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d183b2df PP |
1 | #ifndef _BARECTF_TRACEPOINT_H |
2 | #define _BARECTF_TRACEPOINT_H | |
3 | ||
4 | /* | |
5 | * The MIT License (MIT) | |
6 | * | |
7 | * Copyright (c) 2016 Philippe Proulx <pproulx@efficios.com> | |
8 | * | |
9 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
10 | * of this software and associated documentation files (the "Software"), to deal | |
11 | * in the Software without restriction, including without limitation the rights | |
12 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
13 | * copies of the Software, and to permit persons to whom the Software is | |
14 | * furnished to do so, subject to the following conditions: | |
15 | * | |
16 | * The above copyright notice and this permission notice shall be included in | |
17 | * all copies or substantial portions of the Software. | |
18 | * | |
19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
20 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
22 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
23 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
24 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
25 | * THE SOFTWARE. | |
26 | */ | |
27 | ||
28 | /* get prefix */ | |
29 | #ifdef BARECTF_TRACEPOINT_PREFIX | |
30 | # define _BARECTF_TRACEPOINT_PREFIX BARECTF_TRACEPOINT_PREFIX | |
31 | #else | |
32 | # ifdef _BARECTF_PREFIX | |
33 | # define _BARECTF_TRACEPOINT_PREFIX _BARECTF_PREFIX | |
34 | # else | |
35 | # error You need to define BARECTF_TRACEPOINT_PREFIX in order to use this header. | |
36 | # endif | |
37 | #endif | |
38 | ||
39 | /* get stream name to use */ | |
40 | #ifdef BARECTF_TRACEPOINT_STREAM | |
41 | # define _BARECTF_TRACEPOINT_STREAM BARECTF_TRACEPOINT_STREAM | |
42 | #else | |
43 | # ifdef _BARECTF_DEFAULT_STREAM | |
44 | # define _BARECTF_TRACEPOINT_STREAM _BARECTF_DEFAULT_STREAM | |
45 | # else | |
46 | # error You need to define BARECTF_TRACEPOINT_STREAM in order to use this header. | |
47 | # endif | |
48 | #endif | |
49 | ||
50 | /* get context to use */ | |
51 | #ifndef BARECTF_TRACEPOINT_CTX | |
52 | # error You need to define BARECTF_TRACEPOINT_CTX in order to use this header. | |
53 | #endif | |
54 | ||
55 | /* | |
56 | * Combines 6 token. Inspired by __TP_COMBINE_TOKENS4() in | |
57 | * <lttng/tracepoint.h>. See sections 6.10.3 and 6.10.3.1 of | |
58 | * ISO/IEC 9899:1999. | |
59 | */ | |
60 | #define __COMBINE_TOKENS6(_a, _b, _c, _d, _e, _f) \ | |
61 | _a ## _b ## _c ## _d ## _e ## _f | |
62 | #define _COMBINE_TOKENS6(_a, _b, _c, _d, _e, _f) \ | |
63 | __COMBINE_TOKENS6(_a, _b, _c, _d, _e, _f) | |
64 | ||
65 | /* tracepoint() used by the user */ | |
66 | #undef tracepoint | |
67 | #define tracepoint(_prov_name, _tp_name, ...) \ | |
68 | _COMBINE_TOKENS6(_BARECTF_TRACEPOINT_PREFIX, _BARECTF_TRACEPOINT_STREAM, _trace_, _prov_name, _, _tp_name)(BARECTF_TRACEPOINT_CTX, ##__VA_ARGS__) | |
69 | ||
70 | #endif /* _BARECTF_TRACEPOINT_H */ |