50069510fbf1498793f280faa037d392ae287dd6
4 * Userspace RCU library - test program
6 * Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@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.
28 #include <sys/types.h>
33 #include <sys/syscall.h>
38 #if defined(_syscall0)
39 _syscall0(pid_t
, gettid
)
40 #elif defined(__NR_gettid)
41 static inline pid_t
gettid(void)
43 return syscall(__NR_gettid
);
46 #warning "use pid as tid"
47 static inline pid_t
gettid(void)
53 #ifndef DYNAMIC_LINK_TEST
56 #define debug_yield_read()
60 static inline void loop_sleep(unsigned long l
)
69 int main(int argc
, char **argv
)
72 cycles_t time1
, time2
;
73 cycles_t time_tot
= 0;
76 for (i
= 0; i
< TESTS
; i
++) {
80 time_tot
+= time2
- time1
;
82 cpl
= ((double)time_tot
) / (double)TESTS
/ (double)LOOPS
;
84 printf("CALIBRATION : %g cycles per loop\n", cpl
);
85 printf("time_tot = %llu, LOOPS = %d, TESTS = %d\n",
86 time_tot
, LOOPS
, TESTS
);
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