4 * LTTng Userspace Tracer (UST) - benchmark tool
6 * Copyright 2010 - Douglas Santos <douglas.santos@polymtl.ca>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
32 #define TRACEPOINT_DEFINE
33 #include "ust_tests_benchmark.h"
37 static unsigned long nr_events
;
46 file
= fopen("/dev/null", "a");
47 fprintf(file
, "%d", v
);
52 tracepoint(ust_tests_benchmark
, tpbench
, v
);
58 void *function(void *arg
)
62 for(i
= 0; i
< nr_events
; i
++) {
68 void usage(char **argv
) {
69 printf("Usage: %s nr_cpus nr_events\n", argv
[0]);
73 int main(int argc
, char **argv
)
83 nr_cpus
= atoi(argv
[1]);
84 printf("using %d processor(s)\n", nr_cpus
);
86 nr_events
= atol(argv
[2]);
87 printf("using %ld events per cpu\n", nr_events
);
89 pthread_t thread
[nr_cpus
];
90 for (i
= 0; i
< nr_cpus
; i
++) {
91 if (pthread_create(&thread
[i
], NULL
, function
, NULL
)) {
92 fprintf(stderr
, "thread create %d failed\n", i
);
97 for (i
= 0; i
< nr_cpus
; i
++) {
98 if (pthread_join(thread
[i
], &retval
)) {
99 fprintf(stderr
, "thread join %d failed\n", i
);
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