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1c196845 MJ |
1 | // SPDX-FileCopyrightText: 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
2 | // | |
3 | // SPDX-License-Identifier: MIT | |
b728d87e | 4 | |
9b14815a MD |
5 | #ifndef _LTTNG_UST_TRACEPOINT_H |
6 | #define _LTTNG_UST_TRACEPOINT_H | |
c0c0989a | 7 | |
76aca78d MD |
8 | #include <stdio.h> |
9 | #include <stdlib.h> | |
8fce9e2b | 10 | #include <lttng/tracepoint-types.h> |
40b2b5a4 | 11 | #include <lttng/tracepoint-rcu.h> |
8041f641 MD |
12 | #include <lttng/ust-utils.h> |
13 | #include <sys/types.h> | |
14 | #include <unistd.h> | |
15 | ||
b728d87e | 16 | #include <urcu/compiler.h> |
c082d14b | 17 | #include <urcu/system.h> |
deb6e540 | 18 | #include <dlfcn.h> /* for dlopen */ |
51920067 | 19 | #include <string.h> /* for memset */ |
8041f641 | 20 | #include <stdbool.h> |
3d3dc207 | 21 | |
b2f60c79 | 22 | #include <lttng/ust-config.h> /* for sdt */ |
a8909ba5 | 23 | #include <lttng/ust-compiler.h> |
3d3dc207 | 24 | #include <lttng/ust-tracer.h> |
cbc06a3b | 25 | #include <lttng/ust-api-compat.h> |
b2f60c79 | 26 | |
e0ca901d MJ |
27 | #if (defined(__cplusplus) && (__cplusplus <= 199711L)) |
28 | #error "C++11 support is required to build tracepoints and providers as C++" | |
29 | #endif | |
30 | ||
81b16412 MD |
31 | #define LTTNG_UST_TRACEPOINT_NAME_LEN_MAX 256 |
32 | ||
b2f60c79 | 33 | #ifdef LTTNG_UST_HAVE_SDT_INTEGRATION |
23b75ae5 MJ |
34 | /* |
35 | * Instead of using SDT_USE_VARIADIC from 'sys/sdt.h', use our own namespaced | |
36 | * macros since the instrumented application might already have included | |
37 | * 'sys/sdt.h' without variadic support. | |
38 | */ | |
b2f60c79 | 39 | #include <sys/sdt.h> |
23b75ae5 | 40 | |
bd75d5b9 MJ |
41 | #define LTTNG_UST__SDT_NARG(...) \ |
42 | LTTNG_UST___SDT_NARG(__VA_ARGS__, 12,11,10,9,8,7,6,5,4,3,2,1,0) | |
23b75ae5 | 43 | |
bd75d5b9 | 44 | #define LTTNG_UST___SDT_NARG(_0,_1,_2,_3,_4,_5,_6,_7,_8,_9,_10,_11,_12, N, ...) N |
23b75ae5 | 45 | |
bd75d5b9 | 46 | #define LTTNG_UST__SDT_PROBE_N(provider, name, N, ...) \ |
23b75ae5 MJ |
47 | _SDT_PROBE(provider, name, N, (__VA_ARGS__)) |
48 | ||
b88f9167 | 49 | #define LTTNG_UST_STAP_PROBEV(provider, name, ...) \ |
bd75d5b9 | 50 | LTTNG_UST__SDT_PROBE_N(provider, name, LTTNG_UST__SDT_NARG(0, ##__VA_ARGS__), ##__VA_ARGS__) |
23b75ae5 | 51 | |
b2f60c79 | 52 | #else |
b88f9167 | 53 | #define LTTNG_UST_STAP_PROBEV(...) |
b2f60c79 | 54 | #endif |
b728d87e MD |
55 | |
56 | #ifdef __cplusplus | |
57 | extern "C" { | |
58 | #endif | |
59 | ||
cbc06a3b | 60 | #define lttng_ust_tracepoint_enabled(provider, name) \ |
0274f7f2 | 61 | caa_unlikely(CMM_LOAD_SHARED(lttng_ust_tracepoint_##provider##___##name.state)) |
8da6d0c8 | 62 | |
cbc06a3b | 63 | #define lttng_ust_do_tracepoint(provider, name, ...) \ |
0274f7f2 | 64 | lttng_ust_tracepoint_cb_##provider##___##name(__VA_ARGS__) |
8da6d0c8 | 65 | |
cbc06a3b MD |
66 | #define lttng_ust_tracepoint(provider, name, ...) \ |
67 | do { \ | |
68 | LTTNG_UST_STAP_PROBEV(provider, name, ## __VA_ARGS__); \ | |
69 | if (lttng_ust_tracepoint_enabled(provider, name)) \ | |
70 | lttng_ust_do_tracepoint(provider, name, __VA_ARGS__); \ | |
b728d87e MD |
71 | } while (0) |
72 | ||
cadfcbfc | 73 | #define LTTNG_UST_TP_ARGS(...) __VA_ARGS__ |
b728d87e MD |
74 | |
75 | /* | |
cadfcbfc | 76 | * LTTNG_UST_TP_ARGS takes tuples of type, argument separated by a comma. |
b728d87e MD |
77 | * It can take up to 10 tuples (which means that less than 10 tuples is |
78 | * fine too). | |
79 | * Each tuple is also separated by a comma. | |
80 | */ | |
aec5037b | 81 | #define LTTNG_UST___TP_COMBINE_TOKENS(_tokena, _tokenb) \ |
df854e41 | 82 | _tokena##_tokenb |
aec5037b MJ |
83 | #define LTTNG_UST__TP_COMBINE_TOKENS(_tokena, _tokenb) \ |
84 | LTTNG_UST___TP_COMBINE_TOKENS(_tokena, _tokenb) | |
85 | #define LTTNG_UST___TP_COMBINE_TOKENS3(_tokena, _tokenb, _tokenc) \ | |
df854e41 | 86 | _tokena##_tokenb##_tokenc |
aec5037b MJ |
87 | #define LTTNG_UST__TP_COMBINE_TOKENS3(_tokena, _tokenb, _tokenc) \ |
88 | LTTNG_UST___TP_COMBINE_TOKENS3(_tokena, _tokenb, _tokenc) | |
89 | #define LTTNG_UST___TP_COMBINE_TOKENS4(_tokena, _tokenb, _tokenc, _tokend) \ | |
df854e41 | 90 | _tokena##_tokenb##_tokenc##_tokend |
aec5037b MJ |
91 | #define LTTNG_UST__TP_COMBINE_TOKENS4(_tokena, _tokenb, _tokenc, _tokend) \ |
92 | LTTNG_UST___TP_COMBINE_TOKENS4(_tokena, _tokenb, _tokenc, _tokend) | |
b728d87e | 93 | |
4495dd39 | 94 | /* |
20bbaf92 | 95 | * LTTNG_UST__TP_EXVAR* extract the var names. |
26772f59 | 96 | * LTTNG_UST__TP_EXVAR1 and LTTNG_UST__TP_EXDATA_VAR1 are needed for -std=c99. |
4495dd39 | 97 | */ |
20bbaf92 MJ |
98 | #define LTTNG_UST__TP_EXVAR0() |
99 | #define LTTNG_UST__TP_EXVAR1(a) | |
100 | #define LTTNG_UST__TP_EXVAR2(a,b) b | |
101 | #define LTTNG_UST__TP_EXVAR4(a,b,c,d) b,d | |
102 | #define LTTNG_UST__TP_EXVAR6(a,b,c,d,e,f) b,d,f | |
103 | #define LTTNG_UST__TP_EXVAR8(a,b,c,d,e,f,g,h) b,d,f,h | |
104 | #define LTTNG_UST__TP_EXVAR10(a,b,c,d,e,f,g,h,i,j) b,d,f,h,j | |
105 | #define LTTNG_UST__TP_EXVAR12(a,b,c,d,e,f,g,h,i,j,k,l) b,d,f,h,j,l | |
106 | #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 | |
107 | #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 | |
108 | #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 | |
109 | #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 | |
b728d87e | 110 | |
26772f59 MJ |
111 | #define LTTNG_UST__TP_EXDATA_VAR0() __tp_data |
112 | #define LTTNG_UST__TP_EXDATA_VAR1(a) __tp_data | |
113 | #define LTTNG_UST__TP_EXDATA_VAR2(a,b) __tp_data,b | |
114 | #define LTTNG_UST__TP_EXDATA_VAR4(a,b,c,d) __tp_data,b,d | |
115 | #define LTTNG_UST__TP_EXDATA_VAR6(a,b,c,d,e,f) __tp_data,b,d,f | |
116 | #define LTTNG_UST__TP_EXDATA_VAR8(a,b,c,d,e,f,g,h) __tp_data,b,d,f,h | |
117 | #define LTTNG_UST__TP_EXDATA_VAR10(a,b,c,d,e,f,g,h,i,j) __tp_data,b,d,f,h,j | |
118 | #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 | |
119 | #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 | |
120 | #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 | |
121 | #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 | |
122 | #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 | |
b728d87e | 123 | |
4495dd39 | 124 | /* |
0efe0fcd MJ |
125 | * LTTNG_UST__TP_EXPROTO* extract tuples of type, var. |
126 | * LTTNG_UST__TP_EXPROTO1 and LTTNG_UST__TP_EXDATA_PROTO1 are needed for -std=c99. | |
4495dd39 | 127 | */ |
0efe0fcd MJ |
128 | #define LTTNG_UST__TP_EXPROTO0() void |
129 | #define LTTNG_UST__TP_EXPROTO1(a) void | |
130 | #define LTTNG_UST__TP_EXPROTO2(a,b) a b | |
131 | #define LTTNG_UST__TP_EXPROTO4(a,b,c,d) a b,c d | |
132 | #define LTTNG_UST__TP_EXPROTO6(a,b,c,d,e,f) a b,c d,e f | |
133 | #define LTTNG_UST__TP_EXPROTO8(a,b,c,d,e,f,g,h) a b,c d,e f,g h | |
134 | #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 | |
135 | #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 | |
136 | #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 | |
137 | #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 | |
138 | #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 | |
139 | #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 | |
b728d87e | 140 | |
26772f59 MJ |
141 | #define LTTNG_UST__TP_EXDATA_PROTO0() void *__tp_data |
142 | #define LTTNG_UST__TP_EXDATA_PROTO1(a) void *__tp_data | |
143 | #define LTTNG_UST__TP_EXDATA_PROTO2(a,b) void *__tp_data,a b | |
144 | #define LTTNG_UST__TP_EXDATA_PROTO4(a,b,c,d) void *__tp_data,a b,c d | |
145 | #define LTTNG_UST__TP_EXDATA_PROTO6(a,b,c,d,e,f) void *__tp_data,a b,c d,e f | |
146 | #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 | |
147 | #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 | |
148 | #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 | |
149 | #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 | |
150 | #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 | |
151 | #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 | |
152 | #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 | |
b728d87e MD |
153 | |
154 | /* Preprocessor trick to count arguments. Inspired from sdt.h. */ | |
6eddcb06 MJ |
155 | #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) |
156 | #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 | |
157 | #define LTTNG_UST__TP_PROTO_N(N, ...) LTTNG_UST__TP_PARAMS(LTTNG_UST__TP_COMBINE_TOKENS(LTTNG_UST__TP_EXPROTO, N)(__VA_ARGS__)) | |
158 | #define LTTNG_UST__TP_VAR_N(N, ...) LTTNG_UST__TP_PARAMS(LTTNG_UST__TP_COMBINE_TOKENS(LTTNG_UST__TP_EXVAR, N)(__VA_ARGS__)) | |
159 | #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__)) | |
160 | #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__)) | |
161 | #define LTTNG_UST__TP_ARGS_PROTO(...) LTTNG_UST__TP_PROTO_N(LTTNG_UST__TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__) | |
162 | #define LTTNG_UST__TP_ARGS_VAR(...) LTTNG_UST__TP_VAR_N(LTTNG_UST__TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__) | |
163 | #define LTTNG_UST__TP_ARGS_DATA_PROTO(...) LTTNG_UST__TP_DATA_PROTO_N(LTTNG_UST__TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__) | |
164 | #define LTTNG_UST__TP_ARGS_DATA_VAR(...) LTTNG_UST__TP_DATA_VAR_N(LTTNG_UST__TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__) | |
165 | #define LTTNG_UST__TP_PARAMS(...) __VA_ARGS__ | |
b728d87e | 166 | |
81b16412 MD |
167 | /* |
168 | * sizeof(#_provider) - 1 : length of the provider string (excluding \0). | |
169 | * sizeof(#_name) - 1 : length of the name string (excluding \0). | |
170 | * + 1 : separator between provider and event name. | |
171 | * | |
172 | * Upper bound (inclusive) is LTTNG_UST_TRACEPOINT_NAME_LEN_MAX - 1 to | |
173 | * account for \0. | |
174 | * | |
175 | * The comparison is: | |
176 | * left hand side: sizeof(#_provider) - 1 + sizeof(#_name) - 1 + 1 | |
177 | * right hand side: LTTNG_UST_TRACEPOINT_NAME_LEN_MAX - 1 | |
178 | * operator: <= (inclusive) | |
179 | * Simplified in the code below. | |
180 | */ | |
181 | #define lttng_ust_tracepoint_validate_name_len(_provider, _name) \ | |
182 | lttng_ust_static_assert(sizeof(#_provider) + sizeof(#_name) <= LTTNG_UST_TRACEPOINT_NAME_LEN_MAX, \ | |
183 | "Tracepoint name length is too long", \ | |
184 | Tracepoint_name_length_is_too_long) | |
185 | ||
96f85541 MD |
186 | /* |
187 | * The tracepoint cb is marked always inline so we can distinguish | |
188 | * between caller's ip addresses within the probe using the return | |
189 | * address. | |
190 | */ | |
7f2f82c3 | 191 | #define LTTNG_UST__DECLARE_TRACEPOINT(_provider, _name, ...) \ |
29d6f421 MD |
192 | extern struct lttng_ust_tracepoint lttng_ust_tracepoint_##_provider##___##_name \ |
193 | LTTNG_UST__TRACEPOINT_DEFINITION_VISIBILITY; \ | |
8da9deee | 194 | static inline \ |
6eddcb06 | 195 | void lttng_ust_tracepoint_cb_##_provider##___##_name(LTTNG_UST__TP_ARGS_PROTO(__VA_ARGS__)) \ |
8da9deee | 196 | __attribute__((always_inline, unused)) lttng_ust_notrace; \ |
96f85541 | 197 | static \ |
6eddcb06 | 198 | void lttng_ust_tracepoint_cb_##_provider##___##_name(LTTNG_UST__TP_ARGS_PROTO(__VA_ARGS__)) \ |
b728d87e | 199 | { \ |
10544ee8 | 200 | struct lttng_ust_tracepoint_probe *__tp_probe; \ |
b728d87e | 201 | \ |
251c9f75 | 202 | if (caa_unlikely(!LTTNG_UST_TP_RCU_LINK_TEST())) \ |
deb6e540 | 203 | return; \ |
251c9f75 MJ |
204 | lttng_ust_tp_rcu_read_lock(); \ |
205 | __tp_probe = lttng_ust_tp_rcu_dereference(lttng_ust_tracepoint_##_provider##___##_name.probes); \ | |
23c8854a | 206 | if (caa_unlikely(!__tp_probe)) \ |
b728d87e MD |
207 | goto end; \ |
208 | do { \ | |
1a206094 | 209 | void (*__tp_cb)(void) = __tp_probe->func; \ |
23c8854a | 210 | void *__tp_data = __tp_probe->data; \ |
b728d87e | 211 | \ |
6eddcb06 MJ |
212 | URCU_FORCE_CAST(void (*)(LTTNG_UST__TP_ARGS_DATA_PROTO(__VA_ARGS__)), __tp_cb) \ |
213 | (LTTNG_UST__TP_ARGS_DATA_VAR(__VA_ARGS__)); \ | |
23c8854a | 214 | } while ((++__tp_probe)->func); \ |
b728d87e | 215 | end: \ |
251c9f75 | 216 | lttng_ust_tp_rcu_read_unlock(); \ |
b728d87e | 217 | } \ |
106ff4da | 218 | static inline \ |
0274f7f2 | 219 | void lttng_ust_tracepoint_register_##_provider##___##_name(char *provider_name, char *event_name, \ |
106ff4da MJ |
220 | void (*func)(void), void *data) \ |
221 | lttng_ust_notrace; \ | |
a8909ba5 | 222 | static inline \ |
0274f7f2 | 223 | void lttng_ust_tracepoint_register_##_provider##___##_name(char *provider_name, char *event_name, \ |
a8909ba5 | 224 | void (*func)(void), void *data) \ |
b728d87e | 225 | { \ |
9b34a2b2 | 226 | lttng_ust_tracepoint_provider_register(provider_name, event_name, func, data, \ |
0274f7f2 | 227 | lttng_ust_tracepoint_##_provider##___##_name.signature); \ |
b728d87e | 228 | } \ |
106ff4da | 229 | static inline \ |
0274f7f2 | 230 | void lttng_ust_tracepoint_unregister_##_provider##___##_name(char *provider_name, char *event_name, \ |
106ff4da MJ |
231 | void (*func)(void), void *data) \ |
232 | lttng_ust_notrace; \ | |
a8909ba5 | 233 | static inline \ |
0274f7f2 | 234 | void lttng_ust_tracepoint_unregister_##_provider##___##_name(char *provider_name, char *event_name, \ |
a8909ba5 | 235 | void (*func)(void), void *data) \ |
b728d87e | 236 | { \ |
9b34a2b2 | 237 | lttng_ust_tracepoint_provider_unregister(provider_name, event_name, func, data); \ |
b728d87e MD |
238 | } |
239 | ||
8812e921 MD |
240 | /* |
241 | * Registration of tracepoint provider probe functions with | |
242 | * lttng_ust_tracepoint_provider_register, unregistration with | |
243 | * lttng_ust_tracepoint_provider_unregister. | |
244 | */ | |
245 | int lttng_ust_tracepoint_provider_register(const char *provider_name, const char *event_name, | |
34f7f142 | 246 | void (*func)(void), void *data, const char *signature); |
8812e921 | 247 | int lttng_ust_tracepoint_provider_unregister(const char *provider_name, const char *event_name, |
34f7f142 | 248 | void (*func)(void), void *data); |
deb6e540 | 249 | |
8812e921 MD |
250 | /* |
251 | * Registration of tracepoint instrumentation modules with lttng_ust_tracepoint_module_register, | |
252 | * unregistration with lttng_ust_tracepoint_module_unregister. | |
253 | */ | |
254 | int lttng_ust_tracepoint_module_register(struct lttng_ust_tracepoint * const *tracepoints_start, | |
255 | int tracepoints_count); | |
256 | int lttng_ust_tracepoint_module_unregister(struct lttng_ust_tracepoint * const *tracepoints_start); | |
257 | ||
51920067 MD |
258 | /* |
259 | * tracepoint dynamic linkage handling (callbacks). Hidden visibility: | |
260 | * shared across objects in a module/main executable. | |
f641d544 MD |
261 | * |
262 | * IMPORTANT: this structure is part of the ABI between instrumented | |
263 | * applications and UST. Fields need to be only added at the end, never | |
264 | * reordered, never removed. | |
265 | * | |
266 | * The field @struct_size should be used to determine the size of the | |
267 | * structure. It should be queried before using additional fields added | |
268 | * at the end of the structure. | |
51920067 | 269 | */ |
1a206094 | 270 | struct lttng_ust_tracepoint_dlopen { |
f641d544 MD |
271 | uint32_t struct_size; |
272 | ||
51920067 MD |
273 | void *liblttngust_handle; |
274 | ||
14227bde | 275 | int (*lttng_ust_tracepoint_module_register)(struct lttng_ust_tracepoint * const *tracepoints_start, |
51920067 | 276 | int tracepoints_count); |
14227bde | 277 | int (*lttng_ust_tracepoint_module_unregister)(struct lttng_ust_tracepoint * const *tracepoints_start); |
10544ee8 MD |
278 | void (*rcu_read_lock_sym)(void); |
279 | void (*rcu_read_unlock_sym)(void); | |
280 | void *(*rcu_dereference_sym)(void *p); | |
f641d544 MD |
281 | |
282 | /* End of base ABI. Fields below should be used after checking struct_size. */ | |
51920067 MD |
283 | }; |
284 | ||
7863d51a MJ |
285 | extern struct lttng_ust_tracepoint_dlopen lttng_ust_tracepoint_dlopen; |
286 | extern struct lttng_ust_tracepoint_dlopen *lttng_ust_tracepoint_dlopen_ptr; | |
51920067 | 287 | |
46c881a7 MD |
288 | /* |
289 | * These weak symbols, the constructor, and destructor take care of | |
290 | * registering only _one_ instance of the tracepoints per shared-ojbect | |
291 | * (or for the whole main program). | |
292 | */ | |
0274f7f2 | 293 | int lttng_ust_tracepoint_registered |
46c881a7 | 294 | __attribute__((weak, visibility("hidden"))); |
0274f7f2 | 295 | int lttng_ust_tracepoint_ptrs_registered |
46c881a7 | 296 | __attribute__((weak, visibility("hidden"))); |
7863d51a | 297 | struct lttng_ust_tracepoint_dlopen lttng_ust_tracepoint_dlopen |
f641d544 MD |
298 | __attribute__((weak, visibility("hidden"))) = { |
299 | .struct_size = sizeof(struct lttng_ust_tracepoint_dlopen), | |
300 | }; | |
9443a022 MD |
301 | /* |
302 | * Deal with gcc O1 optimisation issues with weak hidden symbols. gcc | |
303 | * 4.8 and prior does not have the same behavior for symbol scoping on | |
304 | * 32-bit powerpc depending on the object size: symbols for objects of 8 | |
305 | * bytes or less have the same address throughout a module, whereas they | |
306 | * have different addresses between compile units for objects larger | |
307 | * than 8 bytes. Add this pointer indirection to ensure that the symbol | |
308 | * scoping match that of the other weak hidden symbols found in this | |
309 | * header. | |
310 | */ | |
7863d51a | 311 | struct lttng_ust_tracepoint_dlopen *lttng_ust_tracepoint_dlopen_ptr |
9443a022 | 312 | __attribute__((weak, visibility("hidden"))); |
46c881a7 | 313 | |
0fd0de10 FD |
314 | /* |
315 | * Tracepoint dynamic linkage handling (callbacks). Hidden visibility: shared | |
316 | * across objects in a module/main executable. The callbacks are used to | |
317 | * control and check if the destructors should be executed. | |
f641d544 MD |
318 | * |
319 | * IMPORTANT: this structure is part of the ABI between instrumented | |
320 | * applications and UST. Fields need to be only added at the end, never | |
321 | * reordered, never removed. | |
322 | * | |
323 | * The field @struct_size should be used to determine the size of the | |
324 | * structure. It should be queried before using additional fields added | |
325 | * at the end of the structure. | |
0fd0de10 FD |
326 | */ |
327 | struct lttng_ust_tracepoint_destructors_syms { | |
f641d544 MD |
328 | uint32_t struct_size; |
329 | ||
0fd0de10 FD |
330 | void (*tracepoint_disable_destructors)(void); |
331 | int (*tracepoint_get_destructors_state)(void); | |
f641d544 MD |
332 | |
333 | /* End of base ABI. Fields below should be used after checking struct_size. */ | |
0fd0de10 FD |
334 | }; |
335 | ||
62eb90f3 MJ |
336 | extern struct lttng_ust_tracepoint_destructors_syms lttng_ust_tracepoint_destructors_syms; |
337 | extern struct lttng_ust_tracepoint_destructors_syms *lttng_ust_tracepoint_destructors_syms_ptr; | |
0fd0de10 | 338 | |
62eb90f3 | 339 | struct lttng_ust_tracepoint_destructors_syms lttng_ust_tracepoint_destructors_syms |
f641d544 MD |
340 | __attribute__((weak, visibility("hidden"))) = { |
341 | .struct_size = sizeof(struct lttng_ust_tracepoint_destructors_syms), | |
342 | }; | |
62eb90f3 | 343 | struct lttng_ust_tracepoint_destructors_syms *lttng_ust_tracepoint_destructors_syms_ptr |
0fd0de10 FD |
344 | __attribute__((weak, visibility("hidden"))); |
345 | ||
346 | static inline void tracepoint_disable_destructors(void) | |
347 | { | |
7863d51a MJ |
348 | if (!lttng_ust_tracepoint_dlopen_ptr) |
349 | lttng_ust_tracepoint_dlopen_ptr = <tng_ust_tracepoint_dlopen; | |
62eb90f3 MJ |
350 | if (!lttng_ust_tracepoint_destructors_syms_ptr) |
351 | lttng_ust_tracepoint_destructors_syms_ptr = <tng_ust_tracepoint_destructors_syms; | |
7863d51a | 352 | if (lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle |
62eb90f3 MJ |
353 | && lttng_ust_tracepoint_destructors_syms_ptr->tracepoint_disable_destructors) |
354 | lttng_ust_tracepoint_destructors_syms_ptr->tracepoint_disable_destructors(); | |
0fd0de10 FD |
355 | } |
356 | ||
99234da6 | 357 | #ifndef _LGPL_SOURCE |
106ff4da | 358 | static inline void |
0274f7f2 | 359 | lttng_ust_tracepoint__init_urcu_sym(void) |
106ff4da | 360 | lttng_ust_notrace; |
99234da6 | 361 | static inline void |
0274f7f2 | 362 | lttng_ust_tracepoint__init_urcu_sym(void) |
99234da6 | 363 | { |
7863d51a MJ |
364 | if (!lttng_ust_tracepoint_dlopen_ptr) |
365 | lttng_ust_tracepoint_dlopen_ptr = <tng_ust_tracepoint_dlopen; | |
99234da6 MD |
366 | /* |
367 | * Symbols below are needed by tracepoint call sites and probe | |
368 | * providers. | |
369 | */ | |
7863d51a MJ |
370 | if (!lttng_ust_tracepoint_dlopen_ptr->rcu_read_lock_sym) |
371 | lttng_ust_tracepoint_dlopen_ptr->rcu_read_lock_sym = | |
99234da6 | 372 | URCU_FORCE_CAST(void (*)(void), |
7863d51a | 373 | dlsym(lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle, |
251c9f75 | 374 | "lttng_ust_tp_rcu_read_lock")); |
7863d51a MJ |
375 | if (!lttng_ust_tracepoint_dlopen_ptr->rcu_read_unlock_sym) |
376 | lttng_ust_tracepoint_dlopen_ptr->rcu_read_unlock_sym = | |
99234da6 | 377 | URCU_FORCE_CAST(void (*)(void), |
7863d51a | 378 | dlsym(lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle, |
251c9f75 | 379 | "lttng_ust_tp_rcu_read_unlock")); |
7863d51a MJ |
380 | if (!lttng_ust_tracepoint_dlopen_ptr->rcu_dereference_sym) |
381 | lttng_ust_tracepoint_dlopen_ptr->rcu_dereference_sym = | |
99234da6 | 382 | URCU_FORCE_CAST(void *(*)(void *p), |
7863d51a | 383 | dlsym(lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle, |
251c9f75 | 384 | "lttng_ust_tp_rcu_dereference_sym")); |
99234da6 MD |
385 | } |
386 | #else | |
106ff4da | 387 | static inline void |
0274f7f2 | 388 | lttng_ust_tracepoint__init_urcu_sym(void) |
106ff4da | 389 | lttng_ust_notrace; |
99234da6 | 390 | static inline void |
0274f7f2 | 391 | lttng_ust_tracepoint__init_urcu_sym(void) |
99234da6 MD |
392 | { |
393 | } | |
394 | #endif | |
395 | ||
8041f641 MD |
396 | /* |
397 | * Use getenv() directly and bypass lttng-ust helper functions | |
398 | * because we may not have access to lttng-ust shared libraries. | |
399 | */ | |
400 | #ifdef LTTNG_UST_DEBUG | |
401 | static inline | |
402 | bool lttng_ust_tracepoint_logging_debug_enabled(void) | |
403 | { | |
404 | return true; | |
405 | } | |
406 | #else /* #ifdef LTTNG_UST_DEBUG */ | |
407 | static inline | |
408 | bool lttng_ust_tracepoint_logging_debug_enabled(void) | |
409 | { | |
410 | return getenv("LTTNG_UST_DEBUG"); | |
411 | } | |
412 | #endif /* #ifdef LTTNG_UST_DEBUG */ | |
413 | ||
a24e542a MD |
414 | #ifdef LTTNG_UST_ABORT_ON_CRITICAL |
415 | static inline | |
416 | bool lttng_ust_tracepoint_logging_abort_on_critical_enabled(void) | |
417 | { | |
418 | return true; | |
419 | } | |
420 | #else /* #ifdef LTTNG_UST_ABORT_ON_CRITICAL */ | |
421 | static inline | |
422 | bool lttng_ust_tracepoint_logging_abort_on_critical_enabled(void) | |
423 | { | |
424 | return getenv("LTTNG_UST_ABORT_ON_CRITICAL"); | |
425 | } | |
426 | #endif | |
427 | ||
8041f641 MD |
428 | #define LTTNG_UST_TRACEPOINT_THIS_IP \ |
429 | ({ __label__ here; here: &&here; }) | |
430 | ||
431 | static void | |
432 | lttng_ust_tracepoints_print_disabled_message(void) | |
433 | { | |
a24e542a MD |
434 | if (lttng_ust_tracepoint_logging_debug_enabled()) |
435 | fprintf(stderr, "lttng-ust-tracepoint [%ld]: Critical: dlopen() failed to find '%s', tracepoints in this binary won't be registered. " | |
436 | "(at addr=%p in %s() at " __FILE__ ":" lttng_ust_stringify(__LINE__) ")\n", | |
437 | (long) getpid(), | |
438 | LTTNG_UST_TRACEPOINT_LIB_SONAME, | |
439 | LTTNG_UST_TRACEPOINT_THIS_IP, | |
440 | __func__); | |
441 | if (lttng_ust_tracepoint_logging_abort_on_critical_enabled()) | |
442 | abort(); | |
8041f641 MD |
443 | } |
444 | ||
465a0d04 | 445 | static void |
ac9f44c2 | 446 | lttng_ust__tracepoints__init(void) |
63661b66 | 447 | lttng_ust_notrace __attribute__((constructor(LTTNG_UST_CONSTRUCTOR_PRIO))); |
46c881a7 | 448 | static void |
ac9f44c2 | 449 | lttng_ust__tracepoints__init(void) |
46c881a7 | 450 | { |
0274f7f2 | 451 | if (lttng_ust_tracepoint_registered++) { |
7863d51a | 452 | if (!lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle) |
8f0d1c78 | 453 | return; |
0274f7f2 | 454 | lttng_ust_tracepoint__init_urcu_sym(); |
46c881a7 | 455 | return; |
8f0d1c78 | 456 | } |
46c881a7 | 457 | |
7863d51a MJ |
458 | if (!lttng_ust_tracepoint_dlopen_ptr) |
459 | lttng_ust_tracepoint_dlopen_ptr = <tng_ust_tracepoint_dlopen; | |
460 | if (!lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle) | |
461 | lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle = | |
3d3dc207 | 462 | dlopen(LTTNG_UST_TRACEPOINT_LIB_SONAME, RTLD_NOW | RTLD_GLOBAL); |
8041f641 MD |
463 | if (!lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle) { |
464 | lttng_ust_tracepoints_print_disabled_message(); | |
46c881a7 | 465 | return; |
8041f641 | 466 | } |
0274f7f2 | 467 | lttng_ust_tracepoint__init_urcu_sym(); |
46c881a7 MD |
468 | } |
469 | ||
c589eca2 | 470 | static void |
ac9f44c2 | 471 | lttng_ust__tracepoints__destroy(void) |
63661b66 | 472 | lttng_ust_notrace __attribute__((destructor(LTTNG_UST_CONSTRUCTOR_PRIO))); |
46c881a7 | 473 | static void |
ac9f44c2 | 474 | lttng_ust__tracepoints__destroy(void) |
46c881a7 MD |
475 | { |
476 | int ret; | |
477 | ||
0274f7f2 | 478 | if (--lttng_ust_tracepoint_registered) |
46c881a7 | 479 | return; |
7863d51a MJ |
480 | if (!lttng_ust_tracepoint_dlopen_ptr) |
481 | lttng_ust_tracepoint_dlopen_ptr = <tng_ust_tracepoint_dlopen; | |
62eb90f3 MJ |
482 | if (!lttng_ust_tracepoint_destructors_syms_ptr) |
483 | lttng_ust_tracepoint_destructors_syms_ptr = <tng_ust_tracepoint_destructors_syms; | |
7863d51a | 484 | if (!lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle) |
0fd0de10 | 485 | return; |
0274f7f2 | 486 | if (lttng_ust_tracepoint_ptrs_registered) |
0fd0de10 FD |
487 | return; |
488 | /* | |
489 | * Lookup if destructors must be executed using the new method. | |
490 | */ | |
62eb90f3 MJ |
491 | if (lttng_ust_tracepoint_destructors_syms_ptr->tracepoint_get_destructors_state |
492 | && !lttng_ust_tracepoint_destructors_syms_ptr->tracepoint_get_destructors_state()) { | |
0fd0de10 FD |
493 | /* |
494 | * The tracepoint_get_destructors_state symbol was found with | |
495 | * dlsym but its returned value is 0 meaning that destructors | |
496 | * must not be executed. | |
497 | */ | |
498 | return; | |
499 | } | |
7863d51a | 500 | ret = dlclose(lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle); |
0fd0de10 FD |
501 | if (ret) { |
502 | fprintf(stderr, "Error (%d) in dlclose\n", ret); | |
503 | abort(); | |
504 | } | |
7863d51a | 505 | memset(lttng_ust_tracepoint_dlopen_ptr, 0, sizeof(*lttng_ust_tracepoint_dlopen_ptr)); |
46c881a7 MD |
506 | } |
507 | ||
88c7c4ea MJ |
508 | #if LTTNG_UST_COMPAT_API(0) |
509 | # if defined(TRACEPOINT_DEFINE) && !defined(LTTNG_UST_TRACEPOINT_DEFINE) | |
510 | # define LTTNG_UST_TRACEPOINT_DEFINE | |
511 | # endif | |
512 | #endif /* #if LTTNG_UST_COMPAT_API(0) */ | |
513 | ||
faa63343 MD |
514 | #if LTTNG_UST_COMPAT_API(0) |
515 | #define tracepoint lttng_ust_tracepoint | |
516 | #define do_tracepoint lttng_ust_do_tracepoint | |
517 | #define tracepoint_enabled lttng_ust_tracepoint_enabled | |
518 | #define TP_ARGS LTTNG_UST_TP_ARGS | |
519 | #endif /* #if LTTNG_UST_COMPAT_API(0) */ | |
520 | ||
521 | #ifdef __cplusplus | |
522 | } | |
523 | #endif | |
524 | ||
525 | #endif /* _LTTNG_UST_TRACEPOINT_H */ | |
526 | ||
527 | /* The following declarations must be outside re-inclusion protection. */ | |
528 | ||
88c7c4ea | 529 | #ifdef LTTNG_UST_TRACEPOINT_DEFINE |
deb6e540 | 530 | |
faa63343 MD |
531 | #ifndef _LTTNG_UST_TRACEPOINT_DEFINE_ONCE |
532 | #define _LTTNG_UST_TRACEPOINT_DEFINE_ONCE | |
533 | ||
534 | #ifdef __cplusplus | |
535 | extern "C" { | |
536 | #endif | |
537 | ||
558b9d86 MD |
538 | /* |
539 | * These weak symbols, the constructor, and destructor take care of | |
540 | * registering only _one_ instance of the tracepoints per shared-ojbect | |
541 | * (or for the whole main program). | |
542 | */ | |
ac9f44c2 | 543 | extern struct lttng_ust_tracepoint * const __start_lttng_ust_tracepoints_ptrs[] |
558b9d86 | 544 | __attribute__((weak, visibility("hidden"))); |
ac9f44c2 | 545 | extern struct lttng_ust_tracepoint * const __stop_lttng_ust_tracepoints_ptrs[] |
558b9d86 MD |
546 | __attribute__((weak, visibility("hidden"))); |
547 | ||
628e1d81 | 548 | /* |
341a19e8 | 549 | * When LTTNG_UST_TRACEPOINT_PROBE_DYNAMIC_LINKAGE is defined, we do not emit a |
628e1d81 | 550 | * unresolved symbol that requires the provider to be linked in. When |
341a19e8 | 551 | * LTTNG_UST_TRACEPOINT_PROBE_DYNAMIC_LINKAGE is not defined, we emit an |
628e1d81 MD |
552 | * unresolved symbol that depends on having the provider linked in, |
553 | * otherwise the linker complains. This deals with use of static | |
554 | * libraries, ensuring that the linker does not remove the provider | |
555 | * object from the executable. | |
556 | */ | |
341a19e8 MJ |
557 | |
558 | #if LTTNG_UST_COMPAT_API(0) | |
559 | # if defined(TRACEPOINT_PROBE_DYNAMIC_LINKAGE) && !defined(LTTNG_UST_TRACEPOINT_PROBE_DYNAMIC_LINKAGE) | |
560 | # define LTTNG_UST_TRACEPOINT_PROBE_DYNAMIC_LINKAGE | |
561 | # endif | |
562 | #endif /* #if LTTNG_UST_COMPAT_API(0) */ | |
563 | ||
564 | #ifdef LTTNG_UST_TRACEPOINT_PROBE_DYNAMIC_LINKAGE | |
565 | #define LTTNG_UST__TRACEPOINT_UNDEFINED_REF(provider) NULL | |
566 | #else /* LTTNG_UST_TRACEPOINT_PROBE_DYNAMIC_LINKAGE */ | |
567 | #define LTTNG_UST__TRACEPOINT_UNDEFINED_REF(provider) <tng_ust_tracepoint_provider_##provider | |
568 | #endif /* LTTNG_UST_TRACEPOINT_PROBE_DYNAMIC_LINKAGE */ | |
628e1d81 | 569 | |
b728d87e MD |
570 | /* |
571 | * Note: to allow PIC code, we need to allow the linker to update the pointers | |
ac9f44c2 | 572 | * in the lttng_ust_tracepoints_ptrs section. |
b728d87e MD |
573 | * Therefore, this section is _not_ const (read-only). |
574 | */ | |
341a19e8 | 575 | #define LTTNG_UST__TP_EXTRACT_STRING(...) #__VA_ARGS__ |
b4f3bc52 | 576 | |
faa63343 | 577 | #undef LTTNG_UST__DEFINE_TRACEPOINT |
7f2f82c3 | 578 | #define LTTNG_UST__DEFINE_TRACEPOINT(_provider, _name, _args) \ |
81b16412 | 579 | lttng_ust_tracepoint_validate_name_len(_provider, _name); \ |
29d6f421 MD |
580 | extern int lttng_ust_tracepoint_provider_##_provider \ |
581 | LTTNG_UST__TRACEPOINT_PROVIDER_DEFINITION_VISIBILITY; \ | |
92866a9d | 582 | static const char lttng_ust_tp_provider_strtab_##_provider##___##_name[] \ |
ac9f44c2 | 583 | __attribute__((section("lttng_ust_tracepoints_strings"))) = \ |
34f7f142 | 584 | #_provider; \ |
92866a9d | 585 | static const char lttng_ust_tp_name_strtab_##_provider##___##_name[] \ |
ac9f44c2 | 586 | __attribute__((section("lttng_ust_tracepoints_strings"))) = \ |
34f7f142 | 587 | #_name; \ |
0274f7f2 | 588 | struct lttng_ust_tracepoint lttng_ust_tracepoint_##_provider##___##_name \ |
29d6f421 MD |
589 | __attribute__((section("lttng_ust_tracepoints"))) \ |
590 | LTTNG_UST__TRACEPOINT_DEFINITION_VISIBILITY = { \ | |
f641d544 | 591 | sizeof(struct lttng_ust_tracepoint), \ |
92866a9d MJ |
592 | lttng_ust_tp_provider_strtab_##_provider##___##_name, \ |
593 | lttng_ust_tp_name_strtab_##_provider##___##_name, \ | |
b4f3bc52 MD |
594 | 0, \ |
595 | NULL, \ | |
341a19e8 MJ |
596 | LTTNG_UST__TRACEPOINT_UNDEFINED_REF(_provider), \ |
597 | LTTNG_UST__TP_EXTRACT_STRING(_args), \ | |
b4f3bc52 | 598 | }; \ |
1a206094 | 599 | static struct lttng_ust_tracepoint * \ |
0274f7f2 | 600 | lttng_ust_tracepoint_ptr_##_provider##___##_name \ |
ac9f44c2 | 601 | __attribute__((section("lttng_ust_tracepoints_ptrs"), used)) \ |
4f74bc5e | 602 | __lttng_ust_variable_attribute_no_sanitize_address = \ |
0274f7f2 | 603 | <tng_ust_tracepoint_##_provider##___##_name; |
b728d87e | 604 | |
465a0d04 | 605 | static void |
ac9f44c2 | 606 | lttng_ust__tracepoints__ptrs_init(void) |
63661b66 | 607 | lttng_ust_notrace __attribute__((constructor(LTTNG_UST_CONSTRUCTOR_PRIO))); |
a8909ba5 | 608 | static void |
ac9f44c2 | 609 | lttng_ust__tracepoints__ptrs_init(void) |
b728d87e | 610 | { |
0274f7f2 | 611 | if (lttng_ust_tracepoint_ptrs_registered++) |
b728d87e | 612 | return; |
7863d51a MJ |
613 | if (!lttng_ust_tracepoint_dlopen_ptr) |
614 | lttng_ust_tracepoint_dlopen_ptr = <tng_ust_tracepoint_dlopen; | |
615 | if (!lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle) | |
616 | lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle = | |
3d3dc207 | 617 | dlopen(LTTNG_UST_TRACEPOINT_LIB_SONAME, RTLD_NOW | RTLD_GLOBAL); |
8041f641 MD |
618 | if (!lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle) { |
619 | lttng_ust_tracepoints_print_disabled_message(); | |
deb6e540 | 620 | return; |
8041f641 | 621 | } |
62eb90f3 MJ |
622 | if (!lttng_ust_tracepoint_destructors_syms_ptr) |
623 | lttng_ust_tracepoint_destructors_syms_ptr = <tng_ust_tracepoint_destructors_syms; | |
14227bde | 624 | lttng_ust_tracepoint_dlopen_ptr->lttng_ust_tracepoint_module_register = |
1a206094 | 625 | URCU_FORCE_CAST(int (*)(struct lttng_ust_tracepoint * const *, int), |
7863d51a | 626 | dlsym(lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle, |
14227bde MJ |
627 | "lttng_ust_tracepoint_module_register")); |
628 | lttng_ust_tracepoint_dlopen_ptr->lttng_ust_tracepoint_module_unregister = | |
1a206094 | 629 | URCU_FORCE_CAST(int (*)(struct lttng_ust_tracepoint * const *), |
7863d51a | 630 | dlsym(lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle, |
14227bde | 631 | "lttng_ust_tracepoint_module_unregister")); |
62eb90f3 | 632 | lttng_ust_tracepoint_destructors_syms_ptr->tracepoint_disable_destructors = |
0fd0de10 | 633 | URCU_FORCE_CAST(void (*)(void), |
7863d51a | 634 | dlsym(lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle, |
096c06e5 | 635 | "lttng_ust_tp_disable_destructors")); |
62eb90f3 | 636 | lttng_ust_tracepoint_destructors_syms_ptr->tracepoint_get_destructors_state = |
0fd0de10 | 637 | URCU_FORCE_CAST(int (*)(void), |
7863d51a | 638 | dlsym(lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle, |
096c06e5 | 639 | "lttng_ust_tp_get_destructors_state")); |
0274f7f2 | 640 | lttng_ust_tracepoint__init_urcu_sym(); |
14227bde MJ |
641 | if (lttng_ust_tracepoint_dlopen_ptr->lttng_ust_tracepoint_module_register) { |
642 | lttng_ust_tracepoint_dlopen_ptr->lttng_ust_tracepoint_module_register(__start_lttng_ust_tracepoints_ptrs, | |
ac9f44c2 MJ |
643 | __stop_lttng_ust_tracepoints_ptrs - |
644 | __start_lttng_ust_tracepoints_ptrs); | |
99234da6 | 645 | } |
b728d87e MD |
646 | } |
647 | ||
c589eca2 | 648 | static void |
ac9f44c2 | 649 | lttng_ust__tracepoints__ptrs_destroy(void) |
63661b66 | 650 | lttng_ust_notrace __attribute__((destructor(LTTNG_UST_CONSTRUCTOR_PRIO))); |
a8909ba5 | 651 | static void |
ac9f44c2 | 652 | lttng_ust__tracepoints__ptrs_destroy(void) |
b728d87e | 653 | { |
deb6e540 | 654 | int ret; |
51920067 | 655 | |
0274f7f2 | 656 | if (--lttng_ust_tracepoint_ptrs_registered) |
b728d87e | 657 | return; |
7863d51a MJ |
658 | if (!lttng_ust_tracepoint_dlopen_ptr) |
659 | lttng_ust_tracepoint_dlopen_ptr = <tng_ust_tracepoint_dlopen; | |
62eb90f3 MJ |
660 | if (!lttng_ust_tracepoint_destructors_syms_ptr) |
661 | lttng_ust_tracepoint_destructors_syms_ptr = <tng_ust_tracepoint_destructors_syms; | |
14227bde MJ |
662 | if (lttng_ust_tracepoint_dlopen_ptr->lttng_ust_tracepoint_module_unregister) |
663 | lttng_ust_tracepoint_dlopen_ptr->lttng_ust_tracepoint_module_unregister(__start_lttng_ust_tracepoints_ptrs); | |
7863d51a | 664 | if (lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle |
62eb90f3 MJ |
665 | && lttng_ust_tracepoint_destructors_syms_ptr->tracepoint_get_destructors_state |
666 | && lttng_ust_tracepoint_destructors_syms_ptr->tracepoint_get_destructors_state() | |
0274f7f2 | 667 | && !lttng_ust_tracepoint_ptrs_registered) { |
7863d51a | 668 | ret = dlclose(lttng_ust_tracepoint_dlopen_ptr->liblttngust_handle); |
76aca78d MD |
669 | if (ret) { |
670 | fprintf(stderr, "Error (%d) in dlclose\n", ret); | |
671 | abort(); | |
672 | } | |
7863d51a | 673 | memset(lttng_ust_tracepoint_dlopen_ptr, 0, sizeof(*lttng_ust_tracepoint_dlopen_ptr)); |
deb6e540 | 674 | } |
b728d87e MD |
675 | } |
676 | ||
677 | #ifdef __cplusplus | |
678 | } | |
679 | #endif | |
680 | ||
faa63343 | 681 | #endif /* _LTTNG_UST_TRACEPOINT_DEFINE_ONCE */ |
b728d87e | 682 | |
faa63343 MD |
683 | #else /* LTTNG_UST_TRACEPOINT_DEFINE */ |
684 | ||
685 | #undef LTTNG_UST__DEFINE_TRACEPOINT | |
686 | #define LTTNG_UST__DEFINE_TRACEPOINT(_provider, _name, _args) | |
687 | ||
688 | #endif /* #else LTTNG_UST_TRACEPOINT_DEFINE */ | |
b728d87e | 689 | |
29d6f421 MD |
690 | /* |
691 | * LTTNG_UST_TRACEPOINT_HIDDEN_DEFINITION: Define this before including | |
692 | * a tracepoint instrumentation header to hide symbols associated with | |
693 | * tracepoint module instrumentation. This is useful if all compile | |
694 | * units using the lttng_ust_tracepoint(), | |
695 | * lttng_ust_tracepoint_enabled() and lttng_ust_do_tracepoint() macros | |
696 | * is within the same module as the compile unit including the | |
697 | * tracepoint header after defining LTTNG_UST_TRACEPOINT_DEFINE. | |
698 | */ | |
699 | ||
700 | #undef LTTNG_UST__TRACEPOINT_DEFINITION_VISIBILITY | |
701 | #ifdef LTTNG_UST_TRACEPOINT_HIDDEN_DEFINITION | |
702 | #define LTTNG_UST__TRACEPOINT_DEFINITION_VISIBILITY __attribute__((visibility("hidden"))) | |
703 | #else | |
704 | #define LTTNG_UST__TRACEPOINT_DEFINITION_VISIBILITY __attribute__((visibility("default"))) | |
705 | #endif | |
706 | ||
707 | /* | |
708 | * LTTNG_UST_TRACEPOINT_PROVIDER_HIDDEN_DEFINITION: Define this before | |
709 | * including a tracepoint instrumentation header to hide symbols | |
710 | * associated with the tracepoint provider. This is useful if the | |
711 | * tracepoint definition (including the header after defining | |
712 | * LTTNG_UST_TRACEPOINT_DEFINE) is in the same module as the provider | |
713 | * (including the header after defining | |
714 | * LTTNG_UST_TRACEPOINT_CREATE_PROBES). | |
715 | */ | |
716 | #undef LTTNG_UST__TRACEPOINT_PROVIDER_DEFINITION_VISIBILITY | |
717 | #ifdef LTTNG_UST_TRACEPOINT_PROVIDER_HIDDEN_DEFINITION | |
718 | #define LTTNG_UST__TRACEPOINT_PROVIDER_DEFINITION_VISIBILITY __attribute__((visibility("hidden"))) | |
719 | #else | |
720 | #define LTTNG_UST__TRACEPOINT_PROVIDER_DEFINITION_VISIBILITY __attribute__((visibility("default"))) | |
721 | #endif | |
722 | ||
2ebf164b | 723 | #ifndef LTTNG_UST_TRACEPOINT_ENUM |
c785c634 MD |
724 | |
725 | /* | |
726 | * Tracepoint Enumerations | |
727 | * | |
728 | * The enumeration is a mapping between an integer, or range of integers, and | |
729 | * a string. It can be used to have a more compact trace in cases where the | |
730 | * possible values for a field are limited: | |
731 | * | |
732 | * An example: | |
733 | * | |
2ebf164b | 734 | * LTTNG_UST_TRACEPOINT_ENUM(someproject_component, enumname, |
4849bc7a | 735 | * LTTNG_UST_TP_ENUM_VALUES( |
78684808 MJ |
736 | * lttng_ust_field_enum_value("even", 0) |
737 | * lttng_ust_field_enum_value("uneven", 1) | |
738 | * lttng_ust_field_enum_range("twoto4", 2, 4) | |
739 | * lttng_ust_field_enum_value("five", 5) | |
c785c634 MD |
740 | * ) |
741 | * ) | |
742 | * | |
743 | * Where "someproject_component" is the name of the component this enumeration | |
744 | * belongs to and "enumname" identifies this enumeration. Inside the | |
4849bc7a | 745 | * LTTNG_UST_TP_ENUM_VALUES macro is the actual mapping. Each string value can map |
78684808 MJ |
746 | * to either a single value with lttng_ust_field_enum_value or a range of values |
747 | * with lttng_ust_field_enum_range. | |
c785c634 MD |
748 | * |
749 | * Enumeration ranges may overlap, but the behavior is implementation-defined, | |
750 | * each trace reader will handle overlapping as it wishes. | |
751 | * | |
752 | * That enumeration can then be used in a field inside the TP_FIELD macro using | |
753 | * the following line: | |
754 | * | |
78684808 | 755 | * lttng_ust_field_enum(someproject_component, enumname, enumtype, enumfield, enumval) |
c785c634 MD |
756 | * |
757 | * Where "someproject_component" and "enumname" match those in the | |
2ebf164b | 758 | * LTTNG_UST_TRACEPOINT_ENUM, "enumtype" is a signed or unsigned integer type |
c785c634 MD |
759 | * backing the enumeration, "enumfield" is the name of the field and |
760 | * "enumval" is the value. | |
761 | */ | |
762 | ||
2ebf164b | 763 | #define LTTNG_UST_TRACEPOINT_ENUM(provider, name, values) |
c785c634 | 764 | |
2ebf164b MJ |
765 | #if LTTNG_UST_COMPAT_API(0) |
766 | #define TRACEPOINT_ENUM LTTNG_UST_TRACEPOINT_ENUM | |
767 | #endif /* #if LTTNG_UST_COMPAT_API(0) */ | |
768 | ||
769 | #endif /* #ifndef LTTNG_UST_TRACEPOINT_ENUM */ | |
c785c634 | 770 | |
7f2f82c3 | 771 | #ifndef LTTNG_UST_TRACEPOINT_EVENT |
b728d87e MD |
772 | |
773 | /* | |
7f2f82c3 | 774 | * How to use the LTTNG_UST_TRACEPOINT_EVENT macro: |
b728d87e MD |
775 | * |
776 | * An example: | |
a60af3a5 | 777 | * |
7f2f82c3 | 778 | * LTTNG_UST_TRACEPOINT_EVENT(someproject_component, event_name, |
b728d87e | 779 | * |
cadfcbfc | 780 | * * LTTNG_UST_TP_ARGS takes from 0 to 10 "type, field_name" pairs * |
b728d87e | 781 | * |
cadfcbfc | 782 | * LTTNG_UST_TP_ARGS(int, arg0, void *, arg1, char *, string, size_t, strlen, |
b728d87e MD |
783 | * long *, arg4, size_t, arg4_len), |
784 | * | |
efa14d16 | 785 | * * LTTNG_UST_TP_FIELDS describes the event payload layout in the trace * |
b728d87e | 786 | * |
efa14d16 | 787 | * LTTNG_UST_TP_FIELDS( |
a60af3a5 | 788 | * * Integer, printed in base 10 * |
b4064f28 | 789 | * lttng_ust_field_integer(int, field_a, arg0) |
b728d87e | 790 | * |
a60af3a5 | 791 | * * Integer, printed with 0x base 16 * |
b4064f28 | 792 | * lttng_ust_field_integer_hex(unsigned long, field_d, arg1) |
b728d87e | 793 | * |
c785c634 | 794 | * * Enumeration * |
78684808 | 795 | * lttng_ust_field_enum(someproject_component, enum_name, int, field_e, arg0) |
c785c634 | 796 | * |
a60af3a5 | 797 | * * Array Sequence, printed as UTF8-encoded array of bytes * |
10937ee5 | 798 | * lttng_ust_field_array_text(char, field_b, string, FIXED_LEN) |
1d188af9 | 799 | * lttng_ust_field_sequence_text(char, field_c, string, size_t, strlen) |
b728d87e | 800 | * |
a60af3a5 | 801 | * * String, printed as UTF8-encoded string * |
3202f63a | 802 | * lttng_ust_field_string(field_e, string) |
b728d87e | 803 | * |
a60af3a5 | 804 | * * Array sequence of signed integer values * |
10937ee5 | 805 | * lttng_ust_field_array(long, field_f, arg4, FIXED_LEN4) |
1d188af9 | 806 | * lttng_ust_field_sequence(long, field_g, arg4, size_t, arg4_len) |
b728d87e MD |
807 | * ) |
808 | * ) | |
809 | * | |
810 | * More detailed explanation: | |
811 | * | |
812 | * The name of the tracepoint is expressed as a tuple with the provider | |
813 | * and name arguments. | |
814 | * | |
815 | * The provider and name should be a proper C99 identifier. | |
816 | * The "provider" and "name" MUST follow these rules to ensure no | |
817 | * namespace clash occurs: | |
818 | * | |
819 | * For projects (applications and libraries) for which an entity | |
820 | * specific to the project controls the source code and thus its | |
821 | * tracepoints (typically with a scope larger than a single company): | |
822 | * | |
823 | * either: | |
824 | * project_component, event | |
825 | * or: | |
826 | * project, event | |
827 | * | |
828 | * Where "project" is the name of the project, | |
829 | * "component" is the name of the project component (which may | |
830 | * include several levels of sub-components, e.g. | |
831 | * ...component_subcomponent_...) where the tracepoint is located | |
832 | * (optional), | |
833 | * "event" is the name of the tracepoint event. | |
834 | * | |
835 | * For projects issued from a single company wishing to advertise that | |
836 | * the company controls the source code and thus the tracepoints, the | |
837 | * "com_" prefix should be used: | |
838 | * | |
839 | * either: | |
840 | * com_company_project_component, event | |
841 | * or: | |
842 | * com_company_project, event | |
843 | * | |
844 | * Where "company" is the name of the company, | |
845 | * "project" is the name of the project, | |
846 | * "component" is the name of the project component (which may | |
847 | * include several levels of sub-components, e.g. | |
848 | * ...component_subcomponent_...) where the tracepoint is located | |
849 | * (optional), | |
850 | * "event" is the name of the tracepoint event. | |
851 | * | |
852 | * the provider:event identifier is limited to 127 characters. | |
853 | */ | |
854 | ||
7f2f82c3 | 855 | #define LTTNG_UST_TRACEPOINT_EVENT(provider, name, args, fields) \ |
6eddcb06 MJ |
856 | LTTNG_UST__DECLARE_TRACEPOINT(provider, name, LTTNG_UST__TP_PARAMS(args)) \ |
857 | LTTNG_UST__DEFINE_TRACEPOINT(provider, name, LTTNG_UST__TP_PARAMS(args)) | |
b728d87e | 858 | |
7f2f82c3 | 859 | #define LTTNG_UST_TRACEPOINT_EVENT_CLASS(provider, name, args, fields) |
b728d87e | 860 | |
5b675300 | 861 | #define LTTNG_UST_TRACEPOINT_EVENT_INSTANCE(template_provider, template_name, provider, name, args) \ |
6eddcb06 MJ |
862 | LTTNG_UST__DECLARE_TRACEPOINT(provider, name, LTTNG_UST__TP_PARAMS(args)) \ |
863 | LTTNG_UST__DEFINE_TRACEPOINT(provider, name, LTTNG_UST__TP_PARAMS(args)) | |
b728d87e | 864 | |
7f2f82c3 MJ |
865 | #if LTTNG_UST_COMPAT_API(0) |
866 | #define TRACEPOINT_EVENT LTTNG_UST_TRACEPOINT_EVENT | |
867 | #define TRACEPOINT_EVENT_CLASS LTTNG_UST_TRACEPOINT_EVENT_CLASS | |
5b675300 MD |
868 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, args) \ |
869 | LTTNG_UST_TRACEPOINT_EVENT_INSTANCE(_provider, _template, \ | |
870 | _provider, _name, LTTNG_UST__TP_PARAMS(args)) | |
871 | ||
7f2f82c3 MJ |
872 | #endif /* #if LTTNG_UST_COMPAT_API(0) */ |
873 | ||
874 | #endif /* #ifndef LTTNG_UST_TRACEPOINT_EVENT */ | |
b728d87e | 875 | |
612e9ce4 | 876 | #ifndef LTTNG_UST_TRACEPOINT_LOGLEVEL |
b728d87e MD |
877 | |
878 | /* | |
75c5ad79 | 879 | * Tracepoint Loglevels |
b728d87e MD |
880 | * |
881 | * Typical use of these loglevels: | |
882 | * | |
d8de1354 | 883 | * The loglevels go from 0 to 14. Higher numbers imply the most |
75c5ad79 MD |
884 | * verbosity (higher event throughput expected. |
885 | * | |
d8de1354 MD |
886 | * Loglevels 0 through 6, and loglevel 14, match syslog(3) loglevels |
887 | * semantic. Loglevels 7 through 13 offer more fine-grained selection of | |
888 | * debug information. | |
75c5ad79 | 889 | * |
612e9ce4 | 890 | * LTTNG_UST_TRACEPOINT_LOGLEVEL_EMERG 0 |
75c5ad79 MD |
891 | * system is unusable |
892 | * | |
612e9ce4 | 893 | * LTTNG_UST_TRACEPOINT_LOGLEVEL_ALERT 1 |
75c5ad79 MD |
894 | * action must be taken immediately |
895 | * | |
612e9ce4 | 896 | * LTTNG_UST_TRACEPOINT_LOGLEVEL_CRIT 2 |
75c5ad79 MD |
897 | * critical conditions |
898 | * | |
612e9ce4 | 899 | * LTTNG_UST_TRACEPOINT_LOGLEVEL_ERR 3 |
75c5ad79 MD |
900 | * error conditions |
901 | * | |
612e9ce4 | 902 | * LTTNG_UST_TRACEPOINT_LOGLEVEL_WARNING 4 |
75c5ad79 MD |
903 | * warning conditions |
904 | * | |
612e9ce4 | 905 | * LTTNG_UST_TRACEPOINT_LOGLEVEL_NOTICE 5 |
75c5ad79 MD |
906 | * normal, but significant, condition |
907 | * | |
612e9ce4 | 908 | * LTTNG_UST_TRACEPOINT_LOGLEVEL_INFO 6 |
75c5ad79 MD |
909 | * informational message |
910 | * | |
612e9ce4 | 911 | * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_SYSTEM 7 |
d8de1354 | 912 | * debug information with system-level scope (set of programs) |
75c5ad79 | 913 | * |
612e9ce4 | 914 | * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_PROGRAM 8 |
d8de1354 | 915 | * debug information with program-level scope (set of processes) |
75c5ad79 | 916 | * |
612e9ce4 | 917 | * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_PROCESS 9 |
d8de1354 | 918 | * debug information with process-level scope (set of modules) |
75c5ad79 | 919 | * |
612e9ce4 | 920 | * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_MODULE 10 |
d8de1354 | 921 | * debug information with module (executable/library) scope (set of units) |
75c5ad79 | 922 | * |
612e9ce4 | 923 | * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_UNIT 11 |
d8de1354 | 924 | * debug information with compilation unit scope (set of functions) |
75c5ad79 | 925 | * |
612e9ce4 | 926 | * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_FUNCTION 12 |
d8de1354 | 927 | * debug information with function-level scope |
75c5ad79 | 928 | * |
612e9ce4 | 929 | * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_LINE 13 |
7f2f82c3 | 930 | * debug information with line-level scope (LTTNG_UST_TRACEPOINT_EVENT default) |
902e1379 | 931 | * |
612e9ce4 | 932 | * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG 14 |
1e3b0059 | 933 | * debug-level message |
75c5ad79 | 934 | * |
7f2f82c3 | 935 | * Declare tracepoint loglevels for tracepoints. A LTTNG_UST_TRACEPOINT_EVENT |
612e9ce4 | 936 | * should be declared prior to the the LTTNG_UST_TRACEPOINT_LOGLEVEL for a given |
853cda88 MD |
937 | * tracepoint name. The first field is the provider name, the second |
938 | * field is the name of the tracepoint, the third field is the loglevel | |
939 | * name. | |
b728d87e | 940 | * |
612e9ce4 | 941 | * LTTNG_UST_TRACEPOINT_LOGLEVEL(< [com_company_]project[_component] >, < event >, |
b728d87e MD |
942 | * < loglevel_name >) |
943 | * | |
5b393d64 | 944 | * The LTTNG_UST_TRACEPOINT_PROVIDER must be already declared before declaring a |
612e9ce4 | 945 | * LTTNG_UST_TRACEPOINT_LOGLEVEL. |
b728d87e MD |
946 | */ |
947 | ||
882a56d7 | 948 | enum { |
612e9ce4 MJ |
949 | LTTNG_UST_TRACEPOINT_LOGLEVEL_EMERG = 0, |
950 | LTTNG_UST_TRACEPOINT_LOGLEVEL_ALERT = 1, | |
951 | LTTNG_UST_TRACEPOINT_LOGLEVEL_CRIT = 2, | |
952 | LTTNG_UST_TRACEPOINT_LOGLEVEL_ERR = 3, | |
953 | LTTNG_UST_TRACEPOINT_LOGLEVEL_WARNING = 4, | |
954 | LTTNG_UST_TRACEPOINT_LOGLEVEL_NOTICE = 5, | |
955 | LTTNG_UST_TRACEPOINT_LOGLEVEL_INFO = 6, | |
956 | LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_SYSTEM = 7, | |
957 | LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_PROGRAM = 8, | |
958 | LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_PROCESS = 9, | |
959 | LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_MODULE = 10, | |
960 | LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_UNIT = 11, | |
961 | LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_FUNCTION = 12, | |
962 | LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_LINE = 13, | |
963 | LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG = 14, | |
882a56d7 MD |
964 | }; |
965 | ||
612e9ce4 | 966 | #define LTTNG_UST_TRACEPOINT_LOGLEVEL(provider, name, loglevel) |
b728d87e | 967 | |
612e9ce4 MJ |
968 | #if LTTNG_UST_COMPAT_API(0) |
969 | #define TRACEPOINT_LOGLEVEL LTTNG_UST_TRACEPOINT_LOGLEVEL | |
970 | ||
971 | #define TRACE_EMERG LTTNG_UST_TRACEPOINT_LOGLEVEL_EMERG | |
972 | #define TRACE_ALERT LTTNG_UST_TRACEPOINT_LOGLEVEL_ALERT | |
973 | #define TRACE_CRIT LTTNG_UST_TRACEPOINT_LOGLEVEL_CRIT | |
974 | #define TRACE_ERR LTTNG_UST_TRACEPOINT_LOGLEVEL_ERR | |
975 | #define TRACE_WARNING LTTNG_UST_TRACEPOINT_LOGLEVEL_WARNING | |
976 | #define TRACE_NOTICE LTTNG_UST_TRACEPOINT_LOGLEVEL_NOTICE | |
977 | #define TRACE_INFO LTTNG_UST_TRACEPOINT_LOGLEVEL_INFO | |
978 | #define TRACE_DEBUG_SYSTEM LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_SYSTEM | |
979 | #define TRACE_DEBUG_PROGRAM LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_PROGRAM | |
980 | #define TRACE_DEBUG_PROCESS LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_PROCESS | |
981 | #define TRACE_DEBUG_MODULE LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_MODULE | |
982 | #define TRACE_DEBUG_UNIT LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_UNIT | |
983 | #define TRACE_DEBUG_FUNCTION LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_FUNCTION | |
984 | #define TRACE_DEBUG_LINE LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_LINE | |
985 | #define TRACE_DEBUG LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG | |
986 | #endif | |
987 | ||
988 | #endif /* #ifndef LTTNG_UST_TRACEPOINT_LOGLEVEL */ | |
6ddc916d | 989 | |
dbcc2f92 | 990 | #ifndef LTTNG_UST_TRACEPOINT_MODEL_EMF_URI |
6ddc916d | 991 | |
dbcc2f92 | 992 | #define LTTNG_UST_TRACEPOINT_MODEL_EMF_URI(provider, name, uri) |
6ddc916d | 993 | |
dbcc2f92 MJ |
994 | #if LTTNG_UST_COMPAT_API(0) |
995 | #define TRACEPOINT_MODEL_EMF_URI LTTNG_UST_TRACEPOINT_MODEL_EMF_URI | |
996 | #endif | |
997 | ||
998 | #endif /* #ifndef LTTNG_UST_TRACEPOINT_MODEL_EMF_URI */ |