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851803ea JD |
1 | /* |
2 | * Copyright (C) 2010 David Goulet <david.goulet@polymtl.ca> | |
3 | * Copyright (C) 2010 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
4 | * | |
5 | * This library is free software; you can redistribute it and/or | |
6 | * modify it under the terms of the GNU Lesser General Public | |
7 | * License as published by the Free Software Foundation; either | |
8 | * version 2.1 of the License, or (at your option) any later version. | |
9 | * | |
10 | * This library is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * Lesser General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU Lesser General Public | |
16 | * License along with this library; if not, write to the Free Software | |
17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
18 | */ | |
19 | ||
20 | /* | |
21 | * This test is aimed at testing tracepoint *with* trace_mark : | |
22 | * | |
23 | * 1) tracepoint named : "ust_event" | |
24 | * -) Probe 1 registered and recording the value 42 | |
25 | */ | |
26 | ||
27 | #include <stdio.h> | |
28 | #include "tracepoint_benchmark.h" | |
29 | #include <ust/type-serializer.h> | |
30 | #include "trace.h" | |
31 | ||
32 | #define NR_EVENTS 10000000 | |
33 | ||
34 | DEFINE_TRACE(ust_event); | |
35 | ||
36 | void tp_probe(void *data, unsigned int p1); | |
37 | ||
38 | DEFINE_MARKER_TP(ust, event, ust_event, tp_probe, "p1 %u"); | |
39 | ||
40 | /* | |
41 | * Probe 1 --> ust_event | |
42 | */ | |
43 | void tp_probe(void *data, unsigned int p1) | |
44 | { | |
45 | struct marker *marker; | |
46 | ||
47 | marker = &GET_MARKER(ust, event); | |
48 | ltt_specialized_trace(marker, data, &p1, sizeof(p1), sizeof(p1)); | |
49 | } | |
50 | ||
51 | static void __attribute__((constructor)) init() | |
52 | { | |
53 | register_trace_ust_event(tp_probe, NULL); | |
54 | } | |
55 | ||
56 | void single_trace(unsigned int v) | |
57 | { | |
58 | TRACE(TRACEPOINT_BENCHMARK_SINGLE_TRACE(v)); | |
59 | trace_ust_event(v); | |
60 | } | |
61 | ||
62 | void do_trace(void) | |
63 | { | |
64 | long i; | |
65 | ||
66 | for (i = 0; i < NR_EVENTS; i++) | |
67 | single_trace(42); | |
68 | } | |
69 | ||
70 | void *thr1(void *arg) | |
71 | { | |
72 | do_trace(); | |
73 | return ((void*)1); | |
74 | } | |
75 | ||
76 | int main(int argc, char **argv) | |
77 | { | |
78 | int err, i; | |
79 | void *tret; | |
80 | pthread_t *tid; | |
81 | int nr_threads; | |
82 | ||
83 | if (argc > 1) | |
84 | nr_threads = atoi(argv[1]); | |
85 | else | |
86 | nr_threads = 1; | |
87 | printf("Starting test for %d threads\n", nr_threads); | |
88 | ||
89 | tid = malloc(sizeof(*tid) * nr_threads); | |
90 | ||
91 | for (i = 0; i < nr_threads; i++) { | |
92 | err = pthread_create(&tid[i], NULL, thr1, NULL); | |
93 | if (err != 0) | |
94 | exit(1); | |
95 | } | |
96 | ||
97 | for (i = 0; i < nr_threads; i++) { | |
98 | err = pthread_join(tid[i], &tret); | |
99 | if (err != 0) | |
100 | exit(1); | |
101 | } | |
102 | free(tid); | |
103 | return 0; | |
104 | } |