracepoint -#define tracepoint_enabled lttng_ust_tracepoint_enabled -#define TP_ARGS LTTNG_UST_TP_ARGS -#define TP_FIELDS LTTNG_UST_TP_FIELDS -#endif /* #if LTTNG_UST_COMPAT_API(0) */ +/* + * LTTNG_UST_TRACEPOINT_HIDDEN_DEFINITION: Define this before including + * a tracepoint instrumentation header to hide symbols associated with + * tracepoint module instrumentation. This is useful if all compile + * units using the lttng_ust_tracepoint(), + * lttng_ust_tracepoint_enabled() and lttng_ust_do_tracepoint() macros + * is within the same module as the compile unit including the + * tracepoint header after defining LTTNG_UST_TRACEPOINT_DEFINE. + */ -#ifdef __cplusplus -} +#undef LTTNG_UST__TRACEPOINT_DEFINITION_VISIBILITY +#ifdef LTTNG_UST_TRACEPOINT_HIDDEN_DEFINITION +#define LTTNG_UST__TRACEPOINT_DEFINITION_VISIBILITY __attribute__((visibility("hidden"))) +#else +#define LTTNG_UST__TRACEPOINT_DEFINITION_VISIBILITY __attribute__((visibility("default"))) #endif -#endif /* _LTTNG_TRACEPOINT_H */ - -/* The following declarations must be outside re-inclusion protection. */ +/* + * 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 -#ifndef TRACEPOINT_ENUM +#ifndef LTTNG_UST_TRACEPOINT_ENUM /* * Tracepoint Enumerations @@ -595,20 +731,20 @@ __tracepoints__ptrs_destroy(void) * * An example: * - * TRACEPOINT_ENUM(someproject_component, enumname, - * TP_ENUM_VALUES( - * ctf_enum_value("even", 0) - * ctf_enum_value("uneven", 1) - * ctf_enum_range("twoto4", 2, 4) - * ctf_enum_value("five", 5) + * LTTNG_UST_TRACEPOINT_ENUM(someproject_component, enumname, + * LTTNG_UST_TP_ENUM_VALUES( + * lttng_ust_field_enum_value("even", 0) + * lttng_ust_field_enum_value("uneven", 1) + * lttng_ust_field_enum_range("twoto4", 2, 4) + * lttng_ust_field_enum_value("five", 5) * ) * ) * * Where "someproject_component" is the name of the component this enumeration * belongs to and "enumname" identifies this enumeration. Inside the - * TP_ENUM_VALUES macro is the actual mapping. Each string value can map - * to either a single value with ctf_enum_value or a range of values - * with ctf_enum_range. + * LTTNG_UST_TP_ENUM_VALUES macro is the actual mapping. Each string value can map + * to either a single value with lttng_ust_field_enum_value or a range of values + * with lttng_ust_field_enum_range. * * Enumeration ranges may overlap, but the behavior is implementation-defined, * each trace reader will handle overlapping as it wishes. @@ -616,17 +752,21 @@ __tracepoints__ptrs_destroy(void) * That enumeration can then be used in a field inside the TP_FIELD macro using * the following line: * - * ctf_enum(someproject_component, enumname, enumtype, enumfield, enumval) + * lttng_ust_field_enum(someproject_component, enumname, enumtype, enumfield, enumval) * * Where "someproject_component" and "enumname" match those in the - * TRACEPOINT_ENUM, "enumtype" is a signed or unsigned integer type + * LTTNG_UST_TRACEPOINT_ENUM, "enumtype" is a signed or unsigned integer type * backing the enumeration, "enumfield" is the name of the field and * "enumval" is the value. */ -#define TRACEPOINT_ENUM(provider, name, values) +#define LTTNG_UST_TRACEPOINT_ENUM(provider, name, values) + +#if LTTNG_UST_COMPAT_API(0) +#define TRACEPOINT_ENUM LTTNG_UST_TRACEPOINT_ENUM +#endif /* #if LTTNG_UST_COMPAT_API(0) */ -#endif /* #ifndef TRACEPOINT_ENUM */ +#endif /* #ifndef LTTNG_UST_TRACEPOINT_ENUM */ #ifndef LTTNG_UST_TRACEPOINT_EVENT @@ -646,24 +786,24 @@ __tracepoints__ptrs_destroy(void) * * LTTNG_UST_TP_FIELDS( * * Integer, printed in base 10 * - * ctf_integer(int, field_a, arg0) + * lttng_ust_field_integer(int, field_a, arg0) * * * Integer, printed with 0x base 16 * - * ctf_integer_hex(unsigned long, field_d, arg1) + * lttng_ust_field_integer_hex(unsigned long, field_d, arg1) * * * Enumeration * - * ctf_enum(someproject_component, enum_name, int, field_e, arg0) + * lttng_ust_field_enum(someproject_component, enum_name, int, field_e, arg0) * * * Array Sequence, printed as UTF8-encoded array of bytes * - * ctf_array_text(char, field_b, string, FIXED_LEN) - * ctf_sequence_text(char, field_c, string, size_t, strlen) + * lttng_ust_field_array_text(char, field_b, string, FIXED_LEN) + * lttng_ust_field_sequence_text(char, field_c, string, size_t, strlen) * * * String, printed as UTF8-encoded string * - * ctf_string(field_e, string) + * lttng_ust_field_string(field_e, string) * * * Array sequence of signed integer values * - * ctf_array(long, field_f, arg4, FIXED_LEN4) - * ctf_sequence(long, field_g, arg4, size_t, arg4_len) + * lttng_ust_field_array(long, field_f, arg4, FIXED_LEN4) + * lttng_ust_field_sequence(long, field_g, arg4, size_t, arg4_len) * ) * ) * @@ -713,24 +853,27 @@ __tracepoints__ptrs_destroy(void) */ #define LTTNG_UST_TRACEPOINT_EVENT(provider, name, args, fields) \ - LTTNG_UST__DECLARE_TRACEPOINT(provider, name, _TP_PARAMS(args)) \ - LTTNG_UST__DEFINE_TRACEPOINT(provider, name, _TP_PARAMS(args)) + LTTNG_UST__DECLARE_TRACEPOINT(provider, name, LTTNG_UST__TP_PARAMS(args)) \ + LTTNG_UST__DEFINE_TRACEPOINT(provider, name, LTTNG_UST__TP_PARAMS(args)) #define LTTNG_UST_TRACEPOINT_EVENT_CLASS(provider, name, args, fields) -#define LTTNG_UST_TRACEPOINT_EVENT_INSTANCE(provider, _template, name, args) \ - LTTNG_UST__DECLARE_TRACEPOINT(provider, name, _TP_PARAMS(args)) \ - LTTNG_UST__DEFINE_TRACEPOINT(provider, name, _TP_PARAMS(args)) +#define LTTNG_UST_TRACEPOINT_EVENT_INSTANCE(template_provider, template_name, provider, name, args) \ + LTTNG_UST__DECLARE_TRACEPOINT(provider, name, LTTNG_UST__TP_PARAMS(args)) \ + LTTNG_UST__DEFINE_TRACEPOINT(provider, name, LTTNG_UST__TP_PARAMS(args)) #if LTTNG_UST_COMPAT_API(0) #define TRACEPOINT_EVENT LTTNG_UST_TRACEPOINT_EVENT #define TRACEPOINT_EVENT_CLASS LTTNG_UST_TRACEPOINT_EVENT_CLASS -#define TRACEPOINT_EVENT_INSTANCE LTTNG_UST_TRACEPOINT_EVENT_INSTANCE +#define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, args) \ + LTTNG_UST_TRACEPOINT_EVENT_INSTANCE(_provider, _template, \ + _provider, _name, LTTNG_UST__TP_PARAMS(args)) + #endif /* #if LTTNG_UST_COMPAT_API(0) */ #endif /* #ifndef LTTNG_UST_TRACEPOINT_EVENT */ -#ifndef TRACEPOINT_LOGLEVEL +#ifndef LTTNG_UST_TRACEPOINT_LOGLEVEL /* * Tracepoint Loglevels @@ -744,88 +887,112 @@ __tracepoints__ptrs_destroy(void) * semantic. Loglevels 7 through 13 offer more fine-grained selection of * debug information. * - * TRACE_EMERG 0 + * LTTNG_UST_TRACEPOINT_LOGLEVEL_EMERG 0 * system is unusable * - * TRACE_ALERT 1 + * LTTNG_UST_TRACEPOINT_LOGLEVEL_ALERT 1 * action must be taken immediately * - * TRACE_CRIT 2 + * LTTNG_UST_TRACEPOINT_LOGLEVEL_CRIT 2 * critical conditions * - * TRACE_ERR 3 + * LTTNG_UST_TRACEPOINT_LOGLEVEL_ERR 3 * error conditions * - * TRACE_WARNING 4 + * LTTNG_UST_TRACEPOINT_LOGLEVEL_WARNING 4 * warning conditions * - * TRACE_NOTICE 5 + * LTTNG_UST_TRACEPOINT_LOGLEVEL_NOTICE 5 * normal, but significant, condition * - * TRACE_INFO 6 + * LTTNG_UST_TRACEPOINT_LOGLEVEL_INFO 6 * informational message * - * TRACE_DEBUG_SYSTEM 7 + * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_SYSTEM 7 * debug information with system-level scope (set of programs) * - * TRACE_DEBUG_PROGRAM 8 + * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_PROGRAM 8 * debug information with program-level scope (set of processes) * - * TRACE_DEBUG_PROCESS 9 + * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_PROCESS 9 * debug information with process-level scope (set of modules) * - * TRACE_DEBUG_MODULE 10 + * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_MODULE 10 * debug information with module (executable/library) scope (set of units) * - * TRACE_DEBUG_UNIT 11 + * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_UNIT 11 * debug information with compilation unit scope (set of functions) * - * TRACE_DEBUG_FUNCTION 12 + * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_FUNCTION 12 * debug information with function-level scope * - * TRACE_DEBUG_LINE 13 + * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_LINE 13 * debug information with line-level scope (LTTNG_UST_TRACEPOINT_EVENT default) * - * TRACE_DEBUG 14 + * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG 14 * debug-level message * * Declare tracepoint loglevels for tracepoints. A LTTNG_UST_TRACEPOINT_EVENT - * should be declared prior to the the TRACEPOINT_LOGLEVEL for a given + * should be declared prior to the the LTTNG_UST_TRACEPOINT_LOGLEVEL for a given * tracepoint name. The first field is the provider name, the second * field is the name of the tracepoint, the third field is the loglevel * name. * - * TRACEPOINT_LOGLEVEL(< [com_company_]project[_component] >, < event >, + * LTTNG_UST_TRACEPOINT_LOGLEVEL(< [com_company_]project[_component] >, < event >, * < loglevel_name >) * - * The TRACEPOINT_PROVIDER must be already declared before declaring a - * TRACEPOINT_LOGLEVEL. + * The LTTNG_UST_TRACEPOINT_PROVIDER must be already declared before declaring a + * LTTNG_UST_TRACEPOINT_LOGLEVEL. */ enum { - TRACE_EMERG = 0, - TRACE_ALERT = 1, - TRACE_CRIT = 2, - TRACE_ERR = 3, - TRACE_WARNING = 4, - TRACE_NOTICE = 5, - TRACE_INFO = 6, - TRACE_DEBUG_SYSTEM = 7, - TRACE_DEBUG_PROGRAM = 8, - TRACE_DEBUG_PROCESS = 9, - TRACE_DEBUG_MODULE = 10, - TRACE_DEBUG_UNIT = 11, - TRACE_DEBUG_FUNCTION = 12, - TRACE_DEBUG_LINE = 13, - TRACE_DEBUG = 14, + LTTNG_UST_TRACEPOINT_LOGLEVEL_EMERG = 0, + LTTNG_UST_TRACEPOINT_LOGLEVEL_ALERT = 1, + LTTNG_UST_TRACEPOINT_LOGLEVEL_CRIT = 2, + LTTNG_UST_TRACEPOINT_LOGLEVEL_ERR = 3, + LTTNG_UST_TRACEPOINT_LOGLEVEL_WARNING = 4, + LTTNG_UST_TRACEPOINT_LOGLEVEL_NOTICE = 5, + LTTNG_UST_TRACEPOINT_LOGLEVEL_INFO = 6, + LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_SYSTEM = 7, + LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_PROGRAM = 8, + LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_PROCESS = 9, + LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_MODULE = 10, + LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_UNIT = 11, + LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_FUNCTION = 12, + LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_LINE = 13, + LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG = 14, }; -#define TRACEPOINT_LOGLEVEL(provider, name, loglevel) +#define LTTNG_UST_TRACEPOINT_LOGLEVEL(provider, name, loglevel) -#endif /* #ifndef TRACEPOINT_LOGLEVEL */ +#if LTTNG_UST_COMPAT_API(0) +#define TRACEPOINT_LOGLEVEL LTTNG_UST_TRACEPOINT_LOGLEVEL + +#define TRACE_EMERG LTTNG_UST_TRACEPOINT_LOGLEVEL_EMERG +#define TRACE_ALERT LTTNG_UST_TRACEPOINT_LOGLEVEL_ALERT +#define TRACE_CRIT LTTNG_UST_TRACEPOINT_LOGLEVEL_CRIT +#define TRACE_ERR LTTNG_UST_TRACEPOINT_LOGLEVEL_ERR +#define TRACE_WARNING LTTNG_UST_TRACEPOINT_LOGLEVEL_WARNING +#define TRACE_NOTICE LTTNG_UST_TRACEPOINT_LOGLEVEL_NOTICE +#define TRACE_INFO LTTNG_UST_TRACEPOINT_LOGLEVEL_INFO +#define TRACE_DEBUG_SYSTEM LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_SYSTEM +#define TRACE_DEBUG_PROGRAM LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_PROGRAM +#define TRACE_DEBUG_PROCESS LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_PROCESS +#define TRACE_DEBUG_MODULE LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_MODULE +#define TRACE_DEBUG_UNIT LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_UNIT +#define TRACE_DEBUG_FUNCTION LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_FUNCTION +#define TRACE_DEBUG_LINE LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_LINE +#define TRACE_DEBUG LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG +#endif + +#endif /* #ifndef LTTNG_UST_TRACEPOINT_LOGLEVEL */ + +#ifndef LTTNG_UST_TRACEPOINT_MODEL_EMF_URI -#ifndef TRACEPOINT_MODEL_EMF_URI +#define LTTNG_UST_TRACEPOINT_MODEL_EMF_URI(provider, name, uri) -#define TRACEPOINT_MODEL_EMF_URI(provider, name, uri) +#if LTTNG_UST_COMPAT_API(0) +#define TRACEPOINT_MODEL_EMF_URI LTTNG_UST_TRACEPOINT_MODEL_EMF_URI +#endif -#endif /* #ifndef TRACEPOINT_MODEL_EMF_URI */ +#endif /* #ifndef LTTNG_UST_TRACEPOINT_MODEL_EMF_URI */